LCCS: The LCD / CRT Hybrid from JVC
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- เผยแพร่เมื่อ 14 พ.ค. 2024
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So. Ya want color, eh? But you don’t want any of them dots or stripes? We can do that.
Some links!
Here are the earlier videos I referenced:
This one explains how analog television works:
• How Analog Color TV Wo...
And this one is all about Compatible Color:
• Compatible Color: The ...
For those of you who enjoy links, have some more!
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Quick note! When I went to take more footage for some B-roll, I noticed that my camera saw the TV's image as _much_ more color-saturated than my eyes do. With the color cranked up like it is, in person the image looks pretty normal, in fact I'd still say a tad washed out. But for whatever reason, the RGB coloration seems to match the camera's sensor so well that it sees really strong color.
whats the model number of the monitor please, I so want one, I've a few JVC broadcast monitors, sone of mine are ex-BBC, love the little things, but i want one this small, PS great video as always
Persnickety Blvd
5 Cent Refund you’re a saint!!!! Thankyou!!!!
This was awesome! I so would have bought a TV(or PC monitor) made like this! What could have been... Thanks for showing this!
The Broadcast Store has three of these for sale for around $590. I found an old Ebay listing where someone got one of these from a school and sold it for $79... apparently, he didn't know what he had. I'm sure the buyer was over the moon as (according to a few of the forums I've glossed over) these seem to consistently sell for around $500 even today.
I never thought I would ever see Kingdom Hearts, Katamari Damacy, Back to the Future, Chitty Chitty Bang Bang, and Princess Bride in one episode of anything by anyone.
Ikr? Perfection right there
Add the ps2 home screen and a TMNT theme to that list as well
when I saw ps2 home screen I knew this guy was alright
Naaaa nananara nana na na na, Katamari Damashi!
Word, he really touched my Katamari.
God this channel seriously makes life so much better
It's one of the 3 channels out of the 50+ subscriptions that I actually have notifications turned on for.
Its a chill place to learn things about things.
@@99SuperKiller99 Same...
@@99SuperKiller99 I have notifications turned on for all 50+ channels
The only thing i don't like is the name of the channel itself, it's too "boring" IMO to convey how interesting the content is..
That's just genius isn't it. Just showing Red, Green and Blue filters fast enough that our minds don't even notice.
check out SlowMo Guys' video about how CRTs work, it's fascinating how easily our eyes are fooled.
This is an old principle, which was also used in mechanical television. The big advantage is that it is possible to transmit an ordinary black and white image and change the color filter in front of the screen only by means of synchronization pulses. This is a big saving, because that color would basically form in front of the TV screen of the device itself, thus it would not be part of a complex signal.
@@DL-kc8fc I just imagine that my moden big screen television had a huge mechnical wheel in front...
"Breaking news: due to the recent safety education, yesterday reached an all-time low of only 35 people getting sliced into half by their television".
Actually, it would probably be more like the Vectrex, with a color wheel in front of the eyes: th-cam.com/video/IzFTJZM7fXM/w-d-xo.html
@@klausstock8020 Probably not understood. I present, a mechanical television, that is, a television with a Nipkow wheel, which was already working in color. If the color wheel was not on a common shaft, it was necessary to synchronize it with pulses. These impulses directly in the signal were basically color information and that was the saving. Your video was an application on a CRT TV, which is not a good solution, so they tried to hide it in glasses, which is not good at all. I managed to make a black-and-white color TV by hanging a frame with artificial glass on it and shining it with colored light (I don't have time for frequency specifications, synchronization, etc.). The condition was that the image was not allowed to be interlaced, so I had to change the standard, etc. The image was perfectly in color on a black and white screen. Color filters for the film were made on a computer.
I know, it's freaking amazing
_♪Liquid Crystal Color Shutter!♪_
_♪Liquid Crystal Color Shutter!♪_
_♪Liquid Crystal Color Shutter!♪_
_♪Picture on a small screen! Color power!♪_
To amplify the TMNT logo joke in the video.
@@mypkamax yeah, we got that lol
Nicely done! I hear it in the voices of the original TMNT theme song
He [Technolgy Connections] actually beat you to it:
If you turn on captions at the end of the video he does the exact same thing:
“Liquid Crystal Color Shutter!
Liquid Crystal Color Shutter!
Liquid Crystal Color Shutter
Color with a weird trick! Shutter power!”
I chuckled, good job, you need a "neat" award
Praise be to Mr. Munroe. No nerd channel like this is complete without an xkcd reference somewhere.
For the curious, my assumption is that Alec was getting at this:
xkcd.com/1412/
You had me at "unathorized dissassembly"
W A R R A N T Y _ V O I D E D
I do it all the time.
Meanwhile, I was had at LCCS.
LIQUID, CRYSTAL, COLOR SHUTTER.
LIQUID, CRYSTAL, COLOR SHUTTER.
HEROES IN AN F-STOP, SHUTTER POWER.
@@phattjohnson Why did I read this in Halo announcer voice.
As someone with photosensitive epilepsy I can't tell you how much I appreciate the warnings, especially when there's a way for me to know when it's safe to look back, thank you.
You're very welcome! As you may have guessed, the first shot with the 3D glasses wasn't originally in my plans, so I could only do that little on-screen warning. Hopefully you found the cut to the next "paragraph" to be enough context that the flicker was gone
Persnickety.
Just imagine an image from Katamari Damaci being flashed on the screen in red, green, and blue.
@@TechnologyConnections Either way it's better than what Netflix did with stranger things 3, where every episode just had a warning at the beginning, instead of just before the flashing started
Its very hard to get the key word when watching at 2x speed
Yes I know that it defeats the purpose of slow motion, but that’s what you have to imagine when really want to watch 12 min in an 8 min time slot
Thank you so much for intense flicker warning. I was on the verge of a seizure and went to watch this to relax. Seriously, not mad, thank you.
I don’t have epilepsy but I’ve always appreciated that he makes those warnings. There’s just something about someone who is always making jokes gong out of there way to look out for those people.
Watching these videos to relax at night in the dark and having a migraine tendency, it was deeply appreciated and so kind. Thank you from me, too!
@Maiahi I politely disagree. In this video, the warning is less than 10 seconds and is usually very short when mentioned in his videos. I'd hope the inconvenience of a few moments of warning would be a small price to pay for the peice of mind of others who have photosensitivity issues. Even if they are few and far between. My symptoms are nothing compared to a seizure, but can last 30 minutes to an hour + if I'm not warned to look away.
If others mistakenly think a few moments of flashing lights will harm their eyes, it's a great opportunity for tangential learning, and may help them become aware of an issue that thankfully only plagues a small percentage of us. I hope you have a good one.
@Maiahi One more small point I’d like to make - having a seizure can easily become more than an inconvenience if the person having the seizure happens to fall and hurt themselves because they lose proper motor function. People watching these videos could easily be watching on their phone while standing, perhaps in the kitchen or garage or anywhere else, as I do often. To have a seizure isn’t just incapacitating, there is a great risk for physical harm - fractures are semi-common as a side effect, which would necessitate many months of healing time. Keep in mind that even if someone doesn’t get physically harmed, having a seizure is often pretty jarring and especially to children, traumatizing.
So while a some people might not be bothered, there is a good chance that the among the many millions of people who watch TC’s videos, a seizure warning will save at least a few of them from things that are much much worse than an inconvenience.
Also, I’m not sure I’ve ever heard of people becoming “convinced” they have epilepsy. Generally it’s hard to mistake if you have a seizure. I don’t get them, but the symptoms and side effects are common knowledge.
@Maiahi Photosensitive migraines are, I believe, actually more common. The whole thing also gets complicated by non-photosensitive epilepsy. It's tricky terrain.
From my point of view, he's probably burnt more of my time with those freeze-frame textual asides than any of the warnings, though. :)
His safeword is "Persnickety." You know it.
I was disappointed he didn't actually use it in a sentence instead of just saying it as starkly as he did
@@deborah_chrysoprase word
Lol
Passes the mumble test, too!
I know mine is now.
Liquid crystal color shutter!
Liquid crystal color shutter!
Liquid crystal color shutter!
Damnit, now I can't stop singing it in my head!
damn you, now I'm infected!
X-men TAS theme may help fighting off this earworm
@@demogorgonzola well, I mean, not the worst thing to get stuck in your head
For those wondering: turn the captions on.
@@nekoill Probably, but I'm kinda afraid to ask for examples. :)
As I continue to go on my audio adventures, well nothing changed from the last video (CED part 2) but *this* time I recorded it during a rain storm! What fun!
Shutter power!!!
Your 'closed captions'-game touches my heart! (One chamber at a time, in quick succession, utilizing the effects of persistence of love. Clever!)
Unfortunately that's how you get an infection........ but I do really appreciate it!
You ARE GREAT :) greetings from Poland :)
You should see about a colab with the slow mo guys and show off some of your cooler things
@@crazyivan030983 O proszę :D
@@call_me_stan5887 Pozdrówka :)
I like the safe word when the flashy, potentially seizure inducing lights are done. Persnickety
I love how you implemented the epilepsy warning into that. My aunt has epilepsy and people who put those warnings in, make her life so much easier
Even when you know how it works, it still seems almost magical - a transparent window that somewhat darkens what is seen through it - except for the image on the screen, that mysteriously becomes coloured.
If I'd seen this on another channel with no context, I would have assumed some video editing chicanery was involved.
Slipping jimmy
I owned one of those DLP TVs back in the day. It was the first HD TV I'd ever bought, back 2005. The LCD TVs at the time had only 60 Hz refresh rates and pixel-response times in the tens of milliseconds, so there was big-time "ghosting" when motion went quickly across the screen. And the Plasma TVs were *so unbelievably* expensive. So I opted for the DLP.
It was a decent TV -- at first. After about 6 months, I noticed it started to get darker in the bottom quarter of the picture. Samsung had created a "light tunnel" to ensure all of the light from the projector bulb would get shunted to the DLP chip -- but, in their infinite wisdom, had only glued in every *other* mirror, relying upon friction between the glued-in mirrors and the not-glued-in mirrors to hold the not-glued-in mirrors in place. Needless to say, after a few months of daily heat-cycles, the not-glued-in mirrors fell off and piled up in the bottom of the "light tunnel," thus blocking a noticeable portion of the light. Did I mention the fact that the warranty was only 90-days long, and they wanted to charge me almost as much as I had paid for the set new to fix it? Needless to say, I took that TV apart several times over the next couple of years to glue in mirrors that they should've glued in when they made the damn thing.
And when the TV was almost 4 years old, I'm sitting there watching it and I hear a "pop." Suddenly the picture went all "rainbow." Not the rainbow effect that you see when you quickly move your eyes, but an actual full-screen rainbow, not moving, across the entire picture. The color-wheel had stopped spinning entirely. The bearings in the motor just flat wore out, and the shaft jammed itself at a weird angle inside the motor housing, causing the color wheel to instantly stop -- hence the "pop" sound.
I inquired at a local TV repair shop about how much it would be to fix it, and I was told that he'd never seen one last 4 whole years -- that particular model's color-wheel motors all had died at 18 months, according to him, and I should consider myself extremely lucky to get 4 years out of it. He then quoted me a price that was more than a new TV to fix it, and refused to give me any warranty whatsoever on the fix, since he'd have to buy the parts from Samsung, and they were the same unreliable parts that had broken in the original TV.
But, by then, LCDs had *greatly* improved, so I trashed that p.o.s. Samsung TV and went and bought a Sharp LCD TV. I was much happier with it.
You are talking about a DLP Rear projection TV right?
I ALWAYS pass by any DLP tv I see on the side of the road, guaranteed to be broken beyond repair. Back in the day I know your situation with buying one because they were great in the store and let you get larger screen sizes without spending 4x more for a smaller LCD or Plasma. They did not stand the test of time though.
I could never stomach that technology. The new century brings . . . mechanical TV!? Pivoting mirrors? Spinning color wheels as in the 1920s? Rear projection? Give me a break. Yeah, plasma started out way too expensive; but it was real progress in display tech. In fact, I hate that smeary, angle-limited LCD displaced plasma altogether.
plasma have active shutter issues as well aka green flashes
Samsung's engineers - pure evil at it's finest form! I've had Samsung LN52A750 LCD TV - top of the line at the moment, which suffered from their once famous "Bulging Electrolytic Capacitors" problem.
It was a simple fix. But to my shock, when I opened it's PSU, all problematic capacitors were mounted tightly alongside pretty much only heatsink on the board - so they gonna blow up when their time will come, - about 2-3 years after first TV's use!!!...
-Thanks gods their mobile phones design department completely separate from TV's!.. :)
I worked at Tektronix for a few years. Not many people know it but in order to build newer and better test equipment (oscilloscopes, meters, spectrum analyzers) they actually made quite a few tech advancements over the years.
and I figure they were quite content to just keep making oscilloscopes and whatnot instead of branch out with their shiny tech.
@@kargaroc386 Oh they make WAY more than just o'scopes. But probably most famous for that because damn near everywhere you go theres a Tektronix o'scope. For a while we had decades long support for individual models. When I started there they had just let go of about 90 percent of their service techs, and had stopped supporting models older than 6 years.
they made some crt's with ceramic funnels and a few crt were made with a micro-channel plate behind the phosphor screen to increase brightness because they would have been to dim on faster sweep rates.
@Shorty_Lickens I wish Tektronix had never sold their broadcast video division. I miss all the documentation and research they used to provide the industry. They were a huge resource that is missing in modern video standards
That's so clever! It combines the advantages of B/W CRTs and color tv: Smoother image, the lack of shadow mask increases effectiveness and reliability of the tube and higher brightness of the image. Even when the electron gun cathode wears out you'll just see dimmer image instead of change in white ballance. Simply amazing.
You could make a color Vectrex or a color dot matrix VFD using this technology.
Don't try making "shorter" videos. The more explained, the more interested! We're geeks. That's why we are here!
He has access to statistics of watch-time. If most people quit after 10 minutes that's the length he should try making.
@@LaughingOrange We are the geeks. WE WILL WATCH!
@@LaughingOrange I'm perfectly fine with videos that span 30+ mins, I prefer them over quicker explanations
i definitely see either perspective
i adore longform content too but we have to accept that we're the minority opinion and it's just not always practical to make an hour long video when most people click off in ten minites
It was just a minor goal I'm sure. Achievement Get: Make a shorter video. Not necessarily an indication of the future.
"Persnickety" LMAO
persnickety
adj. Overparticular about trivial details; fastidious.
adj. Snobbish; pretentious.
.... wait does this comment apply as being persnickety?
I honestly thought that was just going to be part of the script, and was slightly disappointed that he just said it on its own.
Maybe that word means he occasionally sets the chroma way too high.
@@FirstDagger no, your comments is defined as fancypants.
@@KaeYoss ; Well that jollies up my mood, hope you have a fine day or night yourself.
I gotta say, watching an image of the King of all Cosmos rapidly flicker between very contrasting colours is the closest thing to an LSD trip I've ever experienced.
Man, that PS2 menu screen is triggering some major nostalgia. I love it.
That and chitty chitty bang bang. Watched that movie so much as a kid
@@bakedpotato1744 same I had it on dvd when I was little
Aaand now I'm singing "liquid crystal color shutter" to the tune of the Ninja Turtles theme song.
Dan
liquid crystal color shutter
liquid crystal color shutter
liquid crystal color shutter
Makes your image
Colorfull!
Nostalgie Lets Plays the lyrics are actually in the captions at the end. Right after the joke
And now I am. :(
damn you
And now I am. Thank you
My grandmother had a b&w TV well into my early childhood but I was always amazed at how her TV could show colour whereas mine could not. She had this filter plate that was hung on the face of the TV that if looked at straight on would give a great colour image. The more your angle of viewing increased the colour would become washed out until eventually all was b&w again. She couldn't tell me where she got it only that it was in the late 1960's. I have to suspect that this is the same filter used on the TV in this video.
Fascinating. This is the application I was thinking of when watching the video- although it’s redundant now. Why would you need one? Apart from watching old black and white films! Do have any examples of these filter plates and what they were called etc? I never knew that this was a thing so it’s really interesting to discover and find out more.
A filter like the one he’s showcasing in the video? That wouldn’t be possible he goes over how they work they require special base TV’s. It could’ve been the color wheel that he brought up, but you would’ve known. It’s a huge wheel with a tiny opening for the tv screen. It looks pretty absurd and you didn’t bring up how huge this device was. I’m not sure there’s really any other option though
I read about those filters. They give wrong colors. It's not the same that you're watching here. To have the correct colors, you need the television set receiving the image, decomposing it to the three separate color components, save those three monochrome images in memory... then scan the monitor at 3x the normal speed (thats 180 whole scans a second vs the 60 scans tvs normally do) No tv set had memory nor any of the required circuitry to do all that in the 60's....
Oscilloscopes are my favorite pieces of tech ever made. I remember finding one in my schools science lab in grade 10. My friend who was helping me look for bunsen burners asked me what the hell it was. I was in shock at what we had just found!
"This is some freaky stuff man" I agree with you. When you were flipping the filter up and down 😳 it looked like sorcery.
5:00 the king of all cosmos has rarely looked so trippy 😂
Definitely the right game to showcase supersaturated colors and trippy ghosting.
and that's saying something, considering that game is basically a playable acid trip
This channel is like a historical archive and analysis of tons of tech either I or my parents grew up with and I just love the thought and care and wonderful humor put into it.
Okay, this is seriously cool. I thought it would be a CRT providing selective backlighting behind a color LCD screen -- I never thought of using the _entire_ LCD as a color-selective shutter for displaying 3 different B/W images on the CRT with different color filters applied.
When I say Persnickety you will wake up and remember nothing.
Why am I here?
??
why did I buy a 50 year old toaster on ebay sir
@@ThePsycotrip because it lowers the bread automatically 😉
Just to add a bit more info on Tektronix role in this:
Tektronix actually invented this color LCCS technology for use with their Oscilloscopes back in the mid-1980’s! You see, before digital storage oscilloscopes were a big thing everybody used analog scopes. The difference is that while a DSO uses an ADC to store voltage readings and then digitally display them, an analog scope directly displays the voltage readings by (essentially) hooking them directly into the vertical deflection amplifier of the CRT. This meant the incoming voltage directly controlled the vertical position of the beam on the CRT (the horizontal position was controlled by a sawtooth oscillator that moved it left to right over and over again at a set rate). This means the waveform you were viewing was a vector and thus had no “pixelation” or resolution limitations, aside from the phosphor dot size of the CRT. (Think of old vector arcade games like Tank Commander.)
Now, this is great but has one disadvantage: These CRTs were a bit special, using electrostatic deflection instead of magnetic deflection like a CRT TV uses. This is for speed and control. (Think about how fast the beam would need to be deflected to view a 1GHz signal!) You also had a limited choice of phosphor colors (generally white, amber or green-blue), because the phosphors needed to be “long persistence” and *very* bright so you could see waveforms at very fast sweep rates. On top of this, due to the way the scopes work, using a shadow mask was out of the question. So, there was no real way to make a color analog scope. Until Tektronix came up with the NuColor LCCS system in 1983!
Using polarized color filters and LCD shutters they were able to release several color, high speed analog scopes in 1984 and 1985! However, it didn’t end there: They went on to further develop this technology and put to use on their digital CRT raster display scopes in the early 1990’s! Due to the lack of shadow mask and additional electron guns, B&W CRT monitors are much crisper, higher resolution, lighter, cheaper, smaller and less complex than color CRT monitors. So, Tektronix used this LCCS system to provide a high resolution color CRT that was much better than any comparable color LCD or CRT monitor on the market at the time. An additional advantage is on the lower-end, non-color version’s of these scopes they could use the exact same CRT, chassis and components, they would simply leave out the color filters, LCD shutters and drive electronics. This greatly simplified the manufacturing process.
Some of the Tektronix TDS500, 600 and 700 series scopes released between 1990 and 1995 had these displays and they were *amazing*! Super crisp and very vivid colors! I’ve got a 1GHz TDS700 series scope with one and it’s very striking to look at. (The only issue is if you’re not looking directly at the screen, but instead catch it in your peripheral vision, the flickering is noticeable.)
Sadly, by the late 1990’s/early-2000’s LCDs started catching up and the technology was abandoned.
Sources:
(1) w140.com/Oscilloscopes_in_color_tek_5116.pdf
(2) hackaday.com/2019/01/17/sharpest-color-crt-display-is-monochrome-plus-a-trick/
Tektronix scopes are great. I was a tech years ago and the rule was generally, "Tektronix for o-scopes, Simpson for meters, and Hewlett Packard for all other test equipment."
Sadly, I don't think HP makes test equipment anymore; they are known for consumer computers now but until the 90s HP made really high end test gear. At least Tektronix is still around, last I heard.
@Helium Road Yea, HP made excellent gear back in the day! I’ve got quite a bit of their early-80’s vintage gear sitting on my bench, still in regular use. (Frequency counter, 7.5 digit DMM, precision power supplies) and they are rock solid. (They were much cheaper and just as good as modern alternatives, albeit quite a bit larger!)
HP still makes lab equipment to this day, in fact they make some of the highest performance test gear currently on the market, including scopes.
In the mid-2000’s HP spun off their test gear division into a new company called Agilent. Then, a few years back Agilent split again, creating a new company called Keysight to handle just electronics and RF test gear, while Agilent focused on biological lab equipment.
So, they’re still around, they’ve just had a few name changes.
Tektronix is also still around, they still make good scopes, but the transition to digital was hard on them. They were bought up by a conglomerate in the early-2000’s. They also bought quite a few other smaller companies, such as Keithley (who made some of the best DMMs).
So, they’re both still around, Tektronix has come out with a few innovative scopes in the last couple of years, but they’re still behind Keysight in terms of price/performance in the high end. Both companies almost complete got out of the low end, which is now dominated by Chinese companies like Rigol. (Tektronix is still strong in education, but that’s likely due to a stronger sales force and massive discounts.)
Do all analog scopes use electrostatic deflection?
I've got a Tektronix 453 scope right next to me right now and I love it. Never realized it might not actually be using magnetic deflection
Any CRT display that uses vector beam movement must use electrostatic deflection, and here’s why: electrostatic deflection is proportional to the instantaneous voltage applied to each pair of plates (the beam passes between a pair of plates above and below the beam, and then between a pair of plates on the left and right; each pair of plates pulls the beam toward the plate with a positive charge and pushes it away from the plate with a negative charge). Since the amplified signal waveform, and the sawtooth sweep waveform generated internally, are both voltages, and the plate pairs draw no current, the beam is deflected at each instant according to the voltage.
Magnetic deflection, on the other hand, uses the changing magnetic fields generated by two two-piece shaped coils of wire combined into a yoke around the neck of the tube. The deflection is proportional to the CURRENT flowing in the coils at each instant. But a coil has self inductance (because it generates a magnetic field), and the wire has resistance. This makes the current flow waveform different from the voltage waveform, and the relationship between them depends on the frequency (the higher the frequency, the less current flows) of each spectrum component. For raster scan devices, both deflection current waveforms need to be sawtooth waves, of two standard and unvarying frequencies. So the horizontal and vertical oscillators each generate the VOLTAGE waveform that will create the desired CURRENT waveform at the designed frequency. This is much easier than feeding a RANDOM UNKNOWN voltage waveform into a black box that will turn it into a different voltage waveform that will make a current waveform that looks like the original voltage waveform when applied to the specific model of deflection coil.
Magnetic deflection can move the beam through sharper angles, allowing a shorter neck length for a given screen size than electrostatic deflection, but it’s only practical for raster scan applications such as television and displaying regular arrays of pixels from a computer memory, not for randomly moving one pixel around a screen in a random pattern.
@@allanrichardson1468 , Not entirely true, early 'Tank' arcade machines, and the 'Vectrex' home game machines used magnetic deflection, using standard B&W TV CRT's. However, compared to an electrostatic tube, you have to settle for far less lines being drawn on the screen.
You have no idea how much I appreciated the "intensive flash warning"
I read that as "intensive fish warning"
@@Fuzy2K yeah you gotta watch out for those damn fish they can be intensive as hell
Me, too. Never been diagnosed, but flickering as I've gotten to middle age makes me very uncomfortable. I have to look away or just close my eyes. Don't know if I'm facing a neurological episode with greater exposure, and I don't wish to risk it. So thanks as well.
Why you no like flashing?
Back in my History of Mass Communications class, circa 1990, we were told that the CBS color wheel had to be made of glass because they didn't have all the plastics and polymer stuff we have today, and the wheels had a tendency to shatter from the force of being spun at high speed which sometimes caused high speed glass shrapnel to be ejected out of the tv.
Sounds like they could've advertised that as a good thing. "CBS Interactive Westerns! Will you be the lucky viewer who gets to feel what it's like to go toe-to-toe with Marshall Dillon tonight on 'Gunsmoke'?"
I worked in video film & video production in the early 2000's and I recall using these monitors on the sets because, as you say, they worked well in bright ambient light. SONY also made a small high brightness monitor for on-set or location use, but they did it by over-driving the CRT tube and then putting a MASSIVE heat sink around it, which made them quite heavy for their size, and they still got uncomfortably warm if you put your hand on top of one. These JVC's, which had slightly less accurate color rendition than the SONY's, were preferred by the crews due to their much lighter weight and cooler operation. (The last thing you wanted on a big film or video set were devices that add more heat) So we used these monitors for general lighting and camera/action blocking purposes and,, then we usually had at last one professional SONY or IKEGAMI monitor to make color-critical decisions.
1:11 never thought i'd see a sbubby here but i love it
twitter.com/wiki_tmnt
So would I as one of /r/sbubby's moderators.
What does sbubby mean
@@PyroscityA logo edited to say something else
I keep coming back to, and rewatching this episode. Excellent production, peculiar topic. Real winner! Great job, man!
Your explanation of projectors was very insightful. We had smart boards in my HS that used EPSON projectors. Images displayed on them would show RGB on their edges if you darted or rolled you eyes quickly. I always wondered why that phenomenon happened, and you clearly explained why. Thank you.
11:58 "Do you know why chicken coops have two doors?
Well, if they had four they'd be chicken sedans.
This is not what captions are generally used for, but I don't play by the rules"
xD
Oh my.
easter egg
Unfortunately, this joke doesn’t work too well in the United Kingdom of Great Englandland. We pronounce coop and coupe differently (preferring the more Latin derivative “coo-pay” for the car) and we call a sedan a saloon. And we prefer hatchbacks.
@@leopold7562 we also call chickens _"featherlings",_ doors _"hingewalls"_ ... and the United Kingdom has been officially a _"Queendom"_ since the 1953 coronation of Queen Elizabeth II - or, as we Brits call her, _"royal mommy"_
@@garychap8384 No, we call her "Royal Mummy". Mommy is an American word.
"You cannot hear picture!"
*Turns on PS2 without sound
"HOW THE HECK I CAN HEAR ITS STARTUP?!"
The PS2 was/is one of the coolest consoles created. I love the spacey boot up animation and sound, as well as the screensaver type thing in the "OS." So relaxing...
'TURN IT DOWN!! im tryin to sleep!'
"i just plugged the Yellow cord in, the Red/White cords arent even connected!"
Then the Katamari image: "na na..........."
@@Ck87JF Agreed. I've been accused of being a PS fanboi and I'm happy to wear the badge. My launch day PS2 was the first console I bought and the damn thing is still kicking. Even got the 40GB HDD... which is just a glorified memory card. Ain't care, still got game saves from 15 years ago on it! Now if you'll excuse me, I'm going to play _The Bouncer._
@@kurtownsj00 Best game. Ever.
Wow, I love weird stuff like this! It was totally worth binge-watching all your videos after I subbed! This is a perfect example of this channel, talking about something odd then episodes later a new device that works on the same idea but achieved differently. Awesome! And again, it's worth watching till the end because the outtakes are more special this time!
The warnings about flickering images is incredibly helpful and most appreciated here! I’ve always loved your videos, but the warnings here are so especially fantastic. Not having earnings would have ruined my next couple days via migraines, but your simply saying something about when it begins and ends really saved my week. Thank you for that kind of consideration.
-slaps a CRT- "The safe word is persnickety."
Darn it. Beat me to it. A month before me. :LOL
5:11
The nature of the camera's
*_Lonely Rolling Shutter_*
I love watching with captions for comprehension, but watching on this channel is just treat.
You forgot to mention a B/W CRT tube has potentially three time the "resolution" of a Color CRT because of the lack of shadow mask. So for tiny screens like these, that´s very important. I´m pretty sure that´s why JVC wanted to build: A small but yet "high resolution" TV monitor.
8:56 _"Now I'm sure some of you have been screaming this at your screens for some time now"_
*~Na, naa na na na, na naa naa naa na, Katamari Damacy!!~*
... oh, that's not what you meant.
We're not worthy of such an amazing comment
It was a good choice of video game to show while messing with the display.
Royal Rainbow!
O actually was singing “liquid crystal color shutter”
That Liquid Crystal Color Shutter logo was bomb
It was radical!
@@IanTester cowabunga,dude
twitter.com/wiki_tmnt
In Europe it was called “Liquid Crystal Hero Shutter”.
Shutter power!
You have a way of getting me to watch videos about things I never knew existed or cared for and end up enjoying them. Thanks!
I'm a viewer since the very early days of your channel. I'm also a "hypernerd" as my group of friends have termed ourselves lol, so very little content on your channel is new or surprising to me (I mostly watch for your excellent presentation skills and to be honest your fantastic personality). This video was the first video which definitely blew my mind. The principle almost seems simple but the results are pretty magical and your ability to demonstrate this, particularly to A/B it with a conventional mask CRT... flawless presentation. You deserve all the things for this level of quality and effort. Sincere thank you from me. Stay safe and healthy.
Me, watching this: It sounds like DLP...
Alec: Its a lot like DLP!
Me: :O
Kellanium without a light engine
I want to know why Apple’s “True Tone” displays turn very reddish for a split second when you turn the brightness down, and turn bluish for a split second when you turn the brightness up.
My Dell laptop does the same thing.
mine doesn’t do that
It's obviously due to it moving away from you when you turn the brightness down; and towards you when you turn it up...
from what I can tell on reading, Apple's true tone works by changing the white balance of the display to match the brightness of the environment. dark = more red (2700k say) bright = more blue (6500k maybe)
@@NonFatMead ??
This channel is incredible. So lucky I found this. Much respect, man. You're great!
This is fascinating and amazing! Love how this channel teaches me about tech I didn’t even know existed!
I think a 4K Phantom could come in handy here. Hey, @SloMoGuys, meet @Technology Connections.
DaKermitFrog being the best doesn’t make it good. It just makes it better than the competition, and considering google has practically infinite money to throw at the problem, the competition isn’t exactly stiff.
@@Islacrusez more money more problems, they invest less and less in practical issues and more in cash cows until the product becomes unusable, a'la the search engine that made them who they are
Dong Harvey I think that’s roughly how we ended up with TH-cam being a sack of garbage :)
While they're at it, they could break out a DLP projector too.
@@Islacrusez TH-cam was still pretty decent a couple years back, the ridiculous copyright strikes and demonitization are part of what makes it bad now. Despite the issues, it still is the best platform for online videos, there is no other service with as powerful and large of servers where hundreds of thousands of people can upload videos at a time. I just wish the fools in charge would get a reality check, they treat their biggest creators like garbage.
Liquid Crystal Color Shutter, Liquid Crystal Color Shutter, heroes in a CRT, Shutter power!
Herbie Husker why doesn’t this comment have 100+ likes
I had no idea this technology existed. It's pretty amazing to see a crt screen without the rgb phosphors. I like how it's perfectly smooth without any dots.
Crazy to think we had that stuff when I'm watching this video on a near perfect screen that is likely larger than that and the whole device itself is many times smaller and has an unimaginable amount of functions to someone back when that was released
I love that you used Katamari Damacy in this. It's one of my favorite games (and I still have my PS2 to play it)
I can play it in pcsx2 on my PC after getting a disk
It would be *fascinating* to see this thing through a high end slow-mo camera.
So, in case the watchers didn't get it, the most practical application of LCCS was to make small screens practical. Before then, really small CRTs were still black and white even well after they were considered as antiquated as Disco. That black and white TV that Alec shows in his videos to mess with the vertical hold to show the blanking interval was from a time period when those mini portable TVs were the only kind of black and white TVs still made and they were made because the color TVs of that size were like the one at 7:33.
My uncle described this is how they (my family) first watched color tv when he was little and it absolutely blew my mind.
Thank you for all of the flickering warnings. I'm photosensitive and get nasty ocular migraines from these types of visual effects, so the heads up is greatly appreciated. I wish more creators were this respectful about it.
4:59 blink really fast, trippy AF
This is exactly what he was explaining earlier !
if you blink at the right rate you will only see green, or if you start blinking fast enough a little earlier , you'll see only blue, etc
instead of using your eyelids they have a shutter instead to do it for you lo
watched this video on a DLP projector... Got up and tried waving my hand in front of it, and the rainbow effect is real and striking! Super cool. Great explanation.
I remember watching a related video made by the 8-Bit guy who used a B/W camera to take color photos but he used 3 different color filters to take still images and then put them together. In any case, I watched a few of your videos and found it cool. Subscribed!
Cool, I never would have thought that something like this existed in the year 2000.
It reminds me of how space probes capture color photos, but in reverse. The objects the probe is photographing rarely show any motion in the field of view, so they simply take three black-and-white photos, each with a different color filter in front of the sensor.
My old Amiga Digi-View worked the same way. It consisted of a video camera and a motorized color filter wheel. And was sloooooooooow.
It's weird considering the niche technologies that existed around the year 2000 but which didn't catch on in the mainstream.
the existence of a HD-VHS format especially caught me by surprise, learning about it after the fact.
1080i digital video on what was basically VHS tape. Who would have thought it?
"This is a black & white image". Could have fooled me.
That's exsactly the point.
With what invention will they come up next? A colour display that shows black and white images? 😋
Yvan, why do you display such insensitivity for those people out there with colour blindness? lol
But it's NOT! It's monochrome.
on a side note, thanks for typing "could have" instead of "could of"
Ohhhhhhh so that's why I see the colours on a projector separate when I move my eyes fast. It's shining each sequentially!
I don't need captions for these videos but the extra easter eggs you put in make them a joy to read as the credits scroll up
I love the TC theme song. It sounds like a wholesome old school sitcom.
I always think of Bob Ross'The Joy of Painting' for some reason, just reeks of that late 80s/early 90s daytime TV show vibe and it's awesome!
The old Bally home video game Vectrex had shutter googles that could have a color wheel so you'd get 3D and color. However, the color wheel was custom to each game, as opposed to the "normal" games (which didn't use the shutter goggles) that had a color pverlay on the the screen.
Your channel is amazing! Just felt the need to put this out there!
Here I am watching this video one year later and the moment you said colorization my phone went from night amber mode to full color mode. For a few seconds I was convinced that you were a wizard.
I fell bad for the epileptic folk that had to miss King Cosmos' acoustic RGB rave.
Hey - newer DLP projectors use Red Green and Blue lasers or LEDs now and have a much faster "colour wheel speed equivalent". 5x speed or higher now, and the rainbows are essentially imperceptible.
DLP is still vastly inferior, and a solution looking for a problem. Solid-state solutions that only emit light when needed and not relying on brain tricks are the future. OLED is almost the holy grail of display tech.
@@ryanb9873 they need to release 4k Grating Light Valve (GLV) scanning laser projectors. A few manufacturers have released GLV pico projectors though they are extremely expensive and dim due to FDA laser regulations.
The future! Bringing back the equivalent of phosphor burn in for a whole new generation.
@@ryanb9873 Inferior to 3-chip DLP perhaps, but the cost of that technology is ridiculous.
As soon as a decently priced OLED 100" TV is available, I'll switch.
@@voltare2amstereo Is the rainbow highly invasive? If it is, the wheel-speed equivalent might be low. The original firmware on my BenQ X12000 was 1x and horrific, but a patch updated it to 5x and I can't detect rainbows unless I vigorously shake my head or hands in front of the image.
I appreciate you posting this, for some reason I am super intrigued by this.
My grandmother had one of these, 15 years ago. I never was able to figure out how it worked. Thanks for the video.
If I would seen this as a kid, I would thought there is magic for real! First seeing him opening and closing the glass, I was like "How in the fuck is that possible???" With that in mind, I would think that I could turn a old regular gameboy into a gameboy color by simply putting that glass over the screen! Turn night into day by putting a special film on your windows in your house. Talk about paradoxical science!
You are the best Alec! Your videos always bring me joy!
LMAO I love the closed captions at the end, too freaking hilarious! This channel is AWESOME 👍👍
Always learning something new from your channel!
Also, i love the lil easter egg with the closed captioning at the end of the video! Like TMNT song lol
It’s 2019 and I never heard of that kind of technology. Cool!
Same!!
It's like an LCD TV with potentially infinite local dimming zones with great dimming response and precision. haha
no this has nothing in common with LCD at all besides the LC 'shutter' itself, otherwise its just a CRT variant. In an LCD panel the liquid crystals are the individual pixels, in here the entire 'shutter' is one giant pixel.
@@Blox117 An LCD works by shining a backlight through a liquid crystal matrix, which blocks certain colors of light (or none or all) to make different colors. With local dimming, certain parts of the backlight can change intensity to create better contrast. What Matthew is saying here is that this is like a LCD with infinite local dimming zones because the CRT component is essentially acting like a super high resolution backlight, being able to control exactly where there is more or less light in the picture. The LC shutter then acts like the liquid crystal matrix by selectively blocking light.
@@Blox117 key word is "like"
@@ericw.1620 The whole front panel isn't a matrix if I understand the video correctly. It's just one giant pixel (or well 3 bars apparently) that flickers 3 colors as an overlay to the black and white image. How they manage to to make convincing colors on the entire image is beyond me. But that's what it does. The very high detailed local dimming you refer too is also responsible for al the detail.
Hisense was demoing a TV with pretty much that idea at CES this year. Essentially they put a 1080 B&W panel behind a 4K colour panel and got some pretty impressive contrast. In combination with full/partial array local dimming you could get decently low cost high contrast screens on the market and make HDR a consumer standard and not just an enthusiast one. Since Hisense isn't what anyone would consider a high end brand they're pretty much one of the best to bring it to market.
I really do love your captions. They are amazing.
"Chicken Sedan" actually got me good! Nice touch with the subtitles at the end, interesting content as always!
Well now I have the Katamari Damacy theme stuck in my head...
Nah nahhh, nah nah nah nah nah nah nah, nah nah nah nah nah nah nahhhhh.
Again.
I got triggered when I saw that, massive flashbacks to college
I just exploded with nostalgia.
While posting an answer to a question below - about how the monitor is storing a video field and then displaying it multiple times for each colour filter... I got to thinking...
So many things are "easy" now that we have fast plentiful digital memory (and ADCs/DACs) - but it wasn't always so.
One of the brilliant features of analog Tektronix oscilloscopes was that they could view the "trigger" event. This is such a trivial thing to do in the digital domain - but those CROs had a big analog delay line - so the signal could be displayed a little bit before the trigger occurred.
Similarly, television stations had "video character generators" for putting text over the pictures. It always looks nicer to put a border and drop-shadow on the text to distinguish this from the background. This was achieved by generating a separate shadow and delayed image which were then combined. How was the delay achieved... by a great coil of coax cable inside the machine.
This is quick becoming one of my favorite channels
1:18 I love how Alec props up the LCD on either a Speed Booster or on an Adaptor from one Lens Mount to another
Hah, I said to myself "Isn't this like an early DLP?" and sure enough it was. What a cool piece of hardware!
DLP is a completely different technology with different underlined principle. Color wheel works the same yes, but actual image on the DMD is shown instantaneously with color wheel sync each color frame
I love the closed captions. Especially at the end :D.
Same. That's all I came here to say.
I’ve been working in TV news production for 23 years and we used these years ago, though I didn’t know about the neat tech :) but $1200 is actually quite cheap for pro gear. Even today a small, pro portable monitor with SDI and built in image tools, etc costs thousands of dollars. Though more used in pro cine applications so can get proper focus and really see what you’re shooting
Just hit the notification bell for the first time ever because of your channel. Every video is seriously so interesting and well put together.
Somewhere in the early 70s the BBC tv technology programme "Tomorrow's World" broadcast a piece on B&W with *spot colour*. On my home tv it actually showed bright red, even though it was a mono 405-line crt set! I think it was something about making the image flash very fast.
Fechner color, apparently: forums.digitalspy.com/discussion/547549/tomorrows-world-colour-experiment
Unfortunately the Java apps linked to from there are pretty hard to run with a modern browser.
I've seen the classic spinning-disc version of this at science museums, and it can be a powerful effect--pretty limited, though, and it'd involve rapid flickering.
persnickety adjective
per·snick·e·ty
Definition of persnickety
1a: fussy about small details : FASTIDIOUS
a persnickety teacher
b: having the characteristics of a snob
2: requiring great precision
3: a word used to let others know it's safe to look again
Thx Pac man
Nice
So… Pedantic.
No way, I never thought I’d see you cover one of these beautiful sets! I’ve seen some people talking about these, and some footage shot off of one, but I’ve never seen a full examination of one.
The picture seriously looks amazing through your camera, but I’d love to see one of these in person.
Watch out Just Another TH-cam Channel,
You're trying to get a colab,
All you'll get is trapped in one of them shadow boxes behind that desk.
The closed caption "extras" are always a highlight in your videos!
When I was 24 (48 now!) went to a tech expo in London called ‘Live 95’. Sharp were showing prototype 3D lcd tv’s that were about 6” at best. They were basically 3 or 4 panels arranged a few centimetres apart and the onboard processing split the image into background, midground and foreground images to approximate 3D without glasses. It worked surprisingly well but I think you had to view head on... would love to see a video on it as I never saw it again in print media, on TV or online again, it just completely disappeared and anyone I told back in the day just straight out told me I was bullshitting! A side note is that the 3DS reminded me a lot of the output, although that was a lenticular system. Love your channel , thanks 💖
It took me way too long to figure out that it was just the King of the Cosmos flashing between red green and blue. I also love your subtitle jokes at the end
As soon as you pointed out the tube was black and white within the first minute, it immediately struck me how cheeky this design is for the time. Using the tube as a backlight for the colored LCD screen.
None of this makes sense to me .......but watching it makes me feel smarter.....
Id love a 20" crt with that tecnology. Vga being rgb and having v and h syng would make the electronics much simple, just a multiplexer synced to the v sync signal
Trivial now, but RGB signals have been around since the 80's. You'd expect commodore or someone to have come out with a computer monitor. I suspect the problem was that you need three framebuffers to hold the signals and then a way of playing them back at three times the regular rate. But what's weird is that even a C64 could have driven such a monitor if the monitor was designed to work with it, using its own video memory to serve as the framebuffer. I suspect the issue comes with having to generate a video signal at three times the framerate. I don't think these problems were insurmountable though, so not seeing a single computer monitor in the 80's or 90's to use this tech just seems odd in hindsight.
My mum had a 26" CRT TV... they were heavy as hell and fat as fuck! We should be glad of flat screens... lighter, larger and eventually over time.. cheaper.
@@CrazyInWeston and better
@@nathanmead140 true!