How does Multitouch work?
ฝัง
- เผยแพร่เมื่อ 22 มิ.ย. 2024
- Have you ever thought of your smartphone's multitouch as similar to your skins ability to sense touch?
We take for granted being able to sense our environment, but designing an electronic device's ability to sense the environment is no trivial task. Learn about how multitouch works in this video!
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Made by Teddy Tablante
Table of Contents:
00:06 Electronics Sensing the Environment
01:08 Section 1: Understanding the Grid
01:59 Section 2: Sensing at one intersection.
02:52 Section 3: Issues with the touchscreen
03:57 Section 4: Scanning Rows
05:12 Section 5: Outro
Background Understanding: Electrons & Electric Fields, Capacitance
Key Branches from this video are: Touchscreen Displays, Capacitors, Measuring Capacitance, Electric Fields
Erratum:
None… yet?
Animation built using Blender 2.79b www.blender.org/
Post with Adobe Premiere Pro and Adobe After Effects
Sound editing with Reaper
Work Cited:
3M Touch Technology Brief. (2013). “Projected Capacitive Technology”
Barrett, Gary. Omote, Ryomei (March, 2010) Projected-Capacitive Touch Technology. Frontline Technology
Fujitsu. (2012). "Capacitive Touch Sensors: Application Fields, Technology Overview and Implementation Example."
Geaghan, Bernard O. (2013) United States Patent No. US8363031 B2. US.
Kent, Joel et. Al. (2001). United States Patent No. US6297811 B1. US.
Li, Tianhao et. Al. (2014) United States Patent No. US8823678 B2. US.
Walker, Geoff. (June, 2014) Fundamentals of Projected-Capacitive Touch Technology. Intel Corporation SID Display Week
Wikipedia contributors. "Touchscreen." "Skin." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, August 30th, 2018
Music Attribution in Order:
Morning Dew from TH-cam Audio Library
Clover from TH-cam Audio Library
Under Cover by Wayne Jones from TH-cam Audio Library
Plaidness by Francis Preve
• Plaidness - Francis Pr...
Sunburst, Tobu & Itro is licensed under Creative Commons Attribution License
www.7obu.com
• Video
#Multitouch #How #Smartphone - วิทยาศาสตร์และเทคโนโลยี
Make this guy famous! Your teaching skills are amazing!
4 years later he was famous now
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I understand how difficult it is to make such high quality videos ( the animations and the editing )
I think this is a very underrated science channel on TH-cam .
Wish you all the best for your very bright future
This channel will have a high peek in views some day
I've been trying to learn how capacitive multi-touch works for a few weeks now. I'm glad I stumbled across your video, you did a great job explaining the concept and your visuals are fantastic. Keep up the great work!
Love it! Short and sweet
Crystal clear explanation and visuals, and a fascinating subject-thank you for satiating my curiosity!
Always great videos
This is really great, thank you!
Years waiting for this explanation. Thanks!
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great video... I like the animations and insights in what goes on behind what we take for granted every day.
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Great video! I like how we are finally getting into the "branching," part of these videos, and I think that's a really good unifying theme and works well.
One criticism is that the main "tree," is a little dense and hard to read. I think if it was 2D or organized differently it would be really cool to be able to track our progress as we go through the series. A neat trick to try might be to make the current branch glow, and have the rest get darker as the light travels through the branches.
The graphics are beautiful and add a heightened level of clarity to the explanation.
This lesson is so amazing. Thank you so much for the explanation, God bless you man!
All your videos are fantastic.
Great job man......huge thanks.
Brilliant. Explained all that pretty well. 👍
Great work!👍
GREAT DETAILS IN ALL VIDEOS
THANKS
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It would be interesting to see a comparison with the pros and cons to capacitive vs resistive touch screens
Thanks for the good idea!
Great job. Keep making this kinda videos.
Thank You for this wonderful video.
I'm learning so much about how things work, it makes me realize how much i take everyday technology for granted.
Thanks to all the Engineers who make our modern world possible.
AMAZING this channel has a great future
Love you work
Pls make more videos like this
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Great video. Do you have any episode explaining resistive touch screens?
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Great video understood a lot about the touch screen
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help me a lot
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Thanks!! Hope ya like the future videos.
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quality videos, makes very easy to understand
Thank you!
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Thanks! I'll keep it up.
Superrrb Awesome Fantastic video
This information was very good and video was nicely made,please explain further how touchscreen detect(sense) the disturbance in the field actually,like what components are used and all to detect.
Im learning!!!! How dare you. I need more now!!!
Amazing videos! very informative!
Please keep making such videos. Can you make videos on different components of mobile phones, RF & WiFi technology, etc.
Thank you! Yeah, somewhere in the next 5ish episodes will be a good episode on WiFi.
I'm the big faan of your video sir..thanks for this knowledge
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Good video. Please make a video about fingerprint sensors.
Thank's
I wonder how screen fingerprint scanners on smartphones works. I really enjoyed this video!
Nice channel....
Needs more love
Can't believe this channel had 11K sub
nice
Upload video on quantum mechanics and respiration, photosynthesis with detail
loved your job
if you could explain proximity sensor, battery charging and discharging, vibrations, memory, r.a.m. and backlight control
Thanks!! I'll get to all of those in due time.
Plz make video on electromagnetic spectrum
I don't often comment as long, but this channel really needs to spread out, these animations seem difficult to produce and the final result is WOW, I don't get why this video is 28k views only, it deserves a lot more, isn't this heavily underrated channel better to watch than those other BS channels I don't want to mention?
Hi.
Did I heard a Sound, generated in the Software Reason?
Anyway.
This is one of the best Video Presentation Structures I have ever seen... [Exaggerations about my exaggerations are... ;) ]
Thank You very much and please do more "Branches".
Nice Information about this.
Sir I would request you to make a video of how laser keyword works. The science behind it if possible.
Thanks for those video.
God Bless You.
At 2:09, shouldn't the direction of electric fieldlines be in the opposite direction, i.e., emerging from the positive charge and into the negative charge? Since it produces negative electric field, it was have inward flux right? Great explanation though, highly appreciate the clarity in the concept!!
Awesome explanation!! Thank you teddy tablante!!
Thanks!
Make more videos like that
Sir plz Make a video on SoC how it works and what are inside
Can u eloborate subject and length of video too. Amazing concepts of technological aspects.
Nice work! Appreciate it!
But I dont quite understand the readout principle. Does the ADC measure the votage of the whole column every timestep?
Btw is it similar to how the CCD read out the charges?
An entire column is read out by a set of 80 or so ADCs in a similar format to CCDs.
@@BranchEducation Got it. Thank you very much. Keep up the outstanding work!
Thanks..Maya🚩😘...
Blender FTW 😍🧡🆓
Learn engineering sent me
Hi Teddy. What makes a capacitive touchscreen more responsive in comparison to a resistive touchscreen?
Most of it depends on the number of rows vs columns. Resistive touchscreens have really good applications where pressure needs to be sensed accurately. I'm sure engineers can design resistive sensory inputs for different applications. For example, I wonder whether engineerings will apply resistive sensing arrays onto the limbs of robots.
I'm new here, I liked and subbed, can you show us how hardware works? If no, no probpem
Yeah! We will get to the rest of the hardware elements throughout the videos.
You and lean engineering should work together or make a new channel together. I think it would help many people to understand more about technology.
yup! We will do collaboration soon. Should be fun!
We are providing technology for all sector
I have an iPad, HomePod, Apple TV, and Apple Watch. Of course, I’ve got an iPhone to. But, how does the touchscreen work in the Homepod, Apple TV remote Trackpad, Apple Watch, and iPad?
Among current touchscreens is there a limit to the maximum number of touch points that can be detected?
Yeah- from the many white papers I read, they quoted around 10, but in the patents, they mentioned closer to 20 (citations are in the episode notes). That goes to show the difference between mass production applications and lab results. I didn't get into the software utilization of 10 distinct touches, but I bet software writers have a hard time using more than 4 points effectively and consistently.
2:18 How is the change in positive charge measured?
Since a change in charge causes a change in voltage and voltage can be converted into a digital signal through an ADC, we can measure the change in voltage of each row.
His point was that theoretically it's best if we can measure each individual square, but since that would be very difficult and cumbersome to do, we instead measure the entire row. Doing this causes the problem that we cannot tell which square have what voltage, all we know is the total voltage. Therefore, the "scanning" is done such that only one column in each row can be activated at a time.
Nice, do one on how and why brain waves activated by hormones can actually affect external reality including larger scale constructs such as pheromones which may alter variables in the general experience pool.
Sorry, I don't know much or anything about this.
@@BranchEducation I guess do one on E.E.G. technology and nervous system controled tech then? that's a beginning. I appreciate these a lot.
Do more videos broo......
working on it.
How to measure the integrated columns and how to scanning happen
Here there are 40 columns so the electric feild is made to make iteration through the columns per 10micro/milliseconds.
As such the electric field is varied. And scanning is done on the row side which is active only when the electric field is passing by the section.
If the electric field is projected above the glass then why doesn't the touch work when I put my finger really close without touching? But touch still works on top of another protective glass layer
I don't specifically know.
For something at the Size of a table, could you make a System out of multiple Touchscreens, so you can have the Delay of let's say a Tablet, but still the Size of a Table?
please do one on stylus pens!