Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [pixels]

29 questions
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How do LCD screens repair themselves?

Hey, electronics people: A few months ago, I cleaned a spot on an LCD flat screen. Whatever it was, it was stuck on there pretty good and I guess I pushed down on it too hard (actually wasn't hard at all, to be honest). Anyway, next time I turned it…
voices
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Charge transfer in CCD

I have a basic doubt about charge transfer between pixels of a CCD. Let's consider this animation (picture taken from wikipedia): A precise time sequence of applied voltages between gates and bulk allows to move the charge between a pixel…
Kinka-Byo
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Which color puts the least "strain" on an LCD pixel to avoid burn-in/ghosting?

I am developing a user interface on a cheap Kinco color LCD HMI unit. After leaving a test UI on the screen for about 3 days, there was a very decided "ghosting" effect. I was able to eliminate the ghost outlines by alternating a solid black and…
Ryan Griggs
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TFT RGB LCD construction and

I am trying to understand the construction of an RGB TFT LCD that has brightness control in it. I could not understand how does the TFT color LCD pixels glow? Does each of the pixel has its own light that it emits just like an LED or is it that…
alt-rose
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How/where can we use/have camera modules similar to those of smart phones

Many laboratory or embedded systems projects can leverage cameras similar to those of smartphones because of their size and geometry in general. But the problem is we cannot just take out the camera parts from smart phones and put it in our setup…
Alejandro
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I am trying to design a basic CMOS Image sensor

I am new to electronics so I might be doing some bad mistakes on my design but anyways, I'm trying to build a CMOS Image sensor using Proteus, and I couldn't find some basic tutorial to follow, Yet I tried to do this circuit and it gives me…
mostafa aamir
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Why is quantization defined in powers of integer multiples of two in digital image processing?

I have been studying quantization in the context of digital image processing. I referred to the 4th edition of the book titled Digital Image Processing by Rafael C. Gonzalez and Richard E. Woods. In the book, the intensity quantization levels are…
Anubhav
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What is the purpose of non-black dummy pixels in a linear CCD?

I'm studying the datasheet of Sony ILX511 linear CCD (PDF). On the Clock Timing Diagram, first 32 or 33 (depending on the mode) clock cycles give out dummy pixels, and only 18 of them are Optical black, which, as I understand, means they are covered…
Ruslan
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What are these mobile pixels?

I've got this picture under my microscope for an old Samsung Galaxy Ace mobile phone, I'd like to know what are the different pixels in the rows with a separation in the subpixels? And how are they different from the regular ones in the adjacent…
faressalem
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SK6812, what happens if a pixel fails?

I plan to use SK6812 RGBW LEDs for my projects. There was a question of reliability. What happens if one of the pixels fails? Will the signal go further? If not, which way to look?
Delta
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Camera pixel size limit reached?

Just read here that Samsung has produced a camera sensor with a pixel size of 0.8 micron ie 800nm. Is it possible, or useful, for the pixel size to go below the wavelength of the light being imaged? For example, would 350nm size pixels be of any use…
Dirk Bruere
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Pixeldriver P9813 with HP LED driver AL8860WT - transistor/Mosfet needed?

Refering to my previous question, I want to drive a bunch of High power LED drivers (Datashsheet AL8860WT-7) With a Pixel-IC (Datashsheet P9813). This is my concept: My project so far: connecting the R, G or B Pin of the Pixel-IC directly to the…
kokospalme
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Why color filter mosaic is still fixed for each camera model?

Color filter mosaic (color filter array) is fixed pieces of material that change input ray into another one and built over each pixel of camera matrix. Why it is still fixed? Is it possible to build filter with changing colors? Something like…
Moorhuhn
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Pixel shift: SPI display cause?

Does anyone know why my image is shifted by one pixel at this exact coordinate here every time? I am receiving the data over serial USB and writing it to the display controller RAM over the SPI interface. My current code base is here although I…
StonedEdge
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How to improve output swing of an NMOS pixel circuit?

This is a standard pixel circuit: It works just like one would expect. When the reset signal on the gate of the PMOS is low it is conducting and charges the capacitor to 5V, then when the signal turns high it stops conducting and the capacitor is…
Ching Chung
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