Questions tagged [pixels]
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29 questions
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How is it possible to change RGB color filter panel to BGR color filter panel if the color filter is physically firmly mounted on the LCD display?
How is it possible to change RGB color filter panel to BGR color filter panel if the color filter is physically firmly mounted on the LCD display?
TFT display design.
Are RGB colors created only by ...
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How/where can we use/have camera modules similar to those of smart phones [closed]
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 ...
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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 ...
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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 ...
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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 ...
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How are the pixel charges relate to two analog voltages for this CCD camera?
A CCD pixel area is represented as in the figure below:
And somehow in a CCD camera like this one each pixel converts the light upon it to charge. There are 1024 pixel elements in one of the model.
...
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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 ...
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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 ...
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Minimum Detectable Signal of Camera and Improvements to Minimum Detectable Signal through pulsing
My goal is to determine for specific signal measSig, what is the largest background signal backSig I could receive and still be able to detect my measurement Signal? I know that camera modules ...
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Floating node in 4T CMOS camera pixel
I know how a 3 Transistor CMOS camera pixel works. As I understand, 4T CMOS pixels have one additional transistor that connects the photodiode to a so-called floating node.
What is that floating node ...
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Why 3T APS pixel implements a NMOS reset transistor instead of a PMOS?
I'm very curious about why the 3T APS píxel sensor implements an NMOS reset transistor.
As it is well-known, we will have a voltage of Vdd-Vth during the reset phase. This situation will imply higher ...
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What could cause a sub-pixel defect that is only visible under certain conditions? [closed]
An interesting but annoying pixel fault has appeared on the display of my laptop. At first glance it looked like a Stuck Pixel defect (one or two red, one blue and one green sub-pixel) but then I ...
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Is the gauge big enough? String Pixel
I think I might need different pixels or an additional power supply.
I bought 10 strings of 50 (12mm, 12v) pixels (aka WS2811 12mm 12V LED) to do my first matrix project. It says that is uses 22awg ...
- 103
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Pass bandwidth of backing light for LCD display
A stardard industry LCD display is composed of several parts. Polarizer film and color filters produce and image by masking the light from a source positioned behind the LCD itself, the so called ...
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How to convert pixel map to voltage/angles?
My end goal is trying to get something rendered using lasers and a MEMS scanning mirror. There are not that many resources online for this, but it seems like the basic idea is pretty applicable to ...
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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 ...
- 3,590
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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 ...
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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 ...
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LCD screen: can this problem be caused by the inverter?
I'm repairing a HP 530 laptop with bad screen image. The image does not flicker, the corruption pattern is static.
If I connect an external monitor through the VGA port the image is fine, therefore I ...
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635
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WS2815 Erratic Color display
I have a two strips of WS2815 neopixel LED lights (400 pixels per string) being driven by WeMos D1 minis with the WLED library to control them.
Since the two strips are on opposite sides of my porch, ...
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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 ...
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How to drive up to millions of ws2812 or APA104 LEDs? [closed]
I've driven more than 2k of APA102 from a computer using a USB to SPI interface for an interactive project.
Since then I've been curious how I could made the same setup for even a large pixel area, up ...
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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?
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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? ...
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EMWIN Keil LCD display shows half the screen completely!
I have written one project in Keil for STM32F103RE && ILI9325 2.8" TFT LCD,
So my problem is this, the GUI_SetBkColor(GUI_BLUE); Function only fill only ...
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255
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Where can I get a display screen with 30 Hz or less refresh rate? [closed]
I am experimenting with a camera recording a display screen.
Based on what I have read - camera recording a screen will have flicker if the refresh rate and frame rates are not synced.
My mobile ...
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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 ...
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Why there is difference between image size and video resolution of a specific camera? [closed]
I was searching to buy a camera, but I saw in specs they wrote:
2MP(full hd) video recording
5MP image size
Why the vido size is 2MP but image size is 5MP? How ...
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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 ...
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