Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [ntsc]

The US standard for television broadcast, before HDTV (ATSC) came out.

49 questions
8
votes
4 answers

Why do most FPV 5.8 GHz video transmitters use PAL or NTSC?

I am not much into the details of video transmission in general. However, I wonder since most displays and electronics are digital, why have suppliers for FPV equipment chosen an analog transmission system, which moreover is limited to 30/24 fps and…
user52836
8
votes
3 answers

Is the design decision for different frequencies in PAL and NTSC related to the AC mains power frequency?

In discussion a friend mentioned: In the original implementation of PAL and NTSC they used the AC current as a means providing the frequency for the TV. As the different mains had different frequencies, they designed the TV standard to have…
hawkeye
  • 627
  • 1
  • 5
  • 13
6
votes
1 answer

RGBHV (VGA) to YPbPr Converter and Waveforms?

Purely for hobby, I am working on an RGBHV (VGA) to YPbPr (Component) converter circuit for old games consoles modified to output RGBHV on a VGA cable. From the game consoles, the RGB signal is taken from before the composite encoder chip and the…
Lt.Derpington
  • 61
  • 1
  • 3
6
votes
1 answer

Lack of color displaying composite video

I'm attempting to output video from a TMS9118 VDP to a television's composite video port. Right now the result I'm getting is grey scale (whereas the background should be green), and I have no idea why. I have compared the output from the TMS9118…
Adam T.
  • 73
  • 5
5
votes
3 answers

Separating the AM and QAM components in PAL signal demodulation

I'm attempting to emulate the modulation and demodulation of a PAL video frame in software, but I'm having trouble understanding how the AM (luma) and QAM (UV) components of the signal are separated during the demodulation process. Background: The…
Polynomial
  • 10,562
  • 5
  • 47
  • 88
5
votes
1 answer

Can the DS1052E be used for reliable NTSC measurement?

I'm in the market for an oscilloscope. I've read that the infamous DS1052E from Rigol is a great beginner scope due to the price/performance. However, I know I have a lot to learn and simply don't know if it's the scope I need. My intentions…
cbmeeks
  • 1,190
  • 2
  • 13
  • 27
4
votes
1 answer

Matching a transformer to one in a video balun - Vertical sync is off

I building an interconnect board which will hold one side of the video balun pair (plus power and rs485). The other side will be a commercially available video balun which connects to the camera. Right now I am having trouble matching the two…
michael
  • 251
  • 1
  • 8
3
votes
2 answers

Image processing on PAL/NTSC

I want to process a PAL or NTSC video signal and pick up colors, like green, orange, blue and red. Is there any way to decode RGB from NTSC/PAL easily, and then detect these colours? I'm looking for a small and cheap solution. The end goal is to…
Thomas O
  • 31,546
  • 57
  • 182
  • 320
3
votes
2 answers

TVOUT using NTSC in Arduino Leonardo

I'm trying to use Arduino Leonardo with TVOUT library (the only one that I found to do NTSC modulation). The problem is that I can't even run the example, I searched in serveral forums without a concrete solution, here is the…
jepser
  • 151
  • 4
3
votes
3 answers

How to interpret this NTSC color waveform?

How can the following NTSC video signal be interpreted? Is it using phases or frequencies or amplitudes? Is this above only the color information of a video broadcast signal? I have no background on this type of communication. Is H-BLANKING…
user16307
  • 11,802
  • 51
  • 173
  • 312
3
votes
1 answer

RC PWM video switch

I'm currently working on a quadcopter that I'm equipping with several video cameras of various sizes/quality (i.e. one high quality, forward facing camera, then three or four cheap micro cameras arrayed all over the quad). My problem is this -…
Chris
  • 617
  • 9
  • 15
3
votes
1 answer

Rainbow artifacts in composite video

Background: I am trying to reverse engineer a small endoscopic camera for a class project. The camera is connected to its own screen, and I do not have the specs for either. Thus far I have learned that the signal that it provides is a composite…
Krastanov
  • 207
  • 1
  • 9
3
votes
2 answers

How to generate a composite video

I am working on a project that will output either NTSC or PAL video. The video is mainly text (color and Hebrew text) on top of a background image (that I need to download to the microcontroller). The board has a UART input and a PAL/NTSC output and…
user43161
  • 51
  • 1
  • 3
2
votes
2 answers

How do phase errors appear in the NTSC color subcarrier?

So, NTSC uses a YIQ color space, with the I and Q channels encoded in a color subcarrier using QAM with the carrier suppressed. NTSC had a reputation for poor color reproduction—“Never Twice the Same Color”—and when I look up articles that explain…
Dietrich Epp
  • 125
  • 8
2
votes
1 answer

Multiply a frequency by 227.5 times? The quest to get to 3.57954MHz

I need to somehow multiply a 15734.26Hz signal by 227.5 times. Those with a keen eye (or a calculator) will notice the result is very close to NTSC subcarrier frequencies. 3.579545MHz or close as damn it. I realise I could just use a crystal that's…
Joel Whybrow
  • 21
  • 2
1
2 3 4