Questions tagged [ntsc]

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

0
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4answers
60 views

AC-Coupling on Composite video

Many sources say that composite video input should be AC-coupled. Voltage levels for blank, black and white signal are also specified. How is it possible to detect these voltage levels after AC ...
0
votes
3answers
170 views

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 ...
7
votes
4answers
2k views

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 ...
1
vote
0answers
251 views

SD card both photo/video recording and data logging [closed]

How can I capture photos and videos (JPEG and MPEG4 respectively) taken from an NTSC camera to an SD card and also log text data to it? I am working on a project in which I need to log analog data ...
0
votes
4answers
380 views

Can I use a 12MHz for NTSC video generation

I want to use a shift-register to generate video signal directly from SRAM. And researching I found that the pixel rate of NTSC is 12.272MHz and I can't find any crystal closer to that speed than ...
1
vote
2answers
162 views

Horizontal overscan on NTSC

How much horizontal overscan is there on a typical NTSC CRT television set? Vertical overscan, there are nominally 240 scan lines per field, of which you can reasonably count on having slightly more ...
-1
votes
1answer
438 views

IP Camera IC (PAL to Ethernet)

I have a design problem to capture CCIR/PAL video from the camera that is available and send it over ethernet. Need to come up with my own printed circuit board design, having no prior experience in ...
2
votes
1answer
157 views

Raspberry PI composite color video resolution puzzle

I have a rather theoretical question. I connected my Raspberry Pi to my Composite NTSC TV and observed that the terminal video output has 640 pixels horizontal resolution with nice solid clear colors ...
0
votes
2answers
116 views

How is NTSC analog video written to a Video8 tape, or analog tape in general for that matter?

I am trying to recover some videos on a Video8 tape and was wondering how in general how analog video was written to tapes. I've been researching the NTSC specification and it seems like there are ...
3
votes
1answer
436 views

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 ...
1
vote
1answer
167 views

What amount of noise on Vcc is acceptable?

I have added a .1uF decoupling capacitor between Vcc and GND on a TMS9118 (this is an old video display processor). When I measure the voltage at Vcc with my oscilloscope, I read a pk - pk of 1V. Is ...
6
votes
1answer
243 views

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 ...
1
vote
1answer
89 views

How to fix a frequency shifted audio part of an RF signal?

I tried to connect an old Japanese (NTSC, System M) video gaming system (an original Famicom, HVC-001) to a rather modern multisystem LCD TV-set (Sharp LC-43CFE5222E). The TV tuner is capable of ...
7
votes
3answers
1k views

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 ...
0
votes
1answer
2k views

Video Standard White Levels, RS-170 or RS-343

I have a customer defining some equipment which outputs analogue video. They have said it would be to NTSC RS-170A standard Y C (on a S-Video, Mini Din connector), however I'm not sure if they really ...
3
votes
3answers
779 views

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 ...
1
vote
1answer
227 views

Phase in NTSC and TMS9918

In the YIQ space (I am referring to this wikipedia's article) colors with phases near 0 are close to red. In the TMS9918 datasheet's table, however, in the expression of colors as A' and phase, blue ...
3
votes
2answers
2k views

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). ...
5
votes
1answer
569 views

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 ...
4
votes
1answer
5k views

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 ...
3
votes
2answers
1k views

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 ...
-2
votes
1answer
3k views

HDMI/VGA/NTSC/PAL to 24-bit parallel RGB interface [closed]

Adafruit.com is selling TFT-LCD modules that comes with an NTSC/PAL driver board. The product specification page includes a link to the original manufacturer´s datasheet/specifications for the TFT ...
1
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2answers
1k views

Video Composite signals

What are the considerations for PCB layout, and connector selection for video signals. Is it necessary to follow 75ohm impedance criteria in a closed system. The pipeline starts at Sony FCB IX 11 A ...
3
votes
1answer
424 views

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 ...
2
votes
3answers
5k views

Processing NTSC video feed for SPI display

I have recently started a project where I want to use this small camera and and have it relay the live video to a very small color LCD, like this one through an Arduino. Unfortunately the camera has ...
4
votes
1answer
1k views

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. ...
1
vote
0answers
2k views

NTSC -> ADC -> USB. A video digitzer circuit

I'm working on a project that ultimately needs to incorporate an analog video camera input, digitizing it and spitting it out a USB port as an MPEG stream. My general aim is for roughly a VGA ...
3
votes
2answers
1k views

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 ...
0
votes
2answers
275 views

Transmitting NTSC over digital link

I'm interested in capturing analog video in NTSC and transmitting it as efficiently as possible over a digital link, preferably while maintaining as much fidelity to the original signal as possible. ...
1
vote
1answer
316 views

slick way of muxing power+NTSC video over RG59/RG136?

I've got a few NTSC security cameras I'd like to set up around the perimeter of the house. They output standard NTSC video and require 12V for power. I was hoping to power them and take video off the ...
2
votes
3answers
765 views

How to determine if TV is on by looking at yellow RCA monitor signal?

I have a U.S./NTSC LCD HDTV that has a yellow RCA monitor jack on the back. Would it be possible to monitor this connector on an analog input of a microcontroller to determine when the TV is on or ...