Long time efforts have paid off and we were able to create a 2D game console for NTSC TV!! The features and specifications of the console are as follows.
Showing posts with label Game console. Show all posts
Showing posts with label Game console. Show all posts
Monday, April 18, 2011
Easier method of color generation for NTSC Television
Please read this and this (optional) for better understanding before you read this post.
Few popular methods used to generate different colors for NTSC are
1. using AD725 IC for RGB values to NTSC color conversion
2. using a standard 3.579545MHz as the color carrier and producing different delays to get different phase and in-turn different colors in NTSC. This can be done by using a number of buffers to create delays and selecting the required color among these delayed signals by the use of a multiplexer.
Few popular methods used to generate different colors for NTSC are
1. using AD725 IC for RGB values to NTSC color conversion
2. using a standard 3.579545MHz as the color carrier and producing different delays to get different phase and in-turn different colors in NTSC. This can be done by using a number of buffers to create delays and selecting the required color among these delayed signals by the use of a multiplexer.
Monday, January 17, 2011
Why is NTSC color carrier frequency 3.57954545 MHz and not some other number that can be remembered easily?
Hello guys. I am back after a long break. Now I will continue to tell a little more about NTSC before I start writing blogs on the actual Game Console implementation on LPC1768. I would suggest you to read the previous post before reading this one for better understanding.
I mentioned that the NTSC color carrier frequency is 3.57954545 MHz. If I want to create a game console for NTSC TV then I need to generate this frequency and use it as the color carrier. But why is 3.57954545 MHz chosen as the carrier and not some other frequency which can be easily remembered or generated?
I mentioned that the NTSC color carrier frequency is 3.57954545 MHz. If I want to create a game console for NTSC TV then I need to generate this frequency and use it as the color carrier. But why is 3.57954545 MHz chosen as the carrier and not some other frequency which can be easily remembered or generated?
Friday, November 19, 2010
Understanding the basic requirements to display video on a CRT TV
The basic thing that attracted me towards ARM was the idea of creating a Game Console for NTSC TV. I previously made a game console for VGA monitor using AVR. But now the desire to make it better, to get greater resolution video, good quality audio and also huge number of sprite support made me start working with ARM. The basic reason for choosing LPC1768 over hundreds of microcontrollers available in the market was that this controller seems appropriate for video graphics generation purpose. The basic architecture of it is such that it makes our job simple.
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