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Hardware JPEG compression

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Chris P

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Does anyone have any experience with harware data compression.
I have a PAL signal that i need to sample (roughly once every 2 seconds) and convert to a compressed image.
1.) Is JPEG the easiest format for me to use?
2.) Can I buy a chip "Off the Shelf" that will do this? If so what and where?

This needs to be done remotely so i cant use a PC...
Any help would be most helpful as I'm reasonably new to this area.

Thanks for help with my previous posts by the way, solved one of my problems! :D

Cheers in advance Chris.
 
Hardware JPEG

Chips that did baseline JPEG in hardware were reasonably popular during the early 90's. I did several designs back then based on the C-Cubed CL550, the Zoran 36020/40, and the LS647xx series from LSI. The advantage of using dedicated hardware was speed, they were at least an order of magnitude faster than DSP-based solutions at the time. I doubt that any of these chips are still available or supported, but here's a link to a few more dedicated JPEG chips (DCT processors & back end encoders) if you want to try tracking them down:

http://www.faqs.org/faqs/compression-faq/part3/

Very few of these were all in one JPEG chips (CL550 and ZR36040 being the exceptions). Most came as chipsets, with a DCT codec and a separate back end for zig-zag/quantization & huffman coding. Most chipsets also had an optional front end chip for doing color space conversions.

If you have a second or more for processing, consider using a DSP-based solution, it's much more flexible and can be updated easily :wink:. Well, easier (ex; going from DCT to wavelet compression). Highly optimized baseline JPEG code exists for a number of DSPs, especially those from TI.
 
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