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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: JGoren who wrote (58753)	1/24/2007 9:10:00 AM
From: waitwatchwander	Read Replies (2) \| Respond to of 197239

---> For one of the processes, known as transform, he [Ramchandran] listed four differences that he said were fundamentally different than the transform used in the H.264 standard. The following is the applicable text from Richardson's book ... ------------------------------------- The H.264 transform [3] is based on the DCT but with some fundamental differences: 1. It is an integer transform (all operations can be carried out using integer arithmetic, without loss of decoding accuracy). 2. It is possible to ensure zero mismatch between encoder and decoder inverse transforms (using integer arithmetic). 3. The core part of the transform can be implemented using only additions and shifts. 4. A scaling multiplication (part of transformation) is integrated into the quantiser, reducing the total number of multiplications. -------------------------------------- As noted by [3] above, Richardson footnoted the following paper. tinyurl.com The authors of this paper. Hallapuro, tinyurl.com Karczewicz, tinyurl.com Malvar, tinyurl.com Kerofsky, tinyurl.com (MS/NOK Way)