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Technology Stocks : C-Cube
CUBE 35.91+0.9%3:05 PM EST
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To: DiViT who wrote (25334)11/16/1997 11:18:00 PM
From: William T. Katz  Read Replies (2) of 50808
 
Byte article on CUBE's DVx:

Sorry David. I had planned on posting to this board as well as that blurb on Innovacom, but you are too quick :) How much is a DVx chip anyway? Sorry CUBEites if the info below has already been discussed. I've rejoined the CUBE shareholders just recently and have only read the last 50 or so messages.

Here is an interesting part of the article that describes the scalability of the encoding chip (DVx):

"To encode high-resolution formats such as HDTV, multiple DVx processors can operate in parallel to divvy up the processing task. Previously, video-processing chips were interconnected by a globally shared bus. However, as the number of chips increases on the shared bus, it reaches the limit of the bus's bandwidth. This prevents further scaling of performance.

Instead, the DVx uses a point-to-point architecture that scales directly with the number of chips. The DVx chip's inter-process communications (IPC) channels can be interconnected to build multi-processor arrays, as shown in the figure above [fig shows point-to-point communications method using master/multiple-slave]. Through the IPC ports, multiple DVx chips coordinate processing operations so as to encode all proposed digital HDTV formats. Two DVx chips can encode the 525P format, and eight to 10 chips are necessary to encode an HDTV 1080I format. (It takes only two DVx chips to decode all HDTV video formats.)"
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