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Technology Stocks : Qualcomm Incorporated (QCOM) -- Ignore unavailable to you. Want to Upgrade?

To: Harvey Rosenkrantz who wrote (18432)	11/17/1998 5:57:00 PM
From: Dave	Read Replies (1) \| Respond to of 152472

Harvey: They may not be using cdma for this application. "The CineComm Digital Cinema system will use QUALCOMM's patented compression algorithm and data management network to uplink encrypted motion pictures through satellites with worldwide coverage for downloading to theaters equipped with QUALCOMM's theater management system and HJT projectors." There are many compression algorithms available, my guess is that they are using some sort of Quantization table. For example, when a signal is input into a system, it is extremely inefficient to transmit the signal as is. In order to reduce the bandwidth, one would put a codebook on the sending side and on the receiving side of the system. Next, the system would break down the signal into small parts and determine an indicie which best fits. Then the indicie is transmitted instead of the signal. dave