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Display system with programmable display parameters

  • US 6,166,728 A
  • Filed: 06/07/1993
  • Issued: 12/26/2000
  • Est. Priority Date: 12/02/1992
  • Status: Expired due to Term
First Claim
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1. A display system for generating a first video signal, said display system being a subsystem of a subscriber terminal of a cable television system, said display system comprising:

  • a data extractor for receiving an input command transmitted by a remote transmitter, said remote transmitter being a subsystem of a headend of the cable television system and said input command including a header portion, a command portion and a display data portion, wherein said header portion indicates whether said input command is global in nature and therefore should be received by all subscribers or is addressed in nature and therefore should be received by particular subscribers, and said command portion defines an operation that said display system will perform using said display data portion;

    a dynamic, non-volatile memory;

    a control processor, said control processor including first program means for modifying at least one of symbol data and graphics data stored in said dynamic, non-volatile memory according to said input command;

    a control processor for converting at least one of said symbol data and graphics data to pixel data, said control processor further including second program means for configuring said digital processor; and

    a video processor, responsive to said digital processor, for converting said pixel data to an analog pixel signal and for generating said first video signal by multiplexing between said analog pixel signal and a second video signal.

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