MPEG decoder system and method having a unified memory for transport decode and system controller functions

CAFC
  • US 5,870,087 A
  • Filed: 11/13/1996
  • Issued: 02/09/1999
  • Est. Priority Date: 11/13/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. An MPEG decoder system which includes a single memory for use by transport, decode and system controller functions, comprising:

  • a channel receiver for receiving and MPEG encoded stream;

    transport logic coupled to the channel receiver which demultiplexes one or more multimedia data streams from the encoded stream;

    a system controller coupled to the transport logic which controls operations within the MPEG decoder system;

    an MPEG decoder coupled to receive one or more multimedia data streams output from the transport logic, wherein the MPEG decoder operates to perform MPEG decoding on the multimedia data streams; and

    a memory coupled to the MPEG decoder, wherein the memory is used by the MPEG decoder during MPEG decoding operations, wherein the memory stores code and data useable by the system controller which enables the system controller to perform control functions within the MPEG decoder system, wherein the memory is used by the transport logic for demultiplexing operations;

    wherein the MPEG decoder is operable to access the memory during MPEG decoding operations;

    wherein the transport logic is operable to access the memory to store and retrieve data during demultiplexing operations; and

    wherein the system controller is operable to access the memory to retrieve code and data during system control functions.

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