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Electronic system and method for display using a decoder and arbiter to selectively allow access to a shared memory

DC
  • US 7,542,045 B2
  • Filed: 12/13/2007
  • Issued: 06/02/2009
  • Est. Priority Date: 08/26/1996
  • Status: Expired due to Fees
First Claim
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1. An electronic system comprising:

  • a bus coupleable to a main memory having stored therein data corresponding to video images to be decoded and also decoded data corresponding to video images that have previously been decoded;

    a video decoder coupled to the bus for receiving encoded video images and for outputting data for displaying the decoded video images on a display device, the decoder configured to receive data from the main memory corresponding to at least one previously decoded video image and to a current video image to be decoded and outputting decoded data corresponding to a current video image to be displayed, the current video image to be displayed adapted to be stored in the main memory;

    a microprocessor system configured to be coupled to the main memory, the microprocessor system for storing non-image data in and retrieving non-image data from the main memory; and

    an arbiter circuit coupled to both the microprocessor system and the video decoder for controlling the access to said main memory by the video decoder and the microprocessor.

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