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Video and graphics system with a single-port RAM

  • US 7,365,752 B2
  • Filed: 07/29/2004
  • Issued: 04/29/2008
  • Est. Priority Date: 11/09/1998
  • Status: Expired due to Fees
First Claim
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1. A graphics system comprising:

  • a display engine for receiving and processing graphics data to generate a graphics image;

    a graphics filter for converting a format of the graphics image from a first format to a second format when the graphics system operates in a standard definition (SD) mode, but not in a high definition (HD) mode; and

    a plurality of line buffers implemented in a single-port RAM, each said line buffer for temporarily storing a line of the graphics image, the line buffers being accessed in an interleaved manner, such that a read operation is performed between a first write operation and a second write operation, wherein the write operations are performed on one said line buffer being pointed to by a pointer when multiple said line buffers are used, and wherein the first and second write operations are performed using two sequential memory locations of the line buffers.

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