Video and graphics system with a single-port RAM
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United States of America Patent
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Apr 29, 2008
Grant Date -
Feb 3, 2005
app pub date -
Jul 29, 2004
filing date -
Nov 9, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A video and graphics system has an input for receiving compressed video data and an input for receiving graphics data. The compressed video data may include HDTV video and/or SDTV video, and may be included in compressed data streams such as an MPEG-2 Transport stream. The video and graphics system also includes a video decoder for processing the compressed video data to generate a video for displaying, a display engine for processing the graphics data to generate graphics for displaying, and an overlaying system for compositing the video and the graphics to generate an output video. The display engine includes a memory used during conversion of a graphics format from a first format to a second format to be in a format compatible with a video format The memory may be implemented in a single-port SRAM configured to simulate a dual-port SRAM. The system may be integrated on an integrated circuit chip.
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