Image data output controller using double buffering
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United States of America Patent
Stats
-
Apr 26, 2005
Grant Date -
May 22, 2003
app pub date -
Oct 23, 2002
filing date -
Nov 19, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image data output control apparatus for enhancing a screen update speed to naturally update a screen is provided. The image data output control apparatus comprises first and second memories each for buffering image data of one screen, a host processor for selecting the first and second memories alternately as a display buffer for output of image data of a current screen and a screen buffer for storage of image data of a subsequent new screen, writing the image data of the subsequent screen into the screen buffer to construct the subsequent screen, and outputting the image data of the current screen stored in the display buffer. An output terminal outputs image data from any one of the first and second memories as image data for a screen to be displayed through a display unit.
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