Invention Grant
- Patent Title: Method and apparatus to accelerate scrolling for buffered windows
- Patent Title (中): 用于加速缓冲窗口滚动的方法和装置
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Application No.: US11998536Application Date: 2007-11-29
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Publication No.: US07802196B2Publication Date: 2010-09-21
- Inventor: Ralph T. Brunner , Haroon Sheikh , Peter Graffagnino
- Applicant: Ralph T. Brunner , Haroon Sheikh , Peter Graffagnino
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: G06F3/048
- IPC: G06F3/048 ; G06F3/00

Abstract:
Methods and apparatuses to accelerate scrolling for buffered windows. In one aspect of the invention, a method to scroll a buffered window on a data processing system includes: determining a second region of a second pixel image of a window in a frame buffer, which corresponds to a first region of a first pixel image of the window buffered in a window buffer that is scrolled from a first position to a second position in the first pixel image of the window in the window buffer; and scrolling the second region in the frame buffer to synchronize the second pixel image in the frame buffer with the first pixel image in the window buffer. In one example according to this aspect, the second region in the frame buffer is scrolled using graphics hardware; the frame buffer is located inside a video memory under control of the graphics hardware.
Public/Granted literature
- US20080134079A1 Method and apparatus to accelerate scrolling for buffered windows Public/Granted day:2008-06-05
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