US7313764B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus to accelerate scrolling for buffered windows
Assignee: Apple Inc
•
Filing: 2003-03-06
•
Granted: 2007-12-25
•
Expires: 2023-03-06
Abstract
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.
Inventors
- 👤 Ralph T. Brunner
- 👤 Haroon Sheikh
- 👤 Peter Graffagnino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/34; G06; G06F; G06F3/00; G06F3/01; G06F3/048; G06F3/0484; G06F3/0485
Claims Analysis
Total Claims: 90
Claim 1
Independent Claim
59 words
A data processing system to scroll a buffered window, the data processing system comprising: means for identifying a scrollable region that can be scrolled in a frame buffer to synchronize the frame buffer with a window buffer for a window; means for determining geometries of the scrollable region; and means for instructing graphics hardware to scroll the scrollable region.
Claim 2
Dependent Claim
59 words
A data processing system to scroll a buffered window, the data processing system comprising: means for identifying a scrollable region that can be scrolled in a frame buffer to synchronize the frame buffer with a window buffer for a window; means for determining geometries of the scrollable region; and means for instructing graphics hardware to scroll the scrollable region.
Claim 3
Dependent Claim
24 words
A data processing system as in claim 1 wherein the frame buffer is located inside a video memory under control of the graphics hardware.
Claim 4
Dependent Claim
32 words
A data processing system as in claim 1 further comprising: means for updating a location of a dirty region in the window buffer after a region in the window buffer is scrolled.
Claim 5
Dependent Claim
63 words
A data processing system as in claim 1 wherein the scrollable region is identified according to: a) a first geometry of the window as displayed in the frame buffer where the window in the frame buffer is previously updated; and b) a second geometry of the window as displayed in the frame buffer when the window in the frame buffer is currently updated.
Claim 6
Dependent Claim
28 words
A data processing system as in claim 4 wherein the scrollable region is within the first geometry before being scrolled and within the second geometry after being scrolled.
Claim 7
Dependent Claim
58 words
A data processing system as in claim 4 further comprising: means for identifying a non-scrollable region that is scrolled in a window buffer and that cannot be scrolled in the frame buffer to synchronize the frame buffer with the window buffer; and means for copying data for the non-scrollable region from the window buffer to the frame buffer.
Claim 8
Independent Claim
169 words
A method to scroll a buffered window on a data processing system, the method comprising: determining geometries for a plurality of regions in a frame buffer including a second region and a fourth region of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image, the second pixel image being displayed on a screen, the geometries including shapes of the plurality of regions; copying first data for the third region in the window buffer to the frame buffer to update the fourth region of the second pixel image; and scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image.
Claim 9
Independent Claim
169 words
A method to scroll a buffered window on a data processing system, the method comprising: determining geometries for a plurality of regions in a frame buffer including a second region and a fourth region of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image, the second pixel image being displayed on a screen, the geometries including shapes of the plurality of regions; copying first data for the third region in the window buffer to the frame buffer to update the fourth region of the second pixel image; and scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image.
Claim 10
Dependent Claim
64 words
A method as in claim 7 further comprising: determining a first location of the third region of the first pixel image relative to the first pixel image after the first region is scrolled, the third region being updated in the window buffer before the first region is scrolled, the first data for the third region corresponding to the first location in the window buffer.
Claim 11
Dependent Claim
18 words
A method as in claim 8 wherein the first data is copied after the second region is scrolled.
Claim 12
Dependent Claim
28 words
A method as in claim 8 wherein the first data is copied before the second region is scrolled; and wherein the fourth region is within the second region.
Claim 13
Dependent Claim
15 words
A method as in claim 7 wherein the second region is scrolled using graphics hardware.
Claim 14
Dependent Claim
22 words
A method as in claim 11 wherein the frame buffer is located inside a video memory under control of the graphics hardware.
Claim 15
Dependent Claim
39 words
A method as in claim 7 wherein before being scrolled the second region is within a first geometry of the window as displayed in the frame buffer where the frame buffer is previously updated according to the window buffer.
Claim 16
Dependent Claim
39 words
A method as in claim 13 wherein after being scrolled the second region is within a second geometry of the window as displayed in the frame buffer when the frame buffer is currently updated according to the window buffer.
Claim 17
Dependent Claim
78 words
A method as in claim 14 further comprising: determining a fifth region in the first pixel image, the fifth region scrolled with the first region in the window buffer, before being scrolled the fifth region corresponding to a sixth region within the second pixel image of the second geometry, the sixth region being outside the first geometry; and copying second data for the fifth region from the window buffer to the frame buffer to update the sixth region.
Claim 18
Dependent Claim
20 words
A method as in claim 14 wherein when scrolled a portion of the second region is outside the first geometry.
Claim 19
Dependent Claim
187 words
A machine readable storage medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to scroll a buffered window on the data processing system, the method comprising: determining geometries for a plurality of regions in a frame buffer including a second region and a fourth region of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image, the second pixel image being displayed on a screen, the geometries including shapes of the plurality of regions; copying first data for the third region from the window buffer to the frame buffer to update the sixth region; and scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image.
Claim 20
Dependent Claim
187 words
A machine readable storage medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to scroll a buffered window on the data processing system, the method comprising: determining geometries for a plurality of regions in a frame buffer including a second region and a fourth region of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image, the second pixel image being displayed on a screen, the geometries including shapes of the plurality of regions; copying first data for the third region from the window buffer to the frame buffer to update the sixth region; and scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image.
Claim 21
Dependent Claim
67 words
A medium as in claim 17 wherein the method further comprises: determining a first location of the third region of the first pixel image relative to the first pixel image after the first region is scrolled, the third region being updated in the window buffer before the first region is scrolled, the first data for the third region corresponding to the first location in the window buffer.
Claim 22
Dependent Claim
18 words
A medium as in claim 18 wherein the first data is copied after the second region is scrolled.
Claim 23
Dependent Claim
28 words
A medium as in claim 18 wherein the first data is copied before the second region is scrolled; and wherein the fourth region is within the second region.
Claim 24
Dependent Claim
15 words
A medium as in claim 17 wherein the second region is scrolled using graphics hardware.
Claim 25
Dependent Claim
22 words
A medium as in claim 21 wherein the frame buffer is located inside a video memory under control of the graphics hardware.
Claim 26
Dependent Claim
39 words
A medium as in claim 17 wherein before being scrolled the second region is within a first geometry of the window as displayed in the frame buffer where the frame buffer is previously updated according to the window buffer.
Claim 27
Dependent Claim
39 words
A medium as in claim 23 wherein after being scrolled the second region is within a second geometry of the window as displayed in the frame buffer when the frame buffer is currently updated according to the window buffer.
Claim 28
Dependent Claim
81 words
A medium as in claim 24 wherein the method further comprises: determining a fifth region in the first pixel image, the fifth region scrolled with the first region in the window buffer, before being scrolled the fifth region corresponding to a sixth region within the second pixel image of the second geometry, the sixth region being outside the first geometry; and copying second data for the fifth region from the window buffer to the frame buffer to update the sixth region.
Claim 29
Dependent Claim
20 words
A medium as in claim 24 wherein when scrolled a portion of the second region is outside the first geometry.
Claim 30
Dependent Claim
168 words
A data processing system to scroll a buffered window, the data processing system comprising: means for determining geometries for a plurality of regions in a frame buffer including a second region and a fourth of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image the second pixel image being displayed on a screen, the geometries including shapes of the plurality of regions; means for copying first data for the third region in the window buffer to the frame buffer to update the sixth region; and means for scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image.
Claim 31
Dependent Claim
168 words
A data processing system to scroll a buffered window, the data processing system comprising: means for determining geometries for a plurality of regions in a frame buffer including a second region and a fourth of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image the second pixel image being displayed on a screen, the geometries including shapes of the plurality of regions; means for copying first data for the third region in the window buffer to the frame buffer to update the sixth region; and means for scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image.
Claim 32
Dependent Claim
77 words
A data processing system as in claim 27 further comprising: means for determining a first location of a third region of the first pixel image relative to the first pixel image after the first region is scrolled, the third region being updated in the window buffer before the first region is scrolled, the first data for the third region corresponding to the first location in the window buffer to the frame buffer to update the fourth region.
Claim 33
Dependent Claim
20 words
A data processing system as in claim 28 wherein the first data is copied after the second region is scrolled.
Claim 34
Dependent Claim
30 words
A data processing system as in claim 28 wherein the first data is copied before the second region is scrolled; and wherein the fourth region is within the second region.
Claim 35
Dependent Claim
17 words
A data processing system as in claim 27 wherein the second region is scrolled using graphics hardware.
Claim 36
Dependent Claim
24 words
A data processing system as in claim 31 wherein the frame buffer is located inside a video memory under control of the graphics hardware.
Claim 37
Dependent Claim
41 words
A data processing system as in claim 27 wherein before being scrolled the second region is within a first geometry of the window as displayed in the frame buffer where the frame buffer is previously updated according to the window buffer.
Claim 38
Dependent Claim
41 words
A data processing system as in claim 33 wherein after being scrolled the second region is within a second geometry of the window as displayed in the frame buffer when the frame buffer is currently updated according to the window buffer.
Claim 39
Dependent Claim
84 words
A data processing system as in claim 34 further comprising: means for determining a fifth region in the first pixel image, the fifth region scrolled with the first region in the window buffer, before being scrolled the fifth region corresponding to a sixth region within the second pixel image of the second geometry, the sixth region being outside the first geometry; and means for copying second data for the fifth region from the window buffer to the frame buffer to update the sixth region.
Claim 40
Dependent Claim
22 words
A data processing system as in claim 34 wherein when scrolled a portion of the second region is outside the first geometry.
Claim 41
Independent Claim
176 words
A method to scroll a buffered window on a data processing system, the method comprising: determining geometries for a plurality of regions from a second pixel image of a window in a frame buffer including a second region and a fourth region, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image, the window buffer being separate from the frame buffer, the first region being scrolled from a first position to a second position in the first pixel image, the geometries including shapes of the plurality of regions; scrolling the second region of a second pixel image of a window in the frame buffer to synchronize the second pixel image with the first pixel image, the second pixel image being displayed on a screen; and copying data from the third region of the first pixel image in the window buffer to the fourth region of the second image in the frame buffer.
Claim 42
Independent Claim
176 words
A method to scroll a buffered window on a data processing system, the method comprising: determining geometries for a plurality of regions from a second pixel image of a window in a frame buffer including a second region and a fourth region, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image, the window buffer being separate from the frame buffer, the first region being scrolled from a first position to a second position in the first pixel image, the geometries including shapes of the plurality of regions; scrolling the second region of a second pixel image of a window in the frame buffer to synchronize the second pixel image with the first pixel image, the second pixel image being displayed on a screen; and copying data from the third region of the first pixel image in the window buffer to the fourth region of the second image in the frame buffer.
Claim 43
Dependent Claim
15 words
A method as in claim 37 wherein the second region is scrolled using graphics hardware.
Claim 44
Dependent Claim
22 words
A method as in claim 38 wherein the frame buffer is located inside a video memory under control of the graphics hardware.
Claim 45
Dependent Claim
39 words
A method as in claim 37 wherein before being scrolled the second region is within a first geometry of the window as displayed in the frame buffer where the frame buffer is previously updated according to the window buffer.
Claim 46
Dependent Claim
39 words
A method as in claim 40 wherein after being scrolled the second region is within a second geometry of the window as displayed in the frame buffer when the frame buffer is currently updated according to the window buffer.
Claim 47
Dependent Claim
20 words
A method as in claim 41 wherein when scrolled a portion of the second region is outside the first geometry.
Claim 48
Dependent Claim
199 words
A machine readable storage medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to scroll a buffered window on the data processing system, the method comprising: determining geometries for a plurality of regions from a second pixel image of a window in a frame buffer including a second region and a fourth region, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image, the window buffer being separate from the frame buffer, the first region being scrolled from a first position to a second position in the first pixel image, the geometries including shapes of the plurality of regions; scrolling the second region of the second pixel image of the window in the frame buffer to synchronize the second pixel image with the first pixel image, the second pixel image being displayed on a screen; and copying data from the third region of the first pixel image in the window buffer to the fourth region of the second image in the frame buffer.
Claim 49
Dependent Claim
199 words
A machine readable storage medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to scroll a buffered window on the data processing system, the method comprising: determining geometries for a plurality of regions from a second pixel image of a window in a frame buffer including a second region and a fourth region, the second region corresponding to a first region of a first pixel image of the window buffered in a window buffer, the fourth region corresponding to a third region of the first pixel image, the window buffer being separate from the frame buffer, the first region being scrolled from a first position to a second position in the first pixel image, the geometries including shapes of the plurality of regions; scrolling the second region of the second pixel image of the window in the frame buffer to synchronize the second pixel image with the first pixel image, the second pixel image being displayed on a screen; and copying data from the third region of the first pixel image in the window buffer to the fourth region of the second image in the frame buffer.
Claim 50
Dependent Claim
15 words
A medium as in claim 43 wherein the second region is scrolled using graphics hardware.
Claim 51
Dependent Claim
22 words
A medium as in claim 44 wherein the frame buffer is located inside a video memory under control of the graphics hardware.
Claim 52
Dependent Claim
39 words
A medium as in claim 43 wherein before being scrolled the second region is within a first geometry of the window as displayed in the frame buffer where the frame buffer is previously updated according to the window buffer.
Claim 53
Dependent Claim
39 words
A medium as in claim 46 wherein after being scrolled the second region is within a second geometry of the window as displayed in the frame buffer when the frame buffer is currently updated according to the window buffer.
Claim 54
Dependent Claim
20 words
A medium as in claim 47 wherein when scrolled a portion of the second region is outside the first geometry.
Claim 55
Dependent Claim
201 words
A data processing system to scroll a buffered window, the data processing system comprising: a bus; graphics hardware coupled to the bus; a frame buffer coupled to the graphics hardware; a processor coupled to the bus; a window buffer accessible to the processor through the bus, the processor determining geometries for a plurality of regions from the frame buffer including a second region and a fourth region of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in the window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image, the graphics hardware scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image, the graphics hardware copying first data for the third region in the window buffer to the frame buffer to update the fourth region, the graphics hardware displaying the second pixel image, the geometries including shapes of the plurality of regions.
Claim 56
Dependent Claim
201 words
A data processing system to scroll a buffered window, the data processing system comprising: a bus; graphics hardware coupled to the bus; a frame buffer coupled to the graphics hardware; a processor coupled to the bus; a window buffer accessible to the processor through the bus, the processor determining geometries for a plurality of regions from the frame buffer including a second region and a fourth region of a second pixel image of a window in the frame buffer, the second region corresponding to a first region of a first pixel image of the window buffered in the window buffer, the fourth region corresponding to a third region of the first pixel image of the window buffered in the window buffer, the first region being scrolled from a first position to a second position in the first pixel image, the graphics hardware scrolling the second region in the frame buffer to synchronize the second pixel image with the first pixel image, the graphics hardware copying first data for the third region in the window buffer to the frame buffer to update the fourth region, the graphics hardware displaying the second pixel image, the geometries including shapes of the plurality of regions.
Claim 57
Dependent Claim
79 words
A data processing system as in claim 49 wherein the processor determines a first location of the third region of the first pixel image relative to the first pixel image after the first region is scrolled; the third region is updated in the window buffer before the first region is scrolled; and, the first data for the third region corresponding to the first location in the window buffer is copied to the frame buffer to update the fourth region.
Claim 58
Dependent Claim
20 words
A data processing system as in claim 50 wherein the first data is copied after the second region is scrolled.
Claim 59
Dependent Claim
30 words
A data processing system as in claim 50 wherein the first data is copied before the second region is scrolled; and wherein the fourth region is within the second region.
Claim 60
Dependent Claim
19 words
A data processing system as in claim 50 wherein the window buffer is under control of the graphics hardware.
Claim 61
Dependent Claim
41 words
A data processing system as in claim 49 wherein before being scrolled the second region is within a first geometry of the window as displayed in the frame buffer where the frame buffer is previously updated according to the window buffer.
Claim 62
Dependent Claim
41 words
A data processing system as in claim 54 wherein after being scrolled the second region is within a second geometry of the window as displayed in the frame buffer when the frame buffer is currently updated according to the window buffer.
Claim 63
Dependent Claim
22 words
A data processing system as in claim 55 wherein when scrolled a portion of the second region is outside the first geometry.
Claim 64
Independent Claim
126 words
A method to scroll information displayed on a display device by a data processing system, said method comprising: determining geometries for a plurality of regions of a window in a frame buffer which is coupled to said display device, the plurality of regions including a scrollable region and a non-scrollable region, the geometries including shapes of the plurality of regions; moving said scrollable region in said frame buffer; and flushing a portion of a window buffer, maintained for the window, to said frame buffer, said portion having a predetermined spatial relationship to the scrollable region, said portion corresponding to the non-scrollable region of the window in the frame buffer, said display device displaying the non-scrollable region, and the window buffer being separate from the frame buffer.
Claim 65
Independent Claim
126 words
A method to scroll information displayed on a display device by a data processing system, said method comprising: determining geometries for a plurality of regions of a window in a frame buffer which is coupled to said display device, the plurality of regions including a scrollable region and a non-scrollable region, the geometries including shapes of the plurality of regions; moving said scrollable region in said frame buffer; and flushing a portion of a window buffer, maintained for the window, to said frame buffer, said portion having a predetermined spatial relationship to the scrollable region, said portion corresponding to the non-scrollable region of the window in the frame buffer, said display device displaying the non-scrollable region, and the window buffer being separate from the frame buffer.
Claim 66
Dependent Claim
22 words
A method as in claim 57 further comprising: displaying said scrollable region and said portion, after said flushing, on said display device.
Claim 67
Dependent Claim
30 words
A method as in claim 58 wherein said moving comprises scrolling said scrollable region on said display device and wherein a graphics hardware in a display controller causes said scrolling.
Claim 68
Dependent Claim
29 words
A method as in claim 58 wherein only said portion of said window buffer is flushed and a remainder in said window buffer is not flushed in said flushing.
Claim 69
Dependent Claim
22 words
A method as in claim 58 wherein said predetermined spatial relationship is a contiguous relationship between said scrollable region and said portion.
Claim 70
Dependent Claim
32 words
A method as in claim 58 wherein said frame buffer is included in a display controller; and, wherein said window buffer is included in main system memory of said data processing system.
Claim 71
Dependent Claim
35 words
A method as in claim 58 wherein application software writes display data to said window buffer rather than to said frame buffer; and, wherein a windowing system of said data processing system performs said flushing.
Claim 72
Dependent Claim
19 words
A method as in claim 60 wherein said portion is a dirty portion and the remainder is not dirty.
Claim 73
Dependent Claim
157 words
A machine readable storage medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to scroll information displayed on a display device by a data processing system, said method comprising: determining geometries for a plurality of regions of a window in a frame buffer which is coupled to said display device, the plurality of regions including a scrollable region and non-scrollable region, the scrollable region being scrollable in the frame buffer, the geometries including shapes of the plurality of regions; moving said scrollable region in said frame buffer; and flushing a portion of a window buffer, maintained for the window, to said frame buffer, said portion having a predetermined spatial relationship to the scrollable region, said portion corresponding to the non-scrollable region of the window in the frame buffer, said display device displaying the non-scrollable region, and the window buffer being separate from the frame buffer.
Claim 74
Dependent Claim
157 words
A machine readable storage medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to scroll information displayed on a display device by a data processing system, said method comprising: determining geometries for a plurality of regions of a window in a frame buffer which is coupled to said display device, the plurality of regions including a scrollable region and non-scrollable region, the scrollable region being scrollable in the frame buffer, the geometries including shapes of the plurality of regions; moving said scrollable region in said frame buffer; and flushing a portion of a window buffer, maintained for the window, to said frame buffer, said portion having a predetermined spatial relationship to the scrollable region, said portion corresponding to the non-scrollable region of the window in the frame buffer, said display device displaying the non-scrollable region, and the window buffer being separate from the frame buffer.
Claim 75
Dependent Claim
25 words
A medium as in claim 65 wherein said method further comprises: displaying said scrollable region and said portion, after said flushing, on said display device.
Claim 76
Dependent Claim
30 words
A medium as in claim 66 wherein said moving comprises scrolling said scrollable region on said display device and wherein a graphics hardware in a display controller causes said scrolling.
Claim 77
Dependent Claim
29 words
A medium as in claim 66 wherein only said portion of said window buffer is flushed and a remainder in said window buffer is not flushed in said flushing.
Claim 78
Dependent Claim
22 words
A medium as in claim 66 wherein said predetermined spatial relationship is a contiguous relationship between said scrollable region and said portion.
Claim 79
Dependent Claim
32 words
A medium as in claim 66 wherein said frame buffer is included in a display controller; and, wherein said window buffer is included in main system memory of said data processing system.
Claim 80
Dependent Claim
35 words
A medium as in claim 66 wherein application software writes display data to said window buffer rather than to said frame buffer; and, wherein a windowing system of said data processing system performs said flushing.
Claim 81
Dependent Claim
19 words
A medium as in claim 68 wherein said portion is a dirty portion and the remainder is not dirty.
Claim 82
Dependent Claim
140 words
A data processing system to scroll information displayed on a display device, said data processing system comprising: means for determining geometries for a plurality of regions of a window in a frame buffer which is coupled to said display device, the plurality of regions including a scrollable region and a non-scrollable region, the scrollable region being scrollable in the frame buffer, the geometries including shaves of the plurality of regions; means for moving said scrollable region in said frame buffer; and means for flushing a portion of a window buffer, maintained for the window, to said frame buffer, said portion having a predetermined spatial relationship to the scrollable region, said portion corresponding to the non-scrollable region of the window in the frame buffer, said display device displaying the non-scrollable region, and the window buffer being separate from the frame buffer.
Claim 83
Dependent Claim
140 words
A data processing system to scroll information displayed on a display device, said data processing system comprising: means for determining geometries for a plurality of regions of a window in a frame buffer which is coupled to said display device, the plurality of regions including a scrollable region and a non-scrollable region, the scrollable region being scrollable in the frame buffer, the geometries including shaves of the plurality of regions; means for moving said scrollable region in said frame buffer; and means for flushing a portion of a window buffer, maintained for the window, to said frame buffer, said portion having a predetermined spatial relationship to the scrollable region, said portion corresponding to the non-scrollable region of the window in the frame buffer, said display device displaying the non-scrollable region, and the window buffer being separate from the frame buffer.
Claim 84
Dependent Claim
26 words
A data processing system as in claim 73 further comprising: means for displaying said scrollable region and said portion, after said flushing, on said display device.
Claim 85
Dependent Claim
40 words
A data processing system as in claim 74 wherein said means for moving comprises means for scrolling said scrollable region on said display device and wherein a graphics hardware in a display controller causes said means for scrolling to scroll.
Claim 86
Dependent Claim
28 words
A data processing system as in claim 74 wherein only said portion of said window buffer is flushed and a remainder in said window buffer is not flushed.
Claim 87
Dependent Claim
24 words
A data processing system as in claim 74 wherein said predetermined spatial relationship is a contiguous relationship between said scrollable region and said portion.
Claim 88
Dependent Claim
34 words
A data processing system as in claim 74 wherein said frame buffer is included in a display controller; and, wherein said window buffer is included in main system memory of said data processing system.
Claim 89
Dependent Claim
37 words
A data processing system as in claim 74 wherein application software writes display data to said window buffer rather than to said frame buffer; and, wherein a windowing system of said data processing system performs said flushing.
Claim 90
Dependent Claim
21 words
A data processing system as in claim 76 wherein said portion is a dirty portion and the remainder is not dirty.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2010-12-24 | 2011-06-25 | 2011-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-12-24 | 2015-06-25 | 2015-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-12-24 | 2019-06-25 | 2019-12-25 | $7700.00 | Window Closed / Lapsed |