METHOD OF DETECTING CHANGE IN DISPLAY DATA
First Claim
Patent Images
1. A method of updating a display, the method comprising:
- obtaining a first identifying value corresponding to a first unit of display data;
obtaining a second identifying value corresponding to a second unit of display data;
comparing the first and second identifying values; and
selectively writing the first unit of display data to a display based, at least in part, on the comparison.
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Abstract
An apparatus and method for updating a display are disclosed. Identifying values are determined for units of display data. Identifying values for units of display data received during an update are compared to identifying values for previously received units of display data. Depending on the comparison, the update of the corresponding portion of the display may be skipped.
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Citations
20 Claims
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1. A method of updating a display, the method comprising:
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obtaining a first identifying value corresponding to a first unit of display data; obtaining a second identifying value corresponding to a second unit of display data; comparing the first and second identifying values; and selectively writing the first unit of display data to a display based, at least in part, on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for updating a display, the apparatus comprising:
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a processor configured to; obtain a first identifying value based corresponding to a first unit of display data; obtain a second identifying value based corresponding to a second unit of display data; compare the first and second identifying values; and selectively write the first unit of display data to a display based, at least in part, on the comparison.
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12. A display apparatus, the apparatus comprising:
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a memory storing one or more identifying values corresponding to respective units of display data, wherein the identifying values comprise less data than the corresponding units of display data; and a frame buffer storing the corresponding units of display data. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. An apparatus for updating a display, the apparatus comprising
means for obtaining a first identifying value corresponding to a first unit of display data; -
means for obtaining a second identifying value corresponding to a second unit of display data; means for comparing the first and second identifying values; and means for selectively writing the first unit of display data to a display based, at least in part, on the comparison.
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20. A computer program product comprising:
a computer-readable medium having stored thereon, computer executable instructions that, if executed by an apparatus, cause the apparatus to perform a method comprising; obtaining a first identifying value corresponding to a first unit of display data; obtaining a second identifying value corresponding to a second unit of display data; comparing the first and second identifying values; and selectively writing the first unit of display data to a display based, at least in part, on the comparison.
Specification