Display Interface Bandwidth Modulation
First Claim
Patent Images
1. A method comprising:
- compressing data at a compression ratio;
sending, from a display engine, compressed data across a display interface to a display panel;
using a checksum to enable the display panel to determine if data was lost in compression;
if so, receiving information from the display panel to indicate compression disparities; and
adapting the compression based on the information from the display panel.
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Abstract
Bandwidth modulation may enable most of the display data-path to operate at a lower performance level to reduce power consumption by using compression as part of the display engine capability. Use of compression may afford a bit rate reduction and/or lane width reduction on the display interface to support high resolution display. With the bit rate and/or lane reduction and selective use of a refresh rate reduction, this technique can be used to lower the power consumption of the display data-path.
33 Citations
25 Claims
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1. A method comprising:
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compressing data at a compression ratio; sending, from a display engine, compressed data across a display interface to a display panel; using a checksum to enable the display panel to determine if data was lost in compression; if so, receiving information from the display panel to indicate compression disparities; and adapting the compression based on the information from the display panel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving, in a display panel, compressed data and a checksum across a display interface; decompressing the compressed data; calculating another checksum for the decompressed data; comparing the another checksum to the received checksum; and transmitting an indication of the number of disparities to said display engine. - View Dependent Claims (9)
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10. One or more non-transitory computer readable media storing instructions executed by a processor to perform a sequence comprising:
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compressing data at a compression ratio; sending, from a display engine, compressed data across a display interface to a display panel; using a checksum to enable the display panel to determine if data was lost in compression; if so, receiving information from the display panel to indicate compression disparities; and adapting the compression based on the information from the display panel. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An apparatus comprising:
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a processor to compress data at a compression ratio, send, from a display engine, compressed data across a display interface to a display panel, use a checksum to enable the display panel to determine if data was lost in compression, if so, receive information from the display panel to indicate compression disparities, and adapt the compression based on the information from the display panel; and a storage coupled to said processor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification