INTELLIGENT DISPLAY INTERFACE
First Claim
Patent Images
1. A method of displaying an image, comprising:
- transmitting a first portion of first video image data to a first video memory in a first display device; and
updating the first video memory with the first portion;
wherein the first portion contains video data representing a part of the first video image data that has changed since a previous transmission to the first display device, and the first portion excludes a substantial part of the first video image data that is unchanged since the previous transmission to the first display device.
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Abstract
A video display system that co-locates a video display memory with the video display device, and transmits to the display device those portions of the image data that have changed rather than continually updating the entire video image. Each display device is addressable, allowing multiple display devices showing different images to be updated through a single display controller port over a single bus or over a single daisy-chain connection. The image data can be updated synchronously or asynchronously, and display devices using different formats can share the same bus or cable.
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Citations
26 Claims
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1. A method of displaying an image, comprising:
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transmitting a first portion of first video image data to a first video memory in a first display device; and
updating the first video memory with the first portion;
wherein the first portion contains video data representing a part of the first video image data that has changed since a previous transmission to the first display device, and the first portion excludes a substantial part of the first video image data that is unchanged since the previous transmission to the first display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21)
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14. A display device, comprising:
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a memory to store image data for display of a video image; and
a receiver to detect a predetermined device address in a received data stream containing video data for updating a portion of the stored image data;
wherein the video data includes a part of the image data that has changed since a previously received data stream, and the video data excludes a substantial part of the image data that is unchanged since the previously received data stream.
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22. A system for displaying video images, comprising:
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a communications channel;
first and second display devices coupled to the communications channel; and
a graphics controller coupled to the communications channel to update a first portion of a first image displayed by the first display device and to update a second portion of a second image displayed by the second display device. - View Dependent Claims (23, 24, 25, 26)
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Specification