System for transmission and recovery of digital data using video graphics display processor and method of operation thereof
First Claim
1. A process for outputting digital data stored in a memory of a computer having a graphics display processor comprising:
- reading digital data from the memory and processing the digital data to produce at least one serial data stream with the at least one serial data stream including the digital data and clock information, the clock information being a function of a clock signal representative of a rate at which the at least one serial data stream is outputted by a video channel;
serially outputting the at least one formatted serial data stream on the video channel under control of the graphics processor;
at least one of the at least one serial data stream also includes display information which permits the at least one serial data stream to be displayed by a video monitor connectable to the video channel;
processing at least one of the at least one serial data stream after outputting by the video channel to remove the display information from the processed at least one serial data stream; and
producing the clock signal representative of a bit rate at which the at least one serial data stream is outputted by the video channel in response to the clock information in the one of the at least one serial data stream.
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Accused Products
Abstract
A system (30) for outputting digital data stored in a memory of a computer (12) in accordance with the invention includes a graphics display processor (20), coupled to the memory, for processing the digital data stored in the memory to produce at least one serial data stream including clock information, which is a function of a clock signal representative of a rate at which the at least one display formatted serial data stream is outputted, and display information for use in controlling a video monitor; a video channel (24), coupled to the display processor, for outputting the at least one serial data stream produced by the graphics display processor; a data processing memory (52); and a data processing system (40, 44 and 50) for processing the at least one serial data stream in response to the clock information and for removing at least the display information and controlling storing of the at least one of the at least one serial data stream with the display information removed which contains the digital data read from the memory of the computer system.
34 Citations
43 Claims
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1. A process for outputting digital data stored in a memory of a computer having a graphics display processor comprising:
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reading digital data from the memory and processing the digital data to produce at least one serial data stream with the at least one serial data stream including the digital data and clock information, the clock information being a function of a clock signal representative of a rate at which the at least one serial data stream is outputted by a video channel; serially outputting the at least one formatted serial data stream on the video channel under control of the graphics processor; at least one of the at least one serial data stream also includes display information which permits the at least one serial data stream to be displayed by a video monitor connectable to the video channel; processing at least one of the at least one serial data stream after outputting by the video channel to remove the display information from the processed at least one serial data stream; and producing the clock signal representative of a bit rate at which the at least one serial data stream is outputted by the video channel in response to the clock information in the one of the at least one serial data stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for outputting digital data stored in a memory of a computer comprising:
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a graphics display processor, coupled to the memory, for processing the digital data stored in the memory to produce at least one serial data stream including clock information, which is a function of a clock signal representative of a rate at which the at least one display formatted serial data stream is outputted, and display information for use in controlling a video monitor; a video channel, coupled to the graphics display processor, for outputting the at least one serial data stream produced by the graphics display processor; a data processing memory; and a data processing system, coupled to the video channel and to the data processing memory, for processing the at least one serial data stream in response to the clock information and for removing at least the display information and controlling storing of the at least one of the at least one serial data stream with the display information removed in the data processing memory which contains the digital data read from the memory of the computer system. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 38)
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31. A system for backing up digital data stored in a memory of a computer comprising:
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a graphics display processor, coupled to the memory, for processing the digital data stored in the memory to produce at least one serial data stream including the digital data and clock information which is a function of a clock signal representative of a rate at which the at least one serial data stream is outputted; a video channel, coupled to the display processor, for outputting the at least one serial data stream produced by the graphics display processor; and a back up memory, coupled to the video channel, in which is written the at least one serial data stream from the video channel in a word format and provides the written digital data back to the memory to restore the digital data in the memory of the computer. - View Dependent Claims (32, 33)
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34. A process for outputting digital data stored in a memory of a computer having a graphics display processor comprising:
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reading digital data from the memory and processing the digital data to produce at least one serial data stream with the at least one serial data stream including the digital data and clock information, the clock information being a function of a clock signal representative of a rate at which the at least one serial data stream is outputted by a video channel; serially outputting the at least one formatted serial data stream on the video channel under control of the graphics processor; and
whereinat least one of the at least one serial data stream comprises a sequence of frames with each frame being serially read out as a series of lines under control of the graphics display processor, each line being formatted into a packet including the clock information comprising a sync field used for producing the clock signal, a scan line field for encoding an address of each line within each frame, a trigger field for encoding a number of a frame within the sequence of frames being outputted on the video channel, and a data field containing data from the block of digital data; and
whereineach frame is transmitted with a vertical synchronization pulse and a horizonal synchronization pulse is transmitted with each line. - View Dependent Claims (35, 36, 37)
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39. A process for outputting digital data stored in a memory of a computer having a graphics display processor comprising:
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reading digital data, without clock information, from the memory and processing the digital data to produce at least one serial data stream with the at least one serial data stream including the digital data and clock information, the clock information being a function of a rate at which the at least one serial data stream is outputted by a video channel and not being synchronization information used for controlling display of information from the video channel; and serially outputting the at least one serial data stream on the video channel under control of the graphics processor. - View Dependent Claims (40, 41, 42, 43)
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Specification