Display apparatus with digital output palette
First Claim
1. Data processing apparatus for generating serial video bit stream in the form of pulsed pixel data words, comprising:
- a pixel clock generator for generating a pixel clock signal;
palette logic for generating a pixel data word on each pulse of the pixel clock signal;
shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel data word to produce a shift clock signal; and
serialiser logic for outputting the pixel data word in a serial bit stream at the shift clock signal rate.
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Accused Products
Abstract
A display system comprises a digital video source coupled to a digital display device via an digital interface having a timing channel for carrying a pixel clock signal from the video source to the display device and a digital video channel for carrying a digital video bit stream from the video source to the display device. The video source comprises a pixel clock generator for generating the pixel clock signal, palette logic for outputting a pixel word on each pulse of the pixel clock signal, shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal, and serialiser logic for serially outputting the pixel word in the serial bit stream at the shift clock signal rate. The display device comprises a display screen for producing a pixel of an image in response to the pixel word; shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel word, and deserialiser logic for receiving the input video bit stream at the shift clock signal rate to re-generate the pixel word from the video bit stream.
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Citations
14 Claims
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1. Data processing apparatus for generating serial video bit stream in the form of pulsed pixel data words, comprising:
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a pixel clock generator for generating a pixel clock signal; palette logic for generating a pixel data word on each pulse of the pixel clock signal; shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel data word to produce a shift clock signal; and serialiser logic for outputting the pixel data word in a serial bit stream at the shift clock signal rate. - View Dependent Claims (2, 3, 4, 5)
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6. A digital display data processing apparatus comprising:
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a display screen for producing a pixel of an image in response to a pixel word; a timing receiver for receiving a pixel clock signal from an external video source; shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal; and deserialiser logic for receiving an input video bit stream at the shift clock signal rate to generate the pixel word. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A data processing display system, comprising:
a digital video source coupled to a digital display device through a digital interface having a timing channel for carrying a pixel clock signal from the digital video source to the digital display device and a digital video channel for carrying a digital video bit stream from the digital video source to the digital display device, wherein the digital video source includes a pixel clock generator for generating the pixel clock signal, palette logic for outputting a pixel word on each pulse of the pixel clock signal, first shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal, and serialiser logic for serially outputting the pixel word in the serial bit stream at the shift clock signal rate, and wherein the digital display device includes a display screen for producing a pixel of an image in response to the pixel word, second shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word, and deserialiser logic for receiving the input video bit stream at the shift clock signal rate to re-generate the pixel word from the video bit stream. - View Dependent Claims (13)
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14. A computer system comprising.
a processor; -
a memory; and a display system including a digital video source coupled to a digital display device through a digital interface having a timing channel for carrying a pixel clock signal from the digital video source to the digital display device, and a digital video channel for carrying a digital video bit stream from the digital video source to the digital display device, wherein the digital video source includes a pixel clock generator for generating the pixel clock signal, palette logic for outputting a pixel word on each pulse of the pixel clock signal, first shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal, and serialiser logic for serially outputting the pixel word in the digital video bit stream at the shift clock signal rate, and wherein the digital display device includes a display screen for producing a pixel of an image in response to the pixel word, second shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word, and deserialiser logic for receiving the serially outputted pixel word in the digital video bit stream from the serialiser logic at the shift clock signal rate to re-generate the pixel word from the digital video bit stream.
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Specification