Patent EP0651577A2 successfully refreshed from Google Patents.
EP0651577A2
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EP
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Digital television system
Assignee: Texas Instruments Inc
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Filing: 1994-10-27
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Granted: —
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Expires: 2014-10-27
Abstract
Abstract A digital television system (10) is provided. System (10) may receive a video signal at composite video interface and separation circuit (16). The video signal is separated into separate video signals by composite video interface and separation circuit (16). The separate video signals are converted to digital video signals in analog to digital converter circuit (18). Line slicer (14) divides each line of digital video signal into a plurality of channels such that each channel may be processed in parallel by channel signal processors (22a) through (22d). Each channel signal processor (22a) through (22d) may provide two lines of output for each line of video input. The processed digital video signals may be formatted for displays (26a) through (26c) in formatters (24a) through (24c). <IMAGE>
Inventors
- 👤 Robert J. Gove
- 👤 Stephen W. Marshall
- 👤 Vishal Markandey
- 👤 Donald B. Doherty
- 👤 Richard C. Meyer
- 👤 Scott D. Heimbuch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:07
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/40; H04N21/43; H04N21/434; H04N9/00; H04N9/64; H04N9/68; H04N9/69; H04N19/00; H04N19/42; H04N19/423; H04N19/436; H04N19/60; H04N19/61; H04N21/41; H04N21/426; H04N21/44; H04N21/4402; H04N3/00; H04N3/02; H04N3/08; H04N5/00; H04N5/14; H04N5/144; H04N5/44; H04N5/74; H04N5/7416; H04N5/7458; H04N7/00; H04N7/01; H04N7/0117; H04N7/012; H04N7/0135; H04N9/12; H04N9/31; H04N9/3141; H04N9/3147; H04N9/642; H04N9/643; H04N9/67; H04N19/30; H04N2005/7466; H04N7/0122
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
58 words
A digital television system, comprising: circuitry operable to divide a line of input video signals into a plurality of channels for each input video signal; circuitry responsive to said dividing circuitry and operable to simultaneously process said channels of input video signals; and circuitry responsive to said processing circuitry and operable to display said processed input video signals.
Claim 2
Dependent Claim
76 words
The system of Claim 1, wherein, for each channel created by said dividing circuitry, said processing circuitry comprises a video signal processor operable to convert each line of input video signal into two lines of input video signal, to control sharpness, hue, saturation, contrast, and brightness of said video input signals, to convert said input video signals from one color space to another color space, and to remove a gamma curve from said input video signals.
Claim 3
Dependent Claim
123 words
The system of Claim 1, wherein said processing circuitry comprises: a matrix multiplication circuit responsive to said processing circuitry and operable to convert said input video signals from one color space to another color space, and operable to control hue and saturation of said input video signals; a look up table responsive to said matrix multiplication circuit and operable to remove a gamma curve from said input video signals, and operable to control contrast and brightness of said input video signals; and at least one scan line video processor responsive to said first look up table and operable to convert each line of input video signal into two lines of input video signal, and operable to control sharpness of said input video signals.
Claim 4
Dependent Claim
126 words
The system of Claim 1 or Claim 2, wherein said processing circuitry comprises: at least one scan line video processor responsive to said dividing circuitry and operable to convert each line of input video signal into two lines of input video signal, and operable to control sharpness of said input video signals; a matrix multiplication circuit responsive to said scan line video processors and operable to convert said input video signals from one color space to another color space, and operable to control hue and saturation of said input video signals; and a look up table responsive to said matrix multiplication circuit and operable to remove a gamma curve from said input video signals, and operable to control contrast and brightness of said input video signals.
Claim 5
Dependent Claim
126 words
The system of Claim 1 or Claim 2, wherein said processing circuitry comprises: a matrix multiplication circuit responsive to said dividing circuitry and operable to convert said input video signals from one color space to another color space, and operable to control hue and saturation of said input video signals; at least one scan line video processor responsive to said matrix multiplication circuit and operable to convert each line of input video signal into two lines of input video signal, and operable to control sharpness of said input video signals; and a look up table responsive to said scan line video processor and operable to remove a gamma curve from said input video signals, and operable to control contrast and brightness of said input video signals.
Claim 6
Dependent Claim
126 words
The system of Claim 1 or Claim 2, wherein said processing circuitry comprises: a look up table responsive to said dividing circuitry and operable to remove a gamma curve from said input video signals, and operable to control contrast and brightness of said input video signals; at least one scan line video processor responsive to said look up table and operable to convert each line of input video signal into two lines of input video signal, and operable to control sharpness of said input video signals; and a matrix multiplication circuit responsive to said scan line video processors and operable to convert said input video signals from one color space to another color space, and operable to control hue and saturation of said input video signals.
Claim 7
Dependent Claim
213 words
The system of Claim 1 or Claim 2, wherein for each channel created by said dividing circuitry, said processing circuitry comprises: a first matrix multiplication circuit responsive to said dividing circuitry and operable to convert said input video signals from one color space to another color space, and operable to control hue and saturation of said input video signals; a first look up table responsive to said first matrix multiplication circuit and operable to remove a gamma curve from said input video signals, and operable to control contrast and brightness of said input video signals; at least one scan line video processor responsive to said first look up table and operable to convert each line of input video signal into two lines of input video signal, and operable to control sharpness of said input video signals; a second matrix multiplication circuit responsive to said scan line video processors and operable to convert said input video signals from one color space to another color space, and operable to control hue and saturation of said input video signals; and a second look up table responsive to said second matrix multiplication circuit and operable to remove a gamma curve from said input video signals, and operable to control contrast and brightness of said input video signals.
Claim 8
Independent Claim
20 words
The system of any preceding Claim, wherein said displaying circuitry comprises one spatial light modulator for each input video signal.
Claim 9
Independent Claim
20 words
The system of any preceding Claim, wherein said displaying circuitry comprises one digital micromirror device for each input video signal.
Claim 10
Independent Claim
31 words
The system of any preceding Claim, wherein said dividing circuitry comprises a line slicer operable to divide a line of input video signals into four channels for each input video signal.
Claim 11
Independent Claim
34 words
The system of any of Claims 1 to 9, wherein said dividing circuitry comprises a line slicer operable to divide a line of input video signals into five channels for each input video signal.
Claim 12
Independent Claim
43 words
The system of any preceding Claim, and further comprising circuitry coupled to said dividing circuitry and operable to receive a composite video signal from a standard video source and to convert said composite video signal to a plurality of digital input video signals.
Claim 13
Independent Claim
33 words
The system of any preceding Claim, and further comprising circuitry responsive to said processing circuitry and coupled to said displaying circuitry and operable to format said processed input video signals for said display.
Claim 14
Dependent Claim
35 words
The television system of any preceding Claim in the form of a high definition television system and further comprising circuitry operable to receive a video signal and to provide a plurality of digital video signals.
Claim 15
Dependent Claim
27 words
The system of Claim 14, and further comprising circuitry responsive to said processing circuitry and operable to format said processed digital video signals for said displaying circuitry.
Claim 16
Independent Claim
73 words
A method for creating a high definition video display from a standard video signal, comprising the steps of: separating a standard composite video signal into a plurality of video signals; sampling the separated video signals to create digital video signals; dividing said digital video signals into a plurality of channels; processing the plurality of channels of digital video signals in parallel; and displaying the processed digital video signals as a high definition display.
Claim 17
Dependent Claim
20 words
The method of Claim 16, and further comprising the step of formating the process digital video signals for a display.
Claim 18
Dependent Claim
42 words
The method of Claim 16 or Claim 17, wherein said step of sampling the separated video signals to create digital video signals comprises the step of sampling the separated video signals to create digital video signals in an analog to digital converter.
Claim 19
Independent Claim
35 words
The method of any of Claims 16 to 18, wherein said step of dividing said digital video signals into a plurality of channels comprises the step of dividing said digital video signals into four channels.
Claim 20
Independent Claim
35 words
The method of any of Claims 16 to 18, wherein said step of dividing said digital video signals into a plurality of channels comprises the step of dividing said digital video signals into five channels.
Claim 21
Independent Claim
39 words
The method of any of Claims 16 to 20, wherein said step of processing the plurality of channels of digital video signals in parallel comprises the step of processing the plurality of channels in a scan line video processor.
Claim 22
Independent Claim
35 words
The method of any of Claims 16 to 21, wherein said step of displaying the formatted digital video signals comprises the step of displaying the formatted digital video signals on a spatial light modulator display.
References Cited (Backward Citations)
No citation records indexed.
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