US5742274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video interface system utilizing reduced frequency video signal processing
Assignee: Avocent Huntsville LLC
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Filing: 1995-10-02
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Granted: 1998-04-21
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Expires: 2015-10-02
Abstract
Abstract A video interface system which samples an input video signal to capture a subset of pixels from first and second frames of the signal. A frame buffer temporarily stores the captured subsets of pixels from the first and second frames and a display interface unit reads the stored pixels out of the frame buffer for transfer to a flat panel display. The subsets of pixels from the first and second frames are interleaved on the display to provide a video image. The display is updated by replacing one of the displayed subsets of pixels with a subset of pixels captured from a subsequent frame of the video signal. In one embodiment, the subset of captured pixels from the first frame includes those pixels for which the sum of the respective row and column numbers is either odd or even and the subset of captured pixels from the second frame includes those pixels for which the sum of the respective row and column numbers is even or odd.
Inventors
- 👤 Keith E. Henry
- 👤 Barry N. Mansell
- 👤 Burt Hashizume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:08
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/641; G; G06; G06F; G06F3/00; G06F3/14; G06F3/147; H04N5/00; H04N5/66
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
89 words
A video signal interface system comprising: a sampling unit for sampling a video signal comprising a plurality of pixels to capture a first subset of pixels from a first frame of said video signal and for sampling said plurality of pixels to capture a second subset of pixels from a second frame of said video signal; and a display for simultaneously displaying said first subset of pixels of said first frame of said video signal and said second subset of pixels of said second frame of said video signal.
Claim 2
Dependent Claim
89 words
A video signal interface system comprising: a sampling unit for sampling a video signal comprising a plurality of pixels to capture a first subset of pixels from a first frame of said video signal and for sampling said plurality of pixels to capture a second subset of pixels from a second frame of said video signal; and a display for simultaneously displaying said first subset of pixels of said first frame of said video signal and said second subset of pixels of said second frame of said video signal.
Claim 3
Dependent Claim
40 words
The video signal interface system recited in claim 1 wherein said display is updated by replacing said first subset of pixels of said first frame with a subsequent subset of pixels captured from a subsequent frame of said video signal.
Claim 4
Dependent Claim
60 words
The video signal interface system recited in claim 2 wherein said sampling unit samples said plurality of pixels to capture a third subset of pixels from a third frame of said video signal and wherein said display is updated by replacing said first subset of pixels from said first frame with said third subset of pixels from said third frame.
Claim 5
Dependent Claim
106 words
The video signal interface system recited in claim 1 wherein each of said plurality of pixels has a row number and a column number associated therewith corresponding to the position of said pixel within the respective one of said first and second frames and wherein said first subset of pixels from said first frame includes pixels for which the sum of the respective row and column numbers is a selected one of odd and even and said second subset of pixels from said second frame includes pixels for which the sum of the respective row and column numbers is the other one of odd and even.
Claim 6
Dependent Claim
35 words
The video signal interface system recited in claim 1 further comprising a memory device for temporarily storing said first and second subsets of pixels from said first and second frames of said video signal, respectively.
Claim 7
Dependent Claim
34 words
The video signal interface system recited in claim 1 wherein said first subset of pixels from said first frame is interleaved with said second subset of pixels from said second frame on said display.
Claim 8
Dependent Claim
17 words
The video signal interference system recited in claim 1 wherein said display is a flat panel display.
Claim 9
Dependent Claim
21 words
The video signal interface system recited in claim 1 wherein said sampling unit comprises at least one analog to digital converter.
Claim 10
Independent Claim
80 words
A method for processing a video signal comprising a plurality of pixels said method comprising the steps of: sampling said plurality of pixels to capture a first subset of pixels from a first frame of said video signal; sampling said plurality of pixels to capture a second subset of pixels from said second frame of said video signal; and displaying said first subset of pixels from said first frame together with said second subset of pixels from said second frame.
Claim 11
Independent Claim
80 words
A method for processing a video signal comprising a plurality of pixels said method comprising the steps of: sampling said plurality of pixels to capture a first subset of pixels from a first frame of said video signal; sampling said plurality of pixels to capture a second subset of pixels from said second frame of said video signal; and displaying said first subset of pixels from said first frame together with said second subset of pixels from said second frame.
Claim 12
Dependent Claim
40 words
The method recited in claim 9 further comprising the step of updating said display by replacing said first subset of pixels from said first frame with a subsequent subset of pixels captured from a subsequent frame of said video signal.
Claim 13
Dependent Claim
72 words
The method recited in claim 10 further comprising the step of sampling said plurality of pixels to capture a third subset of pixels from said third frame of said video signal and wherein said display is updated by replacing said first subset of pixels from said first frame with said third subset of pixels from said third frame, said third subset of pixels having corresponding locations with said first subset of pixels.
Claim 14
Dependent Claim
123 words
The method recited in claim 9 wherein each of said plurality of pixels has a row number and a column number associated therewith corresponding to the position of said pixel within the respective one of said first and second frames and wherein said step of sampling said plurality of pixels to capture a first subset of pixels comprises the step of sampling pixels for which the sum of the respective row and column numbers is a selected one of odd and even and said step of sampling said plurality of pixels to capture a second subset of pixels comprises the step of sampling pixels for which the sum of the respective row and column numbers is the other one of odd and even.
Claim 15
Dependent Claim
32 words
The method recited in claim 9 further comprising the step of temporarily storing said first subset of pixels from said first frame and said second subset of pixels from said second frame.
Claim 16
Dependent Claim
35 words
The method recited in claim 9 wherein said displaying step further comprises the step of interleaving said first subset of pixels from said first frame with said second subset of pixels from said second frame.
Claim 17
Dependent Claim
39 words
The method recited in claim 9 wherein said displaying step comprises the step of displaying said first subset of pixels from said first frame and said second subset of pixels from said second frame on a flat panel display.
Claim 18
Dependent Claim
95 words
A video signal interface system comprising: a sampling unit for sampling a plurality of pixels to capture a first subset of pixels from a first frame of a video signal, wherein uncaptured pixels from said first frame are discarded and for sampling said plurality of pixels to capture a second subset of pixels from a second frame of said video signal, wherein uncaptured pixels from said second frame are discarded; and a display for displaying said first subset of pixels from said first frame together with said second subset of pixels from said second frame.
Claim 19
Dependent Claim
95 words
A video signal interface system comprising: a sampling unit for sampling a plurality of pixels to capture a first subset of pixels from a first frame of a video signal, wherein uncaptured pixels from said first frame are discarded and for sampling said plurality of pixels to capture a second subset of pixels from a second frame of said video signal, wherein uncaptured pixels from said second frame are discarded; and a display for displaying said first subset of pixels from said first frame together with said second subset of pixels from said second frame.
Claim 20
Dependent Claim
105 words
The video interface system recited in claim 16 wherein each of said plurality of pixels has a row number and a column number associated therewith corresponding to the position of said pixels within the respective one of said first and second frames and wherein said first subset of pixels from said first frame includes pixels for which the sum of the respective row and column numbers is a selected one of odd and even and said second subset of pixels from said second frame includes pixels for which the sum of the respective row and column numbers is the other one of odd and even.
Claim 21
Dependent Claim
20 words
The video interface system recited in claim 16 wherein said sampling unit comprises at least one analog to digital converter.
Claim 22
Independent Claim
93 words
A method for processing a video signal comprising the steps of: sampling selected pixels of a plurality of pixels to capture a first subset of pixels from a first frame of said video signal; discarding uncaptured pixels from said first frame; sampling selected pixels of said plurality of pixels to capture a second subset of pixels from a second frame of said video signal; discarding uncaptured pixels from said second frame; and displaying said first subset of pixels from said first frame together with said second subset of pixels from said second frame.
Claim 23
Independent Claim
93 words
A method for processing a video signal comprising the steps of: sampling selected pixels of a plurality of pixels to capture a first subset of pixels from a first frame of said video signal; discarding uncaptured pixels from said first frame; sampling selected pixels of said plurality of pixels to capture a second subset of pixels from a second frame of said video signal; discarding uncaptured pixels from said second frame; and displaying said first subset of pixels from said first frame together with said second subset of pixels from said second frame.
Claim 24
Dependent Claim
123 words
The method recited in claim 19 wherein each of said plurality of pixels has a row number and a column number associated therewith corresponding to the position of said pixels within the respective one of said first and second frames and wherein said step of sampling said plurality of pixels to capture said first subset of pixels comprises the step of sampling pixels for which the sum of the respective row and column numbers is a selected one of odd and even and said step of sampling said plurality of pixels to capture said second subset of pixels comprises the step of sampling pixels for which the sum of the respective row and column numbers is the other one of odd and even.
References Cited (Backward Citations)
US4393414A
Cited
US4386367A
Cited
US4628344A
Cited
US4661862A
Cited
US4639783A
Cited
US4682225A
Cited
US4885787A
Cited
US5057932A
Cited
US5164839A
Cited
US5289281A
Cited
US5034817A
Cited
US5291275A
Cited
US5140147A
Cited
US5229855A
Cited
US5229853A
Cited
US5233421A
Cited
US5264939A
Cited
US5337089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-20 | 2001-10-20 | 2002-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-20 | 2005-10-20 | 2006-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-20 | 2009-10-20 | 2010-04-21 | $7700.00 | Window Closed / Lapsed |