US5519451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion adaptive scan-rate conversion using directional edge interpolation
Assignee: Texas Instruments Inc
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Filing: 1994-04-14
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Granted: 1996-05-21
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Expires: 2014-04-14
Abstract
Abstract A method for processing video data to produce a progressively scanned signal from an input of conventional interlaced video. The data is received at a processor (1), used to determine a motion signal (26) over time between field of the data. The motion signal is filtered to reduce errors caused by noise-corrupted video sources and then further filtered to spread out the determined motion signal. Edge information (30) is located and combined with the motion signal to produce an integrated progressive-scan signal (36) for display on a video display device, producing images with sharper edges and motion signals which have a lower susceptibility to noise.
Inventors
- 👤 Todd Clatanoff
- 👤 Vishal Markandey
- 👤 Robert J. Gove
- 👤 Kazuhiro Ohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:14
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0117; H04N7/012
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A system for improved processing of video data, including: a. a circuit for receiving said data; b. a processor within said circuit operable to: i. detect motion and edge signals in said data; ii. filter said motion signal to reduce noise, wherein said filtering is performed by a fast median filter; iii. spread said data through the use of temporal and spatial filters; iv. reduce serrations along moving edges through the use of an edge correlator for directional interpolation; and v. use said filtered motion signal and said edge signals to produce a progressive-scan signal; and c. a display device for receiving and displaying said signal.
Claim 2
Independent Claim
106 words
A system for improved processing of video data, including: a. a circuit for receiving said data; b. a processor within said circuit operable to: i. detect motion and edge signals in said data; ii. filter said motion signal to reduce noise, wherein said filtering is performed by a fast median filter; iii. spread said data through the use of temporal and spatial filters; iv. reduce serrations along moving edges through the use of an edge correlator for directional interpolation; and v. use said filtered motion signal and said edge signals to produce a progressive-scan signal; and c. a display device for receiving and displaying said signal.
Claim 3
Independent Claim
71 words
A method of processing video data, comprising: a. receiving said data into a processor; b. determining a motion signal from said data; c. finding edge information in said data; d. filtering said motion signal; e. passing said edge information and said filtered motion signal to a video processor; and f. using said filtered motion signal and said edge information to produce a progressive-scan signal for use on a video display device.
Claim 4
Independent Claim
71 words
A method of processing video data, comprising: a. receiving said data into a processor; b. determining a motion signal from said data; c. finding edge information in said data; d. filtering said motion signal; e. passing said edge information and said filtered motion signal to a video processor; and f. using said filtered motion signal and said edge information to produce a progressive-scan signal for use on a video display device.
Claim 5
Dependent Claim
16 words
The system as in claim 1 wherein said fast median filter is a 5-tap median filter.
Claim 6
Dependent Claim
14 words
The system as in claim 1 wherein said temporal filter uses said motion signal.
Claim 7
Dependent Claim
22 words
The system as in claim 1 wherein said spatial filter comprises a vertical low pass filter and a horizontal low pass filter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-21 | 1999-11-20 | 2000-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-21 | 2003-11-20 | 2004-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-21 | 2007-11-20 | 2008-05-21 | $7700.00 | Window Closed / Lapsed |