US4637059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video filter for video format unit
Assignee: Bantec Inc
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Filing: 1984-08-13
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Granted: 1987-01-13
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Expires: 2004-08-13
Abstract
Abstract A video filter is provided for use in an image processing system wherein correlated video data is received by the video filter in a cellular format. The filter includes structure for simultaneously filtering at least four cells of the correlated video data.
Inventors
- 👤 Richard K. Habitzreiter
- 👤 Robert V. Pinney, Jr.
- 👤 Tony C. Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:52
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/409; H04N1/4092; G; G06; G06T; G06T9/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
A video filter for use in an image processing system having a video input, a video correlator, and a video compressor, comprising: means for receiving two cells of video data from the video correlator at one time; means for widening said two cells of received video data into four cells of data comprising black cells and white cells; and means for filtering said four cells of data by determining whether there is a minimum density of said black cells or said white cells.
Claim 2
Dependent Claim
83 words
A video filter for use in an image processing system having a video input, a video correlator, and a video compressor, comprising: means for receiving two cells of video data from the video correlator at one time; means for widening said two cells of received video data into four cells of data comprising black cells and white cells; and means for filtering said four cells of data by determining whether there is a minimum density of said black cells or said white cells.
Claim 3
Dependent Claim
104 words
A video filter for use in an image processing system having a video input, a video correlator, and a video compressor, comprising: first memory means for stroking video data comprising white cells and black cells representative of a document scanned by said video input; means for extracting a portion of said video data stored in said first memory representing an image portion of said document; second memory means for storing said extracted portion of said video data; and means for filtering said extracted portion of said video data by determining whether there is a minimum density of said black cells or said white cells.
Claim 4
Dependent Claim
104 words
A video filter for use in an image processing system having a video input, a video correlator, and a video compressor, comprising: first memory means for stroking video data comprising white cells and black cells representative of a document scanned by said video input; means for extracting a portion of said video data stored in said first memory representing an image portion of said document; second memory means for storing said extracted portion of said video data; and means for filtering said extracted portion of said video data by determining whether there is a minimum density of said black cells or said white cells.
Claim 5
Dependent Claim
60 words
The video filter of claim 2, further comprising: means for reading said second memory means containing video data representing an image portion of a first document while storing video data representative of a second document into said first memory means; a video memory; and means for widening said filtered video data into eight-bit bytes for storage in said video memory.
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) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |