US4601056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video correlator for video format unit
Assignee: Bantec Inc
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Filing: 1984-08-13
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Granted: 1986-07-15
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Expires: 2004-08-13
Abstract
Abstract A video correlator is provided for use in an image processing system wherein video data representative of a document image or portions thereof is received in a gray level data format in which the image is composed of a plurality of cells for enhancing the black/white characterization of each cell. The correlator includes structure for comparing a cell's gray level data with the average gray level of a preselected number of surrounding cells. Structure is also provided for automatically selecting the number of surrounding cells for determining the average gray level.
Inventors
- 👤 Richard K. Habitzreiter
- 👤 Robert V. Pinney, Jr.
- 👤 Rodney K. Guthmueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:51
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/403; G; G06; G06T; G06T5/00; G06T5/20; G06T2207/00; G06T2207/10; G06T2207/10016
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A video correlator for use in an image processing system wherein video data representative of a document image or portions thereof is received in a gray level data format in which the image is composed of a plurality of cells for enhancing the black/white characterization of each cell, comprising: means for comparing a cell's gray level data with the average gray level of a preselected number of surrounding cells; and means for automatically selecting the number of surrounding cells for determining the average gray level.
Claim 2
Dependent Claim
85 words
A video correlator for use in an image processing system wherein video data representative of a document image or portions thereof is received in a gray level data format in which the image is composed of a plurality of cells for enhancing the black/white characterization of each cell, comprising: means for comparing a cell's gray level data with the average gray level of a preselected number of surrounding cells; and means for automatically selecting the number of surrounding cells for determining the average gray level.
Claim 3
Dependent Claim
35 words
The video correlator of claim 1 and further including: means for simultaneously comparing at least two cell's gray level data with the average gray level of a preselected number of cells surrounding said two cells.
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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |