US4110795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of graphic data redundancy reduction in an optical facsimile system
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1976-12-20
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Granted: 1978-08-29
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Expires: 1996-12-20
Abstract
Abstract A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising evaluating at least the first N-2 bit planes to determine whether these bit planes should be processed in high or low resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.
Inventors
- 👤 David R. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:07
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/41
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising evaluating at least the first N-2 bit planes to determine whether these bit planes should be processed in high or low resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.
Claim 2
Independent Claim
68 words
A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising evaluating at least the first N-2 bit planes to determine whether these bit planes should be processed in high or low resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.
Claim 3
Dependent Claim
21 words
A method according to claim 1, wherein N equals 5 and the last bit plane is arbitrarily processed in low resolution.
Claim 4
Dependent Claim
22 words
A method according to claim 1, wherein N equals 5 and the last two bit planes are arbitrarily processed in low resolution.
Claim 5
Dependent Claim
50 words
A method according to claim 1, further comprising determining the number of last bit planes which are to be processed at low resolution by processing all the last bit planes beyond the N-2 bit plane at low resolution if the N-2 or N-1 bit plane is processed at low resolution.
Claim 6
Independent Claim
58 words
A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising arbitrarily processing at least the first N-2 bit planes in high resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.
Claim 7
Independent Claim
58 words
A method of graphic data redundancy reduction in an optical facsimile system wherein picture elements are optically represented by a grey coded number having N digits where N is at least 5 comprising arbitrarily processing at least the first N-2 bit planes in high resolution, and arbitrarily processing the remaining at least one bit plane at low resolution.
Claim 8
Dependent Claim
22 words
A method according to claim 5, wherein N equals 5 and only the last bit plane is arbitrarily processed at low resolution.
Claim 9
Dependent Claim
23 words
A method according to claim 5, wherein N equals 5 and only the last two bit planes are arbitrarily processed at low resolution.
Claim 10
Independent Claim
127 words
A method of data redundancy reduction in an image processing system wherein picture elements are represented by a binary number having N digits, the method comprising arbitrarily processing a first number of bit planes at high resolution starting with the most significant bit planes wherein the first number is zero or more, evaluating a second number of bit planes to determine whether the second number of bit planes should be processed at high or low resolution, wherein the second number is zero or more, wherein after processing a bit plane at low resolution, the balance of subsequent bit planes of said second number is processed at low resolution, and arbitrarily processing a third number of bit planes at low resolution ending with the least significant bit plane.
Claim 11
Independent Claim
127 words
A method of data redundancy reduction in an image processing system wherein picture elements are represented by a binary number having N digits, the method comprising arbitrarily processing a first number of bit planes at high resolution starting with the most significant bit planes wherein the first number is zero or more, evaluating a second number of bit planes to determine whether the second number of bit planes should be processed at high or low resolution, wherein the second number is zero or more, wherein after processing a bit plane at low resolution, the balance of subsequent bit planes of said second number is processed at low resolution, and arbitrarily processing a third number of bit planes at low resolution ending with the least significant bit plane.
References Cited (Backward Citations)
US3849592A
Cited
US4004079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |