US4282550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital magnification system
Assignee: Northrop Grumman Corp
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Filing: 1979-11-27
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Granted: 1981-08-04
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Expires: 1999-11-27
Abstract
Abstract A system for magnifying a selected portion of a digital image as disclosed. The portion of the image to be magnified is selected and then each digital sample comprising the portion to be magnified is repeated in both the horizontal and the vertical direction to expand the selected portion of the image.
Inventors
- 👤 John W. Coviello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:20
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/2628
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
A digital magnification system for a scanned image, comprising in combination: (a) first counter means responsive to a horizontal synchronizing signal and a high speed clock signal to generate a first time gate defining the horizontal portion of each line of said scanned image; (b) second counter means responsive to synchronizing signals to generate a second time gate defining a selected number of scan lines of said scanned image; (c) memory means for receiving and storing data samples in response to said first and second time gates said data samples corresponding to a selected portion of said scanned image; and (d) circuit means for controlling said memory means to repeatedly read said stored data samples to produce a magnified image of a selected portion of said scanned image.
Claim 2
Dependent Claim
128 words
A digital magnification system for a scanned image, comprising in combination: (a) first counter means responsive to a horizontal synchronizing signal and a high speed clock signal to generate a first time gate defining the horizontal portion of each line of said scanned image; (b) second counter means responsive to synchronizing signals to generate a second time gate defining a selected number of scan lines of said scanned image; (c) memory means for receiving and storing data samples in response to said first and second time gates said data samples corresponding to a selected portion of said scanned image; and (d) circuit means for controlling said memory means to repeatedly read said stored data samples to produce a magnified image of a selected portion of said scanned image.
Claim 3
Dependent Claim
29 words
A system in accordance with claim 1 further including delay means to initiate said first counter means a predetermined time interval following each pulse of the horizontal synchronizing signal.
Claim 4
Dependent Claim
31 words
A system in accordance with claim 1 further including delay means for initiating said second time gate a predetermined number of lines of said scanned image after said vertical synchronizing pulse.
Claim 5
Dependent Claim
26 words
A system in accordance with claim 1 wherein said memory means has sufficient storage space for storing 64 samples of 64 lines of said scanned image.
Claim 6
Dependent Claim
27 words
A system in accordance with claim 1 wherein said circuit means includes a recirculating shift register for repeating data samples stored therein a predetermined number of times.
Claim 7
Dependent Claim
20 words
A system in accordance with claim 5 wherein the data stored in said recirculating shift register is repeated 64 times.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |