US4053931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enhancement of a video signal produced from information stored in a digital memory
Assignee: ROBOT ACQUISITION CORP
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Filing: 1976-09-02
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Granted: 1977-10-11
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Expires: 1996-09-02
Abstract
Abstract Apparatus for producing a video signal from digitally stored information representing the video signal intensity in each of a plurality of picture element locations within a plurality of scan lines. An analog video signal produced for display from the stored information is blanked during the first half of each picture element location during alternately displayed lines and blanked during the last half of each picture element location during the remaining alternately display lines. This apparatus is used in slow-scan television.
Inventors
- 👤 Joseph Key Hawkins
- 👤 Leo Francis Cavanaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:13
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/12; H04N7/122; H04N3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
Apparatus for producing a video signal from information stored in a digital memory, said stored information representing the video signal intensity in each of a plurality of picture element locations within a plurality of scan lines, comprising, means for producing an analog video signal for display from said stored information, wherein the improvement comprises: means for blanking said analog video signal during the first half of each picture element location during alternately displayed lines and for blanking said analog video signal during the last half of each picture element location during the remaining displayed lines.
Claim 2
Dependent Claim
95 words
Apparatus for producing a video signal from information stored in a digital memory, said stored information representing the video signal intensity in each of a plurality of picture element locations within a plurality of scan lines, comprising, means for producing an analog video signal for display from said stored information, wherein the improvement comprises: means for blanking said analog video signal during the first half of each picture element location during alternately displayed lines and for blanking said analog video signal during the last half of each picture element location during the remaining displayed lines.
Claim 3
Dependent Claim
126 words
A slow-scan television apparatus wherein a video signal is produced for display from information stored at a slow scan rate in a digital memory, said stored information representing the video signal intensity in each of a plurality of picture element locations within a plurality of scan lines, comprising, a digital memory; means for storing said information in said memory at a slow scan rate; means for providing an analog video signal for display from information stored in said digital memory, wherein the improvement comprises; means for blanking said analog video signal during the first half of each picture element location during alternately displayed lines and for blanking said analog video signal during the last half of each picture element location during the remaining alternately displayed lines.
Claim 4
Dependent Claim
126 words
A slow-scan television apparatus wherein a video signal is produced for display from information stored at a slow scan rate in a digital memory, said stored information representing the video signal intensity in each of a plurality of picture element locations within a plurality of scan lines, comprising, a digital memory; means for storing said information in said memory at a slow scan rate; means for providing an analog video signal for display from information stored in said digital memory, wherein the improvement comprises; means for blanking said analog video signal during the first half of each picture element location during alternately displayed lines and for blanking said analog video signal during the last half of each picture element location during the remaining alternately displayed lines.
References Cited (Backward Citations)
US3941921A
Cited
US3982063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |