US3692935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single line scan pattern generator
Assignee: Alphanumeric Inc
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Filing: 1971-02-17
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Granted: 1972-09-19
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Expires: 1991-02-17
Abstract
Abstract A pattern generator includes a rotating record-medium-carrying drum which is scanned by an intensity-modulated beam of electromagnetic radiation. The beam sequentially scans adjacent linear regions in a peripheral band of the record medium. The beam is turned on and off during the scans to write characters.
Inventors
- 👤 Solomon Manber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:11
CPC Classifications
H; H04; H04L; H04L21/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A pattern generator comprising a rotatably cylindrical support means for supporting a record medium on the periphery thereof, a source of a beam of energy, means for directing the beam of energy to repetitively scan a same straight line, means for intensity modulating the beam of energy during at least some of said scans, means for projecting the beam of energy toward the periphery of said rotatable cylindrical support means in such a way that the beam of energy scans on said periphery a straight line which is parallel to the axis of rotation of said rotatably cylindrical support means, means for rotating said rotatable cylindrical support means so that said beam of energy sequentially scans parallel straight lines that are laterally displaced from each other on a first peripheral band of said rotatable cylindrical support means and means operative after the scan of said parallel straight lines on said first peripheral band, for causing the beam of energy to scan parallel straight lines that are laterally displaced from each other on another peripheral band axially displaced from said first peripheral band.
Claim 2
Dependent Claim
182 words
A pattern generator comprising a rotatably cylindrical support means for supporting a record medium on the periphery thereof, a source of a beam of energy, means for directing the beam of energy to repetitively scan a same straight line, means for intensity modulating the beam of energy during at least some of said scans, means for projecting the beam of energy toward the periphery of said rotatable cylindrical support means in such a way that the beam of energy scans on said periphery a straight line which is parallel to the axis of rotation of said rotatably cylindrical support means, means for rotating said rotatable cylindrical support means so that said beam of energy sequentially scans parallel straight lines that are laterally displaced from each other on a first peripheral band of said rotatable cylindrical support means and means operative after the scan of said parallel straight lines on said first peripheral band, for causing the beam of energy to scan parallel straight lines that are laterally displaced from each other on another peripheral band axially displaced from said first peripheral band.
Claim 3
Dependent Claim
19 words
The pattern generator of claim 1 wherein said source of a beam of energy comprises a cathode-ray tube means.
Claim 4
Dependent Claim
20 words
The pattern generator of claim 1 wherein said means for intensity modulating the beam of energy comprises binary modulating means.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |