Patent US2510059A successfully refreshed from Google Patents.
US4949079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brightpen/pad graphic device for computer inputs and the like
Assignee: Individual
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Filing: 1987-05-07
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Granted: 1990-08-14
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Expires: 2007-05-07
Abstract
Abstract Scanning devices are used to enter graphic information into computer systems. They typically use photo-optic detectors. Digitizing devices are used to enter coordinate positions into computer systems. One technique uses styluses, either fingers or light emitters. This invention shows how the same photo-optical systems can perform both functions.
Inventors
- 👤 Hugh Loebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/042; G06F3/0428
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
An apparatus for digitizing graphic information on sheets of paper and the like comprising means of transporting said sheets of paper, photodetectors and collimators in the form of a detector array capable of imaging successive lines of graphic information on said sheet of paper and which photodetectors are also used to digitize the coordinate position of a light emitting stylus or light absorbing stylus by means for converting analog signals from said photodetectors to digital signals suitable for input into a computer or the like.
Claim 2
Independent Claim
85 words
An apparatus for digitizing graphic information on sheets of paper and the like comprising means of transporting said sheets of paper, photodetectors and collimators in the form of a detector array capable of imaging successive lines of graphic information on said sheet of paper and which photodetectors are also used to digitize the coordinate position of a light emitting stylus or light absorbing stylus by means for converting analog signals from said photodetectors to digital signals suitable for input into a computer or the like.
Claim 3
Dependent Claim
34 words
A graphic apparatus according to claim 1 in which the collimators are a plurality of next adjacent tubes and the detector array is a linear array of photodetectors aligned with, and behind the collimators.
Claim 4
Dependent Claim
15 words
A graphic apparatus according to claim 1 in which the detector array includes a lens.
Claim 5
Dependent Claim
24 words
A graphic apparatus according to claim 1 which uses a single detector array for imaging coordinate position of stylus comprising a plurality of mirrors.
References Cited (Backward Citations)
US3337860A
Cited
US3539995A
Cited
US3613066A
Cited
US3618029A
Cited
US3673579A
Cited
US4078151A
Cited
US4205304A
Cited
US4292621A
Cited
US4464652A
Cited
US4517559A
Cited
US4553842A
Cited
US4550250A
Cited
US4788587A
Cited
US4704698A
Cited
US4707109A
Cited
US4816921A
Cited
US4688933A
Cited
US4743974A
Cited
JPH09232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |