US3569951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning and receiving station for graphic symbols
Assignee: MERLIN JEAN CLAUDE
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Filing: 1969-04-02
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Granted: 1971-03-09
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Expires: 1989-04-02
Abstract
Abstract A system for viewing graphic symbols and graphs on the screen of a cathode-ray tube. The graphs are drawn by giving the spot incremental movements along quantified directions or vectors and the incremental advance of the spot is caused by sending to the receiving end of the system binary digit vector words defining the quantified directions. The information relative to the illumination or extinction of the spot is transmitted not by a supplementary bit but by means of a particular combination of two vector words. This combination is a succession of two vector words defining vectors of the same and opposite direction.
Inventors
- 👤 Jean C Lavenir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:01
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/08; G09G1/10; G09G1/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
A system for viewing graphic symbols in which the said symbols are displayed by incremental paths of the spot of a cathode-ray tube, said paths forming vectors of quantified directions defined by binary digit vector words, comprising a cathode-ray viewing storage tube having a grid and deflecting means, a shift register for receiving two successive serial vector words, means for selecting predetermined combinations of pairs of vector words defining functions, means for deriving a function signal from said selection, means for deriving from each of said vector words corresponding to a given direction two component signals proportional to the projections of said direction along two rectangular horizontal and vertical axes, means for applying said two component signals to the horizontal and vertical deflecting means of said storage viewing tube and means for applying said function signal to the extinction grid of said storage viewing tube.
Claim 2
Independent Claim
145 words
A system for viewing graphic symbols in which the said symbols are displayed by incremental paths of the spot of a cathode-ray tube, said paths forming vectors of quantified directions defined by binary digit vector words, comprising a cathode-ray viewing storage tube having a grid and deflecting means, a shift register for receiving two successive serial vector words, means for selecting predetermined combinations of pairs of vector words defining functions, means for deriving a function signal from said selection, means for deriving from each of said vector words corresponding to a given direction two component signals proportional to the projections of said direction along two rectangular horizontal and vertical axes, means for applying said two component signals to the horizontal and vertical deflecting means of said storage viewing tube and means for applying said function signal to the extinction grid of said storage viewing tube.
Claim 3
Independent Claim
169 words
A system for viewing graphic symbols in which the said symbols are displayed by incremental paths of the spot of a cathode-ray tube, said paths forming an even plurality of vectors of quantified directions defined by binary digit vector words, said vectors being opposite by pairs, comprising a cathode-ray viewing storage tube having a grid and deflecting means, a shift register for receiving two successive serial vector words, means for selecting predetermined combinations of pairs of vector words, means for deriving a function signal from said selection when the two vector words of the combination define vectors of the same and opposite direction, means for deriving from each of said vector words corresponding to a given direction two component signals proportional to the projections of sad direction along two rectangular horizontal and vertical axes, mEans for applying said two component signals to the horizontal and vertical deflecting means of said storage viewing tube and means for applying said function signal to the extinction grid of said storage viewing tube.
Claim 4
Independent Claim
169 words
A system for viewing graphic symbols in which the said symbols are displayed by incremental paths of the spot of a cathode-ray tube, said paths forming an even plurality of vectors of quantified directions defined by binary digit vector words, said vectors being opposite by pairs, comprising a cathode-ray viewing storage tube having a grid and deflecting means, a shift register for receiving two successive serial vector words, means for selecting predetermined combinations of pairs of vector words, means for deriving a function signal from said selection when the two vector words of the combination define vectors of the same and opposite direction, means for deriving from each of said vector words corresponding to a given direction two component signals proportional to the projections of sad direction along two rectangular horizontal and vertical axes, mEans for applying said two component signals to the horizontal and vertical deflecting means of said storage viewing tube and means for applying said function signal to the extinction grid of said storage viewing tube.
Claim 5
Dependent Claim
100 words
A system for viewing graphic symbols as set forth in claim 2 in which the incremental paths of the spot form a plurality of eight vectors angularly spaced apart by 45* from each other and are defined successively by vector words of three binary digits from 000 to 111, the two vectors of the four pairs of vectors defined by the pairs of vector words, 000 and 100, 001 and 101, 010 and 110, 011 and 111 being of the same and opposite direction, and the predetermined combinations selected by the selecting means are the same pairs of vector words.
Claim 6
Independent Claim
156 words
A system for viewing graphic symbols in which the said symbols are displayed by incremental paths of the spot of a cathode-ray tube, said paths forming vectors of quantified directions defined by binary digit vector words, comprising a cathode-ray viewing storage tube having a grid and deflecting means, a shift register for receiving two successive serial vector words, means for selecting predetermined combinations of pairs of vector words defining functions, means for deriving a function signal from said selection, means for deriving from each of said vector words corresponding to a given direction two component signals proportional to the projections of said direction along two rectangular horizontal and vertical axes, means for applying said two component signals to the horizontal and vertical deflecting means of said storage viewing tube, means for inhibiting said deflecting means and means for applying said function signal to both the extinction grid of said storage viewing tube and said deflecting means.
Claim 7
Independent Claim
156 words
A system for viewing graphic symbols in which the said symbols are displayed by incremental paths of the spot of a cathode-ray tube, said paths forming vectors of quantified directions defined by binary digit vector words, comprising a cathode-ray viewing storage tube having a grid and deflecting means, a shift register for receiving two successive serial vector words, means for selecting predetermined combinations of pairs of vector words defining functions, means for deriving a function signal from said selection, means for deriving from each of said vector words corresponding to a given direction two component signals proportional to the projections of said direction along two rectangular horizontal and vertical axes, means for applying said two component signals to the horizontal and vertical deflecting means of said storage viewing tube, means for inhibiting said deflecting means and means for applying said function signal to both the extinction grid of said storage viewing tube and said deflecting 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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |