FR2258064A1 - Graphic display system using point diagrams - uses series of bistable memory elements, detectors and computer - Google Patents
Graphic display system using point diagrams - uses series of bistable memory elements, detectors and computerInfo
- Publication number
- FR2258064A1 FR2258064A1 FR7335721A FR7335721A FR2258064A1 FR 2258064 A1 FR2258064 A1 FR 2258064A1 FR 7335721 A FR7335721 A FR 7335721A FR 7335721 A FR7335721 A FR 7335721A FR 2258064 A1 FR2258064 A1 FR 2258064A1
- Authority
- FR
- France
- Prior art keywords
- detectors
- memory
- display system
- graphic display
- memory elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/40093—Modification of content of picture, e.g. retouching
Abstract
The graphic display system displays characters on a c.r.t. screen by modulating the electron beam to give black or white squares on the screen. The memory circuit contains a given number of bistable elements (1 to 96). A circuit (102) connected to the memory elements is able to shift points in the memory in synchronisation with a clock generator. Detectors (97-99, 104) are coupled to the memory and form an output signal when the points to the right, to the left, above and below are in states determined as a function of characteristics of the point diagrams. A comparator (100), coupled to the memory and to be detectors, produces the reconstructed character by logically combining the detectors' outputs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7335721A FR2258064A1 (en) | 1973-10-05 | 1973-10-05 | Graphic display system using point diagrams - uses series of bistable memory elements, detectors and computer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7335721A FR2258064A1 (en) | 1973-10-05 | 1973-10-05 | Graphic display system using point diagrams - uses series of bistable memory elements, detectors and computer |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2258064A1 true FR2258064A1 (en) | 1975-08-08 |
FR2258064B1 FR2258064B1 (en) | 1978-10-27 |
Family
ID=9126004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7335721A Granted FR2258064A1 (en) | 1973-10-05 | 1973-10-05 | Graphic display system using point diagrams - uses series of bistable memory elements, detectors and computer |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2258064A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2391611A1 (en) * | 1977-05-16 | 1978-12-15 | Ricoh Kk | FAC-SIMILE TRANSCEIVER |
EP0075470A2 (en) * | 1981-09-21 | 1983-03-30 | Xerox Corporation | Electronic image processing system |
EP0194689A2 (en) * | 1985-03-15 | 1986-09-17 | Tektronix, Inc. | Method and apparatus for input picture enhancement by removal of undesired dots and voids |
-
1973
- 1973-10-05 FR FR7335721A patent/FR2258064A1/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2391611A1 (en) * | 1977-05-16 | 1978-12-15 | Ricoh Kk | FAC-SIMILE TRANSCEIVER |
EP0075470A2 (en) * | 1981-09-21 | 1983-03-30 | Xerox Corporation | Electronic image processing system |
EP0075470A3 (en) * | 1981-09-21 | 1986-03-19 | Xerox Corporation | Electronic image processing system |
EP0194689A2 (en) * | 1985-03-15 | 1986-09-17 | Tektronix, Inc. | Method and apparatus for input picture enhancement by removal of undesired dots and voids |
EP0194689A3 (en) * | 1985-03-15 | 1989-12-06 | Tektronix, Inc. | Method and apparatus for input picture enhancement by removal of undesired dots and voids |
Also Published As
Publication number | Publication date |
---|---|
FR2258064B1 (en) | 1978-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |