EP0229986A3 - Cursor circuit for a dual port memory - Google Patents
Cursor circuit for a dual port memory Download PDFInfo
- Publication number
- EP0229986A3 EP0229986A3 EP86117314A EP86117314A EP0229986A3 EP 0229986 A3 EP0229986 A3 EP 0229986A3 EP 86117314 A EP86117314 A EP 86117314A EP 86117314 A EP86117314 A EP 86117314A EP 0229986 A3 EP0229986 A3 EP 0229986A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- dual port
- port memory
- cursor circuit
- cursor
- circuit
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/08—Cursor circuits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/820,487 US4767460A (en) | 1985-01-29 | 1986-01-17 | Cement compositions for cementing of wells enabling gas channelling in the cemented annulus to be inhibited by right-angle setting |
US820487 | 1986-01-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0229986A2 EP0229986A2 (en) | 1987-07-29 |
EP0229986A3 true EP0229986A3 (en) | 1989-12-27 |
EP0229986B1 EP0229986B1 (en) | 1994-03-02 |
Family
ID=25230920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860117314 Expired - Lifetime EP0229986B1 (en) | 1986-01-17 | 1986-12-12 | Cursor circuit for a dual port memory |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0229986B1 (en) |
DE (1) | DE3689691T2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1317041C (en) * | 1987-12-24 | 1993-04-27 | Ncr Corporation | Apparatus for creating a cursor pattern by strips related to individual scan lines |
GB2243521B (en) * | 1990-04-11 | 1993-12-08 | Afe Displays Ltd | Image display system |
GB2252224A (en) * | 1990-12-12 | 1992-07-29 | Apple Computer | Providing an overlay e.g. a cursor, for a computer display |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4566000A (en) * | 1983-02-14 | 1986-01-21 | Prime Computer, Inc. | Image display apparatus and method having virtual cursor |
-
1986
- 1986-12-12 EP EP19860117314 patent/EP0229986B1/en not_active Expired - Lifetime
- 1986-12-12 DE DE19863689691 patent/DE3689691T2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4566000A (en) * | 1983-02-14 | 1986-01-21 | Prime Computer, Inc. | Image display apparatus and method having virtual cursor |
Non-Patent Citations (2)
Title |
---|
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 26, no. 10B, March 1984, pages 5622-5623, New York, US; A.C. GAY: "Cursor display on raster graphic devices" * |
IEEE COMPCON SPRING '85 DIGEST OF PAPERS, San Francisco, California, 25th-28th February 1985, pages 276-279, IEEE, New York, US; K. GUTTAG et al.: "New silicon to solve fundamental graphics problems" * |
Also Published As
Publication number | Publication date |
---|---|
EP0229986B1 (en) | 1994-03-02 |
EP0229986A2 (en) | 1987-07-29 |
DE3689691T2 (en) | 1994-09-15 |
DE3689691D1 (en) | 1994-04-07 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19871202 |
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