US4924410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display control method and system
Assignee: Hitachi Ltd
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Filing: 1987-02-10
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Granted: 1990-05-08
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Expires: 2007-02-10
Abstract
Abstract A display control system for controlling a plurality of display units and a method therefor. The display control system includes a pattern generator, and a plurality of bit map refresh memories equal in number to the display units. Input data are converted by the pattern generator to bit pattern information which is stored in the bit map refresh memory. The bit pattern information in the bit map refresh memory is read out repeatedly during time period corresponding to said display unit and is displayed on the corresponding display unit.
Inventors
- 👤 Tatsuzo Hamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:07
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/153; G06F3/1423
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
279 words
A display control system for controlling displays on a plurality of display units, said control system comprising: input means for receiving coded information representative of a plurality of displays to be generated; a plurality of screen memories equal in number to the number of displays to be generated; a work memory; first control means responsive to the format of received coded information for applying received coded information having a first format to a selected one of said plurality of screen memories for storage therein, the selected one of said plurality of screen memories being associated with the display unit on which the display represented by that coded information is to be generated, and applying received coded information having a second format to said work memory for storage therein; editing means for editing coded information stored in said work memory and applying the edited coded information to said selected one of said plurality of screen memories for storage therein; a pattern generator connected to said screen memories for converting the coded information stored therein into bit pattern information; a plurality of bit map memories equal in number to the number of displays to be generated, each bit map memory storing as a bit map the bit pattern information of the display to be generated on a corresponding one of the plurality of display units; second control means for controlling application of the bit pattern information from said pattern generating means to said bit map memories; and third control means for controlling application of the stored bit pattern information from each of said bit map memories to the corresponding one of the plurality of display units to generate a display thereon.
Claim 2
Dependent Claim
279 words
A display control system for controlling displays on a plurality of display units, said control system comprising: input means for receiving coded information representative of a plurality of displays to be generated; a plurality of screen memories equal in number to the number of displays to be generated; a work memory; first control means responsive to the format of received coded information for applying received coded information having a first format to a selected one of said plurality of screen memories for storage therein, the selected one of said plurality of screen memories being associated with the display unit on which the display represented by that coded information is to be generated, and applying received coded information having a second format to said work memory for storage therein; editing means for editing coded information stored in said work memory and applying the edited coded information to said selected one of said plurality of screen memories for storage therein; a pattern generator connected to said screen memories for converting the coded information stored therein into bit pattern information; a plurality of bit map memories equal in number to the number of displays to be generated, each bit map memory storing as a bit map the bit pattern information of the display to be generated on a corresponding one of the plurality of display units; second control means for controlling application of the bit pattern information from said pattern generating means to said bit map memories; and third control means for controlling application of the stored bit pattern information from each of said bit map memories to the corresponding one of the plurality of display units to generate a display thereon.
Claim 3
Dependent Claim
17 words
A display control system according to claim 1, wherein said pattern generating means includes a character generator.
Claim 4
Dependent Claim
40 words
A display control system according to claim 1, wherein said third control means includes means for reading out the stored bit pattern information from each of said bit map memories repeatedly during time periods corresponding to said display units, respectively.
Claim 5
Dependent Claim
33 words
A display control system according to claim 1, further comprising a buffer register for storing the contents of one of said bit map memories for subsequent application to a printer for printing thereof.
Claim 6
Dependent Claim
18 words
A display control system according to claim 1 wherein said pattern generating means includes a graphic pattern generator.
Claim 7
Dependent Claim
17 words
A display control system according to claim 1 wherein said pattern generating means includes a vector generator.
Claim 8
Independent Claim
199 words
A method of controlling displays in a display system including a plurality of display units, said method comprising: receiving coded information representative of a plurality of displays to be generated on a plurality of display units equal in number to the number of displays to be generated; storing received coded information having a first format in a selected one of a plurality of screen memories equal in number to the number of displays to be generated, the selected screen memory being associated with the display unit on which the display represented by that received coded information is to be generated; storing received coded information having a second format in a work memory; editing coded information stored in said work memory; storing the edited coded information in said selected one of said plurality of screen memories; converting the coded information stored in said plurality of screen memories into bit pattern information for the plurality of display units; storing the bit pattern information for each of the display units in a corresponding bit map memory; and reading the stored bit pattern information from each of the bit map memories to the corresponding one of the display units to generate displays thereon.
Claim 9
Independent Claim
199 words
A method of controlling displays in a display system including a plurality of display units, said method comprising: receiving coded information representative of a plurality of displays to be generated on a plurality of display units equal in number to the number of displays to be generated; storing received coded information having a first format in a selected one of a plurality of screen memories equal in number to the number of displays to be generated, the selected screen memory being associated with the display unit on which the display represented by that received coded information is to be generated; storing received coded information having a second format in a work memory; editing coded information stored in said work memory; storing the edited coded information in said selected one of said plurality of screen memories; converting the coded information stored in said plurality of screen memories into bit pattern information for the plurality of display units; storing the bit pattern information for each of the display units in a corresponding bit map memory; and reading the stored bit pattern information from each of the bit map memories to the corresponding one of the display units to generate displays thereon.
Claim 10
Dependent Claim
38 words
A display control method according to claim 7, wherein said reading step includes reading out the stored bit pattern information from each of said bit map memories repeatedly during time periods corresponding respectively to said corresponding display units.
References Cited (Backward Citations)
US3500336A
Cited
US3961324A
Cited
US4161777A
Cited
US4071910A
Cited
US4071911A
Cited
US4069511A
Cited
US4379293A
Cited
US4580242A
Cited
US4760388A
Cited
US4684935A
Cited
US4675831A
Cited
GB2147126A
Cited
US4695966A
Cited
JPS60254226A
Cited
US4812998A
Cited
US4704697A
Cited
US4749990A
Cited
US4823286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |