US4641282A
Expired / Lapsed
US
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Memory system
Assignee: Toshiba Corp
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Filing: 1983-05-24
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Granted: 1987-02-03
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Expires: 2003-05-24
Abstract
Abstract A memory system is used in a display or printing system for displaying or printing a picture pattern by processing picture data obtained by a function generator. The memory system has memory planes for storing picture data, registers provided in one-to-one relationship with the memory planes for latching the picture data read from the memory planes, and arithmetic logic units provided in one-to-one relationship with the memory planes for performing logical operations on the picture data latched in the registers and obtained by the function generator. The memory system also has an operation mode register storing operation mode data. The arithmetic logic units perform logical operations according to the operation mode data supplied from the operation mode register. The results of the operations are simultaneously written into the respective memory planes.
Inventors
- 👤 Shouji Ounuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:13
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/36; G09G5/39; G09G5/393; G09G5/02; G09G5/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
92 words
A memory system comprising: a plurality of memory planes for storing picture data; memory control means for controlling writing and reading data from said plurality of memory planes; a plurality of operation means coupled in one-to-one relationship with said memory planes for performing logical arithmetic operations on data read from said respective memory planes thereby allowing said logical arithmetic operations to be performed on all of said memory planes simultaneously; and a plurality of first register means coupled in one-to-one relationship with said operation means for holding data from said respective planes.
Claim 2
Dependent Claim
92 words
A memory system comprising: a plurality of memory planes for storing picture data; memory control means for controlling writing and reading data from said plurality of memory planes; a plurality of operation means coupled in one-to-one relationship with said memory planes for performing logical arithmetic operations on data read from said respective memory planes thereby allowing said logical arithmetic operations to be performed on all of said memory planes simultaneously; and a plurality of first register means coupled in one-to-one relationship with said operation means for holding data from said respective planes.
Claim 3
Dependent Claim
29 words
A memory system according to claim 1, further comprising second register means for storing data representing a mode of said logical arithmetic operation of said plurality of operation means.
Claim 4
Dependent Claim
26 words
A memory system according to claim 2, wherein one of said operation modes is to draw a new picture pattern represented by newly input picture data.
Claim 5
Dependent Claim
42 words
A memory system according to claim 2, wherein one of said operation modes is to obtain a logical sum of the picture data stored in any memory plane and newly input picture data and representing a new picture pattern to be drawn.
Claim 6
Dependent Claim
42 words
A memory system according to claim 2, wherein one of said operation modes is to obtain a logical product of the picture data stored in any memory plane and picture data newly input and representing a new picture pattern to be drawn.
Claim 7
Dependent Claim
43 words
A memory system according to claim 2, wherein one of said operation modes is to obtain an exclusive logical sum of the picture data stored in any memory plane and picture data newly input and representing a new picture pattern to be drawn.
Claim 8
Dependent Claim
63 words
A memory system according to claim 2, wherein one of said operation modes render those of the picture data stored in any memory plane which correspond to one data state of a new picture pattern as said one data and keeps those of the picture data stored in the memory plane which correspond to another data state of the new picture pattern unmodified.
Claim 9
Dependent Claim
28 words
A memory system according to claim 1, wherein there are three said memory planes, assigned to picture patterns of the three primary colors, red, green and blue, respectively.
Claim 10
Dependent Claim
24 words
A system as in claim 1 wherein said memory control means is a single device which controls all of said plurality of memory planes.
Claim 11
Dependent Claim
89 words
A memory system comprising: a plurality of memory planes for storing picture data; memory control means for controlling writing and reading data from said plurality of memory planes; a plurality of operation means coupled in one-to-one relationship with said memory planes for performing logical arithmetic operations on data read from said respective memory planes thereby allowing said logical arithmetic operations to be performed on all of said memory planes simultaneously; and register means for storing data representing a mode of said arithmetic operation of said plurality of operation means.
Claim 12
Dependent Claim
89 words
A memory system comprising: a plurality of memory planes for storing picture data; memory control means for controlling writing and reading data from said plurality of memory planes; a plurality of operation means coupled in one-to-one relationship with said memory planes for performing logical arithmetic operations on data read from said respective memory planes thereby allowing said logical arithmetic operations to be performed on all of said memory planes simultaneously; and register means for storing data representing a mode of said arithmetic operation of said plurality of operation 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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |