EP0462708A3 - Video random access memory - Google Patents

Video random access memory Download PDF

Info

Publication number
EP0462708A3
EP0462708A3 EP19910304736 EP91304736A EP0462708A3 EP 0462708 A3 EP0462708 A3 EP 0462708A3 EP 19910304736 EP19910304736 EP 19910304736 EP 91304736 A EP91304736 A EP 91304736A EP 0462708 A3 EP0462708 A3 EP 0462708A3
Authority
EP
European Patent Office
Prior art keywords
random access
access memory
video random
video
memory
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
Application number
EP19910304736
Other versions
EP0462708A2 (en
EP0462708B1 (en
Inventor
Roderick Michael Peters West
Todd Williams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0462708A2 publication Critical patent/EP0462708A2/en
Publication of EP0462708A3 publication Critical patent/EP0462708A3/en
Application granted granted Critical
Publication of EP0462708B1 publication Critical patent/EP0462708B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39Control of the bit-mapped memory
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/12Frame memory handling
    • G09G2360/126The frame memory having additional data ports, not inclusive of standard details of the output serial port of a VRAM
EP19910304736 1990-06-19 1991-05-24 Video random access memory Expired - Lifetime EP0462708B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54054690A 1990-06-19 1990-06-19
US540546 1990-06-19

Publications (3)

Publication Number Publication Date
EP0462708A2 EP0462708A2 (en) 1991-12-27
EP0462708A3 true EP0462708A3 (en) 1992-04-22
EP0462708B1 EP0462708B1 (en) 1996-11-27

Family

ID=24155915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910304736 Expired - Lifetime EP0462708B1 (en) 1990-06-19 1991-05-24 Video random access memory

Country Status (3)

Country Link
EP (1) EP0462708B1 (en)
JP (1) JP2744854B2 (en)
DE (1) DE69123291D1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688032A (en) * 1982-06-28 1987-08-18 Tokyo Shibaura Denki Kabushiki Kaisha Image display control apparatus
US4825411A (en) * 1986-06-24 1989-04-25 Mitsubishi Denki Kabushiki Kaisha Dual-port memory with asynchronous control of serial data memory transfer
US4855959A (en) * 1986-07-04 1989-08-08 Nec Corporation Dual port memory circuit
EP0398510A2 (en) * 1989-05-16 1990-11-22 International Business Machines Corporation Video random access memory
EP0427114A2 (en) * 1989-11-07 1991-05-15 Micron Technology, Inc. High speed bit mask register architecture

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162287A (en) * 1984-01-23 1985-08-24 三菱電機株式会社 Access processor for image memory
JPH01112592A (en) * 1987-10-26 1989-05-01 Matsushita Electric Ind Co Ltd Semiconductor storage device
JPH0281397A (en) * 1988-09-19 1990-03-22 Hitachi Ltd Picture memory device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688032A (en) * 1982-06-28 1987-08-18 Tokyo Shibaura Denki Kabushiki Kaisha Image display control apparatus
US4825411A (en) * 1986-06-24 1989-04-25 Mitsubishi Denki Kabushiki Kaisha Dual-port memory with asynchronous control of serial data memory transfer
US4855959A (en) * 1986-07-04 1989-08-08 Nec Corporation Dual port memory circuit
EP0398510A2 (en) * 1989-05-16 1990-11-22 International Business Machines Corporation Video random access memory
EP0427114A2 (en) * 1989-11-07 1991-05-15 Micron Technology, Inc. High speed bit mask register architecture

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WORLD PATENTS INDEX LATEST Week 8942, Derwent Publications Ltd., London, GB; AN 89-308294 ANONYMOUS: "Continuous read row addressable random access memory- has data divided into segments that can be independently loaded into read-out shift register to provide long continuous data stream". EP 91304736030 *
WORLD PATENTS INDEX LATEST Week 8942, Derwent Publications Ltd., London, GB; AN 89-308298 ANONYMOUS: "Row addressable random access memory for video monitor storage, allows serial read-out to begin at arbitrary column location, while retaining column redundancy". *

Also Published As

Publication number Publication date
JP2744854B2 (en) 1998-04-28
DE69123291D1 (en) 1997-01-09
JPH04229485A (en) 1992-08-18
EP0462708A2 (en) 1991-12-27
EP0462708B1 (en) 1996-11-27

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