GB2246935B - An apparatus for the control of an access to a video memory - Google Patents

An apparatus for the control of an access to a video memory

Info

Publication number
GB2246935B
GB2246935B GB9118787A GB9118787A GB2246935B GB 2246935 B GB2246935 B GB 2246935B GB 9118787 A GB9118787 A GB 9118787A GB 9118787 A GB9118787 A GB 9118787A GB 2246935 B GB2246935 B GB 2246935B
Authority
GB
United Kingdom
Prior art keywords
access
control
video memory
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.)
Expired - Lifetime
Application number
GB9118787A
Other versions
GB9118787D0 (en
GB2246935A (en
Inventor
Kimio Yamamura
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.)
Hudson Soft Co Ltd
Original Assignee
Hudson Soft Co Ltd
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
Priority claimed from JP62235483A external-priority patent/JP2610275B2/en
Application filed by Hudson Soft Co Ltd filed Critical Hudson Soft Co Ltd
Priority to GB9118787A priority Critical patent/GB2246935B/en
Publication of GB9118787D0 publication Critical patent/GB9118787D0/en
Publication of GB2246935A publication Critical patent/GB2246935A/en
Application granted granted Critical
Publication of GB2246935B publication Critical patent/GB2246935B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G09G5/001—Arbitration of resources in a display system, e.g. control of access to frame buffer by video controller and/or main processor
    • 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
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/024—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour registers, e.g. to control background, foreground, surface filling
    • 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
    • G09G5/36—Control 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
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/391—Resolution modifying circuits, e.g. variable screen formats
    • 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
    • G09G5/40—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which both a pattern determined by character code and another pattern are displayed simultaneously, or either pattern is displayed selectively, e.g. with character code memory and APA, i.e. all-points-addressable, memory
    • 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
    • G09G5/36—Control 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
    • G09G5/39—Control of the bit-mapped memory
GB9118787A 1987-09-19 1991-09-02 An apparatus for the control of an access to a video memory Expired - Lifetime GB2246935B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9118787A GB2246935B (en) 1987-09-19 1991-09-02 An apparatus for the control of an access to a video memory

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62235483A JP2610275B2 (en) 1987-09-19 1987-09-19 Video memory transfer controller
GB8818787A GB2210238B (en) 1987-09-19 1988-08-08 An apparatus for the control of an access to a video memory
GB9118787A GB2246935B (en) 1987-09-19 1991-09-02 An apparatus for the control of an access to a video memory

Publications (3)

Publication Number Publication Date
GB9118787D0 GB9118787D0 (en) 1991-10-16
GB2246935A GB2246935A (en) 1992-02-12
GB2246935B true GB2246935B (en) 1992-05-20

Family

ID=26294252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9118787A Expired - Lifetime GB2246935B (en) 1987-09-19 1991-09-02 An apparatus for the control of an access to a video memory

Country Status (1)

Country Link
GB (1) GB2246935B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2065979C (en) * 1991-06-10 1999-01-19 Stephen Patrick Thompson Mode dependent minimum fifo fill level controls processor access to video memory

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149788A2 (en) * 1983-12-14 1985-07-31 Ascii Corporation Display control system
EP0155499A2 (en) * 1984-02-20 1985-09-25 Ascii Corporation Display control unite
EP0157254A2 (en) * 1984-03-16 1985-10-09 Ascii Corporation Video display control system
US4800431A (en) * 1984-03-19 1989-01-24 Schlumberger Systems And Services, Inc. Video stream processing frame buffer controller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149788A2 (en) * 1983-12-14 1985-07-31 Ascii Corporation Display control system
EP0155499A2 (en) * 1984-02-20 1985-09-25 Ascii Corporation Display control unite
EP0157254A2 (en) * 1984-03-16 1985-10-09 Ascii Corporation Video display control system
US4800431A (en) * 1984-03-19 1989-01-24 Schlumberger Systems And Services, Inc. Video stream processing frame buffer controller

Also Published As

Publication number Publication date
GB9118787D0 (en) 1991-10-16
GB2246935A (en) 1992-02-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050808