GB2022969A - Video display control apparatus - Google Patents

Video display control apparatus

Info

Publication number
GB2022969A
GB2022969A GB7924218A GB7924218A GB2022969A GB 2022969 A GB2022969 A GB 2022969A GB 7924218 A GB7924218 A GB 7924218A GB 7924218 A GB7924218 A GB 7924218A GB 2022969 A GB2022969 A GB 2022969A
Authority
GB
United Kingdom
Prior art keywords
row
column
counter
display
display 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
GB7924218A
Other versions
GB2022969B (en
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.)
DATA RECALL Ltd
Original Assignee
DATA RECALL 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 to GB1440078 priority Critical
Application filed by DATA RECALL Ltd filed Critical DATA RECALL Ltd
Priority to GB7924218A priority patent/GB2022969B/en
Publication of GB2022969A publication Critical patent/GB2022969A/en
Application granted granted Critical
Publication of GB2022969B publication Critical patent/GB2022969B/en
Expired 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
    • G09G5/34Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators for rolling or scrolling
    • G09G5/343Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators for rolling or scrolling for systems having a character code-mapped display memory

Abstract

Video display control apparatus for a visual display device (11, Fig. 1, not shown) employing a television- type raster in a word processor has a display memory (13), a column counter 25 and a row counter 28 adapted to address the display memory. Each location of the display memory has an address comprising a column number and a row number. A clock oscillator (18) and a timing chain (19) produce raster timing signals and column and row timing signals. The count in the column counter 25 tracks the line being scanned, and the count in the row counter tracks successive groups of lines in the raster. The display data output of the display memory controls a character matrix memory (15) acting through a parallel-to-serial converter (16) to cause alphanumeric characters to be displayed in rows by the display device. So that the information display by the display device can be varied in a convenient manner, the row counter 28 is coupled to the display memory 13 through a random access memory 30 which stores information from a central processor unit (14). This stored information determines which set of sequential row addresses shall be supplied to the display memory as the row counter 28 carries out its counting sequence, and includes an instruction associated with a selected row address which causes a reset signal 31 to be supplied to the column counter 25 so that for this row the characters displayed start at the character stored in the first column of locations in the display memory, the column addresses generated by the column counter 25 being otherwise selectable as any set formed by a predetermined number of consecutive column addresses for alphanumeric character locations in the display memory. <IMAGE>
GB7924218A 1978-04-12 1979-07-11 Video display control apparatus Expired GB2022969B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1440078 1978-04-12
GB7924218A GB2022969B (en) 1978-04-12 1979-07-11 Video display control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7924218A GB2022969B (en) 1978-04-12 1979-07-11 Video display control apparatus

Publications (2)

Publication Number Publication Date
GB2022969A true GB2022969A (en) 1979-12-19
GB2022969B GB2022969B (en) 1982-06-09

Family

ID=26250537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7924218A Expired GB2022969B (en) 1978-04-12 1979-07-11 Video display control apparatus

Country Status (1)

Country Link
GB (1) GB2022969B (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031011A2 (en) * 1979-12-20 1981-07-01 International Business Machines Corporation Cathode ray tube display apparatus
US7664708B2 (en) 1994-11-23 2010-02-16 Contentguard Holdings, Inc. System for controlling the distribution and use of digital works using digital tickets
US7685642B2 (en) 2003-06-26 2010-03-23 Contentguard Holdings, Inc. System and method for controlling rights expressions by stakeholders of an item
US7720767B2 (en) 2005-10-24 2010-05-18 Contentguard Holdings, Inc. Method and system to support dynamic rights and resources sharing
US7725401B2 (en) 2001-05-31 2010-05-25 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US7743259B2 (en) 2000-08-28 2010-06-22 Contentguard Holdings, Inc. System and method for digital rights management using a standard rendering engine
US7765403B2 (en) 1997-02-28 2010-07-27 Contentguard Holdings, Inc. System for controlling the distribution and use of rendered digital works through watermarking
US7774279B2 (en) 2001-05-31 2010-08-10 Contentguard Holdings, Inc. Rights offering and granting
US7774280B2 (en) 2001-06-07 2010-08-10 Contentguard Holdings, Inc. System and method for managing transfer of rights using shared state variables
US7805371B2 (en) 2002-03-14 2010-09-28 Contentguard Holdings, Inc. Rights expression profile system and method
US7809644B2 (en) 1994-11-23 2010-10-05 Contentguard Holdings, Inc. Digital work structure
US7840488B2 (en) 2001-11-20 2010-11-23 Contentguard Holdings, Inc. System and method for granting access to an item or permission to use an item based on configurable conditions
US7853531B2 (en) 2001-06-07 2010-12-14 Contentguard Holdings, Inc. Method and apparatus for supporting multiple trust zones in a digital rights management system
US7907749B2 (en) 2000-12-29 2011-03-15 Contentguard Holdings, Inc. Multi-stage watermarking process and system
US7913095B2 (en) 2000-08-28 2011-03-22 Contentguard Holdings, Inc. Method and apparatus for providing a specific user interface in a system for managing content
US7974923B2 (en) 2001-11-20 2011-07-05 Contentguard Holdings, Inc. Extensible rights expression processing system
US8001053B2 (en) 2001-05-31 2011-08-16 Contentguard Holdings, Inc. System and method for rights offering and granting using shared state variables
US8069116B2 (en) 2001-01-17 2011-11-29 Contentguard Holdings, Inc. System and method for supplying and managing usage rights associated with an item repository
US8099364B2 (en) 2001-05-31 2012-01-17 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8108313B2 (en) 2002-03-14 2012-01-31 Contentguard Holdings, Inc. Rights expression profile system and method using templates
US8244579B2 (en) 2001-01-17 2012-08-14 Contentguard Holdings, Inc. Method and apparatus for distributing enforceable property rights
US8271350B2 (en) 2000-11-03 2012-09-18 Contentguard Holdings, Inc. Method and system for automatically publishing content
US8275709B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8275716B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Method and system for subscription digital rights management
US8442916B2 (en) 2001-05-31 2013-05-14 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8543511B2 (en) 2002-04-29 2013-09-24 Contentguard Holdings, Inc. System and method for specifying and processing legality expressions
US8660961B2 (en) 2004-11-18 2014-02-25 Contentguard Holdings, Inc. Method, system, and device for license-centric content consumption
US8869293B2 (en) 2001-05-31 2014-10-21 Contentguard Holdings, Inc. Method and apparatus for hierarchical assignment of rights to documents and documents having such rights
US9898715B2 (en) 2001-11-20 2018-02-20 Contentguart Holdings, Inc. Systems and methods for creating, manipulating and processing rights and contract expressions using tokenized templates

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031011A3 (en) * 1979-12-20 1982-03-31 International Business Machines Corporation Cathode ray tube display apparatus
EP0031011A2 (en) * 1979-12-20 1981-07-01 International Business Machines Corporation Cathode ray tube display apparatus
US7788182B2 (en) 1994-11-23 2010-08-31 Contentguard Holdings, Inc. Method for loaning digital works
US7664708B2 (en) 1994-11-23 2010-02-16 Contentguard Holdings, Inc. System for controlling the distribution and use of digital works using digital tickets
US9953328B2 (en) 1994-11-23 2018-04-24 Contentguard Holdings, Inc. Method and system for conducting transactions between repositories
US7970709B2 (en) 1994-11-23 2011-06-28 Contentguard Holdings, Inc. Method and apparatus for client customization by executing software parts on plural servers
US7809644B2 (en) 1994-11-23 2010-10-05 Contentguard Holdings, Inc. Digital work structure
US8170955B2 (en) 1994-11-23 2012-05-01 Contentguard Holdings, Inc. System and method for enforcing usage rights associated with digital content
US7765403B2 (en) 1997-02-28 2010-07-27 Contentguard Holdings, Inc. System for controlling the distribution and use of rendered digital works through watermarking
US8205089B2 (en) 1997-02-28 2012-06-19 Contentguard Holdings, Inc. System for controlling the distribution and use of rendered digital works through watermarking
US7743259B2 (en) 2000-08-28 2010-06-22 Contentguard Holdings, Inc. System and method for digital rights management using a standard rendering engine
US8832852B2 (en) 2000-08-28 2014-09-09 Contentguard Holdings, Inc. Method and apparatus for dynamic protection of static and dynamic content
US7913095B2 (en) 2000-08-28 2011-03-22 Contentguard Holdings, Inc. Method and apparatus for providing a specific user interface in a system for managing content
US8489900B2 (en) 2000-08-28 2013-07-16 Contentguard Holdings, Inc. Method and apparatus for providing a specific user interface in a system for managing content
US8271350B2 (en) 2000-11-03 2012-09-18 Contentguard Holdings, Inc. Method and system for automatically publishing content
US7907749B2 (en) 2000-12-29 2011-03-15 Contentguard Holdings, Inc. Multi-stage watermarking process and system
US8069116B2 (en) 2001-01-17 2011-11-29 Contentguard Holdings, Inc. System and method for supplying and managing usage rights associated with an item repository
US8244579B2 (en) 2001-01-17 2012-08-14 Contentguard Holdings, Inc. Method and apparatus for distributing enforceable property rights
US7725401B2 (en) 2001-05-31 2010-05-25 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US8001053B2 (en) 2001-05-31 2011-08-16 Contentguard Holdings, Inc. System and method for rights offering and granting using shared state variables
US8862517B2 (en) 2001-05-31 2014-10-14 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8869293B2 (en) 2001-05-31 2014-10-21 Contentguard Holdings, Inc. Method and apparatus for hierarchical assignment of rights to documents and documents having such rights
US8468098B2 (en) 2001-05-31 2013-06-18 Contentguard Holdings, Inc. Method and system for subscription digital rights management
US8442916B2 (en) 2001-05-31 2013-05-14 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US7774279B2 (en) 2001-05-31 2010-08-10 Contentguard Holdings, Inc. Rights offering and granting
US8892473B2 (en) 2001-05-31 2014-11-18 Contentguard Holdings, Inc. Method and system for subscription digital rights management
US8099364B2 (en) 2001-05-31 2012-01-17 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8275709B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8412644B2 (en) 2001-05-31 2013-04-02 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US8275716B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Method and system for subscription digital rights management
US7774280B2 (en) 2001-06-07 2010-08-10 Contentguard Holdings, Inc. System and method for managing transfer of rights using shared state variables
US7853531B2 (en) 2001-06-07 2010-12-14 Contentguard Holdings, Inc. Method and apparatus for supporting multiple trust zones in a digital rights management system
US7974923B2 (en) 2001-11-20 2011-07-05 Contentguard Holdings, Inc. Extensible rights expression processing system
US7840488B2 (en) 2001-11-20 2010-11-23 Contentguard Holdings, Inc. System and method for granting access to an item or permission to use an item based on configurable conditions
US9898715B2 (en) 2001-11-20 2018-02-20 Contentguart Holdings, Inc. Systems and methods for creating, manipulating and processing rights and contract expressions using tokenized templates
US9626668B2 (en) 2002-03-14 2017-04-18 Contentgaurd Holdings, Inc. Rights expression profile system and method using templates
US8108313B2 (en) 2002-03-14 2012-01-31 Contentguard Holdings, Inc. Rights expression profile system and method using templates
US7805371B2 (en) 2002-03-14 2010-09-28 Contentguard Holdings, Inc. Rights expression profile system and method
US8543511B2 (en) 2002-04-29 2013-09-24 Contentguard Holdings, Inc. System and method for specifying and processing legality expressions
US7685642B2 (en) 2003-06-26 2010-03-23 Contentguard Holdings, Inc. System and method for controlling rights expressions by stakeholders of an item
US8660961B2 (en) 2004-11-18 2014-02-25 Contentguard Holdings, Inc. Method, system, and device for license-centric content consumption
US8768850B2 (en) 2004-11-18 2014-07-01 Contentguard Holdings, Inc. Method, system, and device for license-centric content consumption
US7720767B2 (en) 2005-10-24 2010-05-18 Contentguard Holdings, Inc. Method and system to support dynamic rights and resources sharing

Also Published As

Publication number Publication date
GB2022969B (en) 1982-06-09

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Legal Events

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