GB2287813B - Display apparatus with lockable screen - Google Patents

Display apparatus with lockable screen

Info

Publication number
GB2287813B
GB2287813B GB9405136A GB9405136A GB2287813B GB 2287813 B GB2287813 B GB 2287813B GB 9405136 A GB9405136 A GB 9405136A GB 9405136 A GB9405136 A GB 9405136A GB 2287813 B GB2287813 B GB 2287813B
Authority
GB
United Kingdom
Prior art keywords
display apparatus
lockable
screen
lockable screen
display
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 - Fee Related
Application number
GB9405136A
Other versions
GB9405136D0 (en
GB2287813A (en
Inventor
John Stuart Beeteson
Frederick Samuel Jackson
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
Priority to GB9405136A priority Critical patent/GB2287813B/en
Publication of GB9405136D0 publication Critical patent/GB9405136D0/en
Priority to JP6324619A priority patent/JPH07271334A/en
Publication of GB2287813A publication Critical patent/GB2287813A/en
Application granted granted Critical
Publication of GB2287813B publication Critical patent/GB2287813B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/14—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible
    • G09G1/16—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible the pattern of rectangular co-ordinates extending over the whole area of the screen, i.e. television type raster
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/82—Protecting input, output or interconnection devices
    • G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/14—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible
    • G09G1/16—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible the pattern of rectangular co-ordinates extending over the whole area of the screen, i.e. television type raster
    • G09G1/165—Details of a display terminal using a CRT, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G1/167—Details of the interface to the display terminal specific for a CRT
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Controls And Circuits For Display Device (AREA)
GB9405136A 1994-03-16 1994-03-16 Display apparatus with lockable screen Expired - Fee Related GB2287813B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9405136A GB2287813B (en) 1994-03-16 1994-03-16 Display apparatus with lockable screen
JP6324619A JPH07271334A (en) 1994-03-16 1994-12-27 Wrongful-access prevention display device and computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9405136A GB2287813B (en) 1994-03-16 1994-03-16 Display apparatus with lockable screen

Publications (3)

Publication Number Publication Date
GB9405136D0 GB9405136D0 (en) 1994-04-27
GB2287813A GB2287813A (en) 1995-09-27
GB2287813B true GB2287813B (en) 1997-12-03

Family

ID=10751956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9405136A Expired - Fee Related GB2287813B (en) 1994-03-16 1994-03-16 Display apparatus with lockable screen

Country Status (2)

Country Link
JP (1) JPH07271334A (en)
GB (1) GB2287813B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970076261A (en) * 1996-05-29 1997-12-12 김광호 Integrated password control method of PC and monitor
JP2009110320A (en) * 2007-10-31 2009-05-21 Fujitsu Ltd Display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222287A (en) * 1988-06-30 1990-02-28 Nec Corp Paging receiver preventing unauthorised access to message

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158380A (en) * 1980-05-12 1981-12-07 Chino Works Ltd Display unit
JPH02173785A (en) * 1988-12-27 1990-07-05 Matsushita Electric Ind Co Ltd Display device
JPH05143034A (en) * 1991-11-18 1993-06-11 Nec Eng Ltd Display device
JPH05313772A (en) * 1992-05-14 1993-11-26 Toshiba Syst Kaihatsu Kk Security system for screen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222287A (en) * 1988-06-30 1990-02-28 Nec Corp Paging receiver preventing unauthorised access to message

Also Published As

Publication number Publication date
GB9405136D0 (en) 1994-04-27
JPH07271334A (en) 1995-10-20
GB2287813A (en) 1995-09-27

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Legal Events

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

Effective date: 20020316