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GB2020875A - Improvements in or Relating to Addressable Matrices - Google Patents

Improvements in or Relating to Addressable Matrices

Info

Publication number
GB2020875A
GB2020875A GB7913275A GB7913275A GB2020875A GB 2020875 A GB2020875 A GB 2020875A GB 7913275 A GB7913275 A GB 7913275A GB 7913275 A GB7913275 A GB 7913275A GB 2020875 A GB2020875 A GB 2020875A
Authority
GB
United Kingdom
Prior art keywords
row
elements
addressable
register
column
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
GB7913275A
Other versions
GB2020875B (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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB7913275A priority Critical patent/GB2020875B/en
Publication of GB2020875A publication Critical patent/GB2020875A/en
Application granted granted Critical
Publication of GB2020875B publication Critical patent/GB2020875B/en
Expired 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
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

An addressable matrix consists of an array 9 of addressable elements, e.g. liquid crystal, which are defined by the crossing regions of row 8 and column 10 electrodes. The state of an addressable element, dependent on on the rms potential across the element, is related to the magnitude of electrical signals applied to row and column electrodes and to the number of elements in the matrix. The magnitude of the electric signals is modified according to the number of elements in the matrix which are currently being addressed to be in the ON state, allowing the operating margin between ON and OFF potentials to be maximized. N columns are scanned, being energized in succession while the states of the N elements displayed in each row are prestored and circulated in a register 3 for that row. A count 4 of ON elements in each register, i.e. 1 bits, determines via a circuit 5 the voltage levels for ON and OFF to be applied to the row electrode at 6 according to each bit in the register, operating selector 7 as each column in turn is scanned. <IMAGE>
GB7913275A 1978-05-03 1979-04-17 Addressable matrices Expired GB2020875B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7913275A GB2020875B (en) 1978-05-03 1979-04-17 Addressable matrices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1734778 1978-05-03
GB7913275A GB2020875B (en) 1978-05-03 1979-04-17 Addressable matrices

Publications (2)

Publication Number Publication Date
GB2020875A true GB2020875A (en) 1979-11-21
GB2020875B GB2020875B (en) 1982-03-03

Family

ID=26252626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7913275A Expired GB2020875B (en) 1978-05-03 1979-04-17 Addressable matrices

Country Status (1)

Country Link
GB (1) GB2020875B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187347A3 (en) * 1985-01-08 1989-11-15 Hewlett-Packard Company Driver circuit for electroluminescent display
WO1994008330A1 (en) * 1992-09-30 1994-04-14 Citizen Watch Co., Ltd. Liquid-crystal display device
EP0303510B1 (en) * 1987-08-13 1994-10-26 Seiko Epson Corporation Liquid crystal display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187347A3 (en) * 1985-01-08 1989-11-15 Hewlett-Packard Company Driver circuit for electroluminescent display
EP0303510B1 (en) * 1987-08-13 1994-10-26 Seiko Epson Corporation Liquid crystal display device
WO1994008330A1 (en) * 1992-09-30 1994-04-14 Citizen Watch Co., Ltd. Liquid-crystal display device

Also Published As

Publication number Publication date
GB2020875B (en) 1982-03-03

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Legal Events

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