GB1466725A - Creation of Inventions and Patents with Artificial Intelligence

GB1466725A – Video display apparatus
– Google Patents

GB1466725A – Video display apparatus
– Google Patents
Video display apparatus

Info

Publication number
GB1466725A

GB1466725A
GB2182674A
GB2182674A
GB1466725A
GB 1466725 A
GB1466725 A
GB 1466725A
GB 2182674 A
GB2182674 A
GB 2182674A
GB 2182674 A
GB2182674 A
GB 2182674A
GB 1466725 A
GB1466725 A
GB 1466725A
Authority
GB
United Kingdom
Prior art keywords
pulses
amplitude
pulse
output
video
Prior art date
1973-05-19
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

Application number
GB2182674A
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.)

Sony Corp

Original Assignee
Sony 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.)
1973-05-19
Filing date
1974-05-16
Publication date
1977-03-09

1974-05-16
Application filed by Sony Corp
filed
Critical
Sony Corp

1977-03-09
Publication of GB1466725A
publication
Critical
patent/GB1466725A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

G09G3/2007—Display of intermediate tones

G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods

G09G3/2081—Display of intermediate tones by a combination of two or more gradation control methods with combination of amplitude modulation and time modulation

H—ELECTRICITY

H04—ELECTRIC COMMUNICATION TECHNIQUE

H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION

H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages

H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical

H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays

Abstract

1466725 Television SONY CORP 16 May 1974 [19 May 1973] 21826/74 Heading H4F In a television receiver employing a flat panel display of the X-Y matrix type (e.g. incorporating gas-discharge, liquid crystal or electro luminescent elements) the video drive pulse signal are modulated in both width and amplitude as functions of the video signal level. The arrangement, which combines the known methods of width modulation or of amplitude modulation used singly avoids the drawbacks of insufficiently uniform characteristics in driving transistors in the case of amplitude modulation and of the slow response of the panel elements in the case of width modulation. As shown in Fig. 5 (in which only a small portion of the panel 1 is depicted) a synch separator 10 supplied with the output of the video detector 8 (of a television receiver) controls a pulse generator 11 which provides vertical and horizontal frequency pulses S V , S H respectively (see also Fig. 6) as input and as clocking pulses respectively to a shift register 12 which generates drive pulses a 1 , a 2 … a 5 … an, to energize, successively via respective transistors the horizontal row lines X1, X2 … X 5 … X n . The output of the video detector 8 is also fed via a video amplifier 9 to a level detector 13 which provides sixteen discrete output levels t 0 , t 1 … t 15 as inputs to a four-bit binary coder 14. The latter produces an output on lines t A , t B , t C , t D which are respectively connected to multivibrators A 1 , A 2 …A m ,B 1 , B 2 …,B m , C 1 , C 2 …C m and D 1 , D 2 … D m . The multivibrator groups A and B comprise monostable circuits producing, respectively pulses P A and P B (see Fig. 8) of the same predetermined amplitude and of respective durations “.TH and ¢.TH where TH is horizontal period. Similarly the multivibrator groups C and D which comprise bi-stable circuits produce respective pulses P C , P D , the pulse P C having the same amplitude as pulses P A and P B but of duration TH and the pulse P D having twice the amplitude of pulses P A to P C and a duration TH. The output pulses from each “vertical column” of multivibrators, e.g. A 1 , B 1 , C 1 and D 1 (which are binary weighted 1 2 4 8) are combined and fed to the base electrodes of transistors Q1, Q2 … Q m and as the “vertical columns” are successively sampled by gate signals b1, b2 … b m (see also Fig. 7), derived from a shift register 16 supplied with the pulse SH and with timing pulses Ss from generator 15, the column lines Y1, Y2 … Y m are successively energized to produce, at the intersection with the X row lines, light emission having an intensity determined by the amplitude and width of the combined pulse pattern from each “vertical column” of multivibrators. Fig. 9 shows such pulse pattern for each of the sixteen levels 0 … 15 the start of light emission being delayed by about ten microseconds as shown by dotted lines.

GB2182674A
1973-05-19
1974-05-16
Video display apparatus

Expired

GB1466725A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

JP1973059020U

JPS5331698Y2
(en)

1973-05-19
1973-05-19

Publications (1)

Publication Number
Publication Date

GB1466725A
true

GB1466725A
(en)

1977-03-09

Family
ID=13101176
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB2182674A
Expired

GB1466725A
(en)

1973-05-19
1974-05-16
Video display apparatus

Country Status (13)

Country
Link

US
(1)

US4021607A
(en)

JP
(1)

JPS5331698Y2
(en)

AT
(1)

AT349549B
(en)

AU
(1)

AU475478B2
(en)

BR
(1)

BR7404038D0
(en)

CA
(1)

CA1028047A
(en)

DE
(1)

DE2424071C2
(en)

ES
(1)

ES426429A1
(en)

FR
(1)

FR2230138B1
(en)

GB
(1)

GB1466725A
(en)

IT
(1)

IT1019619B
(en)

NL
(1)

NL188007C
(en)

SE
(1)

SE402172B
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2000412A
(en)

1977-06-16
1979-01-04
Sony Corp
Method and apparatus for displaying a video picture on a matrix of light emitting elements

Families Citing this family (44)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

NL7603056A
(en)

1976-03-24
1977-09-27
Philips Nv

TELEVISION DISPLAY DEVICE.

US4097780A
(en)

1976-08-17
1978-06-27
Bell Telephone Laboratories, Incorporated
Method and apparatus for energizing the cells of a plasma display panel to selected brightness levels

NL7903515A
(en)

1979-05-04
1980-11-06
Philips Nv

MODULATOR CIRCUIT FOR A MATRIX DISPLAY DEVICE.

DE2938759A1
(en)

1979-09-25
1981-03-26
Siemens AG, 1000 Berlin und 8000 München

METHOD FOR DRIVING A GAS DISCHARGE DISPLAY DEVICE

DE3026392C2
(en)

1980-02-26
1985-08-22
Sharp K.K., Osaka

Display device with an electroluminescent thin-film element for displaying images

WO1982000557A1
(en)

1980-07-25
1982-02-18
Fukushima N
Display apparatus

GB2094052B
(en)

1981-03-04
1984-08-22
United Technologies Corp
Gray shade operation of a large ac plasma display panel

US4464657A
(en)

1981-06-12
1984-08-07
Interstate Electronics Corp.
Modular waveform generator for plasma display panels

US4414544A
(en)

1981-06-12
1983-11-08
Interstate Electronics Corp.
Constant data rate brightness control for an AC plasma panel

JPS5823090A
(en)

1981-08-03
1983-02-10
株式会社日立製作所
Display

US4455578A
(en)

1982-08-30
1984-06-19
Eastman Kodak Company
Electronics for arrayed photosources

US4554539A
(en)

1982-11-08
1985-11-19
Rockwell International Corporation
Driver circuit for an electroluminescent matrix-addressed display

JPS60158780A
(en)

1984-01-27
1985-08-20
Sony Corp
Display

DE3686428T2
(en)

1985-03-08
1993-01-14
Ascii Corp

DISPLAY CONTROL SYSTEM.

JPS6273294A
(en)

1985-09-27
1987-04-03
カシオ計算機株式会社
Image display unit

SE452386B
(en)

1985-10-07
1987-11-23
Hasselblad Ab Victor

DEVICE FOR APPLIANCES FOR ASTAD COMMANDING OF AN ELECTRIC SIGNAL REPRESENTING A PICTURE

US4934773A
(en)

1987-07-27
1990-06-19
Reflection Technology, Inc.
Miniature video display system

US5196839A
(en)

1988-09-16
1993-03-23
Chips And Technologies, Inc.
Gray scales method and circuitry for flat panel graphics display

JPH04128786A
(en)

1990-09-19
1992-04-30
Sharp Corp
Display device

US5103144A
(en)

1990-10-01
1992-04-07
Raytheon Company
Brightness control for flat panel display

EP0499979A3
(en)

1991-02-16
1993-06-09
Semiconductor Energy Laboratory Co., Ltd.
Electro-optical device

JP2790546B2
(en)

1991-02-28
1998-08-27
三菱電機株式会社

Display device

JP2794499B2
(en)

1991-03-26
1998-09-03
株式会社半導体エネルギー研究所

Method for manufacturing semiconductor device

JP2845303B2
(en)

1991-08-23
1999-01-13
株式会社半導体エネルギー研究所

Semiconductor device and manufacturing method thereof

JP2651972B2
(en)

1992-03-04
1997-09-10
株式会社半導体エネルギー研究所

Liquid crystal electro-optical device

US5877738A
(en)

1992-03-05
1999-03-02
Seiko Epson Corporation
Liquid crystal element drive method, drive circuit, and display apparatus

US5731802A
(en)

1996-04-22
1998-03-24
Silicon Light Machines
Time-interleaved bit-plane, pulse-width-modulation digital display system

US6057809A
(en)

1996-08-21
2000-05-02
Neomagic Corp.
Modulation of line-select times of individual rows of a flat-panel display for gray-scaling

US6211859B1
(en)

1997-03-10
2001-04-03
Chips & Technologies, Llc
Method for reducing pulsing on liquid crystal displays

US6034663A
(en)

1997-03-10
2000-03-07
Chips & Technologies, Llc
Method for providing grey scale images to the visible limit on liquid crystal displays

US6252578B1
(en)

1997-10-07
2001-06-26
Intel Corporation
Method for reducing flicker when displaying processed digital data on video displays having a low refresh rate

JP3049061B1
(en)

1999-02-26
2000-06-05
キヤノン株式会社

Image display device and image display method

US7164405B1
(en)

1998-06-27
2007-01-16
Lg.Philips Lcd Co., Ltd.
Method of driving liquid crystal panel and apparatus

US6172538B1
(en)

1999-01-06
2001-01-09
Chips & Technologies, L.L.C.
Universal pulse synchronizer

JP2000352952A
(en)

1999-04-05
2000-12-19
Canon Inc
Picture forming device

JP4197814B2
(en)

1999-11-12
2008-12-17
シャープ株式会社

LED driving method, LED device and display device

JP2001312246A
(en)

2000-05-01
2001-11-09
Sony Corp
Modulation circuit and image display device using the same

JP4595177B2
(en)

2000-07-25
2010-12-08
日本ビクター株式会社

Matrix type display device

US7019736B2
(en)

2002-03-20
2006-03-28
Hewlett-Packard Development Company, L.P.
Method and apparatus for image display

KR20060002892A
(en)

2003-04-04
2006-01-09
코닌클리케 필립스 일렉트로닉스 엔.브이.
Display device

JP4239892B2
(en)

2003-07-14
2009-03-18
セイコーエプソン株式会社

Electro-optical device, driving method thereof, projection display device, and electronic apparatus

KR20050037639A
(en)

2003-10-20
2005-04-25
엘지전자 주식회사
Energy recovering apparatus

JP4367318B2
(en)

2004-11-08
2009-11-18
セイコーエプソン株式会社

Light source control device, light source control method, and image display device

DE102012105630B4
(en)

2012-06-27
2023-04-20
OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung

Lighting arrangement with lighting device and method for operating a lighting device

Family Cites Families (8)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3627924A
(en)

1969-05-16
1971-12-14
Energy Conversion Devices Inc
Flat screen television system

CA949159A
(en)

1970-06-20
1974-06-11
Teruo Sato
Scanning apparatus for dc el crossed-grid panel

US3803449A
(en)

1971-05-03
1974-04-09
Owens Illinois Inc
Method and apparatus for manipulating discrete discharge in a multiple discharge gaseous discharge panel

US3696393A
(en)

1971-05-10
1972-10-03
Hughes Aircraft Co
Analog display using light emitting diodes

US3752910A
(en)

1971-12-13
1973-08-14
H Lewis
Solid state video reproducing system

JPS4889679A
(en)

1972-02-25
1973-11-22

JPS5345088B2
(en)

1972-12-04
1978-12-04

US3883778A
(en)

1973-12-03
1975-05-13
Hitachi Ltd
Driving apparatus for display element

1973

1973-05-19
JP
JP1973059020U
patent/JPS5331698Y2/ja
not_active
Expired

1974

1974-05-13
US
US05/469,606
patent/US4021607A/en
not_active
Expired – Lifetime

1974-05-16
AU
AU69040/74A
patent/AU475478B2/en
not_active
Expired

1974-05-16
GB
GB2182674A
patent/GB1466725A/en
not_active
Expired

1974-05-16
NL
NLAANVRAGE7406615,A
patent/NL188007C/en
not_active
IP Right Cessation

1974-05-17
ES
ES74426429A
patent/ES426429A1/en
not_active
Expired

1974-05-17
SE
SE7406602A
patent/SE402172B/en
not_active
IP Right Cessation

1974-05-17
CA
CA200,336A
patent/CA1028047A/en
not_active
Expired

1974-05-17
FR
FR7417324A
patent/FR2230138B1/fr
not_active
Expired

1974-05-17
DE
DE2424071A
patent/DE2424071C2/en
not_active
Expired

1974-05-17
IT
IT7422910A
patent/IT1019619B/en
active

1974-05-17
BR
BR4038/74A
patent/BR7404038D0/en
unknown

1974-05-19
AT
AT417274A
patent/AT349549B/en
not_active
IP Right Cessation

Cited By (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2000412A
(en)

1977-06-16
1979-01-04
Sony Corp
Method and apparatus for displaying a video picture on a matrix of light emitting elements

GB2000412B
(en)

1977-06-16
1982-01-27
Sony Corp
Method and apparatus for displaying a video picture on a matrix of light emitting elements

Also Published As

Publication number
Publication date

FR2230138B1
(en)

1977-09-30

FR2230138A1
(en)

1974-12-13

NL7406615A
(en)

1974-11-21

NL188007C
(en)

1992-03-02

AU475478B2
(en)

1976-08-26

DE2424071A1
(en)

1974-12-05

SE402172B
(en)

1978-06-19

JPS5331698Y2
(en)

1978-08-07

AU6904074A
(en)

1975-11-20

ATA417274A
(en)

1978-09-15

DE2424071C2
(en)

1983-05-05

ES426429A1
(en)

1976-07-01

AT349549B
(en)

1979-04-10

BR7404038D0
(en)

1974-12-03

US4021607A
(en)

1977-05-03

NL188007B
(en)

1991-10-01

IT1019619B
(en)

1977-11-30

JPS508819U
(en)

1975-01-29

CA1028047A
(en)

1978-03-14

Contact information