BRPI0803562A2 - video player - Google Patents

video player

Info

Publication number
BRPI0803562A2
BRPI0803562A2 BRPI0803562A BRPI0803562A2 BR PI0803562 A2 BRPI0803562 A2 BR PI0803562A2 BR PI0803562 A BRPI0803562 A BR PI0803562A BR PI0803562 A2 BRPI0803562 A2 BR PI0803562A2
Authority
BR
Brazil
Prior art keywords
amount
apl
video signal
change
changes
Prior art date
Application number
Other languages
Portuguese (pt)
Inventor
Kohichi Takaku
Tetsuo Ikeyama
Hideto Yagisawa
Original Assignee
Sharp Kk
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 Sharp Kk filed Critical Sharp Kk
Publication of BRPI0803562A2 publication Critical patent/BRPI0803562A2/en

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
    • G09G3/3406—Control of illumination source
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0653—Controlling or limiting the speed of brightness adjustment of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Liquid Crystal (AREA)

Abstract

APARELHO EXIBIDOR DE VìDEO. A presente invenção refere-se a um aparelho exibidor de vídeo que é provido, o qual pode mudar a taxa de modulação de luz de uma fonte de iluminação traseira de acordo com as mudanças em uma quantidade indicativa de um sinal de vídeo de entrada com base em uma diferença entre os tempos requeridos para a adaptação a luz e adaptação ao escuro. Um aparelho exibidor de vídeo inclui um painel de cristal líquido que exibe um sinal de vídeo de entrada, uma fonte de iluminação traseira que aplica luz ao painel de cristal líquido, uma parte de detecção de APL que detecta APL do sinal de vídeo de entrada e um microcomputador de controle que controla de modo variável uma quantidade de mudança da luminância de emissão da fonte de iluminação traseira para cada tempo predeterminado com base no APL detectado. O microcomputador de controle realiza o controle de tal modo que a quantidade de mudança para APL do sinal de vídeo de entrada que muda para uma quantidade maior torna-se maior do que a quantidade de mudança para o APL do sinal de vídeo de entrada que muda para uma quantidade inferior.VIDEO DISPLAY. The present invention relates to a video display apparatus which is provided which can change the light modulation rate of a rear light source according to changes in an indicative amount of an input based video signal. in a difference between the times required for light adaptation and dark adaptation. A video display apparatus includes a liquid crystal display panel that displays an input video signal, a rear light source that applies light to the liquid crystal panel, an APL detection portion that detects APL of the input video signal, and a control microcomputer that variably controls an amount of change in the backlight source emission luminance for each predetermined time based on the detected APL. The control microcomputer performs the control such that the amount of change to APL of the incoming video signal that changes to a larger amount becomes greater than the amount of change to APL of the incoming video signal that changes. for a lower amount.

BRPI0803562 2007-09-28 2008-09-26 video player BRPI0803562A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007253684A JP2009086133A (en) 2007-09-28 2007-09-28 Video display apparatus

Publications (1)

Publication Number Publication Date
BRPI0803562A2 true BRPI0803562A2 (en) 2009-06-02

Family

ID=40056181

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0803562 BRPI0803562A2 (en) 2007-09-28 2008-09-26 video player

Country Status (4)

Country Link
EP (1) EP2043079A3 (en)
JP (1) JP2009086133A (en)
CN (1) CN101399011B (en)
BR (1) BRPI0803562A2 (en)

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JP2011013422A (en) * 2009-07-01 2011-01-20 Mitsubishi Electric Corp Image quality adjusting apparatus
JP5516583B2 (en) * 2009-07-16 2014-06-11 富士通株式会社 Display device and control method
US8588576B2 (en) 2010-02-26 2013-11-19 Sharp Kabushiki Kaisha Content reproduction device, television receiver, content reproduction method, content reproduction program, and recording medium
JP5562931B2 (en) * 2010-02-26 2014-07-30 シャープ株式会社 Content reproduction apparatus, television receiver, content reproduction method, content reproduction program, and recording medium
CN103377636B (en) * 2010-05-25 2015-06-17 友达光电股份有限公司 Method for regulating back light brightness
CN101859546B (en) * 2010-05-25 2013-06-19 友达光电股份有限公司 Method for adjusting brightness of backlight source
JP2012013858A (en) * 2010-06-30 2012-01-19 Fujitsu Ten Ltd Display control device, display device and display control method
JP5270730B2 (en) * 2011-08-03 2013-08-21 シャープ株式会社 Video display device
WO2013054728A1 (en) 2011-10-11 2013-04-18 ソニー株式会社 Head-mounted display and display control method
JP6051605B2 (en) 2012-06-13 2016-12-27 ソニー株式会社 Display device, display control method, and program
JP6261240B2 (en) * 2013-09-04 2018-01-17 キヤノン株式会社 Image processing apparatus and control method thereof
JP6516302B2 (en) * 2014-09-22 2019-05-22 Ｎｅｃディスプレイソリューションズ株式会社 Image display apparatus and light source light control method
JP6479401B2 (en) * 2014-10-14 2019-03-06 シャープ株式会社 Display device, control method of display device, and control program
JP2016090773A (en) * 2014-11-04 2016-05-23 株式会社ソニー・コンピュータエンタテインメント Head-mounted display and brightness adjustment method
KR102399669B1 (en) 2015-10-15 2022-05-19 삼성전자주식회사 Device and method to adjust brightness of display
CN105657301B (en) 2016-02-22 2019-06-11 深圳市华星光电技术有限公司 Show the method and device of image
JP6758891B2 (en) * 2016-04-11 2020-09-23 キヤノン株式会社 Image display device and image display method
CN106128372A (en) * 2016-09-14 2016-11-16 广州创维平面显示科技有限公司 The control method of a kind of direct-light-type backlight, control system and LCD TV
JP7064889B2 (en) * 2018-01-16 2022-05-11 株式会社ジャパンディスプレイ Display device
JP7114993B2 (en) * 2018-03-30 2022-08-09 株式会社リコー DISPLAY DEVICE, DISPLAY SYSTEM, MOBILE, DISPLAY BRIGHTNESS CONTROL METHOD AND PROGRAM
JP6746855B2 (en) 2018-09-28 2020-08-26 エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ Imaging device, control method, and program

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JPH05127608A (en) 1991-11-01 1993-05-25 Canon Inc Liquid crystal display device
JPH0619444A (en) * 1992-07-02 1994-01-28 Hitachi Ltd Information processor
JP2751847B2 (en) * 1993-12-28 1998-05-18 日本電気株式会社 Display device
JP3215400B1 (en) * 1999-05-10 2001-10-02 松下電器産業株式会社 Image display device and image display method
JP4574057B2 (en) * 2000-05-08 2010-11-04 キヤノン株式会社 Display device
JP3495362B2 (en) * 2001-04-25 2004-02-09 松下電器産業株式会社 Image display device and image display method
JP2002357810A (en) * 2001-05-31 2002-12-13 Matsushita Electric Ind Co Ltd Video display device and its method
AU2002362202A1 (en) * 2002-03-07 2003-09-16 Sharp Kabushiki Kaisha Display apparatus
JP2004004532A (en) * 2002-03-25 2004-01-08 Sharp Corp Video display device
JP4250978B2 (en) * 2003-03-03 2009-04-08 ヤマハ株式会社 projector
WO2005022925A1 (en) * 2003-08-28 2005-03-10 Koninklijke Philips Electronics N.V. Method and system for controlling dynamic contrast for in a display system
JP4619160B2 (en) * 2005-03-17 2011-01-26 シャープ株式会社 Image display device and image display method
JP2006285064A (en) * 2005-04-04 2006-10-19 Matsushita Electric Ind Co Ltd Image display apparatus
CN1996103A (en) * 2006-08-18 2007-07-11 深圳创维－Rgb电子有限公司 Energy-saving circuit for use in liquid crystal display

Also Published As

Publication number Publication date
EP2043079A3 (en) 2010-03-17
EP2043079A2 (en) 2009-04-01
JP2009086133A (en) 2009-04-23
CN101399011B (en) 2011-06-15
CN101399011A (en) 2009-04-01

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Legal Events

Date Code Title Description
B03A Publication of an application: publication of a patent application or of a certificate of addition of invention
B10A Cessation: cessation confirmed

Free format text: HOMOLOGADA A DESISTENCIA DO PEDIDO SOLICITADA ATRAVES DA PETICAO NO 870170035357 DE 26/05/2017.