KR101044212B1 - 균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이 - Google Patents

균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이 Download PDF

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Publication number
KR101044212B1
KR101044212B1 KR1020057010106A KR20057010106A KR101044212B1 KR 101044212 B1 KR101044212 B1 KR 101044212B1 KR 1020057010106 A KR1020057010106 A KR 1020057010106A KR 20057010106 A KR20057010106 A KR 20057010106A KR 101044212 B1 KR101044212 B1 KR 101044212B1
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South Korea
Prior art keywords
pulse width
pulse
segment
pixel brightness
segments
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Expired - Lifetime
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KR1020057010106A
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English (en)
Korean (ko)
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KR20050084145A (ko
Inventor
도날드 헨리 윌리스
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톰슨 라이센싱
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
    • G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • 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
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
    • 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
    • G09G3/3433—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/346—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on modulation of the reflection angle, e.g. micromirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/312—Driving therefor
    • H04N9/3123—Driving therefor using pulse width modulation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235—Field-sequential colour display
    • 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
    • G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
    • 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
    • G09G2320/0266—Reduction of sub-frame artefacts
    • 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
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
    • G09G3/2025—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having all the same time duration
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7458—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]
    • H04N2005/7466—Control circuits therefor

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Optics & Photonics (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Projection Apparatus (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
KR1020057010106A 2002-12-04 2003-07-07 균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이 Expired - Lifetime KR101044212B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43075102P 2002-12-04 2002-12-04
US60/430,751 2002-12-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1020107018675A Division KR20100114527A (ko) 2002-12-04 2003-07-07 균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이

Publications (2)

Publication Number Publication Date
KR20050084145A KR20050084145A (ko) 2005-08-26
KR101044212B1 true KR101044212B1 (ko) 2011-06-29

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
KR1020057010106A Expired - Lifetime KR101044212B1 (ko) 2002-12-04 2003-07-07 균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이
KR1020107018675A Ceased KR20100114527A (ko) 2002-12-04 2003-07-07 균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이

Family Applications After (1)

Application Number Title Priority Date Filing Date
KR1020107018675A Ceased KR20100114527A (ko) 2002-12-04 2003-07-07 균등화된 펄스폭 세그먼트를 갖는 펄스폭 변조 디스플레이

Country Status (7)

Country Link
US (1) US7245327B2 (enExample)
EP (1) EP1568217A4 (enExample)
JP (2) JP5851672B2 (enExample)
KR (2) KR101044212B1 (enExample)
CN (1) CN100388797C (enExample)
AU (1) AU2003247894A1 (enExample)
WO (1) WO2004054252A1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003247894A1 (en) * 2002-12-04 2004-06-30 Thomson Licensing S.A. Pulse width modulated display with equalized pulse width segments
KR100686070B1 (ko) 2004-10-18 2007-02-23 엘지전자 주식회사 영상표시기기의 밝기조정방법 및 장치
WO2006085855A1 (en) * 2005-01-28 2006-08-17 Thomson Licensing Sequential display with motion adaptive processing for a dmd projector
US7290883B2 (en) * 2005-03-24 2007-11-06 Tte Tchnology, Inc. System and method for projecting video onto a screen
TWI261462B (en) * 2005-04-21 2006-09-01 Optoma Corp Optical projection apparatus
WO2014182404A1 (en) 2013-05-07 2014-11-13 Dolby Laboratories Licensing Corporation Multi-half-tone imaging and dual modulation projection/dual modulation laser projection
US10341622B2 (en) 2013-05-07 2019-07-02 Dolby Laboratories Licensing Corporation Multi-half-tone imaging and dual modulation projection/dual modulation laser projection

Citations (2)

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Publication number Priority date Publication date Assignee Title
US6362835B1 (en) * 1993-11-23 2002-03-26 Texas Instruments Incorporated Brightness and contrast control for a digital pulse-width modulated display system
US20060108053A1 (en) * 2004-11-19 2006-05-25 Hart James M Hot application of apex on a tire building machine

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EP0664917B1 (en) * 1992-10-15 2004-03-03 Texas Instruments Incorporated Display device
US5619228A (en) * 1994-07-25 1997-04-08 Texas Instruments Incorporated Method for reducing temporal artifacts in digital video systems
US5777589A (en) * 1995-04-26 1998-07-07 Texas Instruments Incorporated Color display system with spatial light modulator(s) having color-to-color variations in data sequencing
CA2184129A1 (en) * 1995-08-31 1997-03-01 Donald B. Doherty Bit-splitting for pulse width modulated spatial light modulator
JP3322809B2 (ja) * 1995-10-24 2002-09-09 富士通株式会社 ディスプレイ駆動方法及び装置
US5940142A (en) * 1995-11-17 1999-08-17 Matsushita Electronics Corporation Display device driving for a gray scale expression, and a driving circuit therefor
US5774196A (en) * 1996-06-13 1998-06-30 Texas Instruments Incorporated Method and apparatus of aligning color modulation data to color wheel filter segments
JPH10177370A (ja) * 1996-10-16 1998-06-30 Oki Lsi Technol Kansai:Kk 多階調出力回路及び液晶表示装置
US6108053A (en) * 1997-05-30 2000-08-22 Texas Instruments Incorporated Method of calibrating a color wheel system having a clear segment
US6246185B1 (en) * 1998-12-31 2001-06-12 Texas Instruments Incorporated High frequency ballast for high intensity discharge lamps
JP4008178B2 (ja) * 1999-03-04 2007-11-14 松下電器産業株式会社 階調表示方法
JP2000259126A (ja) * 1999-03-04 2000-09-22 Matsushita Electric Ind Co Ltd 階調表示方法
AU2003247894A1 (en) * 2002-12-04 2004-06-30 Thomson Licensing S.A. Pulse width modulated display with equalized pulse width segments

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6362835B1 (en) * 1993-11-23 2002-03-26 Texas Instruments Incorporated Brightness and contrast control for a digital pulse-width modulated display system
US20060108053A1 (en) * 2004-11-19 2006-05-25 Hart James M Hot application of apex on a tire building machine

Also Published As

Publication number Publication date
JP2014225034A (ja) 2014-12-04
EP1568217A4 (en) 2009-06-03
CN1703903A (zh) 2005-11-30
KR20100114527A (ko) 2010-10-25
CN100388797C (zh) 2008-05-14
JP5851672B2 (ja) 2016-02-03
AU2003247894A1 (en) 2004-06-30
US20060203134A1 (en) 2006-09-14
EP1568217A1 (en) 2005-08-31
US7245327B2 (en) 2007-07-17
KR20050084145A (ko) 2005-08-26
JP2006509257A (ja) 2006-03-16
JP6021859B2 (ja) 2016-11-09
WO2004054252A1 (en) 2004-06-24

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