TWI250374B - Method for electronic adjustment of the geometry in a videoprojector used in back projection and a videoprojector utilizing the method thereof - Google Patents

Method for electronic adjustment of the geometry in a videoprojector used in back projection and a videoprojector utilizing the method thereof Download PDF

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Publication number
TWI250374B
TWI250374B TW92134583A TW92134583A TWI250374B TW I250374 B TWI250374 B TW I250374B TW 92134583 A TW92134583 A TW 92134583A TW 92134583 A TW92134583 A TW 92134583A TW I250374 B TWI250374 B TW I250374B
Authority
TW
Taiwan
Prior art keywords
image
adjustment
vertex
patent application
projected
Prior art date
Application number
TW92134583A
Other languages
English (en)
Chinese (zh)
Other versions
TW200419295A (en
Inventor
Toffoli Domenico
Original Assignee
Sim2 Multimedia Spa
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 Sim2 Multimedia Spa filed Critical Sim2 Multimedia Spa
Publication of TW200419295A publication Critical patent/TW200419295A/zh
Application granted granted Critical
Publication of TWI250374B publication Critical patent/TWI250374B/zh

Links

Classifications

    • 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]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • 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
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
    • H04N3/2335—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements with calculating means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Controls And Circuits For Display Device (AREA)
TW92134583A 2002-12-06 2003-12-05 Method for electronic adjustment of the geometry in a videoprojector used in back projection and a videoprojector utilizing the method thereof TWI250374B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20021069 ITTO20021069A1 (it) 2002-12-06 2002-12-06 Metodo di regolazione elettronica della geometria in un videoproiettore utilizzato in retroproiezione e videoproiettore utilizzante tale metodo.

Publications (2)

Publication Number Publication Date
TW200419295A TW200419295A (en) 2004-10-01
TWI250374B true TWI250374B (en) 2006-03-01

Family

ID=32500580

Family Applications (1)

Application Number Title Priority Date Filing Date
TW92134583A TWI250374B (en) 2002-12-06 2003-12-05 Method for electronic adjustment of the geometry in a videoprojector used in back projection and a videoprojector utilizing the method thereof

Country Status (5)

Country Link
EP (1) EP1568216A1 (it)
AU (1) AU2003286296A1 (it)
IT (1) ITTO20021069A1 (it)
TW (1) TWI250374B (it)
WO (1) WO2004054251A1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6225420B2 (ja) * 2012-12-19 2017-11-08 セイコーエプソン株式会社 プロジェクター及びその制御方法
CN111918043B (zh) * 2019-05-10 2022-04-15 中强光电股份有限公司 投影系统、投影画面调整方法以及投影机
CN114359036A (zh) * 2021-12-31 2022-04-15 深圳市丹芽科技有限公司 激光电视图像校正方法、装置、系统、设备及存储介质
CN116095282A (zh) * 2022-10-27 2023-05-09 中企瑞铭科技(北京)有限公司 用于图像投影的方法、处理设备及存储介质

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101197A (en) * 1988-08-17 1992-03-31 In Focus Systems, Inc. Electronic transparency method and apparatus
JP2653899B2 (ja) * 1990-06-07 1997-09-17 松下電器産業株式会社 画像補正装置
JP3409330B2 (ja) * 1991-02-08 2003-05-26 ソニー株式会社 投射型表示装置の調整装置および調整方法
BE1010346A5 (nl) * 1996-06-12 1998-06-02 Barco Nv Niet expliciet toepassingsgericht apparaat en gebruik ervan voor de automatische afregeling van een projector.
CN1210944C (zh) * 1998-10-02 2005-07-13 旺宏电子股份有限公司 用于防止梯形失真的方法和装置

Also Published As

Publication number Publication date
ITTO20021069A1 (it) 2004-06-07
AU2003286296A1 (en) 2004-06-30
WO2004054251A1 (it) 2004-06-24
TW200419295A (en) 2004-10-01
EP1568216A1 (en) 2005-08-31

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MM4A Annulment or lapse of patent due to non-payment of fees