DE68915994D1 - Umschaltkreis zur Fokussierungsregelung für Projektionsfernsehempfänger. - Google Patents

Umschaltkreis zur Fokussierungsregelung für Projektionsfernsehempfänger.

Info

Publication number
DE68915994D1
DE68915994D1 DE68915994T DE68915994T DE68915994D1 DE 68915994 D1 DE68915994 D1 DE 68915994D1 DE 68915994 T DE68915994 T DE 68915994T DE 68915994 T DE68915994 T DE 68915994T DE 68915994 D1 DE68915994 D1 DE 68915994D1
Authority
DE
Germany
Prior art keywords
switching circuit
television receivers
focusing control
projection television
projection
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.)
Expired - Fee Related
Application number
DE68915994T
Other languages
English (en)
Other versions
DE68915994T2 (de
Inventor
Masahiro Kawashima
Kazuyasu Yamamoto
Tsutomu Nishida
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE68915994D1 publication Critical patent/DE68915994D1/de
Application granted granted Critical
Publication of DE68915994T2 publication Critical patent/DE68915994T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/28—Arrangements for convergence or focusing
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
DE68915994T 1989-01-19 1989-01-19 Umschaltkreis zur Fokussierungsregelung für Projektionsfernsehempfänger. Expired - Fee Related DE68915994T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89100887A EP0378722B1 (de) 1989-01-19 1989-01-19 Umschaltkreis zur Fokussierungsregelung für Projektionsfernsehempfänger

Publications (2)

Publication Number Publication Date
DE68915994D1 true DE68915994D1 (de) 1994-07-14
DE68915994T2 DE68915994T2 (de) 1994-10-13

Family

ID=8200874

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68915994T Expired - Fee Related DE68915994T2 (de) 1989-01-19 1989-01-19 Umschaltkreis zur Fokussierungsregelung für Projektionsfernsehempfänger.

Country Status (3)

Country Link
US (1) US4982276A (de)
EP (1) EP0378722B1 (de)
DE (1) DE68915994T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172221A (en) * 1989-12-29 1992-12-15 Samsung Electronics Co., Ltd. Picture projecting apparatus for a projection display system and the method thereof
KR0138365B1 (ko) * 1993-06-23 1998-05-15 김광호 출력회로
US6377317B1 (en) * 1999-04-08 2002-04-23 Sony Corporation Method and apparatus for correcting color component focusing in a rear-projection television set
JP6451175B2 (ja) * 2014-09-24 2019-01-16 富士ゼロックス株式会社 画像処理装置、システム及びプログラム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501673A (en) * 1968-04-29 1970-03-17 Stromberg Datagraphix Inc Variable magnification cathode ray tube
JPS5887992A (ja) * 1981-11-18 1983-05-25 Mitsubishi Electric Corp 色温度補正回路
JPS60186185A (ja) * 1984-03-05 1985-09-21 Sony Corp 自動ホワイトバランス調整回路
US4584596A (en) * 1984-04-13 1986-04-22 Rca Corporation Television receiver alignment system
JPS62185491A (ja) * 1986-02-10 1987-08-13 Matsushita Electric Ind Co Ltd フオ−カス回路
US4731564A (en) * 1986-05-12 1988-03-15 Rca Corporation Service switch for video display apparatus
JPH0516765Y2 (de) * 1986-05-14 1993-05-06

Also Published As

Publication number Publication date
US4982276A (en) 1991-01-01
EP0378722B1 (de) 1994-06-08
DE68915994T2 (de) 1994-10-13
EP0378722A1 (de) 1990-07-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee