GB9722963D0 - Rear projection type image display apparatus - Google Patents

Rear projection type image display apparatus

Info

Publication number
GB9722963D0
GB9722963D0 GBGB9722963.7A GB9722963A GB9722963D0 GB 9722963 D0 GB9722963 D0 GB 9722963D0 GB 9722963 A GB9722963 A GB 9722963A GB 9722963 D0 GB9722963 D0 GB 9722963D0
Authority
GB
United Kingdom
Prior art keywords
image display
display apparatus
type image
projection type
rear 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.)
Granted
Application number
GBGB9722963.7A
Other versions
GB2316262B (en
GB2316262A (en
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP1238094A external-priority patent/JPH07222278A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority claimed from GB9500694A external-priority patent/GB2285722B/en
Publication of GB9722963D0 publication Critical patent/GB9722963D0/en
Publication of GB2316262A publication Critical patent/GB2316262A/en
Application granted granted Critical
Publication of GB2316262B publication Critical patent/GB2316262B/en
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
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • 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
    • H04N5/7408—Direct viewing projectors, e.g. an image displayed on a video CRT or LCD display being projected on a screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/642—Disposition of sound reproducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
GB9722963A 1994-01-17 1995-01-13 Rear projection type image display apparatus Expired - Fee Related GB2316262B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP294094 1994-01-17
JP1238094A JPH07222278A (en) 1994-02-04 1994-02-04 Projection type image display device
GB9500694A GB2285722B (en) 1994-01-17 1995-01-13 Rear projection type image display apparatus

Publications (3)

Publication Number Publication Date
GB9722963D0 true GB9722963D0 (en) 1998-01-07
GB2316262A GB2316262A (en) 1998-02-18
GB2316262B GB2316262B (en) 1998-06-24

Family

ID=27267549

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9722963A Expired - Fee Related GB2316262B (en) 1994-01-17 1995-01-13 Rear projection type image display apparatus
GB9722961A Expired - Fee Related GB2316261B (en) 1994-01-17 1995-01-13 Rear projection type image display apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9722961A Expired - Fee Related GB2316261B (en) 1994-01-17 1995-01-13 Rear projection type image display apparatus

Country Status (1)

Country Link
GB (2) GB2316262B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3583737B2 (en) * 2001-06-29 2004-11-04 株式会社東芝 Projection display device and heat radiation method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640227C3 (en) * 1976-09-07 1980-03-20 Rolf 7050 Waiblingen Dieckhoff Demonstration device, in particular audio-visual information device
US4761063A (en) * 1986-01-09 1988-08-02 Pioneer Electronic Corporation Projection lens system
US4925295A (en) * 1986-03-17 1990-05-15 Casio Computer Co., Ltd. Projection display apparatus
US4792217A (en) * 1986-12-09 1988-12-20 Pioneer Electronic Corporation Projection lens system
DE3710628A1 (en) * 1987-03-31 1988-10-20 Demolux OVERHEAD PROJECTOR
US5272540A (en) * 1989-04-28 1993-12-21 Hitachi, Ltd. Temperature compensating lens system for projection television
US5200814A (en) * 1989-04-28 1993-04-06 Hitachi, Ltd. Video projector with optical color balance
GB9026151D0 (en) * 1990-11-30 1991-01-16 Emi Plc Thorn Display device
JP2885565B2 (en) * 1992-03-12 1999-04-26 三菱電機株式会社 Projection device
US5363149A (en) * 1992-04-23 1994-11-08 Pioneer Electronic Corporation Projection television set

Also Published As

Publication number Publication date
GB2316262B (en) 1998-06-24
GB2316261A (en) 1998-02-18
GB2316262A (en) 1998-02-18
GB9722961D0 (en) 1998-01-07
GB2316261B (en) 1998-06-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050113