JPH0442679A - Projection type display device - Google Patents

Projection type display device

Info

Publication number
JPH0442679A
JPH0442679A JP14858890A JP14858890A JPH0442679A JP H0442679 A JPH0442679 A JP H0442679A JP 14858890 A JP14858890 A JP 14858890A JP 14858890 A JP14858890 A JP 14858890A JP H0442679 A JPH0442679 A JP H0442679A
Authority
JP
Japan
Prior art keywords
display device
distortion
image
means
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.)
Pending
Application number
JP14858890A
Inventor
Junpei Nakamura
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP14858890A priority Critical patent/JPH0442679A/en
Publication of JPH0442679A publication Critical patent/JPH0442679A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To obtain a corrected projection image without distortion by providing a means detecting an installation angle of a placed projection type display device itself and a means correcting trapezoidal distortion caused when a video signal is projected by means of a detected signal to the display device.
CONSTITUTION: The projection type display device is provided with a means detecting an installation angle of a placed projection type display device itself and a means correcting a trapezoidal video image displayed on an optical image generating section in response to a signal detected by the angle detection means and obtaining an image on a display screen without projection distortion. The tilt of the display device main body is detected by a sensor section 4. The signal relating to the tilt is fed to a controller 6 of a signal generating section 5. Then the means to correct the trapezoidal distortion of the projected image consists of an A/D converter 10, a line memory 11, a D/A converter 12, and a signal generating section 5 are configured. Thus, the trapezoidal projection distortion image caused attended with the installation angle is corrected in response to the angle and the projection image without distortion is realized.
COPYRIGHT: (C)1992,JPO&Japio
JP14858890A 1990-06-08 1990-06-08 Projection type display device Pending JPH0442679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14858890A JPH0442679A (en) 1990-06-08 1990-06-08 Projection type display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14858890A JPH0442679A (en) 1990-06-08 1990-06-08 Projection type display device

Publications (1)

Publication Number Publication Date
JPH0442679A true JPH0442679A (en) 1992-02-13

Family

ID=15456109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14858890A Pending JPH0442679A (en) 1990-06-08 1990-06-08 Projection type display device

Country Status (1)

Country Link
JP (1) JPH0442679A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607596A2 (en) * 1993-01-19 1994-07-27 Matsushita Electric Industrial Co., Ltd. Angle measuring method and apparatus
JP2012065076A (en) * 2010-09-15 2012-03-29 Seiko Epson Corp Projection type display device and control method thereof
JP2012516640A (en) * 2009-01-30 2012-07-19 パナソニック オートモーティブ システムズ カンパニー オブ アメリカ ディビジョン オブ パナソニック コーポレイション オブ ノース アメリカ Method and apparatus for the correction of images from fisheye lenses in cameras
US8702243B2 (en) 2010-05-31 2014-04-22 Canon Kabushiki Kaisha Image projection apparatus and interchangeable lens therefor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607596A2 (en) * 1993-01-19 1994-07-27 Matsushita Electric Industrial Co., Ltd. Angle measuring method and apparatus
EP0607596A3 (en) * 1993-01-19 1995-03-29 Matsushita Electric Ind Co Ltd Angle measuring method and apparatus.
US5471295A (en) * 1993-01-19 1995-11-28 Matsushita Electric Industrial Co., Ltd. Angle measuring method and apparatus using projected graphic
JP2012516640A (en) * 2009-01-30 2012-07-19 パナソニック オートモーティブ システムズ カンパニー オブ アメリカ ディビジョン オブ パナソニック コーポレイション オブ ノース アメリカ Method and apparatus for the correction of images from fisheye lenses in cameras
US8988492B2 (en) 2009-01-30 2015-03-24 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Method and apparatus for correction of an image from a fisheye lens in a camera
US8702243B2 (en) 2010-05-31 2014-04-22 Canon Kabushiki Kaisha Image projection apparatus and interchangeable lens therefor
JP2012065076A (en) * 2010-09-15 2012-03-29 Seiko Epson Corp Projection type display device and control method thereof

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