Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Tamotsu Akeyama

Ken Mashitani

Akihiro Takeuchi

Takaaki Abe

Akira Usui

Takayuki Kimoto

Ryoji Asada

Akihiro Kuwabara

Yoshitaka Sakamoto

A projection video display that projects video image suppresses deterioration of its quality which is attributed to a change in an optical path of the video image. A video signal generator performs control such that a second subframe in an N-th frame in a left-eye image is displayed on DMDs and then a second subframe in an N-th frame in a right-eye image is displayed on the DMDs. Furthermore, the video signal generator performs control such that a displayed location is not changed on a screen and the same types of subframes are displayed at the time when frames are switched.

Projection video display

A projection type video display device is provided, which is capable of displaying a plurality of kinds of input videos with different aspect ratios without requiring cumbersome adjustment operations. The device includes a light source (), a display element () for displaying a display video in a display area based on a video signal and modulating illumination light () from the light source based on the video signal to form an optical image (), a projection lens () which includes a zoom lens () and a focus lens (), for projecting the optical image on a screen (), a lens drive part () for adjusting the position of the zoom lens and the position of the focus lens, and a projected video control part () for controlling a projected video () projected on the screen, and the projected video control part drives the lens drive part in accordance with the aspect ratio of the input video, based on the lens position information regarding the zoom lens and the lens position information regarding the focus lens, determined by the aspect ratio of the input video in the video signal.

Projection type video display device

An image display device includes: a display partthat displays a video image based on an input signal; a video image adjusting partfor adjusting a parameter of the video image; and a region selecting partfor selecting a region in the video image, with respect to which an adjustment of the parameter is performed. The display part is capable of composing, based a video image in the selected region, a first video imagebefore the adjustment of the parameter and a second video imageto be used for the adjustment, displaying the first video image and the second video image above and below each other or side by side, and displaying either of the first video image and the second video image upside down or in a mirror-reversed manner. By operating the chroma adjusting bar, the hue adjusting bar, the luminance adjusting barof the video image adjusting part(image adjustment parameter display screen), the second video imageis varied, and when a desired video image is obtained, the image is fixed, so that contents of the adjustment are reflected throughout the whole video image. Since the first video image or the second video image is displayed upside down or in a mirror-reversed manner, an influence of the human visual characteristics is eliminated, thereby enabling a precise image quality adjustment.

Image display device and image display method

The present invention includes a film or video image pickup signal recording/reproduction system having an image pickup apparatus outputting an image pickup signal, a recording apparatus recording the image pickup signal, a reproduction apparatus reproducing the recorded signal, a characteristic conversion apparatus switching the characteristic of the reproduced signal, and a display apparatus displaying the signal output from the characteristic conversion apparatus. The image pickup apparatus has two kinds of gamma curve characteristics. The gamma curve characteristic data is recorded by the recording apparatus and extracted by the reproduction apparatus. The gamma curve characteristic of a reproduction image is switched by the characteristic conversion apparatus depending on the data. The image is output on a display apparatus.

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Osaka, Japan

Tamotsu Akeyama