Sony Corporation

Takashi Norizuki

Hideki Yoshida

Jin Sato

Munehiro Yoshikawa

Kazuyuki Ikeda

Daisuke Kawaguchi

Kenichi Sakusabe

Naoki Kobayashi

Naomasa Takahashi

Yohsuke Kaji

Hiro Kawakami

Minako Kawata

Provided is a video image converter that generates attitude data of a projector based on motion data in projecting moving picture data, stores the attitude data in a storage unit, corrects the moving picture data based on the attitude data, and stores the corrected moving picture data in the storage unit. The projector plays back the corrected moving picture data stored in the storage unit and projects the corrected moving picture data onto a projection plane. A cradle supports the projector and changes an attitude of the projector based on the attitude data stored in the storage unit.

Projection system, video image converter, projector, cradle, video image conversion method, and video image projection method

There is provided an image processing method including detecting a distorted image before correction projected on a screen by a projection-type image display device, searching for a same shape as an input image having a maximum area inside the distorted image, and correcting the input image in a manner that the distorted image becomes the searched-for shape having the maximum area.

Image processing method and image projection device

A data processing apparatus constitutes a low-cost audio/video data transmission and reception system. A reception buffer monitoring circuitmonitors the size of receiver data being accumulated in a reception buffer. When the size of accumulated data is found to become higher than a high threshold, the circuitcauses a reception clock generation circuitto generate a reception clock with a higher frequency. When the accumulated data size becomes lower than a low threshold, the reception clock is generated with a lower frequency. Based on the reception clock fed from the reception clock generation circuit, an audio/video decoderdecodes the audio/video data coming from the reception buffer. The data processing apparatus applies advantageously to a television transmission and reception system for transmitting and receiving TV broadcast signals.

Data processing apparatus which prevents data overflow and underflow

A data processing apparatus constituting a low-cost audio/video data transmission and reception system is disclosed. A reception buffer monitoring circuitmonitors the size of receiver data being accumulated in a reception buffer. When the size of accumulated data is found to become higher than a high threshold, the circuitcauses a reception clock generation circuitto generate a reception clock with a higher frequency. When the accumulated data size becomes lower than a low threshold, the reception clock is generated with a lower frequency. Based on the reception clock fed from the reception clock generation circuit, an audio/video decoderdecodes the audio/video data coming from the reception buffer. This invention applies advantageously to a television transmission and reception system for transmitting and receiving TV broadcast signals.

Data processor capable of preventing data overflows and underflows

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Chiba, Japan

Takashi Norizuki