Akin, Gump, Strauss, Hauer & Feld, L.L.P.
Video display apparatus with scan conversion and reversion and a video display method using scan conversion and reversion
A video signal of an interlaced scanning system having 525 scanning lines and a vertical scanning frequency of 60 Hz is converted to a video signal having 1050 scanning lines and a vertical scanning frequency of 120 Hz, for displaying an image by bidirectional scanning. A vertical synchronizing signal is subjected to offset processing by a &frac14; horizontal scanning period when an odd field is started, thereby keeping interlaced relation between odd and even fields. The vertical synchronizing signal is subjected to offset processing by a &frac12; horizontal scanning period every frame, so that the scanning direction for each scanning line is reversed every frame.
Matsushita Electric Industrial Co., Ltd.
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inventional inventional additional inventional inventional additional inventional
Masaaki Minoru Katsumi Satoshi Kazuto Naoji Yutaka
Fujita Miyata Terai Okamoto Tanaka Okumura Nio