公开(公告)号：US4864400A

公开(公告)日：1989-09-05

申请号：US66482

申请日：1987-05-28

申请人： Junji Kumada ,  Tetsuo Mitsuhashi ,  Fumio Okano ,  Jun'ichi Ishida ,  Takashi Oketani ,  Tatsuhiko Kondo

发明人： Junji Kumada ,  Tetsuo Mitsuhashi ,  Fumio Okano ,  Jun'ichi Ishida ,  Takashi Oketani ,  Tatsuhiko Kondo

IPC分类号： H04N5/067

CPC分类号： H04N5/067

摘要： A television synchronization system in which a bipolar signal having a waveform including a front porch (304), a negative polarity pulse, a positive polarity pulse and a back porch is used as a horizontal sync signal, and a composite signal having a waveform including the positive polarity pulse, the back porch, a negative polarity pulse with a wide pulse width, a front porch and a negative polarity pulse is used as a vertical sync signal. When separating and reproducing the sync signals from a television signal transmitted through a transmission line, deviation of the reference phase can be eliminated so that the accuracy of the reproduced phase is improved. Therefore, the television synchronization system is preferably used in a high definition television system.

公开(公告)号：US5063445A

公开(公告)日：1991-11-05

申请号：US511374

申请日：1990-04-19

申请人： Taiji Nishizawa ,  Yutaka Tanaka ,  Seiichi Gohshi ,  Junji Kumada ,  Yuichi Iwadate ,  Kazuhiko Shibuya ,  Toshihiko Susaki ,  Yukihiro Nishida ,  Minoru Honda ,  Taiichiro Kurita ,  Yoshinori Izumi ,  Makoto Okui ,  Isao Kondo ,  Ryoichi Yajima ,  Jun'ichi Ishida

发明人： Taiji Nishizawa ,  Yutaka Tanaka ,  Seiichi Gohshi ,  Junji Kumada ,  Yuichi Iwadate ,  Kazuhiko Shibuya ,  Toshihiko Susaki ,  Yukihiro Nishida ,  Minoru Honda ,  Taiichiro Kurita ,  Yoshinori Izumi ,  Makoto Okui ,  Isao Kondo ,  Ryoichi Yajima ,  Jun'ichi Ishida

IPC分类号： G06T9/00 ,  H04N7/015 ,  H04N7/04 ,  H04N11/24

CPC分类号： H04N7/04 ,  G06T9/004 ,  H04N11/008 ,  H04N7/0152

摘要： A multiple sub-sampling encoding/decoding system performing interfield and interframe offset sub-sampling of a broad bandwidth television signal. The system compresses the television signal to fit, for example, to the transmission bandwidth of the standard television systems, compensates the transmission characteristics, and achieves the optimal frequency allocation of the modulated transmission signal.

摘要翻译： 执行宽带电视信号的帧间和帧间偏移子采样的多个子采样编码/解码系统。 该系统压缩电视信号以适应例如标准电视系统的传输带宽，补偿传输特性，并实现调制传输信号的最佳频率分配。