公开(公告)号：US5877820A

公开(公告)日：1999-03-02

申请号：US766026

申请日：1996-12-13

申请人： Toshikatsu Yamamuro ,  Tadashi Ezaki ,  Hiroshi Moriuchi

发明人： Toshikatsu Yamamuro ,  Tadashi Ezaki ,  Hiroshi Moriuchi

IPC分类号： H04B10/116 ,  H04B10/40 ,  H04B10/50 ,  H04B10/548 ,  H04B10/58 ,  H04B10/60 ,  H04N7/22 ,  H04N21/647

CPC分类号： H04N7/22

摘要： In optically transmitting a video signal comprised of luminance and chrominance signals which are frequency modulated to provide an FM luminance signal and an FM chrominance signal in respective adjacent frequency bands, such as, 6 to 20 MHz and 20 to 30 MHz, respectively, whereupon, infrared signals corresponding to the FM luminance and chrominance signals are output by respective emitting diodes, a carrier frequency for the FM chrominance signal is set, for example, between 25.93 and 26.08 MHz, so that the lower sideband wave of the FM chrominance signal is spaced by a substantial frequency from a frequency band in which a secondary distortion of the FM luminance signal is substantially generated. Further, the upper sideband wave of the FM chrominance signal is removed, as in a trap circuit, for ensuring that the transmitted FM chrominance signal will be accommodated in the respective frequency band therefor when its carrier frequency is set, as above. When the infrared signals corresponding to the FM luminance and chrominance signals are received by a photodiode and thereby transduced to respective FM modulated components output by the photodiode and then preamplified in common prior to separation, the component corresponding to the FM chrominance signal has the removed upper sideband wave restored by amplitude limiting thereof.

摘要翻译： 在光发送由频率调制的亮度和色度信号组成的视频信号，以分别在6至20MHz和20至30MHz的各个相邻频带中提供FM亮度信号和FM色度信号， 对应于FM亮度和色度信号的红外线信号由相应的发光二极管输出，用于FM色度信号的载波频率设置在例如25.93和26.08MHz之间，使得FM色度信号的下边带波间隔开 来自基本上产生FM亮度信号的次级失真的频带的实质频率。 此外，与陷波电路一样，去除FM色度信号的上边带波，以确保当其载波频率被设置时，所传输的FM色度信号将被容纳在其相应频带中，如上所述。 当对应于FM亮度和色度信号的红外线信号由光电二极管接收，从而被转换到由光电二极管输出的各个FM调制分量，然后在分离前共同预先放大时，对应于FM色度信号的分量具有去除的上位 边带波通过其限幅恢复。

公开(公告)号：US5621659A

公开(公告)日：1997-04-15

申请号：US330846

申请日：1994-10-27

申请人： Kazutoshi Matsumoto ,  Hatsuhiko Shinoda ,  Yosuke Yukihira ,  Hiroshi Moriuchi

发明人： Kazutoshi Matsumoto ,  Hatsuhiko Shinoda ,  Yosuke Yukihira ,  Hiroshi Moriuchi

IPC分类号： G11B20/00 ,  G11B27/00 ,  G11B27/34 ,  G11B27/36 ,  G11B31/00 ,  H04B1/20 ,  H04N5/44 ,  H04N5/775 ,  H04N17/04 ,  H04Q9/00 ,  H03K17/00

CPC分类号： H04N17/045 ,  G11B27/002 ,  G11B27/34 ,  G11B27/36 ,  G11B31/00 ,  H04N21/2383 ,  H04N21/4382 ,  H04N5/775 ,  H04B1/205

摘要： In a system comprising a central control device and operation devices, wherein connectors are connected to operation device and control, video, and audio signals can be exchanged among the operation devices through multiline cables connected to the connectors or as multiplexed signals, a particular operation device connected to a connector can be identified by detecting the connector inputting a control signal transmitted by the particular operation device and information on pairs, each comprising a connector and operation device connected to the connector, is cataloged in a selector control table stored in a RAM unit embedded in a control means of a central control device. Accordingly, the operation devices can be connected to each other with ease.

摘要翻译： 在包括中央控制装置和操作装置的系统中，其中连接器连接到操作装置和控制，视频和音频信号可以通过连接到连接器的多线电缆或作为多路复用信号在操作装置之间交换，特定的操作装置 可以通过检测输入由特定操作装置发送的控制信号的连接器和连接到连接器的连接器和操作装置的对的信息来识别连接到连接器的连接器，并将其编入存储在RAM单元中的选择器控制表中 嵌入在中央控制装置的控制装置中。 因此，操作装置可以容易地彼此连接。