公开(公告)号：US4210828A

公开(公告)日：1980-07-01

申请号：US912143

申请日：1978-06-02

申请人： Saburo Takaoka ,  Youichiro Tsuda

发明人： Saburo Takaoka ,  Youichiro Tsuda

IPC分类号： H03L7/18 ,  H03J5/02 ,  H03L7/183 ,  H04B1/26 ,  H03K5/153

CPC分类号： H03J5/0245 ,  H03J5/0263

摘要： An output waveform of a manually operable tuning pulse generator of an electronic preset type tuning control device of a tuner using varactor diodes for a multi-band radio receiver is improved by using Schmitt trigger circuit means which may be provided with a trigger level checking circuit, both being provided as IC.

摘要翻译： 使用施密特触发电路装置，可以提供触发电平检查电路，改善使用用于多频带无线电接收机的变容二极管的调谐器的电子预置型调谐控制装置的可手动调谐脉冲发生器的输出波形， 两者均作为IC提供。

公开(公告)号：US4245245A

公开(公告)日：1981-01-13

申请号：US654721

申请日：1976-02-02

申请人： Katsuaki Matsumoto ,  Yoshifumi Saeki ,  Osamu Tazawa ,  Minoru Kosaka ,  Masaki Saito ,  Hiroki Uemura ,  Tetuo Kanazashi ,  Seiji Hashimoto ,  Tsuyoshi Fujiwara ,  Tsutomu Fukui ,  Saburo Takaoka ,  Tsutomu Suzuki ,  Shozo Nakamuta ,  Toshihiko Hosaka ,  Kuniaki Shiratori ,  Youichiro Tsuda ,  Takashi Morii ,  Sumitaka Matsumura ,  Morihisa Oka

发明人： Katsuaki Matsumoto ,  Yoshifumi Saeki ,  Osamu Tazawa ,  Minoru Kosaka ,  Masaki Saito ,  Hiroki Uemura ,  Tetuo Kanazashi ,  Seiji Hashimoto ,  Tsuyoshi Fujiwara ,  Tsutomu Fukui ,  Saburo Takaoka ,  Tsutomu Suzuki ,  Shozo Nakamuta ,  Toshihiko Hosaka ,  Kuniaki Shiratori ,  Youichiro Tsuda ,  Takashi Morii ,  Sumitaka Matsumura ,  Morihisa Oka

IPC分类号： H04N7/167 ,  H04N7/171 ,  H04N7/173 ,  H04N7/16 ,  H04N7/00

CPC分类号： H04N7/17309 ,  H04N7/17363 ,  H04N2007/17372

摘要： A two-way CATV system having a substantial number of terminals incorporates a central processor and transmitter system which continually interrogates the terminals at high speed, monitoring changes of usage of premium programs and other data while also permitting central control of access to restricted premium programs. For inexpensive but reliable intercommunication, short, fixed word length digital messages are frequency multiplexed onto the cable in both upstream and downstream directions, and subscriber groups are controllably selected in turn, with each subscriber being scanned in what may be an arbitrary order by transmission of unique private messages which are recognized at the terminal and in response to which previously prepared fixed length messages are immediately transmitted in return. By employing both upstream and downstream messages which are initiated by a series of synchronizing bits and non-ambiguously related subsequent data sequences, and by the provision of means to initiate both downstream and upstream messages of short length without delay, rapid but reliable data interchange is effected despite differences in transmission and response times with different subscribers. Concurrently, terminal status and various special conditions including security alarms are remotely processed at each terminal, and short upstream messages are assembled containing priority selected data to be transmitted in response to an interrogation. The system incorporates additional means for monitoring power status, program selection and authorization and other operating conditions at each terminal effectively to provide accurate and reliable accounting information while preventing unauthorized or improper usage of restricted premium programs.

摘要翻译： 具有大量终端的双向CATV系统包括中央处理器和发射机系统，其以高速度连续询问终端，监视高级节目和其他数据的使用的改变，同时还允许对受限优惠节目的访问的中央控制。 对于廉价但可靠的互通，短，固定字长数字消息在上行和下行两个方向上被频率复用到电缆上，并且用户组可以依次可控地选择，每个用户以任意顺序扫描可以通过传输 在终端被识别并且响应于先前准备好的固定长度的消息被立即发送的唯一私人消息。 通过采用由一系列同步位和非相关相关的后续数据序列发起的上行和下行消息，并且通过提供无延迟地启动短长度的下行和上行消息的装置，快速但可靠的数据交换是 尽管与不同用户的传输和响应时间有差异。 同时，终端状态和包括安全警报在内的各种特殊条件在每个终端进行远程处理，并且组合短的上游消息，其中包含响应于询问要发送的优先选择数据。 该系统包括用于监控每个终端的电源状态，程序选择和授权以及其他操作条件的其他手段，有效地提供准确可靠的会计信息，同时防止未经授权或不正确使用限制性溢价程序。

公开(公告)号：US4385314A

公开(公告)日：1983-05-24

申请号：US267509

申请日：1981-05-27

申请人： Kenji Yashiro ,  Youichiro Tsuda

发明人： Kenji Yashiro ,  Youichiro Tsuda

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04N7/16 ,  H04N7/173 ,  H04N17/00 ,  H04N7/10

CPC分类号： H04N7/17309 ,  H04H60/21 ,  H04H60/32 ,  H04H60/43 ,  H04H2201/70 ,  H04N2007/17372

摘要： A polling pattern generator system for use in a CATV system including a polling pattern generator and a passive data monitor. The polling pattern generator periodically generates polling pattern signals each of which has a specific address code for calling a corresponding terminal unit and a command code for requesting a designated answer from the called terminal unit. The passive data monitor compares an up data signal outputted from the terminal unit in response to the command code with the designated answer requested by the command code and judges whether or not an operational state of the terminal unit is acceptable from the resultant comparison output. The passive data monitor sets the address code in the designated terminal unit.

摘要翻译： 一种用于CATV系统的轮询模式发生器系统，包括轮询模式发生器和无源数据监视器。 轮询模式发生器周期性地产生轮询模式信号，每个轮询模式信号具有用于呼叫相应终端单元的特定地址码和用于从被叫终端单元请求指定答案的命令码。 被动数据监视器将从终端单元输出的上行数据信号作为响应于命令代码与由命令代码请求的指定答案进行比较，并根据所得到的比较输出判断终端单元的操作状态是否可接受。 被动数据监视器在指定的终端单元中设置地址码。

公开(公告)号：US4365267A

公开(公告)日：1982-12-21

申请号：US267508

申请日：1981-05-27

申请人： Youichiro Tsuda

发明人： Youichiro Tsuda

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04H1/04 ,  H04H9/00 ,  H04N7/173 ,  H04N17/00 ,  H04N7/10

CPC分类号： H04N7/17309 ,  H04H60/21 ,  H04H60/32 ,  H04H60/43 ,  H04H2201/70 ,  H04N2007/17372

摘要： A polling pattern generator system for use in a CATV system including a polling pattern generator and a passive data monitor. The polling pattern generator periodically generates polling pattern signals each of which has a specific address code for calling a corresponding terminal unit and a command code for requesting a designated answer from the called terminal unit. The passive data monitor compares an up data signal outputted from the terminal unit in response to the command code with the designated answer requested by the command code and judges whether or not an operational state of the terminal unit is acceptable from the resultant comparison output. The passive data monitor sets the address code in the designated terminal unit.

摘要翻译： 一种用于CATV系统的轮询模式发生器系统，包括轮询模式发生器和无源数据监视器。 轮询模式发生器周期性地产生轮询模式信号，每个轮询模式信号具有用于呼叫相应终端单元的特定地址码和用于从被叫终端单元请求指定答案的命令码。 被动数据监视器将从终端单元输出的上行数据信号作为响应于命令代码与由命令代码请求的指定答案进行比较，并根据所得到的比较输出判断终端单元的操作状态是否可接受。 被动数据监视器在指定的终端单元中设置地址码。

公开(公告)号：US4156847A

公开(公告)日：1979-05-29

申请号：US787708

申请日：1977-04-14

申请人： Osamu Tazawa ,  Youichiro Tsuda

发明人： Osamu Tazawa ,  Youichiro Tsuda

IPC分类号： H04L1/16 ,  G08C25/02 ,  H04H20/12 ,  H04H20/76 ,  H04H20/79 ,  H04H60/97 ,  H04L5/02 ,  H04L12/40 ,  H04N7/18 ,  H04Q9/00 ,  H04Q9/14 ,  H04B1/00

CPC分类号： H04H60/97 ,  H04H20/12 ,  H04H20/76 ,  H04H20/79 ,  H04L5/02

摘要： In a bidirectional CATV system, in which interrogations and commands to terminals for individual subscribers occur at high speed, the status of individual terminals is checked rapidly and reliably without interfering with other transmissions. In response to diagnostic commands from the head end unit, the terminal responds with a message that is unlike the usual transmission, and identifies the status established in response to prior commands. The head end unit is thereby without delay able to ascertain not only that the prior commands were correctly transmitted and received but that the appropriate actions were taken in response thereto.

摘要翻译： 在双向CATV系统中，其中单个用户的终端的询问和命令以高速发生，各个终端的状态被快速可靠地检查，而不干扰其他传输。 响应于来自头端单元的诊断命令，终端用与通常传输不同的消息进行响应，并且识别响应于先前命令建立的状态。 因此，头端单元不再能够确定先前的命令被正确地发送和接收，而是响应于此而采取适当的动作。