公开(公告)号：US3733430A

公开(公告)日：1973-05-15

申请号：US3733430D

申请日：1970-12-28

Applicant: RCA CORP

Inventor： THOMPSON J ,  SCHOENBECK R

IPC: G08B26/00 ,  H04H1/00 ,  H04H60/21 ,  H04H60/43 ,  H04H60/97 ,  H04N7/173 ,  H04N1/44

CPC classification number: H04N7/17327 ,  G08B26/002 ,  H04H60/21 ,  H04H60/43 ,  H04H60/97 ,  H04H2201/30 ,  H04H2201/70 ,  H04K3/41 ,  H04K3/42 ,  H04K2203/14 ,  H04N2007/17372

Abstract: A novel remote monitoring system, described in the context of a cable antenna television system, which includes a control monitoring station for interrogating and monitoring various devices in a subscriber''s remote site. The interrogation signals are transmitted by means of high frequency FM transmission via a trunk cable to a multitude of remote sites. Each remote site is addressed by a unique code and each remote site stores information indicative of the status of its respective monitored devices. Upon request from the control monitor station, such information is transmitted to the control monitor station by means of low frequency FM transmission via the aforementioned trunk cable. For tv channel identification, as for pay tv billing, each individual channel is marked with an identification signal which may be stored in the respective subscriber''s remote unit until the control monitor station requests such information by interrogating the remote unit. The stored information is transmitted to the control monitor station and transferred to storage means, such as a computer, for billing or for other purposes.

Abstract translation: 一种在有线天线电视系统的上下文中描述的新型远程监视系统，其包括用于询问和监视用户远程站点中的各种设备的控制监视站。 询问信号通过高频FM传输通过中继电缆传输到多个远程站点。 每个远程站点由唯一的代码寻址，并且每个远程站点存储指示其各自被监控设备的状态的信息。 根据控制监视站的要求，通过上述中继电缆通过低频FM传输将这些信息发送到控制监控站。