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Audio and video telecommunication system with remote monitoring function and remote device control function
| Details |
Inventors: Ishida, Kiyoshi; Torii, Nobuyoshi; Watanabe, Toshio; Yamada, Takehiko; Kidokoro, Masato; Ebihara, Toru; Nakao, Atsuko; Matsuda, Tokusou; Matsuyama, Nobuyuki; Aramaki, Tooru;
Assignee: Hitachi Ltd. (Tokyo, JP)
Primary Examiner: Kostak; Victor R.
Assistant Examiner: Miller; John W.
Attorney, Agent or Firm: Antonelli, Terry, Stout & Kraus
A video conversation/monitoring system, having a remote monitoring function and a remote peripheral device control function in addition to a video-phonic conversation function, includes a center station linked to multiple end stations through an ISDN network. The center station includes a video conversation/monitoring unit, a conversation camera, a monitor screen, a conversation microphone, a conversation speaker, a system controller, a facsimile, and an ISDN line terminating unit. Each end station includes a video conversation/monitoring unit, a system controller, a monitoring camera, a conversation camera, a conversation microphone, a conversation speaker, a sending key set for making calls, a first notification device, a second notification device, a detection device, a facsimile, and an ISDN line terminating unit. Based on the remote monitoring function of the monitoring camera and the remote control function of the system controller for switching between the monitoring camera and the conversation camera, various guidance services are provided in addition to the video-phonic conversation service. Further, the system may be incorporated within an integrated unit which can easily be installed on a desk-top. The ability of the end stations to be adapted to include various state detection devices allows the system to perform image-based and state monitoring in addition to its conversation function. |
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DETAILED DESCRIPTION The prevent invention overcomes the deficiencies of the foregoing prior art systems by providing, as a first objective, a compact, simple, and economical video conversation/monitoring system which performs conversation and monitoring through a bidirectional transmission of sounds, images, and data among a plurality of terminal stations.
A second objective of the present invention is to provide a simple and reliable video conversation/monitoring system with an enhanced ability of secrecy protection and performance of conversation and monitoring.
A third objective of the present invention is to provide a video conversation/monitoring system that can be used easily by the user for carrying out conversation and monitoring.
A fourth objective of the present invention is to provide a video conversation/monitoring system that offers an unlimited service range in terms of time and people for carrying out the conversation.
A fifth objective of the present invention is to provide a video conversation/monitoring system that can be arranged flexibly by including various peripheral devices to accomplish a number of versatile uses in addition to offering bidirectional conversation for users.
In order to achieve the above objectives, video conversation/monitoring system of the present invention preferably may be incorporated within a desk-top videoconference unit.
This unit, for example, includes a video-phonic conversation means installed in a center station and a plurality of end stations.
Bidirectional communication between the center station and the end through stations is made possible through an existing ISDN public line for carrying image, voice, and data signals inclusive of the facsimile.
The center station equipment includes a video-phonic conversation means, video input means, video output means, audio input means, audio output means, system controller, facsimile and ISDN line terminating unit.
Each end station equipment includes a video-phonic conversation means, system controller, first video input means, second video input means, video output means, audio input means, audio output means, calling means, first notification means, second notification means, detection means, facsimile and ISDN line terminating unit
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Image Analysis 
