Telemetry monitoring method and device therefor for transmitting information by means of asynchronous transfer mode technique in broadband ISDN
First Claim
1. A telemetry supervisory system for transmitting information by means of an asynchronous transfer mode technique in a broad band integrated services digital network, the system comprising:
- means for detecting an object and monitoring a state of the object in an enclosed space;
coding means connected to said detecting and monitoring means for coding video data of the monitored object to a variable code length;
a transmission unit connected to said coding means for changing an output of said coding means into cells each having a fixed length; and
a monitor station;
said transmission unit transmitting said cells to aid monitor station in an asynchronous transmission mode via a communication network;
said monitor station including;
a cell number counter for counting a number of cells per unit time received from said monitored object through said transmission unit; and
cell number increase detection means connected to said counter and outputting an alarm signal which identifies a monitored object when a number of cells counted by said cell number counter is larger than a predetermined value.
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Accused Products
Abstract
A telemetry supervisory system in an asynchronous transmission mode network which discriminates less information when less variation rates occur and more information when more variation rates occur, and provides a transmission system for transmitting the discriminated information as a cell having a fixed length, includes an object detecting and monitoring device, a coder for coding picture signals from the detecting and monitoring device, a transmission unit which changes the output of the coder into cells each having a fixed length and a monitor station. Monitoring information such as a picture image or sound from a monitored object is transmitted by the transmission unit for a discrimination of the information. A number of cells transmitted as data is monitored at the receiving side, e.g. monitor station, and a variation of the number of cells is treated as a change in the state of the monitored object.
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Citations
8 Claims
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1. A telemetry supervisory system for transmitting information by means of an asynchronous transfer mode technique in a broad band integrated services digital network, the system comprising:
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means for detecting an object and monitoring a state of the object in an enclosed space; coding means connected to said detecting and monitoring means for coding video data of the monitored object to a variable code length; a transmission unit connected to said coding means for changing an output of said coding means into cells each having a fixed length; and a monitor station; said transmission unit transmitting said cells to aid monitor station in an asynchronous transmission mode via a communication network; said monitor station including; a cell number counter for counting a number of cells per unit time received from said monitored object through said transmission unit; and cell number increase detection means connected to said counter and outputting an alarm signal which identifies a monitored object when a number of cells counted by said cell number counter is larger than a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A telemetry supervisory system for transmitting information by means of an asynchronous transfer mode technique in a broad band integrated services digital network, the system comprising:
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means for detecting an object and monitoring a state of the object in an enclosed space; coding means connected to said detecting and monitoring means for coding video signals of the monitored object to a variable code length; a transmission unit connected to said coding means for changing an output of said coding means into cells each having a fixed length; and a monitor station; said transmission unit transmitting said cells to said monitor station in an asynchronous transmission mode via a communication network; said monitor station including; a plurality of cell number counters for counting a number of cells per unit time received from said monitored object through said transmission unit, a header matching means for receiving an output of said communication network and sending each header coincidence signal to a respective cell number counter, cell disassembly means for receiving outputs of said header matching means to obtain cell data based on a coincidence of headers, VRC decoder means for receiving an output of said cell disassembly means to decode coded signals received therefrom, a display unit, selector means for receiving an output of said VRC decoder means as picture signals, selecting a desired picture and sending said picture to said display unit, and cell number increase detection means connected to said counters and outputting an alarm signal which identifies a monitored object when a number of cells counted by the respective cell number counter is larger than a predetermined value.
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Specification