Multi-media co-cable two-way transmission apparatus for monitoring trade
A two-way transmission and multimedia technology, which is applied in the direction of cable transmission adaptation, color TV parts, TV system parts, etc., can solve the problem that the control room cannot know the occurrence of the situation in time, the common cable two-way transmission device cannot alarm, and the location of the accident cannot be solved. Issues such as broadcasting and two-way communication
Inactive Publication Date: 2007-06-13
北京中天技源电子科技有限公司
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Problems solved by technology
[0005] However, the co-cable two-way transmission device cannot give an alarm at the monitoring point, and the control room cannot understand the situation in time. Once an emergency occurs, the control room is likely to miss recording
At the same time, even if an emergency situation is found in the control room, it can only record and notify the police, and cannot broadcast and communicate with the accident location, failing to achieve the purpose of immediate warning and deterrence
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[0022] The multi-media co-cable bidirectional transmission device proposed by the present invention for the monitoring industry is described in detail as follows in conjunction with the accompanying drawings and embodiments:
[0023] The general structure of the composition of the present invention is as shown in Figure 1, comprises: control and audio modulation part, audio and video restoration and warning part, audio and video modulation part, control and audio frequency demodulation part and computer; Wherein, control and audio frequency modulation part and audio and video Restoration and alarm components form a set of common cable control restorer and computer placed in the control room, while audio and video modulation components and control and audio demodulation components form a set of common cable anti-transmission decoders placed at the monitoring point, common cable control restoration The device and the common-cable anti-transmission decoder are connected through a ...
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Cable shared control reductor composed of control and audio modulation module, as well as audio / video reduction and alarming module in the device and computer are arranged at control room. Cable shared reverse transferred demodulator composed of audio / video modulation module as well as control and audio demodulation module is arranged at monitored places. Two sets of devices are connected to each other through only one piece of cable. Input end of the control and audio modulation module receives signals of control and audio, and its output end through cable is connected to input end of control and audio demodulation module. Input end of audio / video modulation module receives video / audio and alarming signals, and its output end through same cable is connected to input end of audio / video reduction and alarming module. In the invention, reverse transferred signals and forward transferred signals are through same cable.
Description
technical field [0001] The invention belongs to the technical field of audio and video transmission processing in the monitoring industry, and in particular relates to the design of a multimedia co-cable bidirectional transmission device. Background technique [0002] In the monitoring industry, it is necessary to send the video signals, audio signals, and alarm signals of multiple monitoring points back to the (reverse transmission) control room, and the control room needs to send the control signals of the camera and the pan / tilt, and the audio signals for broadcasting to the (positive transmission) pass) monitoring point. If these signals are transmitted without special processing, a large number of transmission lines will inevitably be used. For example, the reverse transmission of a monitoring point requires three transmission lines (video signal, audio signal, alarm signal), plus two transmission lines required for forward transmission (camera With the control signal ...
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IPC IPC(8): H04N7/18H04N7/10H04N5/268
Inventor 朱路
Owner 北京中天技源电子科技有限公司