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Wireless digital multi-channel video, voice and data mobile transmission device

A technology of data movement and transmission device, applied in pulse modulation television signal transmission, analog security/charging system, etc., can solve problems such as inability to meet information transmission, and achieve the effect of overcoming multipath interference, reducing bit error rate, and saving resources

Inactive Publication Date: 2010-03-24
安徽中科邦略通信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In practical applications, many departments and units such as public security, armed police, fire protection, sanitation, environmental protection, radio and television, etc. need to transmit high-definition video images, voice or digital data at the scene of emergencies to the remote command center for on-site monitoring and command, the use of existing wireless transmission methods cannot meet the needs of high-speed information transmission on the way or in blocking environments

Method used

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  • Wireless digital multi-channel video, voice and data mobile transmission device
  • Wireless digital multi-channel video, voice and data mobile transmission device
  • Wireless digital multi-channel video, voice and data mobile transmission device

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Embodiment Construction

[0029] The Chinese interpretation of relevant English abbreviation among the present invention:

[0030] MPEG-II: One of the international standards (moving picture and sound coding) promulgated by the Moving Picture Experts Group;

[0031] AGC amplifier: automatic gain control amplifier;

[0032] RS-232: A single-ended standard that increases communication distance in low-speed serial communication;

[0033] SDI: Serial Digital Interface;

[0034] QPSK: quadrature phase modulation method;

[0035] COFDM: coded orthogonal frequency division multiplexing modulation method;

[0036] RF: radio frequency signal;

[0037] IF: intermediate frequency signal;

[0038] TS stream: transport data stream;

[0039] IS stream: digital TV transport stream;

[0040] I / O signal: input / output signal;

[0041] A / D converter: analog / digital signal converter;

[0042] D / A converter: digital / analog signal converter;

[0043] A / V: audio / video signal;

[0044] L: left channel;

[0045] R:...

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PUM

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Abstract

The invention relates to a wireless digital single channel or multi channel video, voice and data mobile transmission equipment. The invention consists of front end digital picking-up transmitter, digital repeat relay transmitter and terminal digital receiver, front end digital picking-up transmitter divides into one-way front end digital picking-up transmitter and multi-channel front end digitalpicking-up transmitter, one-way front end digital picking-up transmitter at most picks up one-way video, two-way voice and one-way data signal and concurrently transmits to multi-channel front end digital picking-up transmitter or terminal digital receiver, multi channel front end digital picking-up transmitter can gather self-collected video, voice and data signal based on receiving multiple one-way front end digital picking-up transmitter and transmits to terminal digital receiver, all front end digital picking-up transmitters can forward radio frequency signal to terminal digital receiversvia digital repetition relay transmitter at far from terminal digital receiver.

Description

technical field [0001] The invention relates to a wireless digital multi-channel video, voice and data mobile transmission device with optional frequency and can be used in blocking and high-speed mobile environments, in particular to a device capable of transmitting multiple video and voice at a rate not lower than 6Mpbs It is a wireless digital transmission device for real-time transmission of data in the blocking environment and high-speed mobile state. Background technique [0002] At present, wireless digital transmission methods roughly include digital / Internet radio, GSM (Global System for Mobile Communications) / GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access), digital microwave, spread spectrum microwave, wireless network, etc. It should be said that Each technical system has its own advantages and disadvantages. In general: the price of digital / Internet radio stations is low, and frequency hopping technology is mostly used, but it is essent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/52H04N7/16
Inventor 熊莉莎陈有绪
Owner 安徽中科邦略通信科技有限公司
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