Wireless mobile audio-video transmission system

A transmission system, audio and video technology, applied in the direction of closed-circuit television system, video conferencing system, pulse modulation TV signal transmission, etc., can solve the problem that the link bandwidth cannot meet the real-time video and audio transmission, so as to avoid unclear and smooth video recording, strengthen Security, Effects Against Modification

Inactive Publication Date: 2009-10-21
SHANGHAI SKYSHAPE INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the transmission speed of a single CDMA link reaches 120-140KBPS, and the transmission speed of a single EDGE link reaches 50KBPS. The link bandwidth cannot meet the needs of real-time video and audio transmission.

Method used

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  • Wireless mobile audio-video transmission system
  • Wireless mobile audio-video transmission system

Examples

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and the embodiments given in the accompanying drawings. The manufacturing techniques of the present invention are easily implemented by those skilled in the art.

[0032] see figure 1 , the video / control signal and audio signal received by the client are transmitted to the vehicle-mounted wireless video-audio terminal, and the vehicle-mounted wireless video-audio terminal transmits the data signal to the CDMA base station in multiple links, and then transmits the data signal to the wireless video receiving server through the dedicated line of the telecommunications network , run the matching proxy service program, and realize the communication transmission with the audio and video decoder and the streaming media server with the digital video and audio stream.

[0033] The vehicle-mounted wireless video and audio fixed terminal is a digital camera system with 4 built-in C...

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Abstract

The invention relates to the technical field of CDMA wireless video-audio transmission, specifically to a wireless mobile audio-video transmission system. The system comprises a monitoring system of a command and control centre for multiplex transmission, display, storage and remote control of a remote audio-video, and a wireless video-audio transmission system for transmitting video images and sound signals in real time to the command and control centre by binding 4 or more than 4 (8-16) CDMA / EDGE / 3G wireless links. The system further comprises a vehicular wireless video-audio terminal for 4 CDMA channels to transmit audio-video in real time, to record image and sound locally with high definition, and to echo the image and sound locally with high definition. Through practical test, the system uses 4 CDMA links (4 caloric units) to realize a transmission rate of 300-450K / S at most, to smoothly transmit a CIF image (352*288) at a speed of 25 frame / S and to smoothly transmit audio signals.

Description

[technical field] [0001] The invention relates to the technical field of CDMA wireless video and audio transmission, in particular to a wireless mobile audio and video transmission system. [Background technique] [0002] At present, most of the large-scale video and audio applications in the wireless vehicle mobile environment in the country are still in a relatively backward application mode. The main implementation method is "vehicle on-site hard disk video recording (recording), and playback after the event", which cannot meet the requirements of the control center. The need for real-time video and audio monitoring on the mobile terminal of the vehicle. In public transportation, public security, transportation, urban management, electric power, financial escort, on-site survey and other industries, the command center urgently needs to grasp the video images and sounds on the vehicle side in real time, and needs to transmit live video images and on-site sounds in real time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N7/15H04N7/52H04W84/22
Inventor 李栋余晓俊
Owner SHANGHAI SKYSHAPE INFORMATION TECH
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