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dmr digital walkie-talkie real-time intercom system

A digital walkie-talkie, TMS320F2812 technology, applied in the field of electronic technology/communication, can solve the problem of not opening the data link layer and physical layer, unable to realize precise forced interjection of a single user, unable to realize protocol custom jumping, etc.

Active Publication Date: 2019-01-04
北京众谱达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the digital walkie-talkie developed based on the DMR special chip can not implement the precise and forced interruption of a single user who is communicating, except that it can broadcast voice to all or part of the DMR digital walkie-talkie by using the broadcast mode or group call mode.
[0003] The existing DMR chip completely encapsulates the DMR protocol, does not open the data link layer and physical layer, and cannot realize protocol custom jump
Compulsory interruption can only be achieved through broadcast mode or group call mode, which will inevitably affect the use of normal users

Method used

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  • dmr digital walkie-talkie real-time intercom system

Examples

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Embodiment Construction

[0014] DMR digital walkie-talkie real-time intercom system, such as figure 1 As shown, it consists of a central processing unit TMS320F2812, a DDS radio frequency chip, an AMBE3000 vocoder, a microphone, a keyboard, a screen and a power supply module; the user enters the number of the called digital walkie-talkie through the keyboard, and starts to speak, and the microphone collects the user's voice. After being sent to the AMBE3000 vocoder for encoding, the central processor TMS320F2812 combines the number of the called digital walkie-talkie to perform DMR protocol framing, transmit through the DDS radio frequency circuit, and complete the signaling handshake between the called digital walkie-talkie and another digital walkie-talkie , At the beginning of the stage of normal voice communication, the DMR digital walkie-talkie real-time interjection system acts as a third party to forcibly insert the warning voice to realize the real-time DMR digital two-way intercom. The screen...

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Abstract

A real-time break-in operation system for a DMR (Digital Mobile Radio) digital interphone comprises a central processor TMS320F2812, a DDS radio frequency circuit, an AMBE (Advanced Multi-band Excitation) 3000 vocoder, a microphone, a keyboard, a screen and a power supply module, wherein the microphone is used for acquiring original sound, after the acquired sound is sent to the AMBE3000 vocoder to be encoded, and DMR protocol framing is carried out by the central processor TMS320F2812 combined with a number of a called digital interphone, and transmitted via the DDS radio frequency circuit, so as to realize a real-time break-in operation to a single DMR digital interphone user.

Description

technical field [0001] The invention belongs to the field of electronic technology / communication, and relates to a system that utilizes a central processing unit TMS320F2812 to skip handshake signaling and directly enter a conversation state according to a DMR (Digital Mobile Radio, digital mobile radio standard) protocol to implement a real-time interrupt for a single user. It is used for voice warning of illegal digital walkie-talkies. Background technique [0002] Conventional DMR digital walkie-talkies use DMR dedicated chips to fully implement the DMR protocol. After the caller and the called party go through the handshake protocol, they enter the voice conversation state to realize direct communication between the caller and the called party and avoid interference from other users. At the same time, the digital walkie-talkie developed based on the DMR dedicated chip can not realize the precise and forced interruption of a single user who is communicating, except that i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q5/24H04W76/14
CPCH04Q5/24H04W76/14
Inventor 毕景姣
Owner 北京众谱达科技有限公司
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