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Same-frequency time division duplex digital interphone and communication method thereof

A digital walkie-talkie, duplex communication technology, applied in duplex signal operation, digital transmission system, two-party line system station, etc., can solve the problems of slow information reception, inconvenient use, no protection encryption settings, etc., to reduce audio frequency Effects of noise, clear received voice, and improved spectrum utilization

Pending Publication Date: 2019-09-03
QUANZHOU WANHUA TECH
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Problems solved by technology

Existing walkie-talkies enable the transmitter and receiver to work on one frequency, and can only perform single-item transmission. In this case, it is not possible to talk and listen at the same time, and it can only perform a single task. Delays lead to slow reception of information, and none of the existing walkie-talkies have protected encryption settings

Method used

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  • Same-frequency time division duplex digital interphone and communication method thereof
  • Same-frequency time division duplex digital interphone and communication method thereof
  • Same-frequency time division duplex digital interphone and communication method thereof

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Embodiment Construction

[0018] In order to further understand the structure, features and other purposes of the present invention, the attached preferred embodiments are now described in detail with accompanying drawings as follows. The embodiments described in the accompanying drawings are only used to illustrate the technical solutions of the present invention and are not limiting this invention.

[0019] Such as figure 1 as shown, figure 1 It is a block diagram of the digital walkie-talkie of the present invention; the digital walkie-talkie includes an MCU controller 1, a radio frequency baseband module 2, a digital signal processor 3, a speech codec 4, a digital-to-analog / analog-to-digital converter 5, a microphone / speaker 6 And key 7, it is characterized in that, key 7 is electrically connected with MCU controller 1, MCU controller 1 is electrically connected with radio frequency baseband module 2, radio frequency baseband module 2 is electrically connected with digital signal processor 3, and ...

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Abstract

The invention provides a same-frequency time division duplex digital interphone and a communication method thereof, and the method comprises the steps: an MCU controller controlling a radio frequencybaseband module to receive a voice signal in a first time slot and / or a second time slot, and the first time slot or the second time slot transmitting the voice signal; and the digital signal processor encoding and decoding the voice signal and judging whether the embedded signaling in the voice signal contains the duplex signal or not; when duplex signaling exists on the two time slots, the interphone outputting voices of the two time slots and forbidding emission; when duplex signaling exists on only one time slot, transmitting voice on the other time slot during transmission, performing theduplex signaling, and receiving the voice in one time slot with the duplex signaling; and when the duplex signaling is not received, transmitting the voice with the duplex signaling on one time slotduring transmission, and keeping the other time slot in a receiving state. According to the method, the TDMA technology of double time slots is adopted, and the two time slots can be respectively usedas a sending time slot and a receiving time slot, so that the same-frequency voice duplex communication is realized.

Description

technical field [0001] The invention relates to the technical field of digital walkie-talkies, in particular to a digital walkie-talkie with same-frequency time-division duplexing and a communication method thereof. Background technique [0002] The walkie-talkie is a two-way mobile communication tool. It can make calls without any network support, and there is no call charge. It is suitable for relatively fixed and frequent calls. There are currently three types of walkie-talkies: analog walkie-talkies, digital walkie-talkies, and IP walkie-talkies. Existing walkie-talkies enable the transmitter and receiver to work on one frequency, and can only perform single-item transmission. In this case, it is not possible to talk and listen at the same time, and it can only perform a single task. Delays lead to slow reception of messages, and none of the existing walkie-talkies have protected encryption settings. Contents of the invention [0003] In order to solve the shortcomin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q5/24H04L5/14
CPCH04Q5/24H04L5/1469
Inventor 傅锦青傅汉龙傅茂森庄惠民郑成明
Owner QUANZHOU WANHUA TECH
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