Public network interphone with LCD screen

Abstract

The invention discloses a public network intercom with an LCD screen, comprising a power supply, a public network intercom main body, a keyboard, an antenna, a SIM socket, a MIC, an audio input port, a speaker, an audio output port and an LCD screen. The main body of the walkie-talkie includes a power supply circuit, an MCU circuit, a CDMA circuit, an audio circuit and a display circuit. The power supply is connected to the MCU circuit through the power supply circuit, the keyboard is connected to the MCU circuit, and the MCU circuit is connected to the CDMA circuit. The MCU circuit is connected to the LCD screen through the display circuit, the antenna, the SIM base, the MIC and the audio input port are respectively connected to the CDMA circuit, the MIC is connected to the audio input port, and the CDMA circuit is connected to the audio circuit through the audio circuit. respectively connected with the speaker and the audio output port, and the speaker is connected with the audio output port.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a walkie-talkie, a public network walkie-talkie with an LCD screen. Background technique [0002] At present, there is an urgent need for long-distance and fast communication equipment in the community, construction and groups. The common walkie-talkies on the market are all developed and short-distance. Many walkie-talkies can receive them, and information cannot be kept confidential. [0003] At the same time, it is very inconvenient for one person to carry two communication devices, a walkie-talkie and a mobile phone. At present, there is no one on the market that can have both of the above two devices at the same time. Therefore, it is urgently needed to develop a walkie-talkie that can have both requirements. Contents of the invention [0004] Therefore, in view of the above-mentioned problems, the object of the present invention is to provide a public netw...

AI Technical Summary

Problems solved by technology

[0002] At present, there is an urgent need for a long-distance and fast communication device for internal calls in the community, construction, and groups. The common walkie-talkies on the market are all developed and short-distance. Many walkie-talkies can receive them, and information cannot be kept confidential.

[0003] A

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