Multimedia interphone capable of receiving analog and digital signals in multiple frequency bands simultaneously

Abstract

The invention provides a multimedia interphone capable of receiving analog and digital signals in multiple frequency bands simultaneously. The interphone comprises a first filtering control module, a first radio frequency receiving and dispatching module, a second filtering control module, a second radio frequency receiving and dispatching module, an audio input processing module, an audio broadcasting control module, an audio broadcasting module, an input information module, a main microprocessor and a digital processing module. The interphone can simultaneously receive two different frequency points of two random frequency bands including a UHF band and a VHF band, a VHF band and UHF band, a UHF band and a UHF band, and a VHF band and a VHF band, and can receive the digital and analog signals at the same time.

Description

【Technical field】 [0001] The invention relates to a multi-media multi-band walkie-talkie capable of simultaneously receiving analog and digital signals, and relates to the technical field of wireless reception and transmission. 【Background technique】 [0002] Walkie-talkies are widely used in various industries, but according to the needs of different industries, the requirements for walkie-talkies are also diverse. In some complex environments, one person and multiple machines are required to meet the use requirements. [0003] Conventional intercoms have great limitations in complex applications. The current intercom system is single and has few functions. When there are multiple systems of different formats, different frequencies, and frequency bands at the same time, and multimedia applications, this conventional intercom system cannot cope. Although there are currently dual-band walkie-talkies at home and abroad, they are basically composed of traditional solutions. The...

AI Technical Summary

Problems solved by technology

[0003] Conventional intercoms have great limitations in complex applications. The current intercom system is single and has few functions. When there are multiple systems of different formats, different frequencies, and frequency bands at the same time, and multimedia applications, this conventional intercom system cannot cope. Although there are currently dual-band walkie-talkies at home and abroad, they are basically composed of traditional solutions. The circuit composition is very complex and huge, the cost is high, the production is difficult, the debugging is difficult and the failure rate is high, and it is difficult to realize duplex in the circuit. It basically does not have dual-channel audio output independently, and some dual-frequency receivers cannot realize dual-receiving systems for the purpose of simplifying circuits. Although they have UHF and VHF dual-band functions, they can only work at the same time. on a frequency channel

Lack of comprehensive support for the receiving system of conventional radio stations, and no DPMR or DMR digital format transceiver function, and no sensor, compass and communication interface expansion circuit

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