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Integrated intercom chip and radio frequency carrier frequency generation method

A technology of radio frequency carrier and generation method, applied in electrical components, transmission systems, etc., can solve the problems of increasing the cost and high cost of digital walkie-talkies, and achieve the effect of reducing the dependence on high precision and reducing costs

Inactive Publication Date: 2017-06-30
AUCTUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of digital intercom, digital communication requires that the frequency of the radio frequency carrier be constant and stable. This requirement requires the local oscillator crystal of the radio frequency transceiver in the digital interphone to generate an accurate radio frequency carrier frequency. It has high requirements for the local oscillator crystal, and high requirements often represent high cost, this requirement increases the cost of digital walkie-talkies

Method used

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  • Integrated intercom chip and radio frequency carrier frequency generation method
  • Integrated intercom chip and radio frequency carrier frequency generation method
  • Integrated intercom chip and radio frequency carrier frequency generation method

Examples

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no. 1 example

[0033] Figure 1-3 Three structural schematic diagrams of the integrated intercom chip provided by the first embodiment of the present invention, by figure 1 It can be seen that, in this embodiment, the integrated intercom chip provided by the present invention includes: a micro control unit 11, a radio frequency transceiver unit 12 and a memory unit 13, the memory unit 13 is used for storing frequency deviation values, and the micro control unit 11 is used for When the radio frequency transceiver unit 12 needs to generate the radio frequency carrier frequency, it reads the frequency deviation value and sends it to the radio frequency transceiver unit 12, and the radio frequency transceiver unit 12 is used to correct the radio frequency local oscillator frequency it produces according to the frequency deviation value to generate RF carrier frequency.

[0034] Such as figure 2 As shown, in some embodiments, the integrated intercom chip in the above embodiment also includes a...

no. 3 example

[0057] This embodiment also provides an integrated intercom chip with a zero-IF digital communication function, including: a digital signal processing unit, a voice signal codec unit, an audio output power amplifier unit, a microphone amplifier circuit unit, a microprocessor unit, a power supply Management unit, memory unit, radio frequency mobile radio receiver transmitter unit, and communication data interface; the radio frequency mobile radio receiver transmitter unit is used to process data using low-voltage broadband voltage control technology, and the audio output power amplifier unit is used to output audio signals; The microphone amplifying circuit unit is used to receive audio signals; the communication data interface is based on bus control rules, sends and receives at least one type of digital signal, and transmits it to the microprocessor unit; the microprocessor unit is used to control the components in the integrated intercom chip Work; the power management unit i...

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Abstract

The present invention provides an integrated intercom chip and a radio frequency carrier frequency generation method. The integrated intercom chip comprises: a memory unit, used for storing a frequency offset value; a micro control unit, used for reading the frequency offset value when a radio frequency transceiver unit needs to generate a radio frequency carrier frequency, and for sending the radio frequency carrier frequency to the radio frequency transceiver unit; and the radio frequency transceiver unit, used for correcting, according to the frequency offset value, a radio frequency local frequency generated by the radio frequency transceiver unit, so as to generate the radio frequency carrier frequency. Based on this, each time the chip is started, the carrier local frequency is automatically corrected based on frequency offset data such as the frequency offset value, thereby enabling the radio frequency carrier frequency to be constant and stable, reducing dependence of the radio frequency carrier on a local crystal oscillator, and reducing the costs of the digital intercom.

Description

technical field [0001] The invention relates to the field of digital intercom, in particular to an integrated intercom chip and a radio frequency carrier frequency generation method. Background technique [0002] In the field of digital intercom, digital communication requires constant and stable RF carrier frequency. This requirement requires the local oscillator crystal of the RF transceiver in the digital interphone to generate accurate RF carrier frequency. It has high requirements for the local oscillator crystal, and high requirements often represent This requirement increases the cost of digital walkie-talkies. Contents of the invention [0003] The invention provides an integrated intercom chip and a radio frequency carrier frequency generation method to reduce the cost of the digital intercom. [0004] The invention provides an integrated intercom chip with zero intermediate frequency digital communication function, comprising: a micro control unit, a radio frequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/3827H04B1/40
CPCH04B1/3827H04B1/40
Inventor 李勇强王岩波
Owner AUCTUS TECH CO LTD