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Mobile phone extension system, signal transfer equipment and mobile phone

A technology of transfer equipment and expansion equipment, which is applied in the field of communication, can solve problems such as inability to transmit data, difficulty in interface equipment, and failure to expand the standardized interface of external equipment, so as to achieve the effect of accurate sampling frequency and realization of standardization

Inactive Publication Date: 2014-09-10
上海欢众信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although mobile phones have begun to use bluetooth and wifi as standard configurations, these will be subject to some restrictions, such as bluetooth, on different mobile phones, the application layer protocols supported by bluetooth are not the same, which makes it difficult to find A general-purpose interface device that can be connected with many different types of mobile phones to realize external expansion functions
For example, we want to control a toy car with wireless communication through a mobile phone. At present, the wireless communication on the toy car uses the general 2.4G or other frequency bands, which cannot directly connect with the existing standard wireless communication on the mobile phone. At this time, it needs to be expanded External devices, and currently mobile phones do not have standardized interfaces for extending external devices
[0003] At present, the headset interface is a standard configuration on mobile phones. The headset interface currently transmits voice signals and cannot transmit data other than voice.

Method used

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  • Mobile phone extension system, signal transfer equipment and mobile phone
  • Mobile phone extension system, signal transfer equipment and mobile phone
  • Mobile phone extension system, signal transfer equipment and mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] mobile extension system, such as figure 1 shown, including mobile phones and signal transfer equipment;

[0059] The signal transfer device includes a transfer processor, a headset plug, and a digital communication interface;

[0060] The headset plug includes an input line and an output line, the output line of the headset plug is used for connecting with the microphone line of the headset interface of the mobile phone, and the input line of the headset plug is used for connecting with the earphone line of the headset interface of the mobile phone;

[0061] The digital communication interface is used for digital communication with the expansion device;

[0062] The switching processor is used to output the extended device data received by the digital communication interface to the output line of the headset plug at the same binary code rate as the adaptive frequency, and to input the signal of the headset plug into the line, Perform analog / digital conversion accordin...

Embodiment 2

[0072] Based on Example 1. The sampling frequency of the headset is 44kHz, and the adaptive frequency is 44kHz. The signal transfer device outputs the extended device data received by its digital communication interface to the output of the headset plug at the same binary code rate of 44Kbits / s as the adaptive frequency. Wire. Take sending extended device data 0x23 as an example, such as figure 2 As shown, the signal output from the signal conversion device to the output line of its headset plug is a digital signal, and the analog / digital module of the mobile phone regards the digital signal as an analog signal, and performs sampling and analog-to-digital conversion at the headset sampling frequency of 44kHz. The expansion interface control module analyzes the digital signal obtained after the analog-to-digital conversion according to the data format of the digital communication interface to the actual expansion device data, so that the mobile phone obtains the expansion dev...

Embodiment 3

[0077] Based on Example 1. The signal transfer device also includes a sampling rate adaptive module, which is used to determine the adaptive frequency;

[0078] The expansion interface control module stores a verification data string and a response data;

[0079] The expansion interface control module, when the mode signal is in the extended state, if the data obtained by parsing the digital signal from the analog / digital conversion module according to the data format of the digital communication interface includes the verification data string, press The data format of the digital communication interface is to output the response data to the digital / analog conversion module at the same binary code rate as the headset sampling frequency;

[0080] The sampling rate adaptive module stores a total of N sampling rates from the 0th to the N-1th, where N is a positive integer, and stores the verification data string and the response data;

[0081] The sampling rate adaptive module ...

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Abstract

The invention discloses a mobile phone extension system, which consists of a mobile phone with a headset interface and signal transfer equipment with a headset plug, wherein the signal transfer equipment with the headset plug converts the data of the headset interface into a data format of a digital communication interface, so that the universal headset interface of the mobile phone is converted into a data transmission interface capable of transmitting a control command, the data of extended equipment and the like to realize data transmission between the mobile phone and the extended equipment with the digital communication interface, control and signal acquisition over the external extended equipment, realize the standardization of a data interface of the mobile phone and enable the mobile phone to conveniently access the external extended equipment. The invention also discloses the signal transfer equipment and the mobile phone.

Description

technical field [0001] The invention relates to communication technology, in particular to a mobile phone expansion system, signal switching equipment and a mobile phone. Background technique [0002] Mobile phones have become necessary consumer electronics products in people's lives. Compared with personal computers, the development of standardized peripheral interfaces of mobile phones is far behind. Personal computers, from the early RS232 port, to USB port, HDMI port, etc., have gone through a long-term standardized interface route. Although mobile phones have begun to use bluetooth and wifi as standard configurations, these will be subject to some restrictions, such as bluetooth, on different mobile phones, the application layer protocols supported by bluetooth are not the same, which makes it difficult to find A general interface device that can be connected with many different types of mobile phones to realize the external expansion function. For example, we want to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/725H01R31/06
Inventor 喻应东徐朔阳
Owner 上海欢众信息科技有限公司
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