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Line control push-button detecting and recognizing device and method capable of identifying combined key

A combination key and button technology, which is applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problem that the signal line cannot detect and identify the number of wire-controlled keys and combination keys, etc., to increase the recognition function , the effect of modifying less

Active Publication Date: 2009-07-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a wire-control button detection and recognition device that can identify combination keys applied to terminal equipment, so as to solve the problem that a large number of wire-control buttons and combination keys cannot be detected and identified with a small number of signal lines technical issues

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  • Line control push-button detecting and recognizing device and method capable of identifying combined key
  • Line control push-button detecting and recognizing device and method capable of identifying combined key
  • Line control push-button detecting and recognizing device and method capable of identifying combined key

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Embodiment Construction

[0029] The core idea of ​​the present invention is to properly select the resistors to form a parallel circuit between each button and the branch circuits formed by the button resistors, and to form a distinguishable detection voltage at the detection end, and then combine the comparator, analog-to-digital converter and baseband processor The software operation, without increasing the cost of hardware, realizes the function of detecting and identifying multiple remote control keys and combination keys.

[0030] figure 2 The block diagram of the circuit structure of the embodiment of the present invention is shown, and the device of the present invention is composed of the following five parts on the circuit:

[0031] (1) The power supply bias circuit 101 is composed of a power supply and a power supply voltage dividing resistor connected in series, and is used to provide an operating voltage to the series resistor of the wire-controlled key, and to provide a constant DC bias ...

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Abstract

The invention relates to a line-control key detecting-identifying device and a corresponding method which can identify the combined keys and can be applied to the terminal equipments so as to overcome the technical problems that the adoption of less signal lines cannot detect and identify more line-control keys and combined keys. The invention adopts proper resistances to lead the parallel circuits to be formed among branch circuits formed by keys and key resistances so as to obtain the distinguishable detection voltage at the detection terminal and then to achieve the purpose of detecting and identifying a plurality of line-control keys and combined keys by combining the software operation of a comparator, an analog-to-digital converter (ADC) and a baseband processor, without increasing the hardware cost.

Description

technical field [0001] The present invention relates to a detection and recognition device and method for a wire-controlled button of a terminal product, in particular to a detection and recognition device and method for a wire-controlled button that can identify combination keys applied to a terminal device. Background technique [0002] At present, there are many demands for remote control on terminal devices such as mobile phones and mp3 players. Wire-controlled earphones search channels, adjust volume, mute, etc.; on music phones, it is required to be able to realize fast forward / rewind, stop, pause, volume adjustment, etc. of audio playback through wire-controlled earphones. In order to meet the above needs, it is quite common to set 4 to 6 remote control buttons on the remote control headset. Using the remote control method can greatly improve the convenience of terminal product operation. Therefore, it is welcomed by users. Control-by-wire functionality comes as a st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/023
Inventor 马驰王亚恒李超
Owner ZTE CORP
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