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Method for raising versatility of earphone interface

A headphone interface and universal technology, applied in the direction of sound input/output, etc., can solve the problems that it is difficult to make the earphones universal and communicate with each other, and achieve the effect of facilitating product production and increasing versatility

Inactive Publication Date: 2006-02-01
上海贝豪通讯电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the first case, due to the constraints of mechanical characteristics, it is difficult to achieve common use of earphones, just as Chinese who only know Chinese cannot communicate with Americans who only know English; Basically, it is difficult for ordinary users to understand that it cannot be shared only because of the difference in pin definitions during circuit design, and it is a pity for the versatility of the product, just like two Chinese-speaking Chinese The reason people can't communicate is simply because they speak the dialect of their homeland

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  • Method for raising versatility of earphone interface
  • Method for raising versatility of earphone interface
  • Method for raising versatility of earphone interface

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Embodiment Construction

[0027] Such as figure 1 As shown, in view of the deficiencies in the prior art, the present invention proposes a method and a specific implementation circuit for increasing the versatility of the earphone interface by adding selection and switching circuits to make the earphone interface compatible with a variety of earphones with the same mechanical structure.

[0028] In this example, the common interface plug in portable electronic products is a stereo earphone of 4pole type as an example. This interface circuit realizes compatibility with two 4pole earphones with different pin definitions.

[0029] Such as figure 2 as shown, figure 2 Among them, J1 is the headphone jack in the interface circuit, U1 is the dual analog switch FSA2257 of Fairchild Company, which realizes channel switching function; U2 is the comparator MAX9705 of MAXIM Company, U2 and pull-up resistor R2 and voltage divider resistor R4, The circuit composed of R5 can realize the judgment of whether the ea...

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Abstract

A method for raising generality of earphone interface includes carrying out identification for earphone type by device according to character that different pin definition on earphone with different electric characteristic can be found when earphone is plugged in device socket, selecting and switching over circuit from interface circuits for providing different interface circuit to different earphone by microprocessor in device according to identified result for supporting more types of earphones by device.

Description

【Technical field】 [0001] The invention relates to the field of earphone jacks, in particular to a method for improving the versatility of the earphone jack. 【Background technique】 [0002] At present, earphones have become an indispensable external device for most portable products such as mobile phones. Now most mobile phones adopt the method of "one radish and one hole" configuration for earphones, that is, a type of mobile phone must use a dedicated device designated by the manufacturer. The supporting earphones of this model are not compatible with other models of earphones. In this way, it is possible that even the same manufacturer must have earphones of various specifications, which not only makes the compatibility between products poor, but also makes it difficult to ensure the quality of products. and reduce product costs. Just as people in a certain area require others to communicate with them, they must use the local dialect instead of other languages, which wil...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/16
Inventor 邱亮
Owner 上海贝豪通讯电子有限公司