HK1182898A2 - Transfer device, electronic signature tool, detecting device and interface detecting system - Google Patents

Transfer device, electronic signature tool, detecting device and interface detecting system

Info

Publication number
HK1182898A2
HK1182898A2 HK13109267A HK13109267A HK1182898A2 HK 1182898 A2 HK1182898 A2 HK 1182898A2 HK 13109267 A HK13109267 A HK 13109267A HK 13109267 A HK13109267 A HK 13109267A HK 1182898 A2 HK1182898 A2 HK 1182898A2
Authority
HK
Hong Kong
Prior art keywords
audio signal
pin
interface
audio
microphone
Prior art date
Application number
HK13109267A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of HK1182898A2 publication Critical patent/HK1182898A2/en

Links

Landscapes

  • Circuit For Audible Band Transducer (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The utility model provides an audio signal switching device which comprises a first interface, a second interface, an audio signal amplifying circuit and an impedance circuit. The first interface comprises an audio signal receiving pin, a microphone pin and a ground pin, the second interface comprises an audio signal output pin, the audio signal amplifying circuit is used for amplifying audio signals received by the audio signal receiving pin and outputting the audio signals to the audio signal output pin, the audio signals of the audio signal receiving pin flow to the microphone pin or the ground pin through an impedance equivalent portion of the audio signal amplifying circuit, and the impedance circuit is coupled between the microphone pin and the ground pin. The audio signal switching device is capable of detecting whether linear orders of the microphone pin and the ground pin of an audio plug are identical to those of a detection device. The utility model further provides an electronic signature tool, the detection device and an interface detection system of the audio signal switching device.
HK13109267A 2012-09-13 2013-08-08 Transfer device, electronic signature tool, detecting device and interface detecting system HK1182898A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220468534 CN202799156U (en) 2012-09-13 2012-09-13 Switching device, electronic signature tool, detection device and interface detection system

Publications (1)

Publication Number Publication Date
HK1182898A2 true HK1182898A2 (en) 2013-12-06

Family

ID=47826321

Family Applications (1)

Application Number Title Priority Date Filing Date
HK13109267A HK1182898A2 (en) 2012-09-13 2013-08-08 Transfer device, electronic signature tool, detecting device and interface detecting system

Country Status (2)

Country Link
CN (1) CN202799156U (en)
HK (1) HK1182898A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102883255B (en) * 2012-09-13 2014-12-03 天地融科技股份有限公司 Switching device, electronic signing tool, detection device and interface detection system

Also Published As

Publication number Publication date
CN202799156U (en) 2013-03-13

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Legal Events

Date Code Title Description
PF2 Short-term patent ceased to have effect under s.126(2) (not payment of maintenance fee and has 6-month grace period to pay)

Effective date: 20170808