HK1182898A2 - Transfer device, electronic signature tool, detecting device and interface detecting system - Google Patents
Transfer device, electronic signature tool, detecting device and interface detecting systemInfo
- 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
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.
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)
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 |
-
2012
- 2012-09-13 CN CN 201220468534 patent/CN202799156U/en not_active Withdrawn - After Issue
-
2013
- 2013-08-08 HK HK13109267A patent/HK1182898A2/en not_active IP Right Cessation
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 |