CN201466380U - Mobile audio interface external device - Google Patents
Mobile audio interface external device Download PDFInfo
- Publication number
- CN201466380U CN201466380U CN2009201150369U CN200920115036U CN201466380U CN 201466380 U CN201466380 U CN 201466380U CN 2009201150369 U CN2009201150369 U CN 2009201150369U CN 200920115036 U CN200920115036 U CN 200920115036U CN 201466380 U CN201466380 U CN 201466380U
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- external device
- audio interface
- control chip
- module
- chip
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Abstract
The utility model relates to a mobile audio interface external device. For the existing mobile external device, the universality is poor, the using effect is unideal. The mobile audio interface external device comprises a circuit board, and the circuit board is provided with a control chip and a serial chip which are connected with signals, a reset module, a clock module, and a keyboard input module which are respectively connected with the control chip signal, an audio interface is connected with the serial chip, a power source module is respectively connected with the control chip and the serial chip. The external device provided by the utility mode solves the universality problem for the interface; meanwhile, the wired connection ensures the stability of communication. The mobile audio interface external device can be completely suitable for smart mobile; meanwhile, the performance is stable, the cost is low, and the power consumption is low.
Description
Technical field
The utility model belongs to communication technical field, relates to a kind of mobile phone servicing unit, is specifically related to a kind of handset audio interface external device.
Background technology
Smart mobile phone is powerful because of its performance, complete function, and application resource is abundant etc., and advantage is occupied increasing share at mobile phone market.Because number of keys is limited on the smart mobile phone, operation inconvenience that layout rationally causes inadequately and the button operation (as carrying out action game) that can't carry out quick complexity, the cellphone subscriber can wish to use external handle to solve this contradiction usually.At present, known mobile phone external equipment is by waiting special interface by USB/ serial ports/bluetooth module/infrared.During use handle and mobile phone are linked, mobile phone is operated according to the mode and the agreement of the interface correspondence of handle own.With USB and infrared interface is example, connect the USB/ infrared interface, need mobile phone to have the infrared function of USB HOST/, present most of mobile phone can not support USB HOST function because technical problems such as power consumption also do not have very perfect solution, so the hope that USB HOST function is popularized on mobile phone in the coming years is little; And infrared interface is owing to have limitation, in the time of connection interface mutually aligning have slightly to move and just cause connection failure easily, and the relative technology of the equipment of infrared interface is relatively backward superseded on mobile phone gradually.Not only versatility is poor for present in a word mobile phone external handle scheme, and practical effect is unsatisfactory.Because smart mobile phone has earphone interface, can pass through this interface input audio signal, and intelligent mobile phone system has the opening of height and wide development potential, and to design the software with acoustic control function also be feasible (at present existing software realized the acoustic control function).
Summary of the invention
The purpose of this utility model is exactly at the deficiencies in the prior art, and a kind of handset audio interface external device is provided.
The utility model comprises circuit board, circuit board is provided with control chip and the serial port chip that signal connects, reseting module, clock module, keyboard input module are connected with the control chip signal respectively, audio interface is connected with serial port chip, and power module is connected with serial port chip with control chip respectively.
The external device that the utility model proposes had both solved the problem of interface generality, and the stability of simultaneously wired connected mode communication has also had guarantee.The utility model can be common to smart mobile phone fully, stable performance, with low cost, low-power consumption.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As Fig. 1, handset audio interface external device comprises circuit board 1, circuit board 1 is provided with control chip 5 and the serial port chip 6 that signal connects, reseting module 2, clock module 3, keyboard input module 4 are connected with control chip 5 signals respectively, audio interface 8 is connected with serial port chip 6, and power module 7 is connected with serial port chip 6 with control chip 5 respectively.
Power module converts 12V voltage to 5V voltage through the DC/DC chip, give the power supply of control chip MCU and system then. reseting module has two kinds of reset modes: electrification reset, the principle of utilizing the electric capacity both end voltage not suddenly change when powering in system one is given low level in short-term of system; Hand-reset is connected low level by button and is given system reset. and clock module provides control chip MCU internal work sequential, guarantees control chip MCU operate as normal. and key-press module is the source of signal, the IO mouth on control chip MCU of a button correspondence; Control chip MCU encodes to the key of different keys and various combination, by inquiry corresponding I mouth, judge the key and the combination of pressing, its corresponding codes to be exported by serial port chip. serial port chip works to connect control chip MCU and host computer (mobile phone). and the code signal that control chip MCU produces is exported by serial ports, carry out level conversion through serial port chip, be input to mobile phone by audio interface at last.
Claims (1)
1. handset audio interface external device, comprise circuit board, it is characterized in that: circuit board is provided with control chip and the serial port chip that signal connects, reseting module, clock module, keyboard input module are connected with the control chip signal respectively, audio interface is connected with serial port chip, and power module is connected with serial port chip with control chip respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201150369U CN201466380U (en) | 2009-03-09 | 2009-03-09 | Mobile audio interface external device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201150369U CN201466380U (en) | 2009-03-09 | 2009-03-09 | Mobile audio interface external device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466380U true CN201466380U (en) | 2010-05-12 |
Family
ID=42393727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201150369U Expired - Fee Related CN201466380U (en) | 2009-03-09 | 2009-03-09 | Mobile audio interface external device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201466380U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376876A (en) * | 2012-04-26 | 2013-10-30 | 国民技术股份有限公司 | Audio interface device and power management method thereof |
| CN103402007A (en) * | 2013-07-26 | 2013-11-20 | 广州史达泊雷网络科技有限公司 | Audio interface-based data transmission method between intelligent terminal and operating handle |
-
2009
- 2009-03-09 CN CN2009201150369U patent/CN201466380U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376876A (en) * | 2012-04-26 | 2013-10-30 | 国民技术股份有限公司 | Audio interface device and power management method thereof |
| CN103376876B (en) * | 2012-04-26 | 2016-03-30 | 国民技术股份有限公司 | Audio Interface Unit and method for managing power supply thereof |
| CN103402007A (en) * | 2013-07-26 | 2013-11-20 | 广州史达泊雷网络科技有限公司 | Audio interface-based data transmission method between intelligent terminal and operating handle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20110309 |