CN203167246U - Portable equipment earphone interface and serial communication interface converter - Google Patents
Portable equipment earphone interface and serial communication interface converter Download PDFInfo
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- CN203167246U CN203167246U CN 201320133511 CN201320133511U CN203167246U CN 203167246 U CN203167246 U CN 203167246U CN 201320133511 CN201320133511 CN 201320133511 CN 201320133511 U CN201320133511 U CN 201320133511U CN 203167246 U CN203167246 U CN 203167246U
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- interface
- serial communication
- communication interface
- transducer
- portable set
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Abstract
The utility model relates to the converter field and especially relates to a portable equipment earphone interface and serial communication interface converter. The portable equipment earphone interface and serial communication interface converter comprises a CPU. The portable equipment earphone interface and serial communication interface converter is characterized in that the CPU is connected with a coding and decoding module and a serial communication interface, wherein the coding and decoding module is connected with an earphone interface. The portable equipment earphone interface and serial communication interface converter is used for realizing conversion between the earphone interface and the serial communication interface and has properties of simple hardware structure and low cost.
Description
Technical field
The utility model relates to the transducer field, especially a kind of portable set headset interface and serial communication interface transducer.
Background technology
FSK(Frequency-shift keying) be to use than a kind of modulation system early in the information transmission, its major advantage is: implement and be easier to antinoise and antifading better performances.In middle low speed data transmission, obtained using widely.Modal is the double frequency FSK system of carrying binary ones and 0 with two frequencies.
Technical FSK has two classification, incoherent and relevant FSK.In noncoherent FSK, the transfer between the instantaneous frequency is two discrete values called after mark and spatial frequencys.On the other hand, in relevant frequency shift keying or binary FSK, be not have the rest periods in output signal.
Dual tone multi-frequency dtmf (Dual Tone Multi Frequency), dual-tone multifrequency is made up of high frequency group and low frequency group, and the height frequency group respectively comprises 4 frequencies.A composite signal is formed in a high-frequency signal and a low frequency signal stack, represents a numeral.Dtmf signal has 16 codings.Dtmf signal comprises two groups of audio signals, and the task of decoder is by mathematic(al) manipulation it to be transformed into frequency domain from time domain, draws corresponding digital information then.Because what chip was handled is digital signal, so must the input signal digitlization be handled with dsp chip again.During frequency detecting, detect first-harmonic and the second harmonic of dtmf signal, dtmf signal only has higher energy at first-harmonic, and voice signal then is to be superimposed with stronger second harmonic at first-harmonic, and the effect that detects second harmonic is to distinguish dtmf signal and language and music signal.
The utility model content
In view of this, the purpose of this utility model provides a kind of portable set headset interface and serial communication interface transducer.
The utility model adopts following scheme to realize: a kind of portable set headset interface and serial communication interface transducer, comprise a CPU, it is characterized in that: described CPU connects a coding/decoding module and a string communication interface that works, and described coding/decoding module connects a headset interface.
In the utility model one embodiment, described coding/decoding module is DTMF module or FSK module.
In the utility model one embodiment, described serial communication interface comprises RS232 interface or RS422 interface.
In the utility model one embodiment, described CPU is connected with described coding/decoding module with the DA interface by the AD interface.
In the utility model one embodiment, described coding/decoding module is integrated among the described CPU.
In the utility model one embodiment, described portable set is mobile phone or flat board.
In the utility model one embodiment, also comprise a power module, with thinking described transducer power supply.
The utility model is used for the conversion between realization headset interface and the serial communication interface, and hardware is formed simple, and is with low cost.
Description of drawings
Fig. 1 is the frame diagram of the utility model portable set headset interface and serial communication interface transducer.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below will the utility model be described in further detail by specific embodiment and relevant drawings.
The utility model provides a kind of portable set headset interface and serial communication interface transducer, comprises a CPU, it is characterized in that: described CPU connects a coding/decoding module and a string communication interface that works, and described coding/decoding module connects a headset interface.
As shown in Figure 1, present embodiment provides a kind of portable set headset interface and serial communication interface transducer, comprise a CPU1(central processing unit), it is characterized in that: described CPU connects a coding/decoding module 2 and a string communication interface 3 that works, and described coding/decoding module 2 connects a headset interface 4.
In the utility model one preferred embodiment, described coding/decoding module is DTMF module or FSK module etc.; Described serial communication interface can be RS232 interface or RS422 interface etc.; Described CPU is connected with described coding/decoding module with the DA interface by the AD interface, the headset interface of portable set (comprising earphone interface or microphone interface etc.) inserts in the headset interface 4 of described transducer, described coding/decoding module is used for the signal of described portable set by the transmission of headset interface carried out encoding and decoding and send described CPU to by the AD interface, perhaps described CPU is carried out encoding and decoding and sends described portable set to by the signal of DA interface output; Described portable set is mobile phone or flat board etc.; Also comprise a power module, with thinking described transducer power supply.In the utility model one preferred embodiment, described coding/decoding module can be integrated among the described CPU.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. a portable set headset interface and serial communication interface transducer comprise a CPU, and it is characterized in that: described CPU connects a coding/decoding module and a string communication interface that works, and described coding/decoding module connects a headset interface.
2. portable set headset interface according to claim 1 and serial communication interface transducer, it is characterized in that: described coding/decoding module is DTMF module or FSK module.
3. portable set headset interface according to claim 1 and serial communication interface transducer, it is characterized in that: described serial communication interface comprises RS232 interface or RS422 interface.
4. portable set headset interface according to claim 1 and serial communication interface transducer is characterized in that: described CPU is connected with described coding/decoding module with the DA interface by the AD interface.
5. portable set headset interface according to claim 1 and serial communication interface transducer, it is characterized in that: described coding/decoding module is integrated among the described CPU.
6. portable set headset interface according to claim 1 and serial communication interface transducer, it is characterized in that: described portable set is mobile phone or flat board.
7. portable set headset interface according to claim 1 and serial communication interface transducer is characterized in that: also comprise a power module, with thinking described transducer power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320133511 CN203167246U (en) | 2013-03-22 | 2013-03-22 | Portable equipment earphone interface and serial communication interface converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320133511 CN203167246U (en) | 2013-03-22 | 2013-03-22 | Portable equipment earphone interface and serial communication interface converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203167246U true CN203167246U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320133511 Expired - Lifetime CN203167246U (en) | 2013-03-22 | 2013-03-22 | Portable equipment earphone interface and serial communication interface converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203167246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220599A (en) * | 2013-03-22 | 2013-07-24 | 福州欣联达电子科技有限公司 | Converting method and converter for portable device headset interface and serial communication interface |
-
2013
- 2013-03-22 CN CN 201320133511 patent/CN203167246U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220599A (en) * | 2013-03-22 | 2013-07-24 | 福州欣联达电子科技有限公司 | Converting method and converter for portable device headset interface and serial communication interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
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| CX01 | Expiry of patent term |