CN106375256A - Frequency modulating device of handheld mobile equipment - Google Patents
Frequency modulating device of handheld mobile equipment Download PDFInfo
- Publication number
- CN106375256A CN106375256A CN201610763305.7A CN201610763305A CN106375256A CN 106375256 A CN106375256 A CN 106375256A CN 201610763305 A CN201610763305 A CN 201610763305A CN 106375256 A CN106375256 A CN 106375256A
- Authority
- CN
- China
- Prior art keywords
- signal
- baseband chip
- input
- module
- handheld mobile
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/16—Frequency regulation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The invention provides a frequency modulating device of handheld mobile equipment. The frequency modulating device comprises a frequency module and a baseband chip; the input end of the baseband chip is provided with an input channel, the frequency modulating module can finish a frequency modulating function through the control of the baseband chip; and the device further comprises a signal filtering and amplifying circuit to finish the receiving and de-noising function of the signal. Through the above mentioned mode, the frequency modulating device of the handheld mobile equipment provided by the embodiment of the invention can overcome the defects of the existing frequency modulating circuit, and the terminal function is expanded; the signal can be sent to a opposite side of the conversation through a communication channel, and the communication signal can be stored and recorded; and the hardware base is provided for realizing more functions.
Description
Technical field
The present invention relates to moving communicating field, more particularly to a kind of frequency modulation device of handheld mobile device.
Background technology
Frequency modulation (fm) function on mobile terminals integrated has great convenience for the user, and market has had considerable handss
Equipment is for fm function.Current fm circuit typically adopts fm chip to produce fm audio signal, exports after amplifying through audio frequency power amplifier
To audio output apparatus (as speaker, earphone etc.).
Existing terminal can only be realized simple fm and listen to playing function it is impossible to record fm voice.Although there being base band core
Piece, but audio signal can only give special sound processing chip to process it is impossible to be delivered on baseband chip, thus limiting
The function of mobile phone.
Content of the invention
The invention mainly solves the technical problem of providing a kind of frequency modulation device of handheld mobile device, enable to base band
Chip can participate in the process of audio signal.
For solving above-mentioned technical problem, one aspect of the present invention is: a kind of frequency modulation of handheld mobile device
Device is it is characterised in that include: FM module and baseband chip, the input of described baseband chip is provided with input channel, described
FM module completes frequency modulation function by the control of described baseband chip；Also include signal filtering and amplifying circuit, complete signal
Reception and except the function made an uproar.
Described baseband chip is connected with described outut device, and described FM signal is sent to described defeated by described baseband chip
Go out equipment, described outut device is used for for the FM signal receiving being converted to corresponding image or acoustical signal.
Preferably, the input channel of described baseband chip is provided with switch, the input of described switch connects input and leads to
Input equipment on road and FM module, outfan connects baseband chip；The described tune switching for selecting access FM module
The input signal of frequency signal or input equipment is to described baseband chip.
Preferably, described FM module includes carrier oscillator, buffer agent, phase converter and integrator, now by modulated signal
It is integrated processing, then controls the instantaneous phase change of carrier wave with the modulated signal after integration, thus realizing controlling carrier wave
Frequency of taking advantage of a situation changes.
It is different from the situation of prior art, the invention has the beneficial effects as follows: the defect of the existing FM circuit overcoming, extension
Termination function, can either send signal to partner using communication channel, be capable of the storage to signal of communication again
Record, and provide hardware foundation for realizing more functions.
Brief description
Fig. 1 is the schematic diagram of the frequency modulation device of embodiment of the present invention handheld mobile device.
Fig. 2 is embodiment of the present invention FM module structural representation.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Referring to a kind of frequency modulation device of handheld mobile device of Fig. 1 it is characterised in that including: FM module and baseband chip,
The input of described baseband chip is provided with input channel, and described FM module completes frequency modulation work(by the control of described baseband chip
Energy；Also include signal filtering and amplifying circuit, complete the reception of signal and except the function of making an uproar.
Described baseband chip is connected with described outut device, and described FM signal is sent to described defeated by described baseband chip
Go out equipment, described outut device is used for for the FM signal receiving being converted to corresponding image or acoustical signal.
Switch is provided with the input channel of described baseband chip, defeated in the input connection input channel of described switch
Enter equipment and FM module, outfan connects baseband chip；Described switch for select access FM module FM signal or
The input signal of person's input equipment is to described baseband chip.
Described FM module includes carrier oscillator, buffer agent, phase converter and integrator as shown in Figure 2, now by modulation letter
Number it is integrated processing, then controls the instantaneous phase change of carrier wave with the modulated signal after integration, thus realizing controlling carrier wave
Take advantage of a situation frequency change.As it was previously stated, frequency-modulated wave can regard the phase-modulated wave after integrating modulated signal as, so, phase modulation exports
It is phase-modulated wave for modulated signal after signal relative integral, but be then frequency-modulated wave for former modulated signal.This realization is adjusted
The circuit of phase independent of high frequency carrier agitator outside, so this frequency-modulated wave good stability.
By the way, the existing frequency modulation electricity that the frequency modulation device of the handheld mobile device of the embodiment of the present invention can overcome
The defect on road, extends termination function, can either send signal to partner using communication channel, is capable of to logical again
The storage record of letter signal, and provide hardware foundation for realizing more functions.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (3)
1. a kind of frequency modulation device of handheld mobile device is it is characterised in that include: FM module and baseband chip, described base band
The input of chip is provided with input channel, and described FM module completes frequency modulation function by the control of described baseband chip；Also wrap
Include signal filtering and amplifying circuit, complete the reception of signal and except the function of making an uproar；
Described baseband chip is connected with described outut device, and described FM signal is sent to described output and sets by described baseband chip
Standby, described outut device is used for for the FM signal receiving being converted to corresponding image or acoustical signal.
2. handheld mobile device according to claim 1 frequency modulation device it is characterised in that: the input of described baseband chip
Switch is provided with passage, the input of described switch connects input equipment and FM module in input channel, outfan is even
Connect baseband chip；Described switch for the input signal selecting to access the FM signal of FM module or input equipment to described
Baseband chip.
3. handheld mobile device according to claim 1 frequency modulation device it is characterised in that: described FM module include carry
Modulated signal first is integrated processing by wave oscillator, buffer agent, phase converter and integrator, then with the modulation letter after integration
Number control carrier wave instantaneous phase change, thus realize control carrier wave take advantage of a situation frequency change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763305.7A CN106375256A (en) | 2016-08-30 | 2016-08-30 | Frequency modulating device of handheld mobile equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763305.7A CN106375256A (en) | 2016-08-30 | 2016-08-30 | Frequency modulating device of handheld mobile equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106375256A true CN106375256A (en) | 2017-02-01 |
Family
ID=57901419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610763305.7A Withdrawn CN106375256A (en) | 2016-08-30 | 2016-08-30 | Frequency modulating device of handheld mobile equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106375256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784799A (en) * | 2019-10-29 | 2020-02-11 | 中国电子科技集团公司第四十一研究所 | Sound directional transmission method and system |
-
2016
- 2016-08-30 CN CN201610763305.7A patent/CN106375256A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784799A (en) * | 2019-10-29 | 2020-02-11 | 中国电子科技集团公司第四十一研究所 | Sound directional transmission method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170201 |