CN2870345Y - Hand-set with built-in mini-size sound-receiving module - Google Patents
Hand-set with built-in mini-size sound-receiving module Download PDFInfo
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- CN2870345Y CN2870345Y CNU200520066536XU CN200520066536U CN2870345Y CN 2870345 Y CN2870345 Y CN 2870345Y CN U200520066536X U CNU200520066536X U CN U200520066536XU CN 200520066536 U CN200520066536 U CN 200520066536U CN 2870345 Y CN2870345 Y CN 2870345Y
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- 230000004044 response Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000006996 mental state Effects 0.000 description 1
- 238000001387 multinomial test Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a mobile phone equipped with built-in mini radio module. The mobile phone comprises a shell and a main circuit board located in the shell. A baseband chip is arranged on the main circuit board, and a radio module is also arranged on the main circuit board; the radio module comprises FM chip and audio power amplifier circuit; the FM chip is connected with the baseband chip; the input end of the audio power amplifier circuit is connected with the FM chip; the output end links to the audio output circuit. The overall circuit of the utility model is relatively simple, and it only needs a few circuits to achieve all the functions of radio circuit. The mobile phone has small size, high security and low power consumption.
Description
[technical field]
The utility model relates to a kind of mobile phone, relates in particular to a kind of mobile phone with radio function.
[background technology]
Current after being busy with one's work, increasing urbanite is just tending to regulate life and the modular mental state that stylizes with the leisure type amusement.Wherein except the popular MP3 of young man, mobile phone, video disc player, the broadcast receiver that person in middle and old age doted on is still rather popular for this.And along with the popularizing of the progress of science and technology and mobile phone, the wireless function of this traditional amusement equipment is integrated into goes in the portable mobile phone, become a relatively more novel application and rather well received way.But existing mobile phone with radio function, but circuit is relatively complicated, cost is higher, because the integrated broadcast receiver of circuit complexity makes the volume of mobile phone become big, has influenced the portability of mobile phone simultaneously, disagrees with mobile phone miniaturization development trend.
[summary of the invention]
Main purpose of the present utility model is exactly in order to solve problems of the prior art, a kind of mobile phone of built-in mini radio reception module is provided, increase the function and the practicality of mobile phone, and reduce radio reception module shared space in mobile phone, do not influence the portability of mobile phone and the trend of miniaturization development.
For achieving the above object, the mobile phone of a kind of built-in mini radio reception module that the utility model proposes, comprise phone housing and the mobile phone main circuit board that is positioned at phone housing, described mobile phone main circuit board is provided with baseband chip, also be provided with the radio reception module on the described mobile phone main circuit board, described radio reception module comprises FM (frequency modulation) chip and audio power amplifier circuit, and described FM chip links to each other with baseband chip, the input of audio power amplifier circuit links to each other with the FM chip, and output is used for linking to each other with audio output circuit.
Preferably, described FM chip is a TEA5767HN FM chip.
Described TEA5767HN FM chip links to each other with baseband chip by the I2C bus.
Described audio output circuit is to be used for the output port that links to each other with earphone or loud speaker.
Preferably, also comprise the cellular phone power supplies administration module, described FM chip also links to each other with the power management module of mobile phone.
Further improvement of the present utility model is: also comprise the high frequency observation circuit and the electronic switching circuit that are used for detection of handset signal break-make, the output of described high frequency observation circuit links to each other with baseband chip, the signal of described electronic switching circuit response baseband chip is used for the control audio output circuit and switches between radio reception module and mobile phone speech passage.
Further improvement of the present utility model is: also comprise volume adjusting module, the output of described baseband chip response volume adjusting module is by FM chip controls audio power amplifier circuit.
The beneficial effects of the utility model are: 1) be convenient for carrying.The utility model adopts the FM chip that is integrated with the needed whole radio circuits of FM wave band broadcast receiver, the circuit of complexity is integrated in the chip, encapsulate minimum, volume can reach 6 * 6 * 0.85mm, and peripheral circuit is quite fairly simple, ignore so the volume of actual shared mobile phone cavity is approximate, thereby reduced the long-pending influence of adversary's body, be convenient for carrying.And integrated circuit is fairly simple, only can realize the repertoire that receiver circuit can be realized with less circuit.2) safe.The mini radio reception module that mobile phone of the present utility model is integrated is finished in design together with mobile phone, and can follow mobile phone before dispatching from the factory and carry out multinomial test together, safety and stability, radiationless substantially to human body.3) low in energy consumption.Adopt lithium ion battery or polymer battery in the mobile phone to power, peripheral circuit is very simple, and power consumption is very low, if the asynchronous use of other cell-phone functions can use the FM function more than 40 hours continuously.4) the convenient switching.When the user when listening to the radio, if the phone incoming call is arranged, then the broadcast receiver sound passage is automatically switched to the normal voice passage by electronic switching circuit, can guarantee that user's communication is not subjected to wireless influence this moment, and after voice pathway was hung up, the broadcast receiver path restarted to enable, the user can continue to listen the program of FM, thereby the unperturbed of having realized voice/FM switches, and for the user, such function is very practical.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the block diagram of a kind of embodiment of the present utility model;
Fig. 2 is the square frame connection layout of the electronic switching circuit of a kind of embodiment of the present utility model;
Fig. 3 is the radio reception flow chart of a kind of embodiment of the present utility model.
[embodiment]
As shown in Figure 1, be packaged with the mobile phone main circuit board in phone housing, be provided with baseband chip 1, power management module 4, radio reception module 2 at the mobile phone main circuit board, the radio reception module comprises FM chip 21 and audio power amplifier circuit 22, and FM chip 21 passes through I with baseband chip 1
2The C bus links to each other, and realizes the transmitted in both directions of data; The left and right acoustic channels input of audio power amplifier circuit 22 links to each other with FM chip 21, and output is used for linking to each other with audio output circuit 3.Power management module 4 is other module for power supply in baseband chip 1, radio reception module 2 and the mobile phone, voltage V
FMFor+3V, saved the power supply space, dwindled the volume of mobile phone.FM chip 21 can adopt the FM chip of the TEA5767HN model of Philips, and clock source 23 provides clock for FM chip 21, and frequency is 36.768Hz.Audio power amplifier circuit 22 also can adopt chip LM4811.The output port of audio output circuit 3 for being used for linking to each other with earphone or loud speaker, for example earphone jack is positioned on the phone housing.
When being in radio-receiving mode, FM chip 21 is by its antenna 24 received RF signals, and FM chip 21 and baseband chip 1 pass through I
2The C bus is carried out the transmitted in both directions of data, jointly radiofrequency signal is handled, and last FM chip 21 to audio power amplifier circuit 22, outputs to earphone or loud speaker through amplifying the back from audio output circuit 3 by the left and right acoustic channels output audio signal.
In order to realize the control of volume, designed volume control module 25, the output of baseband chip 1 response volume adjusting module 25 is by FM chip 2 output volume control signals, the multiplication factor of control audio power amplifier 22.Volume control module 25 can be designed as the button that is positioned on the phone housing, for further reducing the shared space of radio reception module, volume control module 25 usefulness software approachs realize that certain two button of setting on the cell phone keyboard are respectively V+ key that improves sound and the V-key that reduces sound.Under radio-receiving mode, by pressing V+ key or V-key, give 1 one high or low level of baseband chip, baseband chip 1 whenever receives a high or low level, also control corresponding level of FM chip 2 output, the multiplication factor of this level control audio power amplifier 22 improves on existing basis or reduces certain value, the sound of output is increased or reduces, continuously push V+ key or V-key, can realize the continuous increase of sound or subtract following.
The control program of function of radio receiver as shown in Figure 3.
As shown in table 1 for the test data of radio reception performance.
Table 1
| Test event | Parameter | The upper limit | Lower limit | Unit |
| Open FM | ON | 0 | 0 | - |
| Switch to the earphone L channel | left | 0 | 0 | - |
| Check the 88MHz frequency | 88，10mv | 1100 | 900 | Hz |
| Switch to the earphone R channel | right | 0 | 0 | - |
| Check the 107.9MHz frequency | 107.9，10mv | 1100 | 900 | Hz |
| Check the 95MHz frequency | 95，10mv | 1100 | 900 | Hz |
| Check the 100MHz frequency | 100，10mv | 1100 | 900 | Hz |
| Check the 105MHz frequency | 105，10mv | 1100 | 900 | Hz |
| Sensitivity test | 100，500uv | 1100 | 900 | Hz |
| Close FM | OFF | 0 | 0 | - |
Through detecting, the result is for all within scope.If but on production line, need to do actual adjustment.
In order not influence answering of cell phone incoming call, the high frequency observation circuit 5 and the electronic switching circuit 6 that link to each other with baseband chip 1 have respectively also been designed, as shown in Figure 2, high frequency observation circuit 5 is used for detection of handset signal break-make, the switch terminal of electronic switching circuit 6 connects radio reception module and mobile phone speech passage respectively, and output connects audio output circuit.When high frequency observation circuit 5 detects the mobile phone high-frequency signal, export first level signal to baseband chip 1, baseband chip 1 produces first control signal according to this signal, first control signal of electronic switching circuit 6 response baseband chips 1, control audio output circuit 3 switches to the mobile phone speech passage from the radio reception module, make audio output circuit 3 and mobile phone speech passage form path, at this moment the conversation signal of audio output circuit 3 output mobile phones.After high frequency observation circuit 5 detects the mobile phone high-frequency signal and is hung up, export second level signal to baseband chip 1, baseband chip 1 produces second control signal according to this signal, second control signal of electronic switching circuit 6 response baseband chips 1, control audio output circuit 3 switches to the radio reception module from the mobile phone speech passage, make audio output circuit 3 and radio reception module form path, the broadcast singal that this moment, audio output circuit 3 outputs were received.In this case, audio output circuit 3 can be shared by mobile phone and audio-frequency module, further saved taking up room of audio-frequency module.
In sum, the utility model is because of in conjunction with the mobile phone circuit Synchronization Design, fully overcome current common wireless maximization (mobile phone relatively), carried many defectives such as inconvenience and low-security, can guarantee that the user uses more than 40 hours continuously, and its design can be integrated in the mobile phone cavity, and compact conformation is not fragile, in case the input volume production can become one of current city upstart and student and the requisite portable instrument of outing fan soon.
Claims (7)
1. the mobile phone of a built-in mini radio reception module, comprise phone housing and the mobile phone main circuit board that is positioned at phone housing, described mobile phone main circuit board is provided with baseband chip, it is characterized in that: also be provided with the radio reception module on the described mobile phone main circuit board, described radio reception module comprises FM chip and audio power amplifier circuit, described FM chip links to each other with baseband chip, and the input of audio power amplifier circuit links to each other with the FM chip, and output is used for linking to each other with audio output circuit.
2. the mobile phone of built-in mini radio reception module as claimed in claim 1 is characterized in that: described FM chip is a TEA5767HN FM chip.
3. the mobile phone of built-in mini radio reception module as claimed in claim 2 is characterized in that: described TEA5767HN FM chip links to each other with baseband chip by the I2C bus.
4. the mobile phone of built-in mini radio reception module as claimed in claim 1 is characterized in that: described audio output circuit is to be used for the output port that links to each other with earphone or loud speaker.
5. as the mobile phone of each described built-in mini radio reception module in the claim 1 to 4, it is characterized in that: also comprise the cellular phone power supplies administration module, described FM chip also links to each other with the power management module of mobile phone.
6. the mobile phone of built-in mini radio reception module as claimed in claim 5, it is characterized in that: also comprise the high frequency observation circuit and the electronic switching circuit that are used for detection of handset signal break-make, the output of described high frequency observation circuit links to each other with baseband chip, the signal of described electronic switching circuit response baseband chip is used for the control audio output circuit and switches between radio reception module and mobile phone speech passage.
7. the mobile phone of built-in mini radio reception module as claimed in claim 6 is characterized in that: also comprise volume adjusting module, the output of described baseband chip response volume adjusting module is by FM chip controls audio power amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520066536XU CN2870345Y (en) | 2005-10-26 | 2005-10-26 | Hand-set with built-in mini-size sound-receiving module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520066536XU CN2870345Y (en) | 2005-10-26 | 2005-10-26 | Hand-set with built-in mini-size sound-receiving module |
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| Publication Number | Publication Date |
|---|---|
| CN2870345Y true CN2870345Y (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520066536XU Expired - Fee Related CN2870345Y (en) | 2005-10-26 | 2005-10-26 | Hand-set with built-in mini-size sound-receiving module |
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| CN (1) | CN2870345Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024127A (en) * | 2012-12-31 | 2013-04-03 | 上海华勤通讯技术有限公司 | Volume adjusting device |
-
2005
- 2005-10-26 CN CNU200520066536XU patent/CN2870345Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024127A (en) * | 2012-12-31 | 2013-04-03 | 上海华勤通讯技术有限公司 | Volume adjusting device |
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| Date | Code | Title | Description |
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| 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: 20070214 Termination date: 20111026 |