CN1874367A - Nandset of possessing function of interphone - Google Patents
Nandset of possessing function of interphone Download PDFInfo
- Publication number
- CN1874367A CN1874367A CN200610061142.4A CN200610061142A CN1874367A CN 1874367 A CN1874367 A CN 1874367A CN 200610061142 A CN200610061142 A CN 200610061142A CN 1874367 A CN1874367 A CN 1874367A
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- CN
- China
- Prior art keywords
- mobile phone
- chip
- modulation
- baseband processing
- transmitter module
- 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.)
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- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The invention comprises a FM modulation and radiation module and a FM receiving module. The FM modulation and radiation module is connected to the baseband processor in order to receive the voice signal and to modulate and radiate it. The FM receiving module is connected to the baseband processor in order to receive the signal from the FM modulation and radiation module and to demodulate and play it. The invention can be used to make communication between multi communicators.
Description
[technical field]
The present invention relates to a kind of mobile phone, particularly a kind of mobile phone with intercom function.
[background technology]
At present, mobile phone has become communicator commonly used in people's life.The radio communication function of mobile phone makes the user have place that signal covers and other people to converse any, for people's life offers convenience.
But for certain customers, its conversation object is usually fixed, and the actual distance of correspondent is very not far away, just is difficult to carry out aspectant interchange owing to other factors, as is operated in the businessman of computer market, the different guards that import and export of same company etc.If still use this moment mobile phone carry out by because conversation is frequent, can increase corresponding cost; And conversation instruments such as employing intercom then must carry an extra means of communication, bring inconvenience.
Therefore, be necessary to provide a kind of intercommunication function that has, can realize the mobile phone of closely no-charge call.
[summary of the invention]
Technical problem to be solved by this invention is to provide a kind of mobile phone, particularly a kind of mobile phone with intercom function.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of mobile phone with intercom function, can carry out far and near distance communication in a different manner, this mobile phone comprises a FM modulation and a transmitter module and a FM receiver module, this FM modulation is connected with the baseband processing chip of mobile phone with transmitter module, receive the user's voice signal, and carry out modulate emission, this FM receiver module, be connected with the baseband processing chip of described mobile phone, receive the signal of frequency modulation modulation and transmitter module emission, and carry out demodulation and play.
Technical scheme of the present invention practicable many people converse simultaneously, can satisfy the use needs of multiple occasions such as family's contact, enterprise's regulation and control, tourism, hotel, and it constitutes simple, and is with low cost.
[description of drawings]
Fig. 1 is the wireless playing method of handset audio of the present invention and the fundamental block diagram of system.
Fig. 2 is that FM modulation of the present invention is connected block diagram with the chip of transmitter module.
[embodiment]
The invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1, the present invention has increased FM (Frequency Modulation, frequency modulation) modulation and transmitter module, the FM receiver module on the basis of original structure of general mobile phone.
The baseband processing chip control FM modulation and the transmitter module of mobile phone are launched in the mode of frequency modulation voice by antenna, receive the FM signal that other mobile phone with identical function sends by the FM receiver module again.
See also Fig. 2, this FM modulation mainly is made up of chip NS73M-51AU-01F1 and some peripheral circuits with transmitter module.Wherein, the clock generator of the baseband processing chip of mobile phone is connected to the X1 pin of chip, and the control system of the baseband processing chip of mobile phone is connected to the CK of chip, DA, LA pin, and by iic bus chip is controlled.
Its operation principle is: user's voice signal is imported by mobile phone microphone, and is sent to the L of chip
IN(L channel input) and R
IN(R channel input) end carries out analog-to-digital conversion in regular turn at chip internal then, low-pass filtering, and preposition amplification, the FM modulation, digital-to-analogue conversion, frequency synthesis, power amplification, the processing of low-pass filtering is output as RF (radio frequency) signal, is launched by antenna at last.
This FM receiver module mainly is made up of chip NS953B1BP32-01 and some peripheral circuits.Its operation principle is: antenna for mobile phone receives the signal of above-mentioned FM modulation and transmitter module emission, and carry out high frequency in regular turn at chip internal then and amplify, mixing, intermediate frequency amplifies, intermediate frequency filtering, detection, demodulation, low frequency amplifies, and carries out voice output by earpiece at last.
Technical scheme of the present invention practicable many people converse simultaneously, and the distance of its intercommunication conversation is about 100-150 rice, can satisfy the use needs of multiple occasions such as family's contact, enterprise's regulation and control, tourism, hotel.And constitute simple, with low cost.
Claims (4)
1, a kind of mobile phone with intercom function is used for carrying out in a different manner far and near distance communication, it is characterized in that described mobile phone comprises:
Modulation of one frequency modulation and transmitter module are connected with the baseband processing chip of described mobile phone, receive the user's voice signal, and carry out modulate emission;
One FM reception module is connected with the baseband processing chip of described mobile phone, receives the signal of described frequency modulation modulation and transmitter module emission, and carries out demodulation and play.
2, the mobile phone with intercom function as claimed in claim 1 is characterized in that, described frequency modulation modulation is made up of chip NS73M-51AU-01F1 and peripheral circuit with transmitter module.
3, the mobile phone with intercom function as claimed in claim 1 is characterized in that, described FM reception module is made up of chip NS953B1BP32-01 and peripheral circuit.
4, the mobile phone with intercom function as claimed in claim 2, it is characterized in that, the clock generator of the baseband processing chip of described mobile phone is connected to the X1 pin of described chip, the control system of the baseband processing chip of described mobile phone is connected to CK, DA, the LA pin of described chip, and by iic bus described chip is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610061142.4A CN1874367A (en) | 2006-06-15 | 2006-06-15 | Nandset of possessing function of interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610061142.4A CN1874367A (en) | 2006-06-15 | 2006-06-15 | Nandset of possessing function of interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1874367A true CN1874367A (en) | 2006-12-06 |
Family
ID=37484622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610061142.4A Pending CN1874367A (en) | 2006-06-15 | 2006-06-15 | Nandset of possessing function of interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1874367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622949A (en) * | 2011-01-26 | 2012-08-01 | 北京昆天科微电子技术有限公司 | Wireless tour guide system |
-
2006
- 2006-06-15 CN CN200610061142.4A patent/CN1874367A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622949A (en) * | 2011-01-26 | 2012-08-01 | 北京昆天科微电子技术有限公司 | Wireless tour guide system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |