CN107786688B - Mobile terminal with interphone function - Google Patents
Mobile terminal with interphone function Download PDFInfo
- Publication number
- CN107786688B CN107786688B CN201610743632.6A CN201610743632A CN107786688B CN 107786688 B CN107786688 B CN 107786688B CN 201610743632 A CN201610743632 A CN 201610743632A CN 107786688 B CN107786688 B CN 107786688B
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- Prior art keywords
- radio frequency
- interphone
- mobile communication
- communication module
- communication mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0254—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The present invention provides a mobile terminal having a interphone function, the mobile terminal comprising: the radio frequency transceiver comprises a baseband processing chip, a radio frequency transceiver and a radio frequency front-end device, wherein the baseband processing chip is connected with the radio frequency transceiver, the radio frequency transceiver is connected with the radio frequency front-end device, the baseband processing chip comprises a mobile communication module and an interphone communication module, and the mobile communication module and the interphone communication module share the radio frequency transceiver and the radio frequency front-end device. The invention can support two functions of interphone function and mobile communication function, and realize the switch between interphone communication mode and mobile communication mode.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a mobile terminal with an interphone function.
Background
The mobile communication terminal has been deeply integrated into our economic and social lives, and a new means is added for improving the living standard of people. Today's mobile communication terminals not only can make a call, take a picture, listen to music, play games, but also have rich functions including positioning, information processing, etc. The current mobile communication terminal needs one or more network standards of 2G, 3G and 4G for support, and the conversation and information transfer can not be supported by the network.
The interphone is mainly applied to the industries of public security, civil aviation, transportation, building, service and the like, is used for communication and command scheduling among group members, and can realize high-efficiency communication and quick response of handling emergency events. As walkie-talkies enter the domestic market, people are also starting to use walkie-talkies more and more. Compared with a mobile communication terminal, the interphone can directly talk without any network support, does not generate telephone charge, and is suitable for relatively fixed places with frequent talking.
In the process of implementing the invention, the inventor finds that at least the following technical problems exist in the prior art:
the existing interphone terminal and the mobile communication terminal are two independent product types, each product can only support one of an interphone function and a mobile communication function, and the switching between an interphone communication mode and a mobile communication mode cannot be realized.
Disclosure of Invention
The mobile terminal with the interphone function provided by the invention can support the interphone function and the mobile communication function, and realizes the switching between the interphone communication mode and the mobile communication mode.
The present invention provides a mobile terminal having a function of a interphone, the terminal comprising: the radio frequency transceiver comprises a baseband processing chip, a radio frequency transceiver and a radio frequency front-end device, wherein the baseband processing chip is connected with the radio frequency transceiver, the radio frequency transceiver is connected with the radio frequency front-end device, the baseband processing chip comprises a mobile communication module and an interphone communication module, and the mobile communication module and the interphone communication module share the radio frequency transceiver and the radio frequency front-end device.
Optionally, the mobile terminal includes a mobile communication mode and an intercom communication mode, and the terminal further includes a mode switch, which is connected to the mobile communication module and the intercom communication module and is configured to select a mobile communication mode or an intercom communication mode.
Optionally, the radio frequency front-end device includes a power amplifier, a filter, a switch, and an antenna, and frequency bands of the power amplifier, the filter, the switch, and the antenna cover an operating frequency band of an intercom communication mode and an operating frequency band of a mobile communication mode.
Optionally, the operating frequency band of the radio frequency transceiver covers an operating frequency band of an intercom communication mode and an operating frequency band of a mobile communication mode.
Optionally, the mobile communication device further comprises a display component, a keyboard, an earphone, a microphone, a battery, a microphone and an LED lamp which are shared by the mobile communication module and the interphone communication module.
Optionally, the baseband processing chip controls the use of the display component, keyboard, earpiece, microphone, battery, microphone, and LED light.
Optionally, the mobile communication system further comprises a detection module, configured to control the mode switch to select the intercom communication mode to operate when the mobile communication network signal is not good.
The mobile terminal with the interphone function provided by the embodiment of the invention comprises a baseband processing chip, a radio frequency transceiver and a radio frequency front-end device, wherein the baseband processing chip comprises a mobile communication module and an interphone communication module, and the mobile communication module and the interphone communication module share the radio frequency transceiver and the radio frequency front-end device. The invention integrates the interphone terminal and the mobile communication terminal into a terminal with dual modes, can support two functions of interphone and mobile communication, and realizes the switching between the interphone communication mode and the mobile communication mode.
Drawings
Fig. 1 is a circuit diagram of a mobile communication terminal in the prior art;
FIG. 2 is a circuit diagram of a prior art interphone;
fig. 3 is a circuit diagram of a mobile terminal having an intercom function according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a baseband processing chip and an rf transceiver chip of a mobile terminal with intercom function according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a circuit diagram of a conventional mobile communication terminal, and the main components include an antenna, a single-pole multi-throw switch, a high-performance filter, a power amplifier, a mobile communication radio frequency transceiver chip, and a baseband processing chip. And the baseband processing chip is connected with the mobile communication radio frequency transceiver chip and is used for outputting the modulated signal. And the mobile communication radio frequency transceiver chip is used for converting the modulated signals into radio frequency signals. And the power amplifier is connected with the mobile communication radio frequency transceiver chip, amplifies the radio frequency signal according to the set parameters and transmits the radio frequency signal through the antenna. The baseband processing chip is also connected with the power amplifier and the switch and used for generating a control signal. The filter is connected with the switch and the mobile communication radio frequency transceiver chip and is used for filtering the signals received by the antenna.
The radio frequency receiving circuit, the radio frequency transmitting circuit, the baseband processing circuit and the like of the interphone have the same or similar parts with the mobile communication terminal, and the like, as shown in fig. 2. The main devices comprise an antenna, a single-pole multi-throw switch, a high-performance filter, a power amplifier, an interphone radio frequency transceiver chip and a baseband processing chip. The implementation function of each device is similar to that of each device in the mobile communication terminal. The intercom communication mode transmission In fig. 2 uses a two-point modulation transmission interface, and also uses IQ (In phase and Quadrature Signal) interfaces. Usually, the modulation signal is applied to a VCO (Voltage Controlled Oscillator) of a PLL (Phase Locked Loop) frequency synthesizer, but its inherent Loop high-pass characteristic causes a loss of low-frequency components of the modulation signal. In order to obtain a more ideal modulation characteristic, the interphone adopts a direct frequency modulation technology called two-point modulation. In this technique, the modulation signal is divided into two parts, one part being applied to the VCO side of the PLL according to conventional frequency modulation, and the other part being applied to the main oscillator side of the PLL.
Because the radio frequency receiving circuit, the radio frequency transmitting circuit, the baseband processing circuit and the like of the interphone have the same or similar parts with the mobile communication terminal, the mobile communication terminal and the interphone terminal can share a hardware circuit. The invention realizes a dual-mode terminal which supports both the mobile communication function and the interphone function by adopting the method.
The present invention provides a mobile terminal having a walkie-talkie function, as shown in fig. 3, the terminal includes: a baseband processing chip, a radio frequency transceiver, and a radio frequency front end device, which mainly includes a power amplifier, a filter, a switch, and an antenna in fig. 3. The baseband processing chip is connected with the radio frequency transceiver and used for outputting modulated signals. The radio frequency transceiver is connected with the radio frequency front-end device, specifically connected with a power amplifier and a filter of the radio frequency front-end device, and is used for converting the modulated signals into radio frequency signals. And the power amplifier is connected with the radio frequency transceiver chip and used for amplifying the radio frequency signal according to the set parameters and then transmitting the radio frequency signal through the antenna. The baseband processing chip is also connected with the power amplifier and the switch and used for generating a control signal. The filter is connected with the switch and the radio frequency transceiver chip and is used for filtering the signals received by the antenna. As shown in fig. 4, the baseband processing chip includes a mobile communication module and an intercom communication module, and the mobile communication module and the intercom communication module share the radio frequency transceiver and the radio frequency front end device. The radio frequency transceiver and the baseband processing chip transmit baseband signals through IQ signals. When the interphone is in an interphone communication mode, the digitally filtered signals enter the interphone module to be processed. The modulation, demodulation and protocol stack of the interphone are all processed in the interphone communication module. When the mobile phone is in a normal mobile phone mode, the signal enters the mobile communication module for processing after digital filtering.
The mobile terminal with the interphone function provided by the embodiment of the invention comprises a baseband processing chip, a radio frequency transceiver and a radio frequency front-end device, wherein the baseband processing chip comprises a mobile communication module and an interphone communication module, and the mobile communication module and the interphone communication module share the radio frequency transceiver and the radio frequency front-end device. The invention integrates the interphone terminal and the mobile communication terminal into a terminal with dual modes, can support two functions of interphone and mobile communication, and realizes the switching between the interphone communication mode and the mobile communication mode.
Optionally, the mobile terminal includes a mobile communication mode and an intercom communication mode, and the terminal further includes a mode switch, which is connected to the mobile communication module and the intercom communication module and is configured to select a mobile communication mode or an intercom communication mode. And arranging a button similar to a WIFI switch at an MMI layer (man-machine interface) of the mobile phone terminal. When the mode switch is switched to the interphone module, the interphone communication mode is entered, the mobile communication mode is closed, and when the mode switch is switched to the mobile communication module, the interphone communication mode is closed, the interphone communication mode is entered into the normal communication mode.
Optionally, the radio frequency front-end device includes a power amplifier, a filter, a switch, and an antenna, and frequency bands of the power amplifier, the filter, the switch, and the antenna cover an operating frequency band of an intercom communication mode and an operating frequency band of a mobile communication mode. Optionally, the operating frequency band of the radio frequency transceiver covers an operating frequency band of an intercom communication mode and an operating frequency band of a mobile communication mode. The frequency of the interphone is 400-470MHz, the power amplifier, the switch and the filter on the existing communication terminal do not support the frequency bands, the power amplifier, the switch and the filter are designed into a wide frequency band, and the filter is designed again, so that the interphone can support 400-470 MHz. . Secondly, the radio frequency transceiver is also designed into a wide frequency band, so that the radio frequency transceiver can support the frequency band of the interphone.
Optionally, the mobile communication device further comprises a display component, a keyboard, an earphone, a microphone, a battery, a microphone and an LED lamp which are shared by the mobile communication module and the interphone communication module. Optionally, the baseband processing chip controls the use of the display component, keyboard, earpiece, microphone, battery, microphone, and LED light. The battery, the microphone, the display screen and the keyboard are all public resources, the microphone, the display screen and the keyboard are all controlled by the baseband processing chip, and when a user uses the function of the interphone, the resources can be reused.
Optionally, the mobile communication system further comprises a detection module, configured to control the mode switch to select the intercom communication mode to operate when the mobile communication network signal is not good.
The invention integrates the interphone terminal and the mobile communication terminal into a terminal with dual modes. The terminal has the following advantages: the interphone part can multiplex peripheral equipment of the mobile communication terminal, such as a battery, a microphone, an LED lamp and other elements; the mobile communication module and the interphone communication module are arranged in the same baseband processing chip, so that an additional interphone baseband processing chip is not needed; the interphone part can reuse a display screen and a keyboard of the mobile communication terminal, so that the state of the interphone is conveniently displayed and adjusted; the mobile communication module and the interphone communication module share the same set of radio frequency front-end device. The interphone communication mode of the dual-mode terminal does not need network support and generates no cost, a one-to-one and one-to-many communication mode can be provided, and once the interphone communication mode is used, the interphone communication mode is simple to operate and can play an important role especially under the conditions of emergency dispatching and collective cooperation work.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A mobile terminal having an intercom function, comprising: the system comprises a baseband processing chip, a radio frequency transceiver and a radio frequency front-end device, wherein the baseband processing chip is connected with the radio frequency transceiver, the radio frequency transceiver is connected with the radio frequency front-end device, the baseband processing chip comprises a mobile communication module and an interphone communication module, and the mobile communication module and the interphone communication module share the radio frequency transceiver and the radio frequency front-end device;
the mobile terminal has two working modes of a mobile communication mode and an interphone communication mode, and further comprises a mode selector switch which is connected with the mobile communication module and the interphone communication module and is used for selecting the mobile communication mode or the interphone communication mode to work;
the mobile terminal also comprises a detection module used for controlling the mode selector switch to select the interphone communication mode to work when the mobile communication network signal is not good;
the radio frequency front-end device comprises a power amplifier, a filter, a switch and an antenna, wherein the frequency bands of the power amplifier, the filter, the switch and the antenna cover the working frequency band of the interphone communication mode and the working frequency band of the mobile communication mode.
2. The mobile terminal with intercom function of claim 1, wherein said radio frequency transceiver has an operating frequency band covering an operating frequency band of intercom communication mode and an operating frequency band of mobile communication mode.
3. The mobile terminal with interphone function of claim 1, further comprising a display part, a keyboard, an earphone, a microphone, a battery, a microphone and an LED lamp which are shared by the mobile communication module and the interphone communication module.
4. The intercom-enabled mobile terminal as in claim 3 wherein said baseband processing chip controls the use of said display unit, keypad, earpiece, microphone, battery, microphone and LED light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610743632.6A CN107786688B (en) | 2016-08-26 | 2016-08-26 | Mobile terminal with interphone function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610743632.6A CN107786688B (en) | 2016-08-26 | 2016-08-26 | Mobile terminal with interphone function |
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| CN107786688A CN107786688A (en) | 2018-03-09 |
| CN107786688B true CN107786688B (en) | 2020-12-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108990173A (en) * | 2018-08-10 | 2018-12-11 | 北京小米移动软件有限公司 | Data transmission method and device |
| CN109361409B (en) * | 2018-12-05 | 2020-11-03 | 京信通信系统（中国）有限公司 | Radio frequency system capable of effectively optimizing noise coefficient |
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| CN101662845A (en) * | 2008-08-28 | 2010-03-03 | 展讯通信（上海）有限公司 | Method for switching speaking right in mobile terminal talkback communication |
| CN101860620A (en) * | 2010-05-06 | 2010-10-13 | 中兴通讯股份有限公司 | Mobile terminal and communication method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060217105A1 (en) * | 2005-03-25 | 2006-09-28 | Siemens Communications, Inc. | Method and system to provide location and multimedia data using a wireless device |
| CN101102571B (en) * | 2007-07-25 | 2010-06-02 | 中兴通讯股份有限公司 | Mobile terminal and multiplexing system of interphone |
| CN201878199U (en) * | 2010-06-12 | 2011-06-22 | 深圳市力同亚太科技有限公司 | Interphone with functions of mobile phone |
| CN103051352A (en) * | 2012-12-14 | 2013-04-17 | 上海集成电路研发中心有限公司 | Multimode multifrequency transceiver |
| CN203352632U (en) * | 2013-07-17 | 2013-12-18 | 深圳市百特连通科技有限公司 | Mobile communication terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662845A (en) * | 2008-08-28 | 2010-03-03 | 展讯通信（上海）有限公司 | Method for switching speaking right in mobile terminal talkback communication |
| CN101860620A (en) * | 2010-05-06 | 2010-10-13 | 中兴通讯股份有限公司 | Mobile terminal and communication method thereof |
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