CN201207643Y - A frequency modulation transmitter - Google Patents

Abstract

The utility model discloses a frequency modulation emitter, the device includes: the receiving unit is used for receiving the audio signal of the mobile phone; the frequency modulation unit is used for converting the audio signal received by the receiving unit into a frequency modulation signal; and the transmitting unit is used for transmitting the frequency modulation signal obtained by the frequency modulation unit to a frequency modulation radio. The audio signal of the mobile phone is played through the FM radio, when a user drives a car, the music stored in the mobile phone can be played through the vehicle-mounted radio, and when the user makes a call, the voice of the opposite user can be played through the vehicle-mounted radio, so that the hands-free function is realized, and the mobile phone is convenient and safe. When a user is at home, the audio signal of the mobile phone is played through the FM radio in offices and the like, and hands-free conversation of the mobile phone can be realized, so that the practicability of the mobile phone is improved.

Description

A frequency modulation transmitter

technical field

The utility model relates to the technical field of communication, in particular to a frequency modulation transmitting device.

Background technique

With the continuous development of communication technology, people have more and more personalized demands for mobile phones. In addition to the function of calling, mobile phones often also store a lot of audio and video files for users to enjoy. When people are driving, if they need to enjoy the audio files in the mobile phone or the music in the video files, they need to use earphones. However, after wearing earphones, it will affect driving safety and cause traffic accidents. Therefore, a safer, A device for enjoying mobile music more conveniently.

Utility model content

The embodiment of the utility model provides a frequency modulation transmitting device, which can enjoy music in a mobile phone more safely and conveniently.

The embodiment of the utility model provides a frequency modulation transmitting device, which includes:

The receiving unit is used to receive the audio signal of the mobile phone;

a frequency modulation unit, configured to convert the audio signal received by the receiving unit into a frequency modulation signal;

The transmitting unit is used to send the FM signal obtained by the FM unit to the FM radio.

The unit also includes:

The wireless receiving unit is used to receive the user's audio signal and send it to the microphone of the mobile phone.

The wireless receiving unit is a microphone.

The receiving unit includes:

The first receiving subunit is used for receiving audio signals from the charging/data interface of the mobile phone.

The first receiving subunit is a first Samsung dedicated interface, which is used to be connected with the charging/data interface of the Samsung music phone;

Or, the first receiving subunit is a first LG dedicated interface, which is used to connect with the charging/data interface of the LG music phone;

Or, the first receiving subunit is a first Nokia dedicated interface, which is used to connect with the charging/data interface of the Nokia music phone;

Or, the first receiving subunit is a first Sony Ericsson dedicated interface, which is used to connect with the charging/data interface of the Sony Ericsson music phone;

Alternatively, the first receiving subunit is a first Motorola-specific interface for connecting with the charging/data interface of the Motorola music phone.

The receiving unit includes:

The second receiving subunit is used to receive audio signals from the handset of the mobile phone;

The third receiving subunit is used for receiving audio signals from the earphone of the mobile phone.

The unit also includes:

The display unit is used to connect with the frequency modulation unit and display the frequency modulated by the frequency modulation unit.

The device also includes

The control unit is used to connect with the sending unit and control the frequency corresponding to the sending unit.

The unit also includes:

The power supply unit is used to supply power to the FM transmitting device.

The power supply unit includes:

The first power supply subunit is used to obtain electric energy from the charging/data interface of the mobile phone.

The first power supply subunit is a second Samsung dedicated interface, which is used to be connected with the charging/data interface of the Samsung music phone;

Or, the first power supply subunit is a second LG dedicated interface, which is used to connect with the charging/data interface of the LG music phone;

Or, the first power supply subunit is a second Nokia dedicated interface, which is used to connect with the charging/data interface of the Nokia music phone;

Or, the first power supply subunit is a second Sony Ericsson dedicated interface, which is used to connect with the charging/data interface of the Sony Ericsson music phone;

Alternatively, the first power supply subunit is a second Motorola-specific interface, which is used to connect with the charging/data interface of the Motorola music phone.

The first Samsung-specific interface and the second Samsung-specific interface are integrally formed.

The power supply unit also includes:

The second power supply subunit is used for connecting with a DC power supply or a cigarette lighter.

The unit also includes:

The storage unit is configured to be connected with the frequency modulation unit, and store the frequency modulated by the frequency modulation unit.

The unit also includes:

One end of the portable unit is used to be fixed on the shell of the FM transmitting device, and the other end is used to be fixed on the shell of the mobile phone.

The unit also includes:

A switch unit is used to connect between the power supply unit and the receiving unit, and disconnect the power supply unit from the receiving unit when the input of the power supply unit is lower than the rated voltage.

Adopt the FM transmitting device of the utility model to play the audio signal of the mobile phone through the FM radio. When the user is driving, the music stored in the mobile phone can be played through the car radio. Realize the function of hands-free, which is convenient and safe. When the user is at home, the FM transmitting device of the present utility model can also be used to play the audio signal of the mobile phone through a household FM (FM) radio, so that the user can enjoy the music in the mobile phone in every corner of the home, or can Realize the hands-free call of the mobile phone at home, similarly, in places such as offices, also can adopt the FM transmitting device of the present utility model, the audio signal of the mobile phone is played through the FM radio, can also realize the hands-free call of the mobile phone, and then improve the mobile phone practicality.

Description of drawings

Fig. 1 is a schematic structural diagram of an FM transmitting device in Embodiment 1 of the present utility model;

Figure 2 is a schematic diagram of the composition of the FM transmitting device of Embodiment 2 of the present utility model;

Fig. 3 shows the circuit diagram of the receiving unit, the wireless receiving unit and the switch unit in the second embodiment of the utility model;

Fig. 4 shows the circuit diagram of the frequency modulation unit and the transmitting unit in the second embodiment of the utility model;

Fig. 5 shows the circuit diagram of the storage unit and the control unit in the second embodiment of the utility model;

Fig. 6 shows the circuit diagram of the display unit in the second embodiment of the utility model;

Figure 7a shows the front view of the FM transmitting device used in conjunction with the Samsung music mobile phone in Embodiment 2 of the present invention;

Figure 7b shows the rear view of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the present invention;

Fig. 7c is a top view of the FM transmitting device used in cooperation with the Samsung music mobile phone in the second embodiment of the present utility model;

Figure 7d shows the left side view of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the utility model;

Figure 7e shows the right side view of the FM transmitting device used in conjunction with the Samsung music mobile phone in Embodiment 2 of the present invention;

Figure 7f shows the bottom view of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the present invention;

Figure 8a shows a schematic structural diagram of a Samsung music phone;

Figure 8b shows a stereogram one of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the present invention;

Figure 8c is a schematic diagram showing the cooperation between the FM transmitting device and the Samsung music mobile phone in the second embodiment of the utility model;

Fig. 9a shows the first schematic diagram of the FM transmitting device in the second embodiment of the present invention and the Samsung music mobile phone used for the vehicle;

Fig. 9b shows the schematic diagram 2 for vehicle-mounted after the FM transmitting device in the second embodiment of the utility model cooperates with the Samsung music mobile phone;

Fig. 10 shows the perspective view two of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the utility model;

Fig. 11 shows the schematic diagram of the FM transmitting device used in the second embodiment of the present invention and the Samsung music mobile phone for home use or office use;

Fig. 12 shows the three-dimensional view of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the utility model;

Fig. 13 shows the three-dimensional view four of the FM transmitting device used in conjunction with the Samsung music mobile phone in the second embodiment of the utility model;

Figure 14a shows the front view of the FM transmitting device used in conjunction with the LG music phone in Embodiment 2 of the present invention;

Figure 14b shows the rear view of the FM transmitting device used in conjunction with the LG music phone in Embodiment 2 of the present invention;

Fig. 14c is a top view of the FM transmitting device used in conjunction with the LG music mobile phone in Embodiment 2 of the present utility model;

Figure 14d shows the left view of the FM transmitting device used in conjunction with the LG music phone in Embodiment 2 of the present invention;

Figure 14e shows the right side view of the FM transmitting device used in conjunction with the LG music phone in Embodiment 2 of the present invention;

Figure 14f shows the bottom view of the FM transmitting device used in conjunction with the LG music phone in Embodiment 2 of the present invention;

Fig. 15a shows the front view of the FM transmitting device used in cooperation with the Nokia music mobile phone in the second embodiment of the utility model;

Figure 15b shows the rear view of the FM transmitting device used in conjunction with the Nokia music mobile phone in Embodiment 2 of the present invention;

Fig. 15c is a top view of the FM transmitting device used in cooperation with the Nokia music mobile phone in Embodiment 2 of the present utility model;

Figure 15d shows the left side view of the FM transmitting device used in conjunction with the Nokia music mobile phone in the second embodiment of the present invention;

Figure 15e shows the right side view of the FM transmitting device used in conjunction with the Nokia music mobile phone in Embodiment 2 of the present invention;

Figure 15f shows the bottom view of the FM transmitting device used in conjunction with the Nokia music mobile phone in the second embodiment of the present invention;

Figure 16a shows the front view of the FM transmitting device used in conjunction with the Sony Ericsson music mobile phone in Embodiment 2 of the present invention;

Figure 16b shows the rear view of the FM transmitting device used in conjunction with the Sony Ericsson music mobile phone in Embodiment 2 of the present invention;

Figure 16c shows a top view of the FM transmitting device used in conjunction with the Sony Ericsson music mobile phone in Embodiment 2 of the present invention;

Figure 16d shows the left view of the FM transmitting device used in conjunction with the Sony Ericsson music mobile phone in Embodiment 2 of the present invention;

Figure 16e shows the right side view of the FM transmitting device used in conjunction with the Sony Ericsson music mobile phone in Embodiment 2 of the present invention;

Fig. 16f is a bottom view of the FM transmitting device used in cooperation with the Sony Ericsson music mobile phone in the second embodiment of the present invention.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing.

Embodiment 1, a FM transmitting device, referring to Fig. 1, the device includes:

The receiving unit 101 is used to receive the audio signal of the mobile phone;

A frequency modulation unit 102, configured to convert the audio signal received by the receiving unit into a frequency modulation signal;

The transmitting unit 103 is configured to transmit the FM signal obtained by the FM unit to the FM radio.

The audio signal of the mobile phone can include the audio signal in the audio file or video file stored in the mobile phone; it can also include ringing music or color ring music when the mobile phone receives an incoming call; it can also include the voice of the other party when the mobile phone is in a call, etc. . Mobile phones include various models, styles and brands of mobile phones, including but not limited to various types of music phones, such as Samsung music phones, LG music phones, Nokia music phones, Sony Ericsson music phones, Motorola music phones, etc. And other types of mobile phones of various brands, such as: GPS navigation mobile phones, ultra-thin mobile phones, etc. The FM radio can be a car FM radio, an office FM radio, or a home FM radio.

Adopt the FM transmission device of this embodiment, the audio signal of mobile phone is played through FM radio, when the user is driving, the music stored in the mobile phone can be played through the car radio, and when a call comes, the voice of the other user can also be played through the car radio Realize the function of hands-free, which is convenient and safe. When the user is at home, the audio signal of the mobile phone is played through the home FM (FM) radio, so that the user can enjoy the music in the mobile phone in every corner of the home, or the hands-free calling of the mobile phone at home can be realized, thereby improving Availability of mobile phones.

Further, in order to support the hands-free function, the device may further include: a wireless receiving unit, configured to receive the user's audio signal and send it to the microphone of the mobile phone. The wireless receiving unit can be a microphone. During a mobile phone call, the user's voice is collected by the built-in microphone in the FM transmitting device, and then sent to the transmitting device of the mobile phone by the microphone of the mobile phone, and then sent to the other user. When the mobile phone user is driving, the use of the FM transmitting device of this embodiment can avoid purchasing a separate and expensive Bluetooth hands-free device and realize the hands-free function. Moreover, the music can be muted during the entire call and conversation, which is supported by the automatic answering function set by the mobile phone itself.

Further, the receiving unit may include: a first receiving subunit, configured to receive an audio signal from a charging/data interface of the mobile phone. The first receiving subunit is used to receive audio signals from charging/data interfaces of various models, styles and brands of mobile phones, including but not limited to various types of music phones, such as: Samsung music phones, LG music phones , Nokia music mobile phone, Sony Ericsson music mobile phone, Motorola music mobile phone, etc., and other types of mobile phones of various brands, such as: GPS navigation mobile phones, ultra-thin mobile phones, etc. The first receiving subunit can be the first Samsung dedicated interface, which is used to be connected with the charging/data interface of the Samsung music mobile phone, thereby being compatible with the Samsung music mobile phone; or, the first receiving subunit can also be the first LG dedicated interface, It is used to be connected with the charging/data interface of the LG music phone, so as to be compatible with the LG music phone; or, the first receiving subunit can also be a first Nokia dedicated interface, which is used to connect with the charging/data interface of the Nokia music phone, Thereby being compatible with the Nokia music mobile phone; perhaps, the first receiving subunit can also be the first Sony Ericsson dedicated interface, be used for being connected with the charge/data interface of the Sony Ericsson music mobile phone, thereby being compatible with the Sony Ericsson music mobile phone; or, the first receiving subunit can also be It can be the first Motorola-specific interface, which is used to connect with the charging/data interface of the Motorola music phone, so as to be compatible with the Motorola music phone and the like. After the first receiving subunit is compatible with various models, styles and brands of mobile phones, the function remains unchanged. They are all used to receive audio signals from the charging/data interface of the mobile phone. The only difference is that the first receiving subunit and The connector of the charging/data interface of each mobile phone is changed accordingly according to the mobile phone model, style, etc., to realize the fitting of the FM transmitting device of the present invention with each mobile phone.

Further, the receiving unit may also include: a second receiving subunit, configured to receive an audio signal from an earpiece of the mobile phone; a third receiving subunit, configured to receive an audio signal from an earphone of the mobile phone.

The frequency modulation unit converts the audio signal into a frequency modulation signal within a frequency range, and the frequency of frequency modulation can be determined according to the frequency of the corresponding frequency modulation radio. Further, in order to improve the practicability of the frequency modulation transmitting device, the device can also include: a display unit , used to connect with the transmitter unit, and display the frequency of the transmitter unit.

Further, the device may further include: a control unit, configured to be connected with the transmitting unit, and control the frequency corresponding to the transmitting unit. Corresponding to different FM radios, the control unit needs to adjust the frequency corresponding to the transmitting unit to be the same as that of the FM radio. The control unit can receive the input of the increase (+) or decrease (-) key on the housing of the FM transmitting device, so as to adjust the frequency corresponding to the transmitting unit up or down within the selectable FM range.

Further, the device may further include: a storage unit, configured to be connected with the transmitting unit, and store the frequency transmitted by the transmitting unit. The storage unit can store all the frequencies within the FM range, or only the last used frequency. On the one hand, it can save storage space. On the other hand, the last used frequency can be directly called from the storage unit when it is used next time. There is no need to use the control unit to adjust again, and the efficiency of using the FM transmitter is improved.

Further, the device may further include: a power supply unit, configured to supply power to the FM transmitting device. Further, the power supply unit may include: a first power supply subunit, configured to obtain electric energy from the charging/data interface of the mobile phone. Through the first power supply sub-unit, the mobile phone directly supplies power to the FM transmitting device without using a battery, thereby avoiding the situation that the battery runs out of power in the field or when traveling, and is more practical and environmentally friendly.

Further, the first power supply sub-unit can be a second Samsung-specific interface for connecting with the charging/data interface of the Samsung music phone. In order to facilitate the production of the FM transmitting device, the first Samsung-specific interface and the second Samsung-specific interface can be integrally formed, that is, a dedicated interface matching the charging/data interface of the Samsung music phone is arranged on the shell of the FM transmitting device. Part of the dedicated interface is used as the first power supply subunit, and the other part is used as the first receiving subunit to realize the exchange of data and electric energy between the FM transmitting device and the Samsung music mobile phone.

Further, in order to increase the source of electric energy of the FM transmitting device, and further, in order to provide an auxiliary means for charging mobile phones (especially music mobile phones) when users need to drive long distances, travel by car or go out on business, the power supply unit can also be It includes: a second power supply subunit, used for connecting with a DC power supply or a cigarette lighter. The FM transmitting device can be connected to a DC power supply or a cigarette lighter through a power cord or an optical cable to realize power supply to the FM transmitting device and to charge a mobile phone (especially a music mobile phone); when the first power supply subunit includes the first When connecting the power supply subunit and the second power supply subunit, the second power supply subunit can be connected to a DC power supply or a cigarette lighter. On the one hand, it can supply power to the FM transmitting device. Charge mobile phones such as Nokia, Sony Ericsson, and Motorola.

Further, the device may further include: a portable unit, one end of which is used to be fixed on the casing of the FM transmitter, and the other end is used to be fixed on the casing of the mobile phone. The portable unit can be a lanyard or a lanyard, and the FM transmitting device is attached to the mobile phone, so that it is convenient to carry the FM transmitting device when going out or traveling.

Further, the device may further include: a switch unit, used for connecting between the power supply unit and the receiving unit, and disconnecting the connection between the power supply unit and the receiving unit when the input of the power supply unit is lower than the rated voltage, that is, when the power supply unit When the input voltage is lower than the rated voltage, the whole FM transmitting device will not work through the switch unit. For the implementation of power supply to the FM transmitting device through the mobile phone, when the input of the power supply unit is lower than the rated voltage, it means that the mobile phone needs to be charged. At this time, the FM transmitting device will work again, which will accelerate the consumption of the battery of the mobile phone and may affect the user's use. Mobile phone calls, etc., causing inconvenience to work or life.

Embodiment 2. This embodiment is a specific application of the device, functional units and subunits in Embodiment 1.

Referring to Fig. 2, FM transmitting and receiving 201 is equivalent to the sum of the functions of the receiving unit, the frequency modulation unit and the transmitting unit in the first embodiment, the microphone 202 is equivalent to the wireless receiving unit in the first embodiment, and the power supply 203 and the power supply 204 are equivalent to the embodiment The power supply unit in the first embodiment, the CPU 205 is equivalent to the control unit in the first embodiment, and the mobile phone 206 is equivalent to the mobile phone in the first embodiment.

The circuit of each functional unit and subunit in the second embodiment will be described below.

See Figure 3, the 20PIN module and its peripheral circuit are used as the first receiving subunit to connect with the charging/data interface of the mobile phone. The 20PIN module and its peripheral circuit can be connected to the charging/data interface of various models, styles and brands of mobile phones Interface connection, such as Samsung music phone, LG music phone, Nokia music phone, Sony Ericsson music phone, Motorola music phone, etc., in order to better connect with the charging/data interface of the mobile phone, connect with the charging/data interface of different mobile phones , the connectors of the first receiving subunit are different; the J2 module and its peripheral circuit are used as the second receiving subunit to receive audio signals from the earpiece of the mobile phone, or as the third receiving subunit to receive audio from the earphone of the mobile phone Signal. The Rmic (microphone) module and its peripheral circuits are used as a wireless receiving unit to receive the user's audio signal and send it to the microphone of the mobile phone. The J7 module and its peripheral circuits are used as a switch unit to detect the power supply voltage. When the voltage is higher than the rated voltage, the FM transmitter works, and when the voltage is lower than the rated voltage, the FM transmitter does not work. OUTL is sent to the FM unit as the left channel signal of the received audio signal of the mobile phone, and OUTR is sent to the FM unit as the right channel signal of the received audio signal of the mobile phone.

Referring to Figure 4, the Q5 module and its peripheral circuits are used as a frequency modulation unit to convert the audio signal received by the receiving unit into a frequency modulation signal. The antenna ANT and its peripheral circuits are used as a transmitting unit for sending the FM signal obtained by the FM unit to the FM radio.

Referring to Figure 5, the Q4 module and its peripheral circuits are used as a storage unit for storing the frequency emitted by the transmitting unit. The storage unit can store all the frequencies within the FM range; it can also cooperate with the U1 module as a function module for storing frequencies, and only store the last used frequency. On the one hand, it can save storage space; on the other hand, it can be used directly from The last used frequency can be recalled from the storage unit. The UP module and the DOWN module work together as the control unit to adjust the frequency corresponding to the transmitting unit to be the same as that of the FM radio. The control unit can receive the input of the increase (+) or decrease (-) key on the housing of the FM transmitting device, so as to adjust the frequency corresponding to the transmitting unit up or down within the selectable FM range.

Referring to Fig. 6, the display unit is used to connect with the transmitting unit and display the frequency of the transmitting unit. Among them, the JI module is used to insert the LCD screen, and the Q1 module is used as the driver chip of the LCD screen.

Fig. 3 to Fig. 6 are only an example of the circuit diagram cited in order to illustrate the specific realization of each functional unit in this embodiment, for those skilled in the art, without departing from the basis of each functional unit and subunit principle of the present utility model In addition, there can be many other circuit modes for realizing the above functional units and subunits, as an alternative to Fig. 3 to Fig. 6; further, some improvements and modifications can also be made on the basis of Fig. 3 to Fig. 6, These alternatives, improvements and modifications should also be considered as the scope of protection of the present utility model,

The structure and application of the FM transmitting device in this embodiment will be described below.

Referring to FIGS. 7a to 7f and FIGS. 8a to 8c, the FM transmitting device 801 in this embodiment is an FM transmitter designed for a Samsung music mobile phone 802 . Wherein, the liquid crystal display screen 803 on the FM transmitting device is used to display the frequency of FM; the button 804 is used to provide the user with an adjustment to increase or decrease the frequency of FM; the interface 805 is used for charging/ The data interface matches.

Referring to Figures 9a and 9b, the FM transmitting device in this embodiment can directly play the music in the mobile phone through the car FM stereo (radio). In Fig. 9a, the FM transmitting device is placed above the vehicle-mounted FM (FM) stereo (radio), and in Fig. 9b, the FM transmitting device is placed below the vehicle-mounted FM (FM) stereo (radio), on the gear side.

Referring to FIG. 10 , when the FM transmitting device is built in the vehicle, the hands-free use of the mobile phone can be realized through the microphone 1001 on the FM transmitting device, without the need to purchase a separate vehicle-mounted Bluetooth speaker.

Referring to FIG. 11 , in this embodiment, the FM transmitting device can also play the music in the mobile phone through the FM stereo 1101 for home use or office use. Users can hear the caller's voice with good sound quality.

Referring to FIG. 12 , in this embodiment, the FM transmitting device can also be attached to a mobile phone during travel through a telephone cord 1201 .

Referring to Fig. 13, in this embodiment, a DC power jack 1301 is set on the FM transmitting device, which can be connected to a DC power supply through a power cord, an optical charging cable, or connected to a cigarette lighter on a car through a cigarette charger, and Charge your phone.

The FM transmitter designed for other music phones (such as LG music phones, Nokia music phones, Sony Ericsson music phones, Motorola music phones, etc.) has the same function and principle as the FM transmitter designed for Samsung music phones. The FM transmitter designed for the music mobile phone is different from the connector of the corresponding mobile phone, so as to better realize the fit between the FM transmitter and each music mobile phone.

Referring to Figures 14a to 14f, the FM transmitting device in this embodiment is an FM transmitter designed for LG music phones, which is different from the connector of the FM transmitter designed for Samsung music phones.

Referring to Figures 15a to 15f, the FM transmitting device in this embodiment is an FM transmitter designed for a Nokia music phone, which is different from the connector of the FM transmitter designed for a Samsung music phone.

Referring to Figures 16a to 16f, the FM transmitting device in this embodiment is an FM transmitter designed for a Sony Ericsson music mobile phone, which is different from the connector of the FM transmitter designed for a Samsung music mobile phone.

The above is only the specific implementation of the utility model FM transmitting device applied to Samsung music mobile phone, LG music mobile phone, Nokia music mobile phone and Sony Ericsson music mobile phone. Under the premise of the principle of the utility model, some improvements and modifications can also be made to the above specific applications, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Through the FM transmitting device of this embodiment (that is, the two-in-one device mentioned below, which combines sound playback and hands-free) you can wirelessly play the audio stored in your mobile phone through your car speaker or home FM stereo. Music on the phone. A built-in microphone makes it possible for the speakerphone to work while driving—listen to music when the phone is not in use, then the music is muted and other people's voices are sent through the radio's speakers. The following are instructions for use of the FM transmitting device in this embodiment:

Model: LT-088/LT-089/LT-090/LT-091, etc. (depending on the matching mobile phone model, style, and brand)

characteristic:

-Wireless playback of stereo music from your mobile phone on car radio or office/home FM radio

- Hands-free use of mobile phones while driving

-Built-in fully transparent microphone

-Music muted during calls

- Other people's voices through the speakers of the FM radio

- Avoid buying a separate and expensive Bluetooth hands-free device

-Blue background light display

-Digital PLL for better transmission performance

-Typically, a distance of ten meters

- Powered by music phones or mobile phones such as Samsung, Sony Ericsson, Nokia, LG, Motorola - no batteries required

- Selectable FM frequency between 87.6MHz and 107.9MHz, store last used frequency

Use the steps of using the FM transmitting device of this embodiment (i.e. music phone FM transmitter):

1. Select any free FM frequency on your stereo between 87.6MHz and 107.9MHz. Go to http://www.radio-now.co.uk/mail.htm for free frequencies in your particular region

2. Insert the small connector of the 2-in-1 device into the charging & data port of your Samsung, Sony Ericsson, Nokia, LG, Motorola and other music phones or mobile phones. The blue display will illuminate and display the frequency (eg 89.1MHz).

3. Press the channel up (+) or channel down (-) button on the 2-in-1 device and select the same FM frequency as your stereo - see the first item above.

4. Start to play the music in your Samsung, Sony Ericsson, Nokia, LG, Motorola and other music phones or mobile phones. If you want to use it in hands-free mode, then you need to activate the automatic call answering function (refer to your mobile phone user manual to activate the function).

5. Now you can use the 2-in-1 device.

Now you can enjoy your favorite music stored in your Samsung, Sony Ericsson, Nokia, LG, Motorola, etc. music phone or mobile phone while driving. When there is an incoming call, the music will pause and the device will automatically switch to hands-free mode. Users can answer incoming calls through the stereo speakers and talk to callers through the built-in microphone.

adjust the volume

The volume can be adjusted in one of two ways:

1. Control the volume of the mobile phone (please refer to the user manual of the mobile phone)

2. High-fidelity stereo volume control

Please set the volume to at least 75% of maximum volume for optimal performance.

To charge the mobile phone:

The 2-in-1 device occupies the charging port of the mobile phone when in use.

The 2-in-1 device draws its power from the mobile phone.

Parameters: (only take the parameter of a specific product as an example, and this parameter does not limit the FM transmitting device of the present utility model)

- Dimensions: 43mm (length) × 11.5mm (width) × 20mm (height), or 35mm (length) × 13mm (width) × 16mm (height)

- Weight: can be 11g, or other values less than 11g

-Keys: can be the up (+) and minus (-) keys for selecting the FM frequency, or the up and down keys for selecting the FM frequency

- Working voltage: can be DC 3.7 volts

- Current consumption: can be 30mA+/-3mA, or other current consumption values between 27-33mA (other values are also possible)

-Frequency band: can be between 87.6MHz～107.9Hz

- Compatibility: Compatible with Samsung, Sony Ericsson, Nokia, LG, Motorola and other new music phones or mobile phones

-Color: can be silver/black (other colors are also available, the color is not limited, it can be determined according to the user's preference)

- Power supply: can be powered by mobile phone

The above are only specific implementations of the utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the utility model. It should also be regarded as the protection scope of the present utility model.

Claims (16)

1. A frequency modulation transmitter, characterized in that the device comprises: The receiving unit is used to receive the audio signal of the mobile phone; a frequency modulation unit, configured to convert the audio signal received by the receiving unit into a frequency modulation signal; The transmitting unit is used to send the FM signal obtained by the FM unit to the FM radio. 2. The device according to claim 1, further comprising: The wireless receiving unit is used to receive the user's audio signal and send it to the microphone of the mobile phone. 3. The device according to claim 2, wherein the wireless receiving unit is a microphone. 4. The device according to claim 1, wherein the receiving unit comprises: The first receiving subunit is used for receiving audio signals from the charging/data interface of the mobile phone. 5. The device according to claim 4, characterized in that, the first receiving subunit is a first Samsung dedicated interface for connecting with the charging/data interface of a Samsung music phone; Or, the first receiving subunit is a first LG dedicated interface, which is used to connect with the charging/data interface of the LG music phone; Or, the first receiving subunit is a first Nokia dedicated interface, which is used to connect with the charging/data interface of the Nokia music phone; Or, the first receiving subunit is a first Sony Ericsson dedicated interface, which is used to connect with the charging/data interface of the Sony Ericsson music phone; Alternatively, the first receiving subunit is a first Motorola-specific interface for connecting with the charging/data interface of the Motorola music phone. 6. The device according to claim 1, wherein the receiving unit comprises: The second receiving subunit is used to receive audio signals from the handset of the mobile phone; The third receiving subunit is used for receiving audio signals from the earphone of the mobile phone. 7. The device according to claim 1, further comprising: The display unit is used to connect with the frequency modulation unit and display the frequency modulated by the frequency modulation unit. 8. The device of claim 1, further comprising The control unit is used to connect with the sending unit and control the frequency corresponding to the sending unit. 9. The device according to any one of claims 1 to 8, characterized in that the device further comprises: The power supply unit is used to supply power to the FM transmitting device. 10. The device according to claim 9, wherein the power supply unit comprises: The first power supply subunit is used to obtain electric energy from the charging/data interface of the mobile phone. 11. The device according to claim 10, characterized in that, the first power supply subunit is a second Samsung dedicated interface, which is used to connect with the charging/data interface of the Samsung music phone; Or, the first power supply subunit is a second LG dedicated interface, which is used to connect with the charging/data interface of the LG music phone; Or, the first power supply subunit is a second Nokia dedicated interface, which is used to connect with the charging/data interface of the Nokia music phone; Or, the first power supply subunit is a second Sony Ericsson dedicated interface, which is used to connect with the charging/data interface of the Sony Ericsson music phone; Alternatively, the first power supply subunit is a second Motorola-specific interface, which is used to connect with the charging/data interface of the Motorola music phone. 12. The device according to claim 11, wherein the first Samsung-specific interface and the second Samsung-specific interface are integrally formed. 13. The device according to claim 11, wherein the power supply unit further comprises: The second power supply subunit is used for connecting with a DC power supply or a cigarette lighter. 14. The device according to claim 1, further comprising: The storage unit is configured to be connected with the frequency modulation unit, and store the frequency modulated by the frequency modulation unit. 15. The device according to claim 1, further comprising: One end of the portable unit is used to be fixed on the shell of the FM transmitting device, and the other end is used to be fixed on the shell of the mobile phone. 16. The device according to claim 9, further comprising: A switch unit is used to connect between the power supply unit and the receiving unit, and disconnect the power supply unit from the receiving unit when the input of the power supply unit is lower than the rated voltage.

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