CN102055490B - FM playback method, device and terminal - Google Patents

Abstract

The invention discloses a frequency modulation (FM) broadcasting method which comprises the steps of: detecting whether an external earphone antenna is accessed or not by a switching control module; if yes, receiving and modulating an FM broadcasting signal by an FM receiving chip through the external earphone antenna, generating a first signal and transmitting the first signal to a baseband chip, generating a second signal after modulation, outputting the second signal to the external earphone antenna, demodulating and broadcasting by an external earphone; if not, receiving and modulating the FM broadcasting signal by the FM receiving chip through an internal antenna, generating a third signal and transmitting the third signal to the baseband chip, generating a fourth signal after modulation, judging whether an FM Bluetooth broadcasting signal is detected or not, if yes, outputting the fourth signal to a Bluetooth module by the baseband chip, carrying out Bluetooth modulation by the Bluetooth module, outputting a generated fifth signal to a Bluetooth earphone through the Bluetooth module for demodulating and broadcasting; and if not, directly broadcasting through the earphone. The invention also discloses an FM broadcasting method, two FM broadcasting devices and two terminals. By adopting the invention, the switching among a plurality of receiving modes can be realized.

Description

FM playback method, device and terminal

technical field

The invention relates to the communication field, in particular to two FM playing methods, two FM playing devices and two terminals.

Background technique

The rapid development of mobile communication has effectively promoted the development of mobile terminals in the direction of intelligence, miniaturization and diversified functions. In recent years, mobile terminals with FM (Frequency Modulation, FM) function are more and more popular among users because they can listen to the latest news and information anytime and anywhere.

The working principle of the existing mobile terminal with FM function is as follows: the FM antenna receives the FM broadcast signal, and the FM broadcast signal enters the quadrature mirror to resist the mixer for mixing after low-noise filtering, and then amplifies it through the variable gain amplifier. High-precision analog-to-digital conversion, the converted digital signal is decoded and processed by audio DSP (Digital Signal Processing, digital signal processing), and the processed signal is converted by digital-to-analog converter DAC (Digital-to-analog Converter, digital-to-analog conversion ) is output through the left and right channels after conversion.

At present, there are several forms of mobile terminal FM modules, such as rods, earphone antennas, and patches. The antenna is compact and easy to assemble, but due to the small clearance area in the mobile terminal, the performance is relatively poor. At the present stage, the external headphone antenna is more widely used, and the external headphone antenna is used to support FM playback. In addition, the built-in antenna can also support FM playback. The principle is as follows: through the integration of the radiation device and the joint design The performance of the antenna supports FM loudspeaker.

However, existing mobile terminals with FM functions still have certain defects, specifically as follows:

1. Most mobile terminals with FM function need an external earphone antenna as the FM antenna;

2. Mobile terminals that support FM broadcasting have poor channel search effect and limited directionality;

3. For a mobile terminal, the FM playback mode is single, and cannot support wireless network playback, nor can it support multiple users at the same time;

4. The power consumption of FM external or internal discharge is relatively large, and the standby time for listening is short.

Contents of the invention

An embodiment of the present invention provides a FM broadcasting method, which is used to realize the switching between multiple listening modes and the purpose of wirelessly listening to FM signals. The method includes:

The switching control module detects whether there is currently an external earphone antenna connected;

If so, the FM receiving chip receives and modulates the FM broadcast signal through the external earphone antenna, generates a first signal and transmits it to the baseband chip, generates a second signal after being modulated by the baseband chip, and outputs it to the external earphone, and the external earphone demodulating and playing the second signal;

If not, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna, generates the third signal and transmits it to the baseband chip, generates the fourth signal after being modulated by the baseband chip, and judges whether the FM bluetooth broadcast signal is currently detected , if yes, the baseband chip outputs the fourth signal to the Bluetooth module, the Bluetooth module performs Bluetooth modulation on the fourth signal, and outputs the generated fifth signal to the Bluetooth headset through the Bluetooth antenna, and the Bluetooth module The Bluetooth headset demodulates and plays the fifth signal; if not, directly plays the fourth signal through a microphone:

Wherein, when the switching control module detects that the inoperative state of any one or more components in the terminal is maintained for more than a set time, the baseband chip notifies the Bluetooth module to stop running, and notifies other components to enter a low-current sleep mode , to maintain the lowest current consumption.

The embodiment of the present invention also provides a method for FM broadcasting, which is used to achieve the purpose of wirelessly receiving FM signals, and the method includes:

The baseband chip modulates the first signal output by the FM receiving chip, and outputs the generated second signal to the Bluetooth module;

The Bluetooth module performs Bluetooth modulation on the second signal, and outputs the generated third signal to the Bluetooth headset through the Bluetooth antenna;

The Bluetooth headset demodulates and plays the third signal;

When the switching control module detects that any one or more components in the terminal are not in operation for more than a set time, the baseband chip notifies the Bluetooth module to stop running, and notifies other components to enter a low-current sleep mode to maintain the lowest current consumption .

The embodiment of the present invention also provides a FM playback device, which is used to achieve the purpose of switching between multiple listening modes, including:

The switch control module is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM Bluetooth playback signal is currently detected;

The FM receiving chip is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, when the switching control module When it is not detected that there is currently an external headphone antenna connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip is used to modulate the received first signal to generate a second signal and output it to an external earphone; and modulate the received third signal to generate a fourth signal; when the switching control module detects When the FM bluetooth broadcasts the signal, the fourth signal is output to the bluetooth module, and when the switching control module detects that the inoperative state of any one or more components in the terminal remains beyond the set time, the baseband chip notifies the bluetooth module Stop running and notify other components to enter low-current sleep mode to maintain the lowest current consumption.

The embodiment of the present invention also provides a terminal, which is used to achieve the purpose of switching between multiple listening modes, including an FM playback device, and the FM playback device includes:

The switch control module is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM Bluetooth playback signal is currently detected;

The FM receiving chip is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, when the switching control module When it is not detected that there is currently an external headphone antenna connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip is used to modulate the received first signal to generate a second signal and output it to an external earphone; and modulate the received third signal to generate a fourth signal; when the switching control module detects When the FM bluetooth broadcasts the signal, the fourth signal is output to the bluetooth module, and when the switching control module detects that the inoperative state of any one or more components in the terminal remains beyond the set time, the baseband chip notifies the bluetooth module Stop operation and notify other components to enter a low-current sleep mode to maintain minimum current consumption; or

The FM player includes:

The switch control module is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM Bluetooth playback signal is currently detected;

The FM receiving chip is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, when the switching control module When it is not detected that there is currently an external headphone antenna connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip is used to modulate the received first signal to generate a second signal and output it to an external earphone; and modulate the received third signal to generate a fourth signal; when the switching control module detects When the FM bluetooth broadcasts the signal, the fourth signal is output to the bluetooth module, and when the switching control module detects that the inoperative state of any one or more components in the terminal remains beyond the set time, the baseband chip notifies the bluetooth module Stop running and notify other components to enter low-current sleep mode to maintain the lowest current consumption;

An external earphone is further used to demodulate and play the received second signal;

The Bluetooth module is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

A bluetooth antenna, configured to receive the fifth signal and output it;

Bluetooth earphones, used to demodulate and play the received fifth signal;

Mike, for when the switching control module does not detect the FM bluetooth play signal, directly play the fourth signal; or

The FM player includes:

The switch control module is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM Bluetooth playback signal is currently detected;

The FM receiving chip is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, when the switching control module When it is not detected that there is currently an external headphone antenna connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip is used to modulate the received first signal to generate a second signal and output it to an external earphone; and modulate the received third signal to generate a fourth signal; when the switching control module detects When the FM bluetooth broadcasts the signal, the fourth signal is output to the bluetooth module, and when the switching control module detects that the inoperative state of any one or more components in the terminal remains beyond the set time, the baseband chip notifies the bluetooth module Stop running and notify other components to enter low-current sleep mode to maintain the lowest current consumption;

An external earphone is further used to demodulate and play the received second signal;

The Bluetooth module is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

A bluetooth antenna, configured to receive the fifth signal and output it;

Bluetooth earphones, used to demodulate and play the received fifth signal;

Mike, used for directly playing the fourth signal when the switching control module does not detect the FM bluetooth playback signal;

The FM player includes:

The switch control module is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM Bluetooth playback signal is currently detected;

The FM receiving chip is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, when the switching control module When it is not detected that there is currently an external headphone antenna connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip is used to modulate the received first signal to generate a second signal and output it to an external earphone; and modulate the received third signal to generate a fourth signal; when the switching control module detects When the FM bluetooth broadcasts the signal, the fourth signal is output to the bluetooth module, and when the switching control module detects that the inoperative state of any one or more components in the terminal remains beyond the set time, the baseband chip notifies the bluetooth module Stop running and notify other components to enter low-current sleep mode to maintain the lowest current consumption;

An external earphone is further used to demodulate and play the received second signal;

The Bluetooth module is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

A bluetooth antenna, configured to receive the fifth signal and output it;

Bluetooth earphones, used to demodulate and play the received fifth signal;

Mike, used for directly playing the fourth signal when the switching control module does not detect the FM bluetooth playback signal;

The switching control module is further configured to: when there is at least one Bluetooth headset, control the Bluetooth module to split the audio of the fifth signal according to the number of the Bluetooth headset.

The embodiment of the present invention also provides a FM playback device for wirelessly listening to FM signals, including:

FM receiving chip, used to output the first signal;

The baseband chip is used to modulate the first signal and output the generated second signal. When the switching control module detects that any one or more components in the terminal are not in operation for more than a set time, the baseband chip Notifying the Bluetooth module to stop running, and notifying other components to enter a low-current sleep mode to maintain the lowest current consumption;

A bluetooth module, configured to perform bluetooth modulation on the second signal, and output the generated third signal;

A bluetooth antenna, for outputting the third signal to a bluetooth headset;

The bluetooth earphone is used to demodulate and play the received third signal.

The embodiment of the present invention also provides a terminal, which is used to achieve the purpose of wirelessly receiving FM signals, including an FM playback device, and the FM playback device includes:

FM receiving chip, used to output the first signal;

The baseband chip is used to modulate the first signal and output the generated second signal. When the switching control module detects that any one or more components in the terminal are not in operation for more than a set time, the baseband chip Notifying the Bluetooth module to stop running, and notifying other components to enter a low-current sleep mode to maintain the lowest current consumption;

A bluetooth module, configured to perform bluetooth modulation on the second signal, and output the generated third signal;

A bluetooth antenna, for outputting the third signal to a bluetooth headset;

A bluetooth earphone, used to demodulate and play the received third signal; or

The FM player includes:

FM receiving chip, used to output the first signal;

The baseband chip is used to modulate the first signal and output the generated second signal. When the switching control module detects that any one or more components in the terminal are not in operation for more than a set time, the baseband chip Notifying the Bluetooth module to stop running, and notifying other components to enter a low-current sleep mode to maintain the lowest current consumption;

A bluetooth module, configured to perform bluetooth modulation on the second signal, and output the generated third signal;

A bluetooth antenna, for outputting the third signal to a bluetooth headset;

A bluetooth earphone, used to demodulate and play the received third signal;

The FM receiving chip is further configured to: receive and modulate an FM broadcast signal via a built-in antenna to generate the first signal.

In the embodiment of the present invention, the switching control module detects whether there is currently an external earphone antenna connected, and if so, the FM receiving chip receives and modulates the FM broadcast signal through the external earphone antenna, generates a first signal and transmits it to the baseband chip, and then transmits the first signal to the baseband chip through the baseband chip. After modulation, the second signal is generated and output to the external earphone, and the external earphone demodulates and plays the second signal; if not, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna, generates the third signal and transmits it to The baseband chip generates the fourth signal after being modulated by the baseband chip, and judges whether an FM Bluetooth playback signal is currently detected. The fifth signal is output to the Bluetooth headset through the Bluetooth antenna, and the Bluetooth headset demodulates and plays the fifth signal; if not, directly plays the fourth signal through the microphone. That is to say, in the embodiment of the present invention, it is possible to switch between multiple answering modes according to the actual situation or the user's choice, and is not limited to one answering mode, which can improve the user's feeling and experience.

Further, the purpose of receiving FM broadcasts by using the Bluetooth headset can be achieved, avoiding that most mobile terminals with FM functions need to connect an external headset antenna as an FM antenna as mentioned in the prior art. At the same time, the use of Bluetooth headsets to receive FM broadcasts can support wireless networks.

Further, when multiple Bluetooth headsets are configured, the FM signal can be distributed to multiple Bluetooth headsets, thereby creating a wireless network audio environment and realizing the purpose of sharing among multiple people.

Further, the embodiment of the present invention also proposes to set a time threshold according to the needs of the user. When the non-operating state of each component is maintained for more than the set time, the baseband chip notifies the Bluetooth module to stop running, and notifies each component to enter a low-current sleep mode. Current consumption, using this measure can effectively reduce the power consumption of answering calls and prolong the standby time.

Description of drawings

Fig. 1 is the concrete flowchart of the first kind of FM playing method that the embodiment of the present invention provides;

Fig. 2 is the concrete flowchart of the second kind of FM playing method that the embodiment of the present invention provides;

Fig. 3 is a kind of structural schematic diagram of the first kind of FM playback device provided by the embodiment of the present invention;

Fig. 4 is another schematic structural diagram of the first FM playback device provided by the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first type of terminal provided by an embodiment of the present invention;

FIG. 6 is another schematic structural diagram of the first type of terminal provided by the embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a second FM playback device provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a second type of terminal provided by an embodiment of the present invention.

Detailed ways

In order to solve the problems mentioned in the prior art that the FM function needs to be connected with an external earphone as an FM antenna, and the FM playback mode is single, unable to support wireless network playback, and cannot support multiple users at the same time, the embodiment of the present invention provides a The FM playback method, the specific processing flow is as shown in Figure 1:

Step 101, the switching control module detects whether there is currently an external earphone antenna connected, if so, execute steps 102 and 103, if not, execute steps 104 to 109;

Step 102, the FM receiving chip receives and modulates the FM broadcast signal via an external earphone antenna, generates a first signal and transmits it to the baseband chip;

Step 103, the baseband chip modulates the first signal to generate a second signal, and outputs it to an external earphone, and the external earphone demodulates and plays the second signal, and the process ends;

Step 104, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna, generates a third signal and transmits it to the baseband chip;

Step 105, generating a fourth signal after the baseband chip modulates the third signal;

Step 106, judging whether the FM bluetooth broadcast signal is currently detected, if so, execute steps 107 and 108, if not, execute step 109;

Step 107, the baseband chip outputs the fourth signal to the Bluetooth module, and the Bluetooth module performs Bluetooth modulation on the fourth signal, and outputs the generated fifth signal to the Bluetooth headset through the Bluetooth antenna;

Step 108, the Bluetooth headset demodulates and plays the fifth signal, and the process ends;

Step 109: Play the fourth signal directly through the microphone, and the process ends.

In specific implementation, the FM playback method provided by the embodiment of the present invention can be applied to any device that can provide FM functions, for example, it can be applied to mobile phones, computers, radios and other similar devices. Of course, in order to ensure that users can receive For new news and consultation, the FM playing method can also be applied to any mobile terminal, as long as the mobile terminal can provide FM function.

When the FM broadcasting method is applied to the mobile terminal, the baseband chip, the FM receiving chip, the bluetooth module and the bluetooth antenna are all integrated inside the mobile terminal.

Process as shown in Figure 1, when step 102 is implemented, the FM receiving chip receives the FM broadcast signal through the external earphone antenna and modulates to generate the first signal. The specific modulation method is as follows: the FM receiving chip receives the FM broadcast signal through the external earphone antenna , after demodulation, filtering, amplification, frequency mixing, ADC (Analog-to-Digital Converter, analog-to-digital conversion) conversion and DSP audio processing, and output to the baseband chip by DAC. When step 104 is implemented, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna to generate a third signal. The specific modulation method is similar to that in step 102 .

The process shown in Figure 1 shows that in addition to receiving FM broadcast signals through the built-in antenna, FM broadcast signals can also be received through an external earphone antenna. In actual implementation, if there is an external earphone antenna, use the peripheral earphone antenna to receive FM broadcast signals , if no external headphone antenna is currently present, the built-in antenna can be used to receive FM radio signals.

From the process shown in Figure 1, it can be known that the device applying the FM FM playing method provided by the embodiment of the present invention has at least three implementation modes: bluetooth mode, external speaker mode and external earphone mode. Of course, there may also be other modes. Broadcasting FM radio is sufficient, for example, in infrared mode. In the specific implementation, different modes can be selected according to the actual situation. For example, the Bluetooth mode can be selected when exercising or driving, which avoids the entanglement of the earphone antenna, and at the same time can stay away from radiation and reduce the impact of electromagnetic waves on people. According to the above content, it can be seen that the method provided by the embodiment of the present invention ensures the diversification of FM broadcast listening modes. When the configuration or user selection changes, a switching control module is integrated inside the terminal during implementation, and the selection is realized by hardware. Optionally connect an external headphone antenna or internal antenna. The switching control module can be used to quickly switch to a suitable mode, making the control between modes more convenient and quick.

A specific embodiment is now used for illustration. In this example, there are three implementation modes: bluetooth mode, external speaker mode and external earphone mode. The specific implementation methods of the three modes are as follows:

Through the high-speed analog switch, the output response to the input of the three mode signals is generated, so that the output flow direction of the audio analog signal output by the baseband chip, when the external earphone antenna is connected, the baseband chip conducts the audio earphone loop through the control switch, and the terminal Use the external headphone antenna as the FM antenna to receive the broadcast signal, and output it from the left and right channel linear analog output ports LOUT and ROUT after filtering, amplification, mixing, DSP audio processing and digital-to-analog conversion, and the output audio signal is converted by the baseband chip and then transmitted to the headset;

When the Bluetooth headset is connected, after matching and authentication, the baseband chip conducts the audio Bluetooth circuit through the control switch, and at the same time, the terminal uses the built-in antenna as an FM antenna to receive the broadcast signal, through filtering, amplification, mixing, and DSP audio processing After digital-to-analog conversion, it is output from the digital audio output port DOUT, and the output audio signal is converted by the baseband chip and transmitted to the Bluetooth module, then transmitted through the Bluetooth antenna, and received by the Bluetooth headset;

When the FM is directly released, the baseband chip conducts the audio player speaker loop through the control switch. At the same time, the terminal uses the built-in antenna as the FM antenna to receive the broadcast signal. After audio processing and digital-to-analog conversion, it is linearly simulated from the left and right channels. The output ports LOUT and ROUT are output, the output audio signal is output after being converted by the baseband chip, and the broadcast signal is output after electro-acoustic conversion.

Since the FM broadcast in the prior art will continue to play, it may consume a lot of power in a short period of time, the cost is high, and it can affect the user's experience. To solve this problem, the embodiment of the present invention also proposes that according to the user's A time threshold needs to be set. During implementation, when the switching control module detects that any one or more components in the terminal are not in operation for longer than the set time, the baseband chip notifies the Bluetooth module to stop running, and notifies each component to enter low-current sleep Mode to maintain the lowest current consumption, this measure can effectively reduce the power consumption of answering calls and prolong the standby time.

When implementing, the bluetooth earphone of disposing can be one, also can be multiple, depending on specific circumstances, when the bluetooth earphone of disposing is a plurality of, switching control module can control the bluetooth module to the fifth according to the number of bluetooth earphones The signal is divided into audio, and the divided signal is output to multiple Bluetooth headsets, and then a wireless network audio environment can be created to achieve the purpose of sharing by multiple people.

Based on the same inventive concept, the embodiment of the present invention also provides an FM playback method, the specific processing flow is shown in Figure 2, including:

Step 201, the baseband chip modulates the sixth signal output by the FM receiving chip, and outputs the generated seventh signal to the Bluetooth module;

Step 202, the Bluetooth module performs Bluetooth modulation on the seventh signal, and outputs the generated eighth signal to the Bluetooth headset through the Bluetooth antenna;

Step 203, the Bluetooth headset demodulates and plays the eighth signal.

As shown in the flow chart in FIG. 2 , when step 201 is implemented, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna to generate a sixth signal.

Based on the same inventive concept, the embodiment of the present invention also provides an FM playback device, the specific structure of which is shown in Figure 3:

The switching control module 301 is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM bluetooth playback signal is currently detected;

The FM receiving chip 302 is used for receiving and modulating the FM broadcast signal through the external earphone antenna when the switching control module 301 detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, the switching control module 301 does not detect When an external earphone antenna is connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip 303 is used to modulate the received first signal to generate a second signal and output it to the external earphone 304; and modulate the received third signal to generate a fourth signal; when the switch control module 301 detects FM Output the fourth signal to the bluetooth module 305 when playing the signal by bluetooth.

In one embodiment, as shown in Figure 4, the FM playback device can also include:

An external earphone 304 is further used to demodulate and play the received second signal;

The Bluetooth module 305 is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

Bluetooth antenna 401, used to receive the fifth signal and output it;

Bluetooth headset 402, used to demodulate and play the received fifth signal;

The microphone 403 is used to directly play the fourth signal when the switching control module 301 does not detect the FM Bluetooth playback signal.

In one embodiment, with the structure shown in FIG. 4 , the switch control module 301 can be further used to: detect whether the non-operation state of any one or more components in the terminal is maintained for more than a set time;

The baseband chip 303 can be further used to: notify the Bluetooth module 305 to stop running, notify other components to enter a low-current sleep mode, and maintain the lowest current consumption.

In one embodiment, with the structure shown in FIG. 4 , the switching control module 301 can be further used to: when there is at least one Bluetooth headset 402 , control the Bluetooth module 305 to split the audio of the fifth signal according to the number of Bluetooth headsets.

Based on the same inventive concept, an embodiment of the present invention also provides a terminal, including an FM playback device. The specific structure is shown in FIG. 5, including:

The switching control module 501 is used to detect whether an external earphone antenna is currently connected; and, to determine whether an FM bluetooth playback signal is currently detected;

The FM receiving chip 502 is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module 501 detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, the switching control module 501 does not detect When an external earphone antenna is connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip 503 is used to modulate the received first signal to generate a second signal and output it to the external earphone 504; and modulate the received third signal to generate a fourth signal; when the switching control module 501 detects FM The fourth signal is output to the Bluetooth module 505 when the Bluetooth signal is played.

In one embodiment, the terminal provided by the embodiment of the present invention may also include another FM playback device, the specific structure of which is shown in Figure 6:

The switching control module 501 is used to detect whether an external earphone antenna is currently connected; and, to determine whether an FM bluetooth playback signal is currently detected;

The FM receiving chip 502 is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module 501 detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, the switching control module 501 does not detect When an external earphone antenna is connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip 503 is used to modulate the received first signal to generate a second signal and output it to the external earphone 504; and modulate the received third signal to generate a fourth signal; when the switching control module 501 detects FM Output the fourth signal to the bluetooth module 505 when the bluetooth is playing the signal;

An external earphone 504 is further used to demodulate and play the received second signal;

The Bluetooth module 505 is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

Bluetooth antenna 601, used to receive the fifth signal and output it;

Bluetooth headset 602, used to demodulate and play the received fifth signal;

The microphone 603 is used to directly play the fourth signal when the switching control module 501 does not detect the FM bluetooth play signal.

In one embodiment, the terminal provided by the embodiment of the present invention may also include another FM playback device, the specific structure of which is shown in Figure 6:

The switching control module 501 is used to detect whether an external earphone antenna is currently connected; and, to determine whether an FM bluetooth playback signal is currently detected;

The FM receiving chip 502 is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module 501 detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, the switching control module 501 does not detect When an external earphone antenna is connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip 503 is used to modulate the received first signal to generate a second signal and output it to the external earphone 504; and modulate the received third signal to generate a fourth signal; when the switching control module 501 detects FM Output the fourth signal to the bluetooth module 505 when the bluetooth is playing the signal;

An external earphone 504 is further used to demodulate and play the received second signal;

The Bluetooth module 505 is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

Bluetooth antenna 601, used to receive the fifth signal and output it;

Bluetooth headset 602, used to demodulate and play the received fifth signal;

Mike 603, used to play the fourth signal directly when the switching control module 501 does not detect the FM bluetooth playback signal;

The switching control module 501 can be further used to: detect whether the non-operation state of any one or more components in the terminal is maintained for more than a set time;

The baseband chip 503 can be further used to: notify the Bluetooth module 602 to stop running, notify other components to enter a low-current sleep mode, and maintain the lowest current consumption.

In one embodiment, the terminal provided by the embodiment of the present invention may also include another FM playback device, the specific structure of which is shown in Figure 6:

The switching control module 501 is used to detect whether an external earphone antenna is currently connected; and, to determine whether an FM bluetooth playback signal is currently detected;

The FM receiving chip 502 is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module 501 detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, the switching control module 501 does not detect When an external earphone antenna is connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output;

The baseband chip 503 is used to modulate the received first signal to generate a second signal and output it to the external earphone 504; and modulate the received third signal to generate a fourth signal; when the switching control module 501 detects FM Output the fourth signal to the bluetooth module 505 when the bluetooth is playing the signal;

An external earphone 504 is further used to demodulate and play the received second signal;

The Bluetooth module 505 is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal;

Bluetooth antenna 601, used to receive the fifth signal and output it;

Bluetooth headset 602, used to demodulate and play the received fifth signal;

Mike 603, used to play the fourth signal directly when the switching control module 501 does not detect the FM bluetooth playback signal;

The switch control module 501 may be further configured to: when there is at least one Bluetooth headset 602, control the Bluetooth module 602 to split the audio of the fifth signal according to the number of the Bluetooth headset.

Based on the same inventive concept, the embodiment of the present invention also provides a second FM playback device, the specific structure of which is shown in Figure 7:

FM receiving chip 701, for outputting the sixth signal;

a baseband chip 702, configured to modulate the sixth signal, and output the generated seventh signal;

Bluetooth module 703, configured to perform Bluetooth modulation on the seventh signal, and output the generated eighth signal;

Bluetooth antenna 704, for outputting the eighth signal;

The bluetooth earphone 705 is used to demodulate and play the received eighth signal.

In one embodiment, with the structure shown in FIG. 7 , the FM receiving chip 701 can be further used to: receive and modulate an FM broadcast signal via a built-in antenna to generate a sixth signal.

Based on the same inventive concept, an embodiment of the present invention also provides a terminal, the specific structure of which is shown in Figure 8, including:

FM receiving chip 801, for outputting the sixth signal;

The baseband chip 802 is configured to modulate the sixth signal and output the generated seventh signal;

Bluetooth module 803, configured to perform Bluetooth modulation on the seventh signal, and output the generated eighth signal;

Bluetooth antenna 804, used to output the eighth signal;

The bluetooth earphone 805 is used to demodulate and play the received eighth signal.

In one embodiment, the terminal provided by the embodiment of the present invention may also include another FM playback device, the specific structure of which is shown in Figure 8:

The FM receiving chip 801 can be further used for: receiving and modulating the FM broadcast signal through the built-in antenna to generate the sixth signal.

In the embodiment of the present invention, the switching control module detects whether there is currently an external earphone antenna connected, and if so, the FM receiving chip receives and modulates the FM broadcast signal through the external earphone antenna, generates a first signal and transmits it to the baseband chip, and then transmits the first signal to the baseband chip through the baseband chip. After modulation, the second signal is generated and output to the external earphone, and the external earphone demodulates and plays the second signal; if not, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna, generates the third signal and transmits it to The baseband chip generates the fourth signal after being modulated by the baseband chip, and judges whether an FM Bluetooth playback signal is currently detected. The fifth signal is output to the Bluetooth headset through the Bluetooth antenna, and the Bluetooth headset demodulates and plays the fifth signal; if not, directly plays the fourth signal through the microphone. That is to say, in the embodiment of the present invention, it is possible to switch between multiple answering modes according to the actual situation or the user's choice, and is not limited to one answering mode, which can improve the user's feeling and experience.

Further, the purpose of receiving FM broadcasts by using the Bluetooth headset can be achieved, avoiding that most mobile terminals with FM functions need to connect an external headset antenna as an FM antenna as mentioned in the prior art. At the same time, the use of Bluetooth headsets to receive FM broadcasts can support wireless networks.

Further, when multiple Bluetooth headsets are configured, the FM signal can be distributed to multiple Bluetooth headsets, thereby creating a wireless network audio environment and realizing the purpose of sharing among multiple people.

Further, the embodiment of the present invention also proposes to set a time threshold according to the needs of the user. When the non-operating state of each component is maintained for more than the set time, the baseband chip notifies the Bluetooth module to stop running, and notifies each component to enter a low-current sleep mode. Current consumption, using this measure can effectively reduce the power consumption of answering calls and prolong the standby time.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their technical equivalents, the present invention also intends to include these modifications and variations.

Claims (12)

1. A frequency modulation FM playing method is characterized in that, comprising: The switching control module detects whether there is currently an external earphone antenna connected; If so, the FM receiving chip receives and modulates the FM broadcast signal through the external earphone antenna, generates a first signal and transmits it to the baseband chip, generates a second signal after being modulated by the baseband chip, and outputs it to the external earphone, and the external earphone demodulating and playing the second signal; If not, the FM receiving chip receives and modulates the FM broadcast signal through the built-in antenna, generates the third signal and transmits it to the baseband chip, generates the fourth signal after being modulated by the baseband chip, and judges whether the FM bluetooth broadcast signal is currently detected , if yes, the baseband chip outputs the fourth signal to the Bluetooth module, the Bluetooth module performs Bluetooth modulation on the fourth signal, and outputs the generated fifth signal to the Bluetooth headset through the Bluetooth antenna, and the Bluetooth module The Bluetooth headset demodulates and plays the fifth signal; if not, directly plays the fourth signal through a microphone; Wherein, when the switching control module detects that the inoperative state of any one or more components in the terminal is maintained for more than a set time, the baseband chip notifies the Bluetooth module to stop running, and notifies other components to enter a low-current sleep mode , to maintain the lowest current consumption. 2. The method according to claim 1, wherein when there is at least one Bluetooth headset, the switching control module controls the Bluetooth module to audio the fifth signal according to the number of the Bluetooth headset. shunt. 3. A frequency modulation FM playing method is characterized in that, comprising: The baseband chip modulates the first signal output by the FM receiving chip, and outputs the generated second signal to the Bluetooth module; The Bluetooth module performs Bluetooth modulation on the second signal, and outputs the generated third signal to the Bluetooth headset through the Bluetooth antenna; The Bluetooth headset demodulates and plays the third signal; When the switching control module detects that any one or more components in the terminal are not in operation for more than a set time, the baseband chip notifies the Bluetooth module to stop running, and notifies other components to enter a low-current sleep mode to maintain the lowest current consumption . 4. The method according to claim 3, wherein the FM receiving chip receives and modulates an FM broadcast signal via a built-in antenna to generate the first signal. 5. A frequency modulation FM broadcasting device, is characterized in that, comprises: The switch control module is used to detect whether an external earphone antenna is currently connected; and to determine whether an FM Bluetooth playback signal is currently detected; The FM receiving chip is used for receiving and modulating the FM broadcast signal via the external earphone antenna when the switching control module detects that an external earphone antenna is currently connected, generating a first signal and outputting it; and, when the switching control module When it is not detected that there is currently an external headphone antenna connected, the FM broadcast signal is received and modulated by the built-in antenna, and a third signal is generated and output; The baseband chip is used to modulate the received first signal to generate a second signal and output it to an external earphone; and modulate the received third signal to generate a fourth signal; when the switching control module detects When the FM bluetooth broadcasts the signal, the fourth signal is output to the bluetooth module, and when the switching control module detects that the inoperative state of any one or more components in the terminal remains beyond the set time, the baseband chip notifies the bluetooth module Stop running and notify other components to enter low-current sleep mode to maintain the lowest current consumption. 6. The device of claim 5, further comprising: An external earphone is further used to demodulate and play the received second signal; The Bluetooth module is further configured to perform Bluetooth modulation on the received fourth signal, and output the generated fifth signal; A bluetooth antenna, configured to receive the fifth signal and output it; Bluetooth earphones, used to demodulate and play the received fifth signal; The microphone is used to directly play the fourth signal when the switching control module does not detect the FM bluetooth play signal. 7. The device according to claim 6, wherein the switching control module is further configured to: detect whether the non-operating state of any one or more components in the terminal is maintained for more than a set time; The baseband chip is further used to: notify the Bluetooth module to stop running, notify other components to enter a low-current sleep mode, and maintain the lowest current consumption. 8. The device according to claim 6, wherein the switching control module is further configured to: when there is at least one Bluetooth headset, control the Bluetooth module to control the Bluetooth headset according to the number of the Bluetooth headset. The fifth signal performs audio splitting. 9. A terminal, characterized in that it comprises the FM player as claimed in claim 5, 6, 7 or 8. 10. A frequency modulation FM broadcasting device, is characterized in that, comprises: FM receiving chip, used to output the first signal; a baseband chip, configured to modulate the first signal and output the generated second signal; A bluetooth module, configured to perform bluetooth modulation on the second signal, and output the generated third signal; A bluetooth antenna, for outputting the third signal to a bluetooth headset; A bluetooth earphone, used to demodulate and play the received third signal; A switching control module, configured to notify the bluetooth module to stop running, and notify other components to enter a low-current sleep mode when it is detected that any one or more components in the terminal are in an inoperative state for longer than a set time, maintain minimum current consumption. 11. The device according to claim 10, wherein the FM receiving chip is further configured to: receive and modulate an FM broadcast signal via a built-in antenna to generate the first signal. 12. A terminal, characterized by comprising the FM player as claimed in claim 10 or 11.

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