Call recording circuit and electronic equipment

Abstract

The utility model discloses a call recording circuit and electronic equipment, and belongs to the technical field of recording. A pickup circuit is used for collecting sound so as to output an audio signal; the vibration circuit senses a vibration signal generated by the mobile terminal and converts the vibration signal into an electric signal; the control circuit accesses an input signal, responds to the input signal, obtains first audio information based on the audio signal and the electric signal, and outputs a first communication signal according to the first audio information; the mobile terminal obtains first audio information based on the first communication signal and stores the first audio information; therefore, the call recording can be obtained without a Bluetooth earphone, and the call does not need to be switched to a Bluetooth mode, so that the call sound quality is improved.

Description

Technical Field

[0001] The present application belongs to the field of recording technology, and in particular, relates to a call recording circuit and electronic equipment. Background Art

[0002] At present, some mobile terminals on the market cannot record during calls, which brings inconvenience to users. In this regard, the relevant technology obtains the audio of the other party through the audio Bluetooth solution of the mobile terminal itself, so the solution provided by the existing technology needs to be configured with a call Bluetooth headset to be used normally. However, in actual use, customers do not necessarily carry Bluetooth headsets with them at all times, and some customers do not like to wear Bluetooth headsets for calls; in addition, after the mobile phone call switches to Bluetooth mode, the call quality is affected by Bluetooth, and thus the call quality will decrease.

[0003] Therefore, there is an urgent need for a call recording circuit that can realize the recording function without a Bluetooth headset and has high call sound quality. Utility Model Content

[0004] The purpose of the present application is to provide a call recording circuit and electronic device, aiming to solve the problem that some existing mobile terminals require Bluetooth headsets to record during calls and the call quality is low.

[0005] The embodiment of the present application provides a call recording circuit, which is connected to a mobile terminal and includes:

[0006] A sound pickup circuit configured to collect sound to output an audio signal;

[0007] a vibration circuit configured to sense a vibration signal generated by the mobile terminal and convert the vibration signal into an electrical signal;

[0008] a control circuit connected to the pickup circuit and the vibration circuit, configured to receive an input signal, obtain first audio information based on the audio signal and the electrical signal in response to the input signal, and output a first communication signal according to the first audio information;

[0009] The mobile terminal is connected to the control circuit, and is configured to obtain the first audio information based on the first communication signal and store the first audio information.

[0010] In one of the embodiments, the input signal is a second communication signal;

[0011] The mobile terminal is further configured to output the second communication signal in response to its own call status.

[0012] In one embodiment, the input signal is a key signal;

[0013] The call recording circuit also includes:

[0014] The key circuit is connected to the control circuit and is configured to output the key signal according to user operation.

[0015] In one of the embodiments, the control circuit is further configured to output a first serial communication signal according to the input signal;

[0016] The call recording circuit also includes:

[0017] a clock circuit, connected to the control circuit, and configured to output a second serial communication signal according to the first serial communication signal;

[0018] The control circuit is specifically configured to obtain the first audio information based on the audio signal and the electrical signal in response to the input signal, and obtain time information based on the second serial communication signal, and output the first communication signal according to the first audio information and the time information.

[0019] In one of the embodiments, the pickup circuit includes a plurality of sub-pickup modules;

[0020] The sub-sound pickup module is configured to collect sound to output a sub-audio signal;

[0021] The control circuit is specifically configured to access the input signal, obtain first audio information based on a plurality of the sub-audio signals and the electrical signal in response to the input signal, and output a first communication signal according to the audio signal.

[0022] In one embodiment, the control circuit includes a Bluetooth chip, a first inductor, a second inductor and a first capacitor;

[0023] The first silicon microphone audio signal pickup end of the Bluetooth chip serves as the first sub-audio signal input end of the control circuit, and is connected to the first sub-pickup module to input the first sub-audio signal; the second silicon microphone audio signal pickup end of the Bluetooth chip serves as the second sub-audio signal input end of the control circuit, and is connected to the second sub-pickup module to input the second sub-audio signal; the power supply end of the Bluetooth chip is connected to the first sub-pickup module, the second sub-pickup module and the vibration circuit; the bone conduction microphone audio signal pickup end of the Bluetooth chip serves as the electrical signal input end of the control circuit, and is connected to the vibration circuit to input the electrical signal; the external antenna end of the Bluetooth chip is connected to the first end of the second inductor and the first end of the first capacitor, the second end of the first capacitor is connected to the first end of the first inductor and the antenna, and the antenna is used to output the first communication signal; the second end of the first inductor and the second end of the second inductor are commonly connected to the power ground.

[0024] In one of the embodiments, the mobile terminal is further configured to output connection information based on the communication status with the control circuit;

[0025] The control circuit is configured to access the input signal, obtain first audio information based on the audio signal and the electrical signal in response to the connection information and the input signal, and output a first communication signal according to the first audio signal.

[0026] In one of the embodiments, the control circuit is further configured to obtain second audio information based on the audio signal and the electrical signal in response to the stopping of the connection information and the input signal, and output a storage signal according to the second audio information;

[0027] The call recording circuit also includes:

[0028] The storage circuit is configured to obtain the second audio information based on the storage signal and store the second audio information.

[0029] In one of the embodiments, the control circuit is further configured to output an indication signal according to the input signal;

[0030] The call recording circuit also includes:

[0031] The indication circuit is connected to the control circuit and is configured to indicate according to the indication signal.

[0032] An embodiment of the present application also provides an electronic device, which includes the above-mentioned call recording circuit.

[0033] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the sound pickup circuit collects the user's voice to output an audio signal, the vibration circuit collects the audio of the other party of the call by sensing the vibration signal generated by the mobile terminal to output an electrical signal, the control circuit responds to the input signal, obtains the first audio information based on the audio signal and the electrical signal, and outputs the first communication signal according to the first audio information; the mobile terminal obtains the first audio information based on the first communication signal and stores the first audio information, so that the call recording can be obtained without configuring a Bluetooth headset, and the call does not need to be switched to Bluetooth mode, thereby improving the call quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical application in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A structural diagram of a call recording circuit provided in one embodiment of the present application;

[0036] Figure 2 Another structural schematic diagram of a call recording circuit provided in an embodiment of the present application;

[0037] Figure 3 Another structural schematic diagram of a call recording circuit provided in an embodiment of the present application;

[0038] Figure 4 Another structural schematic diagram of a call recording circuit provided in an embodiment of the present application;

[0039] Figure 5 Another structural schematic diagram of a call recording circuit provided in an embodiment of the present application;

[0040] Figure 6 Another structural schematic diagram of a call recording circuit provided in an embodiment of the present application;

[0041] Figure 7 Another structural schematic diagram of a call recording circuit provided in an embodiment of the present application;

[0042] Figure 8 A partial exemplary circuit schematic diagram of a call recording circuit provided in one embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] Figure 1 The structure diagram of the call recording circuit provided by an embodiment of the present application is shown. For the convenience of explanation, only the part related to the present embodiment is shown, which is described in detail as follows:

[0048] The call recording circuit is connected to the mobile terminal 123 , and includes a sound pickup circuit 10 , a vibration circuit 20 and a control circuit 30 .

[0049] The sound pickup circuit 10 is configured to collect sound to output an audio signal.

[0050] The vibration circuit 20 is configured to sense the vibration signal generated by the mobile terminal 123 and convert the vibration signal into an electrical signal.

[0051] The control circuit 30 is connected to the pickup circuit 10 and the vibration circuit 20, and is configured to receive an input signal, obtain first audio information based on the audio signal and the electrical signal in response to the input signal, and output a first communication signal according to the first audio information.

[0052] The mobile terminal 123 is connected to the control circuit 30, and is configured to obtain the first audio information based on the first communication signal and store the first audio information.

[0053] In a specific implementation, the first communication signal may be a Bluetooth communication signal.

[0054] By way of example and not limitation, Figure 2 As shown, the input signal is the second communication signal.

[0055] The mobile terminal 123 is further configured to output a second communication signal in response to its own call status.

[0056] In a specific implementation, the second communication signal may be a Bluetooth communication signal.

[0057] It is understandable that the mobile terminal 123 can detect whether it is currently in a call state through a related application (APPlication, APP), and output the second communication signal in response to its own call state.

[0058] The mobile terminal 123 outputs a second communication signal in response to its own call status. The control circuit 30 responds to the second communication signal, obtains the first audio information based on the audio signal and the electrical signal, and outputs the first communication signal according to the first audio information, thereby realizing automatic recording of the call without the need for user operation triggering, thereby improving the convenience of use.

[0059] The mobile terminal 123 is also configured to output connection information based on the communication status with the control circuit 30 .

[0060] The control circuit 30 is configured to receive the input signal, obtain the first audio information based on the audio signal and the electrical signal in response to the connection information and the input signal, and output the first communication signal according to the first audio signal.

[0061] When the mobile terminal 123 detects that it is in a communication state with the call recording circuit, the second communication signal output by the mobile terminal 123 also carries connection information. At this time, the call recording circuit outputs the first communication signal to the mobile terminal 123 in real time. The APP in the mobile terminal 123 decodes the received first communication signal, obtains the first audio information, and stores the first audio information, thereby realizing real-time transmission of recorded audio and improving user convenience.

[0062] By way of example and not limitation, Figure 3 As shown, the input signal is a key signal.

[0063] The call recording circuit also includes a key circuit 40 connected to the control circuit 30 and configured to output a key signal according to a user operation.

[0064] It should be noted that the APP on the mobile terminal 123 can not always obtain its own call status. In some areas, the mobile terminal 123 may restrict some APPs from obtaining their own call status. At this time, the normal operation of the call recording circuit is ensured by the key circuit 40.

[0065] In actual use, the user can set the input signal as the second communication signal or the key signal through software settings on the mobile terminal 123.

[0066] By way of example and not limitation, Figure 4 As shown, the control circuit 30 is further configured to output a first serial communication signal according to the input signal.

[0067] The call recording circuit further includes a clock circuit 50 connected to the control circuit 30 and configured to output a second serial communication signal according to the first serial communication signal.

[0068] The control circuit 30 is specifically configured to obtain first audio information based on the audio signal and the electrical signal in response to the input signal, obtain time information based on the second serial communication signal, and output a first communication signal according to the first audio information and the time information.

[0069] The second serial communication signal carrying time information through the clock circuit 50 enables the audio file stored in the mobile terminal 123 to carry time information, which is convenient for the user to manage the audio file and improves the practicality of the call recording circuit.

[0070] By way of example and not limitation, Figure 5 As shown, the pickup circuit 10 includes a plurality of sub-pickup modules 11 .

[0071] The sub-sound pickup module 11 is configured to collect sound to output a sub-audio signal.

[0072] The control circuit 30 is specifically configured to receive an input signal, obtain first audio information based on a plurality of sub-audio signals and the electrical signal in response to the input signal, and output a first communication signal according to the audio signal.

[0073] The multiple sub-sound pickup modules 11 improve the collection range and the quality of the audio signal.

[0074] By way of example and not limitation, Figure 6 As shown, the control circuit 30 is further configured to obtain second audio information based on the audio signal and the electrical signal in response to the stop of the connection information and the input signal, and output a storage signal according to the second audio information.

[0075] The call recording circuit also includes a storage circuit 60 configured to obtain second audio information based on the storage signal and store the second audio information.

[0076] In a specific implementation, the storage circuit 60 stores the second audio information when the control circuit 30 is not communicating with the mobile terminal 123. In a specific implementation, after storing the second audio information, when the control circuit 30 is communicating with the mobile terminal 123, the storage circuit 60 can transmit the second audio information to the mobile terminal 123 through the control circuit 30.

[0077] The storage circuit 60 enables the call recording to be stored even if the control circuit 30 and the mobile terminal 123 are not in a communication state, thereby improving the reliability of the call recording circuit.

[0078] The control circuit 30 is further configured to output an indication signal according to the input signal.

[0079] By way of example and not limitation, Figure 7 As shown, the call recording circuit also includes an indication circuit 70, which is connected to the control circuit 30 and is configured to give indications according to the indication signal.

[0080] The indicating circuit 70 enriches the functionality of the circuit.

[0081] Figure 8 A partial exemplary circuit structure of a call recording circuit provided in an embodiment of the present application is shown. For the sake of convenience, only the part related to the embodiment of the present application is shown, which is described in detail as follows:

[0082] The control circuit 30 includes a Bluetooth chip U1 , a first inductor L1 , a second inductor L2 , and a first capacitor C1 .

[0083] The first silicon microphone audio signal pickup terminal MEMSMIC1 of the Bluetooth chip U1 is used as the first sub-audio signal input terminal of the control circuit 30, and is connected to the first sub-pickup module 11 to input the first sub-audio signal; the second silicon microphone audio signal pickup terminal MEMSMIC2 of the Bluetooth chip U1 is used as the second sub-audio signal input terminal of the control circuit 30, and is connected to the second sub-pickup module 11 to input the second sub-audio signal; the power supply terminal MIC1_LDO_1 of the Bluetooth chip U1 is connected to the first sub-pickup module 11, the second sub-pickup module 11 and the vibration circuit 20; the bone conduction microphone audio signal pickup terminal SVMIC of the Bluetooth chip U1 is used as the electrical signal input terminal of the control circuit 30, and is connected to the vibration circuit 20 to input the electrical signal; the Bluetooth chip external antenna terminal BT_ANT of the Bluetooth chip U1 is connected to the first end of the second inductor L2 and the first end of the first capacitor C1, the second end of the first capacitor C1 is connected to the first end of the first inductor L1 and the antenna ANT, and the antenna ANT is used to output the first communication signal; the second end of the first inductor L1 and the second end of the second inductor L2 are commonly connected to the power ground.

[0084] The memory card power supply network terminal SD_PG of the Bluetooth chip U1 is connected to the storage circuit 60, the memory card clock terminal SDCLK ​​of the Bluetooth chip U1, the memory card command terminal SDCMD of the Bluetooth chip U1 and the memory card data terminal SDDAT of the Bluetooth chip U1 are collectively used as the storage signal output terminal of the control circuit 30, connected to the storage circuit 60 to output the storage signal; the recording key terminal KEY1 of the Bluetooth chip U1 is used as the key signal input terminal of the control circuit 30, connected to the key circuit 40 to input the key signal; the recording status light terminal LED1 of the Bluetooth chip U1 is used as the indication signal output terminal of the control circuit 30, connected to the indication circuit 70 to output the indication signal; the I2C data terminal IIC_SDA of the Bluetooth chip U1 and the I2C clock terminal IIC_SCL of the Bluetooth chip U1 are collectively used as the first serial communication signal output terminal of the control circuit 30 and the second serial communication signal input terminal of the control circuit 30, connected to the clock circuit 50 to output the first serial communication signal and input the second serial communication signal, and the antenna ANT is also used to receive the second communication signal.

[0085] The Bluetooth chip can directly supply power to the sound pickup circuit 10, the vibration circuit 20 and the storage circuit 60. In addition, the Bluetooth chip U1 has high integration and is easy to use.

[0086] The vibration circuit 20 includes a bone conduction microphone MK1, a third resistor R3, a fourth resistor R4, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8.

[0087] The first end of the sixth capacitor C6 serves as the vibration signal output end of the vibration circuit 20 and is connected to the control circuit 30 to output a vibration signal; the second end of the sixth capacitor C6 is connected to the positive output end OUT+ of the bone conduction microphone MK1, the negative output end OUT- of the bone conduction microphone MK1 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the first end of the eighth capacitor C8, the power supply end VDD of the bone conduction microphone MK1 is connected to the first end of the seventh capacitor C7 and the first end of the third resistor R3, and the second end of the third resistor R3 is connected to the control circuit 30; the ground terminal GND of the bone conduction microphone MK1, the second end of the eighth capacitor C8 and the second end of the seventh capacitor C7 are connected to the analog ground.

[0088] The circuit is simple and reliable.

[0089] The first sub-sound pickup module 11 includes a first silicon microphone MIC1, a first resistor R1, a second capacitor C2 and a third capacitor C3.

[0090] The first end of the second capacitor C2 serves as the sub-audio signal output end of the first sub-pickup module 11, and is connected to the control circuit 30 to output the first sub-audio signal; the second end of the second capacitor C2 is connected to the output end OUT of the first silicon microphone MIC1, the power supply end VDD of the first silicon microphone MIC1 is connected to the first end of the third capacitor C3 and the first end of the first resistor R1, the second end of the first resistor R1 is connected to the control circuit 30, and the ground end GND of the first silicon microphone MIC1 and the second end of the third capacitor C3 are connected to the analog ground.

[0091] The second sub-sound pickup module 11 includes a second silicon microphone MIC2, a second resistor R2, a fourth capacitor C4 and a fifth capacitor C5.

[0092] The first end of the fourth capacitor C4 serves as the sub-audio signal output end of the second sub-pickup module 11, and is connected to the control circuit 30 to output the second sub-audio signal; the second end of the fourth capacitor C4 is connected to the output end OUT of the second silicon microphone MIC2, the power supply end VDD of the second silicon microphone MIC2 is connected to the first end of the fifth capacitor C5 and the first end of the second resistor R2, the second end of the second resistor R2 is connected to the control circuit 30, and the ground end GND of the second silicon microphone MIC2 and the second end of the fifth capacitor C5 are connected to the analog ground.

[0093] The key circuit 40 includes a key S1 .

[0094] The first end of the key S1 is used as the key signal output end of the key circuit 40 and is connected to the control circuit 30 to output the key signal; the second end of the key S1 is connected to the power ground.

[0095] The clock circuit 50 includes a clock chip U3.

[0096] The serial data input and output terminal SDA of the clock chip U3 and the serial clock input terminal SCL of the clock chip U3 serve together as the first serial communication signal input terminal of the clock circuit 50 and the second serial communication signal output terminal of the clock circuit 50, and are connected to the control circuit 30 to input the first serial communication signal and output the second serial communication signal.

[0097] The storage circuit 60 includes a TF card U3 and a sixth resistor R6.

[0098] The power supply terminal VCC of the TF card U3 is connected to the control circuit 30, the clock line terminal CLK of the TF card U3, the command terminal CMD of the TF card U3, the data terminal DAT2 of the TF card U3 and the first end of the sixth resistor R6 are commonly used as the storage signal input terminal of the storage circuit 60, and are connected to the control circuit 30 to input the storage signal; the ground terminal GND of the TF card U3 and the second end of the sixth resistor R6 are connected to the power ground.

[0099] The indicating circuit 70 includes a fifth resistor R5 and a diode D1.

[0100] The first end of the fifth resistor R5 is connected to the control circuit 30 as the indication signal input end of the indication circuit 70 to input the indication signal; the second end of the fifth resistor R5 is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the power ground.

[0101] The following is a combination of working principles Figure 8 As shown for further explanation:

[0102] The first silicon microphone MIC1 collects sound, and outputs a first sub-audio signal to the first silicon microphone audio signal pickup end MEMSMIC1 of the Bluetooth chip U1 via the first end of the second capacitor C2; the second silicon microphone MIC2 collects sound, and outputs a second sub-audio signal to the second silicon microphone audio signal pickup end MEMSMIC2 of the Bluetooth chip U1 via the first end of the fourth capacitor C4; the bone conduction microphone MK1 senses the vibration signal generated by the mobile terminal 123, and converts the vibration signal into an electrical signal, which is output to the bone conduction microphone audio signal pickup end SVMIC of the Bluetooth chip U1 via the first end of the sixth capacitor C6.

[0103] If the user chooses to start recording after pressing the key circuit 40, the input signal is a key signal at this time. After the user presses the key S1, the first end of the key S1 outputs the key signal to the recording key terminal KEY1 of the Bluetooth chip U1. In response to the key signal, the Bluetooth chip U1 outputs a first serial communication signal from the I2C data terminal IIC_SDA of the Bluetooth chip U1 and the I2C clock terminal IIC_SCL of the Bluetooth chip U1 to the serial data input and output terminal SDA of the clock chip U3 and the serial clock input terminal SCL of the clock chip U3. The clock chip U3 outputs a second serial communication signal from the serial data input and output terminal SDA of the clock chip U3 and the serial clock input terminal SCL of the clock chip U3 to the I2C data terminal IIC_SDA of the Bluetooth chip U1 and the I2C clock terminal IIC_SCL of the Bluetooth chip U1 according to the first serial communication signal. If the user selects a working mode in which the mobile terminal 123 starts recording in response to its own call status, the input signal at this time is the second communication signal. After entering the call status, the mobile terminal 123 sends the second communication signal, the antenna ANT receives the second communication signal, converts the second communication signal into a wired communication signal, and transmits the first wired communication signal to the Bluetooth chip external antenna terminal BT_ANT of the Bluetooth chip U1. In response to the first wired communication signal, the Bluetooth chip U1 outputs a first serial communication signal from the I2C data terminal IIC_SDA of the Bluetooth chip U1 and the I2C clock terminal IIC_SCL of the Bluetooth chip U1 to the serial data input and output terminal SDA of the clock chip U3 and the serial clock input terminal SCL of the clock chip U3. The clock chip U3 outputs a second serial communication signal from the serial data input and output terminal SDA of the clock chip U3 and the serial clock input terminal SCL of the clock chip U3 to the I2C data terminal IIC_SDA of the Bluetooth chip U1 and the I2C clock terminal IIC_SCL of the Bluetooth chip U1 according to the first serial communication signal.

[0104] If the mobile terminal 123 is in a connected state when communicating with the Bluetooth chip U1 at this time, the mobile terminal 123 outputs connection information based on the communication state with the Bluetooth chip U1, and the Bluetooth chip U1 responds to the connection information and the input signal, obtains the first audio information based on the audio signal and the electrical signal, and obtains the time information based on the second serial communication signal, and outputs the first communication signal to the mobile terminal 123 via the antenna ANT according to the first audio information and the time information, and the mobile terminal 123 obtains the first audio information and the time information based on the first communication signal, and stores the first audio information and the time information; if the mobile terminal 123 is in a disconnected state when communicating with the Bluetooth chip U1 at this time, the Bluetooth chip U1 responds to the stop of the connection information and the input signal, and obtains the second audio information based on the audio signal and the electrical signal. Information is obtained, and time information is obtained based on the second serial communication signal, and according to the second audio information and time information, a storage signal is output from the storage card clock terminal SDCLK ​​of the Bluetooth chip U1, the storage card command terminal SDCMD of the Bluetooth chip U1, and the storage card data terminal SDDAT of the Bluetooth chip U1 to the clock line terminal CLK of the TF card U3, the command terminal CMD of the TF card U3, the data terminal DAT2 of the TF card U3, and the first end of the sixth resistor R6, the TF card U3 obtains the second audio information and time information based on the storage signal, and stores the second audio information and time information, and after the mobile terminal 123 resumes communication with the Bluetooth chip U1, the TF card U3 transmits the stored information to the mobile terminal 123 through the Bluetooth chip U1, and the mobile terminal 123 stores it.

[0105] An embodiment of the present application also provides an electronic device, which includes the above-mentioned call recording circuit.

[0106] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0107] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A call recording circuit, characterized in that: Connect with mobile terminal, including: A sound pickup circuit configured to collect sound to output an audio signal; a vibration circuit configured to sense a vibration signal generated by the mobile terminal and convert the vibration signal into an electrical signal; a control circuit connected to the pickup circuit and the vibration circuit, configured to receive an input signal, obtain first audio information based on the audio signal and the electrical signal in response to the input signal, and output a first communication signal according to the first audio information; The mobile terminal is connected to the control circuit, and is configured to obtain the first audio information based on the first communication signal and store the first audio information.

2. The call recording circuit as claimed in claim 1, characterized in that: The input signal is a second communication signal; The mobile terminal is further configured to output the second communication signal in response to its own call status.

3. The call recording circuit as claimed in claim 1, characterized in that: The input signal is a key signal; The call recording circuit also includes: The key circuit is connected to the control circuit and is configured to output the key signal according to user operation.

4. The call recording circuit as claimed in claim 1, characterized in that: The control circuit is further configured to output a first serial communication signal according to the input signal; The call recording circuit also includes: a clock circuit, connected to the control circuit, and configured to output a second serial communication signal according to the first serial communication signal; The control circuit is specifically configured to obtain the first audio information based on the audio signal and the electrical signal in response to the input signal, and obtain time information based on the second serial communication signal, and output the first communication signal according to the first audio information and the time information.

5. The call recording circuit as claimed in claim 1, characterized in that: The sound pickup circuit includes a plurality of sub-sound pickup modules; The sub-sound pickup module is configured to collect sound to output a sub-audio signal; The control circuit is specifically configured to access the input signal, obtain first audio information based on a plurality of the sub-audio signals and the electrical signal in response to the input signal, and output a first communication signal according to the audio signal.

6. The call recording circuit as claimed in claim 5, characterized in that: The control circuit includes a Bluetooth chip, a first inductor, a second inductor and a first capacitor; The first silicon microphone audio signal pickup end of the Bluetooth chip serves as the first sub-audio signal input end of the control circuit, and is connected to the first sub-pickup module to input the first sub-audio signal; the second silicon microphone audio signal pickup end of the Bluetooth chip serves as the second sub-audio signal input end of the control circuit, and is connected to the second sub-pickup module to input the second sub-audio signal; the power supply end of the Bluetooth chip is connected to the first sub-pickup module, the second sub-pickup module and the vibration circuit; the bone conduction microphone audio signal pickup end of the Bluetooth chip serves as the electrical signal input end of the control circuit, and is connected to the vibration circuit to input the electrical signal; the external antenna end of the Bluetooth chip is connected to the first end of the second inductor and the first end of the first capacitor, the second end of the first capacitor is connected to the first end of the first inductor and the antenna, and the antenna is used to output the first communication signal; the second end of the first inductor and the second end of the second inductor are commonly connected to the power ground.

7. The call recording circuit as claimed in claim 1, characterized in that: The mobile terminal is further configured to output connection information based on a communication status with the control circuit; The control circuit is configured to access the input signal, obtain first audio information based on the audio signal and the electrical signal in response to the connection information and the input signal, and output a first communication signal according to the first audio signal.

8. The call recording circuit as claimed in claim 7, characterized in that: The control circuit is further configured to obtain second audio information based on the audio signal and the electrical signal in response to the stop of the connection information and the input signal, and output a storage signal according to the second audio information; The call recording circuit also includes: The storage circuit is configured to obtain the second audio information based on the storage signal and store the second audio information.

9. The call recording circuit as claimed in claim 1, characterized in that: The control circuit is further configured to output an indication signal according to the input signal; The call recording circuit also includes: The indication circuit is connected to the control circuit and is configured to indicate according to the indication signal.

10. An electronic device, characterized in that: Comprising the call recording circuit as described in any one of claims 1 to 9.

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