A Bluetooth recording method and recording pen based on dynamic characteristic mapping

Abstract

The present invention discloses a Bluetooth recording method and a voice recorder based on dynamic characteristic mapping, which realize dual-role communication between a mobile phone and a headset and efficient recording of voice data through the voice recorder. The voice recorder obtains Bluetooth characteristic information from a mobile phone through dynamic characteristic mapping technology and maps it to its own audio gateway characteristics, and then transmits it to the headset, ensuring seamless compatibility and efficient communication between the headset and the mobile phone. Using a connection sequence management strategy, the voice recorder preferentially establishes a Bluetooth connection with the mobile phone, and then connects with the headset after completing the acquisition of characteristic information, solving the parameter negotiation problem between the mobile phone and the headset. The present invention supports synchronous forwarding and storage of uplink and downlink voice data, combines timestamp technology to ensure the consistency and integrity of recording data, and provides a variety of recording storage methods such as local storage, wireless transmission and interface output, which can flexibly adapt to a variety of application scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of Bluetooth communication and audio processing, and in particular to a Bluetooth recording method and a recording pen based on dynamic characteristic mapping. Background Art

[0002] As a mainstream form of wireless communication, Bluetooth technology is widely used in audio transmission between mobile phones and external devices (such as headphones, speakers, etc.). Especially in the scenario of telephone calls, Bluetooth headphones can realize voice input and output by pairing with mobile phones, improving the convenience of user calls. However, there are still many technical limitations in the existing technology for the demand of call recording, especially in the scenario of real-time call recording.

[0003] Currently, Bluetooth headsets on the market usually only support calls and simple audio playback functions, but do not have the ability to record calls. If users need to record calls, they usually need to rely on the recording function on the mobile phone. However, the existing method of recording calls on the mobile phone has the following problems:

[0004] 1. The recording function of a mobile phone often cannot record the user's voice on the headset, but can only record the audio data transmitted from the other party, resulting in incomplete recording content. It cannot meet the needs of complete recording in scenarios such as legal evidence collection and business records.

[0005] 2. Even if some mobile phones can achieve simultaneous recording of uplink and downlink voice, their functions are usually limited by device compatibility and cannot work properly in all combinations of mobile phones and Bluetooth headsets, reducing the versatility of the technical solution.

[0006] 3. The operation of existing mobile phone recording functions mostly relies on users to manually start them, lacks automation support, and is prone to recording failures due to missed operations, especially at the moment a call is connected, when the recording function cannot be started quickly.

[0007] In order to deal with the above problems, some people in the industry have also tried to realize call recording through external recording devices, such as using dedicated Bluetooth recording devices. Such devices usually use themselves as intermediate nodes to establish Bluetooth connections with mobile phones and headphones respectively, thereby recording the content of calls. However, the existing external recording device solutions still have the following new problems, such as the connection between the recording device and the mobile phone and the headset mostly relies on fixed protocol characteristics, and does not fully consider the differences in Bluetooth characteristics of different mobile phones and headset devices, which is prone to recording failure or communication interruption due to incompatibility issues; current recording devices usually act as an independent node and cannot effectively hide their existence, which complicates the device communication process, not only reduces communication efficiency, but also increases the difficulty of user operation; and the recording function of existing recording devices is mostly limited to local storage, lacks flexible data transmission methods, and cannot meet users' needs for real-time transmission and subsequent processing.

[0008] Therefore, how to implement a solution that can take into account device compatibility, communication efficiency and recording flexibility during Bluetooth communication has become a technical problem to be solved by the present invention. Summary of the invention

[0009] The technical problem solved by the present invention is to provide a Bluetooth recording method and a voice recorder based on dynamic characteristic mapping in response to the defects existing in the above-mentioned prior art, so as to solve the problems of incomplete call recording, insufficient device compatibility, low communication efficiency and inflexible recording method proposed in the above-mentioned background technology.

[0010] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0011] A Bluetooth recording method based on dynamic characteristic mapping comprises the following steps:

[0012] Step 1, providing a voice recorder, wherein the voice recorder includes a Bluetooth module, a processor and a storage medium;

[0013] Step 2, the recording pen establishes a first Bluetooth connection with the headset through the Bluetooth module, and the recording pen communicates with the headset as an audio gateway device in the first Bluetooth connection;

[0014] Step 3, the voice recorder establishes a second Bluetooth connection with the mobile phone through the Bluetooth module, and the voice recorder communicates with the mobile phone as a Bluetooth hands-free device in the second Bluetooth connection;

[0015] Step 4, when the second Bluetooth connection is established, the voice recorder sends a feature query instruction to the mobile phone to obtain and store the Bluetooth feature information of the mobile phone, wherein the Bluetooth feature information includes but is not limited to the Bluetooth hands-free function and audio codec capability supported by the mobile phone;

[0016] Step 5, during the process of establishing the first Bluetooth connection, the voice recorder maps the Bluetooth characteristic information to the audio gateway device characteristics of the voice recorder, and sends the mapped Bluetooth characteristic information to the headset, so that the headset can communicate with the voice recorder based on the Bluetooth characteristic information of the mobile phone;

[0017] Step 6, the voice recorder transfers and records voice data between the second Bluetooth connection and the first Bluetooth connection, including:

[0018] forwarding the downlink voice data sent by the mobile phone to the headset via the first Bluetooth connection, and synchronously storing it in the storage medium;

[0019] The uplink voice data sent by the headset is forwarded to the mobile phone through the second Bluetooth connection and synchronously stored in the storage medium.

[0020] As a further solution of the present invention, the Bluetooth characteristic information mapping in step 5 includes the following steps:

[0021] After the second Bluetooth connection is established, the voice recorder loads the Bluetooth characteristic information returned by the mobile phone into the processor;

[0022] When establishing the first Bluetooth connection, setting the loaded Bluetooth characteristic information as the audio gateway device characteristic of the voice recorder;

[0023] The voice recorder sends the Bluetooth characteristic information to the headset through the first Bluetooth connection, so that the headset can communicate with the voice recorder based on the received Bluetooth characteristic information.

[0024] As a further solution of the present invention, the voice recorder adopts the following connection sequence in the process of establishing the second Bluetooth connection and the first Bluetooth connection with the mobile phone and the headset respectively: first, establish the second Bluetooth connection with the mobile phone; after completing the query and storage of the Bluetooth characteristic information, start the process of establishing the first Bluetooth connection; after the first Bluetooth connection is established, start the transfer and recording functions of the voice data.

[0025] As a further solution of the present invention, the voice recorder supports the following storage methods of recording data during the recording process: storing the recording data in the storage medium; sending the recording data to a remote cloud storage server in real time via wireless transmission; and outputting the recording data to an external device via a wired interface.

[0026] As a further solution of the present invention, the voice recorder has an automatic reconnection function when restarted, including: automatically and preferentially connecting to the mobile phone device that was successfully connected most recently; after establishing a second Bluetooth connection with the mobile phone device, automatically scanning and connecting to the headphone device that was successfully connected most recently.

[0027] As a further solution of the present invention, the voice recorder supports a dual-chip architecture, including: the first chip is used to realize the role of a Bluetooth hands-free device and establish a second Bluetooth connection with a mobile phone; the second chip is used to realize the role of an audio gateway device and establish a first Bluetooth connection with a headset; the first chip and the second chip transmit voice data and interact with commands through a wired communication interface.

[0028] As a further solution of the present invention, the voice recorder has the function of synchronously processing uplink and downlink voice data when forwarding voice data, including: synchronously forwarding uplink voice data sent by the headset to the mobile phone, and storing it in the storage medium; synchronously forwarding downlink voice data sent by the mobile phone to the headset, and storing it in the storage medium; during the storage process, adding timestamps to the uplink and downlink voice data to ensure the time synchronization of the recorded data.

[0029] A voice recorder comprises: a Bluetooth module for establishing Bluetooth connections with a mobile phone and a headset respectively; a processor for managing Bluetooth connections, forwarding voice data and performing Bluetooth feature mapping; a storage medium for storing uplink and downlink voice data and Bluetooth feature information; and a communication interface for performing data interaction under a dual-chip architecture or outputting recording data to an external device.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. Through the dual-role switching design of the voice recorder in Bluetooth communication, it can act as a hands-free device (HFP role) on the mobile phone side and an audio gateway device (AG role) on the headset side. This dynamic implementation of the dual-role combination breaks through the limitation of Bluetooth devices in the existing technology that are limited to single-role communication, allowing the voice recorder to not only connect to the mobile phone and headset at the same time, but also transfer data between the two. This dual-role combination further optimizes device compatibility and communication efficiency through dynamic feature mapping technology.

[0032] 2. The design of dynamic feature mapping obtains the Bluetooth feature information supported by the mobile phone and maps it to the characteristics of the voice recorder as an audio gateway device, so that the headset can directly perceive the characteristics of the mobile phone during communication without directly identifying the characteristic information of the voice recorder. This feature disguise and transmission method not only realizes the seamless connection between the headset and the mobile phone, but also avoids the incompatibility issues in the Bluetooth protocol, making the transfer function of the voice recorder transparent to the user, thereby effectively improving the user experience.

[0033] 3. Multi-step communication and connection sequence from mobile phone to headset: first establish a second Bluetooth connection with the mobile phone to obtain and store the mobile phone's characteristic information; then establish a first Bluetooth connection with the headset, and achieve communication matching of the devices based on the characteristic mapping function. This sequential connection method not only ensures that the headset receives characteristic information that matches the mobile phone, but also avoids communication errors or recording failures caused by confusion in the connection sequence in the prior art.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 : Schematic diagram of the Bluetooth voice recorder system structure based on dynamic feature mapping.

[0037] Figure 2 : Schematic diagram of Bluetooth feature mapping process.

[0038] Figure 3 : Schematic diagram of synchronous forwarding of uplink and downlink voice data.

[0039] Figure 4 : Schematic diagram of the connection sequence between the voice recorder, mobile phone and headphones.

[0040] Figure 5 : Schematic diagram of various recording storage methods of a voice recorder.

[0041] Figure 6 : Schematic diagram of dual-chip architecture. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figures 1 to 6 In an embodiment of the present invention, a Bluetooth recording method and a recording pen based on dynamic characteristic mapping include the following steps:

[0044] Step 1, providing a voice recorder, wherein the voice recorder includes a Bluetooth module, a processor and a storage medium;

[0045] Step 2, the recording pen establishes a first Bluetooth connection with the headset through the Bluetooth module, and the recording pen communicates with the headset as an audio gateway device in the first Bluetooth connection;

[0046] Step 3, the voice recorder establishes a second Bluetooth connection with the mobile phone through the Bluetooth module, and the voice recorder communicates with the mobile phone as a Bluetooth hands-free device in the second Bluetooth connection;

[0047] Step 4, when the second Bluetooth connection is established, the voice recorder sends a feature query instruction to the mobile phone to obtain and store the Bluetooth feature information of the mobile phone, wherein the Bluetooth feature information includes but is not limited to the Bluetooth hands-free function and audio codec capability supported by the mobile phone;

[0048] Step 5, during the process of establishing the first Bluetooth connection, the voice recorder maps the Bluetooth characteristic information to the audio gateway device characteristics of the voice recorder, and sends the mapped Bluetooth characteristic information to the headset, so that the headset can communicate with the voice recorder based on the Bluetooth characteristic information of the mobile phone;

[0049] Step 6, the voice recorder transfers and records voice data between the second Bluetooth connection and the first Bluetooth connection, including:

[0050] forwarding the downlink voice data sent by the mobile phone to the headset via the first Bluetooth connection, and synchronously storing it in the storage medium;

[0051] The uplink voice data sent by the headset is forwarded to the mobile phone through the second Bluetooth connection and synchronously stored in the storage medium.

[0052] As a further solution of the present invention, the Bluetooth characteristic information mapping in step 5 includes the following steps:

[0053] After the second Bluetooth connection is established, the voice recorder loads the Bluetooth characteristic information returned by the mobile phone into the processor;

[0054] When establishing the first Bluetooth connection, setting the loaded Bluetooth characteristic information as the audio gateway device characteristic of the voice recorder;

[0055] The voice recorder sends the Bluetooth characteristic information to the headset through the first Bluetooth connection, so that the headset can communicate with the voice recorder based on the received Bluetooth characteristic information.

[0056] As a further solution of the present invention, the voice recorder adopts the following connection sequence in the process of establishing the second Bluetooth connection and the first Bluetooth connection with the mobile phone and the headset respectively: first, establish the second Bluetooth connection with the mobile phone; after completing the query and storage of the Bluetooth characteristic information, start the process of establishing the first Bluetooth connection; after the first Bluetooth connection is established, start the transfer and recording functions of the voice data.

[0057] As a further solution of the present invention, the voice recorder supports the following storage methods of recording data during the recording process: storing the recording data in the storage medium; sending the recording data to a remote cloud storage server in real time via wireless transmission; and outputting the recording data to an external device via a wired interface.

[0058] As a further solution of the present invention, the voice recorder has an automatic reconnection function when restarted, including: automatically and preferentially connecting to the mobile phone device that was successfully connected most recently; after establishing a second Bluetooth connection with the mobile phone device, automatically scanning and connecting to the headphone device that was successfully connected most recently.

[0059] As a further solution of the present invention, the voice recorder supports a dual-chip architecture, including: the first chip is used to realize the role of a Bluetooth hands-free device and establish a second Bluetooth connection with a mobile phone; the second chip is used to realize the role of an audio gateway device and establish a first Bluetooth connection with a headset; the first chip and the second chip transmit voice data and interact with commands through a wired communication interface.

[0060] As a further solution of the present invention, the voice recorder has the function of synchronously processing uplink and downlink voice data when forwarding voice data, including: synchronously forwarding uplink voice data sent by the headset to the mobile phone, and storing it in the storage medium; synchronously forwarding downlink voice data sent by the mobile phone to the headset, and storing it in the storage medium; during the storage process, adding timestamps to the uplink and downlink voice data to ensure the time synchronization of the recorded data.

[0061] A voice recorder comprises: a Bluetooth module for establishing Bluetooth connections with a mobile phone and a headset respectively; a processor for managing Bluetooth connections, forwarding voice data and performing Bluetooth feature mapping; a storage medium for storing uplink and downlink voice data and Bluetooth feature information; and a communication interface for performing data interaction under a dual-chip architecture or outputting recording data to an external device.

[0062] Embodiment 1:

[0063] In actual applications, a user needs to record the entire business call for subsequent business records and contract confirmation. However, the user's mobile phone does not have a two-way recording function, and the existing Bluetooth headset does not support phone recording. This situation places a high demand on fully recording the call content. In addition, the user hopes that the recording process can be as automated as possible without additional operations, so as to avoid missing important information due to manually turning on the recording function during the call.

[0064] In order to solve the above problem, the user used a Bluetooth phone recording pen designed based on the technical solution of the present invention. The specific usage and working principle are as follows:

[0065] When the user uses the voice recorder for the first time, the voice recorder searches and establishes a second Bluetooth connection with the user's mobile phone through the Bluetooth module. During this connection process, the voice recorder acts as a hands-free device (HFP role) and sends a Bluetooth feature query command to the mobile phone to obtain feature information such as the Bluetooth hands-free function and codec capabilities supported by the mobile phone, and stores this information in the storage medium of the voice recorder. After the voice recorder is started, it has an automatic reconnection function, which can be connected to the user's mobile phone first in subsequent use without the user having to repeat the setting. After the mobile phone is successfully connected, the voice recorder activates the audio gateway device function (AG role) and starts searching for and connecting the user's commonly used Bluetooth headset. After the connection is established, the headset indirectly obtains the Bluetooth feature information of the mobile phone through the voice recorder, thereby realizing seamless communication between the headset and the mobile phone. The voice recorder uses its dual-role design to bridge the communication between the mobile phone and the headset, ensuring that the user does not need to be aware of the existence of the voice recorder, and the operation experience is natural and smooth.

[0066] When the user receives a call, the recorder automatically detects the incoming call AT command sent by the mobile phone and automatically activates the recording function. During the call, the recorder forwards the downlink voice data sent by the mobile phone to the headset in real time, and forwards the uplink voice data sent by the headset to the mobile phone at the same time. In this process, the recorder records the uplink and downlink voice data synchronously and adds a timestamp to each voice data segment in the storage medium to ensure that the time sequence of the recorded content is consistent and the voice data is complete. During the recording process, the recorder supports multiple storage and output methods. For call records that need to be preserved for a long time, the recorder stores the voice data in a high-fidelity format in the built-in storage medium, which is convenient for users to extract and manage later. At the same time, the recorder supports uploading the recorded data to the cloud storage service in real time via the wireless network for remote access and backup. In addition, the recorder can also transfer the recorded data to a computer or other external device through an interface (such as a USB interface) for further editing or analysis. Users can choose the appropriate recording storage and output method according to their specific needs. The Bluetooth phone recorder uses dynamic feature mapping technology to obtain Bluetooth feature information from the mobile phone and map it to the audio gateway feature of the recorder, so that the headset can obtain matching communication capabilities as if it is directly connected to the mobile phone. This design not only solves the problem of insufficient device compatibility in the existing technology, but also significantly improves communication efficiency and ensures the stability and reliability of the recording process. In addition, the voice recorder's uplink and downlink voice data synchronous storage function overcomes the defect of the existing mobile phone recording function that can only record one-way voice, providing users with complete and accurate call records, especially in scenarios such as legal evidence collection and business negotiations.

[0067] For example, in a legal evidence collection scenario, a user uses the voice recorder of the present invention to record the complete content of an important phone call, including every sentence spoken by both parties and the corresponding time sequence. Since the voice recorder synchronously records the uplink and downlink voice data and adds a timestamp to each recording, the call recording has a high legal effect. Also, in scenarios such as business negotiations, users use voice recorders to record in real time and wirelessly transmit the data to the cloud to ensure that business content is backed up immediately and avoid the loss of important information due to equipment failure or data loss. Through the above-mentioned implementation mode, the present invention effectively solves the problems of incomplete recording content, insufficient equipment compatibility, and single recording storage method raised in the background technology, thereby significantly improving the user experience.

[0068] Embodiment 2:

[0069] This embodiment demonstrates the application scenario of the Bluetooth telephone voice recorder of the present invention in a multi-person remote conference, aiming to solve the complexity and integrity problems of voice content recording in a remote conference, and further demonstrates the significant advantages of the present invention in efficient voice synchronous recording and real-time processing.

[0070] For example, in a company's multinational remote conference, the speaker uses a Bluetooth headset for voice output, and the participants dial into the conference system through their mobile phones to complete voice input. In order to ensure that the voice content of every speaker in the meeting can be fully recorded, the host chooses to use a Bluetooth phone recorder designed based on the technical solution of the present invention as the conference recording device.

[0071] Before the meeting starts, the host turns on the voice recorder device, and the voice recorder automatically searches for and connects to the host's mobile phone. Through the Bluetooth module, the voice recorder establishes a second Bluetooth connection with the mobile phone, and as a hands-free device (HFP role), obtains the Bluetooth feature information supported by the mobile phone, including the codec capabilities and audio path characteristics required by the conference system. Subsequently, the voice recorder turns on the audio gateway device (AG role), searches for and connects to the host's Bluetooth headset. During the connection process, the voice recorder maps the Bluetooth feature information obtained from the mobile phone to its own audio gateway characteristics, and passes it to the headset, allowing the headset to seamlessly connect to the conference system. This connection configuration ensures the communication compatibility between the headset and the mobile phone, while avoiding the complex operations of traditional recording devices in multi-device pairing.

[0072] After the meeting officially begins, the voice recorder simultaneously performs the following tasks: (1) receiving voice data (downlink data) from other participants in the remote conference system from the mobile phone, and forwarding the voice content to the host's headphones in real time via Bluetooth connection; (2) capturing the voice content (uplink data) transmitted by the host to the mobile phone through the headphones, and sending it to the remote conference system. During the above two-way data transmission process, the voice recorder uses the processor to achieve synchronous recording of uplink and downlink voice data, and adds a timestamp to each voice data segment to ensure that the recording results of the conference content have a high degree of temporal consistency.

[0073] During the recording process, the voice recorder supports a variety of recording storage and management methods: the entire meeting voice content is stored in real time to the local storage medium of the voice recorder for download and archiving after the meeting; at the same time, the voice recorder uploads the recording content to the enterprise cloud storage in real time via the wireless network, making it convenient for remote participants to access and view meeting records in real time; if quick follow-up processing is required, the host can import the voice data in the voice recorder into the computer through the USB interface, and directly use it to edit or generate text records.

[0074] Through dynamic feature mapping technology and dual-role switching design, this embodiment enables the voice recorder to be compatible with most mobile phones and headphone devices on the market without the need for complicated equipment debugging. The common problems of unstable connection or voice data loss in traditional recording solutions are effectively avoided in the present invention; and the voice recorder's synchronous recording function for uplink and downlink voice data provides complete two-way voice recording capabilities for meeting records, ensuring a high degree of restoration of meeting content. This function is of great significance to the review, archiving and subsequent organization of meeting content; and, through a variety of storage methods, the voice recorder not only meets the host's needs for local management of recording data, but also provides technical support for instant backup and distribution of remote meeting records, significantly improving the collaborative efficiency of meetings.

[0075] For example, in legal consulting services, the lawyer team provides real-time consulting opinions to clients through remote conferences, and records the meeting content through the voice recorder of the present invention. The timestamp function of the voice recorder ensures the authority of the recorded content in terms of legal effect. In corporate training scenarios, the voice recorder synchronously records the two-way voice interaction between the trainer and the trainee, and uploads the recorded content to the corporate training management system, providing employees with audio resources that can be reviewed at any time.

[0076] Example 3: Figure 1As shown, the system structure of the Bluetooth voice recorder based on the technical solution of the present invention is shown, as well as the process of the voice recorder transmitting Bluetooth characteristic information between the mobile phone and the headset through the dynamic characteristic mapping technology. In this figure, the voice recorder is connected to the mobile phone and the headset through the Bluetooth module. When the voice recorder establishes a second Bluetooth connection with the mobile phone, it communicates with the mobile phone as a Bluetooth hands-free device (HFP role); at the same time, it establishes a first Bluetooth connection with the headset and performs data transfer as an audio gateway device (AG role). Figure 2 , then describes the process of Bluetooth feature mapping. After the second Bluetooth connection is established, the voice recorder obtains Bluetooth feature information from the mobile phone and stores it in the internal storage medium. Then, when the voice recorder establishes the first Bluetooth connection with the headset, it maps the obtained Bluetooth feature information to its own audio gateway device characteristics and passes it to the headset through the first Bluetooth connection. This process ensures that the headset can communicate smoothly with the mobile phone, thereby achieving a seamless Bluetooth connection.

[0077] Figure 3 The synchronous forwarding process of uplink and downlink voice data is shown. In the figure, the voice recorder receives uplink voice data from the headset through dual Bluetooth connections at the same time, and forwards it to the mobile phone through the second Bluetooth connection; at the same time, the voice recorder receives downlink voice data from the mobile phone and forwards it to the headset through the first Bluetooth connection. This figure clearly shows how to synchronously forward and store uplink and downlink voice data to ensure the integrity and time synchronization of the recorded content. Figure 4 The figure shows the sequence of connecting the voice recorder to the mobile phone and the headset. First, the voice recorder establishes a second Bluetooth connection with the mobile phone to obtain the Bluetooth feature information of the mobile phone; then, the voice recorder establishes a first Bluetooth connection with the headset and maps the Bluetooth feature information to the headset to ensure seamless connection between the headset and the mobile phone. The figure clearly shows the connection sequence and the process of obtaining and mapping Bluetooth features, avoiding the connection confusion problem in traditional technologies. Figure 5 The figure shows the various recording storage and output methods supported by the voice recorder. The figure shows the different ways in which the voice recorder can store voice data in local storage media, upload it to the remote cloud in real time, or transmit it to an external device through an interface during the recording process. These functions enable the voice recorder to adapt to the needs of different users and provide flexible storage and data management solutions. Figure 6 The dual-chip architecture design used in the voice recorder is demonstrated. In this architecture, the first chip is responsible for connecting to the Bluetooth hands-free device of the mobile phone (HFP role), and the second chip is responsible for connecting to the audio gateway device of the headset (AG role). The two chips exchange data and transmit instructions through a wired communication interface. This architecture design improves the processing power of the voice recorder, enabling it to forward and record uplink and downlink data at the same time, thereby improving overall performance and stability.

[0078] In the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "connection", "fixation", "screw-on" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A Bluetooth recording method based on dynamic characteristic mapping, characterized in that: The following steps are involved: Step 1, providing a voice recorder, wherein the voice recorder includes a Bluetooth module, a processor and a storage medium; Step 2, the recording pen establishes a first Bluetooth connection with the headset through the Bluetooth module, and the recording pen communicates with the headset as an audio gateway device in the first Bluetooth connection; Step 3, the voice recorder establishes a second Bluetooth connection with the mobile phone through the Bluetooth module, and the voice recorder communicates with the mobile phone as a Bluetooth hands-free device in the second Bluetooth connection; Step 4, when the second Bluetooth connection is established, the voice recorder sends a feature query instruction to the mobile phone to obtain and store the Bluetooth feature information of the mobile phone, wherein the Bluetooth feature information includes but is not limited to the Bluetooth hands-free function and audio codec capability supported by the mobile phone; Step 5, during the process of establishing the first Bluetooth connection, the voice recorder maps the Bluetooth characteristic information to the audio gateway device characteristics of the voice recorder, and sends the mapped Bluetooth characteristic information to the headset, so that the headset can communicate with the voice recorder based on the Bluetooth characteristic information of the mobile phone; Step 6, the voice recorder transfers and records voice data between the second Bluetooth connection and the first Bluetooth connection, including: forwarding the downlink voice data sent by the mobile phone to the headset via the first Bluetooth connection, and synchronously storing it in the storage medium; Forwarding the uplink voice data sent by the headset to the mobile phone through the second Bluetooth connection, and synchronously storing it in the storage medium; the Bluetooth characteristic information mapping in step 5 includes the following steps: After the second Bluetooth connection is established, the voice recorder loads the Bluetooth characteristic information returned by the mobile phone into the processor; When establishing the first Bluetooth connection, setting the loaded Bluetooth characteristic information as the audio gateway device characteristic of the voice recorder; The voice recorder sends the Bluetooth characteristic information to the headset through the first Bluetooth connection, so that the headset can communicate with the voice recorder based on the received Bluetooth characteristic information; in the process of establishing the second Bluetooth connection and the first Bluetooth connection with the mobile phone and the headset respectively, the voice recorder adopts the following connection sequence: first, establish the second Bluetooth connection with the mobile phone; after completing the query and storage of the Bluetooth characteristic information, start the process of establishing the first Bluetooth connection; after the first Bluetooth connection is established, start the transfer and recording functions of the voice data.

2. A Bluetooth recording method based on dynamic characteristic mapping according to claim 1, characterized in that: The voice recorder supports the following storage methods for recording data during the recording process: storing the recording data in the storage medium; sending the recording data to a remote cloud storage server in real time via wireless transmission; and outputting the recording data to an external device via a wired interface.

3. A Bluetooth recording method based on dynamic characteristic mapping according to claim 1, characterized in that: The voice recorder has an automatic reconnection function when restarted, including: automatically and preferentially connecting to the mobile phone device that was successfully connected most recently; after establishing a second Bluetooth connection with the mobile phone device, automatically scanning and connecting to the headphone device that was successfully connected most recently.

4. The Bluetooth recording method based on dynamic characteristic mapping according to claim 1, characterized in that: The voice recorder supports a dual-chip architecture, including: a first chip is used to implement the role of a Bluetooth hands-free device and establish a second Bluetooth connection with a mobile phone; a second chip is used to implement the role of an audio gateway device and establish a first Bluetooth connection with a headset; the first chip and the second chip transmit voice data and interact with commands through a wired communication interface.

5. The Bluetooth recording method based on dynamic characteristic mapping according to claim 1, characterized in that: When forwarding voice data, the voice recorder has the function of synchronously processing uplink and downlink voice data, including: synchronously forwarding uplink voice data sent by the headset to the mobile phone, and storing it in the storage medium; synchronously forwarding downlink voice data sent by the mobile phone to the headset, and storing it in the storage medium; during the storage process, adding timestamps to the uplink and downlink voice data to ensure the time synchronization of the recorded data.

6. A recording pen, characterized in that: The voice recorder includes: a Bluetooth module, used to establish Bluetooth connections with a mobile phone and a headset respectively; a processor, used to manage Bluetooth connections, forward voice data and perform Bluetooth feature mapping; a storage medium, used to store uplink and downlink voice data and Bluetooth feature information; a communication interface, used to perform data interaction under a dual-chip architecture, or output recording data to an external device; the voice recorder achieves the above functions by executing any one of the methods in claims 1 to 5.

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