TWI733094B - Multi-member bluetooth device capable of avoiding signal interrupt - Google Patents

Abstract

A multi-member Bluetooth device includes: a main Bluetooth circuit capable of bidirectionally communicating with a remote Bluetooth device through a first Bluetooth communication circuit; and an auxiliary Bluetooth circuit capable of communicating with the main Bluetooth circuit through a data transmission circuit. While the main Bluetooth circuit utilizes the first Bluetooth communication circuit to communicate with the remote Bluetooth device, the auxiliary Bluetooth circuit utilizes a second Bluetooth communication circuit to sniff packets transmitted from the remote Bluetooth device. When detected that the auxiliary Bluetooth circuit has missed packets transmitted from the remote Bluetooth device, the main Bluetooth circuit transmits the missed packets to the auxiliary Bluetooth circuit through the data transmission circuit.

Description

Multi-member Bluetooth device capable of avoiding signal interruption

The invention relates to a Bluetooth device, in particular to a multi-member Bluetooth device that can avoid signal interruption.

A multi-member Bluetooth device refers to a Bluetooth device composed of multiple Bluetooth circuits that are used in conjunction with each other, such as a pair of Bluetooth headsets, a group of Bluetooth speakers, and so on. When a multi-member Bluetooth device is connected to another Bluetooth device (hereinafter referred to as a remote Bluetooth device), the remote Bluetooth device treats the multi-member Bluetooth device as a single Bluetooth device. The traditional multi-member Bluetooth device will designate one of the member circuits as a signal relay circuit when operating, as a data communication bridge between the remote Bluetooth device and other member circuits.

During operation, the computational load of the signal relay circuit is higher than that of other member circuits, so the power consumption and heat generation of the signal relay circuit is usually higher than that of other member circuits. When the signal relay circuit cannot continue to serve as a data communication bridge between the remote Bluetooth device and other member circuits due to insufficient power or other reasons, the traditional multi-member Bluetooth device will assign another member circuit as the new one Signal relay circuit, and the new signal relay circuit re-establishes a new Bluetooth connection with the remote Bluetooth device. After the new signal relay circuit establishes a new Bluetooth connection with the remote Bluetooth device, all member circuits in the multi-member Bluetooth device will be restored to the remote Bluetooth device through the new signal relay circuit. Data communication.

However, before the new Bluetooth connection between the new signal relay circuit and the remote Bluetooth device is established, other member circuits may be temporarily unable to communicate with the remote Bluetooth device, and the signal may be interrupted. . For example, in the application scenario of Bluetooth headsets, it is very likely that audio interruption occurs in one of the headsets at this time. Causes a bad user experience.

In view of this, how to reduce or avoid signal interruption of multi-member Bluetooth devices is a problem to be solved.

This specification provides an embodiment of a multi-member Bluetooth device for data transmission with a remote Bluetooth device. The multi-member Bluetooth device includes: a main Bluetooth circuit, including: a first Bluetooth communication circuit; a first data transmission circuit; and a first control circuit configured to be able to perform Bluetooth wireless transmission through the first Bluetooth communication circuit Perform two-way packet transmission with the remote Bluetooth device, and can perform data communication with other devices through the first data transmission circuit; and a pair of Bluetooth circuits including: a second Bluetooth communication circuit; a second data transmission circuit; and A second control circuit is configured to control the second data transmission circuit to perform data communication with the first data transmission circuit; wherein, in the process of packet transmission between the first Bluetooth communication circuit and the remote Bluetooth device, the second data transmission circuit The second control circuit will use the second Bluetooth communication circuit to record the packet sent by the remote Bluetooth device; and the first control circuit is also configured to check that the secondary Bluetooth circuit missed the packet sent by the remote Bluetooth device. In this case, the packet missed by the secondary Bluetooth circuit is transmitted to the second data transmission circuit through the first data transmission circuit.

One of the advantages of the above embodiment is that the secondary Bluetooth circuit will record the packets sent by the remote Bluetooth device, so the primary Bluetooth circuit only needs to transmit the packets missed by the secondary Bluetooth circuit to the secondary Bluetooth circuit, without forwarding the remote Bluetooth device. All the packets sent out are sent to the secondary Bluetooth circuit, so it can greatly reduce the operating burden of the main Bluetooth circuit, save the power consumption of the main Bluetooth circuit, and effectively extend the working time and standby time of the main Bluetooth circuit.

Another advantage of the above embodiment is that it can greatly reduce the data transmission bandwidth requirement between the main Bluetooth circuit and the secondary Bluetooth circuit.

Other advantages of the present invention will be explained in more detail with the following description and drawings.

100: multi-member Bluetooth device

102: remote Bluetooth device

110, 120, 130: Bluetooth circuit (Bluetooth circuit)

111, 121: Bluetooth communication circuit

113, 123: data transmission circuit

115, 125: control circuit

117, 127: determining circuit (determining circuit)

202~222, 502~518, 602~610, 702~716: operation

FIG. 1 is a simplified functional block diagram of a multi-member Bluetooth device according to an embodiment of the present invention.

FIG. 2 is a simplified flowchart of the method for implementing seamless handover between different member circuits of a multi-member Bluetooth device according to the present invention.

3 and 4 are simplified schematic diagrams of operations of the multi-member Bluetooth device in FIG. 1 in different stages of operation.

FIG. 5 is a simplified flow chart of another operation method of the interaction between the multi-member Bluetooth device and the remote Bluetooth device of the present invention.

6 to 7 are simplified flowcharts of another method for seamless handover between different member circuits of a multi-member Bluetooth device according to the present invention.

The embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals indicate the same or similar elements or method flows.

FIG. 1 is a simplified functional block diagram of a multi-member Bluetooth device 100 according to an embodiment of the present invention. The multi-member Bluetooth device 100 is used for data transmission with a remote Bluetooth device 102, and includes a plurality of member circuits. For the convenience of description, only three member circuits are shown in the embodiment of FIG. 1, which are the first Bluetooth circuit 110, the second Bluetooth circuit 120, and the third Bluetooth circuit 130 respectively.

In this embodiment, all member circuits in the multi-member Bluetooth device 100 have similar main circuit architectures, but different additional circuit elements can be set in different member circuits, and the circuit structure of all member circuits is not limited. Exactly the same. For example, as shown in FIG. 1, the first Bluetooth circuit 110 includes a Bluetooth communication circuit 111, a data transmission circuit 113, a control circuit 115, and a judgment circuit 117. Similarly, the second Bluetooth circuit 120 includes a Bluetooth communication circuit 121, a data transmission circuit 123, a control circuit 125, and a judgment circuit 127.

The main circuit elements inside the Bluetooth circuit 130 are also similar to the aforementioned Bluetooth circuit 110 or 120, but for the sake of brevity, the internal circuit elements of the Bluetooth circuit 130 are not shown in FIG. 1.

In the first Bluetooth circuit 110, the Bluetooth communication circuit 111 can be used to communicate with other Bluetooth devices. Line data communication. The data transmission circuit 113 can be used for data communication with other member circuits.

The control circuit 115 is coupled to the Bluetooth communication circuit 111 and the data transmission circuit 113, and is configured to directly communicate with the remote Bluetooth device 102 through the Bluetooth communication circuit 111 in the Bluetooth wireless transmission mode, and can communicate with other members through the data transmission circuit 113 Circuit for data communication.

The judgment circuit 117 is coupled to the control circuit 115 and is configured to evaluate the computing load, remaining power, temperature, or operating environment of the first Bluetooth circuit 110, and can notify when the aforementioned operating parameters of the first Bluetooth circuit 110 reach predetermined conditions Control circuit 115.

In some embodiments, the judging circuit 117 is also coupled to the data transmission circuit 113, and receives the calculation load and remaining data from other member circuits (for example, the Bluetooth circuit 120 or 130 in FIG. 1) through the data transmission circuit 113. Power, temperature, or operating environment instructions.

In the second Bluetooth circuit 120, the Bluetooth communication circuit 121 can be used for data communication with other Bluetooth devices. The data transmission circuit 123 can be used for data communication with other member circuits.

The control circuit 125 is coupled to the Bluetooth communication circuit 121 and the data transmission circuit 123, and is configured to communicate data with other Bluetooth devices through Bluetooth wireless transmission through the Bluetooth communication circuit 121, and can communicate with other member circuits through the data transmission circuit 123 Communication.

The judging circuit 127 is coupled to the control circuit 125 and is configured to evaluate the computing load, remaining power, temperature, or operating environment of the second Bluetooth circuit 120, and can notify when the aforementioned operating parameters of the second Bluetooth circuit 120 reach predetermined conditions Control circuit 125.

In some embodiments, the judging circuit 127 is also coupled to the data transmission circuit 123, and receives the calculation load and remaining data from other member circuits (for example, the Bluetooth circuit 110 or 130 in FIG. 1) through the data transmission circuit 123. Power, temperature, or operating environment instructions.

In practice, the aforementioned Bluetooth communication circuits 111 and 121 can be implemented by suitable communication circuits that can support various versions of the Bluetooth communication protocol. The aforementioned data transmission circuits 113 and 123 can be implemented by various wired transmission circuits, wireless transmission circuits, or a hybrid circuit that integrates the aforementioned two transmission mechanisms at the same time. The aforementioned control circuits 115 and 125 can be implemented by various microprocessors or digital signal processing circuits with appropriate computing capabilities. The aforementioned judgment circuits 117 and 127 can be implemented by suitable circuits capable of sensing, collecting, recording, and comparing related operating parameters.

In some embodiments, the judgment circuit 117 or 127 may also be integrated into the control circuit 115 or 125. In addition, the aforementioned data transmission circuits 113 and 123 can also be integrated into the aforementioned Bluetooth communication circuits 111 and 121, or the aforementioned Bluetooth communication circuits 111 and 121 can be used to implement the functions of the data transmission circuits 113 and 123.

In other words, the aforementioned Bluetooth communication circuit 111 and the data transmission circuit 113 may be implemented by different circuits, or may be implemented by the same circuit. Similarly, the aforementioned Bluetooth communication circuit 121 and the data transmission circuit 123 may be implemented by different circuits, or may be implemented by the same circuit.

In application, different functional blocks in the aforementioned first Bluetooth circuit 110 can also be integrated into a single circuit chip. For example, all the functional blocks in the first Bluetooth circuit 110 can be integrated into a single Bluetooth controller IC. Similarly, all the functional blocks in the second Bluetooth circuit 120 can also be integrated into another single Bluetooth control chip.

As can be seen from the foregoing description, different member circuits in the multi-member Bluetooth device 100 can communicate with each other through various wired or wireless transmission mechanisms through their respective data transmission circuits to form various types of data networks or data links. When the multi-member Bluetooth device 100 communicates with the remote Bluetooth device 102, only one specific member circuit of the multiple member circuits of the multi-member Bluetooth device 100 is responsible for direct data communication with the remote Bluetooth device 102 at the same time. , Other member circuits will indirectly communicate with the remote Bluetooth device 102 through the specific member circuit. Therefore, the remote blue The dental device 102 treats the multi-member Bluetooth device 100 as a single Bluetooth device.

Hereinafter, the operation mode of the multi-member Bluetooth device 100 will be further described in conjunction with FIGS. 2 to 4. 2 is a simplified flowchart of the method for implementing seamless handover between different member circuits of the multi-member Bluetooth device 100 according to the present invention. 3 and 4 are schematic diagrams of simplified operations of the multi-member Bluetooth device 100 in different stages of operation.

In the flowchart of FIG. 2, the process located in the column of a specific device represents the process performed by the specific device. For example, the part marked in the "first Bluetooth circuit" field is the process performed by the first Bluetooth circuit 110; the part marked in the "second Bluetooth circuit" field is the process performed by the second Bluetooth circuit 120 The process performed; the part marked in the "third bluetooth circuit" column is the process performed by the third bluetooth circuit 130. The foregoing logic is also applicable to other subsequent flowcharts.

For convenience of description, it is assumed below that the member circuit that is preset in the multi-member Bluetooth device 100 to be responsible for Bluetooth communication with an external Bluetooth device is the first Bluetooth circuit 110.

In the process 202, the first Bluetooth circuit 110 directly communicates data with the remote Bluetooth device 102, as shown in FIG. 1. For example, the control circuit 115 can control the Bluetooth communication circuit 111 to establish a Bluetooth connection with the remote Bluetooth device 102 in the process 202, and directly perform two-way data communication with the remote Bluetooth device 102. For another example, the control circuit 115 may control the Bluetooth communication circuit 111 in the process 202 to send data to the remote Bluetooth device 102 in an advertising mode in one direction. For another example, the control circuit 115 can control the Bluetooth communication circuit 111 in the process 202 to unidirectionally receive data from the remote Bluetooth device 102 in an appropriate Bluetooth packet receiving mode.

In other words, the data communication between the first Bluetooth circuit 110 and the remote Bluetooth device 102 may be bidirectional or unidirectional.

In the process 204, the first Bluetooth circuit 110 notifies other member circuits in the multi-member Bluetooth device 100, and the first Bluetooth circuit 110 is responsible for communicating with the remote Bluetooth device 102. That is, next, the first Bluetooth circuit 110 will act as a data communication bridge between the remote Bluetooth device 102 and other member circuits. In the process 204, the control circuit 115 can transmit the aforementioned notification information to the data transmission of other member circuits through the data transmission circuit 123 Circuit.

Next, when the second Bluetooth circuit 120 needs to receive data from the remote Bluetooth device 102 or needs to transmit data to the remote Bluetooth device 102, the second Bluetooth circuit 120 will perform the process 206. Similarly, when the third Bluetooth circuit 130 needs to receive data from the remote Bluetooth device 102 or needs to transmit data to the remote Bluetooth device 102, the third Bluetooth circuit 130 will perform the process 208.

In the process 206, the second Bluetooth circuit 120 indirectly communicates data with the remote Bluetooth device 102 through the first Bluetooth circuit 110. For example, the control circuit 125 in the second Bluetooth circuit 120 can transmit the data to be transmitted to the remote Bluetooth device 102 through the data transmission circuit 123 to the data transmission circuit 113 of the first Bluetooth circuit 110, and then the first Bluetooth circuit 110 transfers the data to the data transmission circuit 113 of the first Bluetooth circuit 110. The data is forwarded to the remote Bluetooth device 102. For another example, the control circuit 125 in the second Bluetooth circuit 120 can receive data from the remote Bluetooth device 102 through the first Bluetooth circuit 110.

In the process 208, the third Bluetooth circuit 130 indirectly communicates with the remote Bluetooth device 102 through the first Bluetooth circuit 110. For example, the third Bluetooth circuit 130 may transmit the data to be transmitted to the remote Bluetooth device 102 to the data transmission circuit 113 of the first Bluetooth circuit 110, and then the first Bluetooth circuit 110 transmits the data to the remote Bluetooth device 102. For another example, the third Bluetooth circuit 130 can receive data from the remote Bluetooth device 102 through the first Bluetooth circuit 110.

In this way, when the multi-member Bluetooth device 100 is in operation, only the first Bluetooth circuit 110 will directly communicate with the remote Bluetooth device 102, and the other member circuits will indirectly communicate with the remote Bluetooth device 102 through the first Bluetooth circuit 110. Communication. In other words, the first Bluetooth circuit 110 will play the role of signal relay between other member circuits and the remote Bluetooth device 102 at this time.

In a battery-powered environment where all member circuits of the multi-member Bluetooth device 100 rely on battery-powered, the aforementioned mechanism can save the computation, power consumption, and heat generation of other member circuits.

During the operation of the multi-member Bluetooth device 100, the determining circuit 117 of the first Bluetooth circuit 110 will periodically or intermittently perform the process 210.

In the process 210, the determining circuit 117 evaluates the operational parameters of the first Bluetooth circuit 110 such as the computing load, remaining power, temperature, and/or operating environment, to determine whether the signal relay role played by the first Bluetooth circuit 110 needs to be handed over To other members of the circuit. If the determining circuit 117 determines that the current situation of the first Bluetooth circuit 110 has reached the preset condition that the signal relay role needs to be handed over to other member circuits, the first Bluetooth circuit 110 will proceed to the process 212; otherwise, the determining circuit 117 will continue the cycle The process 210 is repeated periodically or intermittently.

For example, the judging circuit 117 can perform when the computing load of the first Bluetooth circuit 110 exceeds a predetermined level, the remaining power of the first Bluetooth circuit 110 is lower than a predetermined level, the temperature of the first Bluetooth circuit 110 exceeds a predetermined temperature, and the first Bluetooth circuit 110 exceeds a predetermined temperature. When the operating environment of the Bluetooth circuit 110 deviates from the preset condition, it is determined that the signal relay role played by the first Bluetooth circuit 110 needs to be handed over to other member circuits. In some embodiments where the first Bluetooth circuit 110 is a Bluetooth headset, the preset condition of the operating environment of the first Bluetooth circuit 110 is that the first Bluetooth circuit 110 should operate in the ear canal of the user. In this case, the determining circuit 117 can determine that the operating environment of the first Bluetooth circuit 110 deviates from the preset condition when it senses that the position of the first Bluetooth circuit 110 is away from the user's ear.

For another example, the determining circuit 117 may determine that the signal relay role played by the first Bluetooth circuit 110 needs to be handed over to other member circuits when at least one of the foregoing conditions is established.

In another embodiment, the determining circuit 117 can also receive the calculation load, the remaining power, the temperature, or the calculation load from other member circuits (for example, the Bluetooth circuits 120 and 130 in FIG. 1) through the data transmission circuit 113 in the process 210. It is the indication information of the operating parameters such as the operating environment, and the difference between the operating parameters of the first Bluetooth circuit 110 and the operating parameters of other member circuits is compared in the process 210 to determine whether the first Bluetooth circuit 110 needs to be played The basis for transferring the role of signal relay to other member circuits. In this embodiment, its Other member circuits can use their own judgment circuits to evaluate their own operating parameters such as computing load, surplus power, temperature, and/or operating environment, and transmit the obtained operating parameters to the judgment circuit 117 of the first Bluetooth circuit 110 in the process 210. .

For example, the judging circuit 117 can perform the calculation load of the first Bluetooth circuit 110 over other member circuits by a predetermined degree, the remaining power of the first Bluetooth circuit 110 is lower than the remaining power of other member circuits by a predetermined degree, and the first Bluetooth circuit 110 When the temperature of the first Bluetooth circuit 110 exceeds the temperature of other member circuits by a predetermined degree, and the operating environment of the first Bluetooth circuit 110 deviates from the preset condition, but the operating environment of the other member circuits meets the preset condition, it is determined that the first Bluetooth circuit 110 needs to play a role. The signal relay role is handed over to other member circuits.

For another example, the determining circuit 117 may determine that the signal relay role played by the first Bluetooth circuit 110 needs to be handed over to other member circuits when at least one of the foregoing conditions is established.

In practice, the judging circuit 117 can also take the operating parameters of the first Bluetooth circuit 110 itself and the difference in operating parameters between the first Bluetooth circuit 110 and other member circuits into consideration in the comprehensive judgment of the aforementioned process 210.

For example, the judging circuit 117 can perform when the computing load of the first Bluetooth circuit 110 exceeds a predetermined level, the remaining power of the first Bluetooth circuit 110 is lower than a predetermined level, the temperature of the first Bluetooth circuit 110 exceeds a predetermined temperature value, and the first Bluetooth circuit 110 exceeds a predetermined temperature. The calculation load of the circuit 110 exceeds that of other member circuits by a predetermined degree, the remaining power of the first Bluetooth circuit 110 is lower than the remaining power of other member circuits by a predetermined degree, and the temperature of the first Bluetooth circuit 110 exceeds the temperature of other member circuits by a predetermined degree. When the operating environment of the first Bluetooth circuit 110 deviates from the preset condition but the operating environment of other member circuits meets the preset condition, it is determined that the signal relay role played by the first Bluetooth circuit 110 needs to be handed over to other member circuits.

Alternatively, the determining circuit 117 may also determine that the signal relay role played by the first Bluetooth circuit 110 needs to be handed over to other member circuits when at least a part of the foregoing conditions are established.

When the determining circuit 117 determines that the signal relay role played by the first Bluetooth circuit 110 needs to be handed over to other member circuits, the determining circuit 117 will notify the control circuit 115, and the control circuit 115 will perform the process 212.

In the process 212, the control circuit 115 may select a member circuit from the other member circuits of the multi-member Bluetooth device 100 to play the role of signal relay in the subsequent operation, and transfer the device of the first Bluetooth circuit 110 through the data transmission circuit 113 The identification data, the Bluetooth connection parameters between the first Bluetooth circuit 110 and the remote Bluetooth device 102, and a handover instruction are sent to the selected member circuit.

In practice, the control circuit 115 can select any member circuit from other member circuits of the multi-member Bluetooth device 100 to play the role of signal relay in subsequent operations.

Alternatively, the control circuit 115 can also select a member circuit with the most ideal operating parameters from other member circuits of the multi-member Bluetooth device 100 to play the role of signal relay in subsequent operations.

For example, the control circuit 115 can select the member circuit with the highest remaining power from the other member circuits of the multi-member Bluetooth device 100 to play the role of signal relay in the subsequent operation.

For another example, the control circuit 115 can select a member circuit with the lowest average computing load from other member circuits of the multi-member Bluetooth device 100 to play the role of signal relay in subsequent operations.

For another example, the control circuit 115 can select the member circuit with the lowest temperature from the other member circuits of the multi-member Bluetooth device 100 to play the role of signal relay in the subsequent operation.

For another example, the control circuit 115 may also set appropriate weights for multiple operating parameters of other member circuits, and select the member circuit with the highest weighted score of these operating parameters to play the role of signal relay in subsequent operations.

For the convenience of description, it is assumed below that the control circuit 115 selects the second Bluetooth circuit 120 in the aforementioned process 212 to play the role of signal relay in the subsequent operation.

Therefore, in the process 212, the control circuit 115 uses the data transmission circuit 113 and the data transmission circuit 123 to identify the device identification data of the first Bluetooth circuit 110 and the first Bluetooth circuit The Bluetooth connection parameters and handover instructions between 110 and the remote Bluetooth device 102 are transmitted to the second Bluetooth circuit 120, as shown in FIG. 3.

The aforementioned handover instruction is used to instruct the second bluetooth circuit 120 to use the device identification data and bluetooth connection parameters of the first bluetooth circuit 110, and to imitate the name of the first bluetooth circuit 110 to directly communicate with the remote bluetooth device 102. That is, instruct the second bluetooth circuit 120 to use the device identification data and bluetooth connection parameters of the first bluetooth circuit 110, instead of the first bluetooth circuit 110 to directly communicate with the remote bluetooth device 102 in the Bluetooth wireless transmission mode to connect Play the role of signal relay.

In practice, the device identification data of the first Bluetooth circuit 110 transmitted in the foregoing process 212 may follow the version of the Bluetooth communication protocol adopted between the multi-member Bluetooth device 100 and the remote Bluetooth device 102, or Bluetooth The communication mode is different.

For example, in one embodiment, the device identification data of the aforementioned first Bluetooth circuit 110 includes the sync word used by the first Bluetooth circuit 110, the Bluetooth address of the first Bluetooth circuit 110, and the first The logical transport address (LT_ADDR) of the Bluetooth circuit 110.

For another example, in another embodiment, the device identification data of the aforementioned first Bluetooth circuit 110 includes an access address of the first Bluetooth circuit 110.

For another example, in another embodiment, the device identification data of the aforementioned first Bluetooth circuit 110 includes the access address of the first Bluetooth circuit 110 and the advertising device address of the first Bluetooth circuit 110.

Similarly, the Bluetooth connection parameters transmitted in the aforementioned process 212 may be different according to the version of the Bluetooth communication protocol adopted between the multi-member Bluetooth device 100 and the remote Bluetooth device 102, or the Bluetooth communication mode. .

For example, in one embodiment, the Bluetooth connection parameters between the aforementioned first Bluetooth circuit 110 and the remote Bluetooth device 102 include piconet clock and adaptive frequency hopping map (adaptive frequency hopping map, AFH map).

For another example, in another embodiment, the aforementioned first Bluetooth circuit 110 and the remote Bluetooth device The Bluetooth connection parameters between 102 include piconet clock, adaptive frequency hopping mapping, link key, and encryption key.

For another example, in another embodiment, the Bluetooth connection parameters between the aforementioned first Bluetooth circuit 110 and the remote Bluetooth device 102 include advertising interval, channel map, and manufacturer’s self Vendor specific timing data.

For another example, in another embodiment, the Bluetooth connection parameters between the aforementioned first Bluetooth circuit 110 and the remote Bluetooth device 102 include anchor point instant, connection counter, and connection Connection interval, channel mapping, long term key, session key, initialization vector, encryption algorithm counter (CCM counter), and manufacturer's own Scheduled data.

In the process 214, the control circuit 125 of the second Bluetooth circuit 120 receives the aforementioned device identification data, Bluetooth connection parameters, and handover instructions from the first Bluetooth circuit 110 through the data transmission circuit 123.

In the process 216, the first Bluetooth circuit 110 or the second Bluetooth circuit 120 will notify other member circuits in the multi-member Bluetooth device 100, and the second Bluetooth circuit 120 will be responsible for communicating with the remote Bluetooth device 102 instead. That is, next, the second Bluetooth circuit 120 will act as a data communication bridge between the remote Bluetooth device 102 and other member circuits. In the process 216, the control circuit 115 or 125 may transmit the aforementioned notification information to the data transmission circuits of other member circuits through the corresponding data transmission circuit.

In the process 218, the control circuit 125 of the second Bluetooth circuit 120 controls the Bluetooth communication circuit 121 to use the device identification data and Bluetooth connection parameters of the first Bluetooth circuit 110 to directly communicate with the remote Bluetooth device under the name of the first Bluetooth circuit 110 102 performs data communication, as shown in FIG. 4. Please note that the aforementioned so-called pretending to be the name of the first Bluetooth circuit 110 means that when the second Bluetooth circuit 120 directly communicates with the remote Bluetooth device 102 in Bluetooth, it will deliberately use the device identification data of the first Bluetooth circuit 110 as the second Device identification of Bluetooth circuit 120 Therefore, the remote Bluetooth device 102 mistakenly believes that it is still performing Bluetooth communication with the first Bluetooth circuit 110.

On the other hand, when the Bluetooth communication circuit 121 of the second Bluetooth circuit 120 directly communicates with the remote Bluetooth device 102 in the name of the first Bluetooth circuit 110, the control circuit 115 of the first Bluetooth circuit 110 will control the Bluetooth communication circuit. 111 stops directly communicating data with the remote Bluetooth device 102 in the Bluetooth wireless transmission mode, so as to avoid causing conflicts in the reception of the remote Bluetooth device 102.

In other words, while the first Bluetooth circuit 110 uses the Bluetooth communication circuit 111 to directly communicate with the remote Bluetooth device 102, the Bluetooth communication circuit 121 of the second Bluetooth circuit 120 will not directly communicate with the remote Bluetooth device 102. During the period when the Bluetooth communication circuit 121 of the second Bluetooth circuit 120 directly communicates with the remote Bluetooth device 102, the Bluetooth communication circuit 111 of the first Bluetooth circuit 110 does not directly communicate with the remote Bluetooth device 102.

In addition, the Bluetooth communication circuit 121 uses the device identification data and a plurality of Bluetooth connection parameters to directly communicate with the remote Bluetooth device 102 in the Bluetooth wireless transmission mode, pretending to be the first Bluetooth circuit 110, and does not need to go through the remote first. The end Bluetooth device 102 agrees. Therefore, when the second Bluetooth circuit 120 starts to directly perform Bluetooth communication with the remote Bluetooth device 102, the remote Bluetooth device 102 will not be required to perform the Bluetooth connection procedure again.

In other words, the aforementioned second bluetooth circuit 120 uses the device identification data and bluetooth connection parameters of the first bluetooth circuit 110 to directly communicate with the remote bluetooth device 102 by bluetooth, which can save the need to re-establish bluetooth connection with the remote bluetooth device 102. The time required for the procedure. From another perspective, the aforementioned method can effectively avoid the signal interruption caused by the second Bluetooth circuit 120 needing to re-establish a Bluetooth connection process with the remote Bluetooth device 102 in its own name.

Next, when the first Bluetooth circuit 110 needs to receive data from the remote Bluetooth device 102 or needs to transmit data to the remote Bluetooth device 102, the first Bluetooth circuit 110 will perform Process 220. Similarly, when the third Bluetooth circuit 130 needs to receive data from the remote Bluetooth device 102 or needs to transmit data to the remote Bluetooth device 102, the third Bluetooth circuit 120 will perform the process 222.

In the process 220, the first Bluetooth circuit 110 will indirectly communicate with the remote Bluetooth device 102 through the second Bluetooth circuit 120. For example, the control circuit 115 in the first Bluetooth circuit 110 can transmit the data to be transmitted to the remote Bluetooth device 102 through the data transmission circuit 113 to the data transmission circuit 123 of the second Bluetooth circuit 120, and then the second Bluetooth circuit 120 transfers the data to the data transmission circuit 123 of the second Bluetooth circuit 120. The data is forwarded to the remote Bluetooth device 102. For another example, the control circuit 115 in the first Bluetooth circuit 110 can receive data from the remote Bluetooth device 102 through the second Bluetooth circuit 120.

In the process 222, the third Bluetooth circuit 130 indirectly communicates with the remote Bluetooth device 102 through the second Bluetooth circuit 120. For example, the third Bluetooth circuit 130 may transmit the data to be transmitted to the remote Bluetooth device 102 to the data transmission circuit 123 of the second Bluetooth circuit 120, and then the second Bluetooth circuit 120 transmits the data to the remote Bluetooth device 102. For another example, the third Bluetooth circuit 130 can receive data from the remote Bluetooth device 102 through the second Bluetooth circuit 120.

In this way, in the subsequent operation of the multi-member Bluetooth device 100, only the second Bluetooth circuit 120 will directly communicate with the remote Bluetooth device 102, and the other member circuits will change to indirectly communicate with the remote through the second Bluetooth circuit 120. The Bluetooth device 102 performs data communication. In other words, at this time, the second Bluetooth circuit 120 will replace the first Bluetooth circuit 110 to play the role of signal relay between other member circuits and the remote Bluetooth device 102.

Please note that the execution sequence of the process in FIG. 2 is only an exemplary embodiment, and does not limit the actual implementation of the present invention. For example, the foregoing action of transmitting the device identification data of the first Bluetooth circuit 110, the Bluetooth connection parameters between the first Bluetooth circuit 110 and the remote Bluetooth device 102, and the handover instruction to the second Bluetooth circuit 120 is performed in the process 212 It can be carried out at the same time, but it can also be carried out at different time points in practical applications.

In some embodiments or applications, the aforementioned first Bluetooth circuit 110 acts as a signal relay angle. In the coloring process, in order to achieve a specific application purpose, the judgment operation of the aforementioned process 210 can also be skipped and the operation of the process 212 is directly performed. For example, the control circuit 115 can actively request a certain operation mode of the other member circuits when the first Bluetooth circuit 110 is to enter a certain specific operation mode (for example, enter the power saving mode, enter the firmware automatic update mode, or prepare to restart). A member circuit (for example, the aforementioned second bluetooth circuit 120) replaces the first bluetooth circuit 110 to directly communicate with the remote bluetooth device 102 in order to continue to play the role of signal relay, and is not limited to the judgment of the judgment circuit 117 at that time result. In this case, it is equivalent to the first Bluetooth circuit 110 skipping the aforementioned process 210 and directly performing the operation of the process 212.

In addition, the number of member circuits in the aforementioned multi-member Bluetooth device 100 can be reduced to two, or can be increased according to actual circuit application requirements.

The structure and operation of the aforementioned multi-member Bluetooth device 100 can be applied to a pair of Bluetooth headsets, a group of Bluetooth speakers, a group of virtual reality devices, a group of Bluetooth tire pressure detectors, and multiple Internet of Things. Unit circuit IoT systems and other devices or systems that use Bluetooth transmission mechanisms. The aforementioned remote Bluetooth device 102 can be used with various desktop computers, notebook computers, tablet computers, mobile phones, smart watches, virtual reality image signal generating devices, smart speakers, smart TVs, and cars with Bluetooth transmission capabilities. Use electronic equipment, Internet of Things transmission and reception circuits and other appropriate devices to achieve.

It can be seen from the foregoing description that the first Bluetooth circuit 110 will first play the role of a signal relay in the multi-member Bluetooth device 100, directly communicate with the remote Bluetooth device 102, and act as a link between the remote Bluetooth device 102 and other member circuits. Data communication bridge. After the first Bluetooth circuit 110 plays the role of signal relay for a period of time, the control circuit 115 of the first Bluetooth circuit 110 will instruct the second Bluetooth circuit 120 to continue to play the role of signal relay, and use the device identification data of the first Bluetooth circuit 110 The Bluetooth connection parameters, pretending to be the first Bluetooth circuit 110, replace the first Bluetooth circuit 110 to directly perform Bluetooth communication with the remote Bluetooth device 102, so as to serve as a data communication bridge between the remote Bluetooth device 102 and other member circuits.

The foregoing method of transferring the signal relay role by the first Bluetooth circuit 110 to the second Bluetooth circuit 120 can effectively reduce the amount of calculation, power consumption, or heat generation of the first Bluetooth circuit 110.

In addition, using the aforementioned method of directly communicating data with the remote Bluetooth device 102 in the name of the first Bluetooth circuit 110, the second Bluetooth circuit 120 does not need to re-establish a new Bluetooth connection with the remote Bluetooth device 102, so it can effectively avoid A signal interruption occurs in a member circuit in the multi-member Bluetooth device 100.

In other words, using the method of FIG. 2 described above, the first Bluetooth circuit 110 can seamlessly transfer the signal relay role to the second Bluetooth circuit 120 without first obtaining the consent of the remote Bluetooth device 102.

From another perspective, the member circuit of the aforementioned multi-member Bluetooth device 100 that plays the role of signal relay (hereinafter referred to as the main Bluetooth circuit) can select the next member circuit that plays the role of signal relay when appropriate. (Hereinafter referred to as the secondary Bluetooth circuit), and flexibly determines the timing when the secondary Bluetooth circuit replaces the main Bluetooth circuit and directly communicates with the remote Bluetooth device 102.

Therefore, by using the method of FIG. 2 described above, management mechanisms such as load balance, power consumption balance, or heat balance among the multiple Bluetooth circuits of the multi-member Bluetooth device 100 can be implemented, so that the overall performance of the multi-member Bluetooth device 100 can be improved. , Extend the service life of the Bluetooth circuit, or improve the user experience.

In the aforementioned embodiments of FIGS. 2 to 4, the main Bluetooth circuit, which plays the role of the current signal relay, performs two-way packet transmission with the remote Bluetooth device 102, and other member circuits indirectly receive the remote Bluetooth device through the main Bluetooth circuit. 102, and the main Bluetooth circuit will determine whether to use the main Bluetooth circuit based on its own computing load, remaining power, temperature, operating environment and other operating parameters, and/or the operating parameter gap between the main Bluetooth circuit and other member circuits The signal relay role played is handed over to other member circuits. However, this is only one of the ways in which the multi-member Bluetooth device 100 in FIG. 1 interacts with the remote Bluetooth device 102, and does not limit the actual operation of the multi-member Bluetooth device 100.

The following will further illustrate another operation of the multi-member Bluetooth device 100 in conjunction with FIGS. 5-7. Way of doing it. FIG. 5 is a simplified flowchart of another operation method of the interaction between the multi-member Bluetooth device 100 and the remote Bluetooth device 102 in FIG. 1. 6 to 7 are simplified flowcharts of another method for seamless handover between different member circuits of the multi-member Bluetooth device 100.

In this embodiment, one of the member circuits of the multi-member Bluetooth device 100 (also referred to as the main Bluetooth circuit hereinafter) is responsible for bidirectional packet transmission with the remote Bluetooth device 102. During the two-way packet transmission between the main Bluetooth circuit and the remote Bluetooth device 102, other member circuits will sniff the packets sent by the remote Bluetooth device 102, but other member circuits are not allowed to transmit commands, data, or other related information. The packet is sent to the remote Bluetooth device 102. In other words, all member circuits of the multi-member Bluetooth device 100 in this embodiment will receive packets sent by the remote Bluetooth device 102, but only the main Bluetooth circuit is allowed to send commands, data, or other related packets to the remote Bluetooth device 102.

For the convenience of description, the following assumes that the member circuit that is preset in the multi-member Bluetooth device 100 to be responsible for two-way packet transmission with the remote Bluetooth device 102 is the first Bluetooth circuit 110.

As shown in FIG. 5, the multi-member Bluetooth device 100 will first perform the process 502 to obtain the Bluetooth connection parameters required for receiving the packet sent by the remote Bluetooth device 102. In practice, the multi-member Bluetooth device 100 can use one of the member circuits to first connect with the remote Bluetooth device 102 to obtain related Bluetooth connection parameters, and then use the member circuit to transmit the acquired Bluetooth connection parameters to other member circuits. .

For example, in one embodiment, the control circuit 115 of the first Bluetooth circuit 110 can control the Bluetooth communication circuit 111 to establish a Bluetooth connection with the remote Bluetooth device 102 in the process 502, and connect the first Bluetooth circuit 110 to the remote Bluetooth device. The Bluetooth connection parameters between 102 are transmitted to other member circuits such as the second Bluetooth circuit 120 through the data transmission circuit 113, so that other member circuits can use the Bluetooth connection parameters to receive packets from the remote Bluetooth device 102.

For another example, in another embodiment, the control circuit 125 of the second Bluetooth circuit 120 may be In the process 502, the Bluetooth communication circuit 121 is controlled to establish a Bluetooth connection with the remote Bluetooth device 102, and the Bluetooth connection parameters between the second Bluetooth circuit 120 and the remote Bluetooth device 102 are transmitted to other member circuits through the data transmission circuit 123 , So that other member circuits can use the Bluetooth connection parameters to receive the packet sent by the remote Bluetooth device 102. On the other hand, the control circuit 125 can also transmit the device identification data of the second Bluetooth circuit 120 and the Bluetooth connection parameters between the second Bluetooth circuit 120 and the remote Bluetooth device 102 through the data transmission circuit 123 in the process 502 Give the first Bluetooth circuit 110 so that the first Bluetooth circuit 110 can perform two-way packet transmission with the remote Bluetooth device 102 in the subsequent process 506. After that, the second Bluetooth circuit 120 will be changed to only receive the packets sent by the remote Bluetooth device 102 in one direction, and will not send the packets to the remote Bluetooth device 102, so as to avoid the problem of packet conflicts in the remote Bluetooth device 102.

In the process 504, the first Bluetooth circuit 110 will notify other member circuits in the multi-member Bluetooth device 100 (for example, the aforementioned second Bluetooth circuit 120 and the third Bluetooth circuit 130), and then the first Bluetooth circuit 110 will be responsible for communicating with each other. The remote Bluetooth device 102 performs two-way packet transmission. In the process 504, the first Bluetooth circuit 110 also instructs other member circuits to notify the first Bluetooth circuit 110 when they record (that is, receive) a packet sent by the remote Bluetooth device 102. That is, other member circuits can receive packets sent by the remote Bluetooth device 102 in one direction, but are not allowed to send commands, data, or other related packets to the remote Bluetooth device 102. The control circuit 115 can transmit the aforementioned notification information and instructions to the data transmission circuits of other member circuits through the data transmission circuit 123.

Next, when the remote Bluetooth device 102 needs to send various commands or data to the multi-member Bluetooth device 100, or the multi-member Bluetooth device 100 needs to send various commands or data to the remote Bluetooth device 102, the first Bluetooth circuit 110 will perform Process 506.

In the process 506, the control circuit 115 can use the Bluetooth connection parameters acquired in the process 502 to perform two-way packet transmission with the remote Bluetooth device 102 through the Bluetooth communication circuit 111 to receive various commands or commands from the remote Bluetooth device 102. Data, or send various commands or data to the remote Bluetooth device 102. From the operation description of the foregoing process 502, it can be seen that the first The Bluetooth connection parameters used by the Bluetooth circuit 110 and the remote Bluetooth device 102 for two-way packet transmission may be acquired by the first Bluetooth circuit 110 itself, or may be other member circuits (for example, the second Bluetooth circuit 120) Came.

If the Bluetooth connection parameters used by the first Bluetooth circuit 110 are acquired by the first Bluetooth circuit 110 itself, the first Bluetooth circuit 110 can use the first Bluetooth circuit 110 to perform two-way communication with the remote Bluetooth device 102 in the process 506. Packet transmission. If the Bluetooth connection parameters used by the first Bluetooth circuit 110 are transmitted from the second Bluetooth circuit 120, the first Bluetooth circuit 110 can use the name of the second Bluetooth circuit 120 to perform two-way packets with the remote Bluetooth device 102 in the process 506 transmission.

Every time the Bluetooth communication circuit 111 receives a packet from the remote Bluetooth device 102, the control circuit 115 of the first Bluetooth circuit 110 will proceed to the process 508 to transmit a confirmation message corresponding to the received packet through the Bluetooth communication circuit 111 ( acknowledge message) to the remote Bluetooth device 102. If the remote Bluetooth device 102 does not receive the corresponding confirmation information of the specific packet, it will retransmit the specific packet to the Bluetooth communication circuit 111. In practice, various suitable existing packet handshake mechanisms can be used between the first Bluetooth circuit 110 and the remote Bluetooth device 102 to reduce or avoid the occurrence of missing packets.

On the other hand, during the two-way packet transmission process between the first Bluetooth circuit 110 and the remote Bluetooth device 102, other member circuits will perform the process 510 to record the packets sent by the remote Bluetooth device 102.

For example, in the process 510, the control circuit 125 of the second Bluetooth circuit 120 may record the packet sent by the remote Bluetooth device 102 through the Bluetooth communication circuit 121 according to the Bluetooth connection parameters obtained in the process 502. In an embodiment, the Bluetooth communication circuit 121 may record all Bluetooth packets sent by the remote Bluetooth device 102. In another embodiment, the bluetooth communication circuit 121 only records the bluetooth packets that the remote bluetooth device 102 wants to transmit to the first bluetooth circuit 110, but does not record the remote bluetooth device 102 to transmit to the multi-member bluetooth device 100 Bluetooth packets of other devices. From the description of the foregoing process 502, it can be seen that the Bluetooth connection parameters used by the second Bluetooth circuit 120 to record packets sent by the remote Bluetooth device 102 are: It may be acquired by the second Bluetooth circuit 120 itself, or it may be transmitted from another member circuit (for example, the first Bluetooth circuit 110).

Each time other member circuits record (ie, receive) a packet sent by the remote Bluetooth device 102, the process 512 is performed. In the process 512, the member circuit sends a notification message corresponding to the received packet to the first Bluetooth circuit 110, but does not send any confirmation message to the remote Bluetooth device 102. For example, every time the second Bluetooth circuit 120 receives a packet sent by the remote Bluetooth device 102, the control circuit 125 may perform the process 512 to send a corresponding notification message to the data transmission circuit of the first Bluetooth circuit 110 through the data transmission circuit 123 113, but the control circuit 125 will not send any confirmation information to the remote Bluetooth device 102 through the Bluetooth communication circuit 121 and the data transmission circuit 123.

In other words, although the first Bluetooth circuit 110 and other member circuits will receive the packet sent by the remote Bluetooth device 102 in this embodiment, only the first Bluetooth circuit 110 will send the confirmation message to the remote Bluetooth device 102 when receiving the packet. , Other member circuits will not send confirmation information to the remote Bluetooth device 102 to avoid misjudgment by the remote Bluetooth device 102. Since the remote Bluetooth device 102 does not know that the second Bluetooth circuit 120 is recording the packet sent by the remote Bluetooth device 102, and the second Bluetooth circuit 120 does not send the corresponding confirmation information to the remote Bluetooth device 102, the second Bluetooth circuit Between 120 and the remote Bluetooth device 102, no packet handshaking procedure is performed for the packet sent by the remote Bluetooth device 102.

In this embodiment, the purpose of the second Bluetooth circuit 120 sending the aforementioned notification information to the first Bluetooth circuit 110 is not to perform a packet handshaking procedure with the first Bluetooth circuit 110, but to allow the first Bluetooth circuit 110 to be able to Grasp the result of recording the packet sent by the remote Bluetooth device 102 by the second Bluetooth circuit 120.

In addition, the purpose of the second Bluetooth circuit 120 sending the aforementioned notification information to the first Bluetooth circuit 110 is not for the first Bluetooth circuit 110 to decide whether to send the aforementioned confirmation information to the remote Bluetooth device 102 based on it. The first Bluetooth communication circuit 111 of this embodiment is transmitting Before the aforementioned confirmation message is sent to the remote Bluetooth device 102, it does not check whether the data transmission circuit 113 has received the aforementioned notification message from the second Bluetooth circuit 120. Therefore, the timing of the first Bluetooth communication circuit 111 sending the confirmation information to the remote Bluetooth device 102 is independent of whether the data transmission circuit 113 has received the aforementioned notification information from the second Bluetooth circuit 120.

For example, when the remote Bluetooth device 102 sends out a specific Bluetooth packet, if the first Bluetooth circuit 110 receives the specific Bluetooth packet, but the second Bluetooth circuit 120 does not record the specific Bluetooth packet, the first Bluetooth communication circuit 111 A corresponding confirmation message is still sent to the remote Bluetooth device 102 through the Bluetooth communication circuit 111. Conversely, if the second Bluetooth circuit 120 records the specific Bluetooth packet, but the first Bluetooth circuit 110 does not receive the specific Bluetooth packet, the first Bluetooth communication circuit 111 will not send the corresponding confirmation message to the remote Bluetooth.装置102。 Device 102.

Obviously, when the control circuit 115 of the first Bluetooth circuit 110 decides whether to send a confirmation message corresponding to a specific Bluetooth packet to the remote Bluetooth device 102, it does not consider whether the second Bluetooth circuit 120 has a transmission and the specific Bluetooth packet. The notification information corresponding to the Bluetooth packet is sent to the first Bluetooth circuit 110.

In practice, the aforementioned notification information sent by the second Bluetooth circuit 120 to the first Bluetooth circuit 110 can be implemented in various suitable data formats. For example, when the second Bluetooth circuit 120 receives a specific Bluetooth packet from the remote Bluetooth device 102, the control circuit 125 can retrieve the corresponding packet sequence number from the specific Bluetooth packet, and combine the packet sequence number with the identification number. The device code or device identification data of the second Bluetooth circuit 120 is combined or encoded into notification information corresponding to the specific Bluetooth packet. For another example, the control circuit 125 may extract appropriate packet identification data from the specific Bluetooth packet, and combine or encode the packet identification data together with the device code or device identification data for identifying the second Bluetooth circuit 120 into a Notification information corresponding to the specific Bluetooth packet.

From the foregoing description, it can be seen that in the process that the remote Bluetooth device 102 successively sends out multiple Bluetooth packets, the first Bluetooth circuit 110 will repeat the aforementioned process 506 under normal circumstances. And 508, and then send multiple confirmation messages to the remote Bluetooth device 102. On the other hand, other member circuits will repeat the aforementioned processes 510 and 512 under normal circumstances, and then transmit multiple notification messages to the first Bluetooth circuit 110. For example, the second Bluetooth circuit 120 repeats the aforementioned processes 510 and 512 to transmit multiple notification messages corresponding to multiple Bluetooth packets sent by the remote Bluetooth device 102 to the first Bluetooth circuit 110.

In actual operation, individual member circuits may occasionally miss some packets sent by the remote Bluetooth device 102, and the missed packets and the number of packets of different member circuits may also be different. Therefore, the first Bluetooth circuit 110 can perform the process 514 intermittently or periodically to determine whether the individual member circuit misses the packet sent by the remote Bluetooth device 102 according to a plurality of notification messages sent by the individual member circuit.

For example, in the process 514, the control circuit 115 of the first Bluetooth circuit 110 may check whether the second Bluetooth circuit 120 missed part of the packet sent by the remote Bluetooth device 102 according to a plurality of notification messages from the second Bluetooth circuit 120 . The control circuit 115 can parse out a plurality of packet sequence number data or a plurality of packet identification data from the plurality of notification messages sent from the second Bluetooth circuit 120. The control circuit 115 can check whether the packet sequence number data or the packet identification data have continuity, so as to check whether the second Bluetooth circuit 120 misses part of the packets sent by the remote Bluetooth device 102. If the aforementioned packet sequence number data or packet identification data is discontinuous, the control circuit 115 can determine that the second Bluetooth circuit 120 has missed a packet corresponding to the missing packet sequence number data or packet identification data. According to the missing packet sequence number data or packet identification data, the control circuit 115 can further define which packets are missed by the second Bluetooth circuit 120.

As mentioned above, a packet handshaking mechanism is adopted between the first Bluetooth circuit 110 and the remote Bluetooth device 102. Therefore, the first Bluetooth circuit 110 should be able to successfully obtain all the packets sent by the remote Bluetooth device 102 under normal circumstances. If the control circuit 115 detects that a specific member circuit missed part of the packet sent by the remote Bluetooth device 102, it will proceed to the process 516 to transmit the missed packet of the specific member circuit to the specific member through the data transmission circuit 113 The circuit enables the specific member circuit to complete the missing packets.

By repeating the foregoing operations, other member circuits can fill in missing packets with the assistance of the first Bluetooth circuit 110.

For example, when the control circuit 115 detects that the second Bluetooth circuit 120 missed part of the packet sent by the remote Bluetooth device 102, the control circuit 115 will perform the process 516 to transmit the packet missed by the second Bluetooth circuit 120 through data. The circuit 113 transmits to the second Bluetooth circuit 120. In this case, the second Bluetooth circuit 120 will perform the process 518 to receive the packet from the first Bluetooth circuit 110 through the data transmission circuit 123, thereby obtaining the missed packet.

During the interaction between the multi-member bluetooth device 100 and the remote bluetooth device 102, if other member circuits need to send commands or data to the remote bluetooth device 102, the related commands or data can be transmitted to the first bluetooth circuit through the data transmission circuit 110. Then, the first Bluetooth circuit 110 can transmit the aforementioned commands or data to the remote Bluetooth device 102 through the Bluetooth communication circuit 111. In other words, other member circuits can indirectly transmit commands or data to the remote Bluetooth device 102 through the first Bluetooth circuit 110.

It can be seen from the foregoing description that a packet handshaking mechanism is adopted between the first Bluetooth circuit 110 and the remote Bluetooth device 102 to avoid missing packets, and the timing of the first Bluetooth communication circuit 111 sending confirmation information to the remote Bluetooth device 102 It has nothing to do with whether the data transmission circuit 113 has received the aforementioned notification information from the second Bluetooth circuit 120.

Therefore, when other member circuits receive the packet sent by the remote Bluetooth device 102, the action of sending corresponding notification information to the first Bluetooth circuit 110 will not interfere or delay the communication between the first Bluetooth circuit 110 and the remote Bluetooth device 102. The packet handshaking procedure does not impose additional operational burden on the first Bluetooth circuit 110 to perform the aforementioned packet handshaking procedure.

On the other hand, since other member circuits in the multi-member Bluetooth device 100 (for example, the aforementioned second Bluetooth circuit 120 and third Bluetooth circuit 130) will record the packets sent by the remote Bluetooth device 102, each member circuit is Under normal circumstances, most of the packets sent by the remote Bluetooth device 102 are received. Therefore, the first Bluetooth circuit 110, which is the main Bluetooth circuit, only needs to transmit packets missed by individual member circuits to the corresponding member circuit. That is, it is not necessary to transmit all the packets sent by the remote Bluetooth device 102 to each member circuit.

Compared with the aforementioned embodiment in FIG. 2, the multi-member Bluetooth device 100 uses the method of FIG. 5 to interact with the remote Bluetooth device 102, which can greatly reduce the packet size of the main Bluetooth circuit (the first Bluetooth circuit 110 in this example). Transmission burden, thereby saving the power consumption of the main Bluetooth circuit. In this way, the working time and standby time of the main Bluetooth circuit can be effectively extended.

In addition, it can greatly reduce the data transmission bandwidth requirements between the main Bluetooth circuit and other member circuits, so the hardware design of the main Bluetooth circuit and other member circuits can be simplified, and/or the circuit complexity and circuit cost can be reduced. .

During operation, various suitable existing data synchronization mechanisms can be used between different member circuits of the multi-member Bluetooth device 100 to ensure that different member circuits can synchronously play audio data or video data transmitted by the remote Bluetooth device 102. This avoids the inconsistency of the playback timing of different member circuits.

In the process of the multi-member Bluetooth device 100 interacting with the remote Bluetooth device 102 using the method of FIG. 5, the master Bluetooth circuit can intermittently evaluate whether to transfer the role of the master Bluetooth circuit to other member circuits. Similarly, other member circuits can also intermittently evaluate whether they want to take the initiative to replace the role of the main Bluetooth circuit. Hereinafter, FIG. 6 to FIG. 7 will be used to illustrate another method for seamless handover between different member circuits of the multi-member Bluetooth device 100.

For example, during the operation of the multi-member Bluetooth device 100, the control circuit 115 of the first Bluetooth circuit 110 can periodically or intermittently perform the process 602 in FIG. 6, while the control circuits of other member circuits can be periodically or intermittently. The process 610 in FIG. 6 is performed.

In the process 602, the control circuit 115 calculates the Bluetooth packet loss rate of other member circuits, and compares the Bluetooth packet loss rate of other members with the Bluetooth packet loss rate of the first Bluetooth circuit 110 to evaluate the other member circuits and the first Bluetooth packet loss rate. The relative reception quality between the Bluetooth circuits 110. For the first Bluetooth circuit 110, when the Bluetooth packet loss rate of a certain member circuit is higher, it means that the first Bluetooth circuit 110 may resend packets to the member circuit more often.

For example, in the process 602, the control circuit 115 can calculate the total number of times that a certain member circuit (for example, the second Bluetooth circuit 120) missed the Bluetooth packet sent by the remote Bluetooth device 102, and the missed reception The average number of packets, or the moving average number of missed packets (moving average), and the calculated result represents the Bluetooth packet loss rate of the member circuit.

For another example, the control circuit 115 may calculate the total number of times of re-sending packets to a certain member circuit or the moving average number of times, and use the calculated result to represent the Bluetooth packet loss rate of the member circuit.

If the control circuit 115 finds that the Bluetooth packet loss rate of other member circuits is lower than the Bluetooth packet loss rate of the first Bluetooth circuit 110, the first Bluetooth circuit 110 can proceed to the process 604; otherwise, the first Bluetooth circuit 110 will continue to monitor individual members Changes in the circuit’s Bluetooth packet loss rate.

In the process 604, the control circuit 115 may select a member circuit from other member circuits with a lower Bluetooth packet loss rate than the first Bluetooth circuit 110 to act as the main Bluetooth circuit in the subsequent operation, and transfer a member circuit through the data transmission circuit 113 Instruction (handover instruction), sent to the selected member circuit.

For example, the control circuit 115 can select the member circuit with the lowest Bluetooth packet loss rate to play the role of the main Bluetooth circuit in the subsequent operation.

Alternatively, the control circuit 115 can randomly select a member circuit from the member circuits with a lower Bluetooth packet loss rate than the first Bluetooth circuit 110 at a predetermined time point to play the role of the main Bluetooth circuit in the subsequent operation.

For convenience of description, it is assumed below that the control circuit 115 selects the second Bluetooth circuit 120 in the aforementioned process 604 to play the role of the main Bluetooth circuit in the subsequent operation.

Therefore, the control circuit 115 transmits the handover instruction to the second Bluetooth circuit 120 through the data transmission circuit 113 and the data transmission circuit 123 in the process 604.

The handover instruction sent by the control circuit 115 in the process 604 can be used to instruct the second Bluetooth circuit 120 to take over the role of the first Bluetooth circuit 110 to directly communicate with the remote Bluetooth device 102 Two-way packet transmission. That is, the aforementioned handover instruction will indicate that the second Bluetooth circuit 120 will directly perform two-way packet transmission with the remote Bluetooth device 102 in the Bluetooth wireless transmission mode, so as to continue to play the role of the main Bluetooth circuit.

If the Bluetooth connection parameters referred to in the aforementioned process 502 are acquired by the first Bluetooth circuit 110 and transmitted to the second Bluetooth circuit 120, the control circuit 115 can also identify the device of the first Bluetooth circuit 110 in the process 604 The data is transmitted to the second Bluetooth circuit 120 through the data transmission circuit 113 and the data transmission circuit 123.

In the process 606, the control circuit 125 of the second Bluetooth circuit 120 receives the handover instruction from the first Bluetooth circuit 110 through the data transmission circuit 123.

In the process 608, the first bluetooth circuit 110 or the second bluetooth circuit 120 will notify other member circuits in the multi-member bluetooth device 100, and then the second bluetooth circuit 120 is responsible for the two-way packet transmission with the remote bluetooth device 102. And instruct other member circuits to change to notify the second Bluetooth circuit 120 when they record the packet sent by the remote Bluetooth device 102.

That is, the second Bluetooth circuit 120 will play the role of the main Bluetooth circuit instead. In the process 608, the control circuit 115 or 125 can transmit the aforementioned notification and instruction information to the data transmission circuits of other member circuits through the corresponding data transmission circuit.

After the first bluetooth circuit 110 or the second bluetooth circuit 120 has performed the process 608, the first bluetooth circuit 110 will be changed to only receive the packets sent by the remote Bluetooth device 102 in one direction, instead of transmitting the packets to the remote Bluetooth The device 102 avoids the problem of packet collision in the remote Bluetooth device 102.

Since the second bluetooth circuit 120, which has a lower Bluetooth packet loss rate than the first bluetooth circuit 110, is responsible for the two-way packet transmission with the remote bluetooth device 102, the possibility that the remote bluetooth device 102 needs to retransmit the packet can be reduced. , Thereby reducing the operating burden of the remote Bluetooth device 102.

As mentioned above, when the multi-member Bluetooth device 100 interacts with the remote Bluetooth device 102 using the method of FIG. 5, the control circuits of other member circuits can periodically or intermittently perform the process 610 in FIG. 6 to detect Measure whether the main Bluetooth circuit 110 is disabled or disabled Disappear.

For example, in the process 610, the control circuit 125 of the second Bluetooth circuit 120 can detect whether the main Bluetooth circuit 110 is disabled or missing. In practice, the control circuit 125 can detect whether the main Bluetooth circuit 110 is disabled or missing by evaluating the data communication status between the second Bluetooth circuit 120 and the first Bluetooth circuit 110 that is playing the role of the main Bluetooth circuit at that time.

The aforementioned data communication status between the second Bluetooth circuit 120 and the first Bluetooth circuit 110 mainly refers to whether the data transmission circuits 123 and 113 still maintain normal communication capabilities.

In this embodiment, the control circuit 125 may be configured such that the first Bluetooth circuit 110 does not interact with the second Bluetooth circuit 120 for a predetermined period of time, or the packet missed by the second Bluetooth circuit 120 does not obtain the first Bluetooth circuit 110. When the frequency of reissuing exceeds a predetermined threshold, the main Bluetooth circuit 110 is determined to be disabled or missing.

When the control circuit 125 determines that the first Bluetooth circuit 110 is disabled or missing, the second Bluetooth circuit 120 can perform the aforementioned process 608 to notify other member circuits in the multi-member Bluetooth device 100 (including the first Bluetooth circuit 110) Next, the second Bluetooth circuit 120 is responsible for the two-way packet transmission with the remote Bluetooth device 102, and instructs other member circuits to change to notify the second Bluetooth circuit 120 when they record packets sent by the remote Bluetooth device 102. That is, the second Bluetooth circuit 120 will play the role of the main Bluetooth circuit instead.

Regardless of whether the second Bluetooth circuit 120 actively decides to continue to play the role of the main Bluetooth circuit, or the first Bluetooth circuit 110 specifies that the second Bluetooth circuit 120 continues to play the role of the main Bluetooth circuit, the multi-member Bluetooth device 100 will proceed next The process shown in FIG. 7 is used to interact with the remote Bluetooth device 102.

In the process 702, the second bluetooth circuit 120 will take over the first bluetooth circuit 110 to play the role of being responsible for two-way packet transmission with the remote bluetooth device 102.

For example, suppose that the first Bluetooth circuit 110 uses the first Bluetooth circuit 110 to perform two-way packet transmission with the remote Bluetooth device 102 in the foregoing process 506, and the first Bluetooth circuit 110 transfers the first Bluetooth circuit to the remote Bluetooth device 102 in the foregoing process 604. The device identification data of 110 is sent to the second bluetooth circuit 120, and the control circuit 125 of the second bluetooth circuit 120 performs the process 702 The controllable Bluetooth communication circuit 121 uses the device identification data and Bluetooth connection parameters provided by the first Bluetooth circuit 110, pretending to be the name of the first Bluetooth circuit 110, and directly performs two-way packet transmission with the remote Bluetooth device 102 to receive the remote Bluetooth device Various commands or data transmitted from 102, or various commands or data are sent to the remote Bluetooth device 102. As in the embodiment of FIG. 2, the so-called pretending to be the name of the first Bluetooth circuit 110 means that the second Bluetooth circuit 120 will deliberately use the first Bluetooth circuit 110 when performing two-way Bluetooth packet transmission with the remote Bluetooth device 102 The identification data is used as the device identification data of the second Bluetooth circuit 120, thereby causing the remote Bluetooth device 102 to think that the object of its Bluetooth communication is still the same as that in the aforementioned process 506, that is, they are all the first Bluetooth circuit 110.

For another example, suppose that the Bluetooth connection parameters referred to in the foregoing process 502 are acquired by the second Bluetooth circuit 120 and transmitted to the first Bluetooth circuit 110, and the first Bluetooth circuit 110 uses the second Bluetooth circuit in the foregoing process 506 To perform two-way packet transmission with the remote Bluetooth device 102 under the name of 120, the control circuit 125 of the second Bluetooth circuit 120 can control the Bluetooth communication circuit 121 to use the device identification data of the second Bluetooth circuit 120 and the second Bluetooth circuit 120 in the process 702 The previously acquired Bluetooth connection parameters directly perform two-way packet transmission with the remote Bluetooth device 102 to receive various commands or data from the remote Bluetooth device 102 or send various commands or data to the remote Bluetooth device 102. Unlike the previous embodiment, the second Bluetooth circuit 120 does not pretend to be the name of the first Bluetooth circuit 110 to perform packet transmission with the remote Bluetooth device 102, but uses the name of the second Bluetooth circuit 120 to communicate with the remote Bluetooth device 102. The packet transmission is performed, but the remote Bluetooth device 102 also thinks that the objects with which it performs Bluetooth communication are still the same as in the process 506, that is, they are all the second Bluetooth circuit 120.

Similarly, the second Bluetooth circuit 120 takes over the role of the first Bluetooth circuit 110 to perform two-way packet transmission with the remote Bluetooth device 102, and does not need to be approved by the remote Bluetooth device 102 first. Therefore, after the second Bluetooth circuit 120 takes over the role of the first Bluetooth circuit 110, the remote Bluetooth device 102 will not be required to perform the Bluetooth connection procedure again.

In other words, the aforementioned second Bluetooth circuit 120 takes over the first Bluetooth circuit 110 to play the role of responsible and remote The way in which the end Bluetooth device 102 performs the role of two-way packet transmission can save the time required to re-execute the Bluetooth connection procedure with the remote Bluetooth device 102. From another perspective, the aforementioned method can effectively avoid the signal interruption caused by the second Bluetooth circuit 120 needing to re-establish the Bluetooth connection process with the remote Bluetooth device 102.

Next, every time the Bluetooth communication circuit 121 receives a packet from the remote Bluetooth device 102, the control circuit 112 of the second Bluetooth circuit 120 will perform the process 704, and transmit a packet corresponding to the received packet through the Bluetooth communication circuit 121. The confirmation message is given to the remote Bluetooth device 102. If the remote Bluetooth device 102 does not receive the corresponding confirmation information of the specific packet, it will retransmit the specific packet to the Bluetooth communication circuit 121. Similar to the aforementioned embodiment in FIG. 5, various suitable existing packet handshaking mechanisms can be used between the second Bluetooth circuit 120 and the remote Bluetooth device 102 to reduce or avoid the occurrence of missing packets. In this way, the Bluetooth packet loss rate of the second Bluetooth circuit 120 can be effectively reduced.

On the other hand, during the two-way packet transmission process between the second Bluetooth circuit 120 and the remote Bluetooth device 102, other member circuits will perform the process 706 to record the packet sent by the remote Bluetooth device 102.

In the process 706, the control circuits of other member circuits will record the packets sent by the remote Bluetooth device 102 through the relevant Bluetooth communication circuit using the Bluetooth connection parameters obtained in the foregoing process 502. In one embodiment, other member circuits can record all Bluetooth packets sent by the remote Bluetooth device 102. In another embodiment, other member circuits will only record the Bluetooth packets that the remote Bluetooth device 102 wants to transmit to the second Bluetooth circuit 120, but not the remote Bluetooth device 102 that wants to transmit to the multi-member Bluetooth device 100. The Bluetooth packet of the device.

For example, when the second Bluetooth circuit 120 performs the process 702 and the remote Bluetooth device 102 performs two-way packet transmission, the control circuit 115 of the first Bluetooth circuit 110 can record the packet sent by the remote Bluetooth device 102 through the Bluetooth communication circuit 111 .

Each time other member circuits including the first Bluetooth circuit 110 record (that is, receive) a packet sent by the remote Bluetooth device 102, the process 708 is performed. In process 708 , The member circuit will send a notification message corresponding to the received packet to the second Bluetooth circuit 120, but will not send any confirmation message to the remote Bluetooth device 102.

In other words, the operation mode of the other member circuits in the process 708 is very similar to the operation mode of the process 512 in FIG. 5, except that the object that transmits the notification information is changed to the second Bluetooth circuit that plays the role of the main Bluetooth circuit. The circuit 120 is no longer the first Bluetooth circuit 110.

Therefore, although all the member circuits in the multi-member Bluetooth device 100 will receive the packet sent by the remote Bluetooth device 102, only at this time the second Bluetooth circuit 120, which plays the role of the main Bluetooth circuit, will send an acknowledgement message to the remote device when receiving the packet. The end Bluetooth device 102 and other member circuits including the first Bluetooth circuit 110 will not transmit confirmation information to the remote Bluetooth device 102 to avoid misjudgment by the remote Bluetooth device 102.

For example, every time the first Bluetooth circuit 110 receives a packet sent by the remote Bluetooth device 102, the control circuit 115 can perform the process 708 to send a corresponding notification message to the data transmission circuit of the second Bluetooth circuit 120 through the data transmission circuit 113 123, but the control circuit 115 will not send any confirmation information to the remote Bluetooth device 102 through the Bluetooth communication circuit 111 and the data transmission circuit 113. That is, during the two-way packet transmission process between the second Bluetooth circuit 120 and the remote Bluetooth device 102, the first Bluetooth circuit 110 will no longer perform a packet handshaking procedure with the remote Bluetooth device 102.

In this embodiment, the purpose of the first Bluetooth circuit 110 to transmit the aforementioned notification information to the second Bluetooth circuit 120 is also not to perform a packet handshaking procedure with the second Bluetooth circuit 120, but to allow the second Bluetooth circuit 120 to be able to The first Bluetooth circuit 110 records the result of the packet sent by the remote Bluetooth device 102.

Similar to the aforementioned embodiment in FIG. 5, the second Bluetooth circuit 120 can perform the process 710 intermittently or periodically to determine whether the individual member circuit missed the remote Bluetooth device 102 according to a plurality of notification messages sent by the individual member circuit. Packets.

For example, in the process 710, the control circuit 125 of the second bluetooth circuit 120 can check whether the first bluetooth circuit 110 is leaking according to a plurality of notification messages sent by the first bluetooth circuit 110. Receive part of the packet sent by the remote Bluetooth device 102. The control circuit 125 can parse out a plurality of packet sequence number data or a plurality of packet identification data from the plurality of notification messages sent from the first Bluetooth circuit 110. The control circuit 125 can check whether the packet sequence number data or the packet identification data have continuity, so as to check whether the first Bluetooth circuit 110 misses some packets sent by the remote Bluetooth device 102. If the aforementioned packet sequence number data or packet identification data is discontinuous, the control circuit 125 can determine that the first Bluetooth circuit 110 has missed a packet corresponding to the missing packet sequence number data or packet identification data. According to the missing packet sequence number data or packet identification data, the control circuit 125 can further define which packets are missed by the first Bluetooth circuit 110.

As mentioned above, a packet handshaking mechanism is adopted between the second Bluetooth circuit 120 and the remote Bluetooth device 102. Therefore, the second Bluetooth circuit 120 should be able to successfully obtain all subsequent packets sent by the remote Bluetooth device 102 under normal circumstances. If the control circuit 125 detects that a particular member circuit missed part of the packet sent by the remote Bluetooth device 102, it will proceed to the process 712 to transmit the missed packet of the particular member circuit to the particular member through the data transmission circuit 123 The circuit enables the specific member circuit to complete the missing packets.

By repeating the aforementioned operations, other member circuits can fill in the missing packets with the assistance of the second Bluetooth circuit 120.

For example, when the control circuit 125 detects that the first Bluetooth circuit 110 missed part of the packets sent by the remote Bluetooth device 102, the control circuit 125 will perform the process 712 to transmit the missed packets by the first Bluetooth circuit 110 through data. The circuit 123 transmits to the first Bluetooth circuit 110. In this case, the first Bluetooth circuit 110 performs the process 714 to receive the packet from the second Bluetooth circuit 120 through the data transmission circuit 113, thereby obtaining the missed packet.

During the period when the second Bluetooth circuit 120 plays the role of the main Bluetooth circuit, if other member circuits need to send commands or data to the remote Bluetooth device 102, the related commands or data can be sent to the second Bluetooth circuit 120 through the data transmission circuit. Then, the second bluetooth circuit 120 can transmit the aforementioned commands or data to the remote bluetooth through the bluetooth communication circuit 121. 装置102。 Device 102. In other words, other member circuits can indirectly transmit commands or data to the remote Bluetooth device 102 through the second Bluetooth circuit 120.

Similarly, when the multi-member Bluetooth device 100 interacts with the remote Bluetooth device 102 using the method of FIG. 7, the second Bluetooth circuit 120, which plays the role of the main Bluetooth circuit, can periodically or intermittently calculate the Bluetooth packet loss of other member circuits. The Bluetooth packet loss rate of other members is compared with the Bluetooth packet loss rate of the second Bluetooth circuit 120 to evaluate the relative reception quality between the other member circuits and the second Bluetooth circuit 120. Its operation is similar to that of the first Bluetooth circuit 120. The operation of the circuit 110 in the aforementioned process 602 is similar. Similarly, other member circuits can periodically or intermittently evaluate whether to take the initiative to replace the role of the main Bluetooth circuit.

For example, at this time, the control circuit 115 of the first Bluetooth circuit 110 can periodically or intermittently perform the process 716 in FIG. 7 to detect whether the second Bluetooth circuit is disabled or missing. Its operation is the same as that of the aforementioned second Bluetooth circuit 120. The operation in the process 610 is similar.

Please note that the aforementioned seamless handover method in FIGS. 6 to 7 is only an exemplary embodiment, and does not limit the actual implementation of the present invention. In practice, when the multi-member Bluetooth device 100 interacts with the remote Bluetooth device 102 using the method shown in FIG. 5, the main Bluetooth circuit can also use the evaluation method of the process 210 in FIG. 2 to determine whether to use the method in FIG. The role of the Bluetooth circuit is handed over to other member circuits.

For example, in the process of the multi-member Bluetooth device 100 interacting with the remote Bluetooth device 102 using the method of FIG. 5, the first Bluetooth circuit 110, which plays the role of the main Bluetooth circuit, can use the judgment circuit 117 to evaluate the computing load of the first Bluetooth circuit 110 , Remaining power, temperature, and/or operating environment and other operating parameters to determine whether it is necessary to transfer the role of the primary Bluetooth circuit played by the first Bluetooth circuit 110 to other member circuits. The judging circuit 117 can perform when the computing load of the first Bluetooth circuit 110 exceeds a predetermined level, the remaining power of the first Bluetooth circuit 110 is lower than a predetermined level, the temperature of the first Bluetooth circuit 110 exceeds a predetermined temperature value, and/or the first Bluetooth circuit 110 When the operating environment of the Bluetooth circuit 110 deviates from the preset condition, it is determined that the role of the primary Bluetooth circuit played by the first Bluetooth circuit 110 needs to be handed over to other member circuits.

For another example, when the judgment circuit 117 performs the aforementioned evaluation operation, it can also compare the first Bluetooth The difference between the operating parameters of the circuit 110 and the operating parameters of other member circuits is used as a basis for judging whether the role of the primary Bluetooth circuit played by the first Bluetooth circuit 110 needs to be handed over to other member circuits. In this embodiment, other member circuits can use their respective judgment circuits to evaluate their own operating parameters such as computing load, surplus power, temperature, and/or operating environment, and transmit the obtained operating parameters to the first during operation. The judgment circuit 117 of the Bluetooth circuit 110. The judging circuit 117 can perform when the computing load of the first Bluetooth circuit 110 exceeds other member circuits by a predetermined degree, the remaining power of the first Bluetooth circuit 110 is lower than the remaining power of other member circuits by a predetermined degree, and the temperature of the first Bluetooth circuit 110 When the temperature exceeds the temperature of other member circuits by a predetermined level, and/or the operating environment of the first Bluetooth circuit 110 deviates from the preset condition but the operating environment of other member circuits meets the preset condition, it is determined that the first Bluetooth circuit 110 needs to be played The role of the main Bluetooth circuit is handed over to other member circuits.

In practice, the judging circuit 117 can also take the operating parameters of the first Bluetooth circuit 110 and the difference in operating parameters between the first Bluetooth circuit 110 and other member circuits into the aforementioned comprehensive judgment considerations.

For example, the judging circuit 117 can perform when the computing load of the first Bluetooth circuit 110 exceeds a predetermined level, the remaining power of the first Bluetooth circuit 110 is lower than a predetermined level, the temperature of the first Bluetooth circuit 110 exceeds a predetermined temperature value, and the first Bluetooth circuit 110 exceeds a predetermined temperature. The calculation load of the circuit 110 exceeds that of other member circuits by a predetermined degree, the remaining power of the first Bluetooth circuit 110 is lower than the remaining power of other member circuits by a predetermined degree, and the temperature of the first Bluetooth circuit 110 exceeds the temperature of other member circuits by a predetermined degree. When the operating environment of the first Bluetooth circuit 110 deviates from the preset condition to a predetermined degree and/or the operating environment of other member circuits meets the preset condition, it is determined that the role of the primary Bluetooth circuit played by the first Bluetooth circuit 110 needs to be handed over to others. Member circuit.

Once the judging circuit 117 determines that the role of the primary Bluetooth circuit played by the first Bluetooth circuit 110 needs to be handed over to other member circuits, the first Bluetooth circuit 110 can proceed to the process 604 in FIG. 6 to transmit the handover instruction to other suitable member circuits (for example, , The aforementioned second Bluetooth Circuit 120).

It can be seen from the foregoing description that while the first Bluetooth circuit 110 performs two-way packet transmission with the remote Bluetooth device 102 through the Bluetooth communication circuit 111, the Bluetooth communication circuit 121 of the second Bluetooth circuit 120 does not perform two-way packet transmission with the remote Bluetooth device 102. During the two-way packet transmission period between the second Bluetooth circuit 120 and the remote Bluetooth device 102 through the Bluetooth communication circuit 121, the Bluetooth communication circuit 111 of the first Bluetooth circuit 110 will not perform two-way packet transmission with the remote Bluetooth device 102.

Please note that the execution sequence of the processes in the foregoing FIG. 5 to FIG. 7 is only an exemplary embodiment, and does not limit the actual implementation of the present invention.

For example, the aforementioned processes 502 and 504 in FIG. 5 may be performed at the same time, or the sequence of processes 502 and 504 may be reversed.

For another example, the processes 602 and 610 in FIG. 6 can be performed at any time between the processes 506 to 518 in FIG. 5.

In some embodiments, the processes 602, 604, and 606 in FIG. 6 may be omitted, or the process 610 may be omitted.

The number of member circuits in the aforementioned multi-member Bluetooth device 100 can be reduced to two, or can be increased according to actual circuit application requirements. In an embodiment in which the number of member circuits in the multi-member Bluetooth device 100 is only two, when the second Bluetooth circuit 120 determines that the first Bluetooth circuit 110 is disabled or missing in the process 610 of FIG. 6, the process 608 can be skipped. The process 702 in FIG. 7 is directly performed.

In addition, in some embodiments, the judgment circuit 117 in the first Bluetooth circuit 110 and/or the judgment circuit 127 in the second Bluetooth circuit 120 may also be omitted.

It can be seen from the foregoing description that when the multi-member Bluetooth device 100 interacts with the remote Bluetooth device 102 using the method shown in FIG. 5, other member circuits will record the packets sent by the remote Bluetooth device 102, so the main Bluetooth circuit only needs to transmit Packets missed by other member circuits can be sent to other member circuits, and there is no need to forward all the packets sent by the remote Bluetooth device 102 to other member circuits. Therefore, the multi-member Bluetooth device 100 adopts the method of FIG. The interaction between the end Bluetooth device 102 can greatly reduce the packet forwarding burden of the main Bluetooth circuit, thereby saving the power consumption of the main Bluetooth circuit and reducing the heat generation of the main Bluetooth circuit. In this way, the working time and standby time of the main Bluetooth circuit can be effectively prolonged, the service life of the main Bluetooth circuit can be prolonged, and/or the user experience can be improved.

In addition, it can greatly reduce the data transmission bandwidth requirements between the main Bluetooth circuit and other member circuits, so the hardware design of the main Bluetooth circuit and other member circuits can be simplified, and/or the circuit complexity and circuit cost can be reduced. .

In addition, when the bluetooth packet loss rate of other member circuits is lower than the main bluetooth circuit, or the main bluetooth circuit is disabled or missing, other member circuits can take over the main bluetooth circuit to play the role of two-way packet transmission with the remote bluetooth device 102. There is no need to re-establish a new Bluetooth connection with the remote Bluetooth device 102, so the signal interruption of the member circuits in the multi-member Bluetooth device 100 can be effectively avoided.

In the specification and the scope of patent application, certain words are used to refer to specific components, and Those skilled in the art may use different terms to refer to the same element. This specification and the scope of the patent application do not use the difference in names as a way of distinguishing elements, but the difference in functions of the elements as the basis for distinguishing. The "include" mentioned in the specification and the scope of the patent application is an open term and should be interpreted as "include but not limited to". In addition, the term "coupling" here includes any direct and indirect connection means. Therefore, if it is described in the text that the first element is coupled to the second element, it means that the first element can be directly connected to the second element through electrical connection, wireless transmission, optical transmission, or other signal connection methods, or through other elements or connections. The means is indirectly connected to the second element electrically or signally.

The description method of "and/or" used in the description includes one of the listed items or any combination of multiple items. In addition, unless otherwise specified in the specification, any term in the singular case includes the meaning of the plural case at the same time.

The above are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should fall within the scope of the present invention.

502~518: Operation process

Claims (5)

A multi-member Bluetooth device (100) for data transmission with a remote Bluetooth device (102). The multi-member Bluetooth device (100) includes: a main Bluetooth circuit (110), including: a first Bluetooth communication circuit (111); a first data transmission circuit (113); and a first control circuit (115) configured to communicate with the remote Bluetooth device (102 via the first Bluetooth communication circuit (111) in Bluetooth wireless transmission mode) ) For two-way packet transmission, and data communication with other devices through the first data transmission circuit (113); and a pair of Bluetooth circuits (120), including: a second Bluetooth communication circuit (121); a second data A transmission circuit (123); and a second control circuit (125) configured to control the second data transmission circuit (123) to perform data communication with the first data transmission circuit (113); wherein, in the first Bluetooth communication During the packet transmission between the circuit (111) and the remote Bluetooth device (102), the second control circuit (125) will use the second Bluetooth communication circuit (121) to sniff the remote Bluetooth device ( 102) the packet sent out; the first control circuit (115) is also configured to detect that the secondary Bluetooth circuit (120) missed the packet sent by the remote Bluetooth device (102), the secondary Bluetooth circuit (120) The missed packet is transmitted to the second data transmission circuit (123) through the first data transmission circuit (113); and the first control circuit (115) is also configured to receive the remote Bluetooth device ( 102) when a packet is sent, a confirmation message is sent to the remote Bluetooth device (102) through the first Bluetooth communication circuit (111), and the second control circuit (125) is also configured to receive the remote Bluetooth device (102) When the packet sent by the device (102) is transmitted through the second data The path (123) transmits a corresponding notification message to the first data transmission circuit (113), but does not transmit any confirmation information to the remote Bluetooth device (102) through the second Bluetooth communication circuit (121); wherein, the The time sequence of the first Bluetooth communication circuit (111) transmitting the confirmation information to the remote Bluetooth device (102) is independent of whether the first data transmission circuit (113) has received the notification information; wherein, the second control circuit (125) is also set to perform two-way packet transmission with the remote Bluetooth device (102) through the second Bluetooth communication circuit (121) when the main Bluetooth circuit (110) is disabled or missing, so as to avoid missing the remote The packet sent by the end Bluetooth device (102); and the second control circuit (125) is also set to detect the data communication status between the main Bluetooth circuit (110) and the secondary Bluetooth circuit (120) Whether the main Bluetooth circuit (110) is disabled or missing. The multi-member Bluetooth device (100) according to claim 1, wherein the first control circuit (115) is further configured to check the sub-device based on a plurality of notification messages from the second data transmission circuit (123) Whether the Bluetooth circuit (120) misses the packet sent by the remote Bluetooth device (102). The multi-member Bluetooth device (100) according to claim 1, wherein the main Bluetooth circuit (110) further includes: a first judgment circuit (117), coupled to the first control circuit (115), configured to Evaluate the computing load, surplus power, temperature, or operating environment of the main Bluetooth circuit (110); among them, the first control circuit (115) will exceed a predetermined level when the computing load of the main Bluetooth circuit (110) exceeds a predetermined level. When the remaining power of the main Bluetooth circuit (110) is lower than a predetermined level, the temperature of the main Bluetooth circuit (110) exceeds a predetermined temperature value, or the operating environment of the main Bluetooth circuit (110) deviates from a preset condition, it is indicated The secondary Bluetooth circuit (120) takes over the main Bluetooth circuit (110) and the remote Bluetooth device (102) for dual To packet transmission. The multi-member Bluetooth device (100) according to claim 1, wherein the main Bluetooth circuit (110) further includes: a first judgment circuit (117) coupled to the first control circuit (115) and the second A data transmission circuit (113) is configured to evaluate the computing load, remaining power, temperature, or operating environment of the main Bluetooth circuit (110), and receive the secondary Bluetooth circuit (120) through the first data transmission circuit (113) ) The calculation load, remaining power, temperature, or operating environment indication information; wherein, the first control circuit (115) will cause the calculation load of the main Bluetooth circuit (110) to exceed that of the secondary Bluetooth circuit (120) To a predetermined level, the remaining power of the main Bluetooth circuit (110) is lower than the remaining power of the secondary Bluetooth circuit (120) to a predetermined level, and the temperature of the primary Bluetooth circuit (110) exceeds the temperature of the secondary Bluetooth circuit (120) When the temperature reaches a predetermined level, or the operating environment of the main Bluetooth circuit (110) deviates from the preset condition but the operating environment of the secondary Bluetooth circuit (120) meets the preset condition, the secondary Bluetooth circuit (120) is instructed to take over the primary The Bluetooth circuit (110) and the remote Bluetooth device (102) perform bidirectional packet transmission. The multi-member Bluetooth device (100) according to any one of claims 1 to 4, wherein, during the two-way packet transmission between the first Bluetooth communication circuit (111) and the remote Bluetooth device (102), the The second Bluetooth communication circuit (121) will not perform two-way packet transmission with the remote Bluetooth device (102), but during the period when the second Bluetooth communication circuit (121) and the remote Bluetooth device (102) perform two-way packet transmission , The first Bluetooth communication circuit (111) will not perform two-way packet transmission with the remote Bluetooth device (102).

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