TWI758225B - Main bluetooth circuit and auxiliary bluetooth circuit of multi-member bluetooth device capable of adaptively switching operation mode in response to data type change of received packets - Google Patents

Abstract

A main Bluetooth circuit and an auxiliary Bluetooth circuit of a multi-member Bluetooth device for communicating data with a remote Bluetooth device are disclosed. In the period during which the auxiliary Bluetooth circuit operates at a relay mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device, and the auxiliary Bluetooth circuit does not sniff packets transmitted from the remote Bluetooth device. But the auxiliary Bluetooth circuit switches from the relay mode to a sniffing mode if the data type of packets transmitted from the remote Bluetooth device changes. In the period during which the auxiliary Bluetooth circuit operates at the sniffing mode, the auxiliary Bluetooth circuit sniffs packets transmitted from the remote Bluetooth device while the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device.

Description

A primary Bluetooth circuit and a secondary Bluetooth circuit in a multi-member Bluetooth device capable of adaptively switching operating modes in response to changes in received packet data types

The present invention relates to bluetooth technology, in particular to a main bluetooth circuit and a secondary bluetooth circuit in a multi-member bluetooth device capable of adaptively switching operation modes in response to changes of received packet data types.

The multi-member Bluetooth device refers to a Bluetooth device composed of a plurality of Bluetooth circuits used in conjunction with each other, for example, a pair of Bluetooth headsets, a group of Bluetooth speakers, and the like. When the multi-member Bluetooth device connects with another Bluetooth device (hereinafter referred to as the remote Bluetooth device), the remote Bluetooth device treats the multi-member Bluetooth device as a single Bluetooth device. When a traditional multi-member Bluetooth device operates, one of the member circuits is set as the main Bluetooth circuit, which is responsible for bidirectional data transmission with the remote Bluetooth device, and the other member circuits are set as the secondary Bluetooth circuit.

In practical applications, the data types of the packets sent by the remote Bluetooth device to the multi-member Bluetooth devices may vary due to changes in the operating situation at the time. For example, when the remote Bluetooth device uses the multi-member Bluetooth device to play audio and video data, the packet sent by the remote Bluetooth device to the multi-member Bluetooth device is usually multimedia data with a sequence number. However, when the remote Bluetooth device sends the data required to update the firmware or program version to the multi-member Bluetooth device, the packets sent by the remote Bluetooth device to the multi-member Bluetooth device are usually non-multimedia data without serial codes ( non-multimedia data), such as program data, update modules, etc.

When the data type of the packet sent by the remote Bluetooth device changes, if the matching operation between the main Bluetooth circuit or the secondary Bluetooth circuit cannot be adjusted adaptively, it is easy to reduce the overall operation performance of the multi-member Bluetooth device, reduce the standby time, and cause The inconvenience of use, or even the inability to complete certain operations (for example, firmware update).

In view of this, how to avoid or reduce the influence of the data type change of the packets sent by the remote Bluetooth device on the multi-member Bluetooth device is a problem to be solved.

This specification provides an embodiment of a master Bluetooth circuit in a multi-member Bluetooth device. The multi-member Bluetooth device is used for data transmission with a remote Bluetooth device, and includes the main Bluetooth circuit and a pair of Bluetooth circuits that can selectively operate in a sniffing mode or a receiving mode. The main Bluetooth circuit includes : a first Bluetooth communication circuit; a first packet parsing circuit configured to analyze packets received by the first Bluetooth communication circuit; and a first control circuit coupled to the first Bluetooth communication circuit and the first packet An analysis circuit; wherein, when the secondary Bluetooth circuit operates in the indirect receiving mode, the first control circuit will use the first Bluetooth communication circuit to receive packets from the remote Bluetooth device, and use the first Bluetooth The communication circuit forwards the received packet to the secondary Bluetooth circuit, and the secondary Bluetooth circuit will receive the packet forwarded by the first Bluetooth communication circuit, but the secondary Bluetooth circuit will not sniff the remote Bluetooth device. packet; when the data type of the packet transmitted from the remote Bluetooth device changes, the secondary Bluetooth circuit will switch from the indirect receiving mode to the sniffing mode; and the secondary Bluetooth circuit operates in the sniffing mode During the mode, the first control circuit uses the first Bluetooth communication circuit to receive packets from the remote Bluetooth device, and the secondary Bluetooth circuit sniffs the packets sent from the remote Bluetooth device.

This specification further provides an embodiment of a secondary Bluetooth circuit in a multi-member Bluetooth device. The multi-member bluetooth device is used for data transmission with a remote bluetooth device, and includes a main bluetooth circuit and the auxiliary bluetooth circuit, the auxiliary bluetooth circuit includes: a second bluetooth communication circuit; a second packet analysis circuit, set analyzing the packets received by the second bluetooth communication circuit; and a second control circuit, coupled to the second bluetooth communication circuit and the second packet analysis circuit, configured to control the secondary bluetooth circuit in a sniffing mode and an operation mode in a receiving communication mode; wherein, during the period when the secondary Bluetooth circuit operates in the indirect receiving communication mode, the main Bluetooth circuit will receive packets from the remote Bluetooth device, and send the received packets to the forwarded to the secondary bluetooth circuit, and the second control circuit will use the second bluetooth communication circuit to receive the packets transmitted by the main bluetooth circuit), but the second control circuit will not use the second bluetooth communication circuit to sniff the packets Detecting the packets sent by the remote Bluetooth device; when the data type of the packets transmitted by the remote Bluetooth device is changed, the secondary Bluetooth circuit will switch from the indirect receiving mode to the sniffing mode; and in the During the period when the secondary Bluetooth circuit operates in the sniffing mode, the primary Bluetooth circuit will receive packets from the remote Bluetooth device, and the second control circuit will use the second Bluetooth communication circuit to sniff the remote Bluetooth device sent out package.

One of the advantages of the above embodiment is that the multi-member Bluetooth device can adaptively adjust the operation mode of the secondary Bluetooth circuit when the data type of the packet transmitted from the remote Bluetooth device changes.

Another advantage of the above embodiments is that the workload of the main Bluetooth circuit, data bandwidth requirements between the main Bluetooth circuit and the secondary Bluetooth circuit, power consumption, heat generation, and/or temperature of the main Bluetooth circuit can be reduced.

Another advantage of the above embodiments is that the standby time or service life of the main Bluetooth circuit can be prolonged, and/or the use comfort of the main Bluetooth circuit can be improved.

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

The embodiments of the present invention will be described below with reference to the relevant drawings. In the drawings, the same reference numbers refer to 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 convenience of description, only three member circuits are shown in the embodiment of FIG. 1 , namely the first Bluetooth circuit 110 , the second Bluetooth circuit 120 , and the third Bluetooth circuit 130 .

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

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

In the first Bluetooth circuit 110, the first Bluetooth communication circuit 111 can be used for data communication with other Bluetooth devices. The first packet parsing circuit 113 can be configured to parse the Bluetooth packet received by the first Bluetooth communication circuit 111 . The first clock synchronization circuit 115 is coupled to the first packet analysis circuit 113 and can be used to adjust the clock signal used by the first Bluetooth circuit 110 to synchronize the piconet used between the first Bluetooth circuit 110 and other Bluetooth devices Clock (piconet clock).

The first control circuit 117 is coupled to the first Bluetooth communication circuit 111 , the first packet analysis circuit 113 , and the first clock synchronization circuit 115 , and is configured to control the operation of the aforementioned circuits. During operation, the first control circuit 117 can directly communicate with the remote Bluetooth device 102 through the first Bluetooth communication circuit 111 in the form of Bluetooth wireless transmission, and communicate with other member circuits through the first Bluetooth communication circuit 111 . The first control circuit 117 also uses the first packet parsing circuit 113 to parse the packets received by the first Bluetooth communication circuit 111 to obtain relevant data or instructions.

In the second Bluetooth circuit 120, the second Bluetooth communication circuit 121 can be used for data communication with other Bluetooth devices. The second packet parsing circuit 123 can be used for parsing the Bluetooth packets received by the second Bluetooth communication circuit 121 . The second clock synchronization circuit 125 is coupled to the second packet analysis circuit 123 and can be used to adjust the clock signal used by the second Bluetooth circuit 120 to synchronize the piconet used between the second Bluetooth circuit 120 and other Bluetooth devices clock.

The second control circuit 127 is coupled to the second Bluetooth communication circuit 121 , the second packet analysis circuit 123 , and the second clock synchronization circuit 125 , and is configured to control the operation of the aforementioned circuits. During operation, the second control circuit 127 can communicate data with other Bluetooth devices through the second Bluetooth communication circuit 121 in a Bluetooth wireless transmission manner, and communicate with other member circuits through the second Bluetooth communication circuit 121 . The second control circuit 127 also utilizes the second packet parsing circuit 123 to parse the packets received by the second Bluetooth communication circuit 121 to obtain relevant data or instructions.

In practice, the aforementioned first Bluetooth communication circuit 111 and the second Bluetooth communication circuit 121 can be implemented by suitable wireless communication circuits capable of supporting various versions of the Bluetooth communication protocol. The aforementioned first packet parsing circuit 113 and the second packet parsing circuit 123 can be implemented by various packet demodulation circuits, digital arithmetic circuits, microprocessors, or application specific integrated circuits (ASICs). accomplish. The aforementioned first clock synchronization circuit 115 and the second clock synchronization circuit 125 can be implemented by various suitable circuits capable of comparing and adjusting the clock frequency and/or the clock phase. The aforementioned first control circuit 117 and second control circuit 127 can be implemented by various microprocessors or digital signal processing circuits with appropriate computing capabilities.

In some embodiments, the first clock synchronization circuit 115 or the second clock synchronization circuit 125 may also be integrated into the first control circuit 117 or the second control circuit 127 . In addition, the aforementioned first packet parsing circuit 113 and the second packet parsing circuit 123 can also be integrated into the aforementioned first Bluetooth communication circuit 111 and the second Bluetooth communication circuit 121, respectively.

In other words, the aforementioned first Bluetooth communication circuit 111 and the first packet parsing circuit 113 may be implemented by different circuits, or may be implemented by the same circuit. Likewise, the aforementioned second Bluetooth communication circuit 121 and the second packet parsing 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 functional blocks in the first Bluetooth circuit 110 can be integrated into a single Bluetooth controller IC. Likewise, all 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 their respective Bluetooth communication 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, the remote Bluetooth device 102 treats the multi-member Bluetooth device 100 as a single Bluetooth device, and multiple member circuits of the multi-member Bluetooth device 100 are in the same During the time, one member circuit will be selected to play the role of the main Bluetooth circuit to handle the main work of receiving packets sent by the remote Bluetooth device 102, while the other member circuits will play the role of auxiliary Bluetooth circuits. character of.

The main Bluetooth circuit can use various known mechanisms to receive packets from the remote Bluetooth device 102 , while the secondary Bluetooth circuit can use an appropriate mechanism to obtain packets from the remote Bluetooth device 102 during the operation of the main Bluetooth circuit.

For example, during the process of the primary Bluetooth circuit receiving the packets sent by the remote Bluetooth device 102 , the secondary Bluetooth circuit can operate in a sniffing mode to actively sniff the packets sent by the remote Bluetooth device 102 . Alternatively, the secondary Bluetooth circuit may operate in a relay mode, and only passively receive the packets forwarded by the primary Bluetooth circuit after receiving the packets sent by the remote Bluetooth device 102, without actively sniffing the remote A packet sent by the Bluetooth device 102 . The respective operation modes of the main Bluetooth circuit and the secondary Bluetooth circuit in the above two situations will be described in detail in the following paragraphs.

Please note that the terms "main Bluetooth circuit" and "secondary Bluetooth circuit" referred to in the description and the scope of the patent application are only for the convenience of distinguishing different member circuits in different ways of receiving packets sent by the remote Bluetooth device 102. It does not indicate whether the main Bluetooth circuit has a certain degree of control authority over other operational aspects of the secondary Bluetooth circuit.

In addition, during the operation of the multi-member Bluetooth device 100, the roles of the primary Bluetooth circuit and the secondary Bluetooth circuit can also be dynamically switched. For example, the master Bluetooth circuit may intermittently evaluate its own operating parameters such as computing load, remaining power, temperature, and/or operating environment, and transfer the role of the master Bluetooth circuit to Other secondary Bluetooth circuits.

For another example, the main Bluetooth circuit may intermittently compare the gaps between its own aforementioned operating parameters and the operating parameters of other sub-Bluetooth circuits, and the gap between the operating parameters of the main Bluetooth circuit and the operating parameters of the sub-Bluetooth circuit exceeds a predetermined value. When the level is reached, the role of the main Bluetooth circuit is handed over to other secondary Bluetooth circuits.

For another example, the main Bluetooth circuit can also intermittently compare its own Bluetooth packet loss rate with the Bluetooth packet loss rate of other secondary Bluetooth circuits, and when the Bluetooth packet loss rate of other secondary Bluetooth circuits is relatively low, the main Bluetooth The role of the Bluetooth circuit is handed over to other secondary Bluetooth circuits.

In practice, the main Bluetooth circuit can also take the aforementioned various evaluation conditions into consideration together to determine whether to hand over the role of the main Bluetooth circuit to other secondary Bluetooth circuits.

Alternatively, the secondary Bluetooth circuit can also use various methods to determine whether the primary Bluetooth circuit is disabled or missing, and when it is determined that the primary Bluetooth circuit is disabled or missing, the secondary Bluetooth circuit replaces the old primary Bluetooth circuit, and actively continues to play the role of the primary Bluetooth circuit. The role of the bluetooth circuit.

As mentioned above, in practical applications, the data type of the packet transmitted by the remote Bluetooth device 102 to the multi-member Bluetooth device 100 may be different due to changes in the operation situation at that time. For example, when the user controls the remote Bluetooth device 102 to use the multi-member Bluetooth device 100 to play audio and video data, the packet sent by the remote Bluetooth device 102 to the multi-member Bluetooth device 100 is usually multimedia data with a serial code. However, when the user uses the remote Bluetooth device 102 to send the data required to update the firmware or program version to the multi-member Bluetooth device 100, the packet sent by the remote Bluetooth device 102 to the multi-member Bluetooth device 100 usually does not have Serial code non-multimedia data, such as program data, update modules, etc. In the case where the data type of the packet sent by the remote Bluetooth device 102 changes, but the roles of the primary Bluetooth circuit and the secondary Bluetooth circuit are not exchanged, if the matching operation between the primary Bluetooth circuit or the secondary Bluetooth circuit cannot be adjusted adaptively, it is possible that Causes the main Bluetooth circuit to be unable to effectively confirm whether the secondary Bluetooth circuit is missing packets; may cause the main Bluetooth circuit to consume faster power, generate higher heat, and/or higher temperature; may reduce the comfort of the main Bluetooth circuit; may reduce the multi-membership The overall operation performance of the Bluetooth device 100 and/or the reduction of standby time; it may cause inconvenience in the use of the multi-member Bluetooth device 100; it may also cause the secondary Bluetooth circuit to easily miss packets and be unable to complete specific operations (eg, firmware update). question.

In order to avoid the aforementioned problems, the multi-member Bluetooth device 100 will dynamically monitor whether the data type of the packets transmitted from the remote Bluetooth device 102 changes during the operation.

The operation of the multi-member Bluetooth device 100 will be further described below with reference to FIGS. 2 to 3 . 2 to 3 are simplified flowcharts of the operation method of the multi-member Bluetooth device 100 in a first embodiment of the present invention.

In the flowcharts of FIGS. 2 to 3 , the process in the column to which a specific device belongs represents the process performed by the specific device. For example, the part marked in the "Main Bluetooth Circuit" field is the process performed by the member circuit that acts as the main Bluetooth circuit; The flow performed by the circuit, the aforementioned logic is also applicable to other subsequent flow charts.

As shown in FIG. 2 , when the user uses the multi-member Bluetooth device 100 to receive a packet (eg, audio and video data) with a sequence number sent by the remote Bluetooth device 102 , the multi-member Bluetooth device 100 will first perform the process 202 , to obtain the Bluetooth connection parameters required for receiving the packets sent by the remote Bluetooth device 102 . In practice, the multi-member Bluetooth device 100 can use any member circuit to first connect with the remote Bluetooth device 102 to obtain relevant Bluetooth connection parameters, and then use the member circuit to transmit the obtained Bluetooth connection parameters to other member circuits. .

For example, in one embodiment, the first control circuit 117 of the first Bluetooth circuit 110 can control the first Bluetooth communication circuit 111 to establish a Bluetooth connection with the remote Bluetooth device 102 in the process 202, and connect the first Bluetooth circuit 110 to the Bluetooth connection. The Bluetooth connection parameters between the remote Bluetooth devices 102 are transmitted to other member circuits such as the second Bluetooth circuit 120 through the first Bluetooth communication circuit 111, so that other member circuits can then use the Bluetooth connection parameters to receive the remote Bluetooth device. 102 packets sent out.

For another example, in another embodiment, the second control circuit 127 of the second Bluetooth circuit 120 can control the second Bluetooth communication circuit 121 to establish a Bluetooth connection with the remote Bluetooth device 102 in the process 202, and connect the second Bluetooth circuit The Bluetooth connection parameters between 120 and the remote Bluetooth device 102 are transmitted to other member circuits through the second Bluetooth communication circuit 121, so that other member circuits can then use the Bluetooth connection parameters to receive packets sent by the remote Bluetooth device 102 . On the other hand, the second control circuit 127 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 second Bluetooth in the process 202 . The communication circuit 121 transmits the data to the first Bluetooth circuit 110 so that the first Bluetooth circuit 110 can perform bidirectional packet transmission with the remote Bluetooth device 102 in the subsequent process. Afterwards, the second Bluetooth circuit 120 is changed to only receive the packets sent by the remote Bluetooth device 102 in one direction, and will not transmit the packets to the remote Bluetooth device 102 , so as to avoid the problem of packet conflict in the remote Bluetooth device 102 .

For the convenience of description, it is assumed that the member circuit currently selected to process the main work of receiving packets sent by the remote Bluetooth device 102 in the multi-member Bluetooth device 100 is the first Bluetooth circuit 110, and other member circuits (for example, The aforementioned second Bluetooth circuit 120 and the third Bluetooth circuit 130) play the role of secondary Bluetooth circuits.

In the process 204 , the first Bluetooth circuit 110 can notify other member circuits (eg, the aforementioned second Bluetooth circuit 120 and third Bluetooth circuit 130 ) of the multi-member Bluetooth device 100 through the first Bluetooth communication circuit 111 . The first Bluetooth circuit 110 plays the role of the master Bluetooth circuit, and instructs other member circuits to play the role of the secondary Bluetooth circuit, and operates in the sniffing mode. That is, the first bluetooth circuit 110 will be responsible for processing the main work of receiving the packets sent by the remote bluetooth device 102, and other member circuits can only sniff the packets sent by the remote bluetooth device 102, but are not allowed to transmit commands and data. , or other related packets to the remote Bluetooth device 102 .

Next, when the secondary Bluetooth circuit operates in the sniffing mode, the first Bluetooth circuit 110 will perform the process 206 .

In the process 206 , the first control circuit 117 of the first Bluetooth circuit 110 uses the first Bluetooth communication circuit 111 to receive the packet with the serial code from the remote Bluetooth device 102 , but the first control circuit 117 does not transmit the packet through the first Bluetooth device 102 . The Bluetooth communication circuit 111 forwards the packets from the remote Bluetooth device 102 to other secondary Bluetooth circuits.

During operation, the first control circuit 117 can use the Bluetooth connection parameters obtained in the process 202 to perform packet transmission with the remote Bluetooth device 102 through the first Bluetooth communication circuit 111 to receive various data from the remote Bluetooth device 102 . packets, or send various packets to the remote Bluetooth device 102 . As can be seen from the operation description of the aforementioned process 202, the Bluetooth connection parameters used when the first Bluetooth circuit 110 and the remote Bluetooth device 102 perform packet transmission may be obtained by the first Bluetooth circuit 110 itself, or may be other member circuits. (eg, from the second Bluetooth circuit 120).

Each time the first Bluetooth communication circuit 111 receives a packet from the remote Bluetooth device 102 , the first control circuit 117 of the first Bluetooth circuit 110 can transmit a corresponding acknowledgement message through the first Bluetooth communication circuit 111 to the remote Bluetooth device 102 . If the remote Bluetooth device 102 does not receive the corresponding acknowledgment information of the specific packet, it will retransmit the specific packet to the first Bluetooth communication circuit 111 . In practice, various suitable 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, when the main Bluetooth circuit receives the packets sent by the remote Bluetooth device 102 , the other member circuits that play the role of the secondary Bluetooth circuit will perform the process 208 and continue to operate in the sniffing mode to sniff the packets sent by the remote Bluetooth device 102 . the packet with the sequence code. For example, in the process 208 , the second control circuit 127 of the second Bluetooth circuit 120 can use the second Bluetooth communication circuit 121 to sniff the packets sent by the remote Bluetooth device 102 according to the Bluetooth connection parameters obtained in the process 202 . In one embodiment, the second Bluetooth communication circuit 121 can sniff all Bluetooth packets sent by the remote Bluetooth device 102 . In another embodiment, the second Bluetooth communication circuit 121 only sniffs the Bluetooth packets to be transmitted by the remote Bluetooth device 102 to the first Bluetooth circuit 110 , but does not sniff the Bluetooth packets to be transmitted by the remote Bluetooth device 102 to the multi-member Bluetooth Bluetooth packets of devices other than device 100. It can be seen from the description of the aforementioned process 202 that the Bluetooth connection parameters used by the second Bluetooth communication circuit 121 to sniff the packets sent by the remote Bluetooth device 102 may be obtained by the second Bluetooth circuit 120 itself, or may be obtained by other members. circuit (eg, the first Bluetooth circuit 110 ).

The secondary Bluetooth circuit may perform the process 210 each time after sniffing the packet sent by the remote Bluetooth device 102 . In the process 210 , the secondary Bluetooth circuit transmits a notification message corresponding to the sniffed packet to the primary Bluetooth circuit, but does not transmit any confirmation message to the remote Bluetooth device 102 . For example, every time the second Bluetooth circuit 120 sniffs a packet sent by the remote Bluetooth device 102 , the second control circuit 127 may perform the process 210 to transmit a corresponding notification message to the first Bluetooth circuit through the second Bluetooth communication circuit 121 The first Bluetooth communication circuit 111 of 110 , but the second control circuit 127 does not transmit any confirmation information to the remote Bluetooth device 102 through the second Bluetooth communication circuit 121 .

In practice, the secondary Bluetooth circuit can also be changed to perform the aforementioned process 210 only when the primary Bluetooth circuit inquires whether the secondary Bluetooth circuit has sniffed a specific packet sent by the remote Bluetooth device 102 .

In other words, during the period when the secondary Bluetooth circuit is operating in the sniffing mode, although the primary Bluetooth circuit and the other secondary Bluetooth circuits both receive the packets sent by the remote Bluetooth device 102 in this embodiment, only the primary Bluetooth circuit receives the packets. The confirmation information is sent to the remote Bluetooth device 102, and other secondary Bluetooth circuits will not transmit the confirmation information to the remote Bluetooth device 102, so as to avoid misjudgment caused by the remote Bluetooth device 102. Since the remote Bluetooth device 102 does not know that the second Bluetooth circuit 120 is sniffing the packets sent by the remote Bluetooth device 102, and the second Bluetooth circuit 120 does not transmit the corresponding confirmation information to the remote Bluetooth device 102, the second Bluetooth circuit Between 120 and the remote Bluetooth device 102, no packet handshake procedure is performed for the packets sent by the remote Bluetooth device 102.

In this embodiment, the purpose of transmitting the aforementioned notification information to the first Bluetooth circuit 110 by the second Bluetooth circuit 120 is not to perform a packet handshake procedure with the first Bluetooth circuit 110 , but to allow the first Bluetooth circuit 110 to Check whether the second Bluetooth circuit 120 misses any packets sent by the remote Bluetooth device 102 .

In addition, the purpose of transmitting the aforementioned notification information to the first Bluetooth circuit 110 by the second Bluetooth circuit 120 is not for the first Bluetooth circuit 110 to determine whether to transmit the aforementioned confirmation information to the remote Bluetooth device 102 accordingly. The first control circuit 117 in this embodiment does not check whether the first Bluetooth communication circuit 111 has received the aforementioned notification information from the second Bluetooth circuit 120 before transmitting the aforementioned confirmation information to the remote Bluetooth device 102 . Therefore, the timing for the first Bluetooth communication circuit 111 to transmit the confirmation information to the remote Bluetooth device 102 has nothing to do with whether the first Bluetooth communication circuit 111 has received the aforementioned notification information from the second Bluetooth circuit 120 .

In practice, the aforementioned notification information transmitted 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 second control circuit 127 can retrieve the corresponding serial code from the specific Bluetooth packet, and combine the serial code with the available serial code. The device code or device identification data for identifying the second Bluetooth circuit 120 is combined or encoded together into notification information corresponding to the specific Bluetooth packet. For another example, the second control circuit 127 can 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 notification information corresponding to the specific Bluetooth packet.

As can be seen from the foregoing description, in the process of sending a plurality of Bluetooth packets successively by the remote Bluetooth device 102, each sub-Bluetooth circuit will repeat the aforementioned process 208 and process 210 under normal circumstances, and then transmit a plurality of notification messages to the first Bluetooth circuit. A Bluetooth circuit 110 . For example, the second Bluetooth circuit 120 may repeat the process 208 and the process 210 to transmit a plurality of notification messages corresponding to the plurality of Bluetooth packets sent by the remote Bluetooth device 102 to the first Bluetooth circuit 110 .

In actual operation, each sub-Bluetooth circuit may occasionally miss some packets sent by the remote Bluetooth device 102, and the packets and the number of packets missed by different sub-Bluetooth circuits may also be different. Therefore, the main Bluetooth circuit can perform the process 212 intermittently or periodically to determine whether the individual secondary Bluetooth circuit misses receiving the packets sent by the remote Bluetooth device 102 according to the plurality of notification messages sent from the individual secondary Bluetooth circuit.

For example, in the process 212 , the first control circuit 117 of the first Bluetooth circuit 110 can check whether the second Bluetooth circuit 120 misses the transmission from the remote Bluetooth device 102 according to the plurality of notification information transmitted from the second Bluetooth circuit 120 . partial packets. The first packet parsing circuit 113 can parse out a plurality of sequence codes or a plurality of packet identification data from a plurality of notification messages transmitted from the second Bluetooth circuit 120 . The first control circuit 117 can check whether the serial codes or the packet identification data have continuity, so as to check whether the second Bluetooth circuit 120 misses receiving part of the packets sent by the remote Bluetooth device 102 . If the aforementioned sequence code or packet identification data is discontinuous, the first control circuit 117 can determine that the second Bluetooth circuit 120 has missed receiving the packet corresponding to the missing sequence code or packet identification data. According to the missing sequence code or the packet identification data, the first control circuit 117 can further define which packets are missed by the second Bluetooth circuit 120 .

As mentioned above, a packet handshake mechanism is adopted between the first Bluetooth circuit 110 and the remote Bluetooth device 102 , so 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 first control circuit 117 detects that a certain pair of bluetooth circuits has missed some packets sent by the remote bluetooth device 102 , the process 214 will be executed, and the packets missed by the pair of bluetooth circuits will be transmitted through the first bluetooth communication circuit 111 . to the pair of bluetooth circuits.

For example, when the first control circuit 117 detects that the second Bluetooth circuit 120 has missed receiving a specific packet sent by the remote Bluetooth device 102 , the first control circuit 117 may perform the process 214 to send the first Bluetooth communication circuit 111 to the first control circuit 111 . The packets missed by the two Bluetooth circuits 120 are transmitted to the second Bluetooth circuit 120 .

In this case, the second Bluetooth circuit 120 will perform the process 216 to receive the packets transmitted from the first Bluetooth circuit 110 through the second Bluetooth communication circuit 121 . In other words, when the second Bluetooth circuit 120 is operating in the sniffing mode, the second control circuit 127 can use the second Bluetooth communication circuit 121 to receive packets from the first Bluetooth circuit 110 , so as to obtain information about the remote Bluetooth device 102 . A packet sent out but missed by the second Bluetooth communication circuit 121 .

By repeating the above-mentioned operations, the second Bluetooth circuit 120 can make up all the missing packets with the assistance of the first Bluetooth circuit 110 . Likewise, the first Bluetooth circuit 110 can assist other secondary Bluetooth circuits to fill in the missing packets by using the aforementioned method.

During the period when the secondary Bluetooth circuit operates in the sniffing mode, if the secondary Bluetooth circuit needs to transmit commands, data, or related packets to the remote Bluetooth device 102, it must forward the commands, data, or related packets to the remote Bluetooth device 102 through the primary Bluetooth circuit. The terminal Bluetooth device 102 . For example, if the second Bluetooth circuit 120 needs to transmit commands, data, or related packets to the remote Bluetooth device 102, the above-mentioned commands, data, or related packets must be transmitted through the second Bluetooth communication circuit 121 to the device that plays the role of the main Bluetooth circuit. The first Bluetooth circuit 110 is then forwarded by the first Bluetooth circuit 110 to the remote Bluetooth device 102 , so as to avoid the problem of packet conflict in the remote Bluetooth device 102 .

In other words, while the secondary Bluetooth circuit is operating in the sniffing mode, all member circuits of the multi-member Bluetooth device 100 will receive packets sent by the remote Bluetooth device 102, but only the primary Bluetooth circuit is allowed to transmit commands, data, or other related packets to Remote Bluetooth device 102 .

It can be seen from the foregoing description that a packet handshake mechanism is used between the first Bluetooth circuit 110 and the remote Bluetooth device 102 to avoid the occurrence of missing packets, and the first Bluetooth communication circuit 111 transmits the confirmation information to the timing sequence of the remote Bluetooth device 102 , regardless of whether the first Bluetooth circuit 110 has received the aforementioned notification information from the second Bluetooth circuit 120 .

Therefore, other secondary Bluetooth circuits transmit corresponding notification information to the first Bluetooth circuit 110 when receiving the packets sent by the remote Bluetooth device 102, and will not interfere or delay the communication between the first Bluetooth circuit 110 and the remote Bluetooth device 102. The packet handshake process between the two will not cause additional operational burden to the first Bluetooth circuit 110 to perform the aforementioned packet handshake process.

On the other hand, since other secondary Bluetooth circuits in the multi-member Bluetooth device 100 (eg, the aforementioned second Bluetooth circuit 120 and third Bluetooth circuit 130 ) will sniff the packets sent by the remote Bluetooth device 102, each secondary Bluetooth circuit Under normal circumstances, the circuit will receive most of the packets sent by the remote Bluetooth device 102 . Therefore, the first Bluetooth circuit 110, which is the main Bluetooth circuit, only needs to transmit the packets missed by the individual secondary Bluetooth circuits to the corresponding secondary Bluetooth circuit, and does not need to transmit all the packets sent by the remote Bluetooth device 102 to each Secondary Bluetooth circuit.

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

In addition, the data transmission bandwidth requirement between the main Bluetooth circuit and other member circuits can be greatly reduced, 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 also be used between the main Bluetooth circuit and other sub-Bluetooth circuits to ensure that different member circuits can synchronously play the multimedia data transmitted from the remote Bluetooth device 102, thereby avoiding the occurrence of differences. The playback timing of member circuits is inconsistent.

As can be seen from the foregoing description, while the secondary Bluetooth circuit is operating in the sniffing mode, although the roles of the primary Bluetooth circuit and the secondary Bluetooth circuit do not change, the data type of the packet transmitted by the remote Bluetooth device 102 to the multi-member Bluetooth device 100 is not. It may be different because the user's operating situation for the multi-member Bluetooth device 100 changes at that time. When the data type of the packet sent by the remote Bluetooth device 102 changes, if the matching operation between the main Bluetooth circuit or the secondary Bluetooth circuit cannot be adjusted adaptively, the primary Bluetooth circuit may not be able to effectively confirm whether the secondary Bluetooth circuit misses packets, As a result, the secondary Bluetooth circuit is prone to missing packets and cannot complete specific operations (eg, firmware update), and/or reduces the overall operational performance of the multi-member Bluetooth device 100 . In some cases, the service life or standby time of the secondary Bluetooth circuit or the primary Bluetooth circuit may also be shortened. In addition, for some traditional multi-member Bluetooth devices implemented by using wireless Bluetooth headsets, if the user wants to change the operation situation of the multi-member Bluetooth device, the user usually has to temporarily remove the multi-member Bluetooth device and put it on the Certain operations (eg, updating the firmware of a multi-member Bluetooth device) can only be performed in a specific device (eg, an earphone charging stand or an earphone charging box), which obviously causes inconvenience to the user in operation.

In this embodiment, as shown in FIG. 3 , during the period when the secondary Bluetooth circuit operates in the sniffing mode, the first Bluetooth circuit 110 acting as the primary Bluetooth circuit also performs the process 302 intermittently to check the remote Bluetooth device 102 The data type of the incoming packet. For example, in the process 302, the first control circuit 117 of the first Bluetooth circuit 110 can use the first packet parsing circuit 113 to parse the packets received by the first Bluetooth communication circuit 111 (that is, the packets transmitted from the remote Bluetooth device 102). ) and check the data type of the packet. In practice, the first control circuit 117 can read the content of the sequence number field in the packet transmitted from the remote Bluetooth device 102 to determine whether the data type of the packet belongs to the data with the sequence number, It is still data that does not have a serial number.

Next, the first control circuit 117 may perform the process 304 to determine whether the data type of the packet transmitted from the remote Bluetooth device 102 has changed. In practice, the first control circuit 117 can temporarily store the data type of the packet previously transmitted by the remote Bluetooth device 102 in a suitable storage circuit (not shown in the figure), so as to be compatible with the data type currently transmitted by the remote Bluetooth device 102 . The data types of the packets are compared. In the process 304, the first control circuit 117 can compare the data type of the packet currently transmitted by the remote Bluetooth device 102 with the data type of the previously transmitted packet to determine whether the data type of the packet transmitted by the remote Bluetooth device 102 has a serial code. data becomes data that does not have a serial number.

If the data type of the packet currently transmitted by the remote Bluetooth device 102 still belongs to the data with the serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has not changed. In this case, the first Bluetooth circuit 110 can repeat the operations of the aforementioned process 206 , the process 212 , and the process 214 , while the second Bluetooth circuit 120 can continue to operate in the sniffing mode.

On the contrary, if the data type of the packet currently transmitted by the remote Bluetooth device 102 becomes data without serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has changed. When the data type of the packet transmitted from the remote Bluetooth device 102 becomes the data without the serial code, it is difficult for the main Bluetooth circuit to effectively confirm whether the secondary Bluetooth circuit misses the packet, which may cause the secondary Bluetooth circuit to easily miss the packet and be unable to complete the specific operation. (for example, firmware updates). In this case, the first Bluetooth circuit 110 can perform the process 306 .

In the process 306, the first control circuit 117 of the first Bluetooth circuit 110 generates a first mode switching instruction for instructing the second Bluetooth circuit 120 to switch from the sniffing mode to the indirect receiving mode, and communicates via the first Bluetooth The circuit 111 transmits the first mode switching instruction to the second Bluetooth circuit 120 .

In the process 308 , the second Bluetooth communication circuit 121 will receive the first mode switching instruction from the first Bluetooth circuit 110 , and the second control circuit 127 will change the mode switching instruction of the second Bluetooth circuit 120 according to the first mode switching instruction. The operating mode is switched from sniffing mode to indirect receiving mode.

Next, the first Bluetooth circuit 110 will perform the process 310 , and the second Bluetooth circuit 120 will perform the process 312 .

In the process 310 , the first control circuit 117 of the first Bluetooth circuit 110 uses the first Bluetooth communication circuit 111 to receive the packet without the serial code from the remote Bluetooth device 102 , and receives the packet through the first Bluetooth communication circuit 111 . The received packet is forwarded to the second Bluetooth circuit 120 .

In the process 312 , the second control circuit 127 controls the second Bluetooth circuit 120 to operate in the indirect receiving mode, and uses the second Bluetooth communication circuit 121 to receive the packet without the serial code transmitted from the first Bluetooth circuit 110 . However, when the second Bluetooth circuit 120 operates in the indirect receiving mode, the second control circuit 127 will not use the second Bluetooth communication circuit 121 to sniff the packets sent by the remote Bluetooth device 102 . In other words, when the second Bluetooth circuit 120 operates in the indirect receiving mode, the second Bluetooth circuit 120 indirectly acquires the packets sent by the remote Bluetooth device 102 through the first Bluetooth circuit 110 .

As can be seen from the foregoing description, during the period when the second Bluetooth circuit 120, which plays the role of the secondary Bluetooth circuit, operates in the sniffing mode, the first Bluetooth circuit 110, which plays the role of the main Bluetooth circuit, will intermittently check and determine that the remote Bluetooth device 102 transmits Whether the data type of the packet is changed from data with serial code to data without serial code. As long as the data type of the packet transmitted from the remote Bluetooth device 102 still belongs to the data with the serial code, the first Bluetooth circuit 110 will not instruct the second Bluetooth circuit 120 to switch to the indirect receiving mode. In this case, the first Bluetooth circuit 110 only needs to transmit the packets missed by the second Bluetooth circuit 120 to the second Bluetooth circuit 120, and does not need to forward all the packets sent by the remote Bluetooth device 102 to the second Bluetooth circuit 120. Therefore, the operation burden, power consumption, and heat generation of the first Bluetooth circuit 110 can be reduced, the working time and standby time of the first Bluetooth circuit 110 can be prolonged, and the distance between the first Bluetooth circuit 110 and the second Bluetooth circuit 120 can be reduced. data transmission bandwidth requirements.

The first Bluetooth circuit 110 instructs the second Bluetooth circuit 120 to change the operation mode from sniffing only when the data type of the packet transmitted from the remote Bluetooth device 102 changes from data with a serial code to data without a serial code The mode is switched to the indirect reception mode. In this case, the first Bluetooth circuit 110 will forward all the packets sent by the remote Bluetooth device 102 to the second Bluetooth circuit 120, and the second Bluetooth circuit 120 will stop sniffing the packets sent by the remote Bluetooth device 102, so it can This effectively avoids the situation that the second Bluetooth circuit 120 misses packets. In this way, the problem that the second Bluetooth circuit 120 cannot complete a specific operation (eg, firmware update) due to missing packets can be avoided.

Similarly, the multi-member Bluetooth device 100 can adaptively switch the operation mode of the third Bluetooth circuit 130 according to the change of the data type of the packet transmitted from the remote Bluetooth device 102 according to the aforementioned method.

Therefore, using the above-mentioned operation methods of FIG. 2 and FIG. 3 , the main Bluetooth circuit in the multi-member Bluetooth device 100 can change the data type of the packets transmitted from the remote Bluetooth device 102 from the data with the serial code to the data without the serial code At the time, the operation mode of the secondary Bluetooth circuit is adaptively switched from the sniffing mode to the indirect receiving mode, and the matching operation between the primary Bluetooth circuit and the secondary Bluetooth circuit is changed accordingly. Such a method can effectively avoid the problem that the secondary Bluetooth circuit misses packets and cannot complete a specific operation (eg, firmware update), thereby improving the overall performance of the multi-member Bluetooth device 100 , prolonging the service life of the Bluetooth circuit, or improving user experience.

Furthermore, in some applications in which the multi-member Bluetooth device 100 is implemented by using a wireless Bluetooth headset, the user may suddenly want to update the multi-member Bluetooth device 100 when playing the multimedia data transmitted from the remote Bluetooth device 102 by using the multi-member Bluetooth device 100 . The firmware of the member Bluetooth device 100. In this case, the multi-member Bluetooth device 100 can allow the user to use the multi-member Bluetooth device 100 to play the multimedia data transmitted from the remote Bluetooth device 102 at any time. The multimedia playback operation of the multi-member Bluetooth device 100 is changed to control the remote Bluetooth device 102 to transmit program data or update modules required for updating the firmware of the multi-member Bluetooth device 100 to the multi-member Bluetooth device 100 . More importantly, in the aforementioned switching process of usage scenarios, the user does not need to temporarily remove the multi-member Bluetooth device 100 from the ear and put it into a specific device (for example, the earphone charging stand or the earphone charging box), so The operation convenience of the multi-member Bluetooth device 100 for the user can be significantly improved.

In the aforementioned embodiments of FIGS. 2 to 3 , the multi-member Bluetooth device 100 checks and determines whether the data type of the packet transmitted from the remote Bluetooth device 102 has a serial code during the period when the secondary Bluetooth circuit operates in the sniffing mode. The data becomes data without serial code, and according to the judgment result, it is decided whether to switch the operation mode of the secondary Bluetooth circuit from the sniffing mode to the indirect receiving mode. However, this is only a partial example, rather than limiting the actual implementation of the present invention. In practice, the multi-member Bluetooth device 100 can also dynamically determine whether to switch the secondary Bluetooth circuit according to the change of the data type of the packet transmitted by the remote Bluetooth device 102 during the period when the secondary Bluetooth circuit operates in the indirect receiving mode. operating mode.

For example, FIG. 4 to FIG. 5 are simplified flowcharts of the operation method of the multi-member Bluetooth device 100 in a second embodiment of the present invention.

As shown in FIG. 4 , when the user wants to use the multi-member Bluetooth device 100 to receive packets without serial codes (such as program data, update modules and other non-multimedia data) sent by the remote Bluetooth device 102, the multi-member Bluetooth device 100 The device 100 may first perform the aforementioned process 202 to obtain the Bluetooth connection parameters required for receiving packets sent by the remote Bluetooth device 102 . The foregoing descriptions about the operation of the process 202 in FIG. 2 and the variation of the embodiment are also applicable to the embodiment of FIG. 4 .

For convenience of description, the following also assumes that the first Bluetooth circuit 110 is the member circuit currently selected to process the main work of receiving packets sent by the remote Bluetooth device 102 in the multi-member Bluetooth device 100, and other member circuits (for example, The aforementioned second Bluetooth circuit 120 and the third Bluetooth circuit 130) play the role of secondary Bluetooth circuits.

In the process 404 , the first Bluetooth circuit 110 can notify other member circuits (eg, the aforementioned second Bluetooth circuit 120 and third Bluetooth circuit 130 ) of the multi-member Bluetooth device 100 through the first Bluetooth communication circuit 111 . The first Bluetooth circuit 110 plays the role of the main Bluetooth circuit, and instructs other member circuits to play the role of the secondary Bluetooth circuit, and operates in the indirect receiving mode. That is, the first Bluetooth circuit 110 will be responsible for the main work of receiving the packets sent by the remote Bluetooth device 102, and other member circuits only need to receive the packets forwarded by the first Bluetooth circuit 110 without sniffing the remote The packets sent by the Bluetooth device 102 do not allow other member circuits to transmit commands, data, or other related packets to the remote Bluetooth device 102 .

Next, the first Bluetooth circuit 110 will perform the process 406 while the secondary Bluetooth circuit is operating in the indirect receiving mode.

In the process 406, the first control circuit 117 of the first Bluetooth circuit 110 can use the first Bluetooth communication circuit 111 to receive the packet without the serial code from the remote Bluetooth device 102, and the first control circuit 117 can also use the first Bluetooth communication circuit 111 to receive the packet without the serial code. A Bluetooth communication circuit 111 forwards the packets without serial codes from the remote Bluetooth device 102 to other secondary Bluetooth circuits. For example, the first control circuit 117 can forward the packet without the serial code from the remote Bluetooth device 102 to the second Bluetooth circuit 120 through the first Bluetooth communication circuit 111 .

During operation, the first control circuit 117 can use the Bluetooth connection parameters obtained in the process 202 to perform packet transmission with the remote Bluetooth device 102 through the first Bluetooth communication circuit 111 to receive various data from the remote Bluetooth device 102 . packets, or send various packets to the remote Bluetooth device 102 . As can be seen from the operation description of the aforementioned process 202, the Bluetooth connection parameters used when the first Bluetooth circuit 110 and the remote Bluetooth device 102 perform packet transmission may be obtained by the first Bluetooth circuit 110 itself, or may be other member circuits. (eg, from the second Bluetooth circuit 120).

As mentioned above, various suitable 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.

In the process 408 , the secondary Bluetooth circuit operates in the indirect receiving mode to receive the packet without the sequence code transmitted by the first Bluetooth circuit 110 . During the period when the secondary Bluetooth circuit operates in the indirect receiving mode, the secondary Bluetooth circuit does not sniff the packets sent by the remote Bluetooth device 102 . In addition, during the period when the secondary Bluetooth circuit operates in the sniffing mode, if the secondary Bluetooth circuit needs to transmit commands, data, or related packets to the remote Bluetooth device 102, it must transmit the commands, data, or related packets through the primary Bluetooth circuit. to the remote Bluetooth device 102 .

For example, in the process 408, the second control circuit 127 can control the second Bluetooth circuit 120 to operate in the indirect receiving mode, and use the second Bluetooth communication circuit 121 to receive the packet without the serial code transmitted from the first Bluetooth circuit 110, However, the second Bluetooth communication circuit 121 will not be used to sniff the packets sent by the remote Bluetooth device 102 . That is, when the second Bluetooth circuit 120 operates in the indirect receiving mode, the second Bluetooth circuit 120 indirectly acquires the packet without the serial code sent by the remote Bluetooth device 102 through the first Bluetooth circuit 110 . If the second Bluetooth circuit 120 needs to transmit commands, data, or related packets to the remote Bluetooth device 102 during this period, the above-mentioned commands, data, or related packets must be transmitted to the main Bluetooth circuit through the second Bluetooth communication circuit 121. The first Bluetooth circuit 110 of the role is then forwarded by the first Bluetooth circuit 110 to the remote Bluetooth device 102 to avoid the problem of packet conflict in the remote Bluetooth device 102 .

As shown in FIG. 4 , during the period when the secondary Bluetooth circuit operates in the indirect receiving mode, the primary Bluetooth circuit also performs the process 410 intermittently to check the data type of the packets transmitted from the remote Bluetooth device 102 . For example, the first control circuit 117 of the first Bluetooth circuit 110 can use the first packet parsing circuit 113 to parse the packets received by the first Bluetooth communication circuit 111 in the process 410 (that is, the packets transmitted from the remote Bluetooth device 102 ). ) to get the data type of the packet. In practice, the first control circuit 117 can read the content of the serial code field in the packet transmitted from the remote Bluetooth device 102, or the content of other predetermined fields, so as to determine whether the data type of the packet belongs to the serial code field. data, or data that does not have a serial code.

Next, the first control circuit 117 in this embodiment can perform the process 412 to determine whether the data type of the packet transmitted from the remote Bluetooth device 102 is changed. In practice, the first control circuit 117 can temporarily store the data type of the packet previously transmitted by the remote Bluetooth device 102 in a suitable storage circuit (not shown in the figure), so as to be compatible with the data type currently transmitted by the remote Bluetooth device 102 . The data types of the packets are compared.

If the data type of the packet currently transmitted by the remote Bluetooth device 102 still belongs to the data without the serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has not changed. In this case, the first Bluetooth circuit 110 can repeat the operations of the aforementioned process 406 , the process 410 , and the process 412 , while the second Bluetooth circuit 120 can continue to operate in the indirect receiving mode.

On the contrary, if the data type of the packet currently transmitted by the remote Bluetooth device 102 is changed to data with a serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has changed. In this case, the first Bluetooth circuit 110 may perform the process 502 in FIG. 5 .

In the process 502, the first control circuit 117 of the first Bluetooth circuit 110 generates a second mode switching instruction for instructing the second Bluetooth circuit 120 to switch from the indirect receiving mode to the sniffing mode, and communicates through the first Bluetooth The circuit 111 transmits the second mode switching instruction to the second Bluetooth circuit 120 .

In the process 504 , the second Bluetooth communication circuit 121 receives the second mode switching instruction from the first Bluetooth circuit 110 , and the second control circuit 127 sends the second mode switching instruction to the second Bluetooth circuit 120 according to the second mode switching instruction. The operating mode is switched from the indirect reception mode to the sniffing mode.

Next, the first Bluetooth circuit 110 will perform the process 506 , and the second Bluetooth circuit 120 will perform the process 508 .

In the process 506 , the first control circuit 117 of the first Bluetooth circuit 110 uses the first Bluetooth communication circuit 111 to receive the packet with the serial code from the remote Bluetooth device 102 , but the first control circuit 117 does not transmit the packet through the first Bluetooth device 102 . The Bluetooth communication circuit 111 forwards the packets transmitted from the remote Bluetooth device 102 to the second Bluetooth circuit 120 .

In the process 508, the second control circuit 127 of the second Bluetooth circuit 120 can use the second Bluetooth communication circuit 121 to sniff the serial code sent by the remote Bluetooth device 102 according to the Bluetooth connection parameters obtained in the process 202. packet. In one embodiment, the second Bluetooth communication circuit 121 can sniff all Bluetooth packets sent by the remote Bluetooth device 102 . In another embodiment, the second Bluetooth communication circuit 121 only sniffs the Bluetooth packets to be transmitted by the remote Bluetooth device 102 to the first Bluetooth circuit 110, but does not sniff the remote Bluetooth device 102 to transmit to the multi-member Bluetooth Bluetooth packets of devices other than device 100. It can be seen from the description of the aforementioned process 202 that the Bluetooth connection parameters used by the second Bluetooth communication circuit 121 to sniff the packets sent by the remote Bluetooth device 102 may be obtained by the second Bluetooth circuit 120 itself, or may be obtained by other members. circuit (eg, the first Bluetooth circuit 110 ).

Next, the multi-member Bluetooth device 100 may perform the same operations as the aforementioned processes 210 to 216 in FIG. 2 .

As can be seen from the foregoing description, during the period when the second Bluetooth circuit 120, which plays the role of the secondary Bluetooth circuit, operates in the indirect receiving mode, the first Bluetooth circuit 110, which plays the role of the main Bluetooth circuit, intermittently checks and determines that the remote Bluetooth device 102 is transmitting. Whether the data type of the incoming packet has changed from data without serial code to data with serial code. As long as the data type of the packet transmitted from the remote Bluetooth device 102 still belongs to the data without serial code, the first Bluetooth circuit 110 will not instruct the second Bluetooth circuit 120 to switch to the sniffing mode, so as to avoid difficulty in confirming the second Whether the Bluetooth circuit 120 misses the packets sent by the remote Bluetooth device 102 .

The first Bluetooth circuit 110 instructs the second Bluetooth circuit 120 to receive the operation mode from indirect only when the data type of the packet transmitted from the remote Bluetooth device 102 changes from data without a serial code to data with a serial code Switch the communication mode to the sniffing mode. After the second bluetooth circuit 120 switches to the sniffing mode, the first bluetooth circuit 110 only needs to transmit the packets missed by the second bluetooth circuit 120 to the second bluetooth circuit 120 without forwarding all the packets sent by the remote bluetooth device 102 The packets are sent to the second Bluetooth circuit 120, so the operation burden, power consumption, and heat generation of the first Bluetooth circuit 110 can be reduced, the working time and standby time of the first Bluetooth circuit 110 can be prolonged, and the first Bluetooth circuit 110 can be reduced. Data transmission bandwidth requirements with the second Bluetooth circuit 120 .

Similarly, the multi-member Bluetooth device 100 can adaptively switch the operation mode of the third Bluetooth circuit 130 according to the change of the data type of the packet transmitted from the remote Bluetooth device 102 according to the aforementioned method.

4 and 5, the main Bluetooth circuit in the multi-member Bluetooth device 100 can change the data type of the packets transmitted from the remote Bluetooth device 102 from data without a serial code to data with a serial code At the same time, the operation mode of the secondary Bluetooth circuit is adaptively switched from the indirect receiving mode to the sniffing mode, and the matching operation between the primary Bluetooth circuit and the secondary Bluetooth circuit is changed accordingly. Management mechanisms such as load balancing, power consumption balancing, or heat balancing are implemented among the Bluetooth circuits, so that the overall performance of the multi-member Bluetooth device 100 can be improved, the service life of the Bluetooth circuits can be prolonged, or the user experience can be improved.

Please refer to FIG. 6 to FIG. 7 , which are simplified flowcharts of the operation method of the multi-member Bluetooth device 100 in a third embodiment of the present invention.

In the embodiments of FIGS. 6 and 7 , the first Bluetooth circuit 110 acting as the primary Bluetooth circuit also performs the process 410 intermittently to check the remote Bluetooth device 102 during the period when the secondary Bluetooth circuit operates in the indirect receiving mode. The data type of the incoming packet. However, the first Bluetooth circuit 110 in this embodiment will not perform the aforementioned process 412 after performing the process 410, but will perform the process 612 in FIG. 6 to generate and transmit a corresponding data type notification to the individual Secondary Bluetooth circuit.

For example, in the process 612, the first control circuit 117 can generate a data type notification corresponding to the data type of the packet currently transmitted from the remote Bluetooth device 102, and transmit the data type notification through the first Bluetooth communication circuit 111 to All secondary Bluetooth circuits. In practice, the aforementioned notification of data types can be implemented in various suitable message formats.

In the process 614 , the secondary Bluetooth circuit receives the data type notification from the first Bluetooth circuit 110 , and determines whether the data type of the packet transmitted from the remote Bluetooth device 102 is changed accordingly. For example, the second Bluetooth circuit 120 can receive the data type notification from the first Bluetooth circuit 110 through the second Bluetooth communication circuit 121 in the process 614, and the second control circuit 127 can determine the remote Bluetooth device according to the data type notification 102 Whether the data type of the incoming packet has changed. In practice, the second control circuit 127 can notify the data type previously transmitted by the first Bluetooth circuit 110 and temporarily store it in an appropriate storage circuit (not shown in the figure), so as to be compatible with the data currently transmitted by the first Bluetooth circuit 110 . Type notifications to compare.

If the current data type notification shows that the data type of the packet of the remote Bluetooth device 102 still belongs to the data without the serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has not changed. In this case, the second Bluetooth circuit 120 can repeat the operation of the aforementioned process 408 to continue to operate in the indirect receiving mode.

On the contrary, if the current data type notification indicates that the data type of the packet of the remote Bluetooth device 102 is changed to data with a serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has changed. In this case, the second control circuit 127 can perform the process 616 to generate a second mode switching request, and transmit the aforementioned second mode switching request to the first Bluetooth circuit 110 through the second Bluetooth communication circuit 121 .

In the process 618 , the first Bluetooth circuit 110 receives the second mode switching request from the second Bluetooth circuit 120 through the first Bluetooth communication circuit 111 .

Next, the first Bluetooth circuit 110 will perform the process 702 in FIG. 7 . In the process 702, the first control circuit 117 of the first Bluetooth circuit 110 determines whether to allow the second Bluetooth circuit 120 to switch the operation mode. In this embodiment, after receiving the aforementioned second mode switching request, the first control circuit 117 can determine whether to allow the second Bluetooth circuit 120 to switch the operation mode according to a predetermined rule, and perform corresponding follow-up operations according to the judgment result. Process flow.

If the first control circuit 117 determines that the second Bluetooth circuit 120 is not allowed to switch the operation mode, the process 704 may be performed. On the contrary, if the first control circuit 117 decides to allow the second Bluetooth circuit 120 to switch the operation mode after judgment, the aforementioned process 502 can be performed.

Since the first Bluetooth circuit 110 allows the second Bluetooth circuit 120 to switch the operation mode, the second Bluetooth circuit 120 can switch from the indirect receiving mode to the sniffing mode, and then the second Bluetooth circuit 120 will sniff the remote Bluetooth by itself The packets sent by the device 102 , so the first Bluetooth circuit 110 does not need to forward the packets sent by the remote Bluetooth device 102 to the second Bluetooth circuit 120 . As a result, the computing load, power consumption, or heat generation of the second Bluetooth circuit 120 may increase, but the data bandwidth requirement between the first Bluetooth circuit 110 and the second Bluetooth circuit 120 can be reduced, and the first Bluetooth circuit 110 can also be reduced. Operation load, power consumption, or heat generation of the Bluetooth circuit 110 .

Therefore, after receiving the aforementioned second mode switching request, the first control circuit 117 can evaluate whether there are factors that are not suitable for the second Bluetooth circuit 120 to switch the operation mode, and if not, allow the second Bluetooth circuit 120 to switch the operation mode . For example, the first control circuit 117 may allow the second Bluetooth circuit 120 when the computing load of the second Bluetooth circuit 120 is lower than a predetermined level, the remaining power is higher than a predetermined threshold, and/or the temperature is lower than a predetermined temperature. Circuit 120 switches operating modes. For another example, the first control circuit 117 can only allow the second Bluetooth circuit 110 when the computing load of the first Bluetooth circuit 110 is higher than a predetermined level, the remaining power is lower than a predetermined threshold, and/or the temperature is higher than a predetermined temperature. The Bluetooth circuit 120 switches the operation mode.

In the process 704 , the first control circuit 117 may generate a rejection message indicating that the first Bluetooth circuit 110 does not allow the second Bluetooth circuit 120 to switch the operation mode, and transmit the rejection message to the second Bluetooth circuit through the first Bluetooth communication circuit 111 120.

In the process 706 , the second Bluetooth circuit 120 may receive the rejection information from the first Bluetooth circuit 110 through the second Bluetooth communication circuit 121 . In this case, the second control circuit 127 will control the second Bluetooth circuit 120 to continue to operate in the indirect receiving mode according to the indication of the rejection information, and repeat the operation of the aforementioned process 408 .

In the process 502 , the first control circuit 117 generates a second mode switching instruction for instructing the second Bluetooth circuit 120 to switch from the indirect receiving mode to the sniffing mode, and switches the second mode to the second mode through the first Bluetooth communication circuit 111 The switching instruction is transmitted to the second Bluetooth circuit 120 .

In the process 504 , the second Bluetooth communication circuit 121 receives the second mode switching instruction from the first Bluetooth circuit 110 , and the second control circuit 127 sends the second mode switching instruction to the second Bluetooth circuit 120 according to the second mode switching instruction. The operating mode is switched from the indirect reception mode to the sniffing mode.

Next, the multi-member Bluetooth device 100 may perform the same operations as the aforementioned process 506 , process 508 , and processes 210 to 216 in FIG. 5 .

Please note that the aforementioned first control circuit 117 first performs the determination procedure of the process 702, and then performs the operation of the process 502 after it is determined that the second Bluetooth circuit 120 can be allowed to switch the operation mode, which is only an example, and does not limit the actual implementation of the present invention. Way. In practice, after receiving the aforementioned second mode switching request, the first control circuit 117 may skip the judgment procedure of the aforementioned flow 702 and directly perform the flow 502 .

As can be seen from the foregoing description, when the second Bluetooth circuit 120 operates in the indirect receiving mode, the first Bluetooth circuit 110 will intermittently check the data type of the packets transmitted from the remote Bluetooth device 102, and generate a corresponding data type notification , and the second Bluetooth circuit 120 indirectly determines whether the data type of the packet sent by the remote Bluetooth device 102 has changed according to the data type notification generated by the first Bluetooth circuit 110 . As long as the second Bluetooth circuit 120 determines that the data type of the packet sent by the remote Bluetooth device 102 is still data without a serial code, the first Bluetooth circuit 110 will not instruct the second Bluetooth circuit 120 to switch to the sniffing mode to avoid receiving It is difficult to confirm whether the second Bluetooth circuit 120 misses the packet sent by the remote Bluetooth device 102.

Only when the second Bluetooth circuit 120 determines that the data type of the packet sent by the remote Bluetooth device 102 has changed from data without a serial code to data with a serial code, will the first Bluetooth circuit 110 instruct the second Bluetooth circuit 120 to The operating mode is switched from the indirect reception mode to the sniffing mode. After the second bluetooth circuit 120 switches to the sniffing mode, the first bluetooth circuit 110 only needs to transmit the packets missed by the second bluetooth circuit 120 to the second bluetooth circuit 120 without forwarding all the packets sent by the remote bluetooth device 102 The packets are sent to the second Bluetooth circuit 120, so the operation burden, power consumption, and heat generation of the first Bluetooth circuit 110 can be reduced, the working time and standby time of the first Bluetooth circuit 110 can be prolonged, and the first Bluetooth circuit 110 can be reduced. Data transmission bandwidth requirements with the second Bluetooth circuit 120 .

Similarly, the multi-member Bluetooth device 100 can adaptively switch the operation mode of the third Bluetooth circuit 130 according to the change of the data type of the packet transmitted from the remote Bluetooth device 102 according to the aforementioned method.

6 and 7, the main Bluetooth circuit in the multi-member Bluetooth device 100 can change the data type of the packets transmitted from the remote Bluetooth device 102 from data without a serial code to data with a serial code At the same time, the operation mode of the secondary Bluetooth circuit is adaptively switched from the indirect receiving mode to the sniffing mode, and the matching operation between the primary Bluetooth circuit and the secondary Bluetooth circuit is changed accordingly. Management mechanisms such as load balancing, power consumption balancing, or heat balancing are implemented among the Bluetooth circuits, so that the overall performance of the multi-member Bluetooth device 100 can be improved, the service life of the Bluetooth circuits can be prolonged, or the user experience can be improved.

Please refer to FIG. 8 to FIG. 9 , which are simplified flowcharts of the operation method of the multi-member Bluetooth device 100 in a fourth embodiment of the present invention.

In the embodiments of FIG. 8 and FIG. 9 , the operations of the multi-member Bluetooth device 100 in the process 202 and the processes 404 to 408 are the same as those in the above-mentioned embodiment of FIG. 4 or FIG. 6 . In other words, the secondary Bluetooth circuit operates in an indirect receiving mode to receive packets without a sequence code transmitted by the primary Bluetooth circuit. However, in this embodiment, after the secondary Bluetooth circuit performs the process 408, the secondary Bluetooth circuit will also perform the process 810 in FIG. 8 to check the data type of the packet transmitted by the primary Bluetooth circuit.

For example, the second control circuit 127 of the second Bluetooth circuit 120 can use the second packet parsing circuit 123 to parse the packets received by the second Bluetooth communication circuit 121 in the process 810 (that is, the packets transmitted by the first Bluetooth circuit 110 ). packet) to obtain the data type of the packet. In practice, the second control circuit 127 can read the content of the serial code field in the packet transmitted from the first Bluetooth circuit 110, or the content of other predetermined fields, so as to determine whether the data type of the packet belongs to the serial code field. data, or data that does not have a serial code.

Next, the second control circuit 127 can perform the process 812 to indirectly determine whether the data type of the packet sent by the remote Bluetooth device 102 has changed by judging whether the data type of the packet transmitted by the first Bluetooth circuit 110 has changed. In practice, the second control circuit 127 can temporarily store the data type of the packet previously transmitted from the first Bluetooth circuit 110 in an appropriate storage circuit (not shown in the figure), so as to be consistent with the data type currently transmitted from the first Bluetooth circuit 110 . The data types of the packets are compared.

If the data type of the packet currently transmitted by the first Bluetooth circuit 110 still belongs to the data without the serial code, it means that the current packet data type of the remote Bluetooth device 102 still belongs to the data without the serial code, which usually represents the multi-member Bluetooth The operating context of the device 100 has not changed. In this case, the first Bluetooth circuit 110 can repeat the operation of the aforementioned process 406 , while the second Bluetooth circuit 120 can continue to operate in the indirect receiving mode, and repeat the aforementioned process 408 , process 810 , and process 812 operate.

On the contrary, if the data type of the packet currently transmitted by the first Bluetooth circuit 110 becomes data with a serial code, it means that the current packet data type of the remote Bluetooth device 102 becomes data with a serial code, which usually represents a multi-member Bluetooth device. The operating context of the 100 has changed. In this case, the second Bluetooth circuit 120 can perform the aforementioned process 616 to generate a second mode switching request, and transmit the aforementioned second mode switching request to the first Bluetooth circuit 110 through the second Bluetooth communication circuit 121 .

In the process 618 , the first Bluetooth circuit 110 receives the second mode switching request from the second Bluetooth circuit 120 through the first Bluetooth communication circuit 111 .

Next, the multi-member Bluetooth device 100 may perform the operation flow shown in FIG. 9 . The foregoing operation description about the corresponding process in FIG. 7 is also applicable to the embodiment in FIG. 9 . For brevity, the description is not repeated here.

As can be seen from the foregoing description, during the period when the second Bluetooth circuit 120 acting as the secondary Bluetooth circuit operates in the indirect receiving mode, the second Bluetooth circuit 120 will intermittently check the data type of the packet transmitted by the first Bluetooth circuit 110, To indirectly determine whether the packet sent by the remote Bluetooth device 102 has changed from data without a serial code to data with a serial code. As long as the second Bluetooth circuit 120 determines that the data type of the packet sent by the remote Bluetooth device 102 still belongs to the data without serial code, the first Bluetooth circuit 110 will not instruct the second Bluetooth circuit 120 to switch to the sniffing mode to avoid receiving It is difficult to confirm whether the second Bluetooth circuit 120 misses the packet sent by the remote Bluetooth device 102.

Only when the second Bluetooth circuit 120 determines that the data type of the packet sent by the remote Bluetooth device 102 has changed from data without a serial code to data with a serial code, will the first Bluetooth circuit 110 instruct the second Bluetooth circuit 120 to The operating mode is switched from the indirect reception mode to the sniffing mode. After the second bluetooth circuit 120 switches to the sniffing mode, the first bluetooth circuit 110 only needs to transmit the packets missed by the second bluetooth circuit 120 to the second bluetooth circuit 120 without forwarding all the packets sent by the remote bluetooth device 102 The packets are sent to the second Bluetooth circuit 120, so the operation burden, power consumption, and heat generation of the first Bluetooth circuit 110 can be reduced, the working time and standby time of the first Bluetooth circuit 110 can be prolonged, and the first Bluetooth circuit 110 can be reduced. Data transmission bandwidth requirements with the second Bluetooth circuit 120 .

Similarly, the multi-member Bluetooth device 100 can adaptively switch the operation mode of the third Bluetooth circuit 130 according to the change of the data type of the packet transmitted from the remote Bluetooth device 102 according to the aforementioned method.

8 and 9, the main Bluetooth circuit in the multi-member Bluetooth device 100 can determine the data type of the packet sent by the remote Bluetooth device 102 from the data without the serial code to the data with the serial code in the secondary Bluetooth circuit. When the data is encoded, the operation mode of the secondary Bluetooth circuit is adaptively switched from the indirect receiving mode to the sniffing mode, and the matching operation between the primary Bluetooth circuit and the secondary Bluetooth circuit is changed accordingly, so it can be used in a multi-member Bluetooth device. Management mechanisms such as load balancing, power consumption balancing, or heat balancing are implemented among the plurality of Bluetooth circuits of 100, so that the overall performance of the multi-member Bluetooth device 100 can be improved, the service life of the Bluetooth circuits can be prolonged, or the user experience can be improved.

Please refer to FIG. 10 to FIG. 11 , which are simplified flowcharts of the operation method of the multi-member Bluetooth device 100 in a fifth embodiment of the present invention.

In the embodiments of FIG. 10 and FIG. 11 , the operations of the multi-member Bluetooth device 100 in the process 202 and the process 404 to the process 810 are the same as those in the aforementioned embodiment of FIG. 8 . In other words, the secondary Bluetooth circuit operates in an indirect receiving mode to receive packets without a sequence code transmitted by the primary Bluetooth circuit. However, in this embodiment, after the secondary Bluetooth circuit performs the process 810, it will not perform the process 812 in FIG. 8, but will perform the process 1012 in FIG. 10 to generate and transmit a corresponding data type notification to the primary Bluetooth circuit.

For example, in the process 1012 , the second control circuit 127 of the second Bluetooth circuit 120 can generate a data type notification corresponding to the data type of the packet currently transferred by the first Bluetooth circuit 110 , and send the notification through the second Bluetooth communication circuit 121 The data type notification is transmitted to the first Bluetooth circuit 110 . In practice, the aforementioned notification of data types can be implemented in various suitable message formats.

In the process 1014, the first Bluetooth circuit 110 can receive the data type notification from the second Bluetooth circuit 120 through the first Bluetooth communication circuit 111, and the first control circuit 117 can indirectly determine the remote Bluetooth device according to the data type notification 102 Whether the data type of the packet sent out has changed. In practice, the first control circuit 117 can notify the data type previously transmitted by the second Bluetooth circuit 120 and temporarily store it in an appropriate storage circuit (not shown in the figure), so as to be compatible with the data currently transmitted by the second Bluetooth circuit 120 . Type notifications are compared.

If the current data type notification shows that the data type of the packet sent by the remote Bluetooth device 102 still belongs to the data without the serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has not changed. In this case, the first Bluetooth circuit 110 can repeat the operation of the aforementioned process 406 .

On the contrary, if the current data type notification shows that the data type of the packet sent by the remote Bluetooth device 102 has changed to data with a serial code, it usually means that the operation situation of the multi-member Bluetooth device 100 has changed. In this case, the first control circuit 117 can perform the process 502 in FIG. 11 to generate a second mode switching instruction for instructing the second Bluetooth circuit 120 to switch from the indirect receiving mode to the sniffing mode, and through the second mode switching instruction A Bluetooth communication circuit 111 transmits the second mode switching instruction to the second Bluetooth circuit 120 .

Next, the multi-member Bluetooth device 100 may perform the rest of the operation flow shown in FIG. 11 . The foregoing operation description about the corresponding process in FIG. 5 is also applicable to the embodiment in FIG. 11 . For brevity, the description is not repeated here.

As can be seen from the foregoing description, when the second Bluetooth circuit 120 operates in the indirect receiving mode, the second Bluetooth circuit 120 will intermittently check the data type of the packet transmitted by the first Bluetooth circuit 110, and generate the corresponding data type The first Bluetooth circuit 110 indirectly determines whether the data type of the packet sent by the remote Bluetooth device 102 has changed according to the data type notification generated by the second Bluetooth circuit 120 . As long as the first Bluetooth circuit 110 determines that the data type of the packet sent by the remote Bluetooth device 102 still belongs to the data without serial code, the first Bluetooth circuit 110 will not instruct the second Bluetooth circuit 120 to switch to the sniffing mode to avoid receiving It is difficult to confirm whether the second Bluetooth circuit 120 misses the packet sent by the remote Bluetooth device 102.

Only when the first Bluetooth circuit 110 determines that the data type of the packet sent by the remote Bluetooth device 102 has changed from data without a serial code to data with a serial code, will the first Bluetooth circuit 110 instruct the second Bluetooth circuit 120 to The operating mode is switched from the indirect reception mode to the sniffing mode. After the second bluetooth circuit 120 switches to the sniffing mode, the first bluetooth circuit 110 only needs to transmit the packets missed by the second bluetooth circuit 120 to the second bluetooth circuit 120 without forwarding all the packets sent by the remote bluetooth device 102 The packets are sent to the second Bluetooth circuit 120, so the operation burden, power consumption, and heat generation of the first Bluetooth circuit 110 can be reduced, the working time and standby time of the first Bluetooth circuit 110 can be prolonged, and the first Bluetooth circuit 110 can be reduced. Data transmission bandwidth requirements with the second Bluetooth circuit 120 .

Similarly, the multi-member Bluetooth device 100 can adaptively switch the operation mode of the third Bluetooth circuit 130 according to the change of the data type of the packet transmitted from the remote Bluetooth device 102 according to the aforementioned method.

10 and 11, the main Bluetooth circuit in the multi-member Bluetooth device 100 can change the data type of the packets transmitted from the remote Bluetooth device 102 from data without a serial code to data with a serial code At the same time, the operation mode of the secondary Bluetooth circuit is adaptively switched from the indirect receiving mode to the sniffing mode, and the matching operation between the primary Bluetooth circuit and the secondary Bluetooth circuit is changed accordingly. Management mechanisms such as load balancing, power consumption balancing, or heat balancing are implemented among the Bluetooth circuits, so that the overall performance of the multi-member Bluetooth device 100 can be improved, the service life of the Bluetooth circuits can be prolonged, or the user experience can be improved.

Please note that the number of member circuits of the multi-member Bluetooth device 100 in the foregoing embodiments may be reduced to two, or may be increased according to actual circuit application requirements.

Certain terms are used in the description and the scope of the claims to refer to specific elements, and those skilled in the art may refer to the same elements by different terms. This specification and the scope of the patent application do not use the difference in name as a way to distinguish elements, but use the difference in function of the elements as a criterion for distinguishing. The "comprising" mentioned in the description and the scope of the patent application is an open-ended term, and should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of connection. 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 or signal connection such as wireless transmission or optical transmission, or through other elements or connections. The means is indirectly electrically or signally connected to the second element.

The descriptions of "and/or" used in the specification include any combination of one or more of the listed items. In addition, unless otherwise specified in the specification, any term in the singular also includes the meaning in the plural.

The above are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

100． . . multi-member Bluetooth device

102． . . remote Bluetooth device

110． . . first Bluetooth circuit

111． . . first Bluetooth communication circuit

113． . . first packet parsing circuit

115． . . first clock synchronizing circuit

117． . . first control circuit

120． . . second Bluetooth circuit

121． . . second Bluetooth communication circuit

123． . . second packet parsing circuit

125． . . second clock synchronizing circuit

127． . . second control circuit

130． . . third Bluetooth circuit

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

2 to 3 are simplified flowcharts of the operation method of the multi-member Bluetooth device according to a first embodiment of the present invention.

4 to 5 are simplified flowcharts of the operation method of the multi-member Bluetooth device according to a second embodiment of the present invention.

6 to 7 are simplified flowcharts of the operation method of the multi-member Bluetooth device according to a third embodiment of the present invention.

8 to 9 are simplified flowcharts of the operation method of the multi-member Bluetooth device according to a fourth embodiment of the present invention.

10 to 11 are simplified flowcharts of the operation method of the multi-member Bluetooth device in a fifth embodiment of the present invention.

100． . . Multi-member Bluetooth device 102． . . remote bluetooth device 110． . . first bluetooth circuit 111． . . first bluetooth communication circuit 113． . . The first packet parsing circuit 115． . . The first clock synchronization circuit 117． . . first control circuit 120． . . second bluetooth circuit 121． . . second bluetooth communication circuit 123． . . The second packet parsing circuit 125． . . Second clock synchronization circuit 127． . . second control circuit 130． . . third bluetooth circuit

Claims (10)

A main Bluetooth circuit (110) in a multi-member Bluetooth device (100), the multi-member Bluetooth device (100) is used for data transmission with a remote Bluetooth device (102), and includes the main Bluetooth circuit (110) and A pair of Bluetooth circuits (120) selectively operable in a sniffing mode or a receiving mode, the main Bluetooth circuit (110) comprising: a first Bluetooth communication circuit (111); a first packet parsing circuit (113) configured to parse the packets received by the first Bluetooth communication circuit (111); and a first control circuit (117) coupled to the first Bluetooth communication circuit (111) and the first packet analysis circuit (113); Wherein, during the period when the secondary Bluetooth circuit (120) operates in the indirect communication mode, the first control circuit (117) uses the first Bluetooth communication circuit (111) to receive the transmission from the remote Bluetooth device (102). The first Bluetooth communication circuit (111) forwards the received packets to the secondary Bluetooth circuit (120), and the secondary Bluetooth circuit (120) receives the first Bluetooth communication circuit (111) and forwards the packets. the incoming packets, but the pair of Bluetooth circuit (120) will not sniff the packets sent by the remote Bluetooth device (102); When the data type of the packet transmitted from the remote Bluetooth device (102) is changed, the secondary Bluetooth circuit (120) switches from the indirect receiving mode to the sniffing mode; and During the period when the secondary Bluetooth circuit (120) operates in the sniffing mode, the first control circuit (117) uses the first Bluetooth communication circuit (111) to receive packets from the remote Bluetooth device (102), And the secondary Bluetooth circuit (120) sniffs the packets sent by the remote Bluetooth device (102). The main Bluetooth circuit (110) of claim 1, wherein during the period when the secondary Bluetooth circuit (120) operates in the indirect receiving mode, the first control circuit (117) and the secondary Bluetooth circuit (120) One of them will check the data type of the packet sent from the remote Bluetooth device (102), and one of the first control circuit (117) and the secondary Bluetooth circuit (120) will determine whether the data type has changed ; Wherein, if the data type changes from data without serial code to data with serial code, the first control circuit (117) will transmit a mode switching instruction to the secondary Bluetooth circuit through the first Bluetooth communication circuit (111). (120), to instruct the secondary Bluetooth circuit (120) to switch from the indirect receiving mode to the sniffing mode. The main Bluetooth circuit (110) of claim 2, wherein the first control circuit (117) is further configured to check the remote Bluetooth during the period when the secondary Bluetooth circuit (120) is operating in the indirect receiving mode the data type of the packet transmitted from the device (102), and determine whether the data type has changed; Wherein, if the data type changes from data without serial code to data with serial code, the first control circuit (117) will transmit a mode switching instruction to the secondary Bluetooth circuit through the first Bluetooth communication circuit (111). (120), to instruct the secondary Bluetooth circuit (120) to switch from the indirect receiving mode to the sniffing mode. The main Bluetooth circuit (110) of claim 2, wherein the first control circuit (117) is further configured to check the remote Bluetooth during the period when the secondary Bluetooth circuit (120) is operating in the indirect receiving mode the data type of the packet transmitted from the device (102), and send a corresponding data type notification to the secondary Bluetooth circuit (120) through the first Bluetooth communication circuit (111) for the secondary Bluetooth circuit (120) to rely on the The data type notification determines whether the data type has changed; Wherein, if the data type changes from data without serial code to data with serial code, the first Bluetooth communication circuit (111) will receive a mode switching request generated by the secondary Bluetooth circuit (120), wherein the The mode switching request is used to request the main Bluetooth circuit (110) to allow the secondary Bluetooth circuit (120) to switch from the indirect receiving mode to the sniffing mode. The main Bluetooth circuit (110) of claim 2, wherein during the period when the secondary Bluetooth circuit (120) operates in the indirect communication mode, the secondary Bluetooth circuit (120) checks the first Bluetooth communication circuit ( 111) The data type of the forwarded packet, and send a corresponding data type notification to the first Bluetooth communication circuit (111), and the first control circuit (117) is also set to indirectly determine the data type according to the data type notification. Whether the data type of the packet transmitted by the remote Bluetooth device (102) has changed; Wherein, if the data type changes from data without serial code to data with serial code, the first control circuit (117) will transmit a mode switching instruction to the secondary Bluetooth circuit through the first Bluetooth communication circuit (111). (120), to instruct the secondary Bluetooth circuit (120) to switch from the indirect receiving mode to the sniffing mode. A secondary Bluetooth circuit (120) in a multi-member Bluetooth device (100), the multi-member Bluetooth device (100) is used for data transmission with a remote Bluetooth device (102), and comprises a main Bluetooth circuit (110) and The secondary Bluetooth circuit (120), the secondary Bluetooth circuit (120) includes: a second Bluetooth communication circuit (121); a second packet parsing circuit (123) configured to parse the packets received by the second Bluetooth communication circuit (121); and A second control circuit (127), coupled to the second Bluetooth communication circuit (121) and the second packet analysis circuit (123), configured to control the secondary Bluetooth circuit (120) in a sniffing mode and a How it works in indirect reception mode; Wherein, when the secondary Bluetooth circuit (120) operates in the indirect receiving mode, the primary Bluetooth circuit (110) will receive packets from the remote Bluetooth device (102) and forward the received packets. to the secondary Bluetooth circuit (120), and the second control circuit (127) will use the second Bluetooth communication circuit (121) to receive the packets forwarded by the primary Bluetooth circuit (110), but the second control circuit (127) (127) will not use the second Bluetooth communication circuit (121) to sniff packets sent by the remote Bluetooth device (102); When the data type of the packet transmitted from the remote Bluetooth device (102) is changed, the secondary Bluetooth circuit (120) switches from the indirect receiving mode to the sniffing mode; and During the period when the secondary Bluetooth circuit (120) operates in the sniffing mode, the primary Bluetooth circuit (110) receives packets from the remote Bluetooth device (102), and the second control circuit (127) uses The second Bluetooth communication circuit (121) sniffs the packets sent by the remote Bluetooth device (102). The secondary Bluetooth circuit (120) of claim 6, wherein during the period when the secondary Bluetooth circuit (120) operates in the indirect receiving mode, the primary Bluetooth circuit (110) and the second control circuit (127) One of them will check the data type of the packet sent from the remote Bluetooth device (102), and one of the main Bluetooth circuit (110) and the second control circuit (127) will determine whether the data type has changed ; Wherein, if the data type changes from data without serial code to data with serial code, the second Bluetooth communication circuit (121) will receive a mode switching instruction generated by the main Bluetooth circuit (110), and the second Bluetooth communication circuit (121) The two control circuits (127) switch the secondary Bluetooth circuit (120) from the indirect receiving mode to the sniffing mode according to the mode switching instruction. The secondary Bluetooth circuit (120) of claim 7, wherein the primary Bluetooth circuit (110) checks the remote Bluetooth device (102) while the secondary Bluetooth circuit (120) is operating in the indirect receive mode ) the data type of the packet transmitted, and transmits a corresponding data type notification to the second Bluetooth communication circuit (121), and the second control circuit (127) is also configured to determine whether the data type is based on the data type notification. Change; Wherein, if the data type changes from data without serial code to data with serial code, the second control circuit (127) will transmit a mode switching request to the main Bluetooth circuit through the second Bluetooth communication circuit (121) (110), to request the main Bluetooth circuit (110) to allow the secondary Bluetooth circuit (120) to switch from the indirect receiving mode to the sniffing mode. The secondary Bluetooth circuit (120) of claim 7, wherein the second control circuit (127) checks the primary Bluetooth circuit (110) during the period when the secondary Bluetooth circuit (120) operates in the indirect receiving mode ) the data type of the packet transmitted over, to indirectly judge whether the data type of the packet transmitted by the remote Bluetooth device (102) has changed; Wherein, if the data type changes from data without serial code to data with serial code, the second control circuit (127) will transmit a mode switching request to the main Bluetooth circuit through the second Bluetooth communication circuit (121) (110), to request the main Bluetooth circuit (110) to allow the secondary Bluetooth circuit (120) to switch from the indirect receiving mode to the sniffing mode. The secondary Bluetooth circuit (120) of claim 7, wherein the second control circuit (127) checks the primary Bluetooth circuit (110) during the period when the secondary Bluetooth circuit (120) operates in the indirect receiving mode ) transmits the data type of the packet, and transmits a corresponding data type notification to the main Bluetooth circuit (110) through the second Bluetooth communication circuit (121), so that the main Bluetooth circuit (110) can rely on the data type The notification indirectly determines whether the data type of the packet transmitted by the remote Bluetooth device (102) has changed; Wherein, if the data type changes from data without serial code to data with serial code, the second Bluetooth communication circuit (121) will receive a mode switching instruction generated by the main Bluetooth circuit (110), and the second Bluetooth communication circuit (121) The two control circuits (127) switch the secondary Bluetooth circuit (120) from the indirect receiving mode to the sniffing mode according to the mode switching instruction.

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