In the Bluetooth host device 110, the host-side communication circuit 111 is arranged to operably receive and transmit various Bluetooth packets. The input circuit 113 is arranged to operably various commands issued by the user. The host-side cypher key generation circuit 115 is arranged to operably execute various selected or predetermined cypher key algorithms to generate cypher keys required by the Bluetooth host device 110 for conducting subsequent Bluetooth data transmissions with respective member devices in the Bluetooth device set 102. The processing circuit 117 is coupled with the host-side communication circuit 111, the input circuit 113, and the host-side cypher key generation circuit 115. The processing circuit 117 is arranged to operably generate various Bluetooth packets to be transmitted by the host-side communication circuit 111, arranged to operably parse various Bluetooth packets received by the host-side communication circuit 111 to obtain related data or instructions, and further arranged to operably control operations of the host-side cypher key generation circuit 115. The processing circuit 117 is further arranged to operably control operations of the Bluetooth host device 110 according to various operating commands issued by the user through the input circuit 113.
The term “Bluetooth packet” used throughout the description and the claims also encompass various protocol data units (PDUs) specified by various Bluetooth communication standards.
In some embodiments, the processing circuit 117 is further coupled with a display device 150, and arranged to operably control operations of the display device 150, so as to display related information or images to the user.