Abstract: A Bluetooth transceiver is compatible for usage with a wired headphone, in which the wired headphone has a signal transmission line, at least one speaker, a plug and a control interface for generating a trigger signal to control the operation of a mobile device having Bluetooth wireless communication capabilities. The Bluetooth transceiver includes a headphone jack, a processing unit and a Bluetooth module. The headphone jack is accommodates the plug so that the Bluetooth transceiver is electrically connected to the wired headphone. The processing unit receives and decodes the trigger signal to generate a control code. The processing unit selects a control command according to the control code from a lookup table. The Bluetooth module is electrically connected to the processing unit. The Bluetooth module receives the control command and transmits the control command to the mobile device. The mobile device executes the corresponding functions according to the received control command.

Abstract: A Bluetooth transceiver is compatible for usage with a wired headphone, in which the wired headphone has a signal transmission line, at least one speaker, a plug and a control interface for generating a trigger signal to control the operation of a mobile device having Bluetooth wireless communication capabilities. The Bluetooth transceiver includes a headphone jack, a processing unit and a Bluetooth module. The headphone jack is accommodates the plug so that the Bluetooth transceiver is electrically connected to the wired headphone. The processing unit receives and decodes the trigger signal to generate a control code. The processing unit selects a control command according to the control code from a lookup table. The Bluetooth module is electrically connected to the processing unit. The Bluetooth module receives the control command and transmits the control command to the mobile device. The mobile device executes the corresponding functions according to the received control command.

Abstract: An audio broadcasting apparatus used for broadcasting an audio signal is illustrated. There is a first multimedia channel existing between the audio broadcasting apparatus and a mobile apparatus, and there is a second multimedia channel existing between the audio broadcasting apparatus and a video displayer. The audio broadcasting apparatus includes an antenna, a wireless receiving unit, a multimedia processing unit, an AV transceiver, an audio processing unit and a speaker. The wireless receiving unit receives multimedia stream data transmitted by the mobile apparatus via the antenna. The multimedia processing unit separates the multimedia stream data into a video stream data and an audio stream data. The AV transceiver transmits the video stream data to the video displayer for broadcasting video, and the audio processing unit receives and decodes the audio stream data and then transmits the audio stream data decoded to the speaker for broadcasting audio signal.

Abstract: A transmission system of expandable electronic device includes a first electronic device and a second electronic device. The first electronic device includes a first socket unit and a first processor, and the first socket includes a hall sensing circuit. The second electronic device includes a first plug unit and a second processor, and the first plug unit includes a first magnetic unit. The first processor couples to the first hall sensing circuit, the second processor couples to the first plug unit. By the plug unit inserts the first socket unit, the second electronic device couples to the first electronic device. When the first plug unit inserts the first socket unit, the first hall sensing circuit senses the first magnetic unit to generate a magnetic field sensing signal, and the first processor executes a first processing procedure according to magnetic field sensing signal.