Patent ID: 9641925
Date: 2017-05-02
CPC Classifications: H04R

Claim:
1. A headphone wireless expansion device for switching among multiple targets, connecting to a headphone comprising an audio data transmission unit, the headphone wireless expansion device comprising: an audio capturing unit for capturing an unrecognized voice frequency signal generated from a user's voice; a control unit connecting to the audio capturing unit for receiving the unrecognized voice frequency signal, the control unit memorizing a multi-target connection data and an audio control mechanism, the multi-target connection data storing a device identification code and a device authorization code, both of which are corresponding to one of a plurality of information devices respectively, and voice frequency data corresponding and being set to be related to the device identification code and the device authorization code respectively, the audio control mechanism for analyzing voice frequency feature of the unrecognized voice frequency signal and searching the voice frequency data of the multi-target connection data having same frequency features as the frequency features of the unrecognized voice frequency signal to output the device identification code and the device authorization code corresponding to the identified voice frequency data; a wireless communication unit including a Bluetooth module and connecting to the control unit, the wireless communication unit via the Bluetooth module receiving the device identification code and the device authorization code corresponding to the identified voice frequency data to connect to the corresponding information device and via the Bluetooth module receiving audio data from the information device to transmit to the control unit; wherein, when the control unit receives another unrecognized voice frequency signal, the wireless communication unit via the Bluetooth module receives another device identification code and another device authorization code from the control unit corresponding to the unrecognized voice frequency signal and switches connection from the information device to another information device; and an audio information transmission unit connecting to the control unit and the audio data transmission unit of the headphone for transmitting the audio data from the control unit to the headphone through the audio data transmission unit for playing.