Patent ID: 8335577

Claim:
A chipset for an audio player supporting Bluetooth standard advanced audio distribution profile (A2DP), comprising: a first processor reading audio source data from an audio source; and a second processor coupled to the first processor and performing a first part of the advanced audio distribution profile (A2DP) source encoding comprising at least one of the steps of a sequence of polyphase analysis of sub band coding (SBC) encoding, scale factor calculation and bit allocation of SBC encoding, APCM quantization of SBC encoding, bit stream packing of SBC encoding, real-time transport protocol (RTP) packing, and multiplexing and fragmentation of RTP packets on an output data of the first processor; wherein the first processor performs a second part of advanced audio distribution profile (A2DP) source encoding comprising the other steps of a sequence of polyphase analysis of sub band coding (SBC) encoding, scale factor calculation and bit allocation of SBC encoding, APCM quantization of SBC encoding, bit stream packing of SBC encoding, real-time transport protocol (RTP) packing, and multiplexing and fragmentation of RTP packets on an output data of the second processor, and the first and second processors collectively act as a Bluetooth host, and wherein the first and second processors are respectively a microcontroller unit (MCU) and a digital signal processor (DSP).