Patent ID: 7756213

Claim:
A method for enhancing Bluetooth transmission speed and robustness of an emitting end and a receiving end of a communication system, wherein at least one of the emitting and receiving ends is provided with BlueSPEED technology: BlueSPEED-PSK/BlueSPEED-DELTA-PSK (Pulse Shift Keying), wherein in case that BlueSPEED technology is utilized at the emitting and receiving ends, the method includes the following steps: modulating a bit stream of a plurality of bits at the emitting end, which comprises the steps of: forming 4-bit symbols sequentially from every consecutive 4 bits in the bit stream, searching and obtaining the phase information corresponding to the respective 4-bit symbols according to the BlueSPEED-PSK or BlueSPEED-DELTA-PSK, and forming data packets containing the respective phase information; transmitting the data packets at the emitting end; receiving the data packets at the receiving end; and de-modulating the data packets at the receiving end, which includes the steps of: reading the respective phase information in the data packet, searching and obtaining the 4-bit symbols corresponding to the respective phase information according to BlueSPEED-PSK or BlueSPEED-DELTA-PSK, interpreting the 4 bits contained in the respective 4-bits symbols, and identifying BlueSPEED-PSK and BlueSPEED-DELTA-PSK transmission using (4-bits) CRC (cyclic redundancy check) applied to blocks of bits formed by every 4th bit in the bit stream.