Patent ID: 8411653

Claim:
A receiving apparatus, comprising: a radio receiving section that receives a first radio signal transmitted according to a first communication system and a second radio signal transmitted according to a second communication system; a first detection section that detects the first radio signal among radio signals received by the radio receiving section according to the first communication system; a second detection section that detects the second radio signal among radio signals received by the radio receiving section according to the second communication system using a predetermined correlation threshold; a threshold control section that temporarily changes the predetermined correlation threshold of the second detection section when a segment of the first radio signal is detected by the first detection section, wherein the predetermined correlation threshold represents a cross correlation between the second radio signal and a portion of a preamble signal of the second radio signal; and a data processing section that processes, based on a temporal order of the first and second radio signals being detected according to the respective first or second communication system, one of a first decoded signal corresponding to the first radio signal or a second decoded signal corresponding to the second radio signal, wherein the first detection section performs primary detection to detect a portion of a preamble signal of the first radio signal and secondary detection to detect the whole preamble signal of the first radio signal and the second detection section performs primary detection to detect the portion of the preamble signal of the second radio signal and secondary detection to detect the whole preamble signal of the second radio signal, and wherein the data processing section performs processing for the first decoded signal if secondary detection of the first radio signal by the first detection section occurs prior to secondary detection of the second radio signal by the second detection section, and performs processing for the second decoded signal if secondary detection of the second radio signal by the second detection section occurs prior to secondary detection of the first radio signal by the first detection section.