Patent ID: 7346330

Claim:
A radio apparatus, comprising: an antenna that transmits and receives a radio signal; a modulating/demodulating module, connected to the antenna, which modulates a transmission signal to a radio-frequency signal, and demodulates a reception signal from a radio-frequency signal; a signal processing module, connected to the modulating/demodulating module, which performs signal processing for a transmission/reception signal; and a CPU, connected to the signal processing module, which performs protocol processing for a transmission/reception signal, wherein the signal processing module includes plural functional blocks, which perform signal processing for transmission signal data or reception signal data, and whose function is defined by an installed program, and wherein each of the functional blocks sends, to the functional block of the prior stage, busy state information indicating whether the functional block is in preparation to receive next transmission signal data or next reception signal data as a backward control signal, and outputs, to the functional block of the next stage, transmission signal data or reception signal data having been processed in the functional block when receiving busy state information indicating in preparation to receive next transmission signal data or reception signal data from a functional block of a subsequent stage.