Radio communication apparatus

Claim 1

A radio communication apparatus useful for both digital communications and analog communications comprising: - a first linear codec (3) for converting an analog signal into a digital signal, and for converting a digital signal into an analog signal; - a ROM (5) for storing a plurality of signal procedures (55-58) used for analog communications and digital communications; - a digital signal processor (DSP) (4) for processing the digital signal which is received from the first linear codec (3) and outputting the digital coded signal according to the corresponding signal procedure stored in the ROM (5), and for processing the digital coded signal according to the signal coding procedure stored in the ROM (5) and outputting a digital signal, in the case of a digital communication, and for processing the digital signal which is received from the first linear codec (3) and outputting the digital modulated signal according to the signal procedure stored in the ROM (5), and for processing the digital demodulated signal according to the signal procedure stored in the ROM (5) and outputting the decoded digital signal, in the case of an analog communication; - a digital modulation/demodulation portion (6) for generating a digital modulated signal from the digital coded signal, and for generating a coded digital signal from the digital modulated signal; - a second linear codec (9) being placed between the DSP (4) and an FM modulation/demodulation portion (10), for generating an analog modulation signal from a digital coded signal, and for generating a digital demodulated signal from an analog demodulated signal; and - an FM modulation/demodulation portion (10) for generating an analog FM modulation signal from the analog modulation signal, and for generating an analog demodulated signal from an analog FM modulation signal.