Dual-mode communications processor

A dual-mode integrated circuit communications processor for use in a communications device comprising:

• a dual-mode signal processor having an input port for receiving digitized data, said signal processor functioning as a vocoder during operation of said device in a digital modulation mode and as an FM processor during operation of said device in an FM mode, said signal processor alternating between vocoding and FM processing when in a hybrid mode;
• a digital modulation network, coupled to said dual-mode signal processor, for generating digital modulation data using said digitized data processed by said dual-mode signal processor during said digital modulation mode;
• an FM modulator, coupled to said dual-mode signal processor, for generating FM modulation data using said digitized data processed by said dual-mode signal processor during said FM mode;
• and
• a controller for selecting between operation in said digital modulation and FM modes.

A dual-mode integrated circuit modem for use in a communications device comprising:

• a dual-mode signal processor having first and second signal ports, said signal processor performing:
• (i) first and second signal processing operations upon digitized data transmitted by said communications device during operation of said device in first and second modes, respectively;
• (ii) the converse of said first and second signal processing operations upon digitized data received by said communications device during operation of said device in first and second modes, respectively;
• and
• (iii) alternating between said first and second signal processing operations during operation in a hybrid mode;
• a digital modulation modem disposed to exchange digital information with said dual-mode signal processor through said first signal port during operation of said device in said first mode;
• a narrowband modem disposed to exchange digital information with said dual-mode signal processor through said second signal port during operation of said device in said second mode;
• and
• a controller for selecting between operation in said first and second modes.

A dual-mode communications processor for use in a communications device comprising:

• a dual-mode signal processor having first and second ports for receiving digitized data, said signal processor performing a first and second signal processing operations upon digitized data during operation in first and second modes, respectively, said signal processor alternating between said first and second signal processing operations when in a hybrid mode;
• p1 a digital demodulation network, coupled to said first port, for generating said digitized data in response to information signals received by said communications device during operation in said first mode;
• a narrowband demodulator, coupled to said second port, for generating said digitized data in response to information signals received by said communications device during operation in said second mode;
• a controller for selecting between operation in said first and second modes.

In an dual-mode communications device, an integrated circuit dual-mode communications processor comprising:

• a dual-mode signal processor having at least first and second signal ports, said signal processor being configured as:
• a vocoder during operation of said communications device in a digital modulation mode, and as
• an FM filter during operation of said communications device in an FM mode;
• said signal processor alternating between operating as said vocoder and said FM filter during operation of said communication device in a hybrid mode;
• a digital modulation modem processor disposed to exchange digital information with said dual-mode signal processor through said first signal port during operation of said device in said digital modulation mode;
• an FM modem processor disposed to exchange digital information with said dual-mode signal processor through said second signal port during operation of said device in said FM mode;
• and
• a controller for selecting between operation in said first and second modes.

In dual-mode communications device, a dual-mode signal processing network comprising:

• digital processor means for performing a vocoding operation during operation of said dual-mode communications device in a first mode and for performing a predefined signal processing function during operation of said device in a second mode, and for alternating between performing said vocoding operation and said predefined signal processing function during operation of said device in a hybrid mode;
• a dual-mode interface, connected to a first port of said digital processor means, for transferring digitized speech samples to and from said digital processor means during operation in said first and second modes;
• a first processing interface, connected to a second port of said digital processor means, through which digitally encoded information is transferred during operation of said device in said first mode;
• and
• a second processing interface, connected to a third port of said digital processor means, through which digital FM data is transferred during operation of said device in said second mode.