Apparatus for multi-channel signal processing and communication terminal using the same

A signal processing apparatus, comprising:

• a first channel part which processes a predetermined first channel of signal in accordance with a first clock;
• and
• a second channel part which processes a predetermined second channel of signal in accordance with a second clock independently from the processing by the first channel part,
• wherein the first clock and second clock are shifted in phase so that electric current flowing in the apparatus is dispersed and decreased.

A signal processing apparatus, comprising:

• a first channel part which processes a predetermined first channel of signal in accordance with a first clock;
• a first input circuit which receives an input signal transmitted on the first channel and supplies it to the first channel part;
• a first output circuit which outputs the signal processed by the first channel part;
• a second channel part which processes a predetermined second channel of signal in accordance with a second clock independently from the processing by the first channel part;
• a second input circuit which receives an input signal transmitted on the second channel and supplies it to the second channel part;
• a second output circuit which outputs the signal processed by the second channel part;
• a PROM, which stores programming for the signal processing;
• a decoder, which decodes the programming stored in the PROM;
• and
• a DROM, which stores data used for the signal processing,
• wherein the first clock and second clock are shifted in phase such that electric current flowing in the apparatus is dispersed and decreased.

A signal processing apparatus, comprising:

• a first channel part which processes a predetermined first channel of signal;
• a second channel part which processes a second channel of signal independently from the processing by the first channel part;
• a first input port which receives the first channel of signal to be inputted into the first channel part;
• a second input port which receives the second channel of signal to be inputted into the second channel part;
• a first output port which outputs a signal processed by the first channel part;
• a second output port which outputs a signal processed by the second channel part;
• a first input circuit interposed between said first input port and said first channel part which receives an input signal transmitted on the first channel and supplies it to the first channel part;
• a first output circuit interposed between said first channel part and said first output port which outputs the signal processed by the first channel part;
• a second input circuit interposed between said second input port and said second channel part which receives an input signal transmitted on the second channel and supplies it to the second channel part;
• and
• a second output circuit interposed between said second channel part and said second output port which outputs the signal processed by the second channel part, wherein
• the first input circuit comprises an expander, which expands the input signal, and an A/D (Analog to Digital) converter, which converts an analog input signal into a digital input signal,
• the first output circuit comprises a compressor, which compresses the signal to be outputted and a D/A (Digital to Analog) converter, which converts a processed digital signal into an analog signal to be outputted,
• the second input circuit comprises an expander, which expands the input signal, and an A/D (Analog to Digital) converter, which converts an analog input signal into a digital input signal, and
• the second output circuit comprises a compressor, which compresses the signal to be outputted, and a D/A (Digital to Analog) converter, which converts a processed digital signal into an analog signal to be outputted.

A signal processing apparatus, comprising:

• a first channel part which processes a predetermined first channel of signal;
• a second channel part which processes a second channel of signal independently from the processing by the first channel part;
• a first input port which receives the first channel of signal to be inputted into the first channel part;
• a second input port which receives the second channel of signal to be inputted into the second channel part;
• a first output port which outputs a signal processed by the first channel part;
• a second output port which outputs a signal processed by the second channel part;
• wherein
• the first channel part further comprises a first PROM, which stores necessary program for the signal processing of the first channel;
• a first decoder, which decodes the program stored in the first PROM;
• and a first DROM (Data ROM), which stores data used for the signal processing;
• and
• the second channel part further comprises a second PROM, which stores necessary program for the signal processing of the second channel;
• a second decoder, which decodes the program stored in the second PROM;
• and a second DROM, which stores data used for the signal processing.