Signal processing circuit
AssigneeFujitsu Limited
InventorsNaoki Odate, Katsuhiro Yoda
Life of this patent
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Abstract
A signal processing circuit is configured by connecting a plurality of basic circuits connected in series, each of the basic circuits comprising an arithmetic circuit subjecting a first input signal and a second input signal to a signal processing; a first selection circuit outputting the first input signal or an output signal of the arithmetic circuit; and a second selection circuit outputting the second input signal or an output signal of the arithmetic circuit, so as to make it possible to change operations of the circuit as a whole by properly making a selection on which signal should be output with the aid of the first and second selection circuits, and to execute different signal processing on a single circuit depending on the selection.
Claims15
A signal processing circuit comprising:
- a plurality of basic circuits connected in series, each of said basic circuits including:
- an arithmetic circuit to receive a first input signal and a second input signal, calculate a third signal based on said first input signal and said second input signal, and make the third signal available;
- a first selection circuit to output one of said first input signal and said third signal as a first output signal;
- and
- a second selection circuit to output one of said second input signal and said third signal as a second output signal,
- wherein said first output signal of said first selection circuit is supplied as an input signal to a second basic circuit of a succeeding stage of said signal processing circuit, as viewed from an input side of said signal processing circuit, and
- said second output signal of said second selection circuit is supplied as an input signal to a third basic circuit of a preceding stage of said signal processing circuit, as viewed from the input side of said signal processing circuit.
A signal processing circuit comprising:
- a plurality of basic circuits connected in series, each of said basic circuits including:
- an exclusive OR circuit to receive a first input signal and a second input signal, perform an exclusive OR operation upon said first input signal and said second input signal resulting in a third signal, and make the third signal available;
- a first selector to output one of said first input signal and said third signal as a first output signal;
- and
- a second selector to output one of said second input signal and said third signal as a second output signal,
- wherein said first output signal of said first selector is supplied as an input signal to a second basic circuit of a succeeding stage of said signal processing circuit, as viewed from an input side of said signal processing circuit, and
- said second output signal of said second selector is supplied as an input signal to third basic circuit of a preceding stage of said signal processing circuit, as viewed from the input side of said signal processing circuit.
Dependencies are inferred from the claim text.