Signal processing apparatus and signal processing method
AssigneeNEC Electronics Corporation
InventorKANJI TAKEDA
Life of this patent
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Abstract
Provided is a signal processing apparatus including: an equalizer circuit that amplifies a predetermined frequency band of an input signal and outputs an output signal; a sampler circuit that samples the output signal amplified by the equalizer circuit with the output signal being offset in an amplitude direction using a multiphase clock system; an area information calculation circuit that calculates area information of an eye opening in an eye diagram of the output signal based on the output signal sampled by the sampler circuit; and a control circuit that controls amplification of the equalizer circuit based on the area information of the eye opening calculated by the area information calculation circuit.
Claims9
A signal processing apparatus comprising:
- equalizer means that amplifies a predetermined frequency band of an input signal and outputs an output signal;
- sampler means that samples the output signal amplified by the equalizer means with the output signal being offset in an amplitude direction using a multiphase clock system;
- area information calculation means that calculates area information of an eye opening in an eye diagram of the output signal based on the output signal sampled by the sampler means;
- and
- control means that controls amplification of the equalizer means based on the area information of the eye opening calculated by the area information calculation means.
A signal processing method comprising:
- amplifying a predetermined frequency band of an input signal and outputting an output signal;
- sampling the amplified output signal with the output signal being offset in an amplitude direction using a multiphase clock system;
- calculating area information of an eye opening in an eye diagram of the output signal based on the sampled output signal;
- and
- controlling the amplification based on the calculated area information of the eye opening.
A signal processing apparatus comprising:
- an equalizer circuit that amplifies a predetermined frequency band of an input signal and outputs an output signal;
- a sampler circuit that samples the output signal amplified by the equalizer circuit with the output signal being offset in an amplitude direction using a multiphase clock system;
- an area information calculation circuit that calculates area information of an eye opening in an eye diagram of the output signal based on the output signal sampled by the sampler circuit;
- and
- a control circuit that controls amplification of the equalizer circuit based on the area information of the eye opening calculated by the area information calculation circuit.
Dependencies are inferred from the claim text.