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US 2015/0214935 A1Published application
Input circuit
AssigneeKabushiki Kaisha Toshiba
InventorsRyota Terauchi, Shinsuke Fujii
Life of this patent
Estimating the term…
Abstract
The input circuit includes a first switch control circuit that controls a first switch and a second switch. The first switch control circuit turns off the first switch and the second switch in a first period during which a first input signal and a second input signal are DC signals. The first switch control circuit turns on the first switch and the second switch in a second period during which the first input signal and the second input signal are AC signals.
Claims20
An input circuit comprising:
- a first input terminal that receives a first input signal;
- a second input terminal that receives a second input signal that is phase-reversed from the first input signal;
- a first capacitor with a first end connected to the first input terminal and a second end connected to a first node;
- a second capacitor with a first end connected to the second input terminal and a second end connected to a second node;
- a reference voltage generating circuit that generates a reference voltage and supplies the voltage to a reference node;
- a first resistor connected between the first node and the reference node;
- a second resistor connected between the second node and the reference node;
- a first switch connected in series with the first resistor between the first node and the reference node;
- a second switch connected in series with the second resistor between the second node and the reference node;
- a differential receiving circuit with a first input connected to the first node and a second input connected to the second node, the differential receiving circuit receiving differential signals inputted to the first input and the second input and outputting a single-phase output signal;
- and
- a first switch control circuit that controls the first switch and the second switch,
- wherein the first switch control circuit turns off the first switch and the second switch in a first period during which the first input signal and the second input signal are DC signals, and
- the first switch control circuit turns on the first switch and the second switch in a second period during which the first input signal and the second input signal are AC signals.
11 more elements
An input circuit comprising:
- a first input terminal that receives a first input signal;
- a second input terminal that receives a second input signal that is phase-reversed from the first input signal;
- a first capacitor with a first end connected to the first input terminal and a second end connected to a first node;
- a second capacitor with a first end connected to the second input terminal and a second terminal connected to a second node;
- a reference voltage generating circuit that generates a reference voltage and supplies the voltage to a reference node;
- a first resistor connected between the first node and the reference node;
- a second resistor connected between the second node and the reference node;
- a first switch connected in series with the first resistor between the first node and the reference node;
- a second switch connected in series with the second resistor between the second node and the reference node;
- a differential receiving circuit with a first input connected to the first node and a second input connected to the second node, the differential receiving circuit receiving differential signals inputted to the first input and the second input and outputting a single-phase output signal;
- and
- a first switch control circuit that controls the first switch and the second switch.
9 more elements
Dependencies are inferred from the claim text.