Receiving Apparatus and Electronic Device Using the Same
AssigneeRohm Co., Ltd.
InventorShinji Yano
Life of this patent
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Abstract
A photodiode receives an infrared signal transmitted from a transmitter. A current distributing unit outputs a detection current Id output from the photodiode as a first detection current Id1 and a second detection current Id2 to a subsequent first current-to-voltage conversion amplifier and a subsequent second current-to-voltage conversion amplifier respectively. The first and second current-to-voltage conversion amplifiers convert the detection currents into voltages with current-to-voltage conversion gains g1 and g2. The current-to-voltage conversion gains g1 and g2 of the first and second current-to-voltage conversion amplifiers are set such that ranges of signal levels in which the distributed detection currents Id1 and Id2 can significantly be amplified differ from each other.
Claims26
A receiver comprising:
- a sensitive element which receives a signal from the outside to convert the signal into an electric signal and outputs the electric signal;
- a distributing unit which distributes the electric signal output from the sensitive element in a form of a plurality of electric signals;
- a plurality of amplifiers which amplify the plurality of electric signals distributed by the distributing unit with different gains;
- and
- an adder which adds the plurality of electric signals amplified by the plurality of amplifiers.
A receiver comprising:
- a plurality of sensitive elements which convert input signals into electric signals to output the electric signals;
- a plurality of amplifiers which amplify the plurality of electric signals output from the plurality of sensitive elements;
- and
- an adder which adds the plurality of electric signals amplified by the plurality of amplifiers.
A receiver comprising:
- a sensitive element which receives a signal from the outside to convert the signal into an electric signal and outputs the electric signal;
- an amplifier which amplifies the electric signal output from the sensitive element;
- a distributing unit which distributes the electric signal amplified by the amplifier into a plurality of paths;
- and
- an adder which adds the plurality of electric signals distributed by the distributing unit.
An electronic equipment which is remotely controlled from the outside using an infrared signal, the electronic equipment comprising:
- a receiver comprising:
- a sensitive element which receives a signal from the outside to convert the signal into an electric signal and outputs the electric signal;
- a distributing unit which distributes the electric signal output from the sensitive element in a form of a plurality of electric signals;
- a plurality of amplifiers which amplify the plurality of electric signals distributed by the distributing unit with different gains;
- and
- an adder which adds the plurality of electric signals amplified by the plurality of amplifiers;
- wherein the sensitive element is a light receiving element which receives a pulse-modulated infrared signal which is incident from the outside;
- a demodulation unit which demodulates the infrared signal received by the receiver;
- and
- a control unit which controls operation of the electronic equipment based on the infrared signal demodulated by the demodulation unit.
An electronic equipment which is remotely controlled from the outside using an infrared signal, the electronic equipment comprising:
- a receiver comprising:
- a plurality of sensitive elements which convert input signals into electric signals to output the electric signals;
- a plurality of amplifiers which amplify the plurality of electric signals output from the plurality of sensitive elements;
- and
- an adder which adds the plurality of electric signals amplified by the plurality of amplifiers;
- wherein the sensitive element is a light receiving element which receives a pulse-modulated infrared signal which is incident from the outside;
- a demodulation unit which demodulates the infrared signal received by the receiver;
- and
- a control unit which controls operation of the electronic equipment based on the infrared signal demodulated by the demodulation unit.
An electronic equipment which is remotely controlled from the outside using an infrared signal, the electronic equipment comprising:
- a receiver comprising:
- a sensitive element which receives a signal from the outside to convert the signal into an electric signal and outputs the electric signal;
- an amplifier which amplifies the electric signal output from the sensitive element;
- a distributing unit which distributes the electric signal amplified by the amplifier into a plurality of paths;
- and
- an adder which adds the plurality of electric signals distributed by the distributing unit;
- wherein the sensitive element is a light receiving element which receives a pulse-modulated infrared signal which is incident from the outside;
- a demodulation unit which demodulates the infrared signal received by the receiver;
- and
- a control unit which controls operation of the electronic equipment based on the infrared signal demodulated by the demodulation unit.
Dependencies are inferred from the claim text.