Signal output board and endoscope
First Claim
1. A signal output board comprising:
- a drive signal generation section configured to generate a drive signal for an electronic device;
an inverse signal generation section configured to generate an inverse signal by inverting a phase of the drive signal from the drive signal generation section;
a first signal transmission line portion configured to transmit the drive signal from the drive signal generation section;
a second signal transmission line portion configured to cancel noise emitted by the first signal transmission line portion by transmitting the inverse signal from the inverse signal generation section along at least a part of the second signal transmission line portion arranged in parallel with and adjacent to the first signal transmission line portion;
an output end portion configured to output the drive signal transmitted by the first signal transmission line portion to an outside; and
an equivalent load section including a load equivalent to a transmission path for the drive signal from the output end portion to the electronic device, the equivalent load section being connected to an end portion of the second signal transmission line portion.
3 Assignments
0 Petitions
Accused Products
Abstract
A signal output board includes: a drive signal generation section configured to generate a drive signal for a CCD; an inverse signal generation section configured to generate an inverse signal by inverting a phase of the drive signal from the drive signal generation section; a first signal transmission line portion configured to transmit the drive signal from the drive signal generation section; a second signal transmission line portion configured to transmit the inverse signal from the inverse signal generation section, at least part of the second signal transmission line portion being arranged in parallel to and adjacent to the first signal transmission line portion; an output end portion configured to output the drive signal transmitted by the first signal transmission line portion, to the outside; and an equivalent load section including a load equivalent to a transmission path for the drive signal from the output end portion to the electronic device, the equivalent load section being connected to an end portion of the second signal transmission line portion.
59 Citations
12 Claims
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1. A signal output board comprising:
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a drive signal generation section configured to generate a drive signal for an electronic device; an inverse signal generation section configured to generate an inverse signal by inverting a phase of the drive signal from the drive signal generation section; a first signal transmission line portion configured to transmit the drive signal from the drive signal generation section; a second signal transmission line portion configured to cancel noise emitted by the first signal transmission line portion by transmitting the inverse signal from the inverse signal generation section along at least a part of the second signal transmission line portion arranged in parallel with and adjacent to the first signal transmission line portion; an output end portion configured to output the drive signal transmitted by the first signal transmission line portion to an outside; and an equivalent load section including a load equivalent to a transmission path for the drive signal from the output end portion to the electronic device, the equivalent load section being connected to an end portion of the second signal transmission line portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An endoscope comprising:
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an insertion portion including an image pickup device at a distal end portion thereof; an operation section; a universal cord; a connector; and a signal output board comprising; a drive signal generation section configured to generate a drive signal for an electronic device; an inverse signal generation section configured to generate an inverse signal by inverting a phase of the drive signal from the drive signal generation section; a first signal transmission line portion configured to transmit the drive signal from the drive signal generation section; a second signal transmission line portion configured to cancel noise emitted by the first signal transmission line portion by transmitting the inverse signal from the inverse signal generation section along at least a part of the second signal transmission line portion arranged in parallel with and adjacent to the first signal transmission line portion; an output end portion configured to output the drive signal transmitted by the first signal transmission line portion to an outside; and an equivalent load section including a load equivalent to a transmission path for the drive signal from the output end portion to the electronic device, the equivalent load section being connected to an end portion of the second signal transmission line portion, wherein the signal output board is disposed in the operation section or the connector.
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Specification