LIGHT-SOURCE DRIVER FOR PORTABLE ENDOSCOPE
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United States of America Patent
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Issued Date -
Jun 26, 2008
app pub date -
Dec 20, 2007
filing date -
Dec 20, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A light-source driver for a light-source unit detachable from an endoscope body of a portable endoscope is provided. The light-source driver comprises a step-up controller, a first switch, and a second switch. The step-up controller supplies stepped-up voltage from a power source to a light source. The first switch's status switches between the On-state and Off-state in connection with the attachment and detachment of the light-source unit from the endoscope body. The second switch is connected to a break-control terminal of the step-up controller for setting a standby mode of the step-up controller. The On-state and Off-state of the second switch are controlled by the On-state and Off-state of the first switch, and the step-up controller is set to the standby mode when the light-source unit is detached from the endoscope body.
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