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公开(公告)号：US10980405B2
公开(公告)日：2021-04-20
申请号：US16220113
申请日：2018-12-14
Applicant: OLYMPUS CORPORATION
Inventor： Tomoharu Ogihara , Fumiyuki Okawa , Keisuke Tsutsui , Keisuke Ogawa
Abstract: An imaging device includes: a pixel unit including a plurality of pixels that are arranged in a two-dimensional matrix, each pixel being configured to generate an imaging signal corresponding to an amount of light received and output the image signal; an A/D converter configured to conduct A/D conversion on the imaging signal generated by the pixel unit or on a drive power for driving the pixel unit, to generate a digital signal and output the digital signal to an external unit; a switch that is capable of switching a connection of the A/D converter to the pixel unit or a transmission line for transmitting the drive power; and a first controller configured to control the switch to connect the A/D converter to the transmission line in predetermined timing to cause the A/D converter to output a voltage value of the drive power to the external unit.
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公开(公告)号：US10548461B2
公开(公告)日：2020-02-04
申请号：US15162812
申请日：2016-05-24
Applicant: OLYMPUS CORPORATION
Inventor： Tomoharu Ogihara , Fumiyuki Okawa , Keisuke Tsutsui , Keisuke Ogawa
Abstract: An endoscope apparatus includes image sensors, a power supply unit, a failure detection unit, and a controller. The power supply unit supplies power independently to the image sensors. The failure detection unit detects a failure in each of the image sensors. The controller controls the power supply unit to stop power supply to an image sensor in which a failure is detected at the failure detection unit.
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公开(公告)号：US20210185254A1
公开(公告)日：2021-06-17
申请号：US17190838
申请日：2021-03-03
Applicant: OLYMPUS CORPORATION
Inventor： Masato Osawa , Keisuke Ogawa
Abstract: In an imaging system according to an embodiment, a camera unit and an information-processing unit are connected to each other by differential-signal transmission lines. The camera unit includes a solid-state imaging device and an output driver. The solid-state imaging device is configured to operate on the basis of a power source voltage higher than a substrate voltage and generate imaging data. The output driver is configured to output a differential signal of the imaging data to the differential-signal transmission lines. The information-processing unit includes a voltage generator and a de-emphasis circuit. The voltage generator is configured to generate a reference voltage higher than the substrate voltage and lower than the power source voltage. The de-emphasis circuit is configured to control an amplitude of the differential signal by using the substrate voltage and the reference voltage.
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公开(公告)号：US09768619B2
公开(公告)日：2017-09-19
申请号：US15371352
申请日：2016-12-07
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ogawa , Fumiyuki Okawa , Tomoharu Ogihara
CPC classification number: H02J4/00 , A61B1/00006 , A61B1/00009 , A61B1/00027 , A61B1/00045 , A61B1/04 , A61B1/045 , A61B1/06 , G02B23/24 , H02J1/00 , H02J2001/008
Abstract: A power supply control circuit includes a drive voltage generation circuit configured to generate a plurality of drive voltages by using a plurality of power supply voltages that are supplied from outside, a sequencer configured to stop, when supply of the plurality of power supply voltages is stopped in a predetermined order, generation of the plurality of drive voltages according to priority ranks set in advance, and a power supply monitor circuit configured to perform, when supply of one power supply voltage, among the plurality of power supply voltages, is stopped in an order different from the predetermined order but supply of other power supply voltages is continued, an operation for simultaneously stopping generation of drive voltages that are set at higher priority ranks than a priority rank for stopping generation of a drive voltage that uses the one power supply voltage.
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