Asahi Kogaku Kogyo Kabushiki Kaisha

Pentax Corporation

Hoya Corporation

Haruhiko Hibi

Mitsuru Iida

Kenichi Iriyama

Katsuhiko Furuya

Junji Usami

An electronic endoscope has a video-scope with an image sensor, and a signal processor that generates digital component video signals from image-pixel signals that are read from the image sensor. The electronic endoscope has, further, a color-reverse detector that determines whether a color-reverse occurs in the digital component video signals, and a color correcting processor that changes color signal data associated with the color-reverse so as to correct the color-reverse when the color-reverse occurs.

Electronic endoscope

An endoscope system, including a plurality of processor devices, each of which having a detachably attached endoscope, and a controller device, which is communicably connected with the plurality of processor devices, is provided. The controller device is capable of outputting at least one of an activating signal to activate at least one of the processor devices and an inactivating signal to inactivate at least one of the processor devices to the at least one of the processor devices. Each of the plurality of processor devices includes a first power supplying unit to supply the processor device with activating power, a power supply controlling unit, which is driven by preparatory power and is capable of at least one of switching on the first power supplying unit and switching off the first power supplying unit, and a second power supplying unit to supply the preparatory power to the power supply controlling unit.

Endoscope system

An electronic endoscope has a video-scope with an image sensor and a video-processor. The video-scope has an objective lens and an illuminating lens in a tip portion. Further, the electronic endoscope has a luminance calculator and a light-amount adjuster. The luminance calculator divides the total area of a subject image into a plurality of division areas, defines weighted areas from the plurality of division areas in accordance with the tip characteristics of the video-scope, and calculates a total luminance value of the subject image by putting priority on predetermined weighted areas relative to the other areas. The light-amount adjuster adjusts the quantity of light illuminating the subject in accordance with the total luminance value.

Electronic endoscope with light-amount adjustment apparatus

An electronic endoscope includes a video-scope with an image sensor and a video-processor, to which the video-scope is detachably connected. The electronic endoscope has a light source that emits illuminating light for illuminating a subject, a color adjuster that performs a color adjustment process for color image signals read from the image sensor, which include a plurality of color signal components corresponding to a plurality of color elements, and a light source detector that detects the type of the light source. The color adjuster performs the color adjustment process in accordance with the type of the light source such that color in displayed subject image is properly reproduced.

Electronic endoscope with color adjustment function

An electronic endoscope system has a video-scope, a video-processor, and a liquid supply apparatus. The video-scope has a liquid transmitting tube for spouting liquid from a tip of the video-scope, and is detachably and electrically connected to the video-processor. The liquid supply apparatus is electrically connectable to the video-processor, and has a container for storing liquid and a liquid supplier that supplies the liquid in the container to the liquid transmitting tube. A liquid jet performance member for spouting the liquid is provided on the video-scope. A liquid jet performance detector detects operational status of the liquid jet performance member, and a liquid jet performance transmitter feeds a control signal regarding the operational status of the liquid jet performance member to the liquid supply apparatus. The liquid supplier supplies the liquid in the container to the liquid transmitting tube in accordance with the control signal.

Electronic endoscope system with liquid supply apparatus

An electronic endoscope system includes an endoscope unit, a video processing unit, a display device. The video processing unit is provided with a device for changing parameters referred to for controlling illumination light and an image display condition. A registration ID (identification) code and the displaying parameters are stored in a non-volatile memory. A hard key is detachably coupled to the video processing unit. The hard key stores an ID code intrinsic thereto, and the displaying condition is adjusted in accordance with the displaying parameters stored in the memory if the ID code of the hard key coincides with the registration ID code. While, the display condition is adjusted in accordance with a predetermined reference displaying parameters if the ID code of the hard key does not coincide with the registration ID code.

Electronic endoscope system

A light source apparatus is used in a video endoscope system having a charge coupled device (CCD) image sensor and a monitor. The light source apparatus provides illumination to a scene to be imaged by the CCD image sensor and displayed on the monitor. The light source apparatus includes a discharge lamp serving as a light source. The lamp is subject to progressive degradation during use so that its output light intensity achievable with a given level of input current gradually decreases through its lifetime. The current supplied to the lamp is controlled using a feedback control technique so as to maintain the output light intensity of the lamp at a substantially fixed, desired intensity level. In order to allow the operator to timely replace the discharge lamp with a new one, the input current to the discharge lamp is detected and compared to a threshold level. The threshold level may be selected to a level corresponding to the rated power of the lamp designated by the manufacturer. The input current has a tendency that its level for achieving a given level of output light intensity of the lamp gradually increases through the lifetime of the lamp, which is caused by progressive degradation of the lamp while the output light intensity level is controlled to be at a substantially fixed level. When the level of the input voltage has reached the threshold level, a visual alarm indication is provided on the monitor, indicating the necessity for replacement of the discharge lamp.

Light source apparatus using electric lamp as light source

In a unit support structure of an endoscopic light source apparatus, for supporting a unit disposed in an endoscopic light source apparatus on a chassis of the light source apparatus, one end side of an elastic member which is disposed in substantially parallel with the lower face of the unit is fixed to a projection piece which substantially perpendicularly projects from the lower face of the unit, and the other end side of the elastic member is fixed to a member fixed to the chassis.

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Tokyo, Japan

Haruhiko Hibi