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    • 8. 发明授权
    • Endoscopic imaging system and endoscope system
    • 内窥镜成像系统和内窥镜系统
    • US07355625B1
    • 2008-04-08
    • US09523332
    • 2000-03-10
    • Akihiko MochidaKatsuyuki SaitoHideki TashiroKotaro OgasawaraMakoto TsunakawaNoboru Kusamura
    • Akihiko MochidaKatsuyuki SaitoHideki TashiroKotaro OgasawaraMakoto TsunakawaNoboru Kusamura
    • H04N7/18
    • H04N7/183A61B1/042H04N5/232H04N2005/2255
    • An imaging apparatus having an imaging device for imaging an object in cooperation with an endoscope is connected to a video processing unit for producing a standard video signal so that it can be disconnected freely. A signal delay occurs over a signal line linking the imaging device and the video processing unit. For this reason, a timing generator and a phase adjustment circuit are incorporated in the imaging apparatus. The timing generator generates driving signals used to drive the imaging device, and the phase adjustment circuit adjusts the phases of the driving signals so that an output signal of the imaging device will be input to the video processing unit according to predetermined timing. Even when the signal line has a different length from any other or the imaging device offers a different number of pixels from any other, the difference can be readily coped with owing to the imaging apparatus. This leads to alleviation of a load incurred by the video processing unit.
    • 具有用于与内窥镜协作的物体成像的成像装置的成像装置连接到用于产生标准视频信号的视频处理单元,使得其可以自由地断开。 在连接成像设备和视频处理单元的信号线上发生信号延迟。 因此,定时发生器和相位调整电路并入成像装置。 定时发生器产生用于驱动成像装置的驱动信号,并且相位调整电路调节驱动信号的相位,使得成像装置的输出信号将根据预定定时输入到视频处理单元。 即使当信号线与任何其它信号线具有不同的长度或成像装置提供与任何其他像素不同数量的像素时,由于成像装置也可以容易地应对差异。 这导致减轻由视频处理单元产生的负担。
    • 10. 发明授权
    • Endoscopic apparatus
    • 内窥镜装置
    • US06456317B1
    • 2002-09-24
    • US09198850
    • 1998-11-24
    • Kanichi MatsumotoKatsuyuki SaitoMakoto TsunakawaAkihiko MochidaKotaro OgasawaraShinji YamashitaNoboru KusamuraWataru OhnoKuniaki KamiHideki Tashiro
    • Kanichi MatsumotoKatsuyuki SaitoMakoto TsunakawaAkihiko MochidaKotaro OgasawaraShinji YamashitaNoboru KusamuraWataru OhnoKuniaki KamiHideki Tashiro
    • H04N318
    • H04N5/2354H04N5/2352H04N9/045H04N2005/2255
    • In an endoscopic apparatus, when the dynamic range expansion on/off switch is turned on, a CPU changes a switch from one contact over to another. Red, green, and blue digital signals sent from a knee and gamma circuit are output to respective dynamic range expanding circuits. Thus, the dynamic ranges for the digital signals are expanded. On the other hand, when the CPU changes another switch from one contact over to the other, a light adjustment signal output from an operational amplifier is then driven to a level causing a diaphragm in a light source unit to open further. Consequently, an increased amount of illumination light is supplied to the incident end of a light guide running through an endoscope. Thus, when a dynamic range is expanded, a halation effect will not occur in imaging of an object located at a point near the distal end of the endoscope. Moreover, insufficiency of illumination light will not occur in the imaging of an object located at a point far from the endoscope distal end. The dynamic range can therefore be expanded efficiently. An endoscopic image of the interior of a body cavity can be viewed with the body cavity set to a desired brightness level all points ranging from a near point to a far point within the body cavity.
    • 在内窥镜装置中,当动态范围扩大开/关开关打开时,CPU将开关从一个触点切换到另一个触点。 从膝盖和伽马电路发送的红色,绿色和蓝色数字信号被输出到相应的动态范围扩展电路。 因此,扩展了数字信号的动态范围。 另一方面,当CPU将另一个开关从一个触点切换到另一个触点时,从运算放大器输出的调光信号被驱动到导致光源单元中的隔膜进一步打开的水平。 因此,向穿过内窥镜的导光体的入射端供给增加量的照明光。 因此,当动态范围扩大时,在位于内窥镜远端附近的物体的成像中不会发生晕影效果。 此外,在位于远离内窥镜远端的点的物体的成像中不会发生照明光的不足。 因此可以有效地扩展动态范围。 体腔内部的内窥镜图像可以被观察到,其体腔被设置为期望的亮度级别,其范围从体腔内的近点到远点。