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    • 52. 发明授权
    • Electronic endoscope apparatus for discriminating optically variable power from electronically variable power
    • 用于从电子可变功率识别光学可变功率的电子内窥镜装置
    • US06387046B2
    • 2002-05-14
    • US09797944
    • 2001-03-05
    • Kazuhiro YamanakaMitsuru Higuchi
    • Kazuhiro YamanakaMitsuru Higuchi
    • A61B104
    • H04N5/23296H04N5/232H04N2005/2255
    • When a variable powers witch of an electroscope is operated, a motor is driven to move a movable lens, and an optically enlarged image can be obtained. Furthermore, the optical image is electrically enlarged by an electronically variable power circuit. When the optically variable power is switched into the electronically variable power and vice versa, the operation of the variable power switch can be temporarily nullified to stop the variable power operation, and the switch is operated again to resume the operation. Thus, an operator can recognize the switch between the optically variable power and the electronically variable power. Furthermore, a time lag for a predetermined time can be set to switch between the optically variable power and the electronically variable power.
    • 当操作电动机的可变功率时,驱动电动机移动可移动透镜,并且可以获得光学放大的图像。 此外,光学图像通过电子可变功率电路电放大。 当光学可变功率被切换成电子可变功率并且反之亦然时,可变功率开关的操作可能暂时失效以停止可变功率操作,并且再次操作开关以恢复操作。 因此,操作者可以识别光学可变功率和电子可变功率之间的开关。 此外,可以设定预定时间的时间延迟以在光学可变功率和电子可变功率之间切换。
    • 53. 发明授权
    • Signal processor circuit for endoscope systems of all-pixels readout type
    • 全像素读出型内窥镜系统信号处理电路
    • US5929900A
    • 1999-07-27
    • US950979
    • 1997-10-15
    • Kazuhiro YamanakaMitsuru Higuchi
    • Kazuhiro YamanakaMitsuru Higuchi
    • G02B23/24A61B1/04H04N5/18H04N5/225H04N7/18H04N9/04
    • H04N9/045H04N5/18H04N2005/2255
    • A signal processor circuit which stabilizes a clamp processing of black levels even in an endoscope system of an all-pixels readout type and prevents image qualities from being degraded at a stage to shift from a still image to a moving image in particular. In this signal processor circuit, video signals of all picture elements obtained with a single exposure are read out of a CCD, odd line data is stored into a first memory, even line data is stored into a second memory, and mixed picture element signals are generated by a mixer circuit, whereafter a predetermined image processing is performed by a first DVP. A clamp circuit and an A/D converter are disposed at stages preceding the first and second memories, a through video signal output from the A/D converter is input into the first DVP by way of a selector circuit on the basis of an optical black pulse and a black level clamp signal generated on the basis of the through video signal is fed back to the clamp circuit. Accordingly, the signal processor circuit can perform a favorable clamp processing without using past data stored in the memories.
    • 信号处理器电路即使在全像素读出型的内窥镜系统中也能够稳定黑电平的钳位处理,并且防止在从静止图像到运动图像的移动的阶段降低图像质量。 在该信号处理电路中,从CCD读取所有图像单元的视频信号,将奇数行数据存储到第一存储器中,偶数行数据存储到第二存储器中,混合像素信号为 由混频器电路产生,之后由第一DVP执行预定的图像处理。 钳位电路和A / D转换器设置在第一和第二存储器之前的阶段,从A / D转换器输出的直通视频信号通过基于光学黑色的选择器电路输入到第一DVP 基于通过视频信号产生的脉冲和黑电平钳位信号被反馈到钳位电路。 因此,信号处理器电路可以在不使用存储在存储器中的过去数据的情况下执行良好的钳位处理。
    • 60. 发明授权
    • Electronic-endoscope light quantity controlling apparatus
    • 电子内窥镜光量控制装置
    • US06734894B1
    • 2004-05-11
    • US09249777
    • 1999-02-16
    • Mitsuru HiguchiShinji TakeuchiKazuhiro Yamanaka
    • Mitsuru HiguchiShinji TakeuchiKazuhiro Yamanaka
    • H04N718
    • H04N7/183
    • The present invention is an electronic-endoscope apparatus for compensating for lack of light quantity caused by a delayed response from a light shielding mechanism when an all-pixel reading system is used. In the case of, for example, a moving image, this apparatus reads pixel mix data out from a CCD to reproduce motions faithfully. For a still image, this apparatus reads out all pixels obtained by the CCD during a single exposure period using a light shielding period set by a light shielding plate, and outputs this data to a mixing circuit via memories to form a pixel mix signal. This configuration enables a high-quality still image to be obtained. In this case, however, the light quantity may be insufficient due to a delayed response from the light shielding plate. Thus, during the exposure period for still-image formation, the lamp voltage is increased above a normal amount or the diaphragm aperture is increased in order to compensate for the shortage of light quantity. In addition, this light quantity compensation can be achieved by amplifying a video signal or controlling the increase of the electronic shutter time.
    • 本发明是一种电子内窥镜装置,用于当使用全像素读取系统时,补偿由遮光机构的延迟响应引起的光量不足。 在例如运动图像的情况下,该装置从CCD中读取像素混合数据以忠实地再现运动。 对于静止图像,该装置使用由遮光板设置的遮光周期在单个曝光期间读出由CCD获得的所有像素,并且经由存储器将该数据输出到混合电路以形成像素混合信号。 该配置使得能够获得高质量的静止图像。 然而,在这种情况下,由于来自遮光板的延迟响应,光量可能不足。 因此,在静止图像形成的曝光期间,为了补偿光量的不足,灯电压增加到正常量以上或光阑孔径增大。 此外,该光量补偿可以通过放大视频信号或控制电子快门时间的增加来实现。