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    • 3. 发明授权
    • Endoscope automatic light control apparatus and endoscope apparatus
making use of the same
    • 内窥镜自动照明控制装置及使用其的内窥镜装置
    • US4967269A
    • 1990-10-30
    • US343718
    • 1989-04-27
    • Katsuyoshi SasagawaMasao UeharaAkinobu UchikuboKatsuyuki SaitoMasahide KannoMasahiko SasakiTakehiro NakagawaJun HasegawaShinji Yamashita
    • Katsuyoshi SasagawaMasao UeharaAkinobu UchikuboKatsuyuki SaitoMasahide KannoMasahiko SasakiTakehiro NakagawaJun HasegawaShinji Yamashita
    • G02B23/24A61B1/04A61B1/06G02B23/26H04N5/225H04N5/235
    • A61B1/042H04N5/2352H04N5/2354H04N2005/2255
    • An endoscope automatic light control apparatus comprises an automatic light control apparatus for controlling the quantity of light incident to an imaging apparatus for imaging an endoscopic image so as to maintain a signal from the imaging apparatus substantially at a constant level. An automatic gaim control apparatus inputs a signal from the imaging apparatus and controls its output level so as to maintain the signal substantially at a constant level. The automatic light control apparatus and the automatic gain control apparatus respectively having a plurality of brightness information generating apparatuses generating brightness information based on the signal from the imaging apparatus. The plurality of brightness information generating apparatuses are different from each other in a method of generating brightness information and one of the plurality of brightness information generating apparatuses able to be selected. A selecting apparatus selects the brightness generating apparatus of the same method as the automatic light control apparatus and as the automatic gain control apparatus. The automatic light control apparatus controls the quantity of light based on the brightness information and the automatic gain control apparatus controls its output level based on the brightness information. The endoscope apparatus further comprises an endoscope unit having an insert section with an observation window and an image forming optical system, an imaging apparatus, a signal processing apparatus and an illuminating system.
    • 一种内窥镜自动照明光控制装置,包括:自动光控制装置,用于控制入射到成像装置的光量,用于对内窥镜图像进行成像,以便将来自成像装置的信号基本保持在恒定水平。 自动发射控制装置输入来自成像装置的信号并控制其输出电平,以便将信号保持在恒定水平。 所述自动光控制装置和所述自动增益控制装置分别具有基于来自所述摄像装置的信号生成亮度信息的多个亮度信息生成装置。 多个亮度信息生成装置在生成亮度信息的方法和能够选择的多个亮度信息生成装置中的一个之间彼此不同。 选择装置选择与自动光控制装置和自动增益控制装置相同的方法的亮度生成装置。 自动光控制装置基于亮度信息来控制光量,并且自动增益控制装置基于亮度信息来控制其输出电平。 所述内窥镜装置还具备:内窥镜单元,具有具有观察窗的插入部和图像形成用光学系统,成像装置,信号处理装置以及照明系统。
    • 8. 发明授权
    • Endoscope output signal control device and endoscope apparatus making
use of the same
    • 使用内窥镜输出信号控制装置和内窥镜装置
    • US4928172A
    • 1990-05-22
    • US244777
    • 1988-09-15
    • Masao UeharaAkinobu UchikuboKatsuyuki SaitoMasahide KannoJun HasegawaMasahiko SasakiKatsuyoshi SasagawaShinji Yamashita
    • Masao UeharaAkinobu UchikuboKatsuyuki SaitoMasahide KannoJun HasegawaMasahiko SasakiKatsuyoshi SasagawaShinji Yamashita
    • A61B1/05H04N5/225H04N5/235
    • H04N5/2352A61B1/05H04N2005/2255
    • An endoscope using a solid state imaging device characterized by comprising a solid state imaging device capable of imaging an object image, a light emitting means giving an illuminating light to said object, a first level detecting means fed with a video signal from said solid state imaging device and detecting the level of this signal, a first level comparing means comparing the detected level of this detecting means and a preset first reference level with each other and outputting a first control signal corresponding to the level difference, a light adjusting means fed with this first control signal and adjusting the illuminating light from said light emitting means on the basis of this signal, a gain variable amplifying means taking in the video signal from the detecting end in said first level detecting means and amplifying it, a second level detecting means detecting the level of the signal from this amplifying means and a circuit means comparing the detected level of this detecting means and a preset second reference level with each other, forming a second control signal corresponding to the level difference and making this signal a gain controlling signal to said amplifying means.
    • 一种使用固态成像装置的内窥镜,其特征在于,包括能够对被摄体图像进行成像的固态成像装置,向所述被摄体赋予照明光的发光装置,具有来自所述固态摄像机的视频信号的第一电平检测装置 装置并检测该信号的电平;第一电平比较装置,将检测装置的检测电平与预先设定的第一参考电平进行比较,并输出对应于电平差的第一控制信号;馈送该电平差的光调节装置 第一控制信号,并且基于该信号调整来自所述发光装置的照明光;增益可变放大装置,从所述第一电平检测装置中的检测端接收视频信号并对其进行放大;第二电平检测装置检测 来自该放大装置的信号的电平和比较检测到的该检测电平的电路装置 形成与所述电平差对应的第二控制信号,并使所述信号成为所述放大装置的增益控制信号。