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    • 1. 发明授权
    • Digital image recording and/or reproducing apparatus using a plurality of compression methods
    • 使用多种压缩方法的数字图像记录和/或再现装置
    • US06192190B1
    • 2001-02-20
    • US08453489
    • 1995-05-30
    • Akihiko TojoToshihiko MimuraYoshitaka MurataNobuaki DateKan TakaiwaHideaki KawamuraHiroyuki HoriiTakashi SuzukiSeiichi Ozaki
    • Akihiko TojoToshihiko MimuraYoshitaka MurataNobuaki DateKan TakaiwaHideaki KawamuraHiroyuki HoriiTakashi SuzukiSeiichi Ozaki
    • H04N592
    • H04N9/7921H04N5/772H04N9/8042H04N9/8063
    • A digital image recording and/or reproducing apparatus using a plurality of compression methods may include, in a recording section, (a) data compression circuitry, including a plurality of compression circuits which have different compression methods, for changing a compression rate for input digital image data by changing a combination of the plurality of compression circuits compressing the digital input image data and (b) circuitry for recording (1) the digital image data compressed by the data compressing circuit and (2) data representing the compression rate of the digital image data compressed by the data compressing circuit. The apparatus may include a reproducing section having (a) a reproducing circuit for reproducing from the recording medium the digital image data compressed with the compression rate provided by the combination of different compression methods, (b) detecting circuitry for detecting the data representing the predetermined compression rate stored on the recording medium, and (c) reconstruction circuitry for reconstructing the digital image data reproduced by the reproducing circuitry according to the representing data detected by the detecting circuitry.
    • 使用多种压缩方法的数字图像记录和/或再现装置可以在记录部分中包括(a)数据压缩电路,包括具有不同压缩方法的多个压缩电路,用于改变输入数字的压缩率 通过改变压缩数字输入图像数据的多个压缩电路的组合的图像数据和(b)用于记录的电路(1)由数据压缩电路压缩的数字图像数据和(2)表示数字压缩电路的压缩率的数据 由数据压缩电路压缩的图像数据。 该装置可以包括:再现部分,具有(a)再现电路,用于从记录介质再现以不同压缩方法的组合提供的压缩率压缩的数字图像数据,(b)检测电路,用于检测表示预定 存储在记录介质上的压缩率,以及(c)重建电路,用于根据由检测电路检测到的表示数据来重建由再现电路再现的数字图像数据。
    • 10. 发明授权
    • Camera shutter and viewfinder control apparatus
    • 相机快门和取景器控制装置
    • US4945379A
    • 1990-07-31
    • US391716
    • 1989-08-07
    • Nobuaki DateAkio SunouchiSyuichiro SaitoYoshitaka MurataYukio OgawaNobuo Tezuka
    • Nobuaki DateAkio SunouchiSyuichiro SaitoYoshitaka MurataYukio OgawaNobuo Tezuka
    • G03B7/081G03B9/16G03B19/12
    • G03B9/16G03B19/12G03B7/081
    • A shutter device for a still video camera comprises first and second shutter blades, a latch member and an unlatch member. The latch member latches the first blade at its moved position where an image pickup element is exposed to an image light. The first blade is kept latched for a preparatory exposure to correct a set exposure value on the basis of the output of the pickup element or for picking up a motion picture. The unlatch member releases the latching of the first blade. In one embodiment, the unlatch member is provided on the second blade to unlatch the first blade when the second blade is moved to terminate the exposure. In other embodiments, the unlatch member includes an electromagnet to unlatch the first blade.A still video camera comprises a view finder mirror and a mirror operating mechanism. The mechanism includes a motor and is arranged to retract and return the mirror relative to an optical path by utilizing a normal and a reverse rotation of the motor, respectively.In the disclosed embodiments, the camera further comprises a mechanism to maintain the mirror in the retracted condition and a shutter in the opened condition to operate in a motion video mode where an image pickup element is continuously exposed to an image light. The mechanism for setting in the motion video mode may be operable manually from the exterior of the camera or by connecting an external device to the camera.
    • 用于静止摄像机的快门装置包括第一和第二快门叶片,闩锁构件和解锁构件。 闩锁构件将第一刀片锁定在其图像拾取元件暴露于图像光的移动位置处。 第一刀片被保持锁定以进行准备曝光,以基于拾取元件的输出或拾取电影来校正设定的曝光值。 解锁构件释放第一刀片的锁定。 在一个实施例中,当第二刀片移动以终止曝光时,解锁构件设置在第二刀片上以解除第一刀片。 在其他实施例中,解锁构件包括用于解锁第一刀片的电磁体。 静止摄像机包括取景器镜和镜操作机构。 该机构包括电动机并且被布置成分别通过利用电动机的正常和反向旋转来相对于光路缩回并返回反射镜。 在所公开的实施例中,照相机还包括将反射镜保持在缩回状态的机构,以及处于打开状态的快门以运动视频模式操作,其中图像拾取元件连续地暴露于图像光。 用于在运动视频模式中设置的机构可以从照相机的外部手动操作或者通过将外部设备连接到相机来进行操作。