Digital data processor having data-unscrambling function
    62.
    发明授权
    Digital data processor having data-unscrambling function 失效
    具有数据解扰功能的数字数据处理器

    公开(公告)号:US5046095A

    公开(公告)日:1991-09-03

    申请号:US265021

    申请日:1988-10-31

    申请人: Kazuhiro Akiyama

    发明人: Kazuhiro Akiyama

    摘要: A data processor includes a data unscrambling unit. The unit includes a memory circuit for storing data supplied thereto in a scrambled form, the data stored in the memory circuit being thereafter read out therefrom in an order which is to be the unscrambled form. The memory circuit includes a memory cell array, a set of first terminals supplied with a write address having a value which is changed one by one, a data write control circuit for writing data into the memory cell array in a first order in accordance with changes in value of the write address. A set of second terminals is supplied with a read address having a value which is changed one by one. A data read control circuit reads out data from the memory cell array in a second order that is different from the first order, the read out being in accordance with a change in value of the read address.

    Camera with changeable focal length
    63.
    发明授权
    Camera with changeable focal length 失效
    相机具有可变焦距

    公开(公告)号:US4896182A

    公开(公告)日:1990-01-23

    申请号:US294810

    申请日:1989-01-09

    IPC分类号: G03B7/099 G03B7/20 G03B17/12

    CPC分类号: G03B7/20

    摘要: A camera with a taking lens system changeable in focal length between a relatively long and a relatively short focal length, which has an exposure control meter comprising a masking member disposed in front of a photoelectric element to provide an electric exposure control output, and formed with first and second openings for allowing light that has passed therethrough to fall on the photoelectric element at different incident angles. A light stop member is movable to cover or uncover the second openings upon changing the taking lens system between the relatively long and relatively short focal lengths. Upon changing the taking lens system to the relatively short focal length, the light stop member is moved to uncover all of the first and second openings so as to increase the quantity of light falling on the photoelectric element and to permit that light to fall at an increased incident angle; and, on the other hand, upon shifting the taking lens system to the relatively long focal length, the light stop member is moved back so as to cover only the second opening means while uncovering the first openings, thereby to decrease the quantity of light falling on the photoelectric element and to permit that light to fall only at a decreased incident angle.

    摘要翻译: 具有拍摄镜头系统的相机可以在相对较长和相对短焦距之间的焦距上变化,其具有曝光控制仪,其包括设置在光电元件前面的掩模构件,以提供电曝光控制输出,并形成有 用于允许已经通过的光的第一和第二开口以不同的入射角落在光电元件上。 当在相对较长和相对短的焦距之间改变拍摄透镜系统时,光阻挡件可移动以覆盖或露出第二开口。 在将拍摄镜头系统改变为相对较短的焦距时,光停止构件被移动以露出所有第一和第二开口,以便增加落在光电元件上的光量,并允许光在 增加入射角; 另一方面,在将拍摄镜头系统移动到相对较长的焦距时,挡光部件向后移动,以便仅露出第二开口装置,同时露出第一开口,从而减少光的下落量 并且允许光仅在降低的入射角处下降。

    Shutter speed control means for focal plane shutter
    64.
    发明授权
    Shutter speed control means for focal plane shutter 失效
    用于焦平面快门的快门速度控制装置

    公开(公告)号:US3984848A

    公开(公告)日:1976-10-05

    申请号:US469847

    申请日:1974-05-14

    IPC分类号: G03B7/083 G03B9/64

    CPC分类号: G03B7/083

    摘要: The start of the leading curtain or the trailing curtain of a focal plane shutter is controlled to obtain an accurate exposure time. A delay means is provided in the mechanism for releasing the leading curtain or in the mechanism for releasing the trailing curtain. The difference between the delay time of the start of the leading curtain and the delay time of the start of the trailing curtain is controlled to be equal to the constant time during which the leading curtain runs overlapping with the trailing curtain. In one embodiment, an inertia member is provided in the vicinity of the curtain release member to delay the movement of the curtain release member. In another embodiment, an electric delay circuit is provided to delay the start of the trailing curtain. In both embodiments, the time of delay of the start of the curtain can be controlled.

    摘要翻译: 控制焦平面快门的前帘或后帘的开始以获得准确的曝光时间。 在用于释放前帘的机构或用于释放后帘的机构中设置延迟装置。 引导帘幕开始的延迟时间和拖尾帘幕开始的延迟时间之间的差值被控制为等于前帘运行与后帘幕重叠的恒定时间。 在一个实施例中,惯性构件设置在帘布释放构件附近以延迟帘幕释放构件的移动。 在另一个实施例中,提供电延迟电路以延迟后帘幕的开始。 在两个实施例中,可以控制帘幕开始延迟的时间。