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公开(公告)号：US4719511A
公开(公告)日：1988-01-12
申请号：US878516
申请日：1986-06-23
申请人： Hitoshi Hirobe , Hideo Morita , Takeharu Shin
发明人： Hitoshi Hirobe , Hideo Morita , Takeharu Shin
CPC分类号： H04N5/2351
摘要： A method for controlling the amount of the exposure of a television camera whereby a luminance signal from only a selected portion of an overall photometric range of the camera is employed for adjusting the exposure. A first signal is produced specifying the selected photometric range. In response to this signal, and further in response to horizontal and vertical synchronizing signals from the television camera in synchronization with the scanning of an electron beam in the camera, a range signal is produced when the scanning beam is within the specified photometric range. The luminance signal outputted by the television camera only at that time is employed for exposure control.
摘要翻译： 一种用于控制电视摄像机的曝光量的方法，由此仅采用照相机的整体光度范围的选定部分的亮度信号来调节曝光。 产生指定所选择的测光范围的第一信号。 响应于该信号，并且响应于来自电视摄像机的水平和垂直同步信号与摄像机中的电子束的扫描同步，当扫描光束在指定的光度范围内时，产生范围信号。 仅在该时间由电视摄像机输出的亮度信号用于曝光控制。
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2.发明授权Television flicker preventing circuit with gamma value conversion prior to field-to-frame conversion 失效电视闪烁防止电路，在场到帧转换之前进行伽马值转换
公开(公告)号：US4783703A
公开(公告)日：1988-11-08
申请号：US846310
申请日：1986-03-31
申请人： Makoto Murakoshi , Hitoshi Hirobe , Hiromasa Hino
发明人： Makoto Murakoshi , Hitoshi Hirobe , Hiromasa Hino
摘要： In a field/frame conversion system in which a field signal recorded on a track of a recording medium is repeatedly reproduced, a field signal delayed by 1/2 horizontal scanning duration and a directly provided field signal are alternately selected by a switch at each vertical scanning duration, and one of the field signals is formed by an arithmetic mean of a signal delayed by 1 horizontal scanning duration and a directly provided signal, to provide a frame signal, a flicker preventing circuit device in a field/frame conversion comprises a circuit provided in a front stage of an arithmetic mean circuit of the field/frame conversion system for bringing a gamma value of the field signal to 1, and a gamma circuit provided in a rear stage of the arithmetic mean circuit for returning the gamma value of the field signal to its original value.
摘要翻译： 在记录在记录介质的轨道上的场信号被重复再现的场/帧转换系统中，延迟1/2水平扫描持续时间的场信号和直接提供的场信号通过每个垂直方向上的开关交替地选择 扫描持续时间，并且场信号中的一个由延迟了1个水平扫描持续时间的信号和直接提供的信号的算术平均值形成，以提供帧信号，场/帧转换中的闪烁防止电路装置包括电路 提供在用于使场信号的伽马值为1的场/帧转换系统的算术平均电路的前级，以及设置在算术平均电路的后级的伽马电路，用于返回 场信号到其原始值。
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3.发明授权
公开(公告)号：US4821127A
公开(公告)日：1989-04-11
申请号：US922049
申请日：1986-10-20
申请人： Takashi Soga , Hitoshi Hirobe
发明人： Takashi Soga , Hitoshi Hirobe
摘要： A demagnitizing apparatus erases, track by track, wide-band and high-frequency recorded signals such as signals which are frequency-modulated (FM) with video signals, and thus eliminates the need for a relay to switch a single magnetic head between erasing capability and recording or reproducing capability.
摘要翻译： 减磁装置根据轨道，轨道，宽带和高频记录信号（例如具有视频信号的频率调制（FM））的信号进行擦除，从而不需要继电器将单个磁头切换到擦除能力 以及记录或再现能力。
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公开(公告)号：US4465352A
公开(公告)日：1984-08-14
申请号：US418983
申请日：1982-09-16
CPC分类号： G02B7/38
摘要： An automatic focusing device for moving a photographic lens to an optimum focusing position by detecting an object image contrast signal that changes with the varying position of the photographic lens. The device stops the photographic lens while it is being moved between an infinite distance photographing position to a least distance photographing position when the level of the detected contrast signal becomes less than a threshold level. The invention compares a first signal, which is set to correspond to a position at which the photographic lens is to be stopped, and a second signal, which is generated when the contrast signal level is less than the preset threshold level.
摘要翻译： 一种自动聚焦装置，用于通过检测随摄影透镜的变化位置而改变的对象图像对比度信号，将摄影镜头移动到最佳聚焦位置。 当检测到的对比度信号的电平变得小于阈值电平时，该装置在无限距离拍摄位置与最小距离拍摄位置之间移动时停止摄影镜头。 本发明比较了第一信号，其被设置为对应于拍摄镜头要停止的位置，以及当对比度信号电平小于预设阈值电平时产生的第二信号。
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公开(公告)号：US4445757A
公开(公告)日：1984-05-01
申请号：US422443
申请日：1982-09-23
申请人： Shigeo Enomoto , Hitoshi Hirobe , Shinji Urata
发明人： Shigeo Enomoto , Hitoshi Hirobe , Shinji Urata
CPC分类号： G02B7/10
摘要： A zooming device for a camera, which comprises a rocker which operates a plurality of successively operable switches provided on each side of the center of rotation. The rocker can be turned in either direction to operate the first one of the plurality of switches so as to obtain zooming by a corresponding multiple lens group in the corresponding direction and at a predetermined speed. The zooming speed can be changed to a next speed when a second one of the switches is operated by further turning of the rocker.
摘要翻译： 一种用于照相机的变焦装置，其包括操纵设置在旋转中心的每一侧上的多个可连续操作的开关的摇杆。 摇杆可以沿任一方向转动以操作多个开关中的第一个，以便通过相应的多个透镜组在相应的方向和以预定的速度获得变焦。 当通过进一步转动摇杆操作第二个开关时，变焦速度可以改变到下一个速度。
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公开(公告)号：US4792866A
公开(公告)日：1988-12-20
申请号：US123289
申请日：1987-11-20
申请人： Hitoshi Hirobe , Kaoru Adachi
发明人： Hitoshi Hirobe , Kaoru Adachi
CPC分类号： H04N9/802 , H04N1/2112 , H04N2201/3264
摘要： In a still picture recording apparatus such as an electronic still camera, an audio signal compressed in its time base is recorded on a magnetic disk together with a video signal. In order to relate the timing of recording the audio signal to that of the video signal, the audio signal to be recorded is processed in an audio signal processing circuit in response to the manipulation of a manual switch, and the video signal to be recorded is processed in a video signal processing circuit after a required delay time relative to the audio signal, so that the audio signal and the video signal can be recorded in matching relation without the possibility of mismanipulation and without the need for troublesome recording procedures.
摘要翻译： 在诸如电子静态照相机的静止图像记录装置中，以时基压缩的音频信号与视频信号一起被记录在磁盘上。 为了将音频信号的记录定时与视频信号的定时相关联，将响应于手动开关的操纵在音频信号处理电路中处理要记录的音频信号，并且要记录的视频信号是 在相对于音频信号的所需延迟时间之后在视频信号处理电路中进行处理，使得音频信号和视频信号可以以匹配关系记录，而不需要不正确的操作，并且不需要麻烦的记录过程。
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公开(公告)号：US4558367A
公开(公告)日：1985-12-10
申请号：US434270
申请日：1982-09-30
申请人： Shinji Urata , Hitoshi Hirobe , Kohei Iketani
发明人： Shinji Urata , Hitoshi Hirobe , Kohei Iketani
CPC分类号： G02B7/36 , H04N5/23212
摘要： An automatic focusing device for video camera in which the distance between a lens mounting section of a camera body and the imaging plane of an imaging unit is varied for focusing by moving at least either a lens mounting section or the imaging plane along the optical axis. The device comprises focus detector for receiving the data about an object through a light splitter and driving circuit for varying the distance between lens mounting section and imaging plane according to the output of the focus detector.
摘要翻译： 一种用于摄像机的自动聚焦装置，其中相机主体的透镜安装部分和成像单元的成像平面之间的距离通过沿着光轴移动透镜安装部分或成像平面来改变聚焦。 该装置包括：聚焦检测器，用于通过光分离器和驱动电路接收关于物体的数据，根据焦点检测器的输出改变透镜安装部分和成像平面之间的距离。
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公开(公告)号：US4535364A
公开(公告)日：1985-08-13
申请号：US320029
申请日：1981-11-10
申请人： Hitoshi Hirobe
发明人： Hitoshi Hirobe
CPC分类号： H04N5/2351
摘要： A television camera of the type having an image pickup element for converting the image of an object to be photographed into an electrical signal having an exposure control circuit with a voltage detector and controlling the exposure according to the voltage level of said electrical signals. A spot selection circuit provides the exposure control apparatus with signals corresponding to a portion of the image less than the entire image. The exposure of the entire image is controlled in accordance with the detected voltage levels of electrical signals corresponding to the image portion.
摘要翻译： 一种电视摄像机，其具有用于将要拍摄的被摄体的图像转换成具有电压检测器的曝光控制电路的电信号的图像拾取元件，并根据所述电信号的电压来控制曝光。 点选择电路为曝光控制装置提供与图像的一部分相对应的信号，该信号小于整个图像。 根据对应于图像部分的电信号的检测电压电平来控制整个图像的曝光。
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