公开(公告)号：US4575626A

公开(公告)日：1986-03-11

申请号：US504319

申请日：1983-06-14

申请人： Kenichi Oinoue ,  Kenji Kimura ,  Masatoshi Ida

发明人： Kenichi Oinoue ,  Kenji Kimura ,  Masatoshi Ida

IPC分类号： G03B13/36 ,  G02B7/34 ,  G01J1/20

CPC分类号： G02B7/34

摘要： An apparatus for detecting focus conditions of an imaging optical system is disclosed. The apparatus comprises a light flux dividing means having a plurality of light flux dividing elements arranged at a predetermined focal plane or near a plane conjugated therewith, a photoelectric conversion means having a plurality of light receiving elements arranged to receive light fluxes divided by respective light flux dividing elements in line therewith and means for detecting focus conditions of the imaging optical system based on the outputs of the light receiving elements. The photoelectronic conversion means is so arranged that the cross-section of light fluxes incident upon respective light receiving elements at the exit pupil of the imaging optical system includes regions which are not overlapped with each other.

摘要翻译： 公开了一种用于检测成像光学系统的聚焦条件的装置。 该装置包括具有布置在预定焦平面或与其共轭的平面附近的多个光束分割元件的光束分割装置，具有多个光接收元件的光电转换装置，所述光接收元件布置成接收由相应光通量分开的光束 与其分开的元件和用于基于光接收元件的输出来检测成像光学系统的焦点条件的装置。 光电转换装置被布置成使得入射到成像光学系统的出射光瞳处的各个光接收元件的光束的横截面包括彼此不重叠的区域。

公开(公告)号：US4316657A

公开(公告)日：1982-02-23

申请号：US52225

申请日：1979-06-26

申请人： Takeomi Suzuki ,  Masatoshi Ida ,  Hideyuki Kenjyo

发明人： Takeomi Suzuki ,  Masatoshi Ida ,  Hideyuki Kenjyo

IPC分类号： H04N5/232 ,  G01C3/32 ,  G02B7/36 ,  G11B7/09 ,  H04N5/335 ,  H04N5/351 ,  H04N5/378 ,  G03B3/10 ,  G01J1/44 ,  G03B19/12

CPC分类号： G11B7/0917 ,  G01C3/32 ,  G02B7/36 ,  G11B7/0908

摘要： An apparatus for comparing analog signals delivered from a number of light detecting elements with analog signals delivered from a digital-analog converter by means of a plurality of comparator circuits whose output analog signals are supplied as write enable signals to a plurality of digital memories which are controlled by means of digital signals delivered from a central control circuit such that an illumination intensity information of each picture element is read out as the digital signal in the digital memories, thereby obtaining a signal of detecting a focal point of cameras or the like optical devices.

摘要翻译： 一种用于将从多个光检测元件传送的模拟信号与从数模转换器传送的模拟信号进行比较的装置，该多个比较器电路将输出模拟信号作为写使能信号提供给多个数字存储器， 通过从中央控制电路传送的数字信号进行控制，使得每个像素的照明强度信息作为数字存储器中的数字信号被读出，从而获得检测照相机等的光学装置的焦点的信号 。

公开(公告)号：US4195319A

公开(公告)日：1980-03-25

申请号：US972808

申请日：1978-12-26

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： G11B15/087 ,  G11B15/093 ,  G11B27/22 ,  G11B15/43

CPC分类号： G11B27/22

摘要： An apparatus for detecting information index signal from magnetic tape comprises a tape take-up shaft driven for rotation at a uniform rate during a tape rewind or rapid advance to take up the magnetic tape on which a plurality of information items are recorded, a first pulse generator responsive to the rotation of the take-up shaft to produce reference pulses, a second pulse generator responsive to the rotation of a tape supply shaft which rotates as the tape runs to produce pulses at a rate which depends on the varying tape speed, a logic circuit for converting a ratio of the number of pulses generated per unit time by the pulse generators into a voltage value, a detecting head for detecting a signal-free area between adjacent information items recorded on the magnetic tape, a pulse counter for counting clock pulses during the time the signal-free area is being detected, and a comparator for converting the number of clock pulses counted into a corresponding voltage value and for producing a count signal for information retrieval upon coincidence between the both voltage values.

摘要翻译： 一种用于从磁带检测信息索引信号的装置包括一个磁带卷取轴，其在磁带重绕或快速前进期间以均匀的速率驱动，以便卷取其上记录有多个信息项的磁带，第一个脉冲 发生器响应于卷取轴的旋转以产生参考脉冲;第二脉冲发生器响应于磁带供应轴的旋转，当磁带运行时旋转，以便以取决于变化的磁带速度的速率产生脉冲， 逻辑电路，用于将由脉冲发生器产生的每单位时间脉冲数的比率转换为电压值;检测头，用于检测记录在磁带上的相邻信息项之间的无信区;计数时钟的脉冲计数器 在检测无信号区域的时间内的脉冲，以及用于将计数的时钟脉冲数转换成相应的电压值并用于产生的比较器 在两个电压值之间符合时，产生用于信息检索的计数信号。

公开(公告)号：US4701605A

公开(公告)日：1987-10-20

申请号：US828708

申请日：1986-02-12

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： G02B7/38 ,  G01J1/36

CPC分类号： G02B7/38

摘要： An apparatus and method for detecting focus condition of an imaging optical system is disclosed. The apparatus comprises means for dividing a light flux transmitted through the imaging optical system into two sub-light fluxes, first and second light receiving element arrays disposed in front of and at the rear of a predetermined focal plane or a plane conjugated therewith and each having a plurality of light receiving elements, a light flux dividing optical system arranged at the light incident side of the light receiving element arrays for partially cutting incident light and constructed in such a manner that images projected upon respective light receiving element arrays by respective light fluxes transmitted mainly through first and second regions of the imaging optical system, which are divided by a plane including an optical axis of the imaging optical system, are shifted in the array direction in accordance with the amount of defocused condition, means for obtaining first and second evaluation functions representing image sharpness and third and fourth evaluation functions representing image lateral shift by processing outputs of the first and second light receiving element arrays, and means for deciding the defocused condition and the in-focused condition by arithmetically operating all evaluation functions.

摘要翻译： 公开了一种用于检测成像光学系统的聚焦条件的设备和方法。 该装置包括用于将通过成像光学系统传输的光束分成两个子光束的装置，设置在预定焦平面的前面和后面的第一和第二光接收元件阵列或与之共轭的平面，每个具有 多个光接收元件，光束分配光学系统，其布置在光接收元件阵列的光入射侧，用于部分地切割入射光，并且以这样的方式构造，使得通过相应光束投射到各个光接收元件阵列上的图像被透射 主要通过由包括成像光学系统的光轴的平面划分的成像光学系统的第一和第二区域根据散焦条件的量沿阵列方向移动，用于获得第一和第二评估的装置 表示图像清晰度的函数和第三和第四评估函数r 通过处理第一和第二光接收元件阵列的输出来呈现图像横向偏移，以及用于通过算术地操作所有评估函数来决定散焦状态和聚焦状态的装置。

公开(公告)号：US4556908A

公开(公告)日：1985-12-03

申请号：US454052

申请日：1982-12-28

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： H04N5/335 ,  H04N5/341 ,  H04N5/355 ,  H04N5/374 ,  H04N5/30

CPC分类号： H04N3/155

摘要： A solid state image sensor comprises an image sensing matrix comprised of a number of photoelectric elements arranged in a matrix array and a scanning circuit for two-dimensionally scanning the image sensing matrix by scanning signals to extract image signals. Picture element selection circuits are connected to horizontal and vertical lines of the image sensing matrix to pick up the output signals of photoelectric elements as photometric signals.

摘要翻译： 固态图像传感器包括由矩阵阵列中布置的多个光电元件组成的图像感测矩阵和用于通过扫描信号二维扫描图像感测矩阵以提取图像信号的扫描电路。 图像元素选择电路连接到图像感测矩阵的水平和垂直线以拾取光电元件的输出信号作为测光信号。

公开(公告)号：US4274116A

公开(公告)日：1981-06-16

申请号：US927831

申请日：1978-07-25

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： G11B15/087 ,  G11B5/03 ,  G11B5/035 ,  G11B5/45 ,  G11B5/02

CPC分类号： G11B5/035 ,  G11B5/03

摘要： A tape recorder having a tape speed changing mechanism comprises a magnetic recording and reproducing head, an oscillation circuit connected to the head, an equalizing circuit connected to the oscillation circuit, means for changing an AC bias in response to a tape speed in accordance with a reference voltage which is switched by a speed changing switch of a motor and means for changing a circuit constant of the equalization circuit by a switch which is interlocked with the speed changing switch.

摘要翻译： 具有磁带速度改变机构的磁带记录器包括磁记录和再现磁头，连接到磁头的振荡电路，连接到振荡电路的均衡电路，用于根据磁带速度改变交流偏压的装置 由电动机的变速开关切换的参考电压和用于通过与变速开关互锁的开关来改变均衡电路的电路常数的装置。

公开(公告)号：US4599653A

公开(公告)日：1986-07-08

申请号：US529612

申请日：1983-09-06

申请人： Kenji Kimura ,  Masatoshi Ida

发明人： Kenji Kimura ,  Masatoshi Ida

IPC分类号： H04N5/225 ,  H04N5/232 ,  H04N5/30

CPC分类号： H04N5/23212

摘要： A focus indicator for a TV camera includes a first image sensor and a video processor which convert an object image to a first video signal, an optical system for exit pupil dividing part of the object image to prepare a split image, and a second image sensor for converting the split image to a second video signal. A composing circuit generates a composite video signal from the first and second video signals in such a way as to include the split image component, and a viewfinder displays an image including the split image. A user of the TV camera thus can perform focusing by observing the split image in the viewfinder.

摘要翻译： 电视摄像机的聚焦指示器包括第一图像传感器和将对象图像转换为第一视频信号的视频处理器，用于将对象图像的一部分进行出射光瞳分割以准备分割图像的光学系统，以及第二图像传感器 用于将分割图像转换为第二视频信号。 合成电路以包括分割图像分量的方式从第一和第二视频信号生成复合视频信号，并且取景器显示包括分割图像的图像。 因此，电视摄像机的用户可以通过观察取景器中的分割图像来进行聚焦。

公开(公告)号：US4270152A

公开(公告)日：1981-05-26

申请号：US1189

申请日：1979-01-05

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： G11B5/54 ,  G11B15/02 ,  G11B15/087 ,  G11B15/44 ,  G11B27/22 ,  G11B15/12

CPC分类号： G11B5/54 ,  G11B15/02 ,  G11B15/444 ,  G11B27/22

摘要： Provided is a magnetic tape reproduction device which comprises a tape driving circuit for driving a magnetic tape, first and second reproducing heads disposed respectively in correspondence to first and second tracks of the magnetic tape, and an auto-reverse circuit for automatically reversing the magnetic tape by detecting a terminal end thereof. The auto-reverse circuit sets the second reproducing head to a mode of reproduction when the first reproducing head reproducing the recorded information of the magnetic tape has detected that an output signal corresponding to a non-signal portion of the magnetic tape continues to be generated for a specified period of time, and, when the second reproducing head set to the mode of reproduction has detected that an output signal corresponding to a non-signal portion of the magnetic tape continues to be generated for a specified period of time, supplies a reverse signal to the tape driving circuit.

摘要翻译： 提供一种磁带再现装置，其包括用于驱动磁带的带驱动电路，分别对应于磁带的第一和第二磁道设置的第一和第二再现磁头以及用于自动反转磁带的自动反向电路 通过检测其末端。 当再现磁带的记录信息的第一再现头检测到与磁带的非信号部分相对应的输出信号继续产生时，自动反转电路将第二再现头设置为再现模式， 并且当设定为再现模式的第二重放头已经检测到与磁带的非信号部分相对应的输出信号在指定的时间段内继续产生时，提供反向 信号到磁带驱动电路。

公开(公告)号：US5012362A

公开(公告)日：1991-04-30

申请号：US205165

申请日：1988-06-10

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： G11B5/024 ,  G11B5/55

CPC分类号： G11B5/024 ,  G11B5/5521 ,  G11B5/556

摘要： An apparatus of the invention is capable of shifting a transducer, such as a head for erasing, reproducing and recording information on a track formed on a recording medium, with fine positioning accuracy and high access speed. Further, the apparatus is capable of entirely erasing information to be erased on the medium by shifting the transducer with a desired degree while the transducer is excited for erasing operation. In the apparatus, a motion converting means, such as a disc cam or a helically grooved cylindrical cam, is employed for converting a primary rotating motion to a secondary stepwise motion so as to shift the transducer, presenting substantial dead band characteristics for the shifting motion. Further, a control means is employed for shifting the transducer over an area covering an information recorded track and the portions adjacent thereto to execute the erasing operation for an extended area along the track to be erased.

摘要翻译： 本发明的装置能够以精确的定位精度和高存取速度，在形成在记录介质上的轨道上移动诸如用于擦除，再现和记录信息的磁头的换能器。 此外，当换能器被激发以进行擦除操作时，该装置能够完全擦除在介质上要被擦除的信息以便以期望的程度移动换能器。 在该装置中，使用诸如盘式凸轮或螺旋槽式圆柱形凸轮的运动转换装置将初级旋转运动转换成次级逐步运动，以便使换能器移动，从而为换档运动提供大量死区特性 。 此外，采用控制装置在覆盖信息记录轨道的区域和与其相邻的部分上的区域上移动换能器，以沿着要被擦除的轨道的延伸区域执行擦除操作。

公开(公告)号：US4827365A

公开(公告)日：1989-05-02

申请号：US77594

申请日：1987-07-24

申请人： Masatoshi Ida

发明人： Masatoshi Ida

IPC分类号： G11B21/08 ,  G11B5/55

CPC分类号： G11B21/08

摘要： An assembly for accessing information recording tracks of an information storage medium comprises a transducer for recording and/or reproducing information; a transducer support carriage for advancing the transducer; a driving force generator for producing a driving force to shift the carriage; and motion converting means for converting an input motion from the driving force generating means to an output motion to be transmitted to the carriage. The motion converting means includes a cam with a spiraling peripheral surface having a plurality of fine step pitch shifting regions for precise tracking control and at least one rough pitch shifting region for shifting the transducer quickly from track to track on the recording medium.

摘要翻译： 用于访问信息存储介质的信息记录轨道的组件包括用于记录和/或再现信息的换能器; 换能器支撑托架，用于推进换能器; 用于产生用于移动滑架的驱动力的驱动力发生器; 以及运动转换装置，用于将来自驱动力产生装置的输入运动转换成要传送到托架的输出运动。 运动转换装置包括具有螺旋外围表面的凸轮，该凸轮具有用于精确跟踪控制的多个精细级间距移位区域和至少一个用于使换能器在记录介质上从轨道到轨道快速移位的粗略俯仰移位区域。