公开(公告)号：US5172239A

公开(公告)日：1992-12-15

申请号：US512997

申请日：1990-04-23

申请人： Tadanori Nakayama ,  Hiroyuki Makuta

发明人： Tadanori Nakayama ,  Hiroyuki Makuta

IPC分类号： G11B15/467 ,  G11B15/473 ,  G11B27/024 ,  G11B27/029 ,  G11B27/32 ,  H04N5/782 ,  H04N9/79

CPC分类号： G11B15/473 ,  G11B15/467 ,  G11B27/029 ,  G11B27/324 ,  G11B2220/90 ,  G11B27/024 ,  H04N5/782 ,  H04N9/79

摘要： A signal generator generates a control signal for use in tracking control of a VTR. The control signal is a composite signal including a reference signal and timing information of a frame signal and a color frame signal, which is formed by changing the duty ratio of the reference signal, having N times (where N is a natural number larger than 2) the frequency of the frame signal and a first duty ratio, to a second duty ratio at a predetermined position and to a third duty ratio at another position during the period of the color frame signal. A signal separator separates the frame signal and the color frame signal from the reproduced control signal by detecting the first or second duty ratio from the control signal, which is generated from the control signal generator, recorded on and reproduced from a video tape.

摘要翻译： 信号发生器产生用于跟踪VTR控制的控制信号。 控制信号是包括参考信号和帧信号和彩色帧信号的定时信息的复合信号，其通过改变具有N次（其中N是大于2的自然数）的参考信号的占空比而形成 ）帧信号的频率和第一占空比，在彩色帧信号的周期期间在另一位置处的预定位置处的第二占空比和第三占空比。 信号分离器通过从记录在录像带上并从录像带再现的控制信号发生器产生的控制信号中检测第一或第二占空比来分离帧信号和彩色帧信号与再生控制信号。

公开(公告)号：US08160440B2

公开(公告)日：2012-04-17

申请号：US13020893

申请日：2011-02-04

申请人： Yuki Kishida ,  Takashi Kokuwa ,  Hiroyuki Makuta

发明人： Yuki Kishida ,  Takashi Kokuwa ,  Hiroyuki Makuta

IPC分类号： G03B35/00 ,  H04N15/00

CPC分类号： G03B35/10 ,  G03B2205/0046 ,  G03B2205/0092 ,  H04N13/239 ,  H04N13/296

摘要： A three-dimensional image pickup apparatus for capturing a three-dimensional image which includes a left-eye image and a right-eye image includes: a first imaging unit having a first optical system and operable to take the left-eye image; a second imaging unit having a second optical system and operable to take the right-eye image; and a controller operable to control the first imaging unit and the second imaging unit. The first optical system and the second optical system individually include a convergence angle changing unit capable of optically changing a convergence angle and a focal length changing unit capable of optically changing a focal length. The controller, when controlling the focal length changing unit to change the focal length, controls the convergence angle changing unit based on a predetermined constant convergence angle tracking curve to keep the convergence angle constant before and after the change of the focal length.

摘要翻译： 一种用于拍摄包括左眼图像和右眼图像的三维图像的三维图像拾取装置包括：第一成像单元，具有第一光学系统，并且可操作以获取左眼图像; 第二成像单元，具有第二光学系统，可操作以取得右眼图像; 以及可操作以控制第一成像单元和第二成像单元的控制器。 第一光学系统和第二光学系统分别包括能够光学地改变会聚角的会聚角度改变单元和能够光学地改变焦距的焦距变化单元。 控制器在控制焦距改变单元以改变焦距时，基于预定的恒定会聚角跟踪曲线来控制会聚角度改变单元，以保持焦距变化之前和之后的会聚角恒定。