公开(公告)号：US3809806A

公开(公告)日：1974-05-07

申请号：US29860772

申请日：1972-10-18

Applicant: COLUMBIA BROADCASTING SYST INC

Inventor： WALKER R ,  HARRIS W

IPC: G02B26/12 ,  G03B15/00 ,  G03B21/43 ,  G11B7/003 ,  H04N1/047 ,  H04N1/06 ,  H04N5/84 ,  G02B17/00

CPC classification number: H04N5/843 ,  G02B26/122 ,  G03B15/00 ,  G03B21/43 ,  G11B7/0031 ,  H04N1/0473 ,  H04N1/0607 ,  H04N1/0635 ,  H04N1/0664 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/0476 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: The disclosure pertains to an apparatus for recording an image on a film in a scanned horizontal line pattern with a light beam, the scanned pattern being achieved by reflecting the light beam from a moving surface such as an optical spinner. There is disclosed a subsystem for improving the vertical registration of successive lines in the pattern. Means are provided for sensing the beam position at the beginning of a scanline and for developing a position-indicative signal which varies in accordance with the relative vertical position of the beam. The position-indicative signal is compared to a predetermined reference signal which is a function of the desired position of the beam and there is generated a correction signal which depends on the comparison. Further means are provided for vertically deflecting the beam in accordance with the correction signal.

Abstract translation: 本公开涉及一种用于以具有光束的扫描的水平线图案在胶片上记录图像的装置，所述扫描图案通过反射来自诸如光学旋转器的移动表面的光束来实现。 公开了用于改善图案中连续线的垂直配准的子系统。 提供了用于感测扫描线开始处的光束位置并且用于显现根据光束的相对垂直位置变化的位置指示信号的装置。 将位置指示信号与作为波束的期望位置的函数的预定参考信号进行比较，并且产生取决于比较的校正信号。 提供了另外的装置，用于根据校正信号垂直偏转光束。