公开(公告)号：US3735028A

公开(公告)日：1973-05-22

申请号：US3735028D

申请日：1972-03-17

Applicant: RCA CORP

Inventor： PRITCHARD D ,  SEPP W

IPC: H01J31/46 ,  H04N9/077 ,  H04N9/06

CPC classification number: H01J31/46 ,  H04N9/077

Abstract: Light from a scene is directed through the faceplate of an image pickup device having an electron gun operative to produce an electron beam. The light impinges upon a layered target structure including a photoconductor and a conductive signal electrode. The target structure is comprised of a first and second plurality of spaced parallel elongated areas. The widths of the first and second plurality of spaced parallel elongated areas in the direction of scanning differing cyclically from smaller widths to progressively larger widths back to smaller widths of varying conductivity such that the scanning of an electron beam across the target structure produces a composite video signal containing a color information signal representative of the color of the image formed on the target and an index signal whose frequency is less than the color information signal and is representative of the first and second plurality of spaced parallel elongated areas. Means are provided for separating the video signal information from the index signal.

Abstract translation: 来自场景的光被引导通过具有电子枪的图像拾取装置的面板，其操作以产生电子束。 光照射在包括感光体和导电信号电极的分层目标结构上。 目标结构由第一和第二多个间隔开的平行细长区域组成。 在扫描方向上的第一和第二多个间隔开的平行细长区域的宽度周期性地从较小宽度逐渐变大到逐渐变大的宽度，从而导致变化的导电率的较小宽度，使得跨过目标结构的电子束的扫描产生复合视频 信号，其包含表示形成在目标上的图像的颜色的颜色信息信号和频率小于颜色信息信号的代表第一和第二多个间隔开的平行细长区域的索引信号。 提供了用于将视频信号信息与索引信号分离的装置。