公开(公告)号：US3819911A

公开(公告)日：1974-06-25

申请号：US29929572

申请日：1972-10-20

Applicant: RCA CORP

Inventor： GREENAWAY D

IPC: G06K19/06 ,  A61F13/20 ,  G03H1/00 ,  G03H1/16 ,  G03H1/22 ,  G06K7/10 ,  G06K7/12 ,  G06K19/16 ,  G07F7/08 ,  G06K9/00 ,  G06K19/08

CPC classification number: G07F7/086 ,  G06K7/10831 ,  G06K19/16

Abstract: Cards employing a light-modifying portion containing doubly encoded numbers are responsive to the illumination thereof for deriving a binary encoded pattern of light spots lying respectively on the circumference of either of two concentric circles. By rotating the pattern about its center or by rotating the light sensing elements about an appropriate axis, solely two light sensors are required for decoding, regardless of the total number of bit positions of the code. The light-modifying portion may be a hologram.

Abstract translation: 采用包含双重编号的光修改部分的卡响应于其照明，用于导出分别位于两个同心圆之一的圆周上的光点的二进制编码图案。 通过围绕其中心旋转图案或通过围绕适当的轴旋转光感测元件，无论代码的位位置的总数如何，仅需要两个光传感器进行解码。 光修改部分可以是全息图。

公开(公告)号：US3814904A

公开(公告)日：1974-06-04

申请号：US29929472

申请日：1972-10-20

Applicant: RCA CORP

Inventor： RUSSELL J ,  GREENAWAY D

IPC: G06K19/06 ,  G02B27/00 ,  G06K7/01 ,  G06K19/16 ,  G07F7/08 ,  G09C5/00 ,  G06K7/10 ,  G08C9/06

CPC classification number: G07F7/086 ,  G06K19/16

Abstract: A light-modifying portion divided into a plurality of discrete subareas each of which is occupied by an assigned light-modifying form, such as a prism of selected inclination, produces a pattern in accordance with a code of output light beams during decoding which manifests the code. The meridional angle of the form may also be assigned in accordance with the code. Redundancy is optionally obtainable in that the total plurality of subareas may be divided into groups of subareas, each member of one particular group possessing the same selected inclination and meridional angle and by using an imaging lens during decoding to focus ones of the output light beams derived from the total plurality of discrete subareas to a common focus point.

Abstract translation: 被分成多个离散子区域的光修改部分，每个子区域被诸如所选择的倾斜度的棱镜之类的所分配的光修正形式占据，在解码期间根据输出光束的代码产生图案， 码。 形式的子午角也可以根据代码分配。 可选地可以获得冗余，因为总的多个子区域可以被划分为子区域的组，一个特定组的每个成员具有相同的所选择的倾斜度和子午角，并且在解码期间通过使用成像透镜来聚焦衍射的输出光束 从多个离散子区域到共同的焦点。

公开(公告)号：US3746783A

公开(公告)日：1973-07-17

申请号：US3746783D

申请日：1970-09-28

Applicant: RCA CORP

Inventor： GERRITSEN H ,  GREENAWAY D

IPC: G03H1/00 ,  H04N5/76 ,  H04N7/00 ,  G02B27/00

CPC classification number: G03H1/028 ,  G03H1/00 ,  G03H2001/0482 ,  G03H2001/0497 ,  G03H2001/2655 ,  G03H2210/20 ,  G03H2222/18 ,  G03H2270/22 ,  H04N5/7605 ,  H04N5/90

Abstract: Hologram record pressings having impressions thereon of a type homologous to the impressions of phonograph record pressings may be made from phase hologram master recordings by techniques the same as or similar to those employed in making conventional phonograph record pressings. Such a hologram record pressing may include a large number of separate small holograms, which may be used to play back motion pictures over a suitable playback equipment. Such playback equipment may include illuminating means for producing a primary beam of spatially coherent monochromatic light and shutterless means for moving the record with respect to the illuminating means to continuously illuminate in sequence the holograms while they are being moved. The playback equipment further includes light responsive hologram information utilization means, such as a closed circuit television system, having an information-carrying secondary beam derived from the illuminated holograms continuously applied as an input thereto.

Abstract translation: 具有与留声机记录压印的印象同源的类型的印象的全息记录压印可以通过与制作常规留声机记录压制中使用的技术相同或类似的技术由相位全息图主记录制成。 这样的全息图记录按压可以包括大量单独的小全息图，其可以用于通过合适的回放设备来播放动态图像。 这样的回放设备可以包括用于产生空间相干单色光的主光束的照明装置和用于相对于照明装置移动记录的快门装置，以在全息图被移动的同时连续照亮全息图。 回放设备还包括光响应全息图信息利用装置，例如闭路电视系统，具有从作为其输入连续施加的照明全息图得到的信息载体二次光束。