Browse Prior Art Database

Chip Positioning

IP.com Disclosure Number: IPCOM000040866D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Brady, JT: AUTHOR

Abstract

The data storage media such as a semiconductor or holographic chip has an array of optical images formed on its surface. The array can be either a rectangular array of rows and columns or a hexagonal or circular array of alternating rows and columns. Recording areas are disposed intermediate the positioning images. A light beam position on a chip for fabrication or upon a data storage chip for data storage is determined by two of the reflecti spots. First and second light sources and paired detectors, which are spaced apart in a precise manner, sense the reflected light for differentially positioning a light beam on the chip with respect to any two of the positioning images. The reflective light is used by a control mechanism for finally adjusting the media positioning with respect to the light beams for precise areal access.

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Chip Positioning

The data storage media such as a semiconductor or holographic chip has an array of optical images formed on its surface. The array can be either a rectangular array of rows and columns or a hexagonal or circular array of alternating rows and columns. Recording areas are disposed intermediate the positioning images. A light beam position on a chip for fabrication or upon a data storage chip for data storage is determined by two of the reflecti spots. First and second light sources and paired detectors, which are spaced apart in a precise manner, sense the reflected light for differentially positioning a light beam on the chip with respect to any two of the positioning images. The reflective light is used by a control mechanism for finally adjusting the media positioning with respect to the light beams for precise areal access.

Disclosed anonymously

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