Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Alcatel Thomson Gigadisc Patents Assignee: Alcatel Thomson Gigadisc Address: Paris, FR No. of patents: 3 Patents: Patent Number Title Of Patent Date Issued 4955008 Prewritten data storage medium and optical scanning device therefor September 4, 1990 Data is stored on a prewritten optical data storage medium along a track made up of adjacent elements. A scanning light spot focussed on the medium has to be able to access any element to write, read or modify data there. Prewritten patterns on the medium define a radial graduation scale 4868804 Optical memory system which uses a different illumination mode when scanning reserved areas September 19, 1989 The present invention relates to optical memories for storing data on the surface of an information-supporting medium including pre-formatted patterns. Such a memory may constitute a random access mass memory, and it may be read/write memory or it may be a write-once memory. The operatio 4809251 Prewritten data storage medium and optical scanning device therefor February 28, 1989 Data is stored on a prewritten optical data storage medium along a track made up of adjacent elements. A scanning light spot focussed on the medium has to be able to access any element to write, read or modify data there. Prewritten patterns on the medium define a radial graduation scale       Recently Added Patents Method of assembling a guard rail Method for in-line monitoring of via/contact holes etch process based on test structures in semiconductor wafer manufacturing Liquid crystal panel and electronic apparatus Telecommunications test plugs having tuned near end crosstalk Reset circuit and reset method Pair of shoe soles Relative brightness adjustment for LCD driver ICs   Randomly Featured Patents Volatile memory elements with elevated power supply levels for programmable logic device integrated circuits Gelatinous compositions formed from hydroxyaluminoxane, solid compositions formed therefrom, and the use of such compositions as catalyst components Metatarsal forefoot support Methods and apparatus for inspecting contact openings in a plasma processing system Paper roll holder Apparatus and methods for monitoring contamination of an optical component in an optical system Process for the production of carboxylic acid esters Computationally efficient means for optimal control with control constraints Dual magnetoresistive head for reproducing very narrow track width short wavelength data Reducing the number of trim links needed on multi-channel analog integrated circuits © 2006. PatentGenius. All Rights Reserved.