Inventor
LE CARVENNEC FRANCOIS
FR17 patents
⚠️ This page may combine multiple inventors who share the name “LE CARVENNEC FRANCOIS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
THOMSON CSF
11 patentsUS6091697AJul 18, 2000
Optical recording medium having a plurality of recording layers
THOMSON CSF19 citations92
US5475672ADec 12, 1995
Variable-length information recording with reference marks for time reference during information reading
THOMSON CSF20 citations92
US4001635AJan 4, 1977
Electro-optical converter and an optical information recording system comprising such a converter
THOMSON CSF33 citations91
US4387452AJun 7, 1983
Optical device for the recording and reading of data media and optical memory system incorporating such a device
THOMSON CSF46 citations90
US4551733ANov 5, 1985
Protected optical disc comprising a flexible closure element
THOMSON CSF23 citations81
US6452886B1Sep 17, 2002
Antihacking optical recording disc and method for reading same
THOMSON CSF7 citations73
US5864526AJan 26, 1999
Optical focussing adjustment device
THOMSON CSF8 citations73
US4001564AJan 4, 1977
Communication system for disseminating coded digital data in analogue form utilizing an orthogonal transformation
THOMSON CSF14 citations72
US4253115AFeb 24, 1981
Process for the transmission of an audiofrequency analog signal during line-frame synchronization intervals of a television signal and apparatus for performing this process
THOMSON CSF7 citations65
US4001563AJan 4, 1977
Communication system for disseminating coded digital data in analogue form utilizing an orthogonal transformation
THOMSON CSF5 citations57
US6738331B2May 18, 2004
Copy-protected optical disk and protection process for such disk
THOMSON CSF4 citations54
THOMSON BRANDT
5 patentsUS4157931AJun 12, 1979
Process for producing information carrying discs
THOMSON BRANDT43 citations91
US4038524AJul 26, 1977
Data carrier optically readable by transmission and method of manufacturing such a data carrier
THOMSON BRANDT29 citations82
US4037251AJul 19, 1977
Data carrier optically read out by transmission, and method of manufacturing said data carrier
THOMSON BRANDT25 citations82
US4142208AFeb 27, 1979
System for automatically correcting the duty factor of the carrier wave arising from reading-out a data carrier
THOMSON BRANDT23 citations81
US4068258AJan 10, 1978
Method for compressing then expanding a television signal
THOMSON BRANDT22 citations80