Inventor

BRACHT ROGER R

US6 patents

⚠️ This page may combine multiple inventors who share the name “BRACHT ROGER R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OPTICAL STORAGE INT

2 patents

US4606016AAug 12, 1986

Write protection and data detection using differential detector

OPTICAL STORAGE INT38 citations91

US4594717AJun 10, 1986

Driver circuit for laser diode

OPTICAL STORAGE INT13 citations65

OPTOTECH INC

2 patents

US4700056AOct 13, 1987

Objective lens focus initialization system

OPTOTECH INC37 citations88

US4680594AJul 14, 1987

Single beam direct read during write and write protect system for use in an optical data storage system

OPTOTECH INC24 citations79

LASER MAGNETIC STORAGE INT

2 patents

US4882721ANov 21, 1989

Offset for protection against amorphous pips

LASER MAGNETIC STORAGE INT18 citations72

US4695994ASep 22, 1987

Method and apparatus for varying laser intensity level

LASER MAGNETIC STORAGE INT13 citations68