Information recording method and apparatus for determining wheth

Details Information recording method and apparatus for determining wheth Information recording method and apparatus for determining wheth

1992-12-16

1996-01-16

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 54, 369 58, 360114, G11B 1100

Patent

active

054854334

ABSTRACT:
A method of recording new information on a recording medium on which information was previously recorded is performed as follows. The new information is stored in a memory. The new information is overwritten onto a portion of the recording medium where the old information was recorded by scanning the recording medium with a light beam. A signal including both the old information and the new information is reproduced from the light beam reflected by the recording medium simultaneously with the overwriting. A signal component corresponding to the new information is extracted from the reproduced signal. The extracted signal component is compared with the new information stored in the memory. It is determined on the basis of a comparison result whether or not the recording has been correctly performed.

REFERENCES:
patent: 4688204 (1987-08-01), Noyes, Jr. et al.
patent: 4879703 (1989-11-01), Kaku et al.
patent: 5189650 (1993-02-01), Watanabe et al.

Affiliated with

Also associated with

Rating

Information recording method and apparatus for determining wheth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Information recording method and apparatus for determining wheth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information recording method and apparatus for determining wheth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-314764