Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1990-10-31
1994-03-01
Nguyen, Hoa T.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
369 14, G11B 1304
Patent
active
052914623
ABSTRACT:
There is disclosed an improved optically readable disk having an optically readable portion arranged on said disk so as to be readable by an optical reading unit and a magnetically readable and writable portion arranged on said disk so as to be both readable and writable by a magnetic read/write unit. The magnetically readable and writable portion of the disk preferably includes data or information recorded thereon defining a desired playback parameter and/or sequence for the data or information optically recorded on the optically readable portion of the disk. Also disclosed is an improved optical disk playback apparatus comprising a drive unit for rotatably driving an optical disk, an optical reading unit operatively arranged for reading data optically recorded on said disk as said disk is rotated and a magnetic read/write unit operatively arranged for both magnetically reading data from and magnetically writing data to a magnetically readable and writable portion of said disk as said disk is rotated. An improved method of playing back data or information optically recorded on a magneto-optical disk is also disclosed.
REFERENCES:
patent: Re30416 (1980-10-01), Yasunaga
patent: 4210785 (1980-07-01), Huber et al.
patent: 4210940 (1980-07-01), Prysby et al.
patent: 4496993 (1985-01-01), Sugiyama et al.
patent: 4627038 (1986-12-01), Abed et al.
patent: 4680748 (1987-07-01), Kobayashi
patent: 4706237 (1987-11-01), Nakayama
patent: 4730299 (1988-03-01), Kamoshita et al.
patent: 4740938 (1988-04-01), Bierhoff et al.
patent: 4779252 (1988-10-01), Custers et al.
patent: 4817068 (1989-03-01), Yamauchi
patent: 4862439 (1989-08-01), Ando et al.
patent: 4872151 (1989-10-01), Smith
patent: 4873586 (1989-10-01), Ishikawa et al.
patent: 4894814 (1990-01-01), Yamada et al.
patent: 5197048 (1993-03-01), Yoshimoto et al.
Hoagland, "Video Disk with updating feature", IBM Tech. Discl. Bulletin, vol. 22, No. 3, Aug. 1979, p. 1183.
Jordan, "Optical/Magnetic Storage Disk System", IBM Tech. Discl. Bulletin, vol. 25, No. 2, Jul. 1982, pp. 459-460.
LandOfFree
Optical disk having playback parameters recorded thereon and met does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical disk having playback parameters recorded thereon and met, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk having playback parameters recorded thereon and met will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-584242