Detecting magnetooptic and intensity-modulated optical signals w

Details Detecting magnetooptic and intensity-modulated optical signals w Detecting magnetooptic and intensity-modulated optical signals w

1989-12-11

1992-04-14

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, G11B 700

Patent

active

051054159

ABSTRACT:
A magnetooptic player reads magnetooptically recorded signals on a disk by using a differential detector. Intermediate areas on a storage member used to store the magnetooptically record signals are sector marks and ID fields formed by undulations in the surface of the disk. Such sector marks and ID fields are read by detecting the intensity modulation in a reading light beam; for detecting such embossed marks and D-ROM disks, one-half of the differential detector is disabled for facilitating such detection in a differentially arranged detector.

REFERENCES:
patent: 4337534 (1982-06-01), Basilico et al.
patent: 4446548 (1984-05-01), Bouwhuis et al.
patent: 4617654 (1986-10-01), Gross et al.
patent: 4688203 (1987-08-01), Koishi et al.
patent: 4691308 (1987-09-01), Takagi et al.
patent: 4750163 (1988-06-01), Yamamiya et al.
patent: 4785167 (1988-11-01), Madrid
patent: 4823220 (1989-04-01), Milster et al.
patent: 4833662 (1989-05-01), Yoda
patent: 4847824 (1989-07-01), Davie
patent: 4953124 (1990-08-01), Koyama
Electronic Design News, Nov. 26, 1987, p. 231.
Hamamatsu Photo Diode Application Example, p. 40, Mar. 1987.

Affiliated with

Also associated with

Rating

Detecting magnetooptic and intensity-modulated optical signals w does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detecting magnetooptic and intensity-modulated optical signals w, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting magnetooptic and intensity-modulated optical signals w will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2355166