Tsukasa Ogino

Information recording and reproducing apparatus and method in which an information recording or reproducing head seeks a desired track on a recording medium

Method for accessing desired track on disk with plurality of recording zones with head, and apparatus therefore

Optical information recording/reproducing apparatus comprising digital servo device for performing focusing and/or tracking of optical head based on digital information

Information recording and/or reproducing method and apparatus in which seek of a recording and/or reproducing head is corrected on the basis of detected moving velocity

Magnetooptical disc apparatus having single micro-processor for controlling input/output processing of information by causing an interruption in the processing

Information recording/reproducing apparatus for periodically executing servo processing

Automatic loop gain control apparatus

Information recording and/or reproducing apparatus for timing switching of a jumping pulse from an intermittently detected tracking signal

Information recording-reproducing method and apparatus

Digital servo control apparatus