P

Inventor

OGASAWARA YUTAKA

JP38 patents
⚠️ This page may combine multiple inventors who share the name “OGASAWARA YUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

13 patents
US5937427AAug 10, 1999

Information recording apparatus and method capable of efficient erase, write and verify processes

CANON KK169 citations98
US6147943ANov 14, 2000

Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods

CANON KK27 citations92
US5825729AOct 20, 1998

Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods

CANON KK21 citations92
US5537552AJul 16, 1996

Apparatus for selectively comparing pointers to detect full or empty status of a circular buffer area in an input/output (I/O) buffer

CANON KK47 citations92
US5233578AAug 3, 1993

Method of recording information on a recording medium having at least two magnetic layers

CANON KK32 citations92
US6049516AApr 11, 2000

Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods

CANON KK5 citations74
US5500840AMar 19, 1996

Method and apparatus for accessing reading and/or writing means to a desired region on an information recording medium on which a plurality of tracks are spirally formed, in accordance with an estimated arrival position

CANON KK7 citations74
US5257248AOct 26, 1993

Information recording apparatus capable of efficiently verifying recording information

CANON KK19 citations74
US4982074AJan 1, 1991

Method of recording position information of last track recorded with data in directory area

CANON KK17 citations74
US5018124AMay 21, 1991

Information recording method and apparatus for recording information on track positioned at least two tracks ahead when abnormality of tracking servo is detected

CANON KK17 citations73
US5038332AAug 6, 1991

Optical information recording medium including an optically detectable mark representing a boundary between the recording and non-recording areas

CANON KK5 citations62
US4910724AMar 20, 1990

Information recording medium having an area for recording information indicating logical erasure of data and method for recording information

CANON KK6 citations62
US5144608ASep 1, 1992

Apparatus for recording and reproducing information on and from a recording medium having a reference position mark

CANON KK1 citations51

TOYODA GOSEI KK

12 patents

SONY CORP

5 patents

YUKAWA SHUHEI

2 patents

ALPS ELECTRIC CO LTD

2 patents

TOYO BOSEKI

1 patent

OGASAWARA YUTAKA

1 patent

FUJINO MASATOSHI

1 patent

YAMAKAWA HISAO

1 patent