Inventor
OZUE TADASHI
JP51 patents
Patents
50 patentsUS5852534ADec 22, 1998
Tape cassette, tape recording apparatus and tape reproducing apparatus
SONY CORP55 citations96
US6801379B2Oct 5, 2004
Multi-magnetic recording head, and magnetic recording method and magnetic recording apparatus using the same
SONY CORP22 citations92
US6304397B1Oct 16, 2001
Magnetic recording/reproducing apparatus with rotary drum with magnetoresistance head for transducing DC-free code signals
SONY CORP23 citations92
US6243240B1Jun 5, 2001
Non-contact type transmission device and rotary magnetic head unit having the non-contact type transmission device
SONY CORP37 citations92
US5867335AFeb 2, 1999
Autochanger
SONY CORP40 citations92
US5742444AApr 21, 1998
Recording and/or reproducing apparatus for controlling the running speed of a recording tape
SONY CORP38 citations92
US5157650AOct 20, 1992
Optical recording apparatus
SONY CORP25 citations92
US7324303B2Jan 29, 2008
Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions
SONY CORP9 citations84
US5791578AAug 11, 1998
Recording medium device with memory terminals and shutter sized and shaped in relation thereto
SONY CORP17 citations84
US7002777B2Feb 21, 2006
Tape drive head with lower core layer side inclined at angle equal to or greater than azimuth angle and aligned with upper core layer edge
SONY CORP15 citations83
US6038200AMar 14, 2000
Autochanger
SONY CORP16 citations83
US6922298B2Jul 26, 2005
Magnetic tape recording apparatus for recording tracks having same track pitch
SONY CORP8 citations74
US6687071B2Feb 3, 2004
Magnetic tape drive apparatus and magnetic head cleaning method
SONY CORP10 citations74
US6141166AOct 31, 2000
Recording head arrangement for a magnetic recording device having a multichannel recording mode
SONY CORP10 citations74
US5684649ANov 4, 1997
Recording/reproducing apparatus with read-after-write capability
SONY CORP6 citations74
US5559766ASep 24, 1996
Rotary drum tape recording apparatus with controlling optical recording tracks using stored results of scanning of reference tracks
SONY CORP16 citations74
US5265084ANov 23, 1993
Rotary drum assembly with pump-out spiral grooves
SONY CORP9 citations74
US5063555ANov 5, 1991
Rotary optical head
SONY CORP17 citations74
US6515833B1Feb 4, 2003
Rotating drum assembly and magnetic recording/reproducing apparatus having a tape-contact piece
SONY CORP12 citations73
US6429992B1Aug 6, 2002
Non-contact type transmission device and rotary magnetic head unit having the non-contact type transmission device and a bias current control section
SONY CORP11 citations73
US6411473B1Jun 25, 2002
Rotary drum device and magnetic recording/reproducing apparatus having a more protruding inductive magnetic head relative to magnetoresistive head
SONY CORP8 citations73
US6297631B1Oct 2, 2001
Magnetic signal reproducing method and apparatus using magneto-resistive effect element with increased sense current
SONY CORP10 citations73
US5886843AMar 23, 1999
Recording and playback apparatus using a helical-scan-type rotary head
SONY CORP8 citations73
US5287341AFeb 15, 1994
Rotating optical head apparatus
SONY CORP17 citations73
US6704174B2Mar 9, 2004
Magnetic recording and playback device with ESD protection
SONY CORP11 citations71
US5502603AMar 26, 1996
Rotating head type recording/reproducing apparatus which uses wide recording heads to record a single pilot signal over three tracks and preventing overwriting of the pilot signal by the next head scan
SONY CORP14 citations70
US7050265B2May 23, 2006
Negative pressure type rotary head drum unit and magnetic tape drive using the same
SONY CORP5 citations63
US6970325B2Nov 29, 2005
Magnetic head apparatus, magnetic reproducing method, and magnetic reproducing apparatus in linear tape system
SONY CORP4 citations63
US6765738B1Jul 20, 2004
Magnetic reproducing apparatus and method for detecting a degree of wear of magnetic head element
SONY CORP6 citations63
US6657807B1Dec 2, 2003
Magnetic recording/playback apparatus and method
SONY CORP2 citations63
US6522506B1Feb 18, 2003
Apparatus and method for variably projecting a magnetic head element in a magnetic head unit
SONY CORP6 citations63
US6515836B2Feb 4, 2003
Magneto-resistive effect type magnetic head and magnetic tape apparatus
SONY CORP5 citations63
US6081398AJun 27, 2000
Recording/reproducing apparatus with read-after-write capability
SONY CORP5 citations63
US6008961ADec 28, 1999
Recording method of a helical scan system for recording data to a tape-shaped recording medium
SONY CORP2 citations63
US5677803AOct 14, 1997
Apparatus for recording data signals and a signal having a repetitive frequency to a recording medium and/or for reproducing the data signals therefrom
SONY CORP3 citations63
US7292412B2Nov 6, 2007
Rotary head drum apparatus including a rotary drum having a head and a switch for selecting the head and magnetic recording and/or reproducing apparatus using the same
SONY CORP4 citations62
US6813109B2Nov 2, 2004
Rotary magnetic head apparatus for performing reproduction operations using a plurality of reproduction heads without depending on the arrangement of the recording tracks
SONY CORP4 citations62
US6549356B1Apr 15, 2003
Rotary drum and magnetic tape recording/reproducing apparatus using the same
SONY CORP3 citations62
US6356403B2Mar 12, 2002
Rotary magnetic head apparatus having reproduction signal wiring, power-supply wiring and recording signal wiring sections in a rotor and a stator arranged in a predetermined manner
SONY CORP3 citations62
US6229662B1May 8, 2001
Magnetic recording/reproducing apparatus and magnetic tape
SONY CORP2 citations62
US7372655B2May 13, 2008
Information-processing apparatus, information-processing method, programs and recording mediums
SONY CORP2 citations61
US7239466B2Jul 3, 2007
Magnetic head device and magnetic recording device
SONY CORP1 citations52
US7161760B2Jan 9, 2007
Reproducing apparatus and reproducing method for reproducing data by scanning slant tracks using a plurality of reproducing heads
SONY CORP1 citations52
US7075752B2Jul 11, 2006
Magnetic head apparatus, magnetic reproducing method, and magnetic reproducing apparatus in linear tape system
SONY CORP0 citations52
US7057845B2Jun 6, 2006
Reproducing apparatus and reproducing method for reproducing data by scanning slant tracks using a plurality of reproducing heads
SONY CORP1 citations52
US6563664B1May 13, 2003
Magnetic signal recording and reproducing apparatus and magnetic signal recording and reproducing method
SONY CORP1 citations52
US6411456B1Jun 25, 2002
Magnetic signal reproducing method and apparatus
SONY CORP0 citations52
US7323260B2Jan 29, 2008
Lubricant, recording medium and carboxylic acid compound
SONY CORP1 citations49
US6567243B2May 20, 2003
Recording and reproducing apparatus and recording and reproducing method
SONY CORP0 citations42
US7082015B2Jul 25, 2006
Rotary drum and magnetic reproducing apparatus or magnetic recording and reproducing apparatus using the same
SONY CORP0 citations41
Showing the top 50 of 51 patents by PatentIndex Score.