Inventor
MUTO TAKAYASU
JP25 patents
⚠️ This page may combine multiple inventors who share the name “MUTO TAKAYASU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
21 patentsUS6144517ANov 7, 2000
Magnetic disk device and method of manufacturing same
SONY CORP50 citations96
US5907448AMay 25, 1999
Magnetic disk device and method of manufacturing same having convex recordings regions, concave guard bands, and impressed concavities and convexities representing control signals
SONY CORP52 citations96
US6463060B1Oct 8, 2002
Signal processing circuit
SONY CORP47 citations95
US6259694B1Jul 10, 2001
Signal processing circuit
SONY CORP16 citations92
US6144627ANov 7, 2000
Data recording and reproducing apparatus and method with phase error detection
SONY CORP20 citations92
US5436770AJul 25, 1995
Disc recording and/or reproducing apparatus having an enlarged locking range for correctly phased internal channel clocks
SONY CORP34 citations92
US5434725AJul 18, 1995
Magnetic disc driving device for controlling the position of a magnetic head relative to the disc
SONY CORP23 citations92
US5196970AMar 23, 1993
Magnetic disc apparatus
SONY CORP53 citations92
US5894463AApr 13, 1999
Focusing servo controlling apparatus
SONY CORP34 citations91
US6445718B1Sep 3, 2002
Serial interface circuit
SONY CORP17 citations84
US5523987AJun 4, 1996
Disc driving apparatus capable of reproducing the track address by forming phase error data using wobble pits peak sum signal
SONY CORP19 citations84
US4974109ANov 27, 1990
Hard disk drive employing a reference track to compensate for tracking error
SONY CORP22 citations82
US5629912AMay 13, 1997
Focusing servo controlling apparatus
SONY CORP17 citations81
US5191568AMar 2, 1993
Disc drive apparatus with tracking control based on multiple reference tracks and with automatic seek time adjustment
SONY CORP20 citations80
US7299127B2Nov 20, 2007
Shared oscillator for vehicle mirror display
SONY CORP13 citations75
US6580711B1Jun 17, 2003
Serial interface circuit and signal processing method of the same
SONY CORP9 citations74
US6381240B1Apr 30, 2002
Signal processing circuit and method of signal processing
SONY CORP7 citations74
USRE35302EJul 23, 1996
Magnetic disc apparatus
SONY CORP8 citations73
US7333533B2Feb 19, 2008
Communication device
SONY CORP2 citations60
US7053825B2May 30, 2006
Communication device
SONY CORP3 citations54
US7388898B2Jun 17, 2008
Communication device
SONY CORP0 citations42
TAKADA MASAYUKI
4 patentsUS8099772B2Jan 17, 2012
Information terminal apparatus, information processing apparatus and information communication system
TAKADA MASAYUKI27 citations92
US8539232B2Sep 17, 2013
Information terminal apparatus, information processing apparatus and information communication system
TAKADA MASAYUKI3 citations62
US8489881B2Jul 16, 2013
Information terminal apparatus, information processing apparatus and information communication system
TAKADA MASAYUKI4 citations62
US8695080B2Apr 8, 2014
Information terminal apparatus, information processing apparatus and information communication system
TAKADA MASAYUKI0 citations52