Inventor
SHIGEMORI TOSHIHIRO
JP26 patents
⚠️ This page may combine multiple inventors who share the name “SHIGEMORI TOSHIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
25 patentsUS6345018B1Feb 5, 2002
Demodulation circuit for demodulating wobbling signal
RICOH KK74 citations96
US6693862B1Feb 17, 2004
Recording clock generating apparatus for a data recording system
RICOH KK22 citations92
US6400673B1Jun 4, 2002
Optical disk drive
RICOH KK37 citations92
US6125089ASep 26, 2000
Recording timing control circuit for optical disk driving device
RICOH KK28 citations92
US6061313AMay 9, 2000
Optical disk drive having a time code detection device for reliably detecting a time code of a recordable optical disk
RICOH KK20 citations92
US5438601AAug 1, 1995
Reference clock frequency divider
RICOH KK25 citations92
US5235576AAug 10, 1993
Optical disc apparatus
RICOH KK31 citations92
US5222057AJun 22, 1993
Tracking servo method used in an optical disk drive unit
RICOH KK25 citations92
US4942370AJul 17, 1990
PLL circuit with band width varying in accordance with the frequency of an input signal
RICOH KK52 citations92
US4817069AMar 28, 1989
Tracking control system of an optical pick-up
RICOH KK26 citations92
US6859425B2Feb 22, 2005
Wobble signal detection circuit and optical disk device
RICOH KK17 citations84
US5241521AAug 31, 1993
Optical disk driving apparatus
RICOH KK17 citations74
US5073776ADec 17, 1991
Data modulating system
RICOH KK16 citations74
US5063552ANov 5, 1991
Optical disk apparatus with data transfer rate and rotational speed variable by annular zones
RICOH KK11 citations74
US4835754AMay 30, 1989
Tracking control device of an optical pick-up
RICOH KK17 citations74
US5060214AOct 22, 1991
Optical pickup device keeping coincident the optical axes of the objective lens and of the recording/reproducing beam
RICOH KK7 citations72
US7298216B2Nov 20, 2007
Fine clock resolution digital phase locked loop apparatus
RICOH KK3 citations63
USRE39513EMar 13, 2007
Demodulation circuit for demodulating wobbling signal
RICOH KK4 citations63
US7075868B2Jul 11, 2006
Recording clock generating apparatus for a data recording system
RICOH KK2 citations63
US6980499B1Dec 27, 2005
Data recording clock signal generator for generating a recording clock signal for recording data on a recordable medium
RICOH KK5 citations63
US5272686ADec 21, 1993
Servo signal generator for optical disk driving apparatus
RICOH KK6 citations63
US4816722AMar 28, 1989
Digital phase-locked loop filter
RICOH KK4 citations63
US4814679AMar 21, 1989
Motor speed control
RICOH KK3 citations63
US7630286B2Dec 8, 2009
Digital PLL circuit and optical disk apparatus having digital PLL circuit
RICOH KK2 citations62
US7652540B2Jan 26, 2010
Fine clock resolution digital phase locked loop apparatus
RICOH KK0 citations52