Inventor
YOSHIZAWA AKIHIKO
JP26 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIZAWA AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
15 patentsUS6163288ADec 19, 2000
Digital-to-analog converter in which an analog output of low order bits is attenuated, and added to an analog output of high order bits
TOSHIBA KK57 citations96
US6259290B1Jul 10, 2001
Delay locked loop having a mis-lock detecting circuit
TOSHIBA KK46 citations92
US6246271B1Jun 12, 2001
Frequency multiplier capable of generating a multiple output without feedback control
TOSHIBA KK52 citations92
US6005420ADec 21, 1999
Frequency multiplying circuit having a greater multiplying ratio
TOSHIBA KK27 citations92
US5955902ASep 21, 1999
Frequency multiplier using a voltage controlled delay circuit
TOSHIBA KK31 citations92
US5909474AJun 1, 1999
Phase-locked loop system
TOSHIBA KK34 citations92
US5594391AJan 14, 1997
N-stage ring connected voltage controlled oscillator
TOSHIBA KK50 citations92
US6538490B2Mar 25, 2003
Offset compensation circuit and offset compensation method
TOSHIBA KK14 citations84
US6177846B1Jan 23, 2001
Ring oscillator type voltage controlled oscillator
TOSHIBA KK16 citations84
US6011444AJan 4, 2000
Voltage controlled oscillator circuit
TOSHIBA KK16 citations84
US6784719B2Aug 31, 2004
Level shift circuit for transmitting signal from leading edge to trailing edge of input signal
TOSHIBA KK17 citations82
US6696828B2Feb 24, 2004
Integrated circuit and lot selection system therefor
TOSHIBA KK7 citations74
US6323738B1Nov 27, 2001
Voltage-controlled ring oscillator with level converting and amplitude control circuits
TOSHIBA KK12 citations74
US6853256B2Feb 8, 2005
Voltage controlled oscillator with reference current generator
TOSHIBA KK4 citations61
US6611177B2Aug 26, 2003
Voltage controlled oscillator including fluctuation transmitter for transmitting potential fluctuation by noise
TOSHIBA KK6 citations61
OLYMPUS OPTICAL CO
10 patentsUS5898167AApr 27, 1999
Optical pick-up head and integrated type optical unit for use in optical pick-up head
OLYMPUS OPTICAL CO18 citations92
US5814807ASep 29, 1998
Optical pick-up head and integrated type optical unit for use in optical pick-up head
OLYMPUS OPTICAL CO24 citations92
US5566142AOct 15, 1996
Apparatus using an optical pickup
OLYMPUS OPTICAL CO28 citations92
US4841510AJun 20, 1989
Optical characteristic measuring apparatus for an optical recording medium substrate
OLYMPUS OPTICAL CO24 citations92
US4837758AJun 6, 1989
Magneto-optical recording reproducing device having field applying means
OLYMPUS OPTICAL CO35 citations92
US5631774AMay 20, 1997
Polarizing beam splitter and optical pick-up head comprising the same
OLYMPUS OPTICAL CO14 citations74
US5432760AJul 11, 1995
Method of measuring phase difference of opto-magnetic record medium and apparatus for carrying out said method
OLYMPUS OPTICAL CO12 citations74
US4792227ADec 20, 1988
Apparatus for measuring the refractive index of a substrate for an optical recording medium and method of measuring the same
OLYMPUS OPTICAL CO17 citations74
US5028774AJul 2, 1991
Method and apparatus for detecting and measuring the refractive index of an optical disc substrate
OLYMPUS OPTICAL CO7 citations71
US4788678ANov 29, 1988
Optical information recording media substrate
OLYMPUS OPTICAL CO1 citations52