Inventor
HIRAI JUN
JP71 patents
⚠️ This page may combine multiple inventors who share the name “HIRAI JUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
34 patentsUS6850619B1Feb 1, 2005
Copyright protection method, information signal processing system, information signal output apparatus, information signal processing apparatus, information signal output method, information signal processing method, and information signal recording medium
SONY CORP73 citations98
US6266480B1Jul 24, 2001
Apparatus and method for effectively inhibiting unauthorized copying of picture signals which does not interfere with an authorized display thereof
SONY CORP102 citations98
US6263506B1Jul 17, 2001
Data transmission and reception device and system, data transmission method and parameter setting method for data reception device
SONY CORP91 citations98
US6115341ASep 5, 2000
Digital signal recording method and apparatus and digital signal reproduction method and apparatus
SONY CORP52 citations96
US7856143B2Dec 21, 2010
Unauthorized copy preventing device and method thereof, and program
SONY CORP20 citations93
US6839503B1Jan 4, 2005
Transfer apparatus and recording control system using a transfer control method selected based on a transfer rate of data
SONY CORP21 citations93
US6577805B1Jun 10, 2003
Picture recording and reproducing apparatus and method
SONY CORP24 citations93
US6222978B1Apr 24, 2001
Video signal copy guard apparatus and method
SONY CORP25 citations93
US7248784B1Jul 24, 2007
Signal conversion apparatus and method
SONY CORP24 citations92
US7386742B2Jun 10, 2008
Method and apparatus for controlling power to a first and second circuit based on an operational mode and connecting state of an information processing apparatus
SONY CORP9 citations84
US7062068B2Jun 13, 2006
Data processing apparatus, data processing method, and program
SONY CORP19 citations84
US5914754AJun 22, 1999
Video signal aspect ratio conversion apparatus
SONY CORP19 citations84
US4291330ASep 22, 1981
Video signal processing circuit for eliminating an interfering signal
SONY CORP26 citations82
US6933936B1Aug 23, 2005
Information processing apparatus, display control method, and recording medium
SONY CORP11 citations74
US6813436B1Nov 2, 2004
Recording apparatus, recording method and recording medium for preventing illegal duplication
SONY CORP12 citations74
US6701436B1Mar 2, 2004
Information reproducing and recording apparatus and method which permits copying for personal use while protecting a copyright
SONY CORP12 citations74
US4290082ASep 15, 1981
Noise and cross-talk elimination in recording and reproducing video signals
SONY CORP8 citations74
US4165518AAug 21, 1979
Video signal recording and/or reproducing apparatus
SONY CORP11 citations74
US4134126AJan 9, 1979
Color recorder having means for reducing luminance crosstalk in displayed image
SONY CORP18 citations74
US4131912ADec 26, 1978
Apparatus for recording and reproducing video signals on a magnetic tape movable at different speeds
SONY CORP10 citations74
US4513311AApr 23, 1985
Video signal processing unit
SONY CORP15 citations73
US4180833ADec 25, 1979
Apparatus and method for reproducing video signals
SONY CORP13 citations72
US5040082AAug 13, 1991
Recording apparatus
SONY CORP8 citations70
US9294759B2Mar 22, 2016
Display device, method and program capable of providing a high-quality stereoscopic (3D) image, independently of the eye-point location of the viewer
SONY CORP2 citations63
US7751912B2Jul 6, 2010
Replay apparatus and content evaluation method
SONY CORP6 citations63
US7720223B2May 18, 2010
System and method of content copy control
SONY CORP4 citations63
US7433488B2Oct 7, 2008
Information recording medium drive device, information processing apparatus, data replay control system, data replay control method, and computer program
SONY CORP5 citations63
US7409142B2Aug 5, 2008
Receiving apparatus, receiving method, and supplying medium
SONY CORP4 citations63
US7188247B2Mar 6, 2007
System and method of content copy control
SONY CORP1 citations63
US6873787B1Mar 29, 2005
Receiving apparatus, receiving method, and supplying medium
SONY CORP4 citations63
US6456330B1Sep 24, 2002
Remote-controlled transmitter and information transfer system using the same
SONY CORP2 citations63
US5223945AJun 29, 1993
Recording mode discrimination circuit
SONY CORP4 citations63
US5223944AJun 29, 1993
Method and apparatus for transmitting video signals during first and second portions thereof
SONY CORP6 citations63
US4175272ANov 20, 1979
Video signal processing circuitry for compensating different average levels
SONY CORP4 citations62
ROHM CO LTD
6 patentsUS5541999AJul 30, 1996
Audio apparatus having a karaoke function
ROHM CO LTD28 citations93
US5332916AJul 26, 1994
Transmission gate
ROHM CO LTD43 citations93
US5300892AApr 5, 1994
Audio signal amplifier circuit
ROHM CO LTD12 citations74
US5444785AAug 22, 1995
Echo attaching circuit and audio device using the same
ROHM CO LTD9 citations70
US5394474AFeb 28, 1995
Echo attaching circuit and audio device using the same
ROHM CO LTD8 citations69
US5815530ASep 29, 1998
Data converters for sound equipment
ROHM CO LTD5 citations63
MITSUBISHI HEAVY IND LTD
3 patentsUS5915676AJun 29, 1999
Lever-type frictional resistance force variable system
MITSUBISHI HEAVY IND LTD21 citations88
US5168967ADec 8, 1992
Dynamic damper and method for detecting malfunction of dynamic damper
MITSUBISHI HEAVY IND LTD17 citations71
US5272847ADec 28, 1993
Long period pendulum damping equipment
MITSUBISHI HEAVY IND LTD8 citations69
TOSHIBA KK
2 patentsTOKYO ELECTRON LTD
1 patentPANASONIC CORP
1 patentTSUDAKOMA IND CO LTD
1 patentMATSUSHITA ELECTRIC INDUSTRIAL CO LTD
1 patentYAMASHITA NORIYUKI
1 patentShowing the top 50 of 71 patents by PatentIndex Score.