Inventor
OWASHI HITOAKI
JP113 patents
⚠️ This page may combine multiple inventors who share the name “OWASHI HITOAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
42 patentsUS6163644ADec 19, 2000
Method and apparatus for receiving and/or reproducing digital signal
HITACHI LTD103 citations99
US7096486B1Aug 22, 2006
TV program selection support system
HITACHI LTD331 citations98
US5912969AJun 15, 1999
Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information
HITACHI LTD95 citations98
US6249532B1Jun 19, 2001
Interactive chargeable communication system with billing system therefor
HITACHI LTD101 citations97
US6801713B1Oct 5, 2004
Recorded program viewing support method
HITACHI LTD70 citations96
US6041161AMar 21, 2000
Input-output circuit, recording apparatus and reproduction apparatus for digital video signal
HITACHI LTD50 citations96
US5878010AMar 2, 1999
Method and apparatus for recording digital signal
HITACHI LTD41 citations96
US5825969AOct 20, 1998
Information management apparatus for inhibiting reproduction in a video cassette recorder
HITACHI LTD30 citations96
US5719943AFeb 17, 1998
Digital information signal transmitting/receiving method and system
HITACHI LTD70 citations96
US5699370ADec 16, 1997
Information recording and reproduction apparatus to be controlled by temporal information
HITACHI LTD49 citations96
US6002694ADec 14, 1999
Interactive chargeable communication system with billing system therefor
HITACHI LTD77 citations95
US6600870B1Jul 29, 2003
Input-output circuit, recording apparatus and reproduction apparatus for digital video signal
HITACHI LTD23 citations93
US6321025B1Nov 20, 2001
Method and apparatus for receiving and/or reproducing digital signal
HITACHI LTD19 citations93
US6201654B1Mar 13, 2001
Method and apparatus for recording digital signal
HITACHI LTD24 citations93
US5875279AFeb 23, 1999
Subscriber terminal of an interactive communication system and control device thereof
HITACHI LTD29 citations93
US5337199AAug 9, 1994
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD35 citations93
US4688081AAug 18, 1987
Apparatus for correcting time base error of video signal
HITACHI LTD32 citations93
US6363210B1Mar 26, 2002
Communication system for encrypted data and apparatus for selectively recording and reproducing received analog signal and received digital signal
HITACHI LTD25 citations92
US6339676B1Jan 15, 2002
Video signal recording and reproducing apparatus compatible with analog and digital video signal recording and reproducing
HITACHI LTD20 citations92
US5903704AMay 11, 1999
Apparatus for selectively recording and reproducing received analog and digital signals
HITACHI LTD26 citations92
US4746996AMay 24, 1988
Skew error correction circuit for video signal reproducing apparatus
HITACHI LTD50 citations92
US4926361AMay 15, 1990
Digital noise reducer
HITACHI LTD29 citations91
US4916553AApr 10, 1990
Video signal recording and reproducing method and apparatus
HITACHI LTD32 citations90
US7310823B2Dec 18, 2007
Digital information recording apparatus and outputting apparatus
HITACHI LTD13 citations84
US6134384AOct 17, 2000
Digital signal recording/reproducing apparatus and recording method
HITACHI LTD16 citations84
US4772950ASep 20, 1988
Method and apparatus for sampling and processing a video signal
HITACHI LTD20 citations81
US7343012B2Mar 11, 2008
Recording and playback apparatus for stream data and transmission method for stream data
HITACHI LTD8 citations74
US7319808B2Jan 15, 2008
Input-output circuit, recording apparatus and reproduction apparatus for digital video signal
HITACHI LTD6 citations74
US6757478B2Jun 29, 2004
Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signal
HITACHI LTD5 citations74
US6388831B1May 14, 2002
Apparatus and method for limiting the reproduction of main information
HITACHI LTD3 citations74
US6324025B1Nov 27, 2001
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD2 citations74
US6204985B1Mar 20, 2001
Information management apparatus
HITACHI LTD6 citations74
US6104862AAug 15, 2000
Video signal recording and reproducing apparatus compatible with analog and digital video signal recording and reproducing
HITACHI LTD13 citations74
US6069757AMay 30, 2000
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD2 citations74
US6046872AApr 4, 2000
Method and apparatus for recording digital signal
HITACHI LTD6 citations74
US6031677AFeb 29, 2000
Information management apparatus
HITACHI LTD3 citations74
US6002536ADec 14, 1999
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD2 citations74
US5930274AJul 27, 1999
Information recording and reproduction apparatus to be controlled by temporal information
HITACHI LTD6 citations74
US5671095ASep 23, 1997
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD6 citations74
US5530598AJun 25, 1996
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD8 citations74
US5517368AMay 14, 1996
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD8 citations74
US4481546ANov 6, 1984
Modulator-demodulator for obtaining and demodulating frequency-modulated signal
HITACHI LTD8 citations74
MAXELL LTD
8 patentsUS11798515B2Oct 24, 2023
Display apparatus
MAXELL LTD3 citations84
US10129590B2Nov 13, 2018
Display apparatus and video processing apparatus
MAXELL LTD4 citations84
US12293739B2May 6, 2025
Display apparatus
MAXELL LTD1 citations75
US12062348B2Aug 13, 2024
Display apparatus
MAXELL LTD1 citations73
US11587524B2Feb 21, 2023
Display apparatus
MAXELL LTD1 citations73
US11501735B2Nov 15, 2022
Display apparatus
MAXELL LTD0 citations73
US11308914B2Apr 19, 2022
Display apparatus
MAXELL LTD0 citations73
US10957278B2Mar 23, 2021
Display apparatus
MAXELL LTD1 citations73
Showing the top 50 of 113 patents by PatentIndex Score.