Inventor
NAKAGAWA ISAO
JP44 patents
⚠️ This page may combine multiple inventors who share the name “NAKAGAWA ISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
29 patentsUS7339895B2Mar 4, 2008
Gateway device and control method for communication with IP and IPV6 protocols
HITACHI LTD117 citations98
US5760820AJun 2, 1998
Digital signal transmission system with priority information forcing display of text on a receiver
HITACHI LTD100 citations97
US5218436AJun 8, 1993
Processing circuit for a plurality of different TV signals
HITACHI LTD156 citations97
US6840448B2Jan 11, 2005
Portable information processing apparatus
HITACHI LTD30 citations92
US6657666B1Dec 2, 2003
Method and apparatus for recording image information
HITACHI LTD39 citations92
US5353065AOct 4, 1994
Apparatus for receiving wide/standard picture plane television signal
HITACHI LTD34 citations92
US4860090AAug 22, 1989
Digital signal processing circuit driven by a switched clock and used in television receiver for processing standard and nonstandard television signals
HITACHI LTD35 citations92
US4853765AAug 1, 1989
Sequential scanning converter with frame comb filter and freeze frame feature
HITACHI LTD30 citations92
US4794454ADec 27, 1988
Movement detection circuit of a video signal used in a television receiver
HITACHI LTD28 citations92
US4754322AJun 28, 1988
YC-signal separation circuit responsive to magnitude of vertical correlation
HITACHI LTD36 citations92
US4733300AMar 22, 1988
Contour signal correction circuit for television receiver
HITACHI LTD36 citations92
US4733297AMar 22, 1988
Video signal processing circuit of motion adaptive type
HITACHI LTD26 citations92
US5249037ASep 28, 1993
Image signal correction circuit and image signal processor using the circuit
HITACHI LTD41 citations91
US4739390AApr 19, 1988
Television signal processing circuit
HITACHI LTD32 citations91
US4924305AMay 8, 1990
Motion detecting circuit for video signal processing using correlation techniques
HITACHI LTD34 citations89
US4707732ANov 17, 1987
Separating circuit of luminance and chrominance signals for TV receiver selecting between three three line comb filters
HITACHI LTD19 citations74
US4128848ADec 5, 1978
Automatic ghost-suppression system
HITACHI LTD19 citations74
US5016111AMay 14, 1991
Television signal recording/reproducing apparatus of color-under recording type
HITACHI LTD10 citations73
US4821112AApr 11, 1989
Detection circuit for detecting standard television signals and nonstandard television signals
HITACHI LTD20 citations73
US4775888AOct 4, 1988
Motion detector for chrominance signal in TV receiver
HITACHI LTD14 citations73
US4736252AApr 5, 1988
Motion detector for chrominance signal in TV receiver
HITACHI LTD14 citations73
US4405937ASep 20, 1983
Chrominance signal reproducing apparatus
HITACHI LTD11 citations73
US4205335AMay 27, 1980
Circuit arrangement for separating chrominance and luminance information in a composite video signal of an NTSC system
HITACHI LTD12 citations73
US4291335ASep 22, 1981
Vertical synchronizing signal detector
HITACHI LTD3 citations63
US3988775AOct 26, 1976
Ghost signal suppressing device for television receiver set
HITACHI LTD3 citations63
US4634995AJan 6, 1987
Electronic circuitry utilizing an inerted Darlington amplifier output stage to be operable with a low supply voltage
HITACHI LTD6 citations62
US4456885AJun 26, 1984
Filter circuit suitable for being fabricated into integrated circuit
HITACHI LTD4 citations62
US4242602ADec 30, 1980
Phase comparator circuit with gated isolation circuit
HITACHI LTD5 citations62
US4607292AAug 19, 1986
Automatic phase control color signal circuit for video tape recorders operating in the NTSC or PAL systems
HITACHI LTD3 citations58
SUBARU CORP
4 patentsUS11565569B2Jan 31, 2023
Heater apparatus
SUBARU CORP0 citations54
US12002937B2Jun 4, 2024
Vehicle and non-contact power feeding apparatus
SUBARU CORP0 citations52
US11912162B2Feb 27, 2024
Battery management system for electric vehicles and electric vehicle
SUBARU CORP0 citations52
US10994631B2May 4, 2021
Vehicle power supply apparatus
SUBARU CORP0 citations52