Inventor
FURUHATA TAKASHI
JP37 patents
⚠️ This page may combine multiple inventors who share the name “FURUHATA TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
33 patentsUS4907081AMar 6, 1990
Compression and coding device for video signals
HITACHI LTD137 citations96
US4210927AJul 1, 1980
Method for transmitting a color video signal on a narrow-band transmission line
HITACHI LTD84 citations95
US5907364AMay 25, 1999
Display device for information signals
HITACHI LTD86 citations94
US4688081AAug 18, 1987
Apparatus for correcting time base error of video signal
HITACHI LTD32 citations93
US4825299AApr 25, 1989
Magnetic recording/reproducing apparatus utilizing phase comparator
HITACHI LTD54 citations92
US4746996AMay 24, 1988
Skew error correction circuit for video signal reproducing apparatus
HITACHI LTD50 citations92
US4568986AFeb 4, 1986
Variable speed playback controller for a video tape recorder
HITACHI LTD40 citations92
US4843493AJun 27, 1989
Rotary head type magnetic recording and reproducing apparatus and method of producing tracking control signals therefor
HITACHI LTD24 citations91
US4916553AApr 10, 1990
Video signal recording and reproducing method and apparatus
HITACHI LTD32 citations90
US5374955ADec 20, 1994
High-definition imaging device, and apparatuses for recording and playing back high-definition picture information
HITACHI LTD20 citations84
US4772950ASep 20, 1988
Method and apparatus for sampling and processing a video signal
HITACHI LTD20 citations81
US4292652ASep 29, 1981
Method of receiving a video signal
HITACHI LTD23 citations81
US5414523AMay 9, 1995
Audio signal recording/reproducing apparatus for recording and reproducing high-definition television system audio signal of a plurality of channels
HITACHI LTD7 citations74
US5323273AJun 21, 1994
Audio signal recording and playback apparatus of magnetic recording and playback apparatus
HITACHI LTD7 citations74
US5239381AAug 24, 1993
Apparatus for recording and reproducing a plurality of television signals of different systems
HITACHI LTD13 citations74
US4954902ASep 4, 1990
Tracking control method and device in rotary head type magnetic recording and reproducing apparatus
HITACHI LTD13 citations74
US4507690AMar 26, 1985
Device for controlling consecutive recording of video information signals from video camera
HITACHI LTD8 citations74
US4366399ADec 28, 1982
Frequency discrimination circuit
HITACHI LTD11 citations74
US4301395ANov 17, 1981
Phase-lock control device
HITACHI LTD16 citations74
US6104865AAug 15, 2000
Video signal recording and/or reproducing apparatus for recording and/or reproducing a signal obtained by converting a number of scanning lines of a video signal
HITACHI LTD14 citations73
US5499145AMar 12, 1996
Magnetic recording apparatus with capability of recording signals of a plurality of different television systems
HITACHI LTD14 citations73
US5280396AJan 18, 1994
Video signal processing apparatus for correcting time base of video signal
HITACHI LTD17 citations73
US5239421AAug 24, 1993
Video signal processing method and apparatus with timebase disturbance correction and dropout compensation
HITACHI LTD7 citations73
US4873582AOct 10, 1989
Video signal and method therefor time axis altering circuit used in a video tape recorder for recording a broadband video signal
HITACHI LTD12 citations73
US3941921AMar 2, 1976
System for converting frequency band of picture signal
HITACHI LTD12 citations73
US4600953AJul 15, 1986
Head switching signal producing circuit for a magnetic recording and reproducing apparatus
HITACHI LTD8 citations72
US4599569AJul 8, 1986
Method and apparatus for detecting a phase or frequency error of a signal
HITACHI LTD8 citations71
US5699471ADec 16, 1997
Magnetic recording and reproducing apparatus of video signals
HITACHI LTD2 citations63
US5272519ADec 21, 1993
Recording/reproducing apparatus employing sum and difference sequential circuitry for lines adjacent in the second or third dimensional direction followed by time base conversion circuitry
HITACHI LTD3 citations63
US4972335ANov 20, 1990
Video signal recording and reproducing apparatus and method suitable for recording video signals including horizontal scanning line signals
HITACHI LTD6 citations63
US4967161AOct 30, 1990
Signal processing method and apparatus
HITACHI LTD6 citations63
US4642708AFeb 10, 1987
Magnetic recording and reproducing apparatus
HITACHI LTD1 citations51
US4004082AJan 18, 1977
Method and system for multiplexing signal for transmission
HITACHI LTD1 citations51