Inventor
ETO YOSHIZUMI
33 patents
⚠️ This page may combine multiple inventors who share the name “ETO YOSHIZUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
24 patentsUS5282045AJan 25, 1994
Depth-of-field control apparatus and image pickup apparatus having the same therein
HITACHI LTD183 citations99
US5159452AOct 27, 1992
Video signal transmitting method and equipment of the same
HITACHI LTD219 citations99
US5047852ASep 10, 1991
Adaptive transform encoder for digital image signal in recording/reproducing apparatus
HITACHI LTD77 citations96
US4970707ANov 13, 1990
Optical tape apparatus with a tracking control mechanism and/or a focusing control mechanism
HITACHI LTD64 citations96
US4825291AApr 25, 1989
Solid-state televison camera with storage time controller
HITACHI LTD30 citations93
US4963992AOct 16, 1990
Apparatus for recording/reproducing digital video signals in both a standard mode and a long playing mode
HITACHI LTD30 citations92
US4653052AMar 24, 1987
Method for decoding double-encoding codes and apparatus using the same
HITACHI LTD52 citations92
US4628297ADec 9, 1986
Code modulation system
HITACHI LTD30 citations92
US4737863AApr 12, 1988
Method for distributing and recording video signals and an apparatus using the same
HITACHI LTD31 citations89
US4802192AJan 31, 1989
Circuit for detecting synchronizing code
HITACHI LTD19 citations81
US4775897AOct 4, 1988
Dubbing method and apparatus for digital recording reproducing apparatus including direct digital outputs
HITACHI LTD21 citations81
US4700240AOct 13, 1987
Digital data playback system
HITACHI LTD21 citations81
US5247401ASep 21, 1993
Replay equalization circuit in digital image recorder
HITACHI LTD20 citations79
US5113247AMay 12, 1992
Solid state image pickup apparatus for correcting discrepancy of registration
HITACHI LTD14 citations74
US4652942AMar 24, 1987
Method and system for converting binary data using bit-divided encoding
HITACHI LTD7 citations74
US4698811AOct 6, 1987
Method and apparatus for generating error correction codes for digitized picture signal recording/reproducing
HITACHI LTD9 citations73
US3999011ADec 21, 1976
Method and system for controlling electron beam quantity in camera tube
HITACHI LTD18 citations73
US3975657AAug 17, 1976
Method of and apparatus for controlling amount of electron beam in image pickup tube
HITACHI LTD16 citations73
US5552940ASep 3, 1996
Method and apparatus for digital signal recording and/or reproduction
HITACHI LTD11 citations71
US4983965AJan 8, 1991
Demodulation apparatus
HITACHI LTD5 citations63
US3973079AAug 3, 1976
Two-level picture signal transmission system
HITACHI LTD4 citations62
US4088391AMay 9, 1978
Irregular ferroelectric element devised for single domain-wall motion
HITACHI LTD4 citations61
US4046455ASep 6, 1977
Irregular ferroelectric element devised for motion of plural domain-walls
HITACHI LTD5 citations61
US3936146AFeb 3, 1976
Irregular ferroelectric element for controllable single domain
HITACHI LTD5 citations61
HITACHI ELECTRONICS
7 patentsUS5978651ANov 2, 1999
Method for bidirectionally transmitting digital video signal and digital video signal bidirectional transmission system
HITACHI ELECTRONICS79 citations94
US6345390B1Feb 5, 2002
Bidirectional digital signal transmission system and repeater for the same
HITACHI ELECTRONICS27 citations92
US6252898B1Jun 26, 2001
Spread spectrum communication method and system wherein data rate of data to be transmitted is changed in accordance with transmission quality
HITACHI ELECTRONICS33 citations92
US5701581ADec 23, 1997
Method for bidirectionally transmitting digital video signal and digital video signal bidirectional transmission system
HITACHI ELECTRONICS33 citations91
US4409627AOct 11, 1983
Video signal decoding circuit
HITACHI ELECTRONICS19 citations82
US4367495AJan 4, 1983
Method and apparatus for magnetic recording and reproduction of digital signal
HITACHI ELECTRONICS22 citations82
US4791495ADec 13, 1988
Digital signal recording and reproducing system having an interface for dubbing a color television signal in the component form
HITACHI ELECTRONICS14 citations73