Inventor
NISHIMURA KEIZO
JP50 patents
⚠️ This page may combine multiple inventors who share the name “NISHIMURA KEIZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
40 patentsUS5825969AOct 20, 1998
Information management apparatus for inhibiting reproduction in a video cassette recorder
HITACHI LTD30 citations96
US5247523ASep 21, 1993
Code error correction apparatus
HITACHI LTD47 citations96
US4907081AMar 6, 1990
Compression and coding device for video signals
HITACHI LTD137 citations96
US4541091ASep 10, 1985
Code error detection and correction method and apparatus
HITACHI LTD64 citations96
US5636316AJun 3, 1997
Picture signal digital processing unit
HITACHI LTD63 citations95
US5897218AApr 27, 1999
Signal recording/reproducing method and apparatus in which key information for descrambling is recorded in an area on the signal recording medium
HITACHI LTD41 citations93
US5757824AMay 26, 1998
Code error correction apparatus
HITACHI LTD20 citations93
US5337199AAug 9, 1994
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD35 citations93
US4677622AJun 30, 1987
Error correction method and system
HITACHI LTD33 citations92
US4423498ADec 27, 1983
Control apparatus for a recording medium drive motor in a digital information reproducing apparatus
HITACHI LTD28 citations92
US4649542AMar 10, 1987
Digital signal transmission method providing high error correction capability
HITACHI LTD21 citations82
US4539605ASep 3, 1985
PCM Tape recording and reproducing apparatus having a dropout-immune data recording format
HITACHI LTD24 citations82
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
US6069757AMay 30, 2000
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD2 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
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
US5463505AOct 31, 1995
Helical-scan information recording-playback apparatus
HITACHI LTD10 citations74
US4614934ASep 30, 1986
Digital-to-analog converter device for processing PCM signals of different sampling frequencies
HITACHI LTD15 citations74
US4472686ASep 18, 1984
Circuit for reproducing and demodulating modulated digital signals
HITACHI LTD16 citations74
US4363039ADec 7, 1982
Automatic operation control apparatus for a PCM recording and reproducing system
HITACHI LTD10 citations74
US4238770ADec 9, 1980
Vertical synchronizing signal detector circuit
HITACHI LTD19 citations74
US5027209AJun 25, 1991
Interpolation circuit for digital signal processor
HITACHI LTD8 citations71
US4577319AMar 18, 1986
Error flag processor
HITACHI LTD13 citations70
US7286310B2Oct 23, 2007
Apparatus for receiving compressed digital information
HITACHI LTD0 citations63
US7259926B2Aug 21, 2007
Digital information recording/reproducing apparatus
HITACHI LTD1 citations63
US7012769B2Mar 14, 2006
Digital information recording/reproducing apparatus
HITACHI LTD0 citations63
US6731451B2May 4, 2004
Information management apparatus
HITACHI LTD1 citations63
US6278564B1Aug 21, 2001
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD1 citations63
US5862004AJan 19, 1999
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD2 citations63
US5699203ADec 16, 1997
Digital transmission signal processing system and recording reproducing system
HITACHI LTD1 citations63
US5673154ASep 30, 1997
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD3 citations63
US7027240B2Apr 11, 2006
Digital information recording/reproducing method and apparatus
HITACHI LTD0 citations52
US6952315B2Oct 4, 2005
Digital information recording/reproducing apparatus
HITACHI LTD0 citations52
US6590726B2Jul 8, 2003
Apparatus and method for transmitting and receiving digital information
HITACHI LTD0 citations52
US6498691B2Dec 24, 2002
Digital transmission signal processing system and recording/reproducing system
HITACHI LTD0 citations52
ACTION JAPAN INC
4 patentsHITACHI CONSUMER ELECTRONICS
4 patentsUS8009375B2Aug 30, 2011
Apparatus and method for receiving and recording digital information
HITACHI CONSUMER ELECTRONICS0 citations63
US7952823B2May 31, 2011
Method for transmitting digital audio and video information
HITACHI CONSUMER ELECTRONICS0 citations63
US7859777B2Dec 28, 2010
Method and apparatus for transmitting and receiving digital video and audio information
HITACHI CONSUMER ELECTRONICS0 citations52
US7808733B2Oct 5, 2010
Method and apparatus for transmitting and receiving digital video and audio information
HITACHI CONSUMER ELECTRONICS0 citations52