P

Inventor

HOSHINO TAKASHI

JP88 patents
⚠️ This page may combine multiple inventors who share the name “HOSHINO TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

24 patents
US6483791B1Nov 19, 2002

Laser drive integrated circuit and optical disk apparatus using the same

HITACHI LTD52 citations96
US6414932B1Jul 2, 2002

Information recording/reproducing apparatus with laser driver

HITACHI LTD48 citations96
US6721261B2Apr 13, 2004

Information recording/reproducing apparatus with laser driver

HITACHI LTD20 citations93
US6654328B2Nov 25, 2003

Information recording/reproducing apparatus with laser driver

HITACHI LTD27 citations93
US6552987B1Apr 22, 2003

Optical disk apparatus wherein recording clock signal is stopped being supplied to semiconductor laser drive circuit on optical pickup during reproduction operation

HITACHI LTD25 citations93
US5388090AFeb 7, 1995

Method, apparatus, and medium for recording information in data sections having number of bytes which increases with increase in circumference of tracks on medium

HITACHI LTD26 citations93
US5210735AMay 11, 1993

Optical recording/reproducing system, having function of detecting dirt deposition on optical pickup

HITACHI LTD29 citations93
US4309726AJan 5, 1982

Muting circuit in a PCM recording and reproducing apparatus

HITACHI LTD56 citations93
US6687208B2Feb 3, 2004

Laser drive integrated circuit and optical disk apparatus using the same

HITACHI LTD24 citations92
US6674702B2Jan 6, 2004

Laser drive integrated circuit and optical disk apparatus using the same

HITACHI LTD18 citations92
US6442118B1Aug 27, 2002

Information recording and reproducing apparatus having semiconductor laser drive circuitry in its pickup

HITACHI LTD38 citations92
US6636472B2Oct 21, 2003

Laser drive unit and information recording/reproducing apparatus

HITACHI LTD26 citations90
US6487154B1Nov 26, 2002

Laser drive unit and information recording/reproducing apparatus

HITACHI LTD32 citations90
US4590524AMay 20, 1986

Multitrack PCM reproducing apparatus

HITACHI LTD22 citations82
US4539605ASep 3, 1985

PCM Tape recording and reproducing apparatus having a dropout-immune data recording format

HITACHI LTD24 citations82
US4497055AJan 29, 1985

Data error concealing method and apparatus

HITACHI LTD26 citations82
US6954410B2Oct 11, 2005

Information recording and reproducing apparatus for updating the waveform of a laser based on position information

HITACHI LTD10 citations74
US5751689AMay 12, 1998

Information recording medium

HITACHI LTD11 citations74
US5586108ADec 17, 1996

Information recording medium and information record regenerating device therefor

HITACHI LTD18 citations74
US5539723AJul 23, 1996

Method, apparatus, and medium for recording information in data sections having number of bytes which increase in circumference of tracks on medium

HITACHI LTD10 citations74
US5459710AOct 17, 1995

Apparatus for recording information in data sections having number of bytes which increases with increase in circumference of tracks on medium

HITACHI LTD8 citations74
US4682152AJul 21, 1987

Digital data companding

HITACHI LTD13 citations74
US4367499AJan 4, 1983

Tape searching device in PCM recording and reproducing apparatus

HITACHI LTD7 citations74
US4238770ADec 9, 1980

Vertical synchronizing signal detector circuit

HITACHI LTD19 citations74

MITSUBA CORP

7 patents

MITSUBA ELECTRIC MFG CO

6 patents

NIPPON TELEGRAPH & TELEPHONE

2 patents

HARNESS SYST TECH RES LTD

2 patents

FUJI XEROX CO LTD

2 patents

FUJI PHOTO FILM CO LTD

2 patents

BRIDGESTONE CORP

2 patents

BRIDGESTONE TIRE CO LTD

1 patent

MITSUBISHI ELECTRIC CORP

1 patent

SUMITOMO ELECTRIC INDUSTRIES

1 patent

Showing the top 50 of 88 patents by PatentIndex Score.