P

Inventor

ASADA AKIHIRO

JP46 patents
⚠️ This page may combine multiple inventors who share the name “ASADA AKIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

26 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
US4435832AMar 6, 1984

Speech synthesizer having speech time stretch and compression functions

HITACHI LTD94 citations95
US4401971AAug 30, 1983

Alarm device for a vehicle including priority control for plural alarm conditions

HITACHI LTD105 citations95
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
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
US4039981AAug 2, 1977

Variable impedance circuit

HITACHI LTD26 citations81
US7298681B2Nov 20, 2007

High-frequency superimposing method and optical disk apparatus using it

HITACHI LTD4 citations74
US6954410B2Oct 11, 2005

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

HITACHI LTD10 citations74
US6810050B2Oct 26, 2004

Laser driver, optical disk apparatus using the same, and laser control method

HITACHI LTD10 citations73
US4256980AMar 17, 1981

Electronic switchover circuit

HITACHI LTD9 citations69
US4794209ADec 27, 1988

Position coordinate determining apparatus

HITACHI LTD12 citations66
US7573797B2Aug 11, 2009

High-frequency superimposing method and optical disk apparatus using it

HITACHI LTD2 citations63
US4179650ADec 18, 1979

Variable impedance circuits

HITACHI LTD6 citations63
US4390747AJun 28, 1983

Speech analyzer

HITACHI LTD5 citations61
US4302833ANov 24, 1981

Automatic record size detector

HITACHI LTD5 citations60
US7570564B2Aug 4, 2009

High-frequency superimposing method and optical disk apparatus using it

HITACHI LTD0 citations52
US7570565B2Aug 4, 2009

High-frequency superimposing method and optical disk apparatus using it

HITACHI LTD0 citations52
US7499478B2Mar 3, 2009

Laser driver, optical disk apparatus using the same, and laser control method

HITACHI LTD0 citations51
US6831885B2Dec 14, 2004

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

HITACHI LTD0 citations42

KUBOTA KK

8 patents

INTERSIL INC

4 patents

REES THEODORE D

3 patents

Intersil Americas LLC

2 patents

HITACHI LG DATA STORAGE INC

1 patent

NIPPON TELEGRAPH & TELEPHONE

1 patent

ASADA AKIHIRO

1 patent