Toshihisa Deguchi

Person

Nara, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical memory apparatus
- Patent number 6,055,223
- Issue date Apr 25, 2000
- Sharp Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical memory element
- Patent number 5,828,649
- Issue date Oct 27, 1998
- Sharp Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing a magneto-optical memory element
- Patent number 5,809,005
- Issue date Sep 15, 1998
- Sharp Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory medium with preformed pit arrangement
- Patent number 5,754,523
- Issue date May 19, 1998
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory medium with predetermined guide tracks and prepits
- Patent number 5,666,345
- Issue date Sep 9, 1997
- Sharp Kabushiki Kaisha
- Akira Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical memory apparatus utilizing edges or recording mark...
- Patent number 5,546,364
- Issue date Aug 13, 1996
- Sharp Kabushiki Kaisha
- Hiroshi Fuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory medium with preformed pit arrangement
- Patent number 5,477,524
- Issue date Dec 19, 1995
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory element and manufacturing method thereof
- Patent number 5,470,694
- Issue date Nov 28, 1995
- Sharp Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and device for data management in optical recording medium
- Patent number 5,432,768
- Issue date Jul 11, 1995
- Sharp Kabushiki Kaisha
- Shigeo Terashima
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk recording and reproducing device
- Patent number 5,420,838
- Issue date May 30, 1995
- Sharp Kabushiki Kaisha
- Shigemi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking system for optical disc memory using tracking error signal...
- Patent number 5,412,630
- Issue date May 2, 1995
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing device
- Patent number 5,365,501
- Issue date Nov 15, 1994
- Sharp Kabushiki Kaisha
- Hiroshi Fuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing device with reproduction and...
- Patent number 5,361,247
- Issue date Nov 1, 1994
- Sharp Kabushiki Kaisha
- Hiroshi Fuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory device having guide tracks shaped for increasing the...
- Patent number 5,341,362
- Issue date Aug 23, 1994
- Sharp Kabushiki Kaisha
- Yoshikazu Fujii
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical retrieval system for encoding pit angular data and optical...
- Patent number 5,331,623
- Issue date Jul 19, 1994
- Sharp Kabushiki Kaisha
- Hirotsugu Matoba
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk recording and reproducing apparatus
- Patent number 5,301,174
- Issue date Apr 5, 1994
- Sharp Kabushiki Kaisha
- Hirotsugu Matoba
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for recording and reproducing information on and from an...
- Patent number 5,278,814
- Issue date Jan 11, 1994
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and device for data management in an optical recording medium
- Patent number 5,274,617
- Issue date Dec 28, 1993
- Sharp Kabushiki Kaisha
- Shigeo Terashima
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical retrieval system for encoding pit angular data and optical...
- Patent number 5,200,941
- Issue date Apr 6, 1993
- Sharp Kabushiki Kaisha
- Hirotsugu Matoba
- G11 - INFORMATION STORAGE
Information Patent Grant
Cartridge case
- Patent number 5,196,978
- Issue date Mar 23, 1993
- Sharp Kabushiki Kaisha
- Junichi Washo
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk recording/reproducing device utilizing a constant angu...
- Patent number 5,182,741
- Issue date Jan 26, 1993
- Sharp Kabushiki Kaisha
- Shigemi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser driving circuit with control circuit power volt...
- Patent number 5,170,389
- Issue date Dec 8, 1992
- Sharp Kabushiki Kaisha
- Tomiyuki Numata
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital signal reproduction apparatus for reading magneto-optical d...
- Patent number 5,166,838
- Issue date Nov 24, 1992
- Sharp Kabushiki Kaisha
- Hiroshi Fuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing device
- Patent number 5,142,521
- Issue date Aug 25, 1992
- Sharp Kabushiki Kaisha
- Shigeo Terashima
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording/reproducing device using permissible ranges for t...
- Patent number 5,107,473
- Issue date Apr 21, 1992
- Sharp Kabushiki Kaisha
- Hiroshi Fuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory device with grooves and pits in selected dimensional...
- Patent number 5,107,486
- Issue date Apr 21, 1992
- Sharp Kabushiki Kaisha
- Tetsuya Inui
- G11 - INFORMATION STORAGE
Information Patent Grant
Track access and laser beam alignment system for an optical recordi...
- Patent number 5,107,472
- Issue date Apr 21, 1992
- Sharp Kabushiki Kaisha
- Tsuneo Fujiwara
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk recording/reproducing device
- Patent number 5,093,820
- Issue date Mar 3, 1992
- Sharp Kabushiki Kaisha
- Shigemi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Feedback control apparatus in an optical recording and reproducing...
- Patent number 5,084,848
- Issue date Jan 28, 1992
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical head utilizing central and peripheral portions of r...
- Patent number 5,081,614
- Issue date Jan 14, 1992
- Sharp Kabushiki Kaisha
- Akira Takahashi
- G11 - INFORMATION STORAGE

Toshihisa Deguchi

Person

Patents Grantslast 30 patents

Optical memory apparatus

Magneto-optical memory element

Method for manufacturing a magneto-optical memory element

Optical memory medium with preformed pit arrangement

Optical memory medium with predetermined guide tracks and prepits

Magneto-optical memory apparatus utilizing edges or recording mark...

Optical memory medium with preformed pit arrangement

Optical memory element and manufacturing method thereof

Method and device for data management in optical recording medium

Disk recording and reproducing device

Tracking system for optical disc memory using tracking error signal...

Information recording and reproducing device

Information recording and reproducing device with reproduction and...

Optical memory device having guide tracks shaped for increasing the...

Optical retrieval system for encoding pit angular data and optical...

Optical disk recording and reproducing apparatus

Apparatus for recording and reproducing information on and from an...

Method and device for data management in an optical recording medium

Optical retrieval system for encoding pit angular data and optical...

Cartridge case

Optical disk recording/reproducing device utilizing a constant angu...

Semiconductor laser driving circuit with control circuit power volt...

Digital signal reproduction apparatus for reading magneto-optical d...

Recording/reproducing device

Optical recording/reproducing device using permissible ranges for t...

Optical memory device with grooves and pits in selected dimensional...

Track access and laser beam alignment system for an optical recordi...

Optical disk recording/reproducing device

Feedback control apparatus in an optical recording and reproducing...

Magneto-optical head utilizing central and peripheral portions of r...