Kazuaki Doi

Person

Kawasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Quantum cryptographic communication system, key management inspecti...
- Patent number 12,003,624
- Issue date Jun 4, 2024
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Application-key management system, application-key management devic...
- Patent number 11,764,952
- Issue date Sep 19, 2023
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum communication device, quantum communication system, and qua...
- Patent number 11,265,157
- Issue date Mar 1, 2022
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key generation device, key generation method, and computer program...
- Patent number 11,115,198
- Issue date Sep 7, 2021
- Kabushiki Kaisha Toshiba
- Ririka Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum key distribution device, quantum key distribution system, a...
- Patent number 10,348,492
- Issue date Jul 9, 2019
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Decoding apparatus, decoding method, and computer program product
- Patent number 10,256,838
- Issue date Apr 9, 2019
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum communication device, quantum communication method, and com...
- Patent number 9,652,620
- Issue date May 16, 2017
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum communication device, quantum communication method, and com...
- Patent number 9,569,731
- Issue date Feb 14, 2017
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Parity check matrix creation method, encoding apparatus, and record...
- Patent number 9,240,805
- Issue date Jan 19, 2016
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Signal processing apparatus capable of suppressing non-linear noise...
- Patent number 9,117,485
- Issue date Aug 25, 2015
- Kabushiki Kaisha Toshiba
- Akihito Ogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium, information reproducing apparatus, ma...
- Patent number 9,087,523
- Issue date Jul 21, 2015
- Kabushiki Kaisha Toshiba
- Akihito Ogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Writable information recording and reproducing apparatus
- Patent number 9,064,506
- Issue date Jun 23, 2015
- Kabushiki Kaisha Toshiba
- Hideaki Okano
- G11 - INFORMATION STORAGE
Information Patent Grant
Pickup head, information recording method and reproducing method
- Patent number 8,614,936
- Issue date Dec 24, 2013
- Kabushiki Kaisha Toshiba
- Kazuo Watabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical disk apparatus
- Patent number 8,582,413
- Issue date Nov 12, 2013
- Kabushiki Kaisha Toshiba
- Chikara Tanioka
- G11 - INFORMATION STORAGE
Information Patent Grant
Focus servo control device, and information recording/reproducing d...
- Patent number 8,553,508
- Issue date Oct 8, 2013
- Kabushiki Kaisha Toshiba
- Takashi Usui
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
INTERLEAVE CIRCUIT AND COMMUNICATION DEVICE
- Publication number 20240061773
- Publication date Feb 22, 2024
- Kabushiki Kaisha Toshiba
- Yutaro ISHIGAKI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
QUANTUM CRYPTOGRAPHIC COMMUNICATION SYSTEM, KEY MANAGEMENT DEVICE,...
- Publication number 20230299953
- Publication date Sep 21, 2023
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM CRYPTOGRAPHIC COMMUNICATION SYSTEM, KEY MANAGEMENT INSPECTI...
- Publication number 20220393864
- Publication date Dec 8, 2022
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPLICATION-KEY MANAGEMENT SYSTEM, APPLICATION-KEY MANAGEMENT DEVIC...
- Publication number 20210409202
- Publication date Dec 30, 2021
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM CRYPTOGRAPHIC DEVICE, QUANTUM CRYPTOGRAPHIC COMMUNICATION F...
- Publication number 20210328784
- Publication date Oct 21, 2021
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
KEY GENERATION DEVICE, KEY GENERATION METHOD, AND COMPUTER PROGRAM...
- Publication number 20200092089
- Publication date Mar 19, 2020
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Quantum communication device, quantum communication system, and qua...
- Publication number 20180359086
- Publication date Dec 13, 2018
- KABUSHIKI KAISHA TOSHIBA
- Alex Dixon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM COMMUNICATION DEVICE, QUANTUM COMMUNICATION SYSTEM, AND QUA...
- Publication number 20180262328
- Publication date Sep 13, 2018
- KABUSHIKI KAISHA TOSHIBA
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DECODING APPARATUS, DECODING METHOD, AND COMPUTER PROGRAM PRODUCT
- Publication number 20160329909
- Publication date Nov 10, 2016
- KABUSHIKI KAISHA TOSHIBA
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...
- Publication number 20160142203
- Publication date May 19, 2016
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PARITY CHECK MATRIX CREATION METHOD, ENCODING APPARATUS, AND RECORD...
- Publication number 20150381210
- Publication date Dec 31, 2015
- KABUSHIKI KAISHA TOSHIBA
- Kazuaki DOI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
QUANTUM COMMUNICATION DEVICE, QUANTUM COMMUNICATION METHOD, AND COM...
- Publication number 20150193306
- Publication date Jul 9, 2015
- KABUSHIKI KAISHA TOSHIBA
- Kazuaki DOI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
QUANTUM COMMUNICATION DEVICE, QUANTUM COMMUNICATION METHOD, AND COM...
- Publication number 20150195087
- Publication date Jul 9, 2015
- KABUSHIKI KAISHA TOSHIBA
- Kazuaki DOI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SIGNAL PROCESSING APPARATUS AND INFORMATION REPRODUCTION APPARATUS
- Publication number 20150003225
- Publication date Jan 1, 2015
- KABUSHIKI KAISHA TOSHIBA
- Akihito OGAWA
- G11 - INFORMATION STORAGE
Information Patent Application
PARITY CHECK MATRIX CREATION METHOD, ENCODING APPARATUS, AND RECORD...
- Publication number 20150006989
- Publication date Jan 1, 2015
- KABUSHIKI KAISHA TOSHIBA
- Kazuaki DOI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCING APPARATUS, MA...
- Publication number 20140185420
- Publication date Jul 3, 2014
- KABUSHIKI KAISHA TOSHIBA
- Akihito OGAWA
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP AND OPTICAL DISK APPARATUS
- Publication number 20130094341
- Publication date Apr 18, 2013
- Chikara Tanioka
- G11 - INFORMATION STORAGE
Information Patent Application
INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCTION APPARATUS AN...
- Publication number 20130094343
- Publication date Apr 18, 2013
- Akihito Ogawa
- G11 - INFORMATION STORAGE
Information Patent Application
INFORMATION RECORDING AND REPRODUCING APPARATUS
- Publication number 20130021892
- Publication date Jan 24, 2013
- Hideaki Okano
- G11 - INFORMATION STORAGE
Information Patent Application
FOCUS SERVO CONTROL DEVICE, AND INFORMATION RECORDING/REPRODUCING D...
- Publication number 20120236696
- Publication date Sep 20, 2012
- Takashi Usui
- G11 - INFORMATION STORAGE
Information Patent Application
PICKUP HEAD, INFORMATION RECORDING METHOD AND REPRODUCING METHOD
- Publication number 20120224462
- Publication date Sep 6, 2012
- Kazuo Watabe
- G11 - INFORMATION STORAGE
Information Patent Application
SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD THAT DECODE E...
- Publication number 20090319873
- Publication date Dec 24, 2009
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H03 - BASIC ELECTRONIC CIRCUITRY

Kazuaki Doi

Person

Patents Grantslast 30 patents

Quantum cryptographic communication system, key management inspecti...

Application-key management system, application-key management devic...

Quantum communication device, quantum communication system, and qua...

Key generation device, key generation method, and computer program...

Quantum key distribution device, quantum key distribution system, a...

Decoding apparatus, decoding method, and computer program product

Quantum communication device, quantum communication method, and com...

Quantum communication device, quantum communication method, and com...

Parity check matrix creation method, encoding apparatus, and record...

Signal processing apparatus capable of suppressing non-linear noise...

Information recording medium, information reproducing apparatus, ma...

Writable information recording and reproducing apparatus

Pickup head, information recording method and reproducing method

Optical pickup and optical disk apparatus

Focus servo control device, and information recording/reproducing d...

Patents Applicationslast 30 patents

INTERLEAVE CIRCUIT AND COMMUNICATION DEVICE

QUANTUM CRYPTOGRAPHIC COMMUNICATION SYSTEM, KEY MANAGEMENT DEVICE,...

QUANTUM CRYPTOGRAPHIC COMMUNICATION SYSTEM, KEY MANAGEMENT INSPECTI...

APPLICATION-KEY MANAGEMENT SYSTEM, APPLICATION-KEY MANAGEMENT DEVIC...

QUANTUM CRYPTOGRAPHIC DEVICE, QUANTUM CRYPTOGRAPHIC COMMUNICATION F...

KEY GENERATION DEVICE, KEY GENERATION METHOD, AND COMPUTER PROGRAM...

Quantum communication device, quantum communication system, and qua...

QUANTUM COMMUNICATION DEVICE, QUANTUM COMMUNICATION SYSTEM, AND QUA...

DECODING APPARATUS, DECODING METHOD, AND COMPUTER PROGRAM PRODUCT

QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...

PARITY CHECK MATRIX CREATION METHOD, ENCODING APPARATUS, AND RECORD...

QUANTUM COMMUNICATION DEVICE, QUANTUM COMMUNICATION METHOD, AND COM...

QUANTUM COMMUNICATION DEVICE, QUANTUM COMMUNICATION METHOD, AND COM...

SIGNAL PROCESSING APPARATUS AND INFORMATION REPRODUCTION APPARATUS

PARITY CHECK MATRIX CREATION METHOD, ENCODING APPARATUS, AND RECORD...

INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCING APPARATUS, MA...

OPTICAL PICKUP AND OPTICAL DISK APPARATUS

INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCTION APPARATUS AN...

INFORMATION RECORDING AND REPRODUCING APPARATUS

FOCUS SERVO CONTROL DEVICE, AND INFORMATION RECORDING/REPRODUCING D...

PICKUP HEAD, INFORMATION RECORDING METHOD AND REPRODUCING METHOD

SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD THAT DECODE E...