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Sadayuki Narusawa
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Hamamatsu, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Sound recording/reproducing method and apparatus
Patent number
7,990,822
Issue date
Aug 2, 2011
Yamaha Corporation
Katsuaki Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Data reproducing system and data streaming system
Patent number
7,769,476
Issue date
Aug 3, 2010
Yamaha Corporation
Sadayuki Narusawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Audio system utilizing personal computer
Patent number
7,224,811
Issue date
May 29, 2007
Yamaha Corporation
Sadayuki Narusawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Reproduction of audio data from recording medium
Patent number
7,092,331
Issue date
Aug 15, 2006
Yamaha Corporation
Kazunobu Fujiwara
G11 - INFORMATION STORAGE
Information
Patent Grant
Frequency control apparatus and method, and storage medium storing...
Patent number
6,396,891
Issue date
May 28, 2002
Yamaha Corporation
Toshitani Masafumi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Frequency control apparatus and method and storage medium storing a...
Patent number
6,118,344
Issue date
Sep 12, 2000
Yamaha Corporation
Masafumi Toshitani
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Apparatus for reproducing video, audio, and accompanying characters...
Patent number
5,863,206
Issue date
Jan 26, 1999
Yamaha Corporation
Sadayuki Narusawa
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Apparatus for intermittently recording and reproducing a signal on...
Patent number
5,412,628
Issue date
May 2, 1995
Yamaha Corporation
Shohei Yamazaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Digital-to-analog converter with noise-free sigma-delta modulation
Patent number
5,200,750
Issue date
Apr 6, 1993
Yamaha Corporation
Tatsuo Fushiki
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Color phase correction circuit
Patent number
5,031,052
Issue date
Jul 9, 1991
Yamaha Corporation
Sadayuki Narusawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronizing circuit for a video disc playback device
Patent number
4,947,264
Issue date
Aug 7, 1990
Yamaha Corporation
Sadayuki Narusawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronizing signal reproducing circuit in a disc playback device
Patent number
4,908,812
Issue date
Mar 13, 1990
Yamaha Corporation
Shinzi Aoshima
G11 - INFORMATION STORAGE
Information
Patent Grant
Mosaic picture generation circuit
Patent number
4,907,072
Issue date
Mar 6, 1990
Yamaha Corporation
Sadayuki Narusawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Rotation speed detection circuit in a video disc playback device fo...
Patent number
4,823,203
Issue date
Apr 18, 1989
Nippon Gakki Seizo Kabushiki Kaisha
Sadayuki Narusawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc motor control circuit for controlling the rotation of a disc i...
Patent number
4,815,063
Issue date
Mar 21, 1989
Yamaha Corporation
Shinzi Aoshima
G11 - INFORMATION STORAGE
Information
Patent Grant
Vertical synchronizing signal detection circuit
Patent number
4,792,852
Issue date
Dec 20, 1988
Nippon Gakki Seizo Kabushiki Kaisha
Sadayuki Narusawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data processing circuit for digital audio system
Patent number
4,707,805
Issue date
Nov 17, 1987
Nippon Gakki Seizo Kabushiki Kaisha
Sadayuki Narusawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Data error detection and correction circuit
Patent number
4,646,303
Issue date
Feb 24, 1987
Nippon Gakki Seizo Kabushiki Kaisha
Sadayuki Narusawa
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Digital information copying management apparatus
Publication number
20060149973
Publication date
Jul 6, 2006
Yamaha Corporation
Hitoshi Koseki
G11 - INFORMATION STORAGE
Information
Patent Application
Audio/video system and portable terminal therefor
Publication number
20050196131
Publication date
Sep 8, 2005
Yamaha Corporation
Sadayuki Narusawa
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Application
Data reproducing system and data streaming system
Publication number
20050138666
Publication date
Jun 23, 2005
Yamaha Corporation
Sadayuki Narusawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Sound recording/reproducing method and apparatus
Publication number
20040037183
Publication date
Feb 26, 2004
Yamaha Corporation
Katsuaki Tanaka
G11 - INFORMATION STORAGE
Information
Patent Application
Reproduction of audio data from recording medium
Publication number
20020118616
Publication date
Aug 29, 2002
Kazunobu Fujiwara
G11 - INFORMATION STORAGE