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Hirohisa Yamaguchi
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Tanashi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image filing apparatus and method for storing image data and direct...
Patent number
5,838,967
Issue date
Nov 17, 1998
TEAC Corporation
Tetsuhisa Okayama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Multiple display presentation system capable of sequencing prerecor...
Patent number
5,335,081
Issue date
Aug 2, 1994
TEAC Corporation
Hirohisa Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Visual presentation system employing two or more video disk players...
Patent number
5,172,242
Issue date
Dec 15, 1992
TEAC Corporation
Hirohisa Yamaguchi
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Data copying method for disk storage medium
Patent number
5,146,369
Issue date
Sep 8, 1992
Teac Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Visual presentation system providing for a wiping change from one s...
Patent number
5,140,425
Issue date
Aug 18, 1992
TEAC Corporation
Hirohisa Yamaguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Drop-out detection circuit
Patent number
5,117,193
Issue date
May 26, 1992
Teac Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Parallel signal processing system
Patent number
5,084,836
Issue date
Jan 28, 1992
Kokusai Denshin Denwa Co., Ltd.
Hirohisa Yamaguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disc inclination detecting apparatus
Patent number
RE33506
Issue date
Dec 25, 1990
TEAC Corporation
Hirohisa Yamaguchi
369 - Dynamic information storage or retrieval
Information
Patent Grant
Distortion eliminating circuit
Patent number
4,958,234
Issue date
Sep 18, 1990
Teac Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical tracking control apparatus for controlling a tracking of a...
Patent number
4,933,925
Issue date
Jun 12, 1990
Teac Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording disc and information signal recording apparat...
Patent number
4,864,423
Issue date
Sep 5, 1989
Teac Corporation
Tadao Nagai
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc attitude variation detecting apparatus
Patent number
4,849,954
Issue date
Jul 18, 1989
TEAC Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for recording an information signal on a rotar...
Patent number
4,841,504
Issue date
Jun 20, 1989
TEAC Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Moving picture signal transmission system
Patent number
4,827,339
Issue date
May 2, 1989
Kokusai Denshin Denwa Co., Ltd.
Masahiro Wada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Disc inclination detecting apparatus
Patent number
4,805,164
Issue date
Feb 14, 1989
TEAC Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotary recording medium having a guide track and recording and repr...
Patent number
4,803,677
Issue date
Feb 7, 1989
TEAC Corporation
Hirohisa Yamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording disc and information signal recording apparat...
Patent number
4,802,159
Issue date
Jan 31, 1989
Teac Corporation
Tadao Nagai
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotation control apparatus for constant linear velocity system info...
Patent number
4,757,488
Issue date
Jul 12, 1988
TEAC Corporation
Tadao Nagai
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording disc pre-recorded with address and pseudo add...
Patent number
4,754,339
Issue date
Jun 28, 1988
TEAC Corporation
Tadao Nagai
G11 - INFORMATION STORAGE
Information
Patent Grant
Movement estimation system for video signals using a recursive grad...
Patent number
4,695,882
Issue date
Sep 22, 1987
Kokusai Denshin Denwa Co., Ltd.
Masahiro Wada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Frame rate conversion system in television signal
Patent number
4,672,442
Issue date
Jun 9, 1987
Kokusai Denshin Denwa Co., Ltd.
Hirohisa Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Embedding quantization system for vector signals
Patent number
4,639,778
Issue date
Jan 27, 1987
Kokusai Denshin Denwa Co., Ltd.
Hirohisa Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Sampling frequency conversion device
Patent number
4,536,745
Issue date
Aug 20, 1985
Kokusai Denshin Denwa Co., Ltd.
Hirohisa Yamaguchi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
PCM Recording and reproducing method providing for dropout compensa...
Patent number
4,224,642
Issue date
Sep 23, 1980
TEAC Corporation
Akinori Mawatari
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Processing apparatus, image recording apparatus and image reproduct...
Publication number
20020003573
Publication date
Jan 10, 2002
TEAC CORPORATION.
Hirohisa Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE