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Automatic loading disc player
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Patent number 4,879,705
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Issue date Nov 7, 1989
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Pioneer Electronic Corporation
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Yoshio Aoyagi
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G11 - INFORMATION STORAGE
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Automatic loading disc player
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Patent number 4,829,502
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Issue date May 9, 1989
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Pioneer Electronic Corporation
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Yoshiro Aoyagi
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G11 - INFORMATION STORAGE
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Pulse-width modulation drive circuit
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Patent number 4,823,056
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Issue date Apr 18, 1989
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Pioneer Electronic Corporation
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Yoshihiko Watanabe
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Automatic loading disc player
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Patent number 4,701,902
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Issue date Oct 20, 1987
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Pioneer Electronic Corporation
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Yoshiro Aoyagi
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G11 - INFORMATION STORAGE
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Level shifting circuit
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Patent number 4,551,642
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Issue date Nov 5, 1985
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Pioneer Electronic Corporation
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Koki Aizawa
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H03 - BASIC ELECTRONIC CIRCUITRY
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Amplifier circuit
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Patent number 4,510,458
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Issue date Apr 9, 1985
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Hitachi, Ltd.
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Tetsuo Sato
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H03 - BASIC ELECTRONIC CIRCUITRY
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Noise reduction system
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Patent number 4,476,502
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Issue date Oct 9, 1984
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Hitachi, Ltd.
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Kazuo Watanabe
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H03 - BASIC ELECTRONIC CIRCUITRY