Recording disk data playback apparatus

Details Recording disk data playback apparatus Recording disk data playback apparatus

1985-09-16

1988-02-02

McElheny, Jr., Donald

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381123, 358340, 358343, 369 2, 369 50, H04B 1500, H02B 100

Patent

active

047232951

ABSTRACT:
A recording disk data playback apparatus capable of playback of recording disks having digitized audio data recorded thereon and disks having audio data recorded in analog form, by FM modulation, as well as disks having both digital and analog forms of audio data recorded thereon (together with video data), is provided with a switching circuit for selecting digital audio signals to be supplied to left and right channel output terminals respectively with the switching configuration being designed to minimize crosstalk, and a switching circuit whereby either digital audio signals or analog-derived audio signals can be selected to be supplied to a single pair of (left and right channel) output terminals.

REFERENCES:
patent: 4433347 (1984-02-01), Sugiyama et al.
patent: 4448074 (1984-05-01), Schmidt
patent: 4564867 (1986-01-01), Nakajima
patent: 4583132 (1986-04-01), Nakano et al.
patent: 4618950 (1986-10-01), Abe et al.
patent: 4641204 (1987-02-01), Sugiyama
patent: 4675905 (1987-06-01), Flora et al.

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