Optical disk replaying machine and method
A technology of a player, an optical disc, applied in the direction of recording/reproducing by optical methods, recording of information on a magnetic disc, digital recording/reproducing, etc., can solve the problems of influence, large amount of power, harmful sound quality, etc.
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[0045] The invention is further described below in terms of disc players suitable for both types of discs. The compact disc player is adapted to selectively read compact discs (CDs; hereinafter referred to as "CD discs" for ease of illustration and explanation) and high density recording discs and / or have CDs recorded on their first layer. signal, and an HD signal is recorded on its second layer.
[0046] Here, the CD refers to an optical disc having a first audio signal of 16 quantization bits sampled at a sampling frequency of 44.1 KHz recorded therein.
[0047] On the other hand, here, a high density (HD) recording optical disc refers to an optical disc having a second digital audio signal of 1 quantization bit (hereinafter referred to as "HD signal") sampled at a sampling frequency of 64*44.1 KHz.
[0048] Referring now to FIG. 1, there is schematically illustrated in block diagram form an embodiment of an optical disc player according to the present invention suitable fo...
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