Device for reproducing recorded data in disc

Abstract

The invention is a kind of data reappearing device for recorded CD. It includes light shoot lens, radio frequency signal processor and digital signal processor, decoder, digital and analog commutator and external clock pulse signal generator, it also includes: the first clock pulse generator which generates clock pulse according to the kind of the inputted data; the second clock pulse generator which has nothing to do with the types of inputted data; the clock pulse signal generator for decoding of inputted data, the attenuator for attenuating the signal of the second clock pulse signal generator; according to the kinds of the inputted data, the mixed clock pulse signal which is mixed by the output of the first clock pulse signal generator and the output of the attenuator, and includes the decoder for the inputted data.

Description

(1) Technical field [0001] The present invention relates to an invention of a data reproducing device for a recorded optical disc. More specifically, the reproduced data read from an optical disc having a variety of tangible data recorded at different pulse modulation rates (sampling rates) from each other is selected using a suitable A data reproduction device for recorded optical discs that performs normal decoding operations on time pulses of its frequency. (2) Background technology [0002] first, figure 1 It represents the structure of the existing recorded optical disc data reproducing device. The above-mentioned recorded optical disc data reproducing device includes an optical pick-up head 11 that reads the signal recorded on the optical disc 10 with a high-frequency signal like a CD; The processor 12 for converting the high-frequency signal into a radio frequency signal of binary data, and the digital signal processor 13 for processing the converted binary data into...

AI Technical Summary

Problems solved by technology

[0007] However, there may be an optical disc in which the recently popular MP3 audio data is mixed with the above-mentioned general CD format audio data and high-density CD format audio data. Therefore, in order to decode the above-mentioned MP3 audio data, in addition to the above-mentioned 44.1KHz external clock In addition to the pulse, another clock pulse of another frequency must be needed. This reality needs to be solved urgently.

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