Pcm signal recording/reproducing apparatus

Details Pcm signal recording/reproducing apparatus Pcm signal recording/reproducing apparatus

G - Physics

11

B

352/21.1

G11B 5/09 (2006.01) G11B 5/008 (2006.01) G11B 5/035 (2006.01) G11B 15/467 (2006.01) G11B 20/10 (2006.01) G11B 20/18 (2006.01)

Patent

CA 1243774

ABSTRACT OF THE DISCLOSURE A digital signal recording/reproducing apparatus capable of recording and reproducing digital signals having differences in respect to sampling frequency thereof and the number of quantization bits per sample by means of a common circuit arrangement includes means for varying revolution speed of rotating heads for record- ing and reproduction or traveling speed of a recording medium as a function of different sampling frequencies. A signal processing circuit for processing the digital signals so as to be suited for the recording on the recording medium is controlled by a clock signal of which frequency is changed in dependence on the different sampling frequencies. The signal processing circuit is arranged so that PCM data contained in a frame is constituted by a number of bits which is equal to a common multiple of the different quantization bit numbers and added with a common frame synchronizing signal and common error detection and correction codes to thereby prepare the PCM signal of the frame arrangement. The digital signals which differ in the sampling frequency and the quantization bit numbers can be recorded by same recording and reproducing apparatus with an improved efficiency with a same wavelength and in a same signal format.

456574

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