Digital data reproduction apparatus

Details Digital data reproduction apparatus Digital data reproduction apparatus

2005-11-08

2005-11-08

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

Binary pulse train information signal

Including sampling or a/d converting

C369S059100, C369S059150

Reexamination Certificate

active

06963528

ABSTRACT:
In a digital data reproduction apparatus for demodulating digital data from an optical recording medium, PRML (Partial Response Maximum Likelihood) signal processing effective to high-density recording/reproduction is carried out by using a half rate processing offset control means which performs data demodulation using half of the channel bit frequency, a half rate processing phase sync control means, a half rate processing adaptive equalization means, and a half rate processing maximum likelihood decoder, and the digital data recorded on the optical recording medium are reproduced while restoring signal components which are missing in the time direction, by linear interpolation or Nyquist interpolation. Therefore, digital data reproduction performance is improved, and power consumption is reduced.

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patent: 2001-101799 (2001-04-01), None
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