Patent ID: 8117518
Filing Date: 2012-02-14
Classification: G11B

Abstract:
1. A data demodulating apparatus, wherein a data sector stores a part of user data or the whole of the user data, and said data sector at least comprises a bit sync region for carrying out bit synchronization, a symbol sync region for carrying out symbol synchronization, a coded user data region for recording a part of said user data or the whole of the user data by coding, and an error correction detection region for error correction and error detection of the recorded data, said data demodulating apparatus comprising: phase synchronizing means for carrying out bit synchronization in said bit synch region; symbol synchronizing means for carrying out symbol synchronization in said symbol sync region; and storage means for storing a part of said bit synch region, or the whole of the region, a part of said symbol sync region, or the whole region, and data of the coded user data region, and data of said error correction detection region, wherein, in accordance with data stored in said storage means, by utilizing said phase synchronizing means and said symbol synchronizing means, demodulation of user data or error correction detection is carried out.