Disk drive circuit with partial match detection for predetermined bit sequence
Radio selective calling receiver having battery saving function
System and method for providing nonadjacent redundancy synchronization bytes Patent #: 6124994
ApplicationNo. 09748149 filed on 12/27/2000
US Classes:360/51, Data clocking360/53Data verification
ExaminersPrimary: Sniezek, Andrew L.
Assistant: Colon, Rocio
Attorney, Agent or Firm
Foreign Patent References
International ClassG11B 509
AbstractAn apparatus and method for detecting synchronous (SYNC) signals written on a disk memory device is performed by dividing a reproduced SYNC pattern, which includes a predetermined number of symbols, into a plurality of groups. Each of the plurality of groups includes at least one symbol that overlaps a symbol contained in another group. The invention outputs a SYNC detected signal when the symbols of at least one of the divided groups match the symbol of the SYNC pattern. In order to detect the SYNC signal, the invention increases the number of symbols included in each of the divided groups even when a large defect exists in the disk memory device.