A data separator for providing data and clock information derived from a floppy disk to a controller includes a synthetic oscillator phase-locked loop which adjusts the phase of the derived clock, thereby to tend to position data inputs within the central portion of their associated half-bit slots. The center frequency of the synthetic oscillator may be modified in accordance with prior phase adjustments to compensate for variations in the speed of the floppy disk drive.
申请公布号
US4472818(A)
申请公布日期
1984.09.18
申请号
US19840577310
申请日期
1984.02.06
申请人
STANDARD MICROSYSTEMS CORPORATION
发明人
ZAPISEK, JOHN M.;TWEEDY, JR., JOHN F.;GIULEKAS, GUS