Abstract: A clock data recovery (CDR) circuit that can be used for recovering data from a high-speed serial transmission using components that operate at a fraction of the data speed. The CDR consists of a phase detector, an averaging circuit and a phase interpolator. The phase detector samples each data bit at its midpoint and at its transitional region and then compares the two samples to determine whether the sampling clock, which is generated by a phase interpolator, is leading or lagging the data stream. The averaging circuit filters out the high frequency jitters in the phase detector output and then passes the filtered signals on to the phase interpolator for phase selection. The phase interpolator uses the filtered signals from the averaging circuit as a guide in the selection of an output clock phase that minimizes the phase difference between the output clock and the incoming data.

Abstract: Disclosed is an automated disk-ejection apparatus for use in a disk system. The disk system includes a disk box for housing a disk drive, and the auto-ejection apparatus comprises: a handle for pulling out or pushing back the disk box; a pushing mechanism for pushing the handle; and a control circuit for controlling the pushing mechanism. The featured disk apparatus is designed such that while the disk box needs to be pulled out in order for loading or replacing the disk drive, the pushing mechanism is activated to push the handle. The handle can thus be rotated along the pivot into an inoperative state, for subsequently to be pulled for withdrawing the disk box. Moreover, another embodiment of the present invention relates to using a pushing mechanism to push a rotatable panel of a disk box.

Abstract: Disclosed is an automated disk-ejection apparatus for use in a disk system. The disk system includes a disk box for housing a disk drive, and the auto-ejection apparatus comprises: a handle for pulling out or pushing back the disk box; a pushing mechanism for pushing the handle; and a control circuit for controlling the pushing mechanism. The featured disk apparatus is designed such that while the disk box needs to be pulled out in order for loading or replacing the disk drive, the pushing mechanism is activated to push the handle. The handle can thus be rotated along the pivot into an inoperative state, for subsequently to be pulled for withdrawing the disk box. Moreover, another embodiment of the present invention relates to using a pushing mechanism to push a rotatable panel of a disk box.