Patent ID: 7164634
Filing Date: 2007-01-16
Classification: G11B

Abstract:
1. A storage unit with shockproof function inside a mobile device, comprising: a storage media; a sensing device for detecting a motion signal of the mobile device; and a control unit coupled to the storage media and the sensing device for granting access to the storage media, wherein the storage unit further includes a buffer memory in the form of a ring buffer for holding a portion of the data so that data can be read from the buffer memory when the control unit disallows the reading of data from the storage unit and data can be written to the buffer when the control unit disallows the writing of data to the storage unit, and the pick-up head of the storage unit is parked and the rotation of a spinning motor is stopped when the motion signal is higher than a preset value and that the data stored inside the ring buffer is at a safety level, and wherein data is read from the storage media only when the safety level of the ring buffer is greater than 75% of buffer capacity and data is written to the storage media only when the safety level of the ring buffer is smaller than 25% of the buffer capacity.