Abstract:
A reallocation sector recovering system and method reducing a number of reallocation sectors by selectively recovering reallocation sectors, and a disc drive implementing the same. The reallocation sector recovering method in a data storage system may include determining whether a predetermined processing condition of a reallocation recovering process has been satisfied, reading data from reallocation sectors using reallocation list information and rewriting the data in original sectors corresponding to the reallocation sectors, respectively. The process may further include determining whether the data rewritten on the original sectors has successfully been read without generation of a reallocation condition, such that, if the data is successfully read without generation of the reallocation condition, the reallocation sectors may be substituted by the original sectors, respectively, and information of the reallocation sectors may be deleted from the reallocation list information.
Abstract:
A reallocation sector recovering system and method reducing a number of reallocation sectors by selectively recovering reallocation sectors, and a disc drive implementing the same. The reallocation sector recovering method in a data storage system may include determining whether a predetermined processing condition of a reallocation recovering process has been satisfied, reading data from reallocation sectors using reallocation list information and rewriting the data in original sectors corresponding to the reallocation sectors, respectively. The process may further include determining whether the data rewritten on the original sectors has successfully been read without generation of a reallocation condition, such that, if the data is successfully read without generation of the reallocation condition, the reallocation sectors may be substituted by the original sectors, respectively, and information of the reallocation sectors may be deleted from the reallocation list information.
Abstract:
A lower unit for a glass polishing system includes a support installed to a rotatable turntable, and a carrier having a supporting part for supporting a glass to be polished, and a placing part formed in a surface opposite to the supporting part and fixed and placed to the support.
Abstract:
Disclosed are an apparatus and a method for monitoring a glass plate polishing state. The apparatus may include a location measuring unit for measuring a location on a glass plate being polished by a polishing machine, a current measuring unit for measuring an electric current flowing into the polishing machine, a memory unit for storing a reference value of the electric current flowing into the polishing machine for each polishing location of the glass plate, and a control unit for determining whether a polishing state is faulty, by comparing a value of the electric current measured by the current measuring unit for each polishing location measured by the location measuring unit with a corresponding reference value of the electric current stored in the memory unit for each polishing location.
Abstract:
A method of deciding a data format of a hard disk drive that includes assigning to a sector existing in a data zone of a disk a logical block address larger than a logical block address of a sector existing in an other data zone existing at an inner circumference with respect to the other data zone, according to a first data format in which data is recorded in an order from a data zone located at an inner circumference of the disk to a data zone located at an outer circumference of the disk with respect to a data zone located substantially in a middle of the innermost circumference and the outermost circumference of the disk.
Abstract:
A lower unit for a glass polishing system includes a support installed to a rotatable turntable, and a carrier having a supporting part for supporting a glass to be polished, and a placing part formed in a surface opposite to the supporting part and fixed and placed to the support.
Abstract:
A system, related hard disk drive (HDD) and method are disclosed in which a firmware download to the HDD is accomplished by receiving it from the host and storing it to a first region of a disk in the HDD. The value of a download flag is set once the firmware download is complete. After the system performs an OFF/ON power cycle, it checks the value of the download flag and changes a Logical Block Address mapping a second region of a non-user data region of the disk storing a DOS boot program. The firmware download is transferred from the first region to a third region of the disk or a non-volatile memory device following execution of a boot procedure by the host using the DOS boot program.
Abstract:
Disclosed are an apparatus and a method for monitoring a glass plate polishing state. The apparatus may include a location measuring unit for measuring a location on a glass plate being polished by a polishing machine, a current measuring unit for measuring an electric current flowing into the polishing machine, a memory unit for storing a reference value of the electric current flowing into the polishing machine for each polishing location of the glass plate, and a control unit for determining whether a polishing state is faulty, by comparing a value of the electric current measured by the current measuring unit for each polishing location measured by the location measuring unit with a corresponding reference value of the electric current stored in the memory unit for each polishing location.