Data storage device and method for restricting access thereof

摘要

A data storage device including a flash memory, a temperature sensor and a controller. The flash memory has a plurality of blocks, and each of the blocks has a plurality of pages. The temperature sensor detects surrounding ambient temperature and to produce a temperature parameter accordingly. The controller is arranged to perform a first maintenance procedure after a predetermined period since the data storage device is powered on. The controller reads the temperature sensor to obtain a first temperature parameter in the first maintenance procedure and determines a first time span according to a first predetermined condition for performing a second maintenance procedure, wherein the first predetermined condition includes the first temperature parameter, and the controller is further arranged to perform the second maintenance procedure after the first time span since the first maintenance procedure has finished.

主权项

1. A data storage device, comprising:
a flash memory, having a plurality of blocks, and each of the blocks has a plurality of pages; a temperature sensor, arranged to detect surrounding ambient temperature and produce temperature parameters accordingly; and a controller, configured to sequentially perform a plurality of maintenance procedures at different times during the flash memory is powered on, and scan the blocks to maintain data stored in the pages of the flash memory in the maintenance procedures, wherein the controller is configured to perform a first maintenance procedure of the plurality of maintenance procedures after a predetermined period from the time the data storage device is powered on, read the temperature sensor to obtain a first temperature parameter in the first maintenance procedure, determine a first time span according to a first predetermined condition, and perform a second maintenance procedure of the plurality of maintenance procedures after the first time span from the time the first maintenance procedure has finished, wherein the first predetermined condition comprises the first temperature parameter.