Abstract: A SSD controlling circuit includes: a read and write circuit for coupling with a SSD; and a flash memory controlling circuit coupled with the read and write circuit and configured to operably conduct following operations: reading data from a target data block of the SSD and conduct error checking and correction operation on retrieved data; if uncorrectable error occurs, moving data of the target data block to other blocks; erasing the target data block; writing test data into the target data block; after a predetermined time, reading test data from the target data block and conduct error checking and correction operation on retrieved data; recording error counts of the target data block; and determining the reusability of the target data block according to the recorded error counts.

Abstract: A non-multimedia device having functions of simulating a multimedia device and a simulating method thereof are disclosed in the present invention. The non-multimedia device includes a control chip, a host interface and a memory interface. The control chip controls the operation of the non-multimedia device. The host interface is connected with a host as a communication interface between the host and the non-multimedia device. The memory interface is connected with a memory card as a communication interface between the memory card and the non-multimedia device.