Silicon Motion, Inc.

Industrial Technology Research Institute

Po-Chia Chu

Yu-Hsien Chiu

Yuh-Ching Wang

Tsung-Ying Yang

Yu-Chih Lin

Yen-Hung Lin

Tai-Yu Tsou

The present invention provides a data storage device including a flash memory and a controller. The controller receives a read command arranged to read data from a host, determines a plurality of read tasks by analyzing the read command, and determines task time of each of the read tasks according to the number of the read tasks and an I/O latency time. In a first read task of the read tasks, the controller reads a part of the data and transmits the read part to the host, and executes a first maintenance process according to a predetermined condition, wherein the predetermined condition includes a remain time and the remain time is the task time minus the time spent by the first read task.

Data-storage device and data maintenance method thereof

A FLASH memory control technique with wear leveling between the different blocks of the FLASH memory. By a controller managing the blocks of a FLASH memory within a data storage device, some of the blocks are pushed into a spare queue waiting to be allocated as data blocks or system blocks. When the number of blocks within the spare queue is lower than a clean threshold and any block within the spare queue has an erase count greater than an overused lower threshold, the controller performs a garbage correction operation with wear leveling between the different blocks.

Data storage device and flash memory control method

A FLASH memory control technique with wear leveling between the different blocks of the FLASH memory. By a controller managing the blocks of a FLASH memory within a data storage device, some of the blocks are pushed into a spare queue waiting to be allocated as data blocks or system blocks and some blocks are pushed into a jail queue to be inaccessible. When the jail queue is full and any block within the spare queue has an erase count greater than any block within the jail queue, for wear leveling between the different blocks within the FLASH memory, the controller releases a first block selected from the jail queue and pushes a second block selected from the spare queue into the jail queue.

A garbage collection method for a flash memory is provided. The flash memory includes a spare block pool and a data block pool, wherein the spare block pool includes spare blocks and the data block pool includes data blocks. The method includes the steps of: receiving target data from a host and writing the target data to a current data block of the data blocks; sorting an erase count of each data block when performing a wear-leveling process to write the target data; sorting a valid page number of each first block when it is determined that at least two first blocks in the data blocks have the smallest erase count; and selecting a second block having a smallest valid page number from the first blocks and writing valid pages of the second block to one of the spare blocks to perform a data cleaning process.

Garbage collection method for flash memory

The present invention relates to a method and a device for dispatching packets with different network protocols and supporting IP-based networks, Non-IP-based networks, controller networks and multimedia networks. With the method and the device of the present invention, the network user can easily add new network services to the existing network structure. Meanwhile, dispatch of network packets is more efficient.

Heterogeneous network packet dispatch methodology

A multiple network service sharing method and a device for the same are provided. With the sub-network aggregation information collecting function and service arbitration function, the network user can easily add new network services to the existing network structure. The method and device support wired, wireless, IP-based and non-IP-based networks.

Growing community of inventors

Kaohsiung, Taiwan

Po-Chia Chu