Mediatek Corporation

Mediatek Incorporation

Chun-Ying Chiang

Chin-Huo Chu

Li-Chun Tu

Shu-Fang Tsai

Po-Ching Lu

Ming-Hung Lee

Hong-ching Chen

Tzu-Chieh Lin

Kun-chieh Yang

Memory systems and mapping methods thereof are provided. In one embodiment of a memory system, an interface device is coupled between a flash memory and a host and stores a flash translation layer. The flash translation layer utilizes a data block mapping table and a page mapping table to manage data blocks and log blocks of the flash memory by a page mapping scheme and utilizes a random write page mapping table independent from the block mapping table and the page mapping table to manage the random write blocks by a random write mapping scheme. When a first predetermined condition is satisfied, the flash translation layer converts one of the data blocks (and one of the log block corresponding to the converted data block if any) into random write block(s) and utilizes the random write mapping schemes to manage the random write block(s). When a second predetermined condition is satisfied, the flash translation layer merges and converts random write block(s) into a data block and utilizes the page mapping scheme to manage the converted random write block(s).

Memory system and mapping methods using a random write page mapping table

Methods for updating and recovering user data of a non-volatile memory array such as a flash memory are disclosed. An indication for indicating a mapping relationship for a logical address is established when original user data of the logical addresses is updated into new user data. The indication records new pointers, which record the mapping relationships between logical addresses and physical addresses storing the new user data of the logical addresses. Alternatively, the indication records memory positions of the non-volatile memory array which are defined as designated memory positions and a sequence for using these designated memory positions.

Data updating and recovering methods for a non-volatile memory array

A method for performing blank detection on an optical storage disc includes receiving information read by an optical storage device from the optical storage disc, and checking corresponding data of the information to operate blank detection.

Method and apparatus for performing blank detection on an optical storage disc

A defect management method applied in an optical disc drive for managing defect information of an optical disc is disclosed. The optical disc drive saves a plurality of defect tables comprising at least a first defect table and a second defect table. The first defect table records a plurality of first defect entries and the second defect table records a plurality of second defect entries. The method includes appending an adaptive defect entry comprising a new defect information corresponding to a new defect into a new defect table, a data structure of the adaptive defect entry conforming to a data structure of at least one of the defect entries recorded in the defect tables; and merging the adaptive defect entries into one of the defect tables saved in the optical disc drive when a condition is met.

Defect management method and system of optical disk drive

A method for recording a plurality of data sets onto an optical storage medium by utilizing a temporary storage device in an optical storage system includes storing a plurality of data sets corresponding to a plurality of defective data blocks in the memory into the temporary storage device; re-arranging a sequence of the plurality of data sets corresponding to the plurality of defective data blocks in the temporary storage device according to a sorting process; and recording the plurality of re-arranged data sets in the temporary storage device into a spare storing section; and recording the plurality of re-arranged data sets in the spare storing section into corresponding spare data blocks in an optical storage medium.

Method for defect management of an optical storage medium with a sorting process

A method for performing blank detection on an optical storage disc includes buffering first information read by an optical storage device from the optical storage disc to generate buffered data, and checking corresponding data of an Error Correction Code (ECC) block in the buffered data to determine if the ECC block is a blank ECC block.

A method for recording a plurality of data sets onto an optical storage medium by utilizing a temporary storage device in an optical storage system. The optical storage medium contains a plurality of data blocks and a plurality of spare data blocks. Each data block is utilized for recording a data set, and each spare data block is utilized for substituting for a defective data block to record the corresponding data set. The method comprises: storing a plurality of data sets corresponding to a plurality of defective data blocks in the memory into the temporary storage device; re-arranging a sequence of the plurality of data sets corresponding to the plurality of defective data blocks in the temporary storage device according to a sorting process; and recording the re-arranged data sets in the temporary storage device into the spare data blocks of the optical storage medium.

Growing community of inventors

Chia-I, Taiwan

Chun-Ying Chiang