Mediatek Corporation

Tai-Liang Lin

Shih-Hsin Chen

Shih-Ta Hung

Ping-Sheng Chen

Tse-Hong Wu

KuanYu Lai

The invention provides a method for reading information of an optical data storage medium. First, one sector of the optical data storage medium is obtained. The sector is then decoded to check if the sector is reliable. When the sector is not reliable, a data rescue process referring to spec-defined or pre-defined information of the physical specification of the sector is performed in order to obtain disc fundamental information of the optical data storage medium.

Driving circuit for driving reading operation of optical drive and method for reading information from optical data storage medium

An optical disc drive is provided, mainly comprising a buffer, a processor and a driving module for accessing an optical disc. The optical disc drive receives a plurality of write commands. Each write command comprises a data block and a destination address. The buffer buffers data blocks to be recorded to the optical disc with corresponding write commands in either a random mode or a sequential mode. The processor schedules a recording operation based on the write commands, and selectively switches the buffer to the random mode or to the sequential mode based on arrangements of data blocks buffered in the buffer. The driving module is controlled by the processor to perform the recording operation, whereby the data blocks are recorded to the optical disc when a start recording condition is met. Specifically, the start recording condition varies with the random or sequential modes.

Buffer management method and optical disc drive

A buffer management method is provided. A host issues a read command requesting access for a read data block and a write command requesting recording of a write data block. A write buffer is dedicated to store the write data block. A read buffer is dedicated to store the read data block. The method comprises entering the optical disc recorder into a write loop. During the write loop, the optical disc recorder triggering a write command handling procedure in response to the write command; triggering a read command handling procedure in response to the read command; and triggering a pre-recording procedure to prepare the write data block in the write buffer for recording. Wherein contents between the write buffer and read buffer are exchangeable during the write handling procedure, the read handling procedure or the pre-recording procedure.

Optical disc recorder and buffer management method thereof

A method for generating a recovered table of contents (TOC) for an optical disc having an damaged TOC and a predetermined file system includes selecting a recovering session on the optical disc; determining a recovering session starting location corresponding to a first SRR starting location in the recovering session; determining if the recovering session is a closed session; and if the recovering session is a closed session: determining a data size of the recovering session; calculating a next session starting location immediately following the recovering session by adding the data size of the recovering session, a temp-leadout size of the recovering session, and a temp-leadin size of the next session to the recovering session starting location; and constructing the recovered TOC by including information of recovering session and the next session starting location.

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Keelung, Taiwan

Tai-Liang Lin