公开(公告)号：US6373794B2

公开(公告)日：2002-04-16

申请号：US76583701

申请日：2001-01-19

Applicant: ST MICROELECTRONICS NV

Inventor： PACKER JOHN S

IPC: G11B7/0037 ,  G11B20/10 ,  G11B20/12 ,  G11B27/10 ,  G11B27/30 ,  G11B17/22

CPC classification number: G11B27/3063 ,  G11B7/0037 ,  G11B20/10527 ,  G11B20/1252 ,  G11B27/105 ,  G11B2020/1062 ,  G11B2020/1225 ,  G11B2020/1271 ,  G11B2020/1292 ,  G11B2220/2545

Abstract: Disclosed is a disc drive system that includes a digital signal processor for processing information sectors read from a CD media. The digital signal processor is configured to parse the information sectors into data frames and subcode frames. A data auto-start unit for triggering a data transfer to a buffer memory when a desired data frame is detected. A subcode auto-start unit for triggering a subcode transfer to the buffer memory when a desired subcode frame is detected. Preferably, the desired data frame and the desired subcode frame have a same MSF. The disc drive system further includes a buffer manager having a plurality of counters that are configured to track the number of data frames and the number of subcode frames being transferred to the buffer memory, and releasing a block including one of the data frames and one of the subcode frames when the counters indicate that the block is complete.

Abstract translation: 公开了一种盘驱动系统，其包括用于处理从CD介质读取的信息扇区的数字信号处理器。 数字信号处理器被配置为将信息扇区解析为数据帧和子码帧。 一种数据自动启动单元，用于当检测到期望的数据帧时触发向缓冲存储器的数据传送。 子代码自动启动单元，用于当检测到期望的子代码帧时触发向缓冲存储器的子代码传送。 优选地，期望的数据帧和期望的子码帧具有相同的MSF。 磁盘驱动器系统还包括具有多个计数器的缓冲器管理器，其被配置为跟踪数据帧的数量和被传送到缓冲存储器的子代码帧的数量，以及释放包括数据帧之一和 当计数器指示块完成时，子代码帧。