Zoran Corporation

Oak Technology, Inc.

Oak Technologies, Inc.

Phil Verinsky

Michael Case

Mike Case

Gene E Weddle

A compact disk drive controller to control the access of information from an optical compact disk (CD) digital data storage device by a host computer using an integrated drive electronics (IDE) data bus or an industry standard architecture (ISA) data bus is disclosed. A digital signal processor (DSP) interface to the drive electronics of the CD drive, a dynamic random access memory (DRAM) controller, an error correction code (ECC) data corrector, an error detection and correction (EDC) device employing cyclical redundancy checking techniques (EDC/CRC), and a host computer interface are described.

Host interface for direct connection of an optical drive to an IDE/ATA data bus

Host interface for direct connection of an optical driver to an IDE/ATA data bus

Optical drive controller with a host interface for direct connection to an IDE/ATA data bus

IDE/ATA CD drive controller having a digital signal processor interface,

A method to and apparatus for communicating formatted data from mass storage media to a host computer is disclosed. In a preferred embodiment data is received through a serial digital signal processor (DSP) from an optical compact disk. The method and apparatus separates data bytes from auxiliary bytes, and stores them into separate and specific spaces within a DRAM. Error correction is performed after each block of data has been stored. After a given block has been verified, the system controller records the block number. The method and apparatus reduces the amount of address storage required to locate valid blocks of data in the DRAM. The method of the present invention increases the effective rate of transfer of data from the DRAM to a host computer.

Method and apparatus for communicating formatted data from a mass

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San Jose, CA, United States of America

Phil Verinsky