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Patent

Compact disc drive apparatus having an interface for transferring data and commands to and from a host controller

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TLDR
In this paper, an interface is provided to a host controller for reading out data on a compact disc, and read out data is converted from parallel to serial format, and transmitted with a clock stream to the host controller.
Abstract
A drive apparatus for an optical disc read system. An interface is provided to a host controller for reading out data on a compact disc. The read out data is converted from parallel to serial format, and transmitted with a clock stream to the host controller. Host controller commands are transmitted to the drive apparatus which recognizes the command as either allowable or non-allowable. The interface provides signalling to the host controller of drive error conditions, spin up/non-spin up conditions, and non-allowable command situations for the controller.

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References
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