"compact disc" drive apparatus specifically designed for...

G - Physics – 11 – B

Patent

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352/32.1

G11B 7/00 (2006.01) G06F 3/06 (2006.01) G11B 7/013 (2006.01) G11B 19/04 (2006.01) G11B 20/18 (2006.01) G11B 27/00 (2006.01) G11B 27/10 (2006.01) G11B 27/30 (2006.01) G11B 27/36 (2006.01) G11B 33/10 (2006.01)

Patent

CA 1292065

PHQ 86.005 ABSTRACT: Compact disc drive apparatus specifically designed for storage of digital data and/or a mixture of audio information and digital data. A compact disc drive apparatus (20) has been modified for use in a data processing environment. Decoding of first and second error protection levels is effected locally. A five-bit wide interface to a host controller (22) is defined: - a one bit wide data path (52) - a one bit wide clock path for validating each data bit with a clock pulse (50) - an error-attention line for signalling data errors, drive errors, spin-up/non spin-up situations and illegal commands (48) - a command line for receiving controller commands (46) - and a response line for transferring parameter and status bytes to the controller.

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