"compact disc" drive apparatus specifically designed for storage of digital data and/or a mixture of audio information and digital data
CA 1292065 C · Owner: Van Alphen, Adrianus J.M. · Inventors: Monen, Marinus J.B.M.; Markvoort, Jan A.; Van Alphen, Adrianus J.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.