Sync pattern encoding system for data sectors written on a storage medium
CA 1234914 A · Owner: Storage Technology Partners Ii (Through Stc Optical Disk Development Corporation, Managing General Partner) · Inventors: Graba, James M.; Noyes, George L.; O'Keeffe, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for generating a unique sync pattern that may be appended to a selected data sector of a disk storage system (20). The data to be stored in the disk storage system is encoded in accordance with a desired fixed rate run-length limited code such as a 2-7 code. The unique sync pattern is generated by first encoding a prescribed data word (BF7A) in accordance with the desired code. At least one bit of the encoded prescribed data word is then changed in a manner such that the changed encoded word still complies with the coding rules of the desired code yet the, resulting bit pattern does not represent any valid sequence of data in accordance with the desired code. Hence the …
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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.