Encrypting a Coded Representation of an Image to Prevent Unauthorised Access

Details for Australian Patent Application No. 2002301752 (hide)

Owner Canon Kabushiki Kaisha

Inventors Dorrell, Andrew James; Chan, Woei

Agent Spruson & Ferguson

Pub. Number AU-B-2002301752

Priority PR9159 28.11.01 AU

Filing date 31 October 2002

Wipo publication date 12 June 2003

Acceptance publication date 12 February 2004

International Classifications

H03M 007/00 Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits

H04N 001/64 Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission - Systems for the transmission or the storage of the colour picture signal

G06T 009/00 Image coding, e.g. from bit-mapped to non bit-mapped

Event Publications

12 June 2003 Application Open to Public Inspection

  Published as AU-B-2002301752

12 February 2004 Application Accepted

  Published as AU-B-2002301752

10 June 2004 Standard Patent Sealed

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