Watermarking method for motion picture image sequence

Patent 6980226 Issued on December 27, 2005. Estimated Expiration Date:

February 13, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Application

No. 10778528 filed on 02/13/2004

US Classes:

347/225, Scan of light347/129, Photo scanning355/40, Identifying, composing, or selecting347/224, LIGHT OR BEAM MARKING APPARATUS OR PROCESSES359/634, Wavelength selective (e.g., dichroic mirror, etc.)347/232, Multicolor399/311Corona

Examiners

Primary: Tran, Huan

Attorney, Agent or Firm

Watkins; Peyton C.

Foreign Patent References

519391 EP 12/01/1992

International Classes

B41J002/435
B23K026/04

Abstract

A method is provided for applying a watermark pattern along a length of photosensitive medium, the photosensitive medium having a frame pitch in the length direction that is the sum of an image frame height plus an interframe distance. The method exposes watermark tiles contiguously along the length of the photosensitive medium, wherein each watermark tile has a height dimension that is an integral divisor of the frame pitch.

Other References

J. Lubin et al., “Robust, content-dependent, high-fidelity watermark for tracking in digital cinema,” in Security and Watermarking of Multimedia Centents V, Proc. SPIE, vol. 5020, Jan. 24, 2003.