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Controlling-video-or-image-presentation-according-to-encoded-content-classification-information-within-the-video-or-image-data

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Details

Inventors: Chapman, Sydney George; Jones, Julian Hamilton;
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Examiner: Swann; Tod
Assistant Examiner: Jack; Todd
Attorney, Agent or Firm: Scully, Scott, Murphy & Presser, Underweiser, Esq.; Marian

Provided is a method and a system for automatically controlling display of video or image data in dependence on content classification information which is integrated within the data by means of invisible digital watermarking techniques. A controller decodes the watermarked content codes and then prevents displaying of certain material, by overlaying the display with blanking data, if the codes match certain stored codes which the controller has been set to respond to. The use of invisible digital watermark codes by a controller which operates in response to the watermark codes provides reliable control since the codes are more difficult for unauthorized persons to detect and remove than other embedded codes would be.

DETAILED DESCRIPTION What is claimed is: 1.
A controller for controlling displaying on a display means of received video or image data which has been encoded with invisible digital watermarks integrated within the received video or image data and representing a content classification for the video or image data, the controller having connections for connecting to a display means and for connecting to a data receiver or data reading apparatus, the controller comprising: means for detecting digital watermarks integrated within the received video or image data, said received video or image data representing content for display; means for decoding the digital watermarks to obtain content classification information; and means for controlling the displaying of said video or image data in response to the content classification information obtained from the watermarks.
2.
A controller according to claim 1, wherein said means for controlling the displaying of said video or image data includes means for comparing the decoded content classification information with codes stored at the controller representing classes of video or image data which are not to be displayed, and means for automatically preventing display of said video or image data in a viewable form in response to identifying a match between the decoded content classification information and one of said stored codes.
3.
A controller according to claim 2, including means for end user selection of the codes which the controller is responsive to for preventing display of video or image data.
4.
A controller according to claim 2, wherein said means for preventing display includes an overlay buffer connectable to a display buffer of the display means in response to identifying said data as being of a class prohibited from display, and means for setting said overlay buffer with data for producing a blank image on the display means.
5.
A controller according to claim 1, which is adapted for connection as an integral component of a television set and/or a personal computer

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