초록 ▼

An automated monitoring service downloads image files (including, e.g, graphic and video files) and audio files from various Internet sites, and checks these files for the presence of embedded digital watermark data. When found, such data is decoded and used to identify the proprietor of each waterm

An automated monitoring service downloads image files (including, e.g, graphic and video files) and audio files from various Internet sites, and checks these files for the presence of embedded digital watermark data. When found, such data is decoded and used to identify the proprietor of each watermarked file. The proprietors are alerted to the results of the monitoring operation, often apprising such proprietors of unknown distribution of their image/video/audio properties. Digital watermarks carry control flags used to control viewing or playback depending on content classification.

대표청구항 ▼

The invention 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 invention 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 1, which is adapted for connection as an integral component of a television set and/or a personal computer. 4. A method of controlling displaying on a display means of video or image data received by a controller connected to the display means and connected for receiving data from a data receiver apparatus, the method comprising the steps of: in response to video or image data being transmitted to the data receiver apparatus from a data transmission apparatus, said video or image data representing content for display, said video or image data having been encoded with an invisible digital watermark integrated within the video or image data, the digital watermark representing a content classification for said video or image data, providing said video or image data as an input to the controller; decoding the digital watermark and comparing content classification information obtained thereby with stored classification information identifying classes of video or image data which are not to be displayed; and controlling displaying on a display means of the video or image data in dependence on the content classification information obtained from the digital watermark. 5. A method according to claim 4, wherein said controlling of displaying comprises automatically preventing displaying when said content classification data identifies the data as being of a class which is not to be displayed. 6. A method of encoding video or image material with content classification information, comprising: analyzing the video or image material to determine a content classification; encoding an invisible digital watermark within a displayable data portion of the video or image material, the invisible digital watermark integrated within the video or image data and representative of said content classification, for use by a video or image display controller having means for detecting said watermarks integrated within said displayable data portion of the video or image material, means for decoding said digital watermarks to obtain content classification information, and means for controlling displaying of said video or image material in response to the obtained content classification information. 7. A video and/or image data display system for controlled display of video or image data which has been encoded with invisible digital watermarks integrated within the video or image data and representing a content classification for the video or image data, comprising: a receiver for receiving transmitted video or image data; a display means for displaying the video or image data; and a controller connected between said receiver and said display means, including means for detecting digital watermarks integrated within displayable content of received video or image data, means for decoding the watermarks to obtain content classification information, and means for controlling displaying of the video or image data in response to the content classification information obtained from the watermarks. 8. A computer system having integrated therein a controller for controlling displaying on a display means connected to the computer 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 comprising: means for detecting said digital watermarks integrated within displayable content of the received video or image data; means for decoding said watermarks to obtain content classification information; and means for controlling the displaying of said video or image data on said display means in response to the content classification information obtained from said watermarks. 9. A method according to claim 3, wherein said encoding includes the step of generating a decoder key for use in said decoding, the decoder key being transmitted to the data receiver apparatus in association with said video or image data.