Method and device for providing conditional access

• US 20030056211A1
• Filed: 09/06/2002
• Published: 03/20/2003
• Est. Priority Date: 09/10/2001
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Van Den Heuvel, Sebastiaan Antonius Fransiscus Arnoldus
• Application Number:
  US10/236,181
• Publication Number:
  US 20030056211A1
• Time in Patent Office: Days
• US Class Current: 725/25
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/44008 involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/4532 involving end-user characteristics, e.g. viewer profile, preferences monitoring of user activities for profile generation for accessing a video database G06F16/739; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

A method of and a device (100) arranged for providing conditional access to a content item a copy of the content item is stored on a storage medium (110). Monitoring means (111) monitor a transmission channel for a subsequent transmission of the content item, and upon detection of such a subsequent transmission, rights collection means (112) collect at least one right, preferably a playback right, associated with the subsequent transmission. The at least one right is then stored on the storage medium (110) as a right associated with the stored specimen. Optionally the right can be transferred to a portable device (120).

Claims

1. A method of providing conditional access to a content item, a specimen of the content item being stored on a storage medium, the method comprising monitoring a transmission channel for a subsequent transmission of a further specimen of the content item, collecting at least one right associated with the subsequent transmission, and storing the at least one right as a right associated with the stored specimen.

2. The method of claim 1, in which collecting the at least one right comprises incrementing a counter indicative of the number of times the stored specimen may be played back.

3. The method of claim 2, whereby the specimen is stored on the storage medium (110) with said counter having an initial value of zero.

4. A device arranged for providing conditional access to a content item, comprising a storage medium for storing a specimen of the content item, monitoring means for monitoring a transmission channel for a subsequent transmission of a further specimen of the content item, and rights collection means for collecting at least one right associated with the subsequent transmission and for storing the at least one right as a right associated with the stored specimen.

5. The device of claim 4, whereby the transmission channel is a broadcast channel.

6. The device of claim 4, the monitoring means being arranged for computing a hash value for the further specimen of the content item being transmitted over the transmission channel and for comparing the hash value against a further hash value for the stored specimen.

7. The device of claim 4, the monitoring means being arranged to simultaneously monitor multiple transmission channels for the subsequent transmission.

8. The device of claim 4, further comprising transfer means for transferring the stored specimen to a portable device together with the stored at least one right.