| US 7,567,939 B2 | ||
| Method and apparatus for implementing revocation in broadcast networks | ||
| Brant L. Candelore, Escondido, Calif. (US); and Mark Eyer, San Diego, Calif. (US) | ||
| Assigned to Sony Corporation, Tokyo (Japan); and Sony Electronics Inc., Park Ridge, N.J. (US) | ||
| Filed on Aug. 08, 2006, as Appl. No. 11/500,565. | ||
| Application 11/500565 is a continuation of application No. 09/504968, filed on Feb. 15, 2000, granted, now 7,225,164. | ||
| Prior Publication US 2006/0271492 A1, Nov. 30, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G06F 17/60 (2006.01) | ||
| U.S. Cl. 705—57 [705/64; 705/67] | 29 Claims |
| 1. A method comprising:
receiving copy controlled content;
receiving a plurality of revocation lists each corresponding to a given range of host identifiers, wherein the revocation
list is received in band;
verifying by a computer that an identifier of a digital device is within the range of host identifiers by determining which
revocation list of the plurality of revocation lists comprises a range of host identifiers within which the identifier of
the host device is bound the computer being a digital device;
determining whether the digital device is on any of the revocation lists; and
if the digital device is determined to be on any of the revocation lists, denying the copy controlled content to the digital
device.
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