Patent ID: 7804957
Filing Date: 2010-09-28
Classification: H04N

Abstract:
1. A computer-implemented copy protection method of a digital cable broadcasting channel according to a predetermined digital cable broadcasting standard, the method comprising: selecting a first digital cable broadcasting channel; and exchanging a copy protection value of the predetermined digital cable broadcasting standard between a CableCARD module and a video device, wherein the exchanged copy protection value corresponds to the selected first digital cable broadcasting channel and the copy protection value is exchanged independent of at least one former channel which is selected prior to the first digital cable broadcasting channel, wherein the copy protection value is always exchanged between the CableCARD module and the video device in response to the selection of the first digital cable broadcasting channel, and the exchange occurs irrespective of a type of the at least one former channel, and wherein the at least one former channel comprises an analog broadcasting channel which is selected prior to the first digital cable broadcasting channel.