A controlling device provides conditional access to secured content renderable by an appliance. The controlling device transmits a data frame to the appliance and encrypts at least a part of the data frame that includes data to be used by the appliance to provide access to the secured content. At the appliance a decryption key complimentary to the encryption key is used to decrypt the received the data frame. The appliance allows the secured content to be rendered only after the appliance determines that the data in the received, decrypted data frame includes the data the appliance requires to provide access to the secured content.
申请公布号
EP1579626(A1)
申请公布日期
2005.09.28
申请号
EP20030813334
申请日期
2003.08.13
申请人
UNIVERSAL ELECTRONICS, INC.
发明人
ARLING, PAUL, D.;HAYES, PATRICK, H.;SCOTT, WAYNE;CHAMBERS, CHRISTOPHER, ALAN