Patent ID: 9258612
Filing Date: 2016-02-09
CPC Classification: H04N

Claim Text:
1. A method for causing a security processor to transmit an information frame and a piece of additional data to an external apparatus, said information frame comprising a first bit pattern indicating a start of said frame and a second bit pattern indicating an end of said frame, said method comprising: in response to receiving a request, causing said security processor to compute a value of said piece of additional data, said piece of additional data being a response to said request that is chosen from among at least two possible responses to said request, causing said security processor to compute a time lag that is a function of said computed value of said piece of additional data, and causing said security processor to transmit said piece of additional data by delaying a start of a transmission of said information frame from the security processor to the external apparatus by said time lag; wherein the method further comprises building the information frame independently of the piece of additional data.