Patent ID: 8681977

Claim:
A system for enabling/disabling Display Data Channel (DDC) access to enable/disable a security protocol, the system comprising: at least one source; at least one sink; and a switcher device communicatively coupled in-between the at least one source and the at least one sink, the switcher device comprises: a multiplexer coupled in-between at least one input and output cards and configured to transmit an audiovisual signal from the at least one input card to a first and at least a second output card via a physical; wherein the multiplexer is configured to dynamically switch between the first and at least second output card based on a user control signal that activates one of the at least one sinks, wherein each of the output cards is coupled to the at least one sink; wherein the input card comprises: an integrated circuit that includes a security protocol enabled receiver; and an Extended Display Identification Data (EDID) memory electrically coupled to the integrated circuit, wherein the input card is configured to detect the presence of an event signal from at least one user interfaced device, wherein in response to the detection of the event signal, a processor is configured to change an address of an HDCP enabled receiver from a second address to a first address for enabling the at least one source to authenticate with the input card and enabling the output card to authenticate with the at least one sink for security protocol encryption and the input card is configured to permit the transmission of audiovisual signal from the at least one source to the at least one sink, and disabling control of the at least one sink from being able to record since the audiovisual signal contains copy protected content; wherein in response to the non-detection of the event signal, the processor is configured to change the address of the HDCP enabled receiver from the first address to the second address for disabling the at least one source from initiating a first authentication with the input card, therefore the output card also does not attempt to initiate a second authentication with the at least one sink for security protocol encryption and the input card is configured to permit the transmission of audiovisual signal from the at least one source to the at least one sink; and enabling control of the at least one sink from being able to record since the audiovisual signal contains non-copy protected content.