Patent ID: 8713316
Filing Date: 2014-04-29
Classification: H04L

Abstract:
1. A system for enabling/disabling Display Data Channel (DCC) access to enable/disable a security protocol, the system comprising: at least one source; at least one sink; a switcher device communicatively coupled in-between the at least one source and the at least one sink, the switch 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 connection; 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 High-Bandwidth Digital Content Protection (HDCP) enabled receiver; and a switch coupled in-between the HDCP enabled receiver and an Extended Display Identification Data (EDID) memory, 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, the switch is configured to dynamically switch to a closed position, and change an address of an HDCP enabled receiver from a second address to a first address, in order to enable the at least one source configured to perform a first authentication with the input card and the output card configured to perform a second authentication with the at least one sink for security protocol encryption and the input card transmission of the audiovisual signal from the at least one source 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, and wherein in response to the non-detection of the event signal, the switch is configured to dynamically switch to an open position, and change the address of the HDCP enabled receiver from the first address to the second address, in order to disable the at least one source from 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.