HDCP Port Pre-Authentication for Seamless Media Switching
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Solution Overview
Problem
The existing authentication processes for High-bandwidth Digital Content Protection (HDCP) in media content systems are time-consuming and resource-intensive, requiring repeated validation and authentication each time a connection is changed, leading to delays and inefficiencies.
Innovation Solution
A method and system for pre-authentication of media content ports, where inactive ports are pre-authenticated to serve as backup and replace active ports during a switch, eliminating the need for repeated authentication and reducing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated validation and authentication processes are performed each time a connection changes, then content protection is maintained, but authentication delay increases and system efficiency decreases
Solution Approach 1:
The patent applies preliminary action by performing HDCP authentication in advance before port switching occurs. The system pre-authenticates inactive ports so that when a port switch is needed, the authentication is already complete, eliminating the delay that would otherwise occur during the switching process. This resolves the contradiction by maintaining content protection through pre-established authentication while eliminating authentication delay during connection changes.
2Reliability
If repeated validation and authentication processes are performed each time a connection changes, then content protection is maintained, but system resources are wasted
Solution Approach 1:
The system performs authentication preliminarily before port switching, so that when a port change occurs, the authentication is already complete and no additional authentication resources are consumed during the switching operation. This eliminates wasted resources while maintaining content protection.
Solution Approach 2:
The patent maintains continuous authentication readiness by keeping HDCP engines in a state where they can immediately take over during port switching. The pre-authenticated inactive ports are ready to assume active status without interruption to content protection, ensuring continuous useful action without resource waste.
3Reliability
If HDCP receivers operate as purely slave devices, then content protection is enforced, but the ability to signal status or requests is limited
Solution Approach 1:
The patent enables proactive signaling by having the receiver pre-authenticate ports before needed, allowing the slave device to signal readiness and status in advance rather than passively waiting for master device initialization. This maintains content protection enforcement while improving operational flexibility through advance status signaling.
Data Source
AI summary
A method, apparatus and system for pre-authenticating ports is disclosed. In one embodiment, an active port facilitating communication of media content between a transmitting device and a receiving device is identified, while the active port are associated with a first High-Definition Content Protection (HDCP) engine. Then, inactive ports that are in idle mode serving as backup ports to the active port are identified, while the inactive ports are associated with a second HDCP engine. Pre-authentication of each of the inactive ports is performed so the pre-authenticated inactive ports can subsequently replace the active port if a port switch is performed.