AV Device Mode Transition Logic Preventing Signal Conflicts
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Solution Overview
Problem
Conventional audio/video (AV) devices face inefficiencies when coupled together, as they often risk damaging transmission hardware by attempting to drive power and data signals in opposite directions, leading to potential conflicts and inefficiencies in communication.
Innovation Solution
The implementation of AV logic that selectively controls AV devices to transition between source and sink operation modes based on connectivity and power states, using communication logic compatible with standards like HDMI, MHL, and DisplayPort, to prevent conflicting signals and ensure safe data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If AV devices are coupled together to exchange information, then communication capability is improved, but hardware damage risk increases due to conflicting power and data signals
Solution Approach 1:
The patent implements dynamic role assignment where AV devices can transition between source and sink modes based on real-time connectivity detection and power state monitoring. The AV logic continuously evaluates the operational state and automatically switches roles to prevent signal conflicts, making the system adaptive rather than static.
Solution Approach 2:
The patent introduces an intermediary AV logic layer that mediates between the physical connector and the AV communication protocols. This intermediary detects connectivity characteristics, determines appropriate operational modes, and controls the transition between source and sink functions, preventing direct conflict between opposing signal drivers.
2Adaptability or versatility
If AV devices support multiple operation modes, then versatility is improved, but device complexity increases
Solution Approach 1:
The AV logic performs self-diagnosis by automatically detecting connectivity characteristics and power states, then autonomously determines the appropriate operational mode without requiring external configuration or complex user intervention. The system serves itself by monitoring its own state and making intelligent decisions.
Solution Approach 2:
The patent designs a universal AV device architecture that can function as both source and sink through a single connector, eliminating the need for separate hardware configurations. The same physical interface supports multiple operational roles, reducing overall system complexity despite increased functional versatility.
3Area of stationary object
If AV devices use single connectors for bidirectional communication, then area is reduced, but signal conflict risk increases
Solution Approach 1:
The patent employs dynamic role assignment where the connector's functional configuration changes based on real-time operational state. The AV logic monitors power states and connectivity characteristics, then dynamically switches between source and sink modes to ensure that power and data signals always flow in the correct direction, preventing conflicts despite using a single physical connector.
Data Source
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AI summary
Techniques and mechanisms for determining an operation mode of an audio-video (AV) device. In an embodiment, communication logic of the AV device may be configured at different times for different ones of a plurality of operation modes including an AV source operation mode for providing AV information to another device and an AV sink operation mode for receiving AV information from another device. In response to a detected event, control logic initializes the communication logic of the AV device into a default mode which prevents operation of the communication logic as an AV source.