Adaptive Power Configuration for MHL and HDMI Multimedia Devices
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Solution Overview
Problem
Existing HDMI streaming devices require physical connection and power through both HDMI and USB ports, lacking adaptive power configuration to switch between USB and MHL power sources efficiently.
Innovation Solution
The streaming apparatus includes circuitry to detect the USB supply connection state and dynamically switch between HDMI and MHL modes, selecting power from either the USB or MHL supply based on the connection state, enabling adaptive power configuration and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the streaming device uses both HDMI and USB connections for power supply, then the device can operate with stable power, but the device complexity increases due to requiring multiple physical connections
Solution Approach 1:
The patent combines USB and MHL power supply capabilities into a single HDMI connectable device. The device integrates both USB power input circuitry and MHL power input circuitry, allowing it to receive power through a single HDMI connection that can carry both data and power signals, thereby reducing the need for multiple separate physical connections while maintaining reliable power supply
Solution Approach 2:
The HDMI connectable device is designed to support multiple power supply modes (USB power and MHL power) through a single interface. The device can automatically detect and adapt to different power source types, making the single device universally compatible with different power configurations without requiring separate specialized devices for each power type
2Adaptability or versatility
If the streaming device supports both USB and MHL power supply modes, then the adaptability improves, but the device complexity increases due to power management circuitry
Solution Approach 1:
The power management system in the device is designed to be dynamic rather than static. The device continuously monitors the connection state of USB supply and automatically switches between USB power mode and MHL power mode based on real-time conditions. This dynamic adaptation allows the device to support multiple power sources without requiring complex manual configuration or multiple fixed power paths
Solution Approach 2:
The device incorporates automatic detection and selection logic that enables it to self-manage its power supply configuration. The processing circuitry automatically detects whether USB power is available and connected, then autonomously selects the appropriate power mode (USB or MHL) without user intervention, reducing the perceived complexity for the user while maintaining internal adaptability
3Ease of operation
If the device automatically switches between HDMI and MHL modes based on USB connection state, then the ease of operation improves, but the loss of time occurs during mode switching detection
Solution Approach 1:
The device performs preliminary detection of the USB connection state during the initial connection phase or during idle periods before full operation is required. By detecting and preparing the appropriate power mode in advance, the device minimizes the time required for mode switching when actual content playback or operation begins, thus improving ease of operation while reducing perceptible detection time
Data Source
AI summary
A streaming apparatus includes circuitry accommodated in a High-Definition Multimedia Interface (HDMI) connectable device to detect a connection state of a Universal Serial Bus (USB) supply to the streaming apparatus; set an operational mode to a HDMI mode or a Mobile High Definition Link (MHL) mode based on the connection state of the USB supply to the streaming apparatus. The apparatus selects a supply power from the USB power supply or the MHL power supply based on the connection state of the USB supply to the apparatus.