Television Receiver HDMI Power Control for Tuner
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Solution Overview
Problem
Existing television receivers face inefficiencies in power consumption due to overlapping devices with similar functions being active simultaneously, especially when connected to external units, leading to wasted power usage and lack of flexibility in handling diverse external devices.
Innovation Solution
The television receiver employs an HDMI interface with CEC communication protocol to identify overlapping functions between internal and external units, allowing the power supply to be selectively cut off to redundant devices, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices with overlapping functions are installed in the receiver system, then the system functionality and adaptability are improved, but the power consumption increases due to simultaneous operation of redundant devices
Solution Approach 1:
The control unit continuously monitors the operational state of external devices connected via HDMI and automatically adjusts the power supply state of internal overlapping devices based on this feedback information,实现动态功耗优化
Solution Approach 2:
The system dynamically changes the power supply state of internal devices based on real-time detection of external device usage, transitioning between active and power-saving modes to optimize power consumption while maintaining system functionality
2Adaptability or versatility
If the receiver is designed to support multiple types of external units, then the adaptability is improved, but the device complexity increases due to need for multiple detection mechanisms
Solution Approach 1:
The control unit serves multiple functions: it manages HDMI signal transmission, detects external device presence, identifies device types, and controls power supply decisions, consolidating these capabilities into a single multi-functional component rather than requiring separate detection mechanisms for each function
Solution Approach 2:
The HDMI interface acts as an intermediary that carries both data signals and device identification information, allowing the receiver to detect and identify external devices through the existing HDMI communication protocol without requiring additional dedicated detection hardware
Data Source
AI summary
A television receiver cuts power supply to its built-in device which is overlapped with that of the external unit connected to the television receiver for reducing power consumption to cope with diversification of the external unit. The television receiver includes the tuner which receives a television broadcast signal, an external unit connection portion which connects the external unit with the HDMI cable, the HDMI process unit which acquires unit information data from the connected external unit to transmit video/audio data, and the power supply circuit which supplies power to the tuner. If the HDMI process unit determines that the connected external unit includes the same function as the tuner, the control unit allows the power supply circuit to stop power supply to the tuner.