Digital TV Expansion Interface Power Control
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Solution Overview
Problem
Current digital televisions require separate power management for set-top boxes, leading to tedious user operations and energy wastage due to the need for simultaneous on/off control and separate power sources.
Innovation Solution
A digital television with an expansion interface, controller, and voltage converter that supplies power and control signals to external devices, enabling synchronized on/off operations and communication through power supply pins, a wakeup pin, and communication pins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the set-top box is disposed separately from the digital television with separate power interfaces, then the devices can operate independently, but the user operations become tedious and energy is wasted due to separate power management
Solution Approach 1:
The patent combines the power management functions by integrating a power supply interface into the digital television that can directly power the set-top box. The controller in the digital television controls the power supply to the set-top box, merging what were previously separate power management systems into a unified system. This eliminates the need for separate power interfaces and enables synchronized on/off operations, reducing both operational complexity and energy waste.
2Ease of operation
If the digital television controls and powers the external electronic device through the expansion interface, then user operations are simplified and energy efficiency is improved, but the device complexity increases due to additional power supply pins and control circuits
Solution Approach 1:
The expansion interface is designed with multi-functionality, serving both as a communication interface and a power supply interface. The power supply pins in the expansion interface can function as both data/control signal lines and power delivery lines. This universal design allows the same physical interface to handle multiple functions, reducing the need for separate dedicated power connectors and control circuits, thereby minimizing the increase in device complexity while achieving simplified user operations.
Data Source
AI summary
The present disclosure discloses a digital television, an electronic device, and control methods thereof. The digital television includes an expansion interface, a controller and a voltage converter. The controller is connected to the expansion interface, and is connected to an external electronic device through the expansion interface. The expansion interface is connected to the voltage converter, and the controller is configured to control the voltage converter to supply power to the external electronic device through the expansion interface. The controller is further configured to control the external electronic device to be turned on or turned off and communicate with the external electronic device through the expansion interface.