Notebook Power Transmission Device Lid-Actuated Boot Circuit
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Solution Overview
Problem
Conventional notebook computers require a power button on the side, which can be inconvenient for booting up when the lid is opened, as the power button is not directly accessible in this configuration.
Innovation Solution
A power transmission device with an actuating circuit and a hold circuit is integrated, allowing the notebook computer to boot up when the lid is opened by using a normally open switch and light-emitting diodes to establish a conductive state, and maintain power when the lid is closed, using a normally closed switch for shutdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the power button is placed on the side of the computer host, then the computer can be powered on, but it becomes inconvenient when the lid is opened as the power button is not directly accessible
Solution Approach 1:
The patent introduces a power transmission device as an intermediary mechanism between the lid opening action and the power button activation. This device includes a normally open switch that detects lid opening and automatically closes the power button circuit, eliminating the need for direct physical access to the power button while maintaining the existing button structure.
Solution Approach 2:
The patent replaces the traditional mechanical direct-press mechanism with an automated electrical switching system. The normally open switch converts the mechanical lid opening motion into an electrical signal that automatically activates the power button circuit, substituting manual mechanical operation with an automated electromechanical system.
2Extent of automation
If a normally open switch is used to detect lid opening, then automatic power-on is enabled, but the circuit complexity increases
Solution Approach 1:
The patent employs a normally open switch that is pre-configured in the circuit before the lid is opened. When the lid opens, the switch automatically transitions to the closed state, initiating the power-on sequence in advance without requiring additional complex control logic or multiple switching stages.
Solution Approach 2:
The normally open switch automatically detects and responds to the lid opening action without requiring external intervention or complex processing. The switch self-activates the power button circuit through its inherent mechanical-to-electrical conversion, eliminating the need for additional sensors, microcontrollers, or control algorithms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables fast and simple boot-up by opening the lid and continuous operation when closed, with efficient power management through the power transmission device, ensuring the notebook computer remains powered until shutdown is initiated.
Implementation Method 1
A power transmission device with an actuating circuit and a hold circuit is integrated, allowing the notebook computer to boot up when the lid is opened by using a normally open switch and light-emitting diodes to establish a conductive state
Data Source
AI summary
This disclosure relates to a notebook computer including a computer body and a power transmission device which having an input port and an output port opposite to each other. The input port is configured to be electrically connected to a power supply. The output port is electrically connected to the computer body. The power transmission device includes an actuating circuit and a hold circuit. The actuating circuit is electrically connected between the input port and the output port. The hold circuit is connected in parallel to the actuating circuit.