Computer Device USB Module Power Supply Circuit Integration
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Solution Overview
Problem
Conventional computer devices require additional voltage regulators to convert power for built-in USB devices, leading to inefficiency and increased costs due to the need for multiple voltage levels (5 volts for USB interface and 3.3 volts for image sensors and USB bridges), resulting in power wastage and unnecessary circuit complexity.
Innovation Solution
A computer device design that utilizes the existing power supply circuit to directly provide operating power to the USB module, eliminating the need for additional voltage regulators by ensuring the USB module operates within the voltage level provided by the power supply circuit, thus bypassing the USB specification's power voltage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional voltage regulators are used to convert power for USB devices, then USB devices can operate at the required 5 volts, but device complexity and cost increase
Solution Approach 1:
The patent extracts the USB device from the traditional USB power supply path and connects it directly to the computer's internal power supply circuit. This removes the need for USB voltage regulators from the system, reducing circuit complexity while maintaining USB device operation through direct connection to the computer's existing 3.3V or 5V power output.
Solution Approach 2:
The patent makes the computer's power supply circuit serve multiple functions: it provides power for both internal components and external USB devices simultaneously. By utilizing the existing power supply circuit's capability to output multiple voltage levels, the system eliminates dedicated USB voltage conversion circuits while maintaining universal compatibility with USB devices.
2Reliability
If multiple voltage regulators are used to provide different voltage levels, then both USB interface and image sensor can operate at their required voltages, but power consumption increases
Solution Approach 1:
The patent merges the power supply paths by connecting both the USB device and image sensor directly to the computer's power supply circuit. This consolidation eliminates redundant voltage conversion stages and reduces overall power consumption by utilizing the computer's existing power output capabilities rather than adding separate power conversion circuits for each component.
3Reliability
If voltage regulators are added to convert 19V to 5V and then to 3.3V, then USB devices and image sensors can operate, but manufacturing cost increases
Solution Approach 1:
The patent removes USB voltage regulators from the bill of materials by directly connecting USB devices to the computer's power supply circuit. This extraction of unnecessary components reduces manufacturing costs while maintaining full operational capability through the computer's existing multi-voltage power output.
4Reliability
If additional voltage regulators are installed, then USB interface power requirements are met, but the system wastes electricity due to voltage conversion
Solution Approach 1:
The patent enables the computer's power supply circuit to directly serve USB devices by providing the required voltage levels without external conversion. The power supply circuit's inherent capability to output multiple voltage levels allows it to self-serve USB power requirements, eliminating energy-wasting voltage conversion processes while maintaining USB interface operation.
Data Source
AI summary
A computer device includes a controller, a power supply circuit and a universal serial bus (USB) module. The controller is used for transmitting a data signal. The power supply circuit is used for supplying operating power. The USB module includes a USB bridge and a core circuit. The USB bridge is used for transmitting the data signal, and it operates according to the operating power generated by the power supply circuit. The core circuit operates according to the operating power generated by the power supply circuit.