Card Reader Standby Power Display for Portable Devices
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Solution Overview
Problem
Portable electronic devices, such as notebook computers, experience long booting times and unnecessary power consumption when performing simple tasks due to the need to activate hardware and software, even when only minimal power is required.
Innovation Solution
A card reader system that utilizes standby power to display data from a memory card, including a processor and memory card controller, which detects the insertion of a memory card and supplies standby power to the card reader and screen, allowing data to be read and displayed without booting the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the portable electronic apparatus is booted to perform simple tasks, then the device can operate normally, but the booting time is long and power consumption is unnecessary
Solution Approach 1:
The patent segments the power supply system into different modes: standby mode for minimal power consumption and full boot mode for complete operation. The card reader can operate independently in standby mode using only standby power, while the main device remains in a low-power state. This segmentation allows simple tasks to be performed without booting the entire device, thereby reducing booting time and unnecessary power consumption while maintaining operating efficiency for such tasks.
2Productivity
If the portable electronic apparatus is booted to perform simple tasks, then the device can operate normally, but power consumption increases unnecessarily
Solution Approach 1:
The patent divides the system into a power-intensive main device and a low-power card reader that can function independently in standby mode. By segmenting the operational load, simple tasks like viewing photos or music playback can be performed by the card reader using minimal standby power, avoiding the unnecessary power consumption that would occur if the entire device were booted.
Solution Approach 2:
Instead of booting the complete device for simple tasks, the patent enables partial operation where only the card reader and its necessary components are activated using standby power. This partial action approach allows sufficient functionality for simple tasks without the excessive action of booting the entire system, thereby optimizing power consumption.
3Use of energy by moving object
If standby power is used to display memory card data, then power consumption is reduced, but the device must remain in standby mode
Solution Approach 1:
The patent makes the standby power supply universal by enabling multiple functions to operate from standby power, including card reader operations and display functions. This multi-functionality allows the device to perform various tasks like viewing photos, playing music, or receiving notifications without requiring a full boot, thereby maintaining ease of operation while significantly reducing power consumption.
Data Source
AI summary
A card reader that is connected to a portable electronic apparatus includes a processor and a memory card controller. The processor receives a trigger signal from the portable electronic apparatus when the portable electronic apparatus is in a standby mode. The memory card controller detects whether at least one memory card is inserted into the card reader and generates a memory card inserting status accordingly. The portable electronic apparatus provides a standby power to the card reader and a first screen based on the trigger signal. The processor receives the memory card inserting status; according to the memory card inserting status, the processor reads contents of the memory card, so that the contents of the memory card are displayed on the first screen.