Peripheral Power Management for Authentication Devices
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Solution Overview
Problem
Conventional image processing apparatuses, such as MFPs, face challenges in power saving as they shift all connected peripheral devices to a disuse state, which is undesirable for devices like authentication card readers that need to remain active for user authentication.
Innovation Solution
An information processing apparatus with a connection unit, storage unit, acquisition unit, specification unit, and control unit that identifies connected peripheral devices and adjusts power saving states based on their type, allowing specific devices like authentication card readers to remain active while others can be powered down.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the image processing apparatus shifts to a power saving state, then power consumption is reduced, but connected peripheral devices are shifted to a disuse state which prevents authentication operations
Solution Approach 1:
The patent segments the power management of peripheral devices from the main apparatus power state. Instead of shifting all connected peripheral devices to a disuse state when the apparatus enters power saving mode, the system selectively maintains power supply to specific peripheral devices (like authentication card readers) while allowing other devices to enter disuse state. This segmentation resolves the contradiction by enabling power saving for the apparatus while preserving authentication capability.
Solution Approach 2:
The patent applies local quality by differentiating power management policies for different peripheral devices based on their functionality. The system identifies authentication card readers through acquisition units and setting information, then applies a specific power management rule that maintains their operational state even when the apparatus is in power saving mode. This local differentiation ensures that critical authentication functions remain reliable while other non-essential devices can be powered down.
2Loss of energy
If all peripheral devices are shifted to disuse state during power saving, then overall power consumption is reduced, but devices requiring continuous operation cannot function
Solution Approach 1:
The patent implements dynamic power management where the power state of peripheral devices is adjusted based on real-time identification of device type and pre-configured setting information. The system dynamically determines which devices should remain powered during power saving mode versus which can enter disuse state, rather than applying a static all-or-nothing approach. This dynamic adaptation allows the system to maintain versatility for authentication operations while achieving power savings for other devices.
Solution Approach 2:
The patent changes the power supply parameter selectively for different peripheral devices. Instead of uniformly changing the power state for all devices, the system modifies the power parameter only for non-critical devices while maintaining normal power supply to authentication card readers. This selective parameter change enables the system to achieve power consumption reduction without sacrificing authentication capability.
Data Source
AI summary
An information processing apparatus which operates in one of a normal power state and a plurality of power saving states, includes a storage unit to store power saving information that designates one of the plurality of power saving states, an acquisition unit to acquire from the connected peripheral device identification information for identifying the peripheral device, a specification unit to specify the power saving information associated with the acquired identification information based on the identification information and the setting information, and a control unit to control the apparatus to shift to the power saving state designated by the power saving information to the power saving state that is designated by the specified power saving information.