ToF Presence Detection Control to Prevent Unnecessary Bootup
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Solution Overview
Problem
Existing systems transition to standby state based on triggers other than person detection, leading to potential unnecessary bootup due to false positives or temporary absences.
Innovation Solution
An information processing apparatus with multiple detection modes and control processes to prevent unnecessary bootup by adjusting detection times and modes based on person presence and absence, using a ToF sensor to detect and adapt power states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system maintains detection processing in the second detection mode for a certain period of time after transitioning from the first detection mode to the second detection mode, then the system can detect temporary or false positive person absences and avoid unnecessary standby state transitions, but the system may perform unnecessary bootup when transitioning to standby state due to other triggers (e.g., OS sleep function, power button operation) if a person is detected during the waiting period
Solution Approach 1:
The patent dynamically adjusts the detection mode based on the transition trigger type. When the transition to standby state is triggered by person detection processing, the system uses the second detection mode with motion detection for a certain period to avoid false positives. When triggered by other causes (OS sleep function, power button operation), the system immediately switches to the third detection mode without waiting, thereby preventing unnecessary bootup while maintaining reliable person detection when needed
Solution Approach 2:
The patent changes the detection mode parameter based on the transition trigger. In the second detection mode, the system detects motion of objects to determine person presence with higher sensitivity. In the third detection mode, the system reduces detection sensitivity and power consumption. By switching between these modes based on the trigger type, the system optimizes both detection reliability and prevents harmful unnecessary bootup
2Measurement precision
If the system uses the first detection mode to detect person presence with high accuracy, then the system can reliably determine whether to maintain normal operating state or transition to standby state, but the system consumes higher power during detection processing
Solution Approach 1:
The patent implements periodic detection with varying intensities. The system alternates between the first detection mode (high precision, high power consumption) and the third detection mode (low precision, low power consumption). By using the second detection mode only temporarily after person absence detection and switching to the third detection mode during stable standby state, the system achieves reliable person detection while reducing overall power consumption
Solution Approach 2:
The patent applies partial high-precision detection only when necessary. Instead of continuously using the first detection mode, the system uses it selectively when transitioning from normal to standby state to detect person absence. During the standby state, the system uses the lower-power third detection mode, thereby achieving sufficient detection precision with reduced power consumption
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
Prevents unnecessary system transitions and power consumption by dynamically adjusting detection modes and times, ensuring accurate person detection and reducing bootup errors.
Implementation Method 1
a distance sensor (distance measuring sensor) that detects a distance using infrared rays
Implementation Method 2
detects a distance using infrared rays
Data Source
AI summary
An information processing apparatus performs detection processing having a first detection mode, a second detection mode, and a third detection mode, wherein the first detection mode makes a transition to a second detection mode when it is determined that a detected person becomes absent, the second detection mode to return to the first detection mode when the motion of an object is detected during a certain period of time, or to make a transition to a third detection mode when the motion of an object is not detected during the certain period of time, and the third detection mode to detect an object with low power consumption, wherein when an operating state of a system is controlled to a first operating state or a second operating state with power consumption lower than the first operating state based on a processing trigger other than the detection processing.