Image Processing Device Position Detection
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Solution Overview
Problem
Existing image processing devices, such as printers, may inadvertently initiate printing when a user passes by, leading to inconvenience as they can execute printing operations without the user's intention, due to incorrect detection of the user's presence.
Innovation Solution
An image processing device that acquires distance and direction information from a terminal device using radio waves, and only performs image processing when the terminal device is within a predetermined range and exhibits a low rate of change in position, ensuring accurate detection of the user's intention to use the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image processing device detects a terminal device using radio waves to determine user presence, then the convenience for users is improved by enabling automatic printing, but the device may execute printing by mistake when a user simply passes by, reducing convenience
Solution Approach 1:
The system dynamically evaluates multiple parameters (distance, direction, rate of change) rather than using a static presence detection threshold. By continuously monitoring the rate of change in distance and direction, the system adapts its printing decision based on the user's movement state, distinguishing between stationary users (intentional) and moving users (passing by).
Solution Approach 2:
The invention introduces additional detection parameters (rate of change in distance, rate of change in direction) beyond basic presence detection. By setting threshold values for these parameters, the system transforms the binary presence/absence detection into a multi-dimensional evaluation, improving reliability while maintaining automatic printing convenience.
2Extent of automation
If the device uses direction of arrival and intensity of reception to determine user presence, then printing can be initiated automatically, but printing may be executed even when the user does not wish it, reducing user convenience
Solution Approach 1:
The system incorporates feedback mechanisms by continuously monitoring multiple parameters (distance, direction, rate of change) and using this information to adjust printing decisions. The rate of change parameters provide feedback on user movement, allowing the system to distinguish between intentional presence (low rate of change) and passing by (high rate of change), thereby improving both automation reliability and user convenience.
3Productivity
If the image processing device initiates printing when a terminal device is detected within range, then printing efficiency is improved, but unintended printing operations occur, reducing overall efficiency
Solution Approach 1:
The system performs preliminary evaluation of multiple parameters (distance, direction, rate of change) before initiating printing. By assessing the rate of change in advance, the system pre-determines whether the detected terminal device represents an intentional user presence, thereby preventing unintended printing operations and improving both printing accuracy and overall efficiency.
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 unintended printing operations by accurately determining the user's presence and intention, enhancing user convenience by ensuring that image processing is only initiated when the user is within the designated range and stationary, thereby improving the security and efficiency of the printing process.
Implementation Method 1
acquires distance information representing a distance between the terminal device and the image processing device, based on a radio wave arriving from the terminal device
Implementation Method 2
acquires direction information representing a direction of the terminal device in relation to the image processing device, based on the radio wave arriving from the terminal device
Data Source
AI summary
A distance information acquisition unit acquires distance information representing a distance between a terminal device and an image processing device, based on a radio wave arriving from the terminal device. A direction information acquisition unit acquires direction information representing a direction of the terminal device in relation to the image processing device, based on the radio wave arriving from the terminal device. A controller performs processing to perform image processing, based on the distance information and the direction information. The controller performs processing to perform image processing, when a position of the terminal device is within a predetermined range in relation to the image processing device and a rate of change in at least one of the distance from the terminal device and the direction of the terminal device is equal to or lower than a threshold.