Dual-Screen Gaze Guidance for Camera Alignment

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Solution Overview

Problem

Conventional input/output devices, such as ATMs, require manual adjustment of camera angles to capture a front-face image of operators, making it difficult for operators to naturally recognize and align with the imaging device without conscious sight guidance.

Innovation Solution

An input/output device with a screen controller that coordinates two display screens to guide the operator's eyes toward an imaging device interposed between them, allowing for natural alignment without conscious sight guidance and enabling clear front-face image capture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the imaging device is positioned to capture the operator's face, then the authentication accuracy is improved, but the operator cannot naturally recognize the imaging device without conscious sight guidance

Engineering Contradiction:

Improveauthentication accuracyVSAvoidnatural recognition of imaging device

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent introduces a screen as an intermediary element that displays visual guidance information (arrows, indicators) to guide the operator's gaze toward the imaging device. This mediator bridges the gap between the operator and the imaging device, enabling natural recognition without requiring the operator to consciously locate the camera.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent utilizes visual display elements on the screen that change or highlight specific areas to guide the operator's attention. By displaying directional indicators or highlighted regions on the screen, the system directs the operator's gaze naturally toward the imaging device position.

Inventive Principle:

Principle #32Color changes

2Ease of operation

If multiple display screens are used to provide visual guidance, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:

Improvevisual guidance capabilityVSAvoidnumber of display screens

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent makes the existing display screen serve multiple functions: displaying transaction information and providing gaze guidance. By overlaying guidance indicators on the transaction display, the system eliminates the need for separate guidance devices while maintaining comprehensive functionality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the guidance display function with the existing transaction display screen. Rather than adding a separate guidance device, the system merges the gaze guidance capability into the already-present display screen, reducing overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11475715B2Input/output device, screen control device, and screen control method

Publication Date: 2022.10.18 NEC CORP

AI summary

An input/output device is configured to input or output operation information of an operator with a terminal device. The input/output device includes a display having a first display screen and a second display screen, an imaging device which is interposed between the first display screen and the second display screen and configured to capture an image of the operator positioned in the foreside of the terminal device, and a screen controller configured to control coordination of the first display screen and the second display screen and to thereby guide operator's eyes toward the imaging device interposed between the first display screen and the second display screen.