Head-Up Speed Limit Display Using Map and Position Data
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Solution Overview
Problem
Current information processing devices lack the capability to conveniently and reliably provide drivers with real-time legal speed limit information and other essential travel-related data without diverting their attention from the road.
Innovation Solution
An information processing device integrating a sensor portion for position information, a communication portion for map and legal speed limit data, and a display portion to present this information, allowing drivers to access legal speed limits, traffic conditions, tourist information, and weather updates without taking their eyes off the road, using a combination of GPS, network communication, and display technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drivers check speed limit information using traditional devices, then they can obtain legal speed limit information, but they must divert their attention from the road
Solution Approach 1:
The patent introduces a combiner as an intermediary surface that reflects or transmits image information from the display device to the driver's line of sight. This allows the driver to view speed limit information without diverting attention from the road, as the information appears to be displayed on the road surface itself through optical reflection or transmission properties of the combiner material
Solution Approach 2:
The patent projects speed limit information onto a two-dimensional surface (the combiner) that appears to be in the road plane, creating a virtual display dimension that overlays with the driver's natural field of view. This dimensional transformation allows information access without requiring the driver to shift attention to a separate display device
2Reliability
If drivers maintain constant attention to the road, then driving safety is improved, but they cannot confirm legal speed limits
Solution Approach 1:
The system performs preliminary action by continuously monitoring the vehicle's position via GPS and proactively displaying speed limit information in advance before the driver needs it. The arithmetic device identifies upcoming speed limit changes and the display device presents this information on the combiner ahead of time, allowing the driver to maintain road attention while still being informed of relevant speed limits
Solution Approach 2:
The system implements feedback by continuously tracking the vehicle's position information and dynamically updating the displayed speed limit information accordingly. The arithmetic device processes real-time position data and adjusts the displayed speed limit to match the current or upcoming road section, ensuring the driver always has accurate speed limit information without needing to actively query it
3Loss of information
If the display device shows detailed information, then driver awareness is improved, but the device complexity increases
Solution Approach 1:
The patent applies multi-functionality by integrating multiple information display capabilities into a single combiner-based system. The display device can present various types of information including speed limits, traffic conditions, and tourist information all through the same optical combiner interface, eliminating the need for separate display devices for each information type and reducing overall system complexity
Solution Approach 2:
The system merges the display device, GPS receiver, communication device, and combiner into an integrated information presentation system. All these components work together through a unified architecture where the arithmetic device processes various data sources and the display device presents consolidated information through the combiner, reducing complexity compared to having separate systems for each function
Data Source
AI summary
A novel information processing device that is highly convenient or reliable is provided. The information processing device includes a sensor portion, a communication portion, a display portion, and an arithmetic device; the sensor portion has a function of obtaining position information, and the communication portion has a function of obtaining map information and legal speed limit information. The arithmetic device identifies first legal speed limit information from the map information on the basis of the position information, the arithmetic device generates first image information including the first legal speed limit information, and the display portion has a function of displaying the first image information.