Fixed Phrase Insertion for Transit Guidance Data Reduction
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Solution Overview
Problem
Existing systems for guiding users at transportation sites, such as trains and buses, face challenges in efficiently providing guidance information due to the large amount of data required for various guidance scenarios, particularly for hard-of-hearing individuals and foreign language speakers.
Innovation Solution
An information provision system that uses a shared fixed phrase with insertable phrases, transmitted via audio communication, reduces data storage and transmission needs by allowing a single fixed phrase to convey multiple guidance messages, utilizing audio components and different frequency bands for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guidance information is individually prepared for each content (e.g., for each stop), then the guidance information can be comprehensive and accurate, but the amount of data required becomes large
Solution Approach 1:
The guidance information is segmented into a fixed phrase portion and an insertion phrase portion. The fixed phrase contains common guidance content that remains the same across multiple scenarios, while the insertion phrase contains variable information specific to each situation (e.g., station names, line names). This segmentation allows the system to store only one copy of the fixed phrase and reuse it with different insertion phrases, significantly reducing data storage requirements while maintaining comprehensive and accurate guidance information.
Solution Approach 2:
The fixed phrase is designed to be universal and can be applied to multiple different guidance scenarios. By creating a single fixed phrase template that can accommodate various insertion phrases, the system achieves multi-functionality where one base template serves multiple purposes across different stops, lines, and guidance situations, eliminating the need to create separate complete guidance texts for each scenario.
2Adaptability or versatility
If multiple pieces of guidance information with different words are prepared and selectively provided, then the guidance can be customized for different situations, but the data storage capacity required increases
Solution Approach 1:
The guidance information structure is divided into a fixed phrase portion (common to all scenarios) and an insertion phrase portion (variable for each scenario). This segmentation enables the system to maintain high adaptability by selecting different insertion phrases while reusing the same fixed phrase template, achieving customization without proportionally increasing storage capacity.
Solution Approach 2:
Instead of storing multiple complete copies of guidance information for different scenarios, the system stores one master fixed phrase template and generates customized guidance by inserting appropriate phrases into the template. This copying approach allows unlimited customization possibilities while requiring minimal storage space, as the system only needs to store the base template and a set of reusable insertion phrases.
Data Source
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AI summary
Transmission means (160) transmits, by near field communication, fixed phrase information (DA), of guidance information that guides a user, representative of a fixed phrase and insertion phrase information (DB) selected from among a plurality of pieces of insertion phrase information (DB) representative of different insertion phrases to be inserted in the fixed phrase, to a terminal device (200) capable of presenting, to the user, presentation information (G) corresponding to the guidance information where the insertion phrase represented by the insertion phrase information (DB) is inserted in the fixed phrase represented by the fixed phrase information (DA).