Information Provision System for Sound Communication Reliability
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Solution Overview
Problem
Existing technologies face challenges in providing facility-related information to terminal apparatuses via sound communication, especially when the sound output device is limited in its frequency range, making it difficult to transmit information effectively.
Innovation Solution
An information provision system that receives terminal position information, identifies corresponding distribution information from a reference table associating sound output positions with sound output information, and transmits this information to the terminal apparatus, ensuring information delivery even in limited sound communication situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound communication is used to transmit identification information to terminal apparatuses, then information can be provided to users, but the method becomes limited when sound output devices cannot output in the required frequency band
Solution Approach 1:
The patent introduces an information provision system as an intermediary between sound output devices and terminal apparatuses. This mediator receives position information from terminals, queries a reference table to obtain corresponding distribution information, and transmits it back to terminals. This intermediary approach allows information delivery to proceed through an alternative pathway when direct sound communication is unavailable, thereby resolving the contradiction between maintaining reliable information delivery and adapting to limited sound communication capabilities.
Solution Approach 2:
The patent replaces the acoustic transmission mechanism (sound waves in frequency band) with an electronic data transmission mechanism (communication signals). Instead of relying on sound output devices to transmit identification information acoustically, the system uses electronic communication to transmit distribution information directly to terminal apparatuses. This substitution eliminates the frequency band limitations of sound output devices while maintaining the core function of information delivery.
2Reliability
If a reference table is used to map sound output positions to distribution information, then information can be provided even when sound communication is limited, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-establishing a reference table that maps sound output position information to corresponding distribution information before actual information delivery is needed. This reference table is constructed in advance, storing the correspondence relationships between positions and information. When information delivery is required, the system simply queries this pre-prepared table rather than performing complex real-time analysis, thereby reducing operational complexity while ensuring reliable information delivery.
Data Source
AI summary
An information providing method receives, from a terminal apparatus, terminal position information representative of a position of the terminal apparatus; identifies, from among a plurality of pieces of distribution information stored in a reference table in which correspondences between the plurality pieces of distribution information and a plurality of pieces of sound output position information are registered, a piece of distribution information corresponding to a piece of sound output position information identified based on the position of the terminal apparatus represented by the received terminal position information; and transmitting the identified piece of distribution information to the terminal apparatus. Each of the plurality of pieces of distribution information relates to a position at which a corresponding one of sound output devices outputs sound, and each of the plurality of pieces of sound output position information is representative of a position at which the corresponding sound output device outputs the sound.