Infrared Communication Using Level Duration Encoding
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Solution Overview
Problem
Current infrared communication methods face challenges in bidirectional information interaction due to the inability to distinguish bidirectional infrared signals, leading to unidirectional communication protocols and increased electronic costs.
Innovation Solution
The proposed method involves encoding infrared signals based on level duration, allowing for bidirectional communication by transmitting a first infrared signal and a third signal only after receiving a response within a specific duration, and using a master-slave response mode to avoid interference, reducing hardware costs by eliminating the need for high-frequency carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high frequency carrier and general infrared protocol are incorporated to solve interference, then anti-interference capability is improved, but electronic cost increases
Solution Approach 1:
The patent changes the encoding parameter from frequency-based to time-based by using level duration (high level duration and low level duration) to represent binary data. This eliminates the need for high frequency carriers while maintaining reliable communication through temporal encoding schemes.
2Reliability
If unidirectional protocol is used to avoid bidirectional signal interference, then signal distinction is improved, but information interaction capability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the receiving terminal sends acknowledgment signals back to the transmitting terminal. The transmitting terminal waits for a response within a predetermined time window, enabling bidirectional communication while maintaining signal distinction through sequential transmission and response protocols.
3Productivity
If bidirectional infrared signals are transmitted simultaneously, then communication efficiency is improved, but signal distinction capability deteriorates
Solution Approach 1:
The patent uses periodic action by implementing sequential transmission where one terminal transmits at a time. The system alternates between transmission phases and reception phases with predetermined time windows, allowing bidirectional communication while preventing simultaneous signal interference through time-division multiplexing.
Data Source
AI summary
The present disclosure provides an infrared communication method and apparatus, a storage medium, and an electronic apparatus. The method includes: transmitting a first infrared signal to a target communication terminal, where the first infrared signal is an infrared signal encoded based on a level duration; and in a case that a second infrared signal replied by the target communication terminal based on the first infrared signal is received within a first target duration, transmitting a third infrared signal to the target communication terminal. By using the above technical solution, a problem that bidirectional information interaction cannot be performed due to the inability of distinguishing bidirectional infrared signals in the infrared communication method in the related art is solved.