Infrared Transmitter Interference Detection for Collision Avoidance
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Solution Overview
Problem
Conventional infrared communication methods cannot detect errors or signal collisions in real-time during transmission or reception, leading to potential data loss and increased transmission time.
Innovation Solution
An electronic device equipped with an IR transmitter and receiver, utilizing a processor to identify specific time intervals for IR signal transmission and reception, and checking for interference light intensity to prevent errors and collisions by stopping and retransmitting or re-receiving signals as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional error checking methods are used where the receiver checks for errors after receiving the signal, then the receiver can detect errors in received signals, but the transmitter cannot check for errors in transmitted signals and cannot detect signal collisions in real-time
Solution Approach 1:
The patent applies preliminary action by enabling the transmitter to perform error detection and collision detection before completing the transmission process. The transmitter detects interference light during the transmission interval and can identify errors or collisions in real-time, allowing it to stop transmission immediately when errors are detected, rather than waiting for the receiver to check after reception.
Solution Approach 2:
The patent implements feedback by having the transmitter continuously monitor for interference light during the transmission interval. This real-time feedback mechanism allows the transmitter to detect errors and collisions as they occur, create notification signals, and retransmit data packets when necessary, improving both reliability and reducing overall transmission time through immediate error handling.
2Reliability
If the transmitter continuously monitors for interference during transmission, then real-time error detection is achieved, but the device complexity increases
Solution Approach 1:
The patent applies universality by making the transmitter perform multiple functions: it not only transmits infrared light signals but also detects interference light during the transmission interval. The same transmitter device serves as both the signal source and the error detection sensor, eliminating the need for separate detection equipment and reducing overall system complexity.
Solution Approach 2:
The transmitter performs self-diagnosis by monitoring its own transmission environment for interference light. It independently detects errors and collisions, creates notification signals, and manages retransmission without requiring external assistance or complex additional hardware, making the system self-sufficient and simpler in structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time error detection and prevention of signal collisions, thereby reducing transmission time and ensuring reliable IR communication.
Implementation Method 1
an IR transmitter configured to output IR light
Implementation Method 2
an IR receiver configured to receive IR light
Data Source
AI summary
Provided are various embodiments related to an electronic device. According to an embodiment, an electronic device may comprise: an IR (infrared light) transmission unit for outputting IR light; an IR reception unit for receiving IR light; and processor. The processor is configured to: identify a first IR transmission signal to be transmitted to an external device; identify a first time interval and a second time interval, which correspond to the first IR transmission signal; output first IR light corresponding to at least a part of the first IR transmission signal through the IR transmission unit in the first time interval; identify whether second IR light having the intensity larger than or equal to a threshold is received by the IR reception unit in the second time interval; and when the second IR light having the intensity larger than or equal to the threshold is received by the IR reception unit in the second time interval, interrupt transmission of the IR transmission signal. In addition, other embodiments may be possible.