Ethernet Data Communication Forced Sleep Control Against False Wake-Ups
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Solution Overview
Problem
Existing data communication systems face issues with mistakenly detecting remaining transmission waveforms as wake-up signals during forced sleep processes in Ethernet connections, leading to unintended transitions between sleep and wake-up states due to signal reflections.
Innovation Solution
Implement a forced sleep process in data communication devices that conform to TC 10 specifications, where the transmission, reception, or wake-up signal detection functions are invalidated for a predetermined time after signal transmission stops, followed by validation of these functions once the reflection has dissipated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the transmission function is immediately validated after the forced sleep process, then the device quickly returns to operational state, but remaining transmission waveforms may be mistakenly detected as wake-up signals causing unintended state transitions
Solution Approach 1:
The patent applies preliminary action by invalidating the transmission function before executing the forced sleep process. This ensures that no new transmission waveforms are generated during the sleep process, preventing mistaken detection of remaining waveforms as wake-up signals. The transmission function is invalidated in advance, then the forced sleep process executes, and only after the sleep process completes does the system validate the transmission function again.
2Reliability
If the transmission function is invalidated before the forced sleep process, then mistaken detection of remaining waveforms is prevented, but the device cannot transmit signals during the sleep process
Solution Approach 1:
The patent segments the communication process into distinct phases: a first period where the transmission function is invalidated and no transmission occurs, followed by a second period after the forced sleep process where the transmission function is validated and communication can resume. This segmentation separates the sleep process from active transmission, ensuring reliable state detection while maintaining communication capability when needed.
Data Source
AI summary
A data communication device is connected to an Ethernet, and includes a transmission and reception unit in which at least one of a data transmission side and a data reception side conforms to a TC 10 specification. The data transmission and reception unit executes a forced sleep process to force the data transmission and reception unit to be in a sleep state after a predetermined time has elapsed since invalidating a transmission function of the data transmission and reception unit. The data transmission and reception unit validates the transmission function of the data transmission and reception unit after completing the forced sleep process.