I2C Data Transmission Chips for Long-Distance Feedback Decoupling
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Solution Overview
Problem
Current I2C data transmission methods for long distances result in low effective transmission rates due to the coupling of transmission frequency with feedback mechanisms, leading to inefficient data packet sizes and prolonged interaction times.
Innovation Solution
Implementing a feedback mechanism where transmission chips return immediate feedback to the master device and store data for subsequent transmission, allowing continuous use of the I2C interface and decoupling long-distance transmission frequency from I2C data rate, enabling larger data packets and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master device waits for feedback information before sending next I2C data, then data transmission reliability is ensured, but the effective transmission rate becomes low
Solution Approach 1:
The patent segments the feedback mechanism by introducing intermediate transmission chips that independently manage feedback for different data segments. Each transmission chip handles feedback for its specific data segment separately, allowing the master device to send multiple data segments without waiting for a single feedback response, thus improving transmission rate while maintaining reliability.
Solution Approach 2:
The transmission chips act as intermediaries between the master device and slave device. These intermediaries buffer and manage feedback information, allowing the master device to continue transmitting data without directly waiting for feedback from the slave device. The intermediary chips decouple the transmission process from the feedback process, enabling higher transmission rates.
2Device complexity
If transmission chips send feedback information back to the master device through the same I2C interface, then device complexity is reduced, but the I2C interface cannot be continuously used for transmission
Solution Approach 1:
The patent segments the feedback path by introducing separate feedback channels for different transmission chips. Each transmission chip has its own dedicated feedback path, allowing feedback to be sent without blocking the main I2C transmission interface. This segmentation enables the I2C interface to be continuously used for data transmission while feedback is handled through separate paths.
Solution Approach 2:
The patent adds a temporal dimension to feedback transmission by allowing feedback to be sent at different times and through different paths. Instead of blocking the I2C interface for feedback, the system uses time-division and spatial-division multiplexing to separate feedback traffic from data traffic, enabling continuous transmission capability.
Data Source
AI summary
A data transmission method according to an I2C protocol and a transmission apparatus includes: a first transmission chip obtains I2C data from a first device, wherein the I2C data is data sent by the first device to a second device. The first transmission chip sends first feedback information to the first device, wherein the first feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip forwards the I2C data to a second transmission chip corresponding to the second device. The first transmission chip receives second feedback information from the second transmission chip, and the second feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip stores the second feedback information in a first storage space that is storage space of the first transmission chip.