Insulated Chip Communication Timing to Prevent Signal Overlap
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Solution Overview
Problem
Bidirectional insulated transmission between a primary chip and a secondary chip can cause erroneous operations due to interference between switching noise when transmissions overlap.
Innovation Solution
A communication system with separate insulated transmission circuits and a control logic circuit that synchronizes transmission timings to prevent overlapping, using different pulse patterns for each direction and prioritizing signal processing to minimize electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bidirectional insulated transmission is implemented between primary chip and secondary chip, then communication functionality is improved, but switching noise interference causes erroneous operations
Solution Approach 1:
The control logic circuit in the secondary chip generates a transmission start signal in advance based on the received first transmission signal, which then triggers the second transmitter to send the second transmission signal. This preliminary action ensures that the second transmission does not overlap with the first transmission, preventing switching noise interference while maintaining bidirectional communication functionality.
2Reliability
If transmission timing is synchronized to prevent overlap, then noise interference is reduced, but transmission delay increases
Solution Approach 1:
The control logic circuit receives the first transmission signal from the first receiver and uses this feedback to generate the transmission start signal for the second transmitter. This feedback mechanism ensures that the second transmission is timed appropriately after the first transmission is completed, preventing overlap while minimizing unnecessary delays through efficient timing control.
3Reliability
If separate insulated transmission circuits are used for bidirectional transmission, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the first and second insulated transmission circuits into a single integrated communication system where the control logic circuit coordinates both directions of transmission. The insulated element serves both primary chip-to-secondary chip and secondary chip-to-primary chip transmission, reducing the need for completely separate physical circuits while maintaining reliable bidirectional insulated transmission.
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
Prevents noise interference and ensures reliable, efficient bidirectional insulated transmission with reduced delays and system size, maintaining signal integrity and reducing electromagnetic interference.
Implementation Method 1
A communication system that performs insulated transmission between a primary chip and a secondary chip
Data Source
AI summary
A communication system includes: a first insulated transmission circuit including a first transmitter, an insulated transmitter, and a first receiver; and a second insulated transmission circuit including a second transmitter, an insulated transmitter, and a second receiver. The first transmitter converts a first input signal to a first transmission signal. The insulated transmitter performs insulated transmission of the first transmission signal from a primary chip to a secondary chip. The first receiver demodulates the first transmission signal. The second transmitter converts a second input signal to a second transmission signal. The insulated transmitter performs insulated transmission of the second transmission signal from the secondary chip to the primary chip. The second receiver demodulates the second transmission signal. A control logic circuit detects reception of the first transmission signal and transmits a transmission start signal. The second transmitter transmits the second transmission signal on the basis of the transmission start signal.