Bus System Modulating Data and Clock Signals on Power Supply Line
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Solution Overview
Problem
In complex technical systems, the effort involved in wiring bus users increases due to the need for multiple lines for data, clock, and power supply, making existing bus systems cumbersome.
Innovation Solution
A bus system with a single supply bus that transmits both supply voltage and synchronization signals, using transmission units with modulators and demodulators to process data and clock signals on different carrier frequencies, reducing the number of required lines by using a single supply bus for modulated data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple lines (data, clock, power supply) are used for bus communication, then reliable data transmission is achieved, but wiring complexity and number of lines increase
Solution Approach 1:
The patent combines multiple functions (power supply, data transmission, clock signal) into a single bus line. The transmission unit modulates data and clock signals onto the power supply voltage, allowing all signals to be transmitted through one wire instead of separate lines for each function.
Solution Approach 2:
The single bus line serves multiple purposes: it provides power supply voltage, carries data signals, and transmits clock synchronization signals. The transmission unit enables the bus to perform multiple functions simultaneously by modulating different signals onto the same carrier.
2Reliability
If separate lines for data and clock signals are used, then signal processing is reliable, but the number of lines increases
Solution Approach 1:
The patent merges data signal transmission and clock signal transmission onto a single bus line. The transmission unit modulates both data and clock signals onto the power supply carrier, allowing them to be transmitted simultaneously through one wire.
Solution Approach 2:
The patent uses frequency modulation to encode different signals at different carrier frequencies on the same bus line. Data and clock signals are transmitted at different frequencies, allowing the receiving unit to distinguish and separate them through frequency filtering.
3Quantity of substance
If a single supply bus is used for modulated data transmission, then cabling amount is reduced, but signal processing complexity increases
Solution Approach 1:
The transmission unit acts as an intermediary between the bus line and the data/clock signals. It modulates incoming data and clock signals onto the power supply carrier for transmission, and demodulates received signals to extract the original data and clock signals.
Solution Approach 2:
The patent changes the parameter of the power supply voltage by modulating it with data and clock signals. The transmission unit varies the voltage parameters (frequency, amplitude) to encode information, allowing multiple signals to be transmitted through the existing power supply infrastructure.
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
This approach significantly reduces the amount of cabling needed, enabling efficient data and clock signal processing while maintaining bidirectional communication, thus simplifying the wiring complexity in complex systems.
Implementation Method 1
The data are modulated onto a carrier signal in a transmission module of a transmission unit and made available to the supply bus
Implementation Method 2
To receive the data, they are demodulated from a modulated carrier signal present on the supply bus and made available to the corresponding connections of the bus users
Data Source
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AI summary
The invention relates to a bus system for transmitting data between at least one first bus participant configured as a master unit and at least one second bus participant configured as a slave unit, wherein the bus participants each have a connection for a data line, a connection for a clock line, and a connection for a power supply line, wherein the connections of the bus participants are each connected to a common power supply bus via a transmission unit. The transmission unit comprises a transmit module for transmitting the data from the connection of the associated bus participants to the power supply bus and a receive module for transmitting the data from the power supply bus to the connection of the associated bus participants, such that the data can be transmitted between the bus participants as modulated data via the power supply bus.