Low-Voltage Bus Drive Circuit Using Frequency-Encoded Analog Data
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Solution Overview
Problem
Existing data communication systems face challenges in efficiently transmitting and receiving data with low power consumption and high noise immunity, particularly in environments with significant electromagnetic interference, while maintaining high data rates and reducing trace counts on motherboards.
Innovation Solution
The implementation of Low Voltage Drive Circuits (LVDCs) that convert digital data into analog signals with a low magnitude oscillating component, allowing for low-power, high-noise immunity data transmission and reception, and enable multiple data streams on different frequencies to increase data rates without significantly increasing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital data is transmitted using conventional high-voltage signaling, then data rate and reliability are improved, but power consumption increases and noise immunity deteriorates in high EMI environments
Solution Approach 1:
The patent changes the voltage parameter from conventional high-voltage digital signaling to low-voltage analog signaling with superimposed oscillating components. This parameter transformation enables the system to achieve high noise immunity through differential analog signaling while maintaining low power consumption through reduced voltage swing幅度.
Solution Approach 2:
The patent introduces dynamic oscillating components that are superimposed on the analog signal. These oscillating components at specific frequencies enable dynamic data encoding that improves noise immunity by spreading spectral energy and allows for frequency-selective reception, thereby achieving reliable communication at low power levels.
2Productivity
If multiple data streams are transmitted on different frequencies, then data rate is improved, but device complexity increases
Solution Approach 1:
The patent transitions from single-frequency digital transmission to multi-frequency analog transmission by adding a frequency dimension to the communication channel. Multiple data streams are encoded on different frequency oscillating components superimposed on the analog signal, enabling parallel data transmission that increases data rate while using a unified analog transmission path.
Solution Approach 2:
The patent merges multiple data streams into a single analog transmission channel by superimposing oscillating components at different frequencies onto the same physical medium. This consolidation approach enables multiple data streams to share the same transmission path, increasing productivity while avoiding the complexity of separate dedicated channels for each data stream.
3Use of energy by moving object
If low-voltage analog signaling is used, then power consumption is reduced, but signal strength and transmission distance deteriorate
Solution Approach 1:
The patent employs oscillating components that can be viewed as electrical vibrations at specific frequencies superimposed on the analog signal. These frequency-domain vibrations enable the low-voltage signal to carry multiple data streams with sufficient spectral separation, maintaining signal integrity and effective transmission distance despite reduced voltage amplitude through frequency diversity.
Data Source
AI summary
A low voltage drive circuit includes a transmit digital to analog circuit that converts transmit digital data into analog outbound data by: generating a DC component; generating a first oscillation at a first frequency; generating a second oscillation at the first frequency; and outputting the first oscillation or the second oscillation on a bit-by-bit basis in accordance with the transmit digital data to produce an oscillating component, wherein the DC component is combined with the oscillating component to produce the analog outbound data, and wherein the oscillating component and the DC component are combined to produce the analog outbound data. A drive sense circuit drives an analog transmit signal onto a bus, wherein the analog outbound data is represented within the analog transmit signal as variances in loading of the bus at the first frequency and wherein analog inbound data is represented within an analog receive signal as variances in loading of the bus at a second frequency.