Low-Voltage Drive Circuit Using Oscillating Bus Loading
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Solution Overview
Problem
Current data communication systems face challenges in efficiently transmitting digital data over low voltage signals with high noise immunity and low power consumption, particularly in environments where data errors are common, such as wireless communications.
Innovation Solution
The implementation of Low Voltage Drive Circuits (LVDCs) that convert digital data into analog signals with oscillating components of low magnitude, allowing for low power and noise-immune data transmission and reception, using multiple frequencies to increase data rates without significant power increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital data is transmitted using conventional voltage levels, then data communication reliability is maintained, but power consumption increases and noise immunity decreases
Solution Approach 1:
The patent changes the voltage parameter from conventional high voltage levels to low voltage levels (e.g., 0.8V to 1.2V), fundamentally altering the operating conditions to achieve both low power consumption and acceptable noise immunity through optimized low-voltage circuit design
Solution Approach 2:
The patent introduces dynamic voltage scaling capabilities where the voltage level can be adjusted based on operational requirements, allowing the system to adapt between different power consumption and performance states to optimize both noise immunity and power efficiency
2Productivity
If data transmission rate is increased, then productivity improves, but signal integrity and noise immunity deteriorate
Solution Approach 1:
The patent employs periodic clocked operations and synchronized data transmission at optimized frequencies, using regular periodic signaling to maintain signal integrity while achieving high effective data rates through efficient use of each transmission cycle
Solution Approach 2:
The patent implements feedback mechanisms including acknowledgment signals and error detection/correction protocols that operate at the low voltage level, allowing the system to maintain high transmission rates while ensuring signal integrity through real-time verification and retransmission when necessary
3Use of energy by moving object
If low voltage signals are used for data transmission, then power consumption decreases, but signal strength and transmission distance are reduced
Solution Approach 1:
The patent merges multiple low-voltage signals in parallel or uses signal aggregation techniques where multiple weak signals are combined to create a stronger effective signal, maintaining low power consumption per signal while achieving sufficient overall signal strength for reliable transmission
Solution Approach 2:
The patent introduces intermediary components such as voltage amplifiers or signal boosters that operate at intermediate voltage levels, allowing low-voltage signals to be transmitted with minimal power consumption while being amplified only when needed for longer transmission distances
4Productivity
If multiple frequencies are used to increase data rates, then productivity improves, but device complexity increases
Solution Approach 1:
The patent segments the data transmission into multiple frequency channels or time slots, dividing the high-data-rate requirement into manageable portions that can be handled by simpler individual circuits operating at different frequencies or times, reducing overall device complexity while maintaining high aggregate data rates
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.