Pulse-Edge Data Transmission Circuit Without ADC or DAC
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Solution Overview
Problem
Existing digital data modulation methods such as NRZ and PAM require analog-to-digital converters (ADC) and digital-to-analog converters (DAC) with high power consumption, which is inefficient and costly.
Innovation Solution
A data transmission and reception circuit system that uses the edge of a pulse signal to modulate and demodulate data by time levels, eliminating the need for ADC and DAC, and achieving high-resolution data encoding and decoding even at low operating voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If NRZ or PAM modulation methods are used, then data transmission can be achieved, but high power consumption is required due to ADC and DAC
Solution Approach 1:
The patent extracts and removes the ADC and DAC components from the data transmission system. By using pulse edge timing information directly to represent data without requiring amplitude conversion, the system eliminates the power-consuming ADC and DAC while maintaining data transmission capability through time-level encoding
Solution Approach 2:
The patent changes the modulation parameter from amplitude (voltage level) to time (edge timing). Instead of varying pulse amplitude as in NRZ/PAM, the system varies the timing of pulse edges relative to a clock signal, transforming the fundamental parameter used for data encoding and thereby eliminating the need for analog conversion components
2Measurement precision
If ADC and DAC are used for modulation and demodulation, then data encoding can be achieved, but high power consumption occurs
Solution Approach 1:
The patent removes ADC and DAC from the system by using time-level encoding where data is represented by the timing of pulse edges relative to a clock signal. This extraction eliminates the power-consuming analog-to-digital and digital-to-analog conversion processes while preserving encoding capability through temporal positioning information
Solution Approach 2:
The patent substitutes the mechanical/electrical analog conversion process with a temporal timing mechanism. Instead of using ADC/DAC to convert between analog and digital domains, the system uses the timing relationship between pulse edges and clock signals to directly represent digital data, replacing the conversion mechanism with a timing-based encoding scheme
3Device complexity
If amplitude-based modulation is used, then data transmission is possible, but complex analog-to-digital conversion is required
Solution Approach 1:
The patent extracts and eliminates the complex ADC and DAC circuits from the data transmission system. By using the timing of pulse edges relative to a clock signal to directly represent data, the system removes the need for analog-to-digital and digital-to-analog conversion circuits, thereby reducing device complexity while maintaining data transmission efficiency
Solution Approach 2:
The patent changes the fundamental modulation parameter from amplitude to time. Instead of encoding data in voltage levels as in traditional amplitude-based modulation, the system encodes data in the temporal position of pulse edges relative to a clock signal, simplifying the circuit architecture by eliminating analog conversion requirements
Data Source
AI summary
Provided are a data transmission circuit system and a data reception circuit system, which use an edge of a pulse signal. The data transmission circuit system modulates a digital signal by using time levels determined by time differences between rising edges (or falling edges) of a clock pulse signal and rising edges (or falling edges) of a data pulse signal. The data reception circuit system demodulates a digital signal by using time levels determined by time differences between rising edges (or falling edges) of a recovered clock pulse signal and rising edges (or falling edges) of a data pulse signal.