Offset Sampling Circuit for Noise-Resistant Signal Detection
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Solution Overview
Problem
Conventional signal detection circuits in high-speed signal transmission systems are unable to accurately distinguish between real signals and noise, leading to potential missed data transmission due to power consumption issues and complexity in maintaining both accuracy and simplicity.
Innovation Solution
A detecting circuit comprising a first offset generating circuit and a first sampling circuit, which applies an offset to an input signal pair to generate a sampling signal, utilizing a clock signal to identify data signals and prevent noise activation, with an extension circuit to stabilize the detection signal for precise awakening of the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional signal detection circuits are used in high-speed signal transmission systems, then the receiver can be awakened from sleep mode, but the circuits cannot accurately distinguish between real signals and noise, leading to false awakenings or missed detections
Solution Approach 1:
The detection circuit is segmented into multiple independent functional modules: an offset generating circuit that applies differential offsets to input signals, and a sampling circuit that captures signal characteristics at specific moments. This segmentation allows each module to perform its specialized function efficiently, improving overall detection accuracy while maintaining system reliability
Solution Approach 2:
The offset generating circuit performs preliminary action by pre-applying differential offsets to the input signal pair before sampling. This preliminary processing enhances the distinguishability between real signals and noise by creating a voltage difference that makes noise less likely to trigger false detections, thereby improving both measurement precision and reliability
2Measurement precision
If complex signal detection circuits using analog peak-bottom holders are developed to improve detection accuracy, then the ability to distinguish real signals from noise improves, but power consumption increases significantly
Solution Approach 1:
The invention extracts and eliminates the power-consuming analog peak-bottom holder components from the detection circuit. By removing these complex analog elements and replacing them with a simpler offset generating circuit and sampling circuit, the design achieves comparable or superior detection accuracy while dramatically reducing power consumption
Solution Approach 2:
The sampling circuit uses simple digital sampling operations instead of complex analog holding circuits. These digital sampling operations consume minimal power while achieving the necessary signal characterization, effectively replacing expensive and power-hungry analog components with inexpensive, low-power digital alternatives
3Use of energy by moving object
If the receiver enters sleep mode to reduce power consumption, then energy efficiency improves, but the receiver may miss incoming signals if not awakened promptly
Solution Approach 1:
The sampling circuit operates periodically at strategically chosen moments to capture signal characteristics. This periodic sampling approach allows the receiver to remain in low-power sleep mode between sampling intervals while still detecting incoming signals promptly, balancing power consumption with timely wake-up capability
Solution Approach 2:
The invention replaces continuous analog monitoring (which consumes constant power) with discrete digital sampling operations. This substitution allows the detection circuit to operate in a stop-and-go manner, enabling the receiver to sleep between sampling events and wake up only when necessary, thereby reducing power consumption without increasing detection delay
4Productivity
If the input signal frequency is increased to enhance data transmission rate, then productivity improves, but conventional detection circuits become too slow to accurately detect signals and distinguish them from noise
Solution Approach 1:
The sampling circuit is designed with dynamic timing that adapts to high-frequency input signals. By synchronizing sampling moments with the periodic nature of differential signals even at high frequencies, the circuit maintains accurate detection capability while keeping the overall detection mechanism simple and fast-response
Solution Approach 2:
The offset generating circuit dynamically adjusts the differential offset parameters based on signal characteristics. By changing the offset magnitude and timing parameters, the circuit remains effective across a wide range of signal frequencies, enabling accurate detection of high-speed signals without requiring complex frequency-specific detection mechanisms
Data Source
AI summary
A detecting circuit includes: a first offset generating circuit, arranged to apply a first offset to an input signal pair and accordingly generate a first output signal pair; and a first sampling circuit, coupled to the first offset generating circuit, the first sampling circuit arranged to sample the first output signal pair to generate a first sampling signal, wherein the first sampling signal is utilized to identify a data signal on the input signal pair, and the first sampling circuit is controlled by a first signal that is irrelevant to the input signal pair.