Signal Receiving Device with Multi-Sampler Voting Circuit
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Solution Overview
Problem
Existing signal receiving devices face challenges in achieving high-speed Eye Open Monitor (EOM) operations and reliable signal reception, particularly in varying environmental conditions such as those encountered in autonomous vehicles, where consistent and reliable signal transmission and reception are critical.
Innovation Solution
A signal receiving device is designed with multiple sampling devices and processing stages, including clock recovery circuits and samplers that apply offset conditions to extract sampling values, and an output circuit that performs majority voting and error counting to enhance EOM operations and data reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional single-sampler EOM operation is used, then device complexity is low, but EOM operation speed and reliability are insufficient
Solution Approach 1:
The patent divides the sampling function into multiple independent samplers (first sampler, second sampler, third sampler), each operating under different offset conditions. This segmentation allows parallel EOM measurements to be performed simultaneously, increasing productivity while keeping each individual sampler relatively simple.
Solution Approach 2:
Each sampler is configured with specific local characteristics (different horizontal and vertical offsets) to perform specialized sampling functions. The first sampler uses reference conditions, while the second and third samplers use different offset conditions, allowing each to optimize for specific measurement aspects.
2Reliability
If majority voting is performed on multiple sampling values, then signal reception reliability is improved, but processing time increases
Solution Approach 1:
The patent performs preliminary sampling under multiple different offset conditions simultaneously before the majority voting is needed. By preparing multiple sampling values in advance through parallel sampling operations, the actual voting process can be performed more quickly without compromising reliability.
Solution Approach 2:
The system continuously performs sampling operations under different offset conditions in parallel, ensuring that multiple sampling values are always available for voting. This continuous preparation eliminates idle time and maintains steady progress toward reliable signal reception.
3Measurement precision
If multiple offset conditions are applied for sampling, then EOM measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the measurement function by creating separate sampling paths for different offset conditions. Each sampler handles a specific offset configuration, allowing accurate EOM measurements under various conditions while maintaining clear separation of functions to manage complexity.
Solution Approach 2:
The patent implements a universal sampling framework where multiple samplers can operate under different offset conditions using the same basic sampling architecture. This multi-functional approach enables accurate measurements across various conditions without requiring entirely different hardware for each measurement type.
Data Source
AI summary
A signal receiving device includes a sampling device configured to sample an input signal to output a plurality of sampling values, and an output circuit configured to output data based on the sampling values. The output circuit outputs the data by performing majority voting based on first to third sampling values of the sampling values in response to a first control signal, and outputs the data and first and second error count signals based on the first sampling value and fourth and fifth sampling values of the sampling values in response to a second control signal. The first error count signal is generated by comparing the first sampling value sampled under a reference condition with the fourth sampling value sampled under a first offset condition, and the second error count signal is generated by comparing the first sampling value with the fifth sampling value sampled under a second offset condition.