Dual-Receiver Signal Level Detection for High-Speed Pad Communication
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Solution Overview
Problem
As communication signal frequencies increase, electronic devices face higher power consumption and reduced reliability due to increased error probabilities, especially in battery-operated mobile devices like smartphones and smartwatches.
Innovation Solution
Implementing an electronic device with dual receivers and output circuits that use transistors of varying sizes and reference voltages to accurately determine signal levels, reducing power consumption and enhancing reliability through improved margin detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the frequency of communication signals is increased to improve communication speed, then communication speed is improved, but power consumption increases and reliability deteriorates
Solution Approach 1:
The receiver is divided into multiple parallel receivers (first receiver, second receiver, etc.), each comparing the received signal with different reference voltages. This segmentation allows the system to detect multiple signal levels simultaneously, improving reliability at higher frequencies while maintaining lower power consumption by avoiding the need for single high-power receivers to handle all detection tasks.
2Speed
If the frequency of communication signals is increased to improve communication speed, then communication speed is improved, but reliability deteriorates due to increased error probability
Solution Approach 1:
Each receiver is assigned a specific reference voltage and detection range, creating local specialization. The first receiver compares with a first reference voltage, the second receiver compares with a second reference voltage, and so on. This local quality approach allows each receiver to optimize for its specific detection task, improving overall system reliability when detecting multi-level signals at high frequencies.
Solution Approach 2:
The output circuit receives comparison results from multiple receivers and determines the final data value based on these feedback signals. This feedback mechanism allows the system to cross-validate signal levels and detect errors, improving reliability while maintaining high communication speeds.
3Measurement precision
If dual receivers with different transistor sizes are used to improve signal level detection accuracy, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent changes the transistor size parameter in the differential pairs of different receivers. By using transistors of different sizes in different receivers, the system can detect different signal levels more accurately. This parameter change approach improves measurement precision while keeping the circuit structure relatively simple and scalable.
Data Source
AI summary
An electronic device is described which includes a transmitter, a first receiver, a second receiver, and an output circuit. The transmitter transmits a transmission signal to an external electronic device through a pad. The first receiver and the second receiver both receive a reception signal from the external electronic device through the pad. The output circuit determines whether data received through the reception signal belong to a high level, a middle level or a low level, based on an output of the first receiver and an output of the second receiver.