Adaptive Data Receiving Circuit for Intersymbol Interference
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Solution Overview
Problem
Current data receiving circuits face challenges in maintaining signal quality due to channel loss and intersymbol interference, which affects the accuracy of signal output and requires improved receiving performance and reduced power consumption.
Innovation Solution
A data receiving circuit design that includes a first and second amplification circuit, a decision equalization enable circuit, and a latch circuit, which selectively receives and amplifies signal pairs based on control signals derived from feedback signals to minimize intersymbol interference and optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a CTLE or DFE equalization circuit is used to compensate channel loss, then the signal quality is improved, but the power consumption increases and receiving performance needs further improvement
Solution Approach 1:
The patent implements dynamic switching between two amplification circuits with different reference signal level values. The switching is controlled based on the received signal characteristics, allowing the system to adaptively select the optimal amplification mode. This dynamic adjustment optimizes the balance between signal quality and power consumption by activating only one amplification circuit at a time rather than continuously operating both.
Solution Approach 2:
The patent changes the reference signal level value parameter by providing two different reference signals (first reference signal and second reference signal) with different level values. This parameter variation allows the amplification circuit to handle different signal conditions optimally, improving receiving performance while managing power consumption through selective activation.
2Reliability
If a CTLE or DFE equalization circuit is used to compensate channel loss, then the signal quality is improved, but the receiving performance needs further improvement
Solution Approach 1:
The patent implements dynamic switching between two amplification circuits with different reference signal level values. The switching is controlled based on the received signal characteristics, allowing the system to adaptively select the optimal amplification mode. This dynamic adjustment optimizes the balance between signal quality and power consumption by activating only one amplification circuit at a time rather than continuously operating both.
Solution Approach 2:
The patent changes the reference signal level value parameter by providing two different reference signals (first reference signal and second reference signal) with different level values. This parameter variation allows the amplification circuit to handle different signal conditions optimally, improving receiving performance while managing power consumption through selective activation.
3Measurement precision
If conventional equalization circuit is used, then channel loss is compensated, but the accuracy and power consumption need optimization
Solution Approach 1:
The patent implements dynamic switching between two amplification circuits with different reference signal level values. The switching is controlled based on the received signal characteristics, allowing the system to adaptively select the optimal amplification mode. This dynamic adjustment optimizes the balance between signal quality and power consumption by activating only one amplification circuit at a time rather than continuously operating both.
Solution Approach 2:
The patent extracts and utilizes the feedback signal from previously received data to control the switching between amplification circuits. By taking out the useful information from feedback signals, the system determines the appropriate reference signal level value to use, thereby optimizing both accuracy and power consumption without requiring additional complex circuitry.
Data Source
AI summary
A data receiving circuit, data receiving system and storage apparatus are provided. The data receiving circuit includes: a first amplification circuit configured to receive a data signal, first and second reference signals, perform first comparison on the data signal and first reference signal to output a first signal pair and perform second comparison on the data signal and second reference signal to output a second signal pair; a decision equalization enable circuit configured to receive an enable signal and feedback signal and output a control signal where the enable signal has a first level value period, a level value of the control signal varies with that of the feedback signal; and a second amplification circuit configured to receive the first or second signal pair based on the control signal and output first and second output signals.