Bi-Directional Clock Interface for Closed-Loop Phase Synchronization
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Solution Overview
Problem
Phase mismatch between clock signals in data converters limits system performance and requires frequent calibrations in wireless communication systems, as changes in hardware and temperature affect phase synchronization.
Innovation Solution
A system with a clock generator that includes a feedback signal processor and clock generating circuit to adjust the phase of clock signals based on feedback signals from devices, using a bi-directional interface to receive phase information and temperature data, enabling closed-loop phase synchronization across multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If phase synchronization is maintained using fixed clock signals, then system stability is improved, but phase mismatch occurs due to temperature changes and manufacturing variations
Solution Approach 1:
The patent implements dynamic phase adjustment by introducing a feedback mechanism that continuously monitors phase differences and adjusts clock signal phases in real-time. The system transitions from static fixed-phase clock distribution to dynamic adaptive phase control, allowing the system to compensate for temperature drift and manufacturing variations automatically
Solution Approach 2:
The patent employs a feedback-based phase synchronization system where phase information from multiple devices is collected, processed, and used to generate adjustment signals. The feedback loop enables continuous correction of phase mismatches by comparing actual phase states with target phase relationships and applying corrective adjustments
2Measurement precision
If frequent calibrations are performed to maintain phase synchronization, then phase matching accuracy is improved, but system productivity deteriorates due to calibration time loss
Solution Approach 1:
The patent implements preliminary phase calibration during system initialization or setup, establishing baseline phase relationships before normal operation begins. This preliminary action reduces the need for frequent recalibrations during operational phases, as the system maintains synchronization through continuous feedback-based adjustments rather than repeated full calibration cycles
Solution Approach 2:
The patent ensures continuous phase synchronization through real-time feedback and adjustment mechanisms that operate continuously during system operation. This continuous useful action maintains phase accuracy without interrupting system operation for periodic calibrations, thereby preserving productivity while sustaining synchronization precision
3Reliability
If separate unidirectional interfaces are used for clock signal distribution, then signal integrity is improved, but device complexity increases due to additional interface requirements
Solution Approach 1:
The patent implements a bi-directional interface that serves multiple functions: distributing clock signals from the clock generator to devices and collecting phase feedback information from devices back to the generator. This multi-functional interface replaces separate unidirectional interfaces, reducing overall system complexity while maintaining signal integrity through dedicated signal paths
Solution Approach 2:
The patent combines the clock signal distribution function and phase feedback collection function into a single bi-directional interface structure. By merging these functions into one interface mechanism, the system reduces the number of separate interfaces required, simplifying the overall system architecture while preserving the integrity of individual signal paths through proper timing and protocol management
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances synchronization and extends the time between calibrations by dynamically adjusting clock phases, improving phase tracking and reducing errors due to temperature changes and manufacturing variations.
Implementation Method 1
a feedback signal processor configured to receive a feedback signal from the device and provide a phase adjustment signal based on the feedback signal
Data Source
AI summary
Aspects of this disclosure relate to adjusting a phase of a clock signal provided to a device based on a feedback signal from the device. The feedback signal can provide phase information associated with the device and/or other information associated with the device, such as temperature information. A feedback signal processor can compute a phase control signal based on the feedback signal. The phase control signal can be used to adjust the phase of the clock signal. By adjusting the phase of one or more clock signals, several devices, such as data converters, can be synchronized.