Dynamic Delay Line Matching for TDC Linearity and Accuracy

The patent implements dynamic element matching by making the delay line configuration dynamic rather than static. Switching elements are introduced to dynamically select and interchange delay elements based on their actual delay characteristics. This dynamic reconfiguration allows the system to adapt to process and temperature variations, selecting delay elements that maintain the desired timing accuracy despite environmental changes.

The patent employs feedback mechanisms where the actual delay characteristics of delay elements are measured and used to control the switching elements. The system monitors delay variations and dynamically adjusts the selection of delay elements to compensate for process and temperature deviations. This closed-loop feedback ensures that the timing measurement accuracy is maintained by continuously adapting to changing conditions.

The patent transforms the static delay line into a dynamic system where elements can be interchanged. Switching elements are inserted between delay elements to enable dynamic reconfiguration. This allows the system to optimize linearity by selecting combinations of delay elements that minimize delay variations, rather than being constrained by a fixed physical layout.

The patent changes the operational parameters of the delay line by dynamically altering which delay elements are active in the signal path. By controlling the switching elements, the system can change the effective delay characteristics to maintain linearity across different operating conditions, compensating for process and temperature variations without requiring precise fixed positioning.

The patent segments the delay line into multiple interchangeable delay elements that can be independently selected and reconfigured. By dividing the delay line into discrete segments with switching elements between them, the system can dynamically select specific segments to achieve the desired delay while maintaining timing accuracy. This segmentation enables flexibility without requiring complete redesign of the entire delay line.

The patent introduces switching elements as intermediary components between the delay elements. These switching elements act as mediators that enable dynamic reconfiguration without directly modifying the delay elements themselves. The switching elements provide a controlled interface that allows the system to interchange delay elements based on their characteristics, improving timing accuracy while managing circuit complexity through modular control.