3D TOF Range Measurement Device Offset Charge Transfer Timing

The patent applies preliminary action by setting different on-periods for the first and second charge-transfer gates before the switching operation. The first charge-transfer gate is configured with a longer on-period than the second charge-transfer gate, which ensures that charges are transferred through the appropriate gate with sufficient time margin, eliminating the uncertainty in charge transfer direction that occurs with simultaneous switching.

The patent applies dynamics by making the on-periods of the charge-transfer gates variable rather than fixed. The first charge-transfer gate has a longer on-period than the second charge-transfer gate, and these durations can be dynamically adjusted based on the cycle time requirements. This dynamic configuration allows the device to achieve high frame rates while maintaining sufficient time margins for accurate voltage-switching operations.

The patent applies local quality by assigning different on-period durations to different charge-transfer gates based on their specific functional requirements. The first charge-transfer gate, which handles a specific charge transfer path, is given a longer on-period to ensure reliable transfer, while the second charge-transfer gate has a shorter on-period optimized for its different operational characteristics. This localized optimization ensures that each gate operates with the minimum necessary time margin, reducing overall cycle time while maintaining manufacturing precision.