Time-to-digital converter and signal alignment method using the same
AssigneeHyundai Mobis Co., Ltd.
InventorJung Dae Oh
Life of this patent
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Abstract
A TDC (Time-To-Digital Converter) includes: a DLL (Delay Locked Loop) to delay a stop signal applied from an external element and to output a multi-phase signal; a synchronizer to synchronize the stop signal with a clock signal by using the multi-phase signal, and to output a synchronized stop signal; a counter to output a counter value by using the synchronized stop signal applied from the synchronizer; and a time information calculator to calculate time information of the stop signal based on the counter value and the multi-phase signal.
Claims16
A time-to-digital converter comprising:
- a DLL (Delay Locked Loop) configured to delay a stop signal applied from an external element, and to output a multi-phase signal;
- a synchronizer configured to synchronize the stop signal with a clock signal by using the multi-phase signal, and to output a synchronized stop signal;
- a counter configured to output a counter value by using the synchronized stop signal applied from the synchronizer;
- and
- a time information calculator configured to calculate time information of the stop signal based on the counter value and the multi-phase signal.
A signal alignment method performed by a time-to-digital converter, comprising:
- delaying a stop signal applied from an external element, and outputting a multi-phase signal;
- synchronizing the stop signal with a clock signal by using the multi-phase signal, and outputting a synchronized stop signal;
- outputting a counter value by using the synchronized stop signal;
- and
- calculating time information of the stop signal based on the counter value and the multi-phase signal.
A LiDAR signal processing device comprising:
- a sensor unit configured to generate a stop signal by amplifying an electrical signal generated through light reflected from a target object;
- a time-to-digital converter configured to synchronize the stop signal;
- and
- an MCU (Micro Control Unit) configured to control a system, and to calculate distance information by using the stop signal,
- wherein the time-to-digital converter comprises:
- a DLL (Delay Locked Loop) configured to delay the stop signal applied from an external element, and to output a multi-phase signal;
- a synchronizer configured to synchronize the stop signal with a clock signal by using the multi-phase signal, and to output a synchronized stop signal;
- a counter configured to output a counter value by using the synchronized stop signal applied from the synchronizer;
- and
- a time information calculator configured to calculate time information of the stop signal based on the counter value and the multi-phase signal.
Dependencies are inferred from the claim text.