Invention Grant
- Patent Title: Time measurement circuit, system having a PWM signal generator circuit and a time measurement circuit, and corresponding integrated circuit
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Application No.: US17078945Application Date: 2020-10-23
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Publication No.: US11095291B2Publication Date: 2021-08-17
- Inventor: Domenico Tripodi
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed Intellectual Property Law Group LLP
- Priority: IT102019000019914 20191029
- Main IPC: H03L7/081
- IPC: H03L7/081 ; G06F1/08 ; H03L7/24 ; H03K7/08

Abstract:
A time measurement includes a multiphase clock generator and a phase sampling circuit. The multiphase clock generator generates a sequence of a given number n of phase shifted clock phases, wherein one of the phase shifted clock phases represents a reference clock signal. The phase sampling circuit is configured to generate a phase value indicative of a number of fractions 1/n of the clock period of the clock phases elapsed between an edge of the reference clock signal and an instant when an asynchronous event signal is set. The phase sampling circuit includes first through fourth sub-circuits, which respectively generate or determine first through fourth control signals.
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