公开(公告)号：US20190137302A1

公开(公告)日：2019-05-09

申请号：US16237938

申请日：2019-01-02

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Vincent ONDE

IPC: G01D5/249 ,  G01D5/347 ,  G01D4/00

Abstract: A rotary element is equipped with a pattern representing a reflected binary code on at least three bits. A detection circuit is configured to sense the pattern and deliver an incident signal encoded in reflected binary code on at least three bits. The incident signal is converted by a transcoding circuit into an intermediate signal encoded in reflected binary code on two bits. A decoding stage decodes the intermediate signal and outputs at least one clock signal representing the amount of rotation of the rotary element and a direction signal representing the direction of rotation. A processing circuit determines the movement of the rotary element, and has at least one general purpose timer designed to receive the at least one clock signal and direction signal.

公开(公告)号：US20180323793A1

公开(公告)日：2018-11-08

申请号：US15946324

申请日：2018-04-05

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Vincent ONDE ,  Jean-Francois LINK

IPC: H03M1/06

Abstract: A programmable digital-to-analog converter includes an analog circuit that converts a binary word into a value of analog voltage and a digital circuit that supplies the binary word starting from a maximum value decremented by a decrement value.

公开(公告)号：US20200225065A1

公开(公告)日：2020-07-16

申请号：US16838337

申请日：2020-04-02

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Vincent ONDE

IPC: G01D5/249 ,  G01D4/00 ,  G01D5/347

Abstract: A rotary element is equipped with a pattern representing a reflected binary code on at least three bits. A detection circuit is configured to sense the pattern and deliver an incident signal encoded in reflected binary code on at least three bits. The incident signal is converted by a transcoding circuit into an intermediate signal encoded in reflected binary code on two bits. A decoding stage decodes the intermediate signal and outputs at least one clock signal representing the amount of rotation of the rotary element and a direction signal representing the direction of rotation. A processing circuit determines the movement of the rotary element, and has at least one general purpose timer designed to receive the at least one clock signal and direction signal.

公开(公告)号：US20180323695A1

公开(公告)日：2018-11-08

申请号：US15949690

申请日：2018-04-10

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Jean-Francois LINK ,  Vincent ONDE

IPC: H02M1/08 ,  H03K4/08

CPC classification number: H02M1/08 ,  H02M2001/0012 ,  H02M2001/0029 ,  H03K3/017 ,  H03K4/08 ,  H03K7/08

Abstract: A control signal is applied to a pulse generating circuit configured to generate pulses that are modulated in width. A circuit provides for slope-compensation of the control signal. The circuit includes a digital-to-analog converter that generates a decreasing sawtooth signal. A triggering circuit operates to trigger steps of the sawtooth signal and resetting the sawtooth signal. The sawtooth signal is reset at a cadence of a frequency of the pulses that are modulated in width.