公开(公告)号：EP4276582A1

公开(公告)日：2023-11-15

申请号：EP23170634.2

申请日：2023-04-28

Applicant: STMicroelectronics S.r.l.

Inventor： MARCHESE, Carmela ,  BASSOLI, Rossella

IPC: G06F1/26 ,  G06F1/3228 ,  G06F1/3234 ,  G06F1/3296

Abstract: A method and system for performing dynamic current scaling of an input current of a voltage regulator. The system comprises a regulator configured to receive an input current and provide a regulated voltage, and a controller configured to: receive a threshold for an activity duration; determine a first activity duration in a first output data rate period of a plurality of output data rate periods; compare the first activity duration with the threshold for the activity duration; in response to determining that the first activity duration exceeds the threshold, refrain from performing dynamic current scaling on the input current in the first output data rate period; and in response to determining that the first activity duration does not exceed the threshold, cause the dynamic current scaling to be performed on the input current in the first output data rate period. The method and system allow tuning current consumption in various applications, calculating a duration of an activity phase in which various algorithms are executed and activating dynamic current scaling of a regulator if the activity duration is shorter than a programmable threshold.

公开(公告)号：EP3139128B1

公开(公告)日：2019-05-01

申请号：EP16161413.6

申请日：2016-03-21

Applicant: STMicroelectronics S.r.l.

Inventor： BASSOLI, Rossella ,  CRIPPA, Carlo

IPC: G01C17/38 ,  G01R33/00 ,  G01R35/00

公开(公告)号：EP3139128A1

公开(公告)日：2017-03-08

申请号：EP16161413.6

申请日：2016-03-21

Applicant: STMicroelectronics S.r.l.

Inventor： BASSOLI, Rossella ,  CRIPPA, Carlo

IPC: G01C17/38 ,  G01R33/00 ,  G01R35/00

CPC classification number: G01R33/0035 ,  G01C17/38 ,  G01R35/00

Abstract: Calibrated sensing signal components ( X cal , Y ca / , Z cal ) represented in a three-dimensional coordinate system (X, Y, Z) by a spherical graph (S) centered at the origin (O) the three-dimensional coordinate system (X, Y, Z) are generated from uncalibrated signal components ( X unc , Y unc , Z unc ) from a magnetic field sensing device, e.g. a magnetometer (M), represented in the three-dimensional coordinate system (X, Y, Z) by an ellipsoidal graph (E) having a center (CE) offset with respect to the origin (O). Kalman filter processing (104) is applied to the sensing signal components yielding a set of parameters (X(8:0)) fitting the ellipsoidal graph (E) by prediction and correction based on prediction. The set of parameters (X(8:0)) fitting the ellipsoidal graph (E) as obtained from Kalman filter processing (104) are processed by:
- a) translating the center (CE) of the ellipsoidal graph (E) towards the origin (O) of the three-dimensional coordinate system (X, Y, Z),
- b) rotating the ellipsoidal graph (E) to align the axes thereof with the sensing device (M) axes,
- c) scaling the ellipsoidal graph (E) to a sphere (S), and
- d) back-rotating the sphere (S) resulting from scaling to the orientation of the ellipsoidal graph (E) before rotation.

Abstract translation: 通过以原点（O）为中心的球面图（S）在三维坐标系（X，Y，Z）中表示的校准的感测信号分量（X cal，Y ca /​​，Z cal） （X，Y，Z）由未校准的信号分量（X unc，Y unc，Z unc））从磁场感测装置产生，例如 通过具有相对于原点（O）偏移的中心（CE）的椭圆图（E）在三维坐标系（X，Y，Z）中表示的磁力计（M）。 通过基于预测的预测和校正，将卡尔曼滤波处理（104）应用于产生拟合椭圆图（E）的一组参数（X（8：0））的感测信号分量。 从卡尔曼滤波处理（104）获得的拟合椭圆图（E）的参数集合（X（8：0））通过以下步骤来处理：a）将椭圆图（E）的中心（CE） 三维坐标系（X，Y，Z）的原点（O）， - b）旋转椭圆图（E）以使其轴与感测装置（M）轴对齐，c）缩放椭圆图 （E）到球体（S），以及 - d）在旋转之前将由缩放产生的球体（S）反向旋转到椭圆图（E）的取向。

公开(公告)号：EP4084419A1

公开(公告)日：2022-11-02

申请号：EP22168201.6

申请日：2022-04-13

Applicant: STMicroelectronics S.r.l.

Inventor： RIZZO PIAZZA RONCORONI, Alessandra Maria ,  QUARTIROLI, Matteo ,  BASSOLI, Rossella ,  BALDRIGHI, Paola

IPC: H04L12/403

Abstract: The present disclosure is directed to a device (10) and method for generating and transmitting a TDM signal including both raw data and processed data. The device includes a sensor (18) having a time division multiplexing (TDM) interface (24). The TDM interface (24) transmits both raw data and processed data in a single TDM signal by reserving one or more slots inside a TDM frame for transmission of the processed data. The sensor (18) also embeds additional information inside a data stream of raw data by repurposing one or more of values of the raw data as an exception code, flag, or another type of notification. The device (10) is also enabled to transmit data, and disabled when not in use in order to conserve power.