公开(公告)号：US12242858B2

公开(公告)日：2025-03-04

申请号：US17785563

申请日：2020-12-15

Applicant: ams AG

Inventor： Michael Böhm

IPC: G06F9/4401 ,  G06F9/448 ,  G06F11/30 ,  G06F15/78

Abstract: A method for starting a system-on-a-chip, SoC, without read only memory, ROM, comprises the steps of receiving, by a processor comprised by the SoC, a reset signal, monitoring, by a monitoring component comprised by the SoC, a connection between the processor and at least a non-volatile memory, both comprised by the SoC, upon occurrence of a first read access of the processor to the non-volatile memory via the connection checking, by the monitoring component, whether a data value returned in response to the first read access via the connection conforms to a pre-set value, and if the returned data value differs from the pre-set value, stopping, by the monitoring component, operation of the processor.

公开(公告)号：US09148914B2

公开(公告)日：2015-09-29

申请号：US13874351

申请日：2013-04-30

Applicant: ams AG

Inventor： Michael Böhm ,  Peter Trattler ,  Mario Manninger

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0809 ,  H05B33/0815 ,  H05B33/0827 ,  Y02B20/347

Abstract: In one embodiment a current source comprises an input (In) for receiving a brightness signal (Sb), and an output (Out) for providing a driving current (Id) for at least one light-emitting diode, LED, wherein the current source (CS) is configured to extract a first and a second current value (idac_high, idac_low) from the brightness signal (Sb), to derive a duty cycle value (Smod) from the brightness signal (Sb) and to modulate the driving current (Id) as a function of the duty cycle value (Smod) in a pulse-width modulation comprising the first and the second current values (idac_high, idac_low). Furthermore, a method for providing a current is described.

Abstract translation: 在一个实施例中，电流源包括用于接收亮度信号（Sb）的输入（In）和用于为至少一个发光二极管LED提供驱动电流（Id）的输出（Out），其中电流源 （CS）被配置为从亮度信号（Sb）提取第一和第二电流值（idac_high，idac_low），以从亮度信号（Sb）导出占空比值（Smod），并且调制驱动电流 Id）作为包括第一和第二电流值（idac_high，idac_low）的脉冲宽度调制中的占空比值（Smod）的函数。 此外，描述了提供电流的方法。