公开(公告)号：US11006507B2

公开(公告)日：2021-05-11

申请号：US16414934

申请日：2019-05-17

Applicant: Infineon Technologies AG

Inventor： Hans-Peter Kreuter ,  Maurizio Galvano ,  Andrea Logiudice ,  Franco Mignoli ,  Andrea Scenini

IPC: H05B47/18 ,  H05B45/00 ,  F21V23/00 ,  F21V23/02

Abstract: According to one exemplary embodiment, a light-emitting diode driver is provided, having: a differential first interface, a single-ended second interface, wherein the light-emitting diode driver is configured to use the first interface to communicate according to a bidirectional differential bus communication protocol as a slave, to use the second interface to communicate according to a single-ended bus protocol and to transpose signals between the first interface and the second interface, and to supply one or more light-emitting diodes with electric power on the basis of signals received via the first interface.

公开(公告)号：US20210107397A1

公开(公告)日：2021-04-15

申请号：US16601230

申请日：2019-10-14

Applicant: Infineon Technologies AG

Inventor： Gernot Unterweger ,  Tobias Schuster ,  Andrea Scenini ,  Christof Michenthaler

IPC: B60Q1/14 ,  H05B33/08 ,  H04N9/69

Abstract: A circuit may be configured to control a vehicle headlamp comprising light emitting diodes (LEDs). The circuit may comprise an LED controller configured to receive video data from a video source via a first interface; an LED driver configured to drive the LEDs based at least in part on the video data; and a second interface between the LED controller and the LED driver, wherein the second interface is configured to communicate the video data from the LED controller to the LED driver and wherein the second interface communicates the video data at a slower data rate than the first interface.

公开(公告)号：US10297190B2

公开(公告)日：2019-05-21

申请号：US15499400

申请日：2017-04-27

Applicant: Infineon Technologies AG

Inventor： Andrea Scenini

IPC: G09G3/32 ,  H05B33/08

Abstract: In some examples, a device includes at least two light sources, buffer circuitry configured to receive a bit stream, and driver circuitry configured to receive the bit stream from the buffer circuitry and to drive the at least two light sources based on the bit stream. In some examples, the device further includes monitor circuitry configured to determine a voltage drop across each light source of the at least two light sources and snooping circuitry configured to read an inactive bit of the bit stream. In some examples, the snooping circuitry is further configured to read an active bit of the bit stream after reading the inactive bit and based on a value of the inactive bit and to cause the monitor circuitry to determine a voltage drop across a light source of the at least two light sources based on a value of the active bit.

公开(公告)号：US09930748B1

公开(公告)日：2018-03-27

申请号：US15499228

申请日：2017-04-27

Applicant: Infineon Technologies AG

Inventor： Andrea Scenini

IPC: H05B33/08 ,  H05B37/02 ,  H04N5/70

CPC classification number: H05B33/089 ,  G09G3/006 ,  G09G2320/0295 ,  H05B33/0845 ,  H05B33/0854

Abstract: In some examples, a device includes at least two light sources, buffer circuitry configured to receive a bit stream, and driver circuitry configured to receive the bit stream from the buffer circuitry and to drive the at least two light sources based on the bit stream. In some examples, the device also includes monitor circuitry configured to determine a voltage drop across each light source of the at least two light sources and snooping circuitry configured to read, as the buffer circuitry receives the bit stream, a specific bit of the bit stream and to cause the monitor circuitry to determine a voltage drop across the specific light source based on a value of the specific bit.

公开(公告)号：US09781800B2

公开(公告)日：2017-10-03

申请号：US14719035

申请日：2015-05-21

Applicant: Infineon Technologies AG

Inventor： Andrea Scenini ,  Giovanni Capodivacca ,  Adolfo De Cicco

IPC: H05B33/08

CPC classification number: H05B33/0857 ,  H05B33/0842

Abstract: A device for driving several light sources is provided, wherein the several light sources are arranged in a matrix structure; wherein the several light sources of the matrix structure are connected to a semiconductor device; wherein a portion of the semiconductor device corresponds to a light source of the matrix structure, wherein the portion of the semiconductor device comprises a diagnosis function which when activated is arranged for supplying an output diagnosis signal.

公开(公告)号：US20160345397A1

公开(公告)日：2016-11-24

申请号：US14718956

申请日：2015-05-21

Applicant: Infineon Technologies AG

Inventor： Adolfo De Cicco ,  Andrea Scenini ,  Giovanni Capodivacca

IPC: H05B33/08

CPC classification number: H05B33/0824 ,  H05B33/0842

Abstract: A device for driving several light sources is suggested comprising a shift register comprising at least two cells, wherein an output of each cell controls one of the several light sources; wherein the at least two cells are connected in series and are driven by a clock signal; wherein each cell of the shift register comprises a flip-flop and a register; wherein the output of the flip-flop is connected with the input of the register; wherein the register is arranged to store the output of the register based on an update signal and wherein the output of the register controls one of the light sources; wherein the flip-flops of the at least two cells are filled with a data signal based on the clock signal; and wherein after a predetermined number of cycles of the clock signal the update signal is conveyed to the registers driving the light sources according to the values stored in the flip-flops of the cells.

Abstract translation: 建议一种用于驱动多个光源的装置，其包括至少两个单元的移位寄存器，其中每个单元的输出控制多个光源中的一个; 其中所述至少两个电池串联连接并由时钟信号驱动; 其中移位寄存器的每个单元包括触发器和寄存器; 其中触发器的输出与寄存器的输入端相连; 其中所述寄存器被布置为基于更新信号存储所述寄存器的输出，并且其中所述寄存器的输出控制所述光源中的一个; 其中所述至少两个单元的触发器基于所述时钟信号被填充有数据信号; 并且其中在所述时钟信号的预定数量的周期之后，根据存储在所述单元的触发器中的值，将所述更新信号传送到驱动所述光源的寄存器。