公开(公告)号：US11324087B1

公开(公告)日：2022-05-03

申请号：US17132255

申请日：2020-12-23

Applicant: Infineon Technologies AG

Inventor： Hans-Peter Kreuter ,  Christof Michenthaler ,  Franco Mignoli ,  Salvatore Sanna ,  Alfonso Nasciuti ,  Andrea Scenini

IPC: H05B45/30 ,  H05B47/18 ,  H05B45/14 ,  H05B45/54 ,  G05B19/042

Abstract: A method for driving a set of light emitting diodes (LEDs) may include receiving a write access frame by a driver via a bus configured for connection with a controller and the driver. The write access frame includes brightness information. The method may further include controlling, by the driver, the set of LEDs based on the brightness information and determining, by the driver, safety information while controlling the set of LEDs based on the brightness information. The method may further include outputting, by the driver and at the bus, the safety information to acknowledge receipt of the write access frame.

公开(公告)号：US10206252B2

公开(公告)日：2019-02-12

申请号：US15260055

申请日：2016-09-08

Applicant: Infineon Technologies AG

Inventor： Maurizio Galvano ,  Adolfo De Cicco ,  Andrea Scenini

IPC: H05B33/08 ,  H05B37/02 ,  G09G3/20

Abstract: According to an example, a device is provided for driving several light sources, wherein the device is arranged to sense a supply signal and apply a phase shift to a switching signal of at least one of the several light sources based on the sensed supply signal. Also, accordingly a method, a lighting device, a computer program product and a computer-readable medium are suggested.

公开(公告)号：US09974130B2

公开(公告)日：2018-05-15

申请号：US14718956

申请日：2015-05-21

Applicant: Infineon Technologies AG

Inventor： Adolfo De Cicco ,  Andrea Scenini ,  Giovanni Capodivacca

IPC: H05B37/02 ,  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.

公开(公告)号：US20170367160A1

公开(公告)日：2017-12-21

申请号：US15691526

申请日：2017-08-30

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：US20160345392A1

公开(公告)日：2016-11-24

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.

Abstract translation: 提供一种用于驱动多个光源的装置，其中几个光源被布置成矩阵结构; 其中所述矩阵结构的多个光源连接到半导体器件; 其中所述半导体器件的一部分对应于所述矩阵结构的光源，其中所述半导体器件的所述部分包括诊断功能，当所述半导体器件的激活被布置用于提供输出诊断信号时。

公开(公告)号：US11711873B1

公开(公告)日：2023-07-25

申请号：US17654372

申请日：2022-03-10

Applicant: Infineon Technologies AG

Inventor： Floriano Montemurro ,  Alfonso Nasciuti ,  Andrea Scenini

IPC: H05B45/30 ,  H05B45/31 ,  H05B45/325

CPC classification number: H05B45/325 ,  H05B45/31

Abstract: Driver circuits are described for driving one or more light emitting diodes. A driver circuit may comprise an interface configured to receive control signals from a processor and a signal generator configured to generate pulse modulation (PM) signals based on the control signals, wherein the PM signals define phase shifts. In some examples, the signal generator is configured to: determine whether the control signals indicate a phase shift change; and in response to determining that the control signals indicate a phase shift change, terminate a current PM signal at a beginning of a PM period, and generate a new PM signal in the PM period, wherein the new PM signal includes the phase shift change. In other examples, termination may be avoided in some situations, for example, upon determining that a new phase shift is not sufficiently less than a previous phase shift.

公开(公告)号：US20220330400A1

公开(公告)日：2022-10-13

申请号：US17228299

申请日：2021-04-12

Applicant: Infineon Technologies AG

Inventor： Gernot Unterweger ,  Mathias Sedner ,  Andrea Scenini ,  Hans-Peter Kreuter

IPC: H05B45/30 ,  B60Q3/80 ,  B60Q1/14 ,  H05B47/125

Abstract: A control circuit may be configured to control light emitting diode (LED) driver circuits. The control circuit may be configured to generate a multicast of pixel intensity values based on data in memory or data received from a data source, and output the multicast on an interface, which may comprise a one-wire uni-directional interface. In some examples, a plurality of drivers may receive the multicast, and each of the plurality of drivers may drive different sets of LEDs based on the multicast.

公开(公告)号：US20190353336A1

公开(公告)日：2019-11-21

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: F21V23/00 ,  F21V23/02 ,  H05B33/08

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：US10165634B2

公开(公告)日：2018-12-25

申请号：US15260055

申请日：2016-09-08

Applicant: Infineon Technologies AG

Inventor： Maurizio Galvano ,  Adolfo De Cicco ,  Andrea Scenini

IPC: H05B33/08 ,  H05B37/02 ,  G09G3/20

Abstract: According to an example, a device is provided for driving several light sources, wherein the device is arranged to sense a supply signal and apply a phase shift to a switching signal of at least one of the several light sources based on the sensed supply signal. Also, accordingly a method, a lighting device, a computer program product and a computer-readable medium are suggested.

公开(公告)号：US12120788B2

公开(公告)日：2024-10-15

申请号：US17228299

申请日：2021-04-12

Applicant: Infineon Technologies AG

Inventor： Gernot Unterweger ,  Mathias Sedner ,  Andrea Scenini ,  Hans-Peter Kreuter

IPC: H05B45/30 ,  B60Q1/14 ,  B60Q3/80 ,  H05B47/125

CPC classification number: H05B45/30 ,  B60Q1/1415 ,  B60Q3/80 ,  H05B47/125 ,  B60Q2300/054

Abstract: A control circuit may be configured to control light emitting diode (LED) driver circuits. The control circuit may be configured to generate a multicast of pixel intensity values based on data in memory or data received from a data source, and output the multicast on an interface, which may comprise a one-wire uni-directional interface. In some examples, a plurality of drivers may receive the multicast, and each of the plurality of drivers may drive different sets of LEDs based on the multicast.