Invention Grant
- Patent Title: Control and/or regulating system, circuit arrangement and procedure for reducing the maximum current in an LED (light-emitting diode) field
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Application No.: US17593038Application Date: 2020-02-18
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Publication No.: US11723132B2Publication Date: 2023-08-08
- Inventor: Bernd-Ulrich Hagemeier , Sarah Knoop , Carsten Wilks
- Applicant: Hella GmbH & Co. KGaA
- Applicant Address: DE Lippstadt
- Assignee: Hella GmbH & Co. KGaA
- Current Assignee: Hella GmbH & Co. KGaA
- Current Assignee Address: DE Lippstadt
- Agency: Husch Blackwell LLP
- Priority: DE 2019105954.2 2019.03.08
- International Application: PCT/EP2020/054229 2020.02.18
- International Announcement: WO2020/182428A 2020.09.17
- Date entered country: 2021-09-07
- Main IPC: H05B45/10
- IPC: H05B45/10 ; H05B45/32 ; H05B45/325
Abstract:
A control/regulating system is provided for controlling/regulating an LED field with n LEDs, where n>2, with outputs at which control/regulating signals for controlling/regulating controllable switching elements can be tapped. Activation/deactivation times
(
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jp
j
,
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of impulses can be defined by the control/regulating system through the control signals/regulating signals. One and/or several controllable switching elements can be actuated during the determined impulses for closing or opening. A number of k groups can be specified. Each LED is allocated to one of the k groups such that each of the k groups mj contains LEDs, where 1≤j≤k and Σj=1kmj=n apply, a reference time αj=α1 . . . αk can be determined for each group and the activation and deactivation time
(
t
ein
jp
j
,
t
aus
jp
j
)
of the impulse for each LED of every group can be determined as a factor of the reference time αj=α1 . . . αk, where 1≤pj≤mj applies.
(
t
ein
jp
j
,
t
aus
jp
j
)
of impulses can be defined by the control/regulating system through the control signals/regulating signals. One and/or several controllable switching elements can be actuated during the determined impulses for closing or opening. A number of k groups can be specified. Each LED is allocated to one of the k groups such that each of the k groups mj contains LEDs, where 1≤j≤k and Σj=1kmj=n apply, a reference time αj=α1 . . . αk can be determined for each group and the activation and deactivation time
(
t
ein
jp
j
,
t
aus
jp
j
)
of the impulse for each LED of every group can be determined as a factor of the reference time αj=α1 . . . αk, where 1≤pj≤mj applies.
Public/Granted literature
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