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1.发明授权Light emitting diode backlight system the driving apparatus and driving method thereof 有权发光二极管背光系统的驱动装置及其驱动方法公开(公告)号：US09113520B2
公开(公告)日：2015-08-18
申请号：US13831718
申请日：2013-03-15
Applicant: Power Forest Technology Corporation
Inventor： Hsiu-Ping Lin
CPC classification number: H05B33/0815 , H05B33/0827 , H05B33/0845
Abstract: A light emitting diode (LED) backlight system and a driving apparatus and a driving method thereof are provided. The driving apparatus is suitable for an LED backlight system with N LED strings, where N is a positive integer greater than 1, and which includes an LED driver and a switching unit. The LED driver is configured to receive a dimming signal and time-divisionally generate N control signals in response to a counting clock and an enabling time and a period time both related to the dimming signal. The switching unit is coupled to the LED driver and the N LED strings, and is configured to respectively control an on-off time ratio of a current flowing through each of the LED strings in response to the N control signals.
Abstract translation: 提供了一种发光二极管（LED）背光系统及其驱动装置及其驱动方法。 该驱动装置适用于具有N个LED串的LED背光系统，其中N是大于1的正整数，并且包括LED驱动器和开关单元。 LED驱动器被配置为响应于计数时钟和与调光信号相关的使能时间和周期时间而接收调光信号并且分时地产生N个控制信号。 开关单元耦合到LED驱动器和N个LED串，并且被配置为响应于N个控制信号分别控制流过每个LED串的电流的开 - 关时间比。
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2.发明申请LIGHT EMITTING DIODE BACKLIGHT SYSTEM THE DRIVING APPARATUS AND DRIVING METHOD THEREOF 有权发光二极管背光系统驱动装置及其驱动方法公开(公告)号：US20140167630A1
公开(公告)日：2014-06-19
申请号：US13831718
申请日：2013-03-15
Applicant: POWER FOREST TECHNOLOGY CORPORATION
Inventor： Hsiu-Ping Lin
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0827 , H05B33/0845
Abstract: A light emitting diode (LED) backlight system and a driving apparatus and a driving method thereof are provided. The driving apparatus is suitable for an LED backlight system with N LED strings, where N is a positive integer greater than 1, and which includes an LED driver and a switching unit. The LED driver is configured to receive a dimming signal and time-divisionally generate N control signals in response to a counting clock and an enabling time and a period time both related to the dimming signal. The switching unit is coupled to the LED driver and the N LED strings, and is configured to respectively control an on-off time ratio of a current flowing through each of the LED strings in response to the N control signals.
Abstract translation: 提供了一种发光二极管（LED）背光系统及其驱动装置及其驱动方法。 该驱动装置适用于具有N个LED串的LED背光系统，其中N是大于1的正整数，并且包括LED驱动器和开关单元。 LED驱动器被配置为响应于计数时钟和与调光信号相关的使能时间和周期时间而接收调光信号并且分时地产生N个控制信号。 开关单元耦合到LED驱动器和N个LED串，并且被配置为响应于N个控制信号分别控制流过每个LED串的电流的开 - 关时间比。
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