专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10314131B1 LED driver with brightness control and driving method thereof 有权
公开(公告)号：US10314131B1
公开(公告)日：2019-06-04
申请号：US16186432
申请日：2018-11-09
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Wen-Yen Chen , Ming-Hung Chang
IPC分类号： H05B33/08
摘要： The present disclosure provides an LED driver with brightness control and a driving method thereof, which adjust a first rate of a first current mirror, a second rate of a second current mirror, and a reference current of a current source according to the brightness to be presented (related to image brightness information) to adaptively adjust an LED current flowing through an LED string, thereby reducing the loss of the LED current during operation over an operating current range. Besides, the LED driver with brightness control and the driving method thereof do not require that an operator adjusts the variation of the LED current in different operating current ranges in advance, thereby reducing the test time and cost and avoiding the operator from deciding a wrong adjustment amount.

2. 发明授权

US11543455B2 Circuit measuring device and method 有权
公开(公告)号：US11543455B2
公开(公告)日：2023-01-03
申请号：US17205613
申请日：2021-03-18
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Chuang-Shun Xu , Ming-Hung Chang , Wen-Yen Chen
IPC分类号： G01R31/319 , G01R31/26 , G09G3/00
摘要： A circuit measuring device and a method thereof are provided. A voltage source supplies a common voltage such that a calibration current having a preset current value flows from a current-voltage converter to a final test machine. The current-voltage converter converts the calibration current into a calibration voltage. At this time, a voltage sensing component senses a voltage between an input terminal and an output terminal of the current-voltage converter to output sensed calibration data. The current-voltage converter converts a tested current outputted by a tested circuit into a tested voltage. At this time, the voltage sensing component senses the voltage between the input terminal and the output terminal of the current-voltage converter to output actual sensed data. When the final test machine determines that a difference between the sensed calibration data and the actual sensed data is larger than a threshold, the tested circuit is adjusted.

3. 发明授权

US09041461B2 Pop-free single-ended output class-D amplifier 有权
标题翻译：无弹跳单端输出D类放大器
公开(公告)号：US09041461B2
公开(公告)日：2015-05-26
申请号：US13684166
申请日：2012-11-22
申请人： Anpec Electronics Corporation
发明人： Ming-Hung Chang , Wen-Yen Chen
IPC分类号： H03F3/217 , H03F1/30
CPC分类号： H03F3/2171 , H03F1/305 , H03F3/217
摘要： A pop-free single-ended output class-D amplifier includes: an input signal generator for generating an input signal; a power supply for supplying input power; a reference voltage generator for generating a reference voltage; a gain-adjustable stage for generating an amplified signal according to the reference voltage and adjusting a gain of the single-ended output class-D amplifier; a pulse width modulation module for outputting a pulse width modulation signal according to the reference voltage, the amplified signal, and the input power; a low-pass filter for low-pass filtering the pulse width modulation signal to generate an output voltage; and a logic controller for generating at least one control signal to control the reference voltage generator, the gain-adjustable stage, and the pulse width modulation module according to the input power, the reference voltage, and the pulse width modulation signal.
摘要翻译：无弹头单端输出D类放大器包括：用于产生输入信号的输入信号发生器; 用于提供输入电力的电源; 用于产生参考电压的参考电压发生器; 用于根据参考电压产生放大信号并调整单端输出D类放大器的增益的增益可调级; 脉冲宽度调制模块，用于根据参考电压，放大信号和输入功率输出脉宽调制信号; 低通滤波器，用于低通滤波脉宽调制信号以产生输出电压; 以及逻辑控制器，用于根据输入功率，参考电压和脉冲宽度调制信号产生至少一个控制信号以控制参考电压发生器，增益可调阶段和脉冲宽度调制模块。

4. 发明授权

US10999912B1 Lighting driver for driving light-emitting component at high speed 有权
公开(公告)号：US10999912B1
公开(公告)日：2021-05-04
申请号：US16925412
申请日：2020-07-10
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Wen-Yen Chen , Ming-Hung Chang
IPC分类号： H05B45/30 , H05B45/46 , H05B45/335
摘要： A lighting driver for driving a light-emitting component at a high speed is provided. A control terminal of a second transistor is connected to a control terminal and a first terminal of a first transistor. Input terminals of an operational amplifier are connected to the first terminal of the first transistor and first terminals of first and second switches. Control terminals of third and fourth transistors are connected to an output terminal of the operational amplifier. Second terminals of the first switch and the fourth transistor are connected to a first terminal of the second transistor. A second terminal of the second switch and a current source are connected to a second terminal of the third transistor. A first terminal of the fourth transistor is connected to the light-emitting component. A control circuit is connected to the current source, and control terminals of the first and second switches.

5. 发明授权

US10667363B1 System and method of driving LED string 有权
公开(公告)号：US10667363B1
公开(公告)日：2020-05-26
申请号：US16564380
申请日：2019-09-09
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Wen-Yen Chen , Ming-Hung Chang
IPC分类号： H05B45/46 , H05B45/10 , G09G3/34
摘要： A method of driving an LED string is provided and includes steps of: (a) determining whether or not a detected voltage of a control terminal of a transistor is lower than a first reference voltage by a first comparator, if not, raising a voltage of the LED string by a power supply device and performing step (a), if yes, performing step (b); (b) determining whether or not the detected voltage is lower than a second reference voltage by a second comparator, if not, determining that a short circuit occurs, if yes, performing step (c); (c) increasing an output current of the LED string by an input current source; and (d) determining whether or not a current of the LED string reaches a maximum current that is adjustable by a light controller, if yes, determining that a short circuit occurs, if not, returning to step (c).

6. 发明申请

US20140062592A1 POP-FREE SINGLE-ENDED OUTPUT CLASS-D AMPLIFIER 有权
标题翻译：无端口单输出分类放大器
公开(公告)号：US20140062592A1
公开(公告)日：2014-03-06
申请号：US13684166
申请日：2012-11-22
申请人： ANPEC ELECTRONICS CORPORATION
发明人： Ming-Hung Chang , Wen-Yen Chen
IPC分类号： H03F3/217
CPC分类号： H03F3/2171 , H03F1/305 , H03F3/217
摘要： A pop-free single-ended output class-D amplifier includes: an input signal generator for generating an input signal; a power supply for supplying input power; a reference voltage generator for generating a reference voltage; a gain-adjustable stage for generating an amplified signal according to the reference voltage and adjusting a gain of the single-ended output class-D amplifier; a pulse width modulation module for outputting a pulse width modulation signal according to the reference voltage, the amplified signal, and the input power; a low-pass filter for low-pass filtering the pulse width modulation signal to generate an output voltage; and a logic controller for generating at least one control signal to control the reference voltage generator, the gain-adjustable stage, and the pulse width modulation module according to the input power, the reference voltage, and the pulse width modulation signal.
摘要翻译：无弹头单端输出D类放大器包括：用于产生输入信号的输入信号发生器; 用于提供输入电力的电源; 用于产生参考电压的参考电压发生器; 用于根据参考电压产生放大信号并调整单端输出D类放大器的增益的增益可调级; 脉冲宽度调制模块，用于根据参考电压，放大信号和输入功率输出脉宽调制信号; 低通滤波器，用于低通滤波脉宽调制信号以产生输出电压; 以及逻辑控制器，用于根据输入功率，参考电压和脉冲宽度调制信号产生至少一个控制信号以控制参考电压发生器，增益可调阶段和脉冲宽度调制模块。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式