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1. 发明授权

US08552710B2 Calibration apparatus and method thereof, multi-channel driving circuit and current balancing method 有权
标题翻译：校准装置及其方法，多通道驱动电路和电流平衡方法
公开(公告)号：US08552710B2
公开(公告)日：2013-10-08
申请号：US12969572
申请日：2010-12-15
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： G01R17/02
CPC分类号： H05B33/0812 , H05B33/0815 , H05B33/0827 , H05B33/086
摘要： A calibration method for adjusting an offset voltage of a unit is proposed. The unit, capable of operating in a calibration mode or a normal mode, includes a first input terminal, a second input terminal and an output terminal. The calibration method includes: operating the unit in a calibration mode; providing a programmable voltage to the first input terminal; providing a constant voltage to the second input terminal; adjusting the programmable voltage monotonously when an output status of the output terminal is not changed; latching the programmable voltage when the output status toggles; and operating the unit in a normal mode after the output status toggles.
摘要翻译：提出了一种用于调整单元偏移电压的校准方法。该单元能够在校准模式或正常模式下操作，包括第一输入端子，第二输入端子和输出端子。校准方法包括：以校准模式操作本机; 向所述第一输入端提供可编程电压; 向第二输入端提供恒定电压; 当输出端子的输出状态不变时，单调调节可编程电压; 当输出状态切换时锁存可编程电压; 并在输出状态切换后以正常模式操作本机。

2. 发明申请

US20130038243A1 CURRENT-CONTROLLED STAGES, CONSTANT CURRENT CONTROL SYSTEMS, AND CURRENT CONTROL METHODS FOR DRIVING LEDS 审中-公开
标题翻译：电流控制阶段，恒定电流控制系统和驱动LED的电流控制方法
公开(公告)号：US20130038243A1
公开(公告)日：2013-02-14
申请号：US13549825
申请日：2012-07-16
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： H05B37/02 , H02J4/00 , G05F1/10
CPC分类号： H05B33/0827 , H05B33/0851 , Y10T307/406
摘要： Disclosure has current-controlling stages, backlight systems and control methods for driving LEDs. A disclosed current-controlling stage has a current controller and a feedback apparatus. The current controller is coupled to a light-emitting device, for making the driving current through the light-emitting device substantially a predetermined value. The current controller has a control node, at which a control voltage substantially controls the driving current. The feedback apparatus influences a compensation voltage based on the control voltage to keep the control voltage substantially around a first predetermined value. The compensation voltage substantially determines an output power of a voltage-controlling stage.
摘要翻译：公开具有电流控制阶段，背光系统和用于驱动LED的控制方法。所公开的电流控制级具有电流控制器和反馈装置。电流控制器耦合到发光器件，用于使驱动电流通过发光器件基本上为预定值。电流控制器具有控制节点，控制电压基本上控制驱动电流。反馈装置基于控制电压影响补偿电压，以使控制电压基本上保持在第一预定值附近。补偿电压基本上决定了电压控制级的输出功率。

3. 发明申请

US20120161639A1 INTEGRATED CIRCUITS, CONTROL METHODS AND LIGHTING SYSTEMS 有权
标题翻译：集成电路，控制方法和照明系统
公开(公告)号：US20120161639A1
公开(公告)日：2012-06-28
申请号：US13335946
申请日：2011-12-23
申请人： Ching-Tsan Lee , Pai-Feng Liu
发明人： Ching-Tsan Lee , Pai-Feng Liu
IPC分类号： H05B37/02
CPC分类号： H05B33/0884 , H05B33/0818 , H05B33/0887 , Y02B20/347
摘要： An integrated circuit is capable of controlling current through several light-emitting diode (LED) chains, each having several LEDs forward-connected in series between a major anode and a major cathode. Each major anode is coupled to a power node. The integrated circuit has several driving circuits, a detection node, a comparator, and a logic controller. The driving circuits can light the LED chains, respectively. Detection voltage at the detection node corresponds to voltage at one of the major cathodes. The comparator asserts a ready signal when the detection voltage exceeds a reference voltage. Receiving a dimming signal and the ready signal, if the dimming signal is asserted and the ready signal has been asserted, the logic controller enables the driving circuits to light the LED chains.
摘要翻译：集成电路能够通过几个发光二极管（LED）链控制电流，每个发光二极管（LED）链都具有在主阳极和主阴极之间串联连接的多个LED。每个主阳极耦合到电源节点。集成电路具有多个驱动电路，检测节点，比较器和逻辑控制器。驱动电路可以分别点亮LED链。检测节点处的检测电压对应于主阴极之一处的电压。当检测电压超过参考电压时，比较器置位就绪信号。接收到调光信号和就绪信号，如果调光信号被置位并且就绪信号已被置位，则逻辑控制器使得驱动电路能够点亮LED链。

4. 发明授权

US08044617B2 Motor control circuit and operation method thereof 有权
标题翻译：电动机控制电路及其运行方法
公开(公告)号：US08044617B2
公开(公告)日：2011-10-25
申请号：US12208330
申请日：2008-09-10
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： H02P3/12
CPC分类号： B60L7/00 , B60L7/003
摘要： A motor control circuit for controlling a motor includes a brake circuit and a control circuit. The brake circuit is for making the motor enter a braking state. The control circuit is for detecting a residual energy of the motor in the braking state. When the residual energy conforms to a predetermined criterion, the control circuit makes the motor exit the braking state.
摘要翻译：用于控制电动机的电动机控制电路包括制动电路和控制电路。制动电路用于使电机进入制动状态。该控制电路用于在制动状态下检测电动机的剩余能量。当剩余能量符合预定标准时，控制电路使电动机退出制动状态。

5. 发明申请

US20110248699A1 CALIBRATION APPARATUS AND METHOD THEREOF, MULTI-CHANNEL DRIVING CIRCUIT AND CURRENT BALANCING METHOD 有权
标题翻译：校准装置及其方法，多通道驱动电路和电流平衡方法
公开(公告)号：US20110248699A1
公开(公告)日：2011-10-13
申请号：US12969572
申请日：2010-12-15
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： G01R17/02
CPC分类号： H05B33/0812 , H05B33/0815 , H05B33/0827 , H05B33/086
摘要： A calibration method for adjusting an offset voltage of a unit is proposed. The unit, capable of operating in a calibration mode or a normal mode, includes a first input terminal, a second input terminal and an output terminal. The calibration method includes: operating the unit in a calibration mode; providing a programmable voltage to the first input terminal; providing a constant voltage to the second input terminal; adjusting the programmable voltage monotonously when an output status of the output terminal is not changed; latching the programmable voltage when the output status toggles; and operating the unit in a normal mode after the output status toggles.
摘要翻译：提出了一种用于调整单元偏移电压的校准方法。该单元能够在校准模式或正常模式下操作，包括第一输入端子，第二输入端子和输出端子。校准方法包括：以校准模式操作本机; 向所述第一输入端提供可编程电压; 向第二输入端提供恒定电压; 当输出端子的输出状态不变时，单调调节可编程电压; 当输出状态切换时锁存可编程电压; 并在输出状态切换后以正常模式操作本机。

6. 发明申请

US20100264891A1 Control Method for Voltage Converter and Related Voltage Converter 审中-公开
标题翻译：电压转换器及相关电压转换器的控制方法
公开(公告)号：US20100264891A1
公开(公告)日：2010-10-21
申请号：US12625562
申请日：2009-11-25
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： G05F1/10
CPC分类号： H02M3/158 , H02M2001/0032 , Y02B70/16
摘要： A control method for a voltage converter includes providing a setting for a power-saving mode; entering the power-saving mode, and according to the setting, making the voltage converter output a preset level of energy; entering a normal mode, determining whether the voltage converter should enter into the power-thrift mode, and detecting an output response of the voltage converter; and adjusting the setting based upon the output response, to make the output response approximately be maintained in a preset range.
摘要翻译：电压转换器的控制方法包括提供省电模式的设定; 进入省电模式，并根据设置，使电压转换器输出预设的能量水平; 进入正常模式，确定电压转换器是否应进入功率节电模式，以及检测电压转换器的输出响应; 并且基于输出响应来调整设置，以使输出响应大致维持在预设范围内。

7. 发明授权

US08669706B2 Integrated circuits, control methods and lighting systems 有权
标题翻译：集成电路，控制方法和照明系统
公开(公告)号：US08669706B2
公开(公告)日：2014-03-11
申请号：US13311562
申请日：2011-12-06
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： H05B37/00
CPC分类号： H05B33/0887 , G01R31/025 , G01R31/2635 , H05B33/0815 , H05B33/0827
摘要： Integrated circuits, control methods, and related lighting systems are provided. One integrated circuit controls the currents flowing through light-emitting-diode chains, each having several light emitting diodes forward-connected between a main cathode and a main anode while all the main anodes are connected to a power node. The integrated circuit has a short detection node, a constant current source, a voltage clamping circuit, and a short-circuit comparator. The short detection node detects the highest cathode voltage of the main cathodes. The constant current source provides a constant current to the short detection node. While the light-emitting-diode chains are unlit, the voltage clamping circuit clamps the short detection node at a predetermined voltage. When the voltage of the short detection node exceeds a threshold voltage, the short-circuit comparator asserts a fault signal, indicating a short circuit of a light emitting diode.
摘要翻译：提供集成电路，控制方法和相关照明系统。一个集成电路控制流过发光二极管链的电流，每个具有正向连接在主阴极和主阳极之间的几个发光二极管，同时所有主阳极连接到电源节点。集成电路具有短检测节点，恒流源，钳位电路和短路比较器。短检测节点检测主阴极的最高阴极电压。恒流源向短路检测节点提供恒定电流。当发光二极管链不亮时，钳位电路将短路检测节点钳位在预定电压。当短路检测节点的电压超过阈值电压时，短路比较器置位故障信号，指示发光二极管的短路。

8. 发明授权

US08471605B2 Driving circuit having current balancing functionality 有权
标题翻译：具有电流平衡功能的驱动电路
公开(公告)号：US08471605B2
公开(公告)日：2013-06-25
申请号：US13470358
申请日：2012-05-14
申请人： Ching-Tsan Lee , Chung-Wei Lin
发明人： Ching-Tsan Lee , Chung-Wei Lin
IPC分类号： H03K3/00
CPC分类号： H05B33/0827
摘要： A driving circuit having current balancing functionality includes a control unit, a bias resistor, a current switch unit and plural current driving modules. The control unit is utilized for generating a control signal having at least one bit according to a control current. The bias resistor is put in use for providing a bias voltage according to a bias current. The current switch unit employs the control signal and plural bias setting currents to generate the bias current, for keeping the bias voltage within a preset voltage range. The current driving modules are used to provide plural driving currents according to the bias voltage and the control signal. Each current driving module includes a current-limit control unit which is utilized for controlling a corresponding driving current according to the control signal.
摘要翻译：具有电流平衡功能的驱动电路包括控制单元，偏置电阻器，电流开关单元和多个电流驱动模块。控制单元用于根据控制电流产生具有至少一位的控制信号。偏置电阻器被用于根据偏置电流提供偏置电压。电流开关单元采用控制信号和多个偏置设置电流来产生偏置电流，以将偏置电压保持在预设电压范围内。目前的驱动模块用于根据偏置电压和控制信号提供多个驱动电流。每个电流驱动模块包括用于根据控制信号控制相应的驱动电流的限流控制单元。

9. 发明申请

US20120098459A1 CIRCUIT FOR LIGHT EMITTING DIODES, RELATED INTEGRATED CIRCUIT AND CONTROL METHOD 有权
标题翻译：用于发光二极管的电路，相关的集成电路和控制方法
公开(公告)号：US20120098459A1
公开(公告)日：2012-04-26
申请号：US13276322
申请日：2011-10-19
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： H05B37/02
CPC分类号： H05B33/0827
摘要： A control circuit controls driving of an LED and a current-controlled device controls current through the LED. The current-controlled device has a control node. The control circuit has a driving circuit and a fault detector. In the driving circuit, a first comparator compares a current-setting signal with a sensing signal to generate a first comparison signal. Based on the first comparison signal, a buffer generates a driving signal to the control node and drives the current-controlled device. Within the fault detector, a second comparator compares the first comparison signal with the driving signal, generating a second comparison signal. A third comparator compares the driving signal with a threshold voltage, generating a third comparison signal. A fourth comparator compares the sensing signal with the current-setting signal, generating a fourth comparison signal. A decision maker enables or disables the driving circuit according to the second, third, and fourth comparison signals.
摘要翻译：控制电路控制LED的驱动，电流控制装置控制通过LED的电流。电流控制装置具有控制节点。控制电路具有驱动电路和故障检测器。在驱动电路中，第一比较器将电流设定信号与感测信号进行比较以产生第一比较信号。基于第一比较信号，缓冲器产生到控制节点的驱动信号并驱动电流控制装置。在故障检测器内，第二比较器将第一比较信号与驱动信号进行比较，产生第二比较信号。第三比较器将驱动信号与阈值电压进行比较，产生第三比较信号。第四比较器将感测信号与电流设定信号进行比较，产生第四比较信号。决策者根据第二，第三和第四比较信号启用或禁用驱动电路。

10. 发明申请

US20090302819A1 Circuit for Preventing Reverse Current and Method thereof 审中-公开
标题翻译：防止反向电流的电路及其方法
公开(公告)号：US20090302819A1
公开(公告)日：2009-12-10
申请号：US12324892
申请日：2008-11-28
申请人： Ching-Tsan Lee
发明人： Ching-Tsan Lee
IPC分类号： G05F1/00
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A circuit for preventing a reverse current is applicable to a voltage converter including a high-side switch, a low-side switch, and an inductor. The high-side and low-side switches are coupled in series between two power lines. The inductor is coupled between an output terminal of the voltage converter and a connection node connecting the high-side and low-side switches. The reverse current flows from the output terminal of the voltage converter to the connection node. The circuit includes a first detection module and a threshold voltage adjusting module. The first detection module detects whether the reverse current occurs within a dead time when both the high-side and low-side switches are off. The voltage adjusting module adjusts a crossing voltage according to whether the reverse current is detected. The low-side switch is turned off when the voltage of the connection node exceeds the crossing voltage.
摘要翻译：用于防止反向电流的电路可应用于包括高侧开关，低侧开关和电感器的电压转换器。高侧和低侧开关串联在两条电源线之间。电感器耦合在电压转换器的输出端子和连接高侧和低侧开关的连接节点之间。反向电流从电压转换器的输出端流向连接节点。电路包括第一检测模块和阈值电压调整模块。第一检测模块检测在高侧和低侧开关都断开时的死区时间内是否发生反向电流。电压调节模块根据是否检测到反向电流来调节交叉电压。当连接节点的电压超过交叉电压时，低侧开关被关闭。

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