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1. 发明授权

US09280928B2 Apparatus and method for driving LED display 有权
标题翻译： LED显示屏驱动装置及方法
公开(公告)号：US09280928B2
公开(公告)日：2016-03-08
申请号：US14056742
申请日：2013-10-17
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shean-Yih Chiou , Shang-Kuan Tang , Xinchao Peng
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2310/0216 , G09G2310/0245 , G09G2310/08 , G09G2320/0233 , G09G2330/06 , H03L7/1974
摘要： An apparatus for driving LED display includes a plurality of phase locked loop circuits. Each of the phase locked loop circuits includes a divider configured to receive the voltage controlled output signal and generate the feedback signal, a memory configured to generate a modulation profile codes and a sigma delta block. The divider receives a randomized numbers so as to change a dividing ratio over a modulation period. The sigma delta block includes at least one sigma delta modulator and at least one gain block. The sigma delta block is configured to receive the modulation profile codes and generate the randomized numbers to the divider. Each of the at least one gain block is configured to generate a value that is multiplied to at least one of the at least one sigma delta modulator so as to change a spread spectrum modulation depth.
摘要翻译：用于驱动LED显示器的装置包括多个锁相环电路。每个锁相环电路包括被配置为接收压控输出信号并产生反馈信号的分频器，被配置为产生调制分布码和Σ-Δ块的存储器。分频器接收随机数，以便在调制周期上改变分频比。 Σ-Δ块包括至少一个Σ-Δ调制器和至少一个增益块。 Σ-Δ块被配置为接收调制分布码，并将该随机化的数字产生到分频器。所述至少一个增益块中的每一个被配置为生成与所述至少一个Σ-Δ调制器中的至少一个相乘的值，以便改变扩频调制深度。

2. 发明授权

US09955542B2 Apparatus and method for driving LED display panel 有权
公开(公告)号：US09955542B2
公开(公告)日：2018-04-24
申请号：US15237040
申请日：2016-08-15
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shang-Kuan Tang , Wenjie Yang , Lei Shen , Yi Zhang , Yutao Chen , Shahnad Nadershahi
IPC分类号： H05B33/00 , H05B33/08 , G09G3/32
CPC分类号： H05B33/0845 , G09G3/32 , G09G2310/0267 , G09G2310/08 , G09G2320/064 , H05B33/0815 , H05B33/086
摘要： The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs.

3. 发明授权

US09704430B2 LED display device and method for operating the same 有权
公开(公告)号：US09704430B2
公开(公告)日：2017-07-11
申请号：US15370712
申请日：2016-12-06
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Juinn-Yan Chen , Shean-Yih Chiou , Shang-Kuan Tang
IPC分类号： G09G3/32 , G09G5/00 , G09G3/3208 , G09G5/393 , G09G5/395
CPC分类号： G09G3/32 , G06F3/1446 , G09G3/3208 , G09G5/006 , G09G5/393 , G09G5/395 , G09G2300/026 , G09G2352/00 , G09G2370/02 , G09G2370/04 , G09G2370/042 , G09G2370/10 , G09G2370/14
摘要： This disclosure describes an LED display device. The LED display device includes a transmitter, a plurality of first receivers coupled to the transmitter, a plurality of second receiver modules, wherein each of the second receiver modules is coupled to at least one of the first receivers and comprises a plurality of second receivers, a plurality of LED driver groups, each of the LED driver groups coupled to at least one of the second receivers and having a plurality of LED drivers, and a transformerless wire link connecting the plurality of first receivers to the plurality of second receiver modules, or the transformerless wire link connecting adjacent receivers of the plurality of second receivers therebetween.

4. 发明授权

US09485827B2 Apparatus and method for driving LED display panel 有权
标题翻译： LED显示面板驱动装置及方法
公开(公告)号：US09485827B2
公开(公告)日：2016-11-01
申请号：US13684197
申请日：2012-11-22
申请人： SCT Technology, Ltd.
发明人： Eric Li , Shang-Kuan Tang , Wenjie Yang , Lei Shen , Yi Zhang , Yutao Chen , Shahnad Nadershahi
IPC分类号： H05B37/02 , H05B33/08 , G09G3/32
CPC分类号： H05B33/0845 , G09G3/32 , G09G2310/0267 , G09G2310/08 , G09G2320/064 , H05B33/0815 , H05B33/086
摘要： The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs.
摘要翻译：本公开提供用于驱动LED显示面板的装置，电路和方法，以便确保以最小灰度级递送相等的全局电荷。在一个示例中，本公开的电路包括电流源，检测模块和测量模块。电流源被配置为产生LED的电流信号。检测模块被配置为响应于施加到LED的低电流来检测LED的正向电压。检测模块还被配置为保持检测到的正向电压。测量模块被配置成响应于施加到LED的显示电流，测量LED的阳极电压的时间周期上升到检测到的正向电压。

5. 发明授权

US09058762B2 Apparatus and method for driving LED display 有权
标题翻译： LED显示屏驱动装置及方法
公开(公告)号：US09058762B2
公开(公告)日：2015-06-16
申请号：US14082841
申请日：2013-11-18
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shang-Kuan Tang , Shen Lei , Yi Zhang
IPC分类号： H05B37/02 , G09G3/32 , G09G5/10
CPC分类号： G09G5/10 , G09G3/3283 , G09G2320/064 , G09G2330/12 , H03K2005/00202
摘要： This disclosure provides an output stage for a LED driver circuit. The output stage has an input module, a regulator module for maintaining a constant internal voltage, and an output module for generating output signals.
摘要翻译：本公开提供了用于LED驱动器电路的输出级。输出级具有输入模块，用于维持恒定的内部电压的调节器模块和用于产生输出信号的输出模块。

6. 发明授权

US09390647B2 Pulse width correction for LED display driver 有权
标题翻译： LED显示驱动器的脉冲宽度校正
公开(公告)号：US09390647B2
公开(公告)日：2016-07-12
申请号：US14337165
申请日：2014-07-21
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shang-Kuan Tang , Wenjie Yang , Yi Zhang
IPC分类号： G09G3/30 , G09G3/34 , G09G3/32
CPC分类号： G09G3/32 , G09G3/2014 , G09G3/3413 , G09G2320/0285 , G09G2320/064 , G09G2320/0666 , G09G2330/06
摘要： The LED display system comprises an array of LEDs and a driver circuit that employs a scrambled PWM generator. The scrambled PWM generator is configured to generate a plurality of PWM pulses. The PWM pulses are distributed into a corresponding number of refresh segments. The driver circuit is configured so that one or more of PWM pulses are extendable by a certain offset value so that the pulse width in the corresponding refresh segments is wide enough for the LED to emit light.
摘要翻译： LED显示系统包括LED阵列和采用加扰PWM发生器的驱动电路。加扰PWM发生器被配置为产生多个PWM脉冲。 PWM脉冲被分配到相应数量的刷新段。驱动器电路被配置为使得一个或多个PWM脉冲可延伸某个偏移值，使得相应的刷新段中的脉冲宽度足够大以使LED发光。

7. 发明授权

US09286825B2 Apparatus and method for driving LED display 有权
标题翻译： LED显示屏驱动装置及方法
公开(公告)号：US09286825B2
公开(公告)日：2016-03-15
申请号：US14056699
申请日：2013-10-17
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shean-Yih Chiou , Shang-Kuan Tang , Xinchao Peng
IPC分类号： G09G3/32 , G09G3/20 , G09G5/12
CPC分类号： G09G3/32 , G09G3/2088 , G09G5/12 , G09G2330/06
摘要： The apparatus for driving LED display includes a system control unit having a synchronization signal generator configured to generate a synchronization start signal and a plurality of phase locked loop circuits. Each of the phase locked loop circuits includes a divider coupled to the voltage controlled oscillator and configured to change the sequence of dividing ratios over a modulation period, a sigma delta modulator configured to generate a sequence of random numbers to the divider, and a spread spectrum modulation depth controller coupled to the sigma delta modulator and configured to receive the synchronization start signal from the synchronization signal generator. Upon receipt of the synchronization start signal, the spread spectrum modulation depth controller starts a spread spectrum modulation.
摘要翻译：用于驱动LED显示器的装置包括具有同步信号发生器的系统控制单元，其被配置为产生同步起始信号和多个锁相环电路。每个锁相环电路包括耦合到压控振荡器并被配置为在调制周期上改变分频比的序列的分频器，配置成产生分频器的随机数序列的Σ-Δ调制器，以及扩展频谱调制深度控制器，其耦合到所述Σ-Δ调制器并且被配置为从所述同步信号发生器接收所述同步开始信号。在接收到同步开始信号时，扩频调制深度控制器开始扩频调制。

8. 发明授权

US09747872B2 LED display device and method for operating the same 有权
公开(公告)号：US09747872B2
公开(公告)日：2017-08-29
申请号：US15370786
申请日：2016-12-06
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Juinn-Yan Chen , Shean-Yih Chiou , Shang-Kuan Tang
IPC分类号： G09G3/32 , G09G5/00 , G09G5/395 , G09G5/393 , G09G3/3208
CPC分类号： G09G5/395 , G09G3/32 , G09G3/3208 , G09G5/006 , G09G5/393 , G09G2300/026 , G09G2352/00 , G09G2370/02 , G09G2370/04 , G09G2370/042 , G09G2370/10 , G09G2370/14
摘要： This disclosure describes an LED display device. The LED display device includes a transmitter having a memory and a pixel mapping table, a plurality of first receivers coupled to the transmitter, a plurality of second receiver modules, and a plurality of LED driver groups. A unique address is assigned to a data packet with a use of the pixel mapping table. The data packet has a set of field information and the set of field information includes the unique address. Each of the second receiver modules is coupled to at least one of the first receivers and includes a plurality of second receivers. None of the plurality of second receivers comprises a pixel mapping memory. Each of the LED driver groups is coupled to one of the plurality of second receivers and includes a plurality of LED drivers.

9. 发明授权

US09089027B2 LED display systems 有权
公开(公告)号：US09089027B2
公开(公告)日：2015-07-21
申请号：US14598695
申请日：2015-01-16
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Chun Lu , Shahnad Nadershahi , Shang-Kuan Tang
IPC分类号： G09G3/32 , G09G3/34 , G09G5/10 , H05B33/08 , G09G3/20
CPC分类号： H05B33/0818 , G09G3/2018 , G09G3/32 , G09G3/3216 , G09G3/3283 , G09G3/3406 , G09G3/3413 , G09G3/3426 , G09G5/10 , G09G2320/0242 , G09G2320/0257 , G09G2320/0285 , G09G2320/029 , G09G2320/062 , G09G2320/064 , G09G2320/0666 , G09G2330/06 , H05B33/0857
摘要： An LED display system comprises an LED array and an LED driver circuit. An LED driver circuit comprises components including a phase lock loop, a pulse width modulation engine, a configuration register, a series of gain adjustable fast charge current sources, and a serial input/output interface. The components in this driver circuit may be integrated on a same chip. The LED array may be arranged in a common cathode configuration.

10. 发明申请

US20140139139A1 APPARATUS AND METHOD FOR DRIVING LED DISPLAY PANEL 有权
标题翻译：用于驱动LED显示面板的装置和方法
公开(公告)号：US20140139139A1
公开(公告)日：2014-05-22
申请号：US13684197
申请日：2012-11-22
申请人： SCT TECHNOLOGY, LTD.
发明人： Eric Li , Shang-Kuan Tang , Wenjie Yang , Lei Shen , Yi Zhang , Yutao Chen , Nedi Nadershahi
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , G09G3/32 , G09G2310/0267 , G09G2310/08 , G09G2320/064 , H05B33/0815 , H05B33/086
摘要： The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs.
摘要翻译：本公开提供用于驱动LED显示面板的装置，电路和方法，以便确保以最小灰度级递送相等的全局电荷。在一个示例中，本公开的电路包括电流源，检测模块和测量模块。电流源被配置为产生LED的电流信号。检测模块被配置为响应于施加到LED的低电流来检测LED的正向电压。检测模块还被配置为保持检测到的正向电压。测量模块被配置为响应于施加到LED的显示电流，测量LED的阳极电压的时间周期以升高到检测到的正向电压。

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