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公开(公告)号：US08022638B2
公开(公告)日：2011-09-20
申请号：US12437692
申请日：2009-05-08
申请人： Yu Jin Jang , Byoung Own Min , Jung Chul Gong , Sang Cheol Shin , Jeong In Cheon
发明人： Yu Jin Jang , Byoung Own Min , Jung Chul Gong , Sang Cheol Shin , Jeong In Cheon
IPC分类号： H05B41/292
CPC分类号： H05B41/2855
摘要： Disclosed is a liquid crystal display (LCD) backlight inverter. The LCD backlight inverter includes a lamp open detection unit outputting a first open detection voltage for a preset time period when it is determined that a predetermined lamp is open, based on a current voltage corresponding to the current of the predetermined lamp of a plurality of lamps, a first open determination unit outputting an open detection signal when the first open detection voltage is input, a second open determination unit outputting a protection signal when it is determined that all of the plurality of lamps are open based on detection voltages of the plurality of lamps, a temporary protection determination unit outputting a frequency change signal when both the open detection signal and the protection signal are input, and an operating frequency control unit changing an operating frequency to a preset protective frequency according to the frequency change.
摘要翻译： 公开了一种液晶显示（LCD）背光逆变器。 LCD背光逆变器包括：灯开路检测单元，基于与多个灯的预定灯的电流相对应的电流电压，当确定预定灯打开时，将预定时间段的第一开路检测电压输出 第一开路判定单元，当输入第一开路检测电压时，输出开路检测信号;第二开路判定单元，基于多个灯的检测电压确定多个灯全部断开时，输出保护信号 灯，当输入开放检测信号和保护信号时输出频率变化信号的临时保护判定单元，以及根据频率变化将工作频率改变为预设保护频率的工作频率控制单元。
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公开(公告)号：US08184111B2
公开(公告)日：2012-05-22
申请号：US12464399
申请日：2009-05-12
申请人： Seung Kon Kong , Byoung Own Min , Jung Chul Gong , Jeong In Cheon , Yu Jin Jang
发明人： Seung Kon Kong , Byoung Own Min , Jung Chul Gong , Jeong In Cheon , Yu Jin Jang
IPC分类号： G09G5/00
CPC分类号： G09G3/3406 , G09G2320/0247
摘要： A driver for display provides a driving signal having a frequency synchronized with that of an image signal when the image signal is normal and provides a driving signal having a predetermined frequency when the image signal is abnormal, thereby performing a stable operation. The driver includes a frequency detection unit detecting a frequency difference between a frequency of an inputted image signal and a frequency of a frequency-divided driving signal, a driving signal generation unit generating the driving signal having a frequency synchronized with the frequency of the image signal according to a detection result of the frequency detection unit, and a control unit stopping a frequency detection operation of the frequency detection unit when the detection result of the frequency detection unit shows an abnormal operation.
摘要翻译： 当图像信号正常时，用于显示的驱动器提供具有与图像信号的频率同步的频率的驱动信号，并且当图像信号异常时提供具有预定频率的驱动信号，从而执行稳定的操作。 驱动器包括检测输入图像信号的频率与分频驱动信号的频率之间的频率差的频率检测单元，产生具有与图像信号的频率同步的频率的驱动信号的驱动信号生成单元 根据频率检测单元的检测结果，以及当频率检测单元的检测结果显示异常操作时，控制单元停止频率检测单元的频率检测操作。
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公开(公告)号：US20100134450A1
公开(公告)日：2010-06-03
申请号：US12464399
申请日：2009-05-12
申请人： Seung Kon KONG , Byoung Own Min , Jung Chul Gong , Jeong In Cheon , Yu Jin Jang
发明人： Seung Kon KONG , Byoung Own Min , Jung Chul Gong , Jeong In Cheon , Yu Jin Jang
IPC分类号： G06F3/038
CPC分类号： G09G3/3406 , G09G2320/0247
摘要： A driver for display provides a driving signal having a frequency synchronized with that of an image signal when the image signal is normal and provides a driving signal having a predetermined frequency when the image signal is abnormal, thereby performing a stable operation. The driver includes a frequency detection unit detecting a frequency difference between a frequency of an inputted image signal and a frequency of a frequency-divided driving signal, a driving signal generation unit generating the driving signal having a frequency synchronized with the frequency of the image signal according to a detection result of the frequency detection unit, and a control unit stopping a frequency detection operation of the frequency detection unit when the detection result of the frequency detection unit shows an abnormal operation.
摘要翻译： 当图像信号正常时，用于显示的驱动器提供具有与图像信号的频率同步的频率的驱动信号，并且当图像信号异常时提供具有预定频率的驱动信号，从而执行稳定的操作。 驱动器包括检测输入图像信号的频率与分频驱动信号的频率之间的频率差的频率检测单元，产生具有与图像信号的频率同步的频率的驱动信号的驱动信号生成单元 根据频率检测单元的检测结果，以及当频率检测单元的检测结果显示异常操作时，控制单元停止频率检测单元的频率检测操作。
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公开(公告)号：US20100141300A1
公开(公告)日：2010-06-10
申请号：US12437713
申请日：2009-05-08
申请人： Bo Hyun Hwang , Byoung Own Min , Jeong In Cheon , Yu Jin Jang , Seung Kon Kong , Sang Cheol Shin
发明人： Bo Hyun Hwang , Byoung Own Min , Jeong In Cheon , Yu Jin Jang , Seung Kon Kong , Sang Cheol Shin
IPC分类号： H03K19/0175
CPC分类号： H05B33/0818 , G09G3/3406 , G09G2330/04 , H05B33/0848 , H05B33/0887 , H05B41/2828 , H05B41/2855 , Y02B20/346
摘要： An inverter driver integrated circuit (IC) includes a control signal generator generating a first control signal and a second control signal by use of a pulse width modulation oscillator signal, a comparator comparing a half-wave rectified signal of a lamp feedback signal fed back from a lamp with a preset reference signal to output a lamp state signal, a first sensor receiving the lamp state signal and the second control signal to output a first sensing signal, and a second sensor receiving the first sensing signal and the first control signal to output a second sensing signal.
摘要翻译： 逆变器驱动器集成电路（IC）包括通过使用脉冲宽度调制振荡器信号产生第一控制信号和第二控制信号的控制信号发生器，比较将反馈信号反馈的灯反馈信号的半波整流信号 具有预置参考信号以输出灯状态信号的灯，接收灯状态信号的第一传感器和第二控制信号以输出第一感测信号，以及接收第一感测信号和第一控制信号的第二传感器，以输出 第二感测信号。
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公开(公告)号：US07834711B2
公开(公告)日：2010-11-16
申请号：US12166885
申请日：2008-07-02
申请人： Yu Jin Jang , Byoung Own Min , Seung Kon Kong , Sang Cheol Shin , Jung Chul Gong
发明人： Yu Jin Jang , Byoung Own Min , Seung Kon Kong , Sang Cheol Shin , Jung Chul Gong
摘要： There is provided a frequency-variable oscillator that varies, even when a frequency of an input signal is varied, a frequency of an oscillation signal according to the varied frequency of the input signal. The frequency-variable oscillator includes: a voltage-to-current converter circuit for converting a voltage level of an input signal into a current level within a predetermined range; and an oscillator circuit for varying a frequency according to the current level from the voltage-to-current converter circuit and oscillating the varied frequency.
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公开(公告)号：US07777527B2
公开(公告)日：2010-08-17
申请号：US12200031
申请日：2008-08-28
申请人： Jung Chul Gong , Byoung Own Min , Yu Jin Jang , Seung Kon Kong , Sang Cheol Shin
发明人： Jung Chul Gong , Byoung Own Min , Yu Jin Jang , Seung Kon Kong , Sang Cheol Shin
CPC分类号： H03D13/003
摘要： There is provided a phase detection apparatus that can accurately detect a phase difference between an input signal and a reference signal even when the input signal and the reference signal have different duty cycles. A phase detection apparatus according to an aspect of the invention may include: a pulse generation unit generating a first pulse signal on an edge of an input pulse signal, and a second pulse signal based on an edge of a reference pulse signal having a predetermined phase; and a detection unit detecting a phase difference between the first pulse signal and the second pulse signal from the pulse generation unit.
摘要翻译： 提供了即使在输入信号和参考信号具有不同的占空比的情况下，也可以精确地检测输入信号和参考信号之间的相位差的相位检测装置。 根据本发明的一个方面的相位检测装置可以包括：脉冲产生单元，其在输入脉冲信号的边缘上产生第一脉冲信号，以及基于具有预定相位的参考脉冲信号的边沿的第二脉冲信号 ; 以及检测单元，其从所述脉冲发生单元检测所述第一脉冲信号和所述第二脉冲信号之间的相位差。
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公开(公告)号：US20080042627A1
公开(公告)日：2008-02-21
申请号：US11819571
申请日：2007-06-28
申请人： Sang Cheol Shin , Byoung Own Min , Jung Chul Gong , Yu Jin Jang
发明人： Sang Cheol Shin , Byoung Own Min , Jung Chul Gong , Yu Jin Jang
IPC分类号： G05F1/10
CPC分类号： H05B41/282 , G09G3/3406 , H05B41/2822 , H05B41/2855 , Y02B20/183
摘要： A voltage feedback circuit for a liquid crystal display backlight inverter including a plurality of first and second transformers driven oppositely to each other, the voltage feedback circuit including: a first voltage detector detecting a first drive voltage from a first transformer; a second voltage detector detecting a second drive voltage from a second transformer; a peak detector detecting a peak of a voltage detected at a detection connection node at which an output end of the first voltage detector and an output end of the second voltage detector are connected; a voltage adjustor adjusting a peak voltage from the peak detector according to a predetermined voltage ratio; and anerror detector detecting a difference voltage between the detected voltage from the voltage adjustor and a predetermined reference voltage.
摘要翻译： 一种用于液晶显示器背光源逆变器的电压反馈电路，包括彼此相对驱动的多个第一和第二变压器，所述电压反馈电路包括：第一电压检测器，检测来自第一变压器的第一驱动电压; 第二电压检测器，检测来自第二变压器的第二驱动电压; 检测在第一电压检测器的输出端和第二电压检测器的输出端连接的检测连接节点处检测到的电压的峰值的峰值检测器; 电压调节器，根据预定电压比调整来自峰值检测器的峰值电压; 和检测来自电压调节器的检测电压与预定参考电压之间的差分电压的异常检测器。
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公开(公告)号：US20070285381A1
公开(公告)日：2007-12-13
申请号：US11808161
申请日：2007-06-07
申请人： Jung Chul Gong , Byoung Own Min , Yu Jin Jang , Sang Cheol Shin
发明人： Jung Chul Gong , Byoung Own Min , Yu Jin Jang , Sang Cheol Shin
CPC分类号： H05B41/2828 , G09G3/3406 , Y02B20/186
摘要： An inverter driving circuit for an LCD is switched on/off more stably to improve heating radiation characteristics and drive efficiency. In the driving circuit, a controller supplies a first driving signal. A level shifter provides a second driving signal. A first delay circuit delays a rising section of the first driving signal to provide the first driving signal. A second delay circuit delays a falling section of the second driving signal to provide the second driving signal. Also, a power switching circuit is provided. The inverter driving circuit for the LCD, when a switching device thereof is turned off, has less current flowing in the switching device, thereby generating less heat. In addition, the inverter driving circuit prevents heat generation caused by current flowing reversely in the switching device, thereby enhancing drive efficiency.
摘要翻译： 用于LCD的逆变器驱动电路更稳定地接通/断开以提高加热辐射特性和驱动效率。 在驱动电路中，控制器提供第一驱动信号。 电平移位器提供第二驱动信号。 第一延迟电路延迟第一驱动信号的上升部分以提供第一驱动信号。 第二延迟电路延迟第二驱动信号的下降部分以提供第二驱动信号。 另外，还提供了电源开关电路。 用于LCD的逆变器驱动电路当其开关装置关闭时，在开关装置中流动的电流较少，从而产生较少的热量。 此外，逆变器驱动电路防止在开关装置中逆流流动的热量产生，从而提高驱动效率。
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公开(公告)号：US07902932B2
公开(公告)日：2011-03-08
申请号：US12166885
申请日：2008-07-02
申请人： Yu Jin Jang , Byoung Own Min , Seung Kon Kong , Sang Cheol Shin , Jung Chul Gong
发明人： Yu Jin Jang , Byoung Own Min , Seung Kon Kong , Sang Cheol Shin , Jung Chul Gong
CPC分类号： H03K4/502
摘要： There is provided a frequency-variable oscillator that varies, even when a frequency of an input signal is varied, a frequency of an oscillation signal according to the varied frequency of the input signal. The frequency-variable oscillator includes: a voltage-to-current converter circuit for converting a voltage level of an input signal into a current level within a predetermined range; and an oscillator circuit for varying a frequency according to the current level from the voltage-to-current converter circuit and oscillating the varied frequency.
摘要翻译： 提供了一种变频振荡器，即使输入信号的频率发生变化，也可根据输入信号的频率变化振荡信号的频率。 变频振荡器包括：电压 - 电流转换器电路，用于将输入信号的电压电平转换成预定范围内的电流电平; 以及用于根据来自电压 - 电流转换器电路的电流电平改变频率并振荡变化的频率的振荡器电路。
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公开(公告)号：US07443111B2
公开(公告)日：2008-10-28
申请号：US11812554
申请日：2007-06-20
申请人： Yu Jin Jang , Byoung Own Min , Sang Cheol Shin , Jung Chul Gong
发明人： Yu Jin Jang , Byoung Own Min , Sang Cheol Shin , Jung Chul Gong
CPC分类号： H05B41/2855
摘要： A liquid crystal display backlight inverter including a first error amplifying unit receiving and comparing a first detection voltage corresponding to a current flowing through a lamp with a first preset reference voltage and outputting a first error voltage corresponding to an error therebetween; a second error amplifying unit receiving and comparing a second detection voltage corresponding to a voltage applied to the lamp with a second preset reference voltage and outputting a second error voltage corresponding to an error therebetween; a feedback selector selecting one of the outputs of the first and second error amplifying unit according to an error between the second detection voltage and a third preset reference voltage; and a lamp control pulse generator generating a pulse signal having a duty controlled according to one of the first error voltage and second error voltage.
摘要翻译： 一种液晶显示器背光逆变器，包括：第一误差放大单元，接收和比较与流过灯的电流相对应的第一检测电压与第一预设参考电压，并输出与其间的误差对应的第一误差电压; 第二误差放大单元，接收和比较与施加到所述灯的电压相对应的第二检测电压与第二预设参考电压，并输出与其之间的误差对应的第二误差电压; 反馈选择器，根据第二检测电压和第三预置参考电压之间的误差来选择第一和第二误差放大单元的输出之一; 以及灯控制脉冲发生器，其产生具有根据第一误差电压和第二误差电压之一控制的占空比的脉冲信号。
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