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. 发明申请

US20080165114A1 LCD BACKLIGHT DRIVING DEVICE WITH AN ISOLATING TRANSFORMER 审中-公开
标题翻译：具有隔离变压器的液晶背光驱动装置
公开(公告)号：US20080165114A1
公开(公告)日：2008-07-10
申请号：US11621922
申请日：2007-01-10
申请人： Cheng-Chia Hsu , Yu-Cheng Pan , Ho-Wen Chen
发明人： Cheng-Chia Hsu , Yu-Cheng Pan , Ho-Wen Chen
IPC分类号： G09G3/36
CPC分类号： H05B41/2825
摘要： An LCD backlight driving device with an isolating transformer comprises a DC power supply, a square wave generator, a square wave controller, said isolating transformer and a driver transformer; wherein said isolating transformer has a primary side connected to said square wave generator and a secondary side connected to said driver transformer. Since said isolating transformer is placed between said square wave generator and said driver transformer, it effectively shortens a safety distance required for setting up said driver transformer, as compared to when said driver transformer is used directly; as a result, the area for implementing a circuit board is decreased and the manufacturing cost of said device is reduced.
摘要翻译：具有隔离变压器的LCD背光驱动装置包括直流电源，方波发生器，方波控制器，所述隔离变压器和驱动变压器; 其中所述隔离变压器具有连接到所述方波发生器的初级侧和连接到所述驱动变压器的次级侧。由于所述隔离变压器位于所述方波发生器和所述驱动变压器之间，因此与直接使用所述驱动变压器相比，其有效地缩短了设置所述驱动变压器所需的安全距离; 结果，实现电路板的面积减小，并且所述装置的制造成本降低。

2. 发明申请

US20070170872A1 Control device for multiple lamp currents of liquid crystal display backlight source 审中-公开
标题翻译：液晶显示器背光源的多灯电流控制装置
公开(公告)号：US20070170872A1
公开(公告)日：2007-07-26
申请号：US11335656
申请日：2006-01-20
申请人： Cheng-Chia Hsu , Teng-Kang Chang , Teng-Ho Wu , Ho-Wen Chen
发明人： Cheng-Chia Hsu , Teng-Kang Chang , Teng-Ho Wu , Ho-Wen Chen
IPC分类号： H05B41/16
CPC分类号： H05B41/2822
摘要： A control device for multiple lamp currents of a liquid crystal display (LCD) backlight source, comprising an electronic power switch, a transformer, an inverter and an IC pulse width modulation (PWM) control module. The transformer has a primary side connected to the electronic power switch and a secondary side having two ends each connected to an end of a set of lamp composed of two lamps. The inverter has two sets of coil connected to the other end of the two sets of lamp. The IC PWM control module is connected between the inverter and the electronic power switch and through which the currents flown through the two sets of lamp may be balanced. Meanwhile, the current flown through the inverter is feedback to the IC PWM control module by which a control signal is outputted to the electronic power switch by determining and processing the feedback current, thereby controlling an output signal from the electronic power switch. Therefore, luminance of the multiple lamps may be controlled and maintained.
摘要翻译：一种用于液晶显示（LCD）背光源的多个灯电流的控制装置，包括电子电源开关，变压器，逆变器和IC脉冲宽度调制（PWM）控制模块。变压器具有连接到电子电源开关的初级侧，并且具有两端的次级侧各自连接到由两个灯组成的一组灯的端部。变频器有两组线圈连接到两套灯的另一端。 IC PWM控制模块连接在逆变器和电子电源开关之间，电流通过两组灯泡可以平衡。同时，通过逆变器流过的电流反馈给IC PWM控制模块，通过该控制模块通过确定和处理反馈电流将控制信号输出到电子电源开关，从而控制来自电子电源开关的输出信号。因此，可以控制和维持多个灯的亮度。

3. 发明授权

US07212045B2 Double frequency signal generator 失效
公开(公告)号：US07212045B2
公开(公告)日：2007-05-01
申请号：US11187874
申请日：2005-07-25
申请人： Cheng-Chia Hsu , Teng-Ho Wu , Yu-Cheng Pan , Ho-Wen Chen
发明人： Cheng-Chia Hsu , Teng-Ho Wu , Yu-Cheng Pan , Ho-Wen Chen
IPC分类号： H03B19/00
CPC分类号： H03K5/00006 , H03K5/1565
摘要： A double frequency signal generator to which a synchronization signal having a duty cycle of 1% to 999% is inputted. The synchronization signal is used for triggering of a switching component at positive and negative edges to generate a triangular-wave signal. An average of voltages of the triangular-wave signal is acquired and compared with the triangular-wave signal at a comparator to generate a square-wave having a duty cycle of 50%. Then, the square-wave signal is used for triggering at positive and negative edges to generate a double frequency signal. As such, the high cost issue and the limitation of a square-wave input signal occurred in the prior art may be efficiently overcome.

4. 发明申请

US20060186895A1 BRIDGE TYPE PHASE DETECTION DEVICE 失效
标题翻译：桥式相检测装置
公开(公告)号：US20060186895A1
公开(公告)日：2006-08-24
申请号：US11237931
申请日：2005-09-29
申请人： Cheng-Chia Hsu , Teng-Ho Wu , Ho-Wen Chen , Teng-Kang Chang
发明人： Cheng-Chia Hsu , Teng-Ho Wu , Ho-Wen Chen , Teng-Kang Chang
IPC分类号： G01R27/02
CPC分类号： H05B41/2855 , H05B41/2827
摘要： A bridge type phase detection device comprises one or more than one transformer, a plurality of tubes, a voltage-detecting protection circuit and a first, second and third impedance, wherein a first tube of said plurality of tubes has a phase opposite to that of a second tube of said plurality of tubes, and a first end of said first impedance coupling with a secondary side of said transformer and a first end of said first tube, a first end of said second impedance coupling with said secondary side of said transformer and a first end of said second tube, then a second end of said first impedance connecting to a second end of said second impedance to form a detection point, said detection point coupling with said third impedance and said voltage-detecting protection circuit; said detection point having a voltage value derived from calculating a sum of said phase of said first impedance and that of said second impedance, then an output voltage divided among said first, two and third impedance, resulting in approximately zero voltage at said detection point during normal operation, if said voltage-detecting protection circuit detecting a non-zero voltage, it is concluded that a tube anomaly is present.
摘要翻译：桥型相位检测装置包括一个或多个变压器，多个管，电压检测保护电路和第一，第二和第三阻抗，其中所述多个管的第一管具有与所述多个管的第二管，以及与所述变压器的次级侧和所述第一管的第一端的所述第一阻抗耦合的第一端，与所述变压器的所述次级侧的所述第二阻抗耦合的第一端和所述第二管的第一端，然后所述第一阻抗的第二端连接到所述第二阻抗的第二端，以形成检测点，所述检测点与所述第三阻抗耦合并且所述电压检测保护电路; 所述检测点具有从计算所述第一阻抗的所述相位和所述第二阻抗的所述相位之和导出的电压值，然后在所述第一，第二和第三阻抗之间划分的输出电压，在所述检测点期间导致近似为零的电压正常工作时，如果所述电压检测保护电路检测到非零电压，则得出结论是存在管异常。

5. 发明申请

US20100271358A1 LCD BACKLIGHT DRIVING DEVICE WITH AN ISOLATING TRANSFORMER 失效
标题翻译：具有隔离变压器的液晶背光驱动装置
公开(公告)号：US20100271358A1
公开(公告)日：2010-10-28
申请号：US12832984
申请日：2010-07-08
申请人： Cheng-Chia HSU , Yu-Cheng PAN , Ho-Wen CHEN
发明人： Cheng-Chia HSU , Yu-Cheng PAN , Ho-Wen CHEN
IPC分类号： G09G3/36 , G06F3/038
CPC分类号： H05B41/2827
摘要： An LCD backlight driving device with an isolating transformer comprises a DC power supply, a square wave generator, a square wave controller, said isolating transformer and a driver transformer; wherein said isolating transformer has a primary side connected to said square wave generator and a secondary side connected to said driver transformer, since said isolating transformer is placed between said square wave generator and said driver transformer, it helps to effectively shorten a safety distance required for setting up said driver transformer; the present invention uses said isolating transformer to shorten the safety distance required than that of using said driver transformer directly and to decrease an area in implementing a circuit board and to cut cost of said device.
摘要翻译：具有隔离变压器的LCD背光驱动装置包括直流电源，方波发生器，方波控制器，所述隔离变压器和驱动变压器; 其中所述隔离变压器具有连接到所述方波发生器的初级侧和连接到所述驱动变压器的次级侧，因为所述隔离变压器被放置在所述方波发生器和所述驱动变压器之间，所以有助于有效地缩短设置驱动变压器; 本发明使用所述隔离变压器来缩短直接使用所述驱动变压器所需的安全距离，并且减少实现电路板的面积并降低所述装置的成本。

6. 发明授权

US07109723B2 Bridge type phase detection device 失效
标题翻译：桥式相位检测装置
公开(公告)号：US07109723B2
公开(公告)日：2006-09-19
申请号：US11237931
申请日：2005-09-29
申请人： Cheng-Chia Hsu , Teng-Ho Wu , Ho-Wen Chen , Teng-Kang Chang
发明人： Cheng-Chia Hsu , Teng-Ho Wu , Ho-Wen Chen , Teng-Kang Chang
IPC分类号： G01R27/02
CPC分类号： H05B41/2855 , H05B41/2827
摘要： A bridge type phase detection device comprises one or more than one transformer, a plurality of tubes, a voltage-detecting protection circuit and a first, second and third impedance, wherein a first tube of said plurality of tubes has a phase opposite to that of a second tube of said plurality of tubes, and a first end of said first impedance coupling with a secondary side of said transformer and a first end of said first tube, a first end of said second impedance coupling with said secondary side of said transformer and a first end of said second tube, then a second end of said first impedance connecting to a second end of said second impedance to form a detection point, said detection point coupling with said third impedance and said voltage-detecting protection circuit; said detection point having a voltage value derived from calculating a sum of said phase of said first impedance and that of said second impedance, then an output voltage divided among said first, two and third impedance, resulting in approximately zero voltage at said detection point during normal operation, if said voltage-detecting protection circuit detecting a non-zero voltage, it is concluded that a tube anomaly is present.
摘要翻译：桥型相位检测装置包括一个或多个变压器，多个管，电压检测保护电路和第一，第二和第三阻抗，其中所述多个管的第一管具有与所述多个管的第二管，以及与所述变压器的次级侧和所述第一管的第一端的所述第一阻抗耦合的第一端，与所述变压器的所述次级侧的所述第二阻抗耦合的第一端和所述第二管的第一端，然后所述第一阻抗的第二端连接到所述第二阻抗的第二端，以形成检测点，所述检测点与所述第三阻抗耦合并且所述电压检测保护电路; 所述检测点具有从计算所述第一阻抗的所述相位和所述第二阻抗的所述相位之和导出的电压值，然后在所述第一，第二和第三阻抗之间划分的输出电压，在所述检测点期间导致近似为零的电压正常工作时，如果所述电压检测保护电路检测到非零电压，则得出结论是存在管异常。

7. 发明申请

US20070018697A1 Double frequency signal generator 失效
标题翻译：双频信号发生器
公开(公告)号：US20070018697A1
公开(公告)日：2007-01-25
申请号：US11187874
申请日：2005-07-25
申请人： Cheng-Chia Hsu , Teng-Ho Wu , Yu-Cheng Pan , Ho-Wen Chen
发明人： Cheng-Chia Hsu , Teng-Ho Wu , Yu-Cheng Pan , Ho-Wen Chen
IPC分类号： H03B19/00
CPC分类号： H03K5/00006 , H03K5/1565
摘要： A double frequency signal generator to which a synchronization signal having a duty cycle of 1% to 999% is inputted. The synchronization signal is used for triggering of a switching component at positive and negative edges to generate a triangular-wave signal. An average of voltages of the triangular-wave signal is acquired and compared with the triangular-wave signal at a comparator to generate a square-wave having a duty cycle of 50%. Then, the square-wave signal is used for triggering at positive and negative edges to generate a double frequency signal. As such, the high cost issue and the limitation of a square-wave input signal occurred in the prior art may be efficiently overcome.
摘要翻译：输入占空比为1％〜999％的同步信号的双频信号发生器。同步信号用于在正和负沿触发开关元件以产生三角波信号。获取三角波信号的平均电压，并将其与比较器的三角波信号进行比较，生成占空比为50％的方波。然后，方波信号用于在正和负边沿触发以产生双频信号。因此，可以有效地克服现有技术中出现的高成本问题和方波输入信号的限制。

8. 发明授权

US08378962B2 LCD backlight driving device with an isolating transformer 失效
标题翻译：带背光驱动装置的隔离变压器
公开(公告)号：US08378962B2
公开(公告)日：2013-02-19
申请号：US12832984
申请日：2010-07-08
申请人： Cheng-Chia Hsu , Yu-Cheng Pan , Ho-Wen Chen
发明人： Cheng-Chia Hsu , Yu-Cheng Pan , Ho-Wen Chen
IPC分类号： G09G3/36
CPC分类号： H05B41/2827
摘要： An LCD backlight driving device with an isolating transformer comprises a DC power supply, a square wave generator, a square wave controller, said isolating transformer and a driver transformer; wherein said isolating transformer has a primary side connected to said square wave generator and a secondary side connected to said driver transformer, since said isolating transformer is placed between said square wave generator and said driver transformer, it helps to effectively shorten a safety distance required for setting up said driver transformer; the present invention uses said isolating transformer to shorten the safety distance required than that of using said driver transformer directly and to decrease an area in implementing a circuit board and to cut cost of said device.
摘要翻译：具有隔离变压器的LCD背光驱动装置包括直流电源，方波发生器，方波控制器，所述隔离变压器和驱动变压器; 其中所述隔离变压器具有连接到所述方波发生器的初级侧和连接到所述驱动变压器的次级侧，因为所述隔离变压器被放置在所述方波发生器和所述驱动变压器之间，所以有助于有效地缩短设置驱动变压器; 本发明使用所述隔离变压器来缩短直接使用所述驱动变压器所需的安全距离，并且减少实现电路板的面积并降低所述装置的成本。

9. 发明授权

US5905887A Clock frequency detection for computer system 失效
标题翻译：计算机系统的时钟频率检测
公开(公告)号：US5905887A
公开(公告)日：1999-05-18
申请号：US888436
申请日：1997-07-07
申请人： Shyh-Jia Wu , Ho-Wen Chen
发明人： Shyh-Jia Wu , Ho-Wen Chen
IPC分类号： G06F1/08 , G06F1/04
CPC分类号： G06F1/08
摘要： In an IBM PC/AT-compatible computer system, the frequency of the CPU bus clock signal is detected via a hardware apparatus in the I/O interface chipset. The CPU reads the hardware-detected clock frequency from an I/O register. In one embodiment, one bit of the data returned from the register indicates whether the clock frequency indicated by the remainder of the bits is valid. The CPU can trigger the hardware to autodetect the clock frequency by writing arbitrary data to the same address. The hardware clock frequency detection circuitry operates by, in response to a start signal, counting the number of cycles of the CPU clock signal which occur within a predefined number of cycles of the ISA-bus OSC signal. The start signal can be asserted in response negation of the system reset signal, or in response to a write access on the ISA bus to a predefined I/O register, or both. The clock frequency detection apparatus can include validation circuitry which asserts the validity signal only after the count is complete, and only if the count value has not exceeded a predetermined maximum count.
摘要翻译：在IBM PC / AT兼容计算机系统中，通过I / O接口芯片组中的硬件设备检测CPU总线时钟信号的频率。 CPU从I / O寄存器读取硬件检测的时钟频率。在一个实施例中，从寄存器返回的数据的一位指示由剩余位指示的时钟频率是否有效。 CPU可以通过将任意数据写入相同的地址来触发硬件自动检测时钟频率。硬件时钟频率检测电路通过响应于启动信号对在ISA-bus OSC信号的预定数量的周期内发生的CPU时钟信号的周期数进行计数来操作。起始信号可以在系统复位信号的响应否定或响应于ISA总线上对预定义的I / O寄存器的写入访问或两者兼而有之。时钟频率检测装置可以包括仅在计数完成之后且仅当计数值未超过预定最大计数时才确定有效信号的确认电路。

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