公开(公告)号：US20120176065A1

公开(公告)日：2012-07-12

申请号：US13424481

申请日：2012-03-20

Applicant: Eric Danstrom

Inventor： Eric Danstrom

IPC: H05B37/02

CPC classification number: G09G3/32 ,  G09G2320/0626

Abstract: A plurality of resistive paths are coupled in parallel to a common node. A high side driver is operable responsive to first control signals to selectively supply current to certain ones of the resistive paths. A low side driver, including a plurality of selectively actuated current sink paths, is provided to sink current from the common node. A control logic circuit actuates a current sink path within the low side driver for each resistive path that is selectively supplied current by the high side driver. A substantially constant low side voltage drop through these sink paths is provided regardless of the number of resistive paths that are supplied current by the high side driver. A switched high side and low side configuration operating in an analogous way is also disclosed.

Abstract translation: 多个电阻路径并联耦合到公共节点。 高侧驱动器可响应于第一控制信号而操作以选择性地向某些电阻路径提供电流。 提供包括多个选择性致动的电流吸收通路的低侧驱动器以从公共节点吸收电流。 控制逻辑电路为每个电阻路径驱动低侧驱动器内的电流吸收通道，该电阻通路被高侧驱动器选择性地供电。 无论高侧驱动器提供电流的电阻路径的数量如何，均提供通过这些汇流道的基本上恒定的低侧电压降。 还公开了以类似方式操作的切换的高侧和低侧配置。

公开(公告)号：US20060227070A1

公开(公告)日：2006-10-12

申请号：US11100044

申请日：2005-04-06

Applicant: Eric Danstrom

Inventor： Eric Danstrom

IPC: G09G3/14

CPC classification number: G09G3/32 ,  G09G2320/0626

Abstract: A plurality of grids of LED segments form an LED array. Each grid includes a plurality of LED segments connected in a common cathode configuration at a common cathode node. A high side driver is connected to all of the plurality of grids. This high side driver is operable responsive to segment control signals to selectively supply current to certain LED segments. One low side driver is provided for each of the plurality of grids. Each low side driver is responsive to a grid control signal to make a grid selection and sink current from the common cathode node of its corresponding selected grid of LED segments. A plurality of selectively actuated current sink paths are provided in each low side driver. A control logic circuit actuates a current sink path within the low side driver for each LED segment that is selectively supplied current by the high side driver. A substantially constant low side voltage drop through these sink paths is provided regardless of the number of LED segments that are supplied current by the high side driver so as to achieve a substantially constant LED segment brightness. A common anode configuration operating in an analogous way is also disclosed.

Abstract translation: 多个LED段的栅格形成LED阵列。 每个栅格包括在公共阴极节点处以公共阴极配置连接的多个LED段。 高侧驱动器连接到所有多个网格。 该高侧驱动器响应于段控制信号而可操作地选择性地向某些LED段提供电流。 为多个网格中的每一个提供一个低侧驱动器。 每个低侧驱动器响应于电网控制信号以从其相应的所选LED段格栅的公共阴极节点进行网格选择和吸收电流。 在每个低侧驱动器中设置有多个选择性致动的电流槽路径。 控制逻辑电路为每个LED段致动低侧驱动器内的电流吸收通路，每个LED段由高侧驱动器选择性供电。 无论高侧驱动器为电流提供的LED段的数量如何，都提供通过这些汇流通路的基本恒定的低侧电压降，以实现基本恒定的LED段亮度。 还公开了以类似方式操作的常见阳极配置。

公开(公告)号：US20090196076A1

公开(公告)日：2009-08-06

申请号：US12023236

申请日：2008-01-31

Applicant: Eric Danstrom ,  John S. Lo Giudice

Inventor： Eric Danstrom ,  John S. Lo Giudice

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0009 ,  H02M2001/0064

Abstract: A power supply circuit includes: a switching flyback transformer having a primary winding and a secondary winding; a current transformer having a primary winding and a secondary winding; and a switching transistor have a conduction path and a control terminal. The primary winding of the switching flyback transformer, the primary winding of the current transformer and the conduction path of the switching transistor are coupled together in a series circuit. The switching flyback transformer and the current transformer share a common core. The windings of the switching flyback transformer may be wound around one leg of the common core, while the windings of the current transformer may be wound around a different leg of the common core.

Abstract translation: 电源电路包括：具有初级绕组和次级绕组的开关回扫变压器; 电流互感器，其具有初级绕组和次级绕组; 开关晶体管具有导通路径和控制端子。 开关回扫变压器的初级绕组，电流互感器的初级绕组和开关晶体管的导通路径以串联电路耦合在一起。 开关回扫变压器和电流互感器共享一个共同的核心。 开关回扫变压器的绕组可以缠绕在公共芯的一条腿上，而电流互感器的绕组可以缠绕在公共芯的不同的腿上。

公开(公告)号：US08248325B2

公开(公告)日：2012-08-21

申请号：US13424481

申请日：2012-03-20

Applicant: Eric Danstrom

Inventor： Eric Danstrom

IPC: G09G3/14

CPC classification number: G09G3/32 ,  G09G2320/0626

Abstract: A plurality of resistive paths are coupled in parallel to a common node. A high side driver is operable responsive to first control signals to selectively supply current to certain ones of the resistive paths. A low side driver, including a plurality of selectively actuated current sink paths, is provided to sink current from the common node. A control logic circuit actuates a current sink path within the low side driver for each resistive path that is selectively supplied current by the high side driver. A substantially constant low side voltage drop through these sink paths is provided regardless of the number of resistive paths that are supplied current by the high side driver. A switched high side and low side configuration operating in an analogous way is also disclosed.

Abstract translation: 多个电阻路径并联耦合到公共节点。 高侧驱动器可响应于第一控制信号而操作以选择性地向某些电阻路径提供电流。 提供包括多个选择性致动的电流吸收通路的低侧驱动器以从公共节点吸收电流。 控制逻辑电路为每个电阻路径驱动低侧驱动器内的电流吸收通道，该电阻通路被高侧驱动器选择性地供电。 无论高侧驱动器提供电流的电阻路径的数量如何，均提供通过这些汇流道的基本上恒定的低侧电压降。 还公开了以类似方式操作的切换的高侧和低侧配置。

公开(公告)号：US08203506B2

公开(公告)日：2012-06-19

申请号：US11100044

申请日：2005-04-06

Applicant: Eric Danstrom

Inventor： Eric Danstrom

IPC: G09G3/14

CPC classification number: G09G3/32 ,  G09G2320/0626

Abstract: An LED array includes a plurality of LED segments connected in a common cathode configuration at a common cathode node. A high side driver is operable responsive to segment control signals to selectively supply current to certain LED segments. A low side driver is provided to sink current from the common cathode node. A plurality of selectively actuated current sink paths are provided in each low side driver. A control logic circuit actuates a current sink path within the low side driver for each LED segment that is selectively supplied current by the high side driver. A substantially constant low side voltage drop through these sink paths is provided regardless of the number of LED segments that are supplied current by the high side driver so as to achieve a substantially constant LED segment brightness. A common anode configuration operating in an analogous way is also disclosed.

Abstract translation: LED阵列包括在公共阴极节点处以公共阴极配置连接的多个LED段。 高侧驱动器响应于段控制信号而可操作以选择性地向某些LED段提供电流。 提供低边驱动器以从公共阴极节点吸收电流。 在每个低侧驱动器中设置有多个选择性致动的电流槽路径。 控制逻辑电路为每个LED段致动低侧驱动器内的电流吸收通路，每个LED段由高侧驱动器选择性供电。 无论高侧驱动器为电流提供的LED段的数量如何，都提供通过这些汇流通路的基本恒定的低侧电压降，以实现基本恒定的LED段亮度。 还公开了以类似方式操作的常见阳极配置。