公开(公告)号：US5847515A

公开(公告)日：1998-12-08

申请号：US742771

申请日：1996-11-01

申请人： John K. Lee ,  David A. Cathey

发明人： John K. Lee ,  David A. Cathey

IPC分类号： G09G3/20 ,  G09G3/22 ,  H01J31/12

CPC分类号： G09G3/2011 ,  G09G3/22 ,  H01J31/127 ,  G09G2300/08 ,  G09G2320/0606 ,  G09G2320/0626

摘要： A field emission display includes a display screen and a cathodoluminescent coating disposed on a conductive inner surface of the display screen. An extraction grid is disposed a predetermined distance away from the inner surface and has a plurality of openings. A plurality of emitters are each aligned with a corresponding one of the openings and are arranged in sets that include at least one emitter. A plurality of emitter driver circuits are each coupled to the emitters in a corresponding one of the sets. Each of the driver circuits receives a control signal having first and second values. The drive circuits drive the emitters such that the display screen displays an image having a first brightness level when the control signal has the first value, and drives the emitters such that the display screen displays an image having a second brightness level when the control signal has the second value. The ratio of the second brightness level to the first brightness level is significantly greater than the ratio of the second value of the control signal to the first value. In one aspect of the invention, each of the driver circuits includes an impedance element that has a nonlinear current-voltage characteristic to give the described ratios.

摘要翻译： 场发射显示器包括显示屏和设置在显示屏的导电内表面上的阴极发光涂层。 提取格栅布置成离开内表面预定距离并且具有多个开口。 多个发射器各自与对应的一个开口对准，并且被设置成包括至少一个发射器的组。 多个发射极驱动电路各自耦合到相应的一组中的发射器。 每个驱动电路接收具有第一和第二值的控制信号。 驱动电路驱动发射器，使得当控制信号具有第一值时，显示屏幕显示具有第一亮度级别的图像，并且驱动发射器，使得当控制信号具有第二亮度级别时，显示屏幕显示具有第二亮度级别的图像 第二个值。 第二亮度水平与第一亮度水平的比率显着大于控制信号的第二值与第一值的比值。 在本发明的一个方面中，每个驱动电路包括一个阻抗元件，该阻抗元件具有非线性电流 - 电压特性以给出所述的比率。

公开(公告)号：US4848305A

公开(公告)日：1989-07-18

申请号：US182202

申请日：1988-04-15

申请人： John K. Lee

发明人： John K. Lee

IPC分类号： F02P7/02 ,  F02P15/08

CPC分类号： F02P7/028 ,  F02P15/08 ,  F02P7/021 ,  F02P7/022

摘要： A dual ignition system is disclosed wherein adjacent first and second current interrupter means are provided for each cylinder on the ignition timing means for an internal combustion engine to furnish successive sparks during the power stroke by means of first and second distributor rotor arms which are secured in a fixed angular relationship to each other and which rotate in synchronism with the timing means to thereby more completely ignite the combustibles in said cylinder.

摘要翻译： 公开了一种双点火系统，其中相邻的第一和第二电流断续器装置被设置用于内燃机的点火正时装置上的每个气缸，以在动力冲程期间通过第一和第二分配器转子臂提供连续的火花，所述第一和第二分配器转子臂被固定在 彼此固定的角度关系，并且与定时装置同步地旋转，从而更完全地点燃所述气缸中的可燃物。