公开(公告)号：US3795823A

公开(公告)日：1974-03-05

申请号：US3795823D

申请日：1972-11-09

Applicant: RCA CORP

Inventor： MORGAN D ,  HEUNER R

IPC: H03K3/013 ,  H04L25/02 ,  H03K17/56

CPC classification number: H03K3/013 ,  H04L25/02

Abstract: Circuit for sensing the presence of a signal on a line preceded by noise on the line, such as noise created by switch bounce. The circuit, which includes flip-flops and logic gates, ignores noise bursts and produces only a single change in direct voltage level at the circuit output terminal, in response to a signal.

Abstract translation: 用于感测线路上存在信号的电路，其前面是线路上的噪声，例如由开关跳变产生的噪声。 包括触发器和逻辑门的电路响应于信号而忽略噪声突发并且仅在电路输出端产生直接电压电平的单一变化。

公开(公告)号：US3740717A

公开(公告)日：1973-06-19

申请号：US3740717D

申请日：1971-12-16

Applicant: RCA CORP

Inventor： HUENER R ,  NIEMIEC S ,  MORGAN D

IPC: G02F1/133 ,  G02F1/1343 ,  G04G9/00 ,  G04G9/12 ,  G09F9/30 ,  G09G3/18 ,  G09G3/36 ,  G08B5/36 ,  G02F1/28 ,  H04Q1/00

CPC classification number: G09G3/18 ,  G04G9/0047 ,  G04G9/122

Abstract: Multiplexed operation of a plurality of liquid crystal numeric indicators is achieved by applying a unipolarity, alternating exciting voltage to the backplate of a selected indicator, applying to all other backplates a unipolarity alternating voltage in a frequency range above that at which light scattering occurs, and applying to each segment of all indicators a unipolarity alternating exciting voltage which may be either in phase with or 180* out-of-phase with the exciting voltage applied to the backplate of the selected indicator.

Abstract translation: 多个液晶数字指示器的复用操作是通过将单极性交替激励电压施加到所选择的指示器的背板来实现的，向所有其它背板应用在高于发生光散射的频率范围内的单极交流电压，以及 对所有指示器的每个段应用单极性交替激励电压，其可以与施加到所选指示器的背板的激励电压同相或相差180°。