公开(公告)号：WO1982000535A1

公开(公告)日：1982-02-18

申请号：PCT/US1981000962

申请日：1981-07-16

Applicant: NCR CORP

Inventor： NCR CORP ,  DEVCHOUDHURY R

IPC: G06F13/00

CPC classification number: G06F12/1433

Abstract: Apparatus for controlling the operation of a memory device (34) is effective to prevent unauthorized utilization of the memory device (34) upon removal thereof. A memory energizing signal (84) is delayed, the delayed signal being provided to logic means which produces an enabling signal (113) for the memory device (34) if the delayed signal (84) occurs during a predetermined time period determined by a control signal (100) produced in dependence on the energizing signal (84).

Abstract translation: 用于控制存储装置（34）的操作的装置有效地防止存储装置（34）在其移除时的未经授权的使用。 存储器激励信号（84）被延迟，延迟的信号被提供给逻辑装置，如果在由控制器确定的预定时间段期间发生延迟信号（84），则产生用于存储器件（34）的使能信号（113） 根据激励信号（84）产生的信号（100）。

公开(公告)号：WO1980000628A1

公开(公告)日：1980-04-03

申请号：PCT/US1979000714

申请日：1979-09-06

Applicant: NCR CORP

Inventor： NCR CORP ,  DEVCHOUDHURY R

IPC: G06K07/14

CPC classification number: G06K7/10881 ,  G06K2207/1018

Abstract: An optical data sensing system includes an optical wand (14) adapted to optically sense a record member containing data encoded in a bar code, and a reading circuit (20) for decoding the sense data for transmission to a computer (26). A power source (30) is coupled via a switch (36) to the wand (14) and the reading circuit (20). A control circuit is effective to operate the switch (36) periodically to determine whether the wand (14) is sensing the record medium. When the wand (14) is sensing the coded data, control signals are provided to operate the switch (36) for at least a predetermined time such that the reading circuit (20) can process the sensed data. An economy in power supply is achieved.

Abstract translation: 光学数据感测系统包括适于光学感测包含以条形码编码的数据的记录构件的光学棒（14），以及用于解码用于传输到计算机（26）的感测数据的读取电路（20）。 电源（30）经由开关（36）耦合到棒（14）和读取电路（20）。 控制电路有效地周期性地操作开关（36），以确定魔杖（14）是否感测记录介质。 当棒（14）感测编码数据时，提供控制信号以操作开关（36）至少预定的时间，使得读取电路（20）可以处理感测的数据。 实现电力供应经济。