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1. 发明授权

US4234920A Power failure detection and restart system 失效
标题翻译：电源故障检测和重启系统
公开(公告)号：US4234920A
公开(公告)日：1980-11-18
申请号：US963315
申请日：1978-11-24
申请人： Bradford O. Van Ness , Dan G. Weimer
发明人： Bradford O. Van Ness , Dan G. Weimer
IPC分类号： G01R19/165 , G06F1/24 , G06F1/30 , G06F11/14 , G06F11/00 , G11C7/02
CPC分类号： G01R19/16538 , G06F1/24 , G06F1/30 , G06F11/1417 , G06F11/1441
摘要： A power failure detection and restart system for use with a microprocessor (microcomputer) control system includes first and second cascaded voltage comparators, the first of which responds to a drop in the supply voltage supplied to the microprocessor to produce an output pulse causing a software freeze of the microprocessor. The microprocessor operates in response to the software freeze pulse to transfer the contents of certain registers thereof to a battery protected memory for temporary storage therein. A positive feed-back circuit is used on the first voltage comparator to insure its rapid and complete change of state; and this change of state signal is applied through a time delay circuit to the second voltage comparator, which produces an output signal a predetermined time after the software freeze pulse is obtained from the first voltage comparator to reset the microprocessor to an initial circuit condition. Built in hysteresis in the system is employed; so that when the power once again rises above the level sufficient to properly operate the system, the first and second voltage comparators are turned on in the same sequence they were turned off to re-establish operation of the microprocessor which picks up its routine at the point the interruption took place.
摘要翻译：与微处理器（微机）控制系统一起使用的电源故障检测和重启系统包括第一级和第二级联电压比较器，其中第一级电压比较器响应供给微处理器的电源电压的下降以产生导致软件冻结的输出脉冲的微处理器。微处理器响应于软件冻结脉冲操作，以将其某些寄存器的内容传送到电池保护的存储器中，用于临时存储。在第一电压比较器上使用正反馈电路，以确保其快速和完全的状态变化; 并且该状态信号的改变通过时间延迟电路施加到第二电压比较器，其在从第一电压比较器获得软件冻结脉冲之后的预定时间产生输出信号，以将微处理器复位到初始电路状态。内置滞后系统; 使得当电源再次上升到高于足以正常操作系统的电平时，第一和第二电压比较器以与它们关闭的相同的顺序接通，以重新建立微处理器的操作，微处理器在指出中断发生。

2. 发明授权

US4296315A Card reader security system 失效
标题翻译：读卡器安全系统
公开(公告)号：US4296315A
公开(公告)日：1981-10-20
申请号：US30308
申请日：1979-04-16
申请人： Dan G. Weimer , Bradford O. Van Ness
发明人： Dan G. Weimer , Bradford O. Van Ness
IPC分类号： G06K7/08 , G06K19/06 , G06K7/10
CPC分类号： G06K7/088 , G06K19/06187
摘要： A punched card reader for use in systems such as bulk fuel terminal dispensing systems, automated unattended bank teller machines and the like includes security provisions to prevent operation of such systems by counterfeit cards. Specifically, the system operates with a punched card made of laminated plastic or the like having a rectangular plate made of magnetic material sandwiched between the card layers. This plate is located in an area of the card adjacent the portion encoded with the variable data uniquely identifying the card and the controlling its function, etc. The card entry throat of the tape reader is modified to have a pair of spaced-apart, magnetically actuated reed switches on one side of the card entry slot. On the opposite side of the card entry slot a pair of corresponding permanent magnets are located. The magnets have a field strength sufficient to operate the magnetic reed switches; so that when no card is inserted into the reader, or when a card not having the magnetic shield in it is inserted into the reader, the reader cannot operate. When a card having the magnetic shield in it is inserted fully into the reading position of the reader, the magnetic shield breaks the magnetic field used to actuate the reed switches, and they change operating state. This state of operation is used in a control circuit, along with the conventional card sensing switch, to enable the reader for operation.
摘要翻译：用于诸如散装燃料终端分配系统，自动化无人值守银行柜员机等系统的冲孔读卡器包括防止这种系统通过伪钞卡进行操作的安全设置。具体地说，该系统使用具有夹在卡层之间的由磁性材料制成的矩形板的层压塑料等制成的穿孔卡。该板位于卡片的邻近部分的区域，该部分用可变数据编码，唯一地识别卡片并控制其功能等。带读取器的卡片入口喉部被修改为具有一对间隔开的磁性卡入口槽一侧的启动簧片开关。在卡片入口槽的相对侧，设有一对相应的永久磁铁。磁体具有足以操作磁簧开关的场强; 使得当读卡器中没有插入卡时，或当其中没有磁屏蔽的卡被插入读取器时，读取器不能操作。当其中具有磁屏蔽的卡被完全插入读取器的读取位置时，磁屏蔽断开用于致动簧片开关的磁场，并且它们改变操作状态。这种操作状态与传统的卡检测开关一起用于控制电路中，以使读取器能够操作。

3. 发明授权

US4273996A Sequential card reader system 失效
标题翻译：顺序读卡器系统
公开(公告)号：US4273996A
公开(公告)日：1981-06-16
申请号：US051988
申请日：1979-06-25
申请人： Dan G. Weimer
发明人： Dan G. Weimer
IPC分类号： G07F7/12 , G06K7/00 , G06K5/00
CPC分类号： G07F7/08 , G07F7/12
摘要： A card reader having a limited capacity for use with digitally encoded cards is used in conjunction with a system requiring a greater amount of information than is encoded on a single card. A multiple stage buffer storage memory is placed between the card reader and the utilization system. The memory has specific memory locations corresponding to locator data which is uniquely encoded on each of the different cards of a set of cards employed to supply the necessary information to the utilization system. A data locator is connected between the card reader and the buffer storage means and is responsive to locator data read from the cards by the reader to direct the information data on the cards to the proper location in the buffer storage memory. The cards may be inserted into the reader in any order; and when all of the areas of the buffer storage memory have the necessary data encoded in them, the information is transferred from the buffer storage memory to the utilization system.
摘要翻译：与数字编码卡一起使用的能力有限的读卡器与需要比编码在单个卡上的信息量更大的系统结合使用。在读卡器和利用系统之间放置多级缓冲存储器。存储器具有对应于定位器数据的特定存储器位置，该定位器数据被唯一编码在用于向使用系统提供必要信息的一组卡的不同卡的每个上。数据定位器连接在读卡器和缓冲存储装置之间，并且响应于读卡器从卡读取的定位器数据将卡上的信息数据引导到缓冲存储存储器中的适当位置。卡片可以任何顺序插入阅读器; 并且当缓冲存储存储器的所有区域具有在其中编码的必要数据时，该信息从缓冲存储存储器传送到利用系统。

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