公开(公告)号：US4134539A

公开(公告)日：1979-01-16

申请号：US843833

申请日：1977-10-20

申请人： Dennis Hopkinson

发明人： Dennis Hopkinson

IPC分类号： G06K7/016 ,  G06K7/08 ,  G07C9/00 ,  G06K13/06 ,  G06K19/06

CPC分类号： G06K7/016 ,  G06K7/087 ,  G07C9/00007 ,  G07C9/00738

摘要： Access control system in which a magnetically coded key or card is inserted into a reader which reads the recorded code. The key is coded by small permanent magnets embedded in non-magnetic body of key at positions on a 4 .times. 4 regular grid of possible positions. The reader includes row of 4 Hall Effect sensors adjacent keyway entrance so that the 4 rows of magnet positions pass successively across them. Signals generated in sensors are transmitted to signal storage units and extracted from the storage units on withdrawal of the key. Activation of sensors and transmission of signals is controlled by successive interruption by leading edge of key of light beams along the keyway.

摘要翻译： 存取控制系统，其中将磁性编码的钥匙或卡插入读取记录的代码的读取器中。 钥匙由嵌入非磁性体的小型永久磁铁编码，位于可能位置的4×4规则网格上的位置上。 读者包括4个霍尔效应传感器相邻的键槽入口，使4列磁体位置相继穿过它们。 在传感器中产生的信号被传送到信号存储单元并且在提取钥匙时从存储单元中提取信号。 传感器的激活和信号的传输由沿着键槽的光束的前沿的连续中断来控制。

公开(公告)号：US4256956A

公开(公告)日：1981-03-17

申请号：US119333

申请日：1980-02-07

申请人： Dennis Hopkinson

发明人： Dennis Hopkinson

IPC分类号： E05B49/00 ,  G06K7/016 ,  G06K7/08 ,  G06K7/10 ,  G07C9/00

CPC分类号： G07C9/00007 ,  G06K7/016 ,  G06K7/087

摘要： Code identification apparatus in which a magnetically coded key or like instrument is inserted into a reader which reads the code on the key. The reader has a guideway to receive the key and, adjacent the guideway, a row of code sensors disposed such that as the key is inserted into the guideway, rows of code locations on the key successively pass the row of code sensors. The reader incorporates signal processing circuitry which determines when there is an output signal from any one or more of the code sensors as a measure of time intervals during which successive rows of code locations are passing the sensors. The signals are accumulated during those time intervals and the accumulated signals registered at their conclusion.

摘要翻译： 代码识别装置，其中将磁性编码的键或类似装置插入读取钥匙中的代码的读取器中。 阅读器具有用于接收钥匙的导轨，并且在导轨相邻的一排代码传感器设置成使得当钥匙被插入到导轨中时，键上的代码位置行依次通过代码传感器行。 读取器包括信号处理电路，其确定何时存在来自任何一个或多个代码传感器的输出信号作为连续行代码位置通过传感器期间的时间间隔的量度。 这些信号在这些时间间隔期间被累积，累加的信号在其结束时被登记。