| 摘要 |
<p>An electronic coin validating arrangement wherein an entered coin is first sensed by a true coin sensor (16) and if not rejected is permitted to pass an apertured obturator (21) with which is associated an optical sensor (17). Signals generated by the two sensors are fed to control logic (30) in the form of an array of latches and a status counter which is clocked by successive changes in the output signals received from the sensors. Following each count, the actual sensor output is compared with a predicted output. Correspondence throughout the entire sequence of signals, which represent the progress of the coin along a coin feed path, is necessary in order to achieve final coin acceptance. <IMAGE></p> |
