公开(公告)号：US4074079A

公开(公告)日：1978-02-14

申请号：US692208

申请日：1976-06-02

申请人： Edward M. Prell ,  Barry W. Rogers

发明人： Edward M. Prell ,  Barry W. Rogers

IPC分类号： G07F9/08 ,  H04M17/02 ,  H04M17/00

CPC分类号： H04M17/023 ,  G07F9/08

摘要： This invention relates to coin-operated telephones and apparatus for preventing the accidental or fraudulent simulation of coin deposit signals. At the beginning of each coin call or overtime period, a coding algorithm is randomly chosen at the coin station and the identity of the chosen algorithm is transmitted over the telephone line to a receiving telephone office. For each coin deposited, the coin station generates accumulated coin deposit information, codes it in accordance with the chosen algorithm and then transmits the coded accumulated deposit information to the telephone office. The office decodes the received information in accordance with the chosen algorithm identity information previously received at the telephone office to ascertain the amount deposited at the coin station.

摘要翻译： 本发明涉及投币式电话机和装置，用于防止硬币存入信号的意外或欺骗性仿真。 在每个硬币通话或超时期间开始，在硬币台随机选择一个编码算法，并通过电话线将所选算法的身份传送到接收电话局。 对于每个沉积的硬币，硬币站产生累积的硬币存款信息，并根据所选择的算法对其进行编码，然后将编码的累积存款信息发送到电话局。 办公室根据先前在电话局接收的算法身份信息，对收到的信息进行解码，以确定在硬币台上存放的金额。