发明授权
US5274218A Magnetic recording method and circuit for toll road ticket 失效
收费公路票的磁记录方法及电路

Magnetic recording method and circuit for toll road ticket
摘要:
A method for reading information from a toll road ticket in which a mark indicating magnetic recording density is formed on a ticket and is detected. A magnetic record demodulating circuit is selected in accordance with the result of detection. Further, a conversion method for increasing a recording capacity of a ticket is provided.
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