H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/36, 379/75,
H04M 17/02 (2006.01)
Patent
CA 1105627
A. Zarouni 25 TELEPHONE STATION COIN MEMORY AND CONTROL SYSTEM Abstract of the Disclosure Automatic coin telephone station and central office facilities are disclosed for deriving data on the exact numbers and types of coins deposited during initial and overtime periods. Each station is equipped with nickel, dime and quarter binary counter memories and with flip-flop and logic gating control circuitry which is responsive to interrogate, coin collect and return signals received from the central office for sequentially interrogating the memories and frequency shift keying the stored information to the central office. A coin processor and memory, preference and connector, interrogate tone generator, and detectors are integrated into the central office switching system. The latter facilities are activated by a coin supervisory circuit during initial and overtime periods to identify the calling station, to interrogate its coin memories for initial and overtime deposits, and then to store the actual coin denominations for subsequent retrieval and correlation in connection with coin box fill determinations and collection scheduling. A Traffic Service Position System with automatic coin telephone service arrangements is furnished with match circuitry for checking actual coin deposits and guarding against coin call fraud with "red-box" devices.
307463
Kirby Eades Gale Baker
Western Electric Company Incorporated
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