Electronic postage meter reset circuit

Details Electronic postage meter reset circuit Electronic postage meter reset circuit

1982-10-13

1985-10-15

Krass, Errol A.

Boots, shoes, and leggings

364466, 364900, G06F 100

Patent

active

045478538

ABSTRACT:
A reset circuit for an electronic postage meter controls the operation of the reset line of the meter's computing system. The reset circuit operates in conjunction with a non-volatile memory protection circuit. The inter-relation of the reset circuit and non-volatile memory protection circuit protects against the possible loss of postage funds due to spurious data being written into the non-volatile memory. The reset circuit operation is controlled in part by the voltage levels applied to the non-volatile memory. This insures that the reset to the electronic postage meter computing system is released during power-up of the meter after proper voltage levels have applied to the user's non-volatile memory and reestablished during low power or power-down conditions.

REFERENCES:
patent: 4131942 (1978-12-01), Gillett et al.
patent: 4285050 (1981-08-01), Muller
patent: 4301507 (1981-11-01), Soderberg et al.
patent: 4302821 (1981-11-01), Eckert et al.

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