Internal postage meter machine interface circuit

Details Internal postage meter machine interface circuit Internal postage meter machine interface circuit

1995-12-06

1998-01-20

Cosimano, Edward R.

Boots, shoes, and leggings

364514B, 364550, 39520007, 39520014, 395309, 395310, G06F 1310, G06F 306, G07B 1700, H04L 1202

Patent

active

057107211

ABSTRACT:
An internal postage meter machine interface circuit is equipped with transmission and reception registers for storing data transmitted parallel and with a shift register for serial-to-parallel or parallel-to-serial conversion of transmitted data within an actuator/sensor control. Data are communicated serially between the meter and a register unit in the base. Sensors and actuators of the base are connected to the register unit. Sensor signals are shifted into the shift register of the actuator/sensor controller and are present therein so as to be fetchable in parallel. A sensor status register group for parallel data of the sensor signals of at least one sensor is provided as a reception register. At least one sensor status register and at least one interrupt control register are connected to a watchdog circuit in order to monitor the received bits of the sensor signals for status change in order to trigger an interrupt to the control unit, as warranted.

REFERENCES:
patent: 4746234 (1988-05-01), Harry
patent: 4866421 (1989-09-01), Szczepanek
patent: 5199105 (1993-03-01), Michael
patent: 5267172 (1993-11-01), Vermesse
patent: 5283744 (1994-02-01), Abumehdi et al.
patent: 5374926 (1994-12-01), Szczepanek
patent: 5455700 (1995-10-01), Thompson et al.

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