Postal security device with display
AssigneeMicro General Corporation
InventorsJames S. Emmett, Andrew L. Rozum, Jr.
Life of this patent
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Abstract
A primary circuit has an associated parameter, and a display circuit maintains a copy of that parameter. The display circuit displays the parameter based on the copy, and updates the copy by listening in on communications between the primary circuit and an external device. In a preferred embodiment, the primary circuit is a postal security device (PSD) and the parameter is the value of the descending register of the PSD.
Claims25
An apparatus comprising:
- (a) a Postal Security Device (PSD) including a first register for storing first data representing a first parameter, wherein said PSD communicates with an external device, and modifies the contents of the first register based on a communication received from the external device;
- and
- (b) a display circuit including
- a second register for storing second data representing the first parameter, and
- a display for displaying the first parameter based on the second data stored in the second register,
- wherein said display circuit receives a communication between said PSD and the external device and modifies the contents of the second register based on the communication between said PSD and the external device.
An apparatus comprising:
- (a) a postal security device (PSD) including a first register for storing first data representing a first parameter, wherein said PSD communicates with an external device, and modifies the contents of the first register based on a communication received from the external device;
- (b) a display circuit including
- a second register for storing second data representing the first parameter, and
- a display for displaying the first parameter based on the second data stored in the second register,
- wherein said display circuit receives a communication between said PSD and the external device and modifies the contents of the second register based on the communication between said PSD and the external device;
- and
- (c) a first port for passing the communication between said PSD and the external device.
A method of determining a value of a parameter stored in a first register in a Postal Security Device (PSD), the PSD receiving a communication form an external device and modifying the contents of the first register based on the communication received from the external source, the method comprising the steps of;
- storing second data representing the first parameter in a second register;
- displaying the first parameter based on the second data stored in the second register;
- receiving a communication between the PSD and the external device;
- and
- modifying the contents of the second register based on the communication between the PSD and the external device.
Dependencies are inferred from the claim text.