The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1987
Filed:
Aug. 22, 1984
Wallace Kirschner, Trumbull, CT (US);
Easwaran C Nambudiri, East Meadow, NY (US);
Douglas H Patterson, Norwalk, CT (US);
Pitney Bowes Inc., Stamford, CT (US);
Abstract
A method and associated apparatus is provided for protecting the accounting data stored in an electronic postage meter having multiple non-volatile memories for the storage of accounting data, including the steps of and associated apparatus for providing a first non-volatile memory; writing postage transactions accounting data into the first non-volatile memory in real time during each trip cycle of the meter; providing a second non-volatile memory; writing postage transaction accounting data into the second non-volatile memory only during the power cycle of the meter; and disabling the first non-volatile memory when the meter enters a power down cycle to prevent any further writing of data into the first non-volatile memory. Advantageously, the first non-volatile memory is clamped to ground potential during the power down cycle.