Electronically controlled franking machine

US4335434A · kind A · utility

Assignee

• Postalia GmbH · DE

Inventors

• Kurt Baumann · Villmergen, CH
• Peter Kusche · Berlin, DE
• Reinhard Redecker · Rodenbach, DE

Key dates

• Filing date: Apr 28, 1980
• Grant date: Jun 15, 1982
• Expiry date: Apr 28, 2000

Classification

• Technology area (CPC G): Physics
• CPC primary: G07B2017/00411
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Electronic control for franking machines such as postage meters and stamping machines having a printing device, a postage value printing selection device, a total postal charge storage register and a settable subtracting value counter, including a microprocessor, a volatile main memory for storing data and non-volatilesemiconductor memories for storing data and the number of writing cycles performed, the memories being connected to the microprocessor, a line voltage power supply, supply capacitors disposed in the power supply, a switch controlled by the microprocessor for connecting the non-volatile memories to the supply capacitors of the power supply exclusively in the event of an interruption of the line voltage to cause the non-volatile memories to take over data stored in the main memory, and a register connected to one of the non-volatile memories for preventing the exceeding of a predetermined number of writing cycles of the one non-volatile memory after the power supply resumes.