Arrangement for the power supply for a security domain of a device
AssigneeFrancotyp-Postalia GmbH
InventorsOlaf Turner, Dirk Rosenau, Torsten Schlaaff
Life of this patent
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Abstract
In an arrangement for the power supply for a security domain of a device, a first battery is connected to a first input of a battery switchover device in the security region and a second battery is arranged in a non-security region of the device housing and is connected to a second input of the battery switchover device. The battery switchover device is coupled to a monitoring unit in the security region of the device. The monitoring unit is preferably composed of an analog-to-digital converter and a module processor for the evaluation of the connected battery voltages.
Claims13
An electronic device comprising:
- a security region containing a plurality of security components;
- a first battery disposed in said security region for supplying power to said security components;
- a second battery disposed outside of said security region for serving as a back-up to said first battery;
- a battery switchover device having a first input connected to said first battery and a second input connected to said second battery for switching power supply to said security components;
- and
- a monitoring unit disposed in said security region and connected to said battery switchover device for evaluating voltage information associated with at least one of a voltage of said first battery and a voltage of said second battery.
Dependencies are inferred from the claim text.