Circuit for a data carrier, which circuit can be switched from an energy-saving processing mode to a normal-consumption processing mode

Abstract

Provided in a circuit ( 8 ) for a data carrier ( 7 ) are a circuit part ( 12 ), which requires a relatively large amount of energy, and at least part of a contact interface ( 11 ) via which the circuit part ( 12 ) can be supplied with electrical energy, which circuit part ( 12 ) is designed to process data signals (DS 1, DS 2 ) in a normal-consumption processing mode and in an energy-saving processing mode in which less energy is required than in the normalconsumption processing mode, and which circuit part ( 12 ) can be switched into the energysaving processing mode when energy is being supplied via the contact interface ( 11 ) and which circuit part ( 12 ) can be switched, with the aid of a first mode change signal (MC 1 ) that can be fed thereto, from the energy-saving processing mode into the normal-consumption processing mode, and further provided in this circuit ( 8 ) is at least part of a contactless interface ( 23 ) via which a carrier signal (TS) can be received by the circuit ( 8 ), and furthermore provided in this circuit ( 8 ) is a mode change signal generation stage ( 24 ) which is designed to detect receipt of the carrier signal (TS) via the contactless interface ( 23 ) and, upon detection of the receipt of the carrier signal (TS), to generate and output the first mode change signal (MC 1 ) to the circuit part ( 12 ).

Description

[0001] Circuit for switching from energy saving processing mode to standard consumption processing mode technical field [0002] The invention relates to a circuit for a data carrier, the circuit having terminals connected to at least one part of a contact interface, wherein a circuit part of the circuit can be supplied with electrical energy by means of the contact interface, the circuit having a The circuit parts that process data signals in the standard consumption processing mode as well as in the energy saving processing mode, wherein less energy is required in the energy saving processing mode compared with the standard consumption processing mode, in addition, said circuit parts can also be supplied via the contact interface switching to an energy-saving processing mode when energy is available, and the circuit portion can be switched from the energy-saving processing mode to the standard consumption processing mode by means of a first mode change signal fed thereto, and...

AI Technical Summary

Problems solved by technology

[0007] For known data carriers, there is a problem in that the wake-up from an energy-saving processing mode into a standard-consuming processing mode can only be done by communication via a contact interface, so that when using a contactless interface - as e.g. Part of the electronic travel ticket system - when contactless communication with the reading station is possible, manual interaction by the user with the mobile phone is always required, such as pressing a key to wake up the microcontroller from sleep mode, for example Say, in said reading station, the travel ticket is debited from or credited to the SIM

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