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Featured researches published by Volker Timm.


international symposium on advanced research in asynchronous circuits and systems | 2000

Applying asynchronous circuits in contactless smart cards

Jozef L. W. Kessels; T. Kramer; G. den Besten; A. Peeters; Volker Timm

We have designed an asynchronous chip for contactless smart cards. Asynchronous circuits have two power properties that make them very suitable for contactless devices: low average power and small current peaks. The fact that asynchronous circuits operate over a wide range of the supply voltage, while automatically adapting their speed has been used to obtain a circuit that is very resilient to voltage drops while giving maximum performance for the power being received. The asynchronous circuit has been built, tested and evaluated and the results were so convincing that, based on the circuits presented, a product is being designed.


Archive | 1993

Datacarriers with separate storage of read and write-inhibited memory locations

Steffen Drews; Wolfgang Tobergte; Volker Timm; Klaus Dr. Axer


Archive | 1994

Method of and circuit arrangement for checking a smart card

Dirk Armbrust; Holger Brechtel; Volker Timm


Archive | 1996

Verfahren zum Betrieb eines Systems aus einer Basisstation und einem damit kontaktlos gekoppelten Transponders sowie dafür geeignetes System

Volker Timm; Dirk Armbrust; Gerwin Heyer; Siegfried Dr Ritter


Archive | 1993

Method and circuit arrangement for testing a credit card

Dirk Armbrust; Holger Brechtel; Volker Timm


Archive | 1997

OPERATING METHOD FOR SYSTEM CONSISTING OF BASE STATION AND RESPONDER AND SYSTEM PROPER TO THE METHOD

Dirk Armbrust; Gerwin Heyer; Siegfried Dr Ritter; Volker Timm; ティム ヴォルカー; ヘイヤー ゲルウィン; リター ジークフリート; アルムブラスト ディルク


Archive | 2005

Arrangement for identifying persons

Volker Timm; Thomas Wille


Archive | 1997

Method and system for operating a system composed of a base station and a contactless coupled transponder

Volker Timm; Dirk Armbrust; Gerwin Heyer; Siegfried Dr Ritter


Archive | 1999

Mobile data carrier with data-independent supply current and voltage

Gerrit Willem Den Besten; Jozef L. W. Kessels; Volker Timm


Archive | 1992

Verfahren zum steuern des zugriffs auf einen speicher sowie anordnung zur durchfuehrung des verfahrens

Steffen Drews; Volker Timm; Volker Dr. Tobergte; Klaus Dr. Axer

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