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:
Jul. 18, 2006
Filed:
Aug. 14, 1997
Juergen Kockmann, Duesseldorf, DE;
Anton Kruk, Hamminkeln, DE;
Hermann-josef Terglane, Heek, DE;
Uwe Sydon, Duesseldorf, DE;
Peter Schliwa, Hamminkeln, DE;
Juergen Kockmann, Duesseldorf, DE;
Anton Kruk, Hamminkeln, DE;
Hermann-Josef Terglane, Heek, DE;
Uwe Sydon, Duesseldorf, DE;
Peter Schliwa, Hamminkeln, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a method and a device for digital data radiotransmission between a fixed station () and at least one mobile station () at one or several carrier frequencies (F, F. . . ), wherein the data is transmitted in several time slots (Z, Z. . . ) according to the time-multiplex technique. A specific amount of time is required to change from one carrier frequency to another carrier frequency using a slow-hopping HF module. The data is transmitted in an active followed by an inactive time slot during which no data is transmitted and which is sufficient for the HF module to program the frequency for the following active time slot. According to the invention, an inactive time slot is shorter than an active time slot.