Abstract: The invention relates to a tissue marker (1, 1?) for marking a lesion (16) in the body tissue (6). The invention is characterized in that the tissue marker (1, 1?) comprises a transponder (2). The transponder (2) can be activated by electromagnetic radiation (8) in such a manner that the transponder (2) emits a localization signal (9) in the form of electromagnetic radiation by means of which the position of the tissue marker (1, 1?) in the body tissue (6) can be detected. The invention further relates to a system for determining the position of such a tissue marker (1, 1?) and to the use of an RFID tag as a tissue marker (1, 1?) for marking a lesion (16) in the body tissue. According to an advantageous embodiment of the invention, the tissue marker (1, 1?) is biodegradable.

Abstract: The invention relates to a method for determining the spatial position and/or orientation of an object (1) marked by means of at least one transponder (2, 2?), wherein the transponder (2, 2?) receives a query signal emitted by a transmitting device (3) and is excited thereby in order to emit a locating signal, wherein the locating signal is received by means of at least one receiving device (5) and is analyzed by means of an evaluating device (7) to determine the position. The object of the present invention is to provide a method that is improved in terms of practicability and above all in terms of precision in determining a position. For this purpose, the transmitting device (3) inventively emits the query signal intermittently, wherein the receiving device (5) receives at least the locating signal emitted by the transponder (2, 2?) during the transmission pauses of the transmitting device (3) and the evaluating device (7) determines the position is therefrom.

Abstract: The invention relates to a method for detecting motion (“Motion Capture”), wherein markers (2) are put onto an object (1), the physical positions of the markers are detected and digitized, with the motion of the object (1) being recorded by means of a computer (3) using the chronologically variable digital position data. It is an object of the invention to improve a method of this kind. To this end, the invention proposes that the markers (2) comprise a respective transponder which is activated by electromagnetic radiation (5), specifically such that the transponder emits a location signal as electromagnetic radiation (6), the signal being used to detect the position of the respective marker (2).

Abstract: The invention relates to a system for determining the spatial position and/or orientation of a medical instrument (1), comprising a transmission unit (3) for transmitting electromagnetic radiation (4), at least one localisation element (2) that is arranged on the medical instrument (1) and which captures the electromagnetic radiation (4) transmitted by the transmission unit (3) and produces a localisation signal (5), and an evaluation unit (9) which determines the position and/or orientation of the medical instrument (1) by evaluating the localisation signal (5). The invention is characterised in that the localisation element (2) has a transponder that comprises an antenna (13) and a circuit (12) that is connected to the antenna (13). The circuit (12) can be excited by the electromagnetic radiation (4) of the transmission unit (3) captured by the antenna (13), such that the transmission unit emits, via the antenna (13), the localisation signal (5) as electromagnetic radiation.

Abstract: The invention relates to a method for providing internet addresses that contain special characters. When an internet address is called up by a user on a computer, a first domain Name Server (DNS) is contacted. Said server is associated with at least one further DNS to which an internet protocol address that cannot be identified by the first DNS or only partially is forwarded decrypted by analyzing a sequential relational operation and transferred back to the user as a known numeric key (IP address).