# US 7,466,791 B2 · Data transmission system for computer tomographs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,466,791 B2 - Document ID: US7466791B2 - Status: Granted - Kind: B2 - Application number: 11/382,854 - Filed: 2006-05-11 - Published: 2006-11-16 - Granted: 2008-12-16 - Earliest claimed: 2005-05-12 - Assignees: Schleifring und Apparatebau GmbH - Inventors: Nils Krumme - Web page: https://patentgrep.com/patent/US7466791B2 ## CPC - A61B 6/56: {Details of data transmission or power supply, e.g. use of slip rings} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; and the stationary part comprises at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; is improved to reduce radiation of high-frequency signals. ## Claims ### Claim 1 Device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises: at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; wherein the stationary part comprises: at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; and wherein a resonance frequency of at least one of the rotating part and the conductor structure, and a spectral distribution of data of the at least one transmitter, are matched to each other. ### Claim 2 (depends on 1) Device according to claim 1, wherein the resonance frequency of at least one of the rotating part and the conductor structure are dimensioned to be within a frequency range in which high-frequency energy emitted by the at least one transmitter has a minimum value. ### Claim 3 (depends on 1) Device according to claim 1, wherein regions in the vicinity of the conductor structure comprise a dielectric. ### Claim 4 (depends on 1) Device according to claim 1, wherein a length of the conductor structure is dimensioned to correspond to approximately a whole-number multiple of one half of a wavelength of a predetermined frequency in which preferably high-frequency energy emitted by the at least one transmitter has a minimum value. ### Claim 5 (depends on 1) Device according to claim 1, wherein a length of the conductor structure with short-circuited conductor ends is dimensioned to correspond to approximately a whole-number multiple of a quarter of a wavelength of a predetermined frequency in which preferably high-frequency energy emitted by the at least one transmitter has a minimum value. ### Claim 6 Device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises: at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; wherein the stationary part comprises: at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; and wherein at least one of a dielectric and ferromagnetic material that is attended by losses is provided to be at least one of laterally of and below the conductor structure. ### Claim 7 Device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises: at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; wherein the stationary part comprises: at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; and wherein ends of the conductor structure are interconnected so as to be attended by losses, in particular with an ohmic resistance. ### Claim 8 Device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises: at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; wherein the stationary part comprises: at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; and wherein a transmission signal of the at least one transmitter is folded with a bit sequence that is selected so that its spectrum corresponds to a given transmission spectrum. ### Claim 9 Device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises: at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; wherein the stationary part comprises: at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; wherein at least one absorber antenna for absorbing undesired interference is provided in a vicinity of the conductor structure. ### Claim 10 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas is designed as a closed conductor loop, and is preferably attended by losses. ### Claim 11 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas is designed to be optionally round or rectangular. ### Claim 12 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas comprises at least one material that is attended by losses. ### Claim 13 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas comprises at least one attenuating resistor. ### Claim 14 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas comprises at least one of a series inductance and a series capacity. ### Claim 15 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas comprises at least one of a parallel inductance and a parallel capacity to a common ground. ### Claim 16 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas is tuned to a predetermined frequency. ### Claim 17 (depends on 9) Device according to claim 9, wherein a plurality of absorber antennas are tuned to a plurality of predetermined frequencies. ### Claim 18 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas is configured to be of rectangular shape, and side lengths are whole-number multiples of λ/8 of a frequency to be attenuated. ### Claim 19 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas is configured to be of circular shape, and a circumference is a whole-number multiple of λ/8 of a frequency to be attenuated. ### Claim 20 (depends on 9) Device according to claim 9, wherein at least one of the absorber antennas comprises a plurality of windings.