METHOD AND DEVICE FOR BUS ARBITRATION, CONVERTER AND PRODUCTION FACILITY
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Abstract
A method for bus arbitration is for use when working with multi-carrier modulation methods. Each user on a bus is assigned a unique address which identifies the user and which is transmitted upon each initiation of communication. The address is represented as a sequence of binary numerals, the number of bits of the binary numerals being equal to the number of carriers used in the multi-carrier modulation method. This sequence of binary numerals is transmitted successively for the arbitration via the multi-carrier modulation method, a user being eliminated from the arbitration when a further user at the same time has transmitted a binary numeral having higher priority. The transmission of the binary numeral may be repeated if the arbitration of the numeral does not lead to a result in one step. The method for bus arbitration may be used advantageously in a system for contactless energy supply. A redundant sending of phase-shifted signals reduces the failure rate because of random destructive interference.
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Citations
78 Claims
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1-39. -39. (canceled)
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40. A method for bus arbitration, comprising:
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assigning each user that communicates via a bus a uniquely identifying sequence of identification units, a number n of numbered bidirectional communication channels being used, the number n being greater than one; initiating, by at least one communications user, a communication; at a beginning of communication in a first time interval with respect to the communication initiation, checking, by the at least one communications user, whether a further user having a higher priority is initiating a communication, the priority being determined by comparing information sent out via the communication channels upon initiating communication and information received from the further user via the communication channels upon initiating communication, the first time interval including a plurality of time segments; in a first time segment, transmitting an identification unit by a communications user via the communication channels, and at the same time, detecting signals present on all communication channels; upon agreement of the detected signals with the transmitted identification unit, in a time segment following the first time segment, continuing, by the communications user, with a next identification unit; and after transmitting a complete identification, beginning, by the communications user, a transmission of useful data. - View Dependent Claims (74, 75, 77)
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- 41. The method according to claim 41, wherein, in response to deviation of the detected signals from the transmitted identification unit, the communications user ascertains, from the deviating detected signals, the priorities of the further communications users which have transmitted signals, and in a time segment following the current time segment, the communications user continues with a next identification unit if no user possesses a higher priority.
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49. A method for bus arbitration, a plurality of communications users being provided as bus users on a bus, each communications user being assigned a unique address as a sequence of numerals, the bus being clocked with a bus clocking, comprising:
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upon initiating communication, transmitting, by each communications user, the numerals in an order of the sequence of the address one after another for a duration of one clock-pulse segment of the bus clocking as at least one of (a) an FDM signal and (b) an OFDM signal onto the bus; at the same time, listening in to the at least one of (a) the FDM signal and (b) the OFDM signal present on the bus; and in a following clock-pulse segment, dropping out of arbitration upon determining a further communications user having an instantaneously transmitted numeral with a higher priority. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 76, 78)
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67. A device for bus arbitration, comprising:
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a plurality of communications users linked to a bus; wherein each communications user includes a device adapted for arbitration and communication on a plurality of frequency channels. - View Dependent Claims (68, 69, 70, 71, 72, 73)
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Specification