Circuit arrangement and method for bidirectional data transmission
First Claim
1. A transformer arrangement for signal transmission, the transformer arrangement comprising:
- at least one transformer comprising a primary coil and a secondary coil; and
a controller configured toin a magnetization phase, control a first current to flow through the primary coil to increase until a predefined criterion is fulfilled, wherein the magnetization phase is longer than one of;
a time constant of the primary coil of the at least one transformer; and
two times the time constant of the primary coil of the at least one transformer;
in a voltage application phase, apply a voltage to the at least one transformer so that a second current flows through the primary coil, wherein the second current has a polarity which changes during the voltage application phase compared with the first current, wherein the voltage application phase is shorter than one of;
two times the time constant of the primary coil of the at least one transformer; and
the time constant of the primary coil of the at least one transformer.
1 Assignment
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Accused Products
Abstract
A transformer arrangement for signal transmission is provided, the transformer arrangement having at least one transformer with a primary coil and a secondary coil and a controller. The controller is configured in a magnetization phase to control a first current to flow through the primary coil to increase until a predefined criterion is fulfilled, wherein the magnetization phase is longer than a time constant of the primary coil of the at least one transformer. The controller is configured in a voltage application phase to apply a voltage to the at least one transformer so that a second current flows through the primary coil, wherein the second current has a polarity which changes during the voltage application phase compared with the first current, wherein the voltage application phase is shorter than two times the time constant of the primary coil of the at least one transformer.
6 Citations
42 Claims
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1. A transformer arrangement for signal transmission, the transformer arrangement comprising:
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at least one transformer comprising a primary coil and a secondary coil; and a controller configured to in a magnetization phase, control a first current to flow through the primary coil to increase until a predefined criterion is fulfilled, wherein the magnetization phase is longer than one of; a time constant of the primary coil of the at least one transformer; and two times the time constant of the primary coil of the at least one transformer; in a voltage application phase, apply a voltage to the at least one transformer so that a second current flows through the primary coil, wherein the second current has a polarity which changes during the voltage application phase compared with the first current, wherein the voltage application phase is shorter than one of; two times the time constant of the primary coil of the at least one transformer; and the time constant of the primary coil of the at least one transformer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A circuit arrangement comprising:
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a first comparator circuit having a first comparator threshold; a second comparator circuit having a second comparator threshold; a third comparator circuit having a third comparator threshold; a control circuit configured to adapt the first comparator threshold such that the first comparator circuit is in a first comparator output state for a first time portion of a predefined time interval, adapt the second comparator threshold such that the second comparator circuit is in a first comparator output state for a second time portion of the predefined time interval, wherein the second time portion is longer than the first time portion, and set the third comparator threshold to be between the first comparator threshold and the second comparator threshold, wherein the control circuit is configured to at least one of adapt the first threshold based on the output signal provided by the first comparator circuit; and adapt the second threshold based on the output signal provided by the second comparator circuit. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A transformer arrangement for signal transmission, the transformer arrangement comprising:
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at least one transformer comprising a primary coil and a secondary coil; the transformer arrangement having a resonance frequency; a controller configured to terminate driving the primary coil so that the transformer arrangement is oscillating in the resonance frequency; a switching circuit coupled to the secondary coil and configured to, in a first switching state, let the transformer arrangement oscillate, and, in a second switching state, to decrease the oscillation of the transformer arrangement, further comprising; driving the primary coil after a certain time period has passed after terminating driving the primary coil, during the certain time before starting to drive the coil a bit is transmitted by detecting if the oscillation has decreased or not. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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Specification