Device and method for regulating a transmission moment of a continuous transmission signal
First Claim
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1. A device for controlling an absolute transmission time of a continuous transmission signal in a transmitting/receiving unit comprising:
- a correction unit configured to produce an output data signal based on a received correction signal, wherein the correction unit comprises a fractional sampling rate converter unit comprising a variable sampling rate conversion ratio, wherein the fractional sampling rate converter unit comprises a first input configured to receive an input data signal having an input sampling rate, and an output configured to output the output data signal having an output sampling rate, and a second input configured to receive the correction signal and adjust the sampling rate conversion ratio thereof based on the correction signal,a sequence control unit connected downstream from the correction unit and configured to produce a working clock signal,a counter unit electrically connected to the sequence control unit and configured to use the working clock signal from the sequence control unit to generate an internal actual transmission time signal, anda control device configured to compare the internal actual transmission time signal with an external nominal transmission time signal to produce the correction signal, and further configured to transmit the correction signal to the correction unit in order to correct the actual transmission time.
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Abstract
A comparator unit is used to compare an actual transmission time signal with a nominal transmission time signal and to produce a difference signal from the discrepancy, from which difference signal a correction signal is produced in a control unit. This correction signal is used to control a correction unit, which compresses or extends an applied input data signal, thus changing the phase angle of the output data signal so as to minimize the discrepancy between the transmission times. The discrepancy is corrected independently of the system clock, and the correction speed is set variably.
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Citations
21 Claims
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1. A device for controlling an absolute transmission time of a continuous transmission signal in a transmitting/receiving unit comprising:
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a correction unit configured to produce an output data signal based on a received correction signal, wherein the correction unit comprises a fractional sampling rate converter unit comprising a variable sampling rate conversion ratio, wherein the fractional sampling rate converter unit comprises a first input configured to receive an input data signal having an input sampling rate, and an output configured to output the output data signal having an output sampling rate, and a second input configured to receive the correction signal and adjust the sampling rate conversion ratio thereof based on the correction signal, a sequence control unit connected downstream from the correction unit and configured to produce a working clock signal, a counter unit electrically connected to the sequence control unit and configured to use the working clock signal from the sequence control unit to generate an internal actual transmission time signal, and a control device configured to compare the internal actual transmission time signal with an external nominal transmission time signal to produce the correction signal, and further configured to transmit the correction signal to the correction unit in order to correct the actual transmission time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling the transmission time of a continuous transmission signal in a transmitting/receiving unit, comprising:
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a) producing an internal actual transmission time signal in the transmitting/receiving unit, containing information about an actual transmission time, b) comparing the internal actual transmission time signal with an external nominal transmission time signal which is received at the transmitting/receiving unit and which contains information about a nominal transmission time, c) producing a difference signal in the transmitting/receiving unit, which contains information about a discrepancy between the two transmission times associated with the actual and nominal transmission time signals, and d) correcting the actual transmission time in the transmitting/receiving unit such that the discrepancy between the two transmission times, contained in the difference signal, is minimized, wherein the correction is carried out independently of a defined clock period of the transmitting/receiving unit, and wherein a time period for the correction is set variably therein, and wherein a time duration of the correction is set by a value of a conversion ratio of a fractional sampling rate of an input data signal, and an output data signal respectively. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification