Method and device for bi-directional half duplex transmission of data
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Accused Products
Abstract
A method and a device for bi-directional transmission of data are provided such that an interface for digital communication on a signal line is obtained which is suited for automotive use. In accordance with the present invention, the following are provided: at least one switchable load unit, the load unit of the temporary transmitter being able to be deenergized prior to transmission of the data; and being able to be reenergized after transmission of the data; in each case at least one switchable current-source unit is assigned to the load unit, the current-source unit of the transmitter being able to be clocked to generate the signals to be transmitted via the communication path; and in each case at least one comparator unit is assigned to the load unit, corresponding output signals being generated at the comparator unit of the receiver from the signals transmitted via the communication path.
9 Citations
30 Claims
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1-11. -11. (canceled)
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12. A method for bi-directional transmission of data signals between at least two communication participants on a communication path, the communication participants each having at least one switchable load unit, at least one switchable current-source unit assigned to the switchable load unit, and
at least one comparator unit assigned to the load unit, the method comprising: temporarily assigning each of the at least two communication participants one of a function of a transmitter for transmission of the data signals and a function of a receiver, wherein;
the switchable load unit of the transmitter is deenergized prior to transmission of the data signals;
the switchable current-source unit of the transmitter is clocked for generating the data signals to be transmitted via the communication path;
the generated data signals are transmitted via the communication path, so that corresponding output signals are produced at the comparator unit assigned to the receiver; and
the switchable load unit of the transmitter is reenergized after transmission of the data signals. - View Dependent Claims (13, 14, 15)
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16. A system for bi-directional transmission of data signals on a communication path, comprising:
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at least two communication participants on the communication path, each of the two communication participants being temporarily assigned one of a function of a transmitter for transmission of the data signals and a function of a receiver, each of the two communication participants including at least one switchable load unit, at least one first switchable current-source unit assigned to the switchable load unit, and at least one comparator unit assigned to the switchable load unit;
wherein the switchable load unit of the transmitter is deenergized prior to transmission of the data signals and reenergized after transmission of the data signals, the switchable current-source unit of the transmitter is clocked for generating the data signals to be transmitted via the communication path, and wherein corresponding output signals are generated at the comparator unit of the receiver from the data signals transmitted via the communication path. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of operating a radar sensor interface unit of a radar system, the interface unit facilitating bi-directional transmission of data signals between at least two communication participants on a communication path, the communication participants each having at least one switchable load unit, at least one switchable current-source unit assigned to the switchable load unit, and at least one comparator unit assigned to the load unit, the method comprising:
temporarily assigning each of the at least two communication participants one of a function of a transmitter for transmission of the data signals and a function of a receiver, wherein;
the switchable load unit of the transmitter is deenergized prior to transmission of the data signals;
the switchable current-source unit of the transmitter is clocked for generating the data signals to be transmitted via the communication path;
the generated data signals are transmitted via the communication path, so that corresponding output signals are produced at the comparator unit assigned to the receiver; and
the switchable load unit of the transmitter is reenergized after transmission of the data signals.
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30. A radar sensor interface unit of a radar system, the interface unit facilitating bi-directional transmission of data signals on a communication path, comprising:
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at least two communication participants on the communication path, each of the two communication participants being temporarily assigned one of a function of a transmitter for transmission of the data signals and a function of a receiver, each of the two communication participants including at least one switchable load unit, at least one first switchable current-source unit assigned to the switchable load unit, and at least one comparator unit assigned to the switchable load unit;
wherein the switchable load unit of the transmitter is deenergized prior to transmission of the data signals and reenergized after transmission of the data signals, the switchable current-source unit of the transmitter is clocked for generating the data signals to be transmitted via the communication path, and wherein corresponding output signals are generated at the comparator unit of the receiver from the data signals transmitted via the communication path.
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Specification