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Device for transmiting signal

A technology of signal and signal transmission system, applied in the field of devices

Inactive Publication Date: 2007-09-05
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The obvious disadvantage of this method is that an additional control line is required between the first and second user, for example between a sensor for detecting speed-related measured values ​​and a tachograph for recording the speed of the motor vehicle

Method used

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  • Device for transmiting signal
  • Device for transmiting signal
  • Device for transmiting signal

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Embodiment Construction

[0013] FIG. 1 shows the basic structure of the important components of a device 1 according to the invention, in which there is a first subscriber T1, a circuit C and a second subscriber T2. The first and the second subscriber T1 , T2 each have a microcontroller μCa, μCb and an interface UARTa, UARTb (UART=universal asynchronous transceiver) connected to the microcontroller.

[0014] In this case, the first interface UARTa is designed as a bidirectional transmission, which has a first interface port RxTx2 for sending and receiving.

[0015] The second interface UARTb has two second interface ports, namely a receiving port RxdC and a transmitting port TxdC. Both the receiving port RxdC and the sending port TxdC are designed to be unidirectional.

[0016] The circuit C according to the present invention is located between the first user T1 and the second user T2, the circuit forms two-way signal transmission with the first user T1 through the first interface port RxTx2, and com...

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Abstract

The invention relates to a system comprising subscribers (T1, T2) of a signal transmission having different interface physics. As a result, an additional control line is disadvantageously required between these interfaces. The invention overcomes this problem by providing between the interfaces a circuit (C) for connecting bidirectional interfaces of subscribers to unidirectional interfaces of other subscribers (T1, T2). The circuit (C) is especially advantageous in that it automatically recognizes the origin of signals.

Description

technical field [0001] The invention relates to a device comprising: a user of a signal transmission system; and a circuit for connecting a bidirectional interface of the user to a unidirectional interface of other users. Background technique [0002] Problems often arise when transmitting signals when a bidirectional send-receive line of an asynchronous interface is connected to another send-receive line. A feasible but cost-intensive solution for this application is for the microcontrollers of the two communication partners to agree on the receive and transmit drive directions between each other via an additional control line according to the receive-transmit protocol. The obvious disadvantage of this method is that an additional control line is required between the first and second user, for example between a sensor for detecting speed-related measured values ​​and a tachograph for recording the speed of the motor vehicle . Contents of the invention [0003] The objec...

Claims

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Application Information

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IPC IPC(8): G06F13/40
CPCY10T307/918G06F13/4072
Inventor 彼得·沃尔夫迪特尔·克洛斯特迈尔
Owner SIEMENS AG
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