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AssigneeSiemens Aktiengesellschaft
InventorsRolf Hagen, Ola Bergman, Juergen Harenberg, Herbert Steiner
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A circuit arrangement is provided for the transmission of digital signals between transmitting and/or receiving stations which operate with differing data transmission procedures and with different data formats. The signal transmission respectively occurs by way of a converter unit which, like the transmitting and receiving installations, is connected to a switching system. In the train of the transmission of digital signals from a transmitting installation operating with a lower data transmission rate to a receiving installation operating with a higher data transmission rate, the digital signals emitted by the appertaining transmitting installation are first collected in the converter unit in order to be emitted to the appertaining receiving installation only given the existence of a sufficient plurality of such signals. The transmission of digital signals from a transmitting installation operating with a higher data transmission rate to a receiving installation operating with a lower transmission rate occurs in data blocks. A respective plurality of data signals forming a block or, respectively, a signal group, is emitted together with a signal group end mark by the appertaining transmitting installation to the converter unit which then relays the digital signals to the appertaining receiving installation. In order to minimize control expense, the converter unit checks its signal acceptance capability upon the occurrence of the group end mark. Only given existence of a sufficient signal acceptance capability in the converter unit is an acknowledgment character emitted to the transmitting installation, the acknowledgment character then causing the transmission of signals forming a further signal group or block. The invention is preferably employed for signal transmission between telex stations and office printergram or teletex stations.
In a circuit arrangement for transmitting data between data stations including first data stations which operate with a first transmission procedure and a first data format and second data stations which operate with a second transmission procedure and a second data format, in which a switching system operates to interconnect first and second data stations via respective terminating circuits which are divided into first and second groups, respectively, the first group assigned to the first data stations and the second group assigned to the second data stations, and in which a converter is provided for converting data transmission of one of the types of data stations into data transmission usable by the other type of data station, the improvement wherein:
Dependencies are inferred from the claim text.