SU768016A1 - Data transmitter for quasielectronic automatic telephone exchange - Google Patents

Description

(54) TRANSMISSION INFORMATION DEVICE

FOR QUASIELECTRONIC AUTOMATIC

TELEPHONE STATION

I

The invention relates to telephony and can be used in quasi-electronic automatic telephone stations for transmitting information from an electronic computing machine to peripheral equipment.

A device for transmitting information for a quasi-automatic automatic telephone exchange is known, which contains a central control unit with connected address and information wiring, peripheral control units with decoders, and outputs of the peripheral control units with decoders are connected to the corresponding line sets and switching unit.

However, the known device has low noise immunity.

The aim of the invention is to increase the noise immunity.

To do this, the unit for transmitting information to a quasi-automatic automatic telephone exchange, containing a central control unit with connected address and information satellites, peripheral control units with decoders, the outputs of peripheral control units with decoders connected to the corresponding linear sets and switching unit, are entered address analysis with the decoder and the information transfer unit, the first inputs being the address analysis block with the decoder and the information transfer unit The second inputs of the address analysis block with the decoder and the information transfer block are connected to each other and connected to the first output of the address analysis block with the decoder, the second output of which is connected to the first inputs of the peripheral control blocks with the decryptors, the second inputs of which connected to the outputs of the block information transfer.

 The drawing shows a structural electrical circuit of the proposed information transmission device for a quasi-automatic telephone exchange.

Claims (1)

20 An information transmission device for a quasi-automatic automatic telephone station contains a central control unit 1, an address bus 2, an information bus 3, peripheral control units 4 with decoders 5, linear sets 6, a switching unit 7 an address analysis unit 8 with a decoder 9, unit 10 transmission of information. The information transmission device for a quasi-automatic station works as follows. In the initial state, when there are no messages from the computer, the outputs of blocks 8 and 10 are closed. Therefore, in the event of interference, the state of the peripheral control units 4 and, consequently, the associated equipment of the line sets 6 and the switching unit 7, does not change. In the operating mode, a message is received from the computer output on address bar 2 about the address of one of the groups . The decoder 9 identifies the group address and the additional output of block 8 receives a signal permitting the transfer of the address to the second stage of the address bus 11. Block 8 amplifies the message signals and transmits them to the second stage of the address bus 11 to recognize the peripheral control unit 4. The decipher 5 when receiving the message signals recognizes the address belonging to the corresponding peripheral control unit 4 and prepares it for receiving information. The message transmitted via information bus 3 will be selectively received only by that block 10, to the permitting input of which a signal was received from the additional output of block 8. The message received and amplified by block 10 goes to the second stage of the information bus 12, which is connected to the input of the peripheral block 4. Having received the information, the peripheral control unit 4 performs the necessary operations of interaction with the linear set 6 or the switching unit 7. Thus, all groups, except the identified one, do not have access to the transmitted information, which completely eliminates the arrival of any spurious signals and interference to the peripheral control units 4. The proposed information transfer device for a quasi-automatic telephone station has a high noise immunity and high reliability, allows to significantly simplify the installation of equipment and reduce operating costs. An information transmission device for a quasi-automatic telephone exchange comprising a central control unit with address and data buses connected, peripheral control units with decoders, and outputs of the peripheral control units with descramblers are connected to the corresponding line sets and switching unit, characterized by that, in order to improve noise immunity, an address analysis block with a decoder and an information transmission block were introduced, the first in The ods of the address analysis block with the delphrarator and the information transfer unit are connected respectively to the address and information wands, the second inputs of the address analysis block with the decoder and the information transfer unit are connected to each other and connected to the first output of the address analysis block with the decoder, the second output of which is connected to the first inputs peripheral control units with decoders, the second inputs of which are connected to the output of the information transmission unit.