SU615473A1 - Multichannel device for interfacing communication channels with digital computer - Google Patents

Description

(54)

MULTIFUNCTIONAL DEVICE FOR CONNECTING COMMUNICATION CHANNELS WITH A DIGITAL COMPUTER MACHINES

The invention relates to the field of computer technology, in particular to devices for interfacing communication channels and digital computers and can be used in data processing systems.

It is known a device for an interfaced computer with communication channels rij containing a pusch block, a transform block, a control block, a long-term memory block, an address register, an encoder, a distributor, a counter, a control panel, a trigger, and AND, and delay elements.

The disadvantage of the device is the necessity of spending a large amount of equipment during its re-identification.

The closest to the invention of the technical essence and the achieved result is a multichannel device for interfacing the communication channels with a digital computer 2, which contains a generator | parameter matching unit, the first and second inputs / outputs of which are connected respectively to the input-output

a symbol processing unit and an input “output device”, each channel of which is contained (first and second switching elements, whose inputs are connected to the corresponding input of the device.

A disadvantage of this device is the presence in linear circuits of electromechanical turnips, a co-ordinating upper range of speeds of the device,. does not exceed 5OO baud. The presence of electromechanical also increases the volume of equipment. In addition, there is no need for dedicated control elements of channel operation modes, since a change in the communication mode (for example, the transition from duplex to half duplex) occurs rarely.

The name of the linear relays is justified when operating the equipment along the physical lines, which allows one to get rid of the galvanic connection with the lines that are acted upon by interference from the oi carrier | high voltage. In the case when the work is carried out through local circuits, there is no need for such an isolation, since there is an equipment between the physical circuits and the interface equipment. It is under such conditions that the interfacing devices in the series of ACS work. Thus, the main drawback of the device is the excessive complexity of its construction,. The circuit of the invention is a simplification of the device. This is achieved by offering a device with a priority block, a polarity code register and a subscriber number register, and each channel contains the top, second, third AND elements and a register, with the output of the polarity code register, the output of the subscriber number register and the input the priority block is connected respectively to the first, second inputs and the first output of the character processing block, the second output of which is connected to the inputs of the polarity code and subscriber number registers, the output of the pulse generator is connected to the first inputs of the AND elements of the channels The output of the first switching alemeite channel is connected to the second inputs of the first and second channel elements, the output of the second switching element of the channel is connected to the third input of the first and second inputs of the third element of the channel, the outputs of the first, second and third channel elements are connected to the first, second and the third inputs of the channel register, the first outputs of the channel registers are connected to the group of inputs of the priority block, the group of outputs of which is connected to the fourth inputs of the registers kznul, the second outputs are register s channels are connected with the first group of inputs tsol polarity code register, a second group of inputs of which is connected with the third output channel registers, and outputs of registers kynalov soedinent with input numbers abonen- register. The block diagram of the device is shown in the drawing. The multichannel device for interfacing communication channels with a digital computer contains a pulse generator 1, a priority block 2, a polarity code register 3, a subscriber number register 4, a character processing block 5, a parameter matching block 6, channels 7-9, each of which contain switching elements 1O, 11, elements AND 12-14, register 15 with outputs 26 designate the inputs of the device, position 27 input-output device. The character processing unit is essentially a software program. For example, in a specific embodiment of the device, a software machine of the type M-6010 may be used. The operation of the device when receiving signals is performed as follows. The leading edge of the positive polarity signal arriving at input 24 passes through the active resistance located in the switching element 10, which opens. The same signal, the passage through the active resistance of the switching element And, closes it. As a result, a signal arrives at the input of element And 13, which, by a clock pulse from generator 1, is recorded as state 1 in the first information and register register 15, arriving at input 24 is peregrne (sending negative polarity, the signal passes through the active resistance at the input of element 11 and opens it (element 1O is locked). Next, the signal goes to element 14, where the clock pulse from the generator 1 is written In another register bit 15 as the state O. From the outputs of the switching elements 10, 11, signals are also input to the element I 12i, from where the clock pulse from the generator 1 is recorded in the control register bit 15, In the last four bits of the register 15 is constant The address of this communication line is written down. The service request signals coming to the input of block 2 are processed from the communication channels in accordance with their priorities, after which block 5 sends the interrupt signal 1 of the picture. At the same time, a read signal is sent to register 15 — according to which the contents of the information and address bits are copied to registers 3, 4. From here, by the signal from block 5, the contents of registers 3, 4 enter block 5 as information and address bytes. The last three bits of the registration 4 are used to indicate the number of the channel group. The number of such groups is 8, the number of communication channels in a group is 16. Registration of a bit, assembly of a character, and, if necessary, an array, processing of information, change of operation modes.

synchronization, the implementation of methods to improve the reliability, etc., & this is accomplished in block 5, the exchange and the formaiia between block 5 and the digital computer is carried out through block 6, which can be used as an interface device, which, on the one hand , has 1yupn of type ChK, as - an emergency. .

The transmission of information from the digital computer to the communication channels is carried out according to the same principles, as a result of which the transmission circuits are not shown in the drawing.

Due to the interaction of the communication channels with the S block only at the level of the exchange of the fronts of the design of the device of the value of the device1: (But it is simplified. Signal processing with the software program allows you to use any kind of channel with any channels, including telephone channels (via modem). In this case, to reduce the frequency of access to the software, the capacity of the information bits of register 15 can be extended to a byte.

Claims (2)

Invention Formula a multi-channel device for interfacing communication channels with a digital computing machine, comprising a pulse generator, a parameter matching unit, the first and second inputs / outputs of which are connected respectively to the input-output of the character processing unit and to the input-output of the device, each channel of which contains the first and the second switching elements, the inputs of which are connected to the corresponding) input of the device, which is connected with the fact that contains a priority block, a polarity code register and a subscriber number register,. and each channel contains the first, second, the third elements are AND and the register, with the 5 output of the polarity code register, the output of the subscriber number register .. and the input of the priority block are connected respectively to the first, first inputs and the first output of the sign A processing unit, ( to the output is connected to the inputs of the subscriber's supervisor code registers, the generator output is connected to the first inputs of the AND elements of the channels, the output of the first switching element 15 channels connected to the second inputs of the first and second; elements And channel output second; the switching element of the channel is connected to the third input of the first and second input; the third element 0 And the channel, the outputs of the first, second and third elements And the channel is connected respectively to the first, second and third inputs of the channel register, the first outputs of the channel registers are connected to 25 group of inputs of the priority block, the group of outputs of which is connected to the fourth inputs of the channel registers, the second outputs of the regigram channels connected to the first group of inputs of the register of the field field p- 0, the second group of inputs of which - connected to the third outputs of the channel registers, and the fourth outputs of the channel registers are connected to the group of codes, the subscriber number regas. five The sources are information taken into account during the examination: 1, USSR Author's Certificate No. 433482, cl. Q 06 F 9/18, 1972. 2. Bazilevich E. V., Oramnek G, F. Message switching systems based on computer equipment, ed. References 1971, p. 21, ff9№s, Ж «6.