SU809607A1 - Device for selecting information channels - Google Patents

Description

The invention relates to a communication technique and can be used for preprocessing telemetry information, followed by inputting into data processing systems and a telemetry recording system. A device for selecting information channels is known, which contains an on-line storage unit, the output of which is connected to the input register of a number, the main outputs of which are connected to one input of the first element I, the pulse shaper and the address register IJ. However, the known device has insufficient performance. The purpose of the invention is to increase speed. The set target is achieved by the fact that a device for selecting information channels contains an operative protective unit, whose outputs are connected to a number register, the main outputs of which are connected to one input of the first element I, the driver of the pulses and the address register, and a decoder for two code converters, an adder, three OR elements and six AND elements, the main inputs of the second element AND are connected to the main inputs of the third and fourth elements AND, and to the outputs of the adder whose inputs are connected with additional outputs of the number register and the outputs of the first code converter, the inputs of which are connected to the outputs of the first element AND, the other inputs of which are connected to the outputs of the second code converter, the inputs of which are connected to the outputs of the first OR element and the inputs of the decoder, the outputs of which element And, the outputs of which through the second element OR are connected to the additional inputs of the second element And and the first input of the pulse former, the second input of which is connected to the main the inputs of the sixth element And and the main inputs of the seventh element and the outputs of which are connected to the inputs of the address register, one outputs of which are connected to the main inputs of the third element OR, the additional inputs of which are connected to the outputs of the third element AND, the additional inputs of which are connected to the pulse driver and one additional inputs of the fourth element And, the other additional inputs of which are connected to other outputs of the address register and the additional inputs of the sixth element And, the output Which odes are connected to the main inputs of the first element OR, the additional inputs of which are connected to the outputs of the fourth AND element, while the main outputs of the number register are connected to the additional inputs of the fifth AND element, and the outputs of the third OR element are connected to the operational storage unit, J and the additional inputs the seventh element And connected to the first input of the device, the second input of which is connected to the second input of the pulse shaper.

The drawing shows a block diagram of the proposed device.

The scheme contains an operational storage unit (OZB) 1, register 2. numbers, first-element 3 AND, first element 4 OR, second element 5 AND, address register 6, third-seventh elements 7-11 AND, respectively, second element 12 OR , the first 13 and second 14 code converters, adder 15, decoder 16, form 17 pulses and the third element 18 OR.

The device works as follows.

The information from block 1 is rewritten into register 2 by the address word, which comes in the form of a parallel code through element 11 to the input of register 6 of the address. Together with the address word on the device comes the accompanying impulse. On the leading edge of the pulse of the address word, the address register is loaded, and on the trailing edge, a pulse is addressed to block 1 during reading. In this case, the address for OZB 1 is the information of the higher bits m, recorded in the address register B. The lower bits of the register n-m determine the character number. in the line (n is the total number of bits in the address word). Selection of information channels is carried out in two calls to the PSA.

The information read from the HSS first treatment, conventionally divided into two

-the first part of the line is the field of selection of primary addresses, where each character carries information about the numbers of the information channel group. The value 1 in the symbol indicates the selection of any kanshov of this group of the Group with the primary addresses of the information channels in the selection field are arranged in ascending numbering, from left to right;

The second part of the line contains information about the intermediate address, which is assigned to the first Bh.iOtJanHOfi group of information channels. The forward address is used in the secondary call to the OZB.

The information, considered in a mountainous way to OZB, is also divided into two parts:

- the first part of the line is the field of selection of the primary addresses of all information channels included in the groups selected during the first access to the PSA, where each character carries information about the number of the information channel. A value of 1 in the symbol corresponds to the selected information channel. The primary addresses of the information channels in the selection field are arranged in ascending order of numbering from left to right;

- the second part of the line contains information about the secondary address, which is assigned to the information channel with the smallest number (the selection sign for this information channel is contained in the first part of the same line and corresponds to the first 1 located in the field of selection of primary addresses, starting from the left).

The lower bits of the address word entered in address register 6 are in turn divided into two types of information:

1st view - lower order bits

2nd type - senior bits.

The number of bits of the 1st type of information is determined by the number of information channels in each group, expressed in a dioic code.

The number of bits of the 2nd type of information, expressed in binary code, is determined by the number of groups of information channels located in one line of AOB 1.

Information of the 2 nd type of lower-order bits of the address b through the element 10 I, gated by the first call to OZB 1 when and through the element 4 OR is fed to the inputs of the decoder 16 and the first converter 13 of the code (converts the binary code to unitary).

The output information of the decoder controls the element 9 and the second input of which receives the information of the first part of the line read by the first call to the RRT 1. When element 9 is triggered AND the output of element 12 OR the indication that the address word received at the device input is in the group in which there are traffic channels selected for processing. By the same sign, indicating the end of the cycle of the first call to the AHD 1, a rerun pulse is generated on the shaper 17.

Claims (1)

1. USSR author's certificate .489232, class, H 04 J 3/00, 1973 (about 3 L-ul , t 1 6 HNn.COnft. OU Address enoJo tgt }eight /one lt t // m yg