SU1112403A1 - Method and device for searching information on record medium - Google Patents

Abstract

1. A method for searching information on a recording medium, which consists in generating and storing signals during recording. the beginning, the end and the number of each array of information, and during playback they determine the direction of the search and find the array of information by comparing the memorized and reproduced signals of the beginning, the end and the number of the array of information, characterized in that, in order to reduce the troop time during recording, as signals the beginning and the end of the array of information use the first and last code combinations of the array of information, and during the “challenge,” determine the direction of search by the sign of the difference between the code of the number of the array of information and the stored the code number of the last item of the previous array iiformatsii. K5 O 00

Description

2. A device for searching information, comprising a control panel connected by an output to the first input of the first memory block and to the input of the decoder, a second block, a memory and a comparison unit, the first and second inputs connected to the outputs of the first and second memory blocks, the control unit , the first and second inputs connected to the first and second outputs of the comparator unit and connected to the control buses, a sign determinant, the first and second outputs connected to the third and fourth inputs of the control unit, and an output bus characterized by that, in order to reduce information retrieval time, the third, fourth and fifth memory blocks, a command sensor and a delay element are entered into it, the second memory block is connected to the control panel output by the first input and the second input to the second input memory and with the first output of the comparison unit and the third, input with the first output of the command sensor, connected by the second, third, fourth and fifth outputs to the third input of the first memory block, to the third output of the comparison unit, to the fifth input of the control unit to first entrance .opr the sign divider, the output of the third memory block is connected to the first input of the delay element, the second input of the sign determinant and the fourth input of the comparison block, the first input of the fourth memory block is connected to the first input of the fifth memory block, to the fifth input of the comparison block to the output of the sign determinant connected by the third input to the output of the fifth memory block connected by the first input to the sixth output of the command sensor and to the second input of the fourth memory block and connected by the second input to the output of the fourth memory block, at fl om exit the control unit is connected to the input of the third memory unit and to the second input of the delay element connected by the third input to the second output of the comparison unit and the output house to the output bus, and the output of the decoder is connected to the input of the command sensor.

This invention relates to the field of a magnet; recording, in particular to methods and devices for searching information on a recording medium.

A known method of searching for information on a recording medium is that when recording an array of information is divided into recording zones, which are assigned corresponding numbers recorded on the recording medium, and during playback they determine the direction of the search and find an array of information by comparing the stored and reproduced zone numbers (I).

The disadvantage of this method of searching for information consists in a significant amount of search time.

A device for retrieving information is known comprising a control panel, a playback unit and an address generation unit connected to a control unit and an instruction generation unit (2).

The disadvantage of this device is a significant amount of search time.

There is a known method of searching information on a recording medium, as well as a device for its implementation, which consists in recording the signs of the beginning, the end and the numbers of each information array and comparing the recorded and memorized codes during playback and search for information, according to the results comparisons determine the direction and time of the search for information, and the known device contains a comparison block connected directly to the first memory block, and

control through the second memory block as well. interconnected decoder, zone number selector, control unit and

sign determinant (3).

The disadvantage of the known method and device for its implementation is that the time for searching information is not small enough.

The purpose of the invention is to reduce the time for searching information on the recording media when

records

The goal is achieved by the fact that, according to the method of searching for information on a recording medium, which consists in the fact that during recording, the beginning, end, and number of each array of information are formed and stored,

and during playback, the search direction is determined and the array of information is found by comparing the stored and reproduced start, end and number signals of the information array, the first and last code combinations of the information array are used as the start and end signals of the information array, and during playback, the search direction is determined by the sign of the difference between the code number of the array of information and the stored code

numbers of the last element of the previous array of information.

At the same time, in the information retrieval device, comprising a control panel connected by an output to the first input of the first memory block and to the input of the descrambler, a second memory block and a comparison unit, the first and second inputs connected to the outputs of the first and second memory blocks control, the first and second inputs connected to the first and second outputs of the comparison unit and connected to the control buses, a sign determinant, the first and second outputs connected to the third and fourth inputs of the control unit, and the output bus, are entered the third, fourth and fifth blocks of memory, the command sensor and the delay element, the second memory block connected to the first input to the output of the control panel, the second input to the second input of the first memory block and to the first output of the comparison unit and the third input to the first the output of the command sensor connected by the second, third, fourth and fifth outputs to the third input of the first memory block, to the third input of the comparison unit, to the fifth input of the control unit and to the first input of the character pointer, the output of the third memory block is connected to the first input the delay element, with the second input of the sign determinant and with the fourth input of the comparison unit, the first input of the fourth memory block is connected to the first input of the fifth memory block, to the fifth input of the comparison block and to the output of the sign determinant connected by the third input to the fifth output a memory unit connected by the first input to the sixth output of the command sensor and to the second input of the fourth memory unit and connected by the second input to the output of the fourth memory unit, while the outputs of the control unit are connected to the input of the third memory unit and the second input of delay element connected to the third input of the second output of the comparing unit and output - to the output bus, and a decoder output coupled to an input command sensor.

The proposed device makes it possible to reduce the time for searching information on a recording medium due to the reduction of time lost in processing signaling signals.

The drawing shows one of the possible options for a device for searching information that implements the proposed method for searching information on a recording medium.

The information retrieval device comprises a remote control 1 connected to the output of the first input of the first memory block 2 and the input of the decoder 3, the second memory block 4 and the comparison block 5, the first and second inputs connected to the outputs of the first and second blocks 2 and 4 memories, a control unit 6, the first and second inputs connected to the first and second outputs of the comparative unit 5 and connected to the control buses 7, the identifier of 8 characters, the first and second outputs connected to

the third and fourth inputs of the control unit 6, and the output bus 9, as well as the third, fourth and fifth memory blocks 10-12, the command sensor 13 and the delay element 14, the second memory block 4 connected by the first input to the output of the control panel 1 , the second input with the second input of the first memory block 2 and the first output of the comparison unit 5 and the third input with the first output of the command sensor 13 connected to the second, third, fourth and fifth

j outputs to the third input of the first memory block 2, the third input of the comparison unit 5, the fifth input of the control unit 6 and to the first input of the 8 character determiner, the output of the third memory block 10 is connected to the first input of the delay element 14, to the second input of the determinant 8 characters and with the fourth input of the comparison unit 5, the first input of the fourth memory block 11 is connected to the first input of the fifth memory block 12, to the fifth input of the comparison unit 5 and to the output of the 8 character determiner connected by the third input to the fifth output first memory block 12 input with the sixth output of the sensor 13 commands and with the second input of the fourth memory block 11 and connected by the second input with the output

0 of the fourth memory block 11, wherein the outputs of the control unit 6 are connected to the input of the third memory block 10 and to the second input of the delay element 14 connected by the third input to the second output of the comparison unit 5 and the output to the output bus 9,

5 and the output of the decoder 3 is connected to the input of the sensor 13 commands.

Search for information is as follows.

When recording from the I control panel, the signs-signals, the sequence of operations and the operation mode are formed using the decoder 3 and the command sensor 13. The latter permits the recording of signs on the start in the first block 2 of memory, the signs of the end in the second block 4 of memory and signs

5 numbers in the fifth memory block 12, and the length of the required information array in the fourth memory block II. At the same time, the first and last combinations of the information array are selected as the signal signals. During playback, the signal reproduced from the recording media acts on the determinant of 8 characters. In the case of equality of codes from the output of the determinant of 8 characters and from the output of the fifth memory block 12, the contents of the first and second memory blocks 2 and 4 are compared and the content of the fourth and the fifth AND blocks and the 12 memory are summed to record the summation result in th memory block 12. Thus, when playing back, the signs of the information search of the 1st array of information are entered, they are memorized and the search direction is determined by the sign of the difference from the output of the 8 sign determinant. Since the beginning of the information array is located, the content of the second and third / blocks 4 and 10 of the memory is compared. As a result of these comparisons, a search signal is generated. The reproducible information of the required array is output from the output of delay element 14 to the output bus 9 from the moment of finding the sign of the beginning of the array. The use of the invention makes it possible to significantly reduce the search time and to increase the efficiency of using a nosnel record in comparison with the basic object.

Claims (2)

1. The method of searching for information on a recording medium, which consists in the fact that during recording, signals are generated and stored. the beginning, end and number of each information array, and during playback, determine the direction of the search and find the information array by comparing the stored and reproduced signals of the beginning, end and number of the information array, characterized in that, in order to reduce the search time during recording, as the start and the end of the information array, the first and last code combinations of the information array are used, and during playback, the direction of the search is determined by the sign of the difference in the code of the number of the information array and the stored code n measuring the last • element of the previous array of information, β U, .., 1112403 2. A device for searching for information, comprising a control panel connected by an output to the first input of the first memory unit and to the input of the decoder, a second unit, memory and a comparison unit, the first and second inputs connected to the outputs of the first and second memory units, the control unit, the first and the second inputs connected to the first and second outputs of the comparison unit n connected to the control buses, the signifier, the first and second outputs connected to the third and fourth inputs of the control unit, and the output bus, characterized in then, in order to reduce the time of searching for information, the third, fourth and fifth memory blocks, a command sensor and a delay element are introduced into it, the second memory block being connected by the first input to the output of the control panel, the second input to the second input of the first memory unit and the first the output of the comparison unit and the third input with the first output of the command sensor connected to the second, third, fourth and fifth outputs to the third input of the first memory unit, to the third input of the comparison unit, to the fifth input of the control unit and to the first input. Signal amplifier, the output of the third memory unit is connected to the first input of the delay element, with the second input of the signifier and the fourth input of the comparison unit, the first input of the fourth memory unit is connected to the first input of the fifth memory unit, to the fifth input of the comparison unit and to the output of the signifier connected the third input to the output of the fifth memory block, connected by the first input to the sixth output of the command sensor and to the second input of the fourth memory block and connected by the second input to the output of the fourth memory block, while the output The control unit ki are connected to the input of the third memory unit and to the second input of the delay element connected by the third input to the second output of the comparison unit and exit, the house is connected to the output bus, and the decoder output is connected to the input of the command sensor.