SU1711186A1 - Information retrieval unit - Google Patents

Abstract

The invention relates to computing and can be used to search for documentary and factual information on descriptor search patterns in natural language. In order to simplify the device, a counter, two pulse generators and a trigger are introduced into it, providing accumulation of unitary pulses, comparing the formed counting code with the code specified from the keyboard, and generating signals about the detection of the specified information. 3 il.

Description

The invention relates to computing and can be used to search for documentary and factual information on descriptor search patterns in natural language.

The purpose of the invention is to simplify the device. Fig. 1 presents a functional diagram of the device; 2 shows the structure of the arrangement of information on the carrier; on fig.Z - timing charts of the device.

The device contains a memory block 1, a counter 2, a comparison block 3, a parameter register 4, a keyboard 5, a trigger 6, first and second drivers 7 and 8 pulses, a delay element 9, and device outputs connected to the recorder 10.

Figure 2 shows an example of the arrangement of information and clock labels 11, 12 on the carrier 13.

On fig.Z shows information codes 14, clock pulses 15, pulses 16

reset, the pulses 17 of the end of registration, the signal 18 at the output of the trigger 6, the output clock pulses 19.

The device works as follows.

Playback recording by block 1 of memory creates a code at the outputs in which the number of pulses corresponds to the terms or numbers of documents and clock marks 12. The code of the elements defined in counter 2 is compared in block 3 comparisons with the parallel code of the term typed on the keyboard 5 and stored A switch in the 4 parameter register. When comparing codes, comparison unit 3 sets trigger 6 to a state in which driver 7, executed as AND circuit, sends control write pulses (e, fig. 3) of established parallel document number codes received from counter 2 to recorder 10. Clock pulses 15 separating information elements are delayed by element 9 for a time sufficient

with

with

with about

to complete the registration, and set before starting the next recording counter 2 to the reset input. In addition, the end-of-document number impulses recorded in the coded signal, corresponding to this term and coinciding in phase with the reset pulses through the end-of-registration pulse shaper 8, made in the form of an AND matching circuit, set the control trigger 6 to its initial state, thereby prohibiting the passage recording pulses to the recorder.

Thus, in the registrar 10 all the numbers of documents containing the term typed on the keyboard are recorded. Typing the next query term on the keyboard repeats the described cycle of the device.

The information tracks of the carrier 13 are marked at intervals of a group of tags 11, 12 which are read when the device is operating. The number of labels 11 in the group corresponds to the code of the term, then at regular intervals there are marked groups corresponding to the numbers of documents containing the given term and at the end of the label the end of the record. Then the cycle is repeated.

On the other track there are marks 12, corresponding to the clock pulses, they are located in phase in the intervals between the groups of tags 11 on the information track.

Codes of terms and document numbers do not intersect. The range of change of document numbers is from 1 to n, where n is determined by the capacity of the information carrier. The range of change of term codes is from n + 1 to ch, where m is the number of terms in the dictionary.

Document number analysis allows you to select relevant documents and familiarize yourself with them in a stored collection or to order copies in information centers.

The memory unit after searching for one term should be reset.

The smaller information capacity during the initial presentation of document numbers is not a code, but bundles of pulses, nevertheless allows to be placed on

0 standard media contents of an inverted dictionary of a database on technical topics.

Claims (1)

Thus, the device, for all its simplicity, provides a search for information on demand on the natural language and without the use of a computer when searching. Apparatus of the invention for retrieving information containing a memory block controlling the input 0 of which is the control input of the device, the delay element of the serially connected keyboard and the parameter register, the outputs of which are connected to the inputs of the first group of the comparison unit, 5 characterized in that, in order to simplify the device, it comprises a counter, two pulse drivers and a trigger, the output of which is connected to the first input of the first pulse driver, 0, the output of the first pulse shaper is the clock output of the device, and the second input is connected to the first input of the memory unit and to the input of the delay element, the control inputs of the counter and The 5 second pulse generator is connected to the output of the delay element, the information inputs of the counter and the second pulse generator are connected to the second output of the memory unit, the counter outputs are connected respectively to the inputs of the second group of the comparison unit and are the information outputs of the device. Riga.1 Code . term Document Number Code End of entry numbers - Term code Codes. Code The code number of the information of the term of the document PIINN U1UL End of note Number code is tolerable