SU932533A2

SU932533A2 - Magnetic recording apparatus

Info

Publication number: SU932533A2
Application number: SU803004923A
Authority: SU
Inventors: Игорь Васильевич Чуманов
Original assignee: Предприятие П/Я В-8071
Priority date: 1980-11-10
Filing date: 1980-11-10
Publication date: 1982-05-30

Description

Изобретение относитс к технике. накоплени информации, а именно к аппаратам магнитной записи.The invention relates to engineering. accumulation of information, namely, magnetic recording apparatus.

По основному авт. св. 809328, известен аппарат магнитной записи, содержащий реверсивный лентопрот жный механизм, соединенный с ним блок управлени , магнитные головки записи и воспроизведени , соединенные через коммутаторы с блоками записи и восппроизведени , блок записи служебных сигналов, блок формировани управл ющих меток, датчик скорости, шины командных сигналов, блок формировани управл ющих меток и блок переключени дорожек.According to the main author. St. 809328, a magnetic recording apparatus is known, comprising a reversible tape mechanism, a control unit connected to it, magnetic recording and reproducing heads connected via switches to recording and reproducing blocks, an overhead signal recording unit, a control mark generation unit, a speed sensor, command busses signals, a control label generation unit and a track switching unit.

Недос5татками устройства вл ютс сбой в работе из-за образовани вод ной пленки между носителем и рабочей поверхностью магнитной головки при повышенной влажности окружающей среды, а также потери информации в режиме реверсировани носител .The shortcomings of the device are a malfunction due to the formation of a water film between the carrier and the working surface of the magnetic head at high humidity of the environment, as well as the loss of information in the carrier reversal mode.

.Цель изобретени - уменьшение потерь записываемой инфс рмации и повы-шение надежности работы устройства.The purpose of the invention is to reduce the loss of recorded information of memory and increase the reliability of the device.

Поставленна цель достигаетс тем, что в аппарат магнитной записи введены датчики оборотов боковыхThe goal is achieved by the fact that lateral speed sensors are introduced into the magnetic recording apparatus.

узлов и блок определени конца носител , при этом датчики оборотов боковых узлов к датчик скорости подключены к входам блока определени конца носител ,а выход блока определени конца носител соединен с входом блока управлени и с входом блока переключени дорожек.nodes and a carrier end detecting unit, while the lateral knot speed sensors to the speed sensor are connected to the inputs of the carrier end detecting unit, and the output of the carrier end detecting unit is connected to the input of the control unit and the input of the track switching unit.

На чертеже приведена блок-схема The drawing shows a block diagram

10 предлагаемого аппарата магнитной записи.10 of the proposed magnetic recording apparatus.

Аппарат магнитной записи содержит лентопрот жный механизм 1, на боковых узлах 2 и 3 которого размещена магнитна лента 4, перемещение которой осуществл етс ведущим узлом 5. Аппарат магнитной записи содержит также блок 6 управлени механизмом 1, блок 7 магнитных голо20 вок 8 и 9 записи, блок 10 магнитных головок 11 и 12 воспроизведени ,блок 13 магнитных головок 14 и 15 воспроизведени , блок 16 магнитных головок 17 и 18 записи, коммутатор 19 запи25 си, коммутатор 20 воспроизведени , шину 21 информации, блок 22 записи, блок 23 воспроизведени , выходную шину 24, блок 25 разметки, коммутатор 26 разметки, блок 27 обнаружени The magnetic recording apparatus contains a tape-testing mechanism 1, on the side nodes 2 and 3 of which magnetic tape 4 is placed, whose movement is carried out by the master node 5. The magnetic recording apparatus also contains a block 6 for controlling the mechanism 1, a block 7 for magnetic recording heads 8 and 9, block 10 of magnetic heads 11 and 12, playback, block 13 of magnetic heads 14 and 15, playback, block 16 of magnetic heads 17 and 18, recording, switch 19, recording, playback switch 20, information bus 21, recording unit 22, playback unit 23, output bus 24 blo 25 marking, marking the switch 26, detecting unit 27

Claims

30 reverse marks and a track switching unit 28, in which the AND 29 element, the OR 30 element and the switching node 31 are included. The input element And 29 is connected to the bus 32 command Record The device is equipped with sensors 33 turns the side nodes 2 and 3 and the block 34 determining the end of the carrier The inputs of the block 34 determining the end of the carrier is connected to the sensors 33 of turns and the sensor 35 speed of the magnetic tape 4. The device operates as follows. The reversal of the movement of the magnetic tape 4 is carried out by the leaders of the node 5 according to the signals of the control unit 6, and the information is recorded (played back) sequentially along the tracks of the magnetic tape 4.) Switching the heads from track to track is carried out by switches 19 and 20. According to the minimum interval of the pulses of the sensor 33 revolutions of the feeding unit by the block 34 forms the signal of the end of the magnetic tape 4. The minimum interval of the pulses of the sensor 33 is formed by comparing the intervals of the pulse s 33 rpm sensor 35 and the speed sensor pulses Given that the speed is constant n hydrochloric. This system of forming the signal of the end of the magnetic tape 4 ensures reliable signal formation, but does not provide the necessary accuracy of the signal formation. The accuracy of the formation of the signal of the end of the magnetic tape is provided by the second signal formation system according to the pre-recorded labels, for which the marking unit 25 and the output switch C are used. 27, the reverse mark is detected, the command signal is removed to control the track switching unit 28. When the signal of the reverse mark disappears, for example, in conditions of high humidity of the environment, reversal is performed by the output signal of block 34, for which signals of block 34 and block 27 are fed to the inputs of the OR 30 element. Reducing the playback loss of information is achieved by turning off the mark detection unit 27 reverse. The disconnection is made by supplying a prohibitive signal over the bus. 32 at the input of the element I 29, with large segments of the magnetic tape 4 being included in the reproduction process by reversing the media according to the signals of the carrier end detection unit 34. The proposed apparatus poses to reduce the loss of recorded information and increase the reliability of the device. Claims of the invention Magnetic recording apparatus according to the author. St. No. 809328, characterized in that, in order to reduce the loss of the recorded information and increase the reliability of operation, it is equipped with lateral node speed sensors AND with a carrier end detection unit, while the lateral speed sensors and a speed sensor are connected to the inputs of the carrier end detecting unit, and the output of the media end detecting unit is connected to the input of the control unit and to the input of the track switching unit. Sources of information taken into account in the examination of the USSR Copyright Certificate №809328, cl. G 11 B 5/00, 1979 (prototype).