SU1660042A1 - Magnetic recording device - Google Patents

Description

The invention relates to magnetic recording and allows pre-selecting the track registration

information on magnetic media in magnetic recording devices that automatically turn on the backup magnetic recording apparatus. The generator 18, the counter 12 and the decoder 13 produce a sequential search of the values of the position code until the output of the decoder 13 shows the value of the position code corresponding to the code of the recording track. At the output of the multiplexer 17, a signal is generated that prohibits the operation of the pulse generator 18, the counting stops, the enumeration of the position code values stops. 2 or,

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The invention relates to magnetic recording and can be used in information storage devices on a movable magnetic carrier.

The purpose of the invention is to expand the functionality of the device by providing a pre-selection for recording any of the tracks on a magnetic carrier.

Figure 1 shows the functional diagram of the device for magnetic recording; figure 2 - timing diagrams explaining his work. _h

The device for magnetic recording contains the first 1 and second 2 magnetic recording devices formed by the serial connection of the recording amplifier 3 and the recording head 4, the sensor 5 of the end of the magnetic media connected to the first input 'of the control unit 6, the first output of which is connected to the "Recording Enable" input control unit 6 of another magnetic recording device, and the input of the first one-shot 7, the output of which is connected to the first input of the first element OR the input of the second one-shot 9, the output of which is connected to the input "Rewind "control unit 6 and to the input of the third one-shot 10, the output of which is connected to the second input of the element OR 8, the output of which is connected to the input" Stop "of the control block 6, the outputs of the first one-vibration 7 of the first 1 and second 2 magnetic recording devices are connected respectively to the first and the second inputs of the second element OR 11, the output of which is connected to the input of a binary counter 12 pulse, the outputs of which are connected to the corresponding inputs of the decoder 13, the outputs of which are connected to the control inputs of the key elements (14 for the first app data of the magnetic recording, 15 for the second unit of the magnetic recording), the information inputs of which are connected to the information bus 16, the outputs of the key elements 14 and 15 are connected to the corresponding amplifiers 3 records, the second and third outputs of the control units 6 are connected to the corresponding control inputs of the multiplexer 17, information the inputs of which are connected to the corresponding outputs of the decoder 13, and the output of the multiplexer 17 is connected to the inhibiting input of the generator 18 pulses, to the permitting input of which through the third element OR 19 under lyucheny second and third outputs of the control units 6, 18 of the pulse generator output is connected. to the third input of the second element OR 11.

The magnetic recording device operates as follows.

When the device is turned on in the “Record” mode, the state of the decoder 13 is such that the first channel of recording of the first magnetic recording device 1 is connected to the information bus 16 through one of the keys 14. If it is necessary to record on any other track of the magnetic recording apparatus 1 and 2, the second or third output of the control units 6 is given the command to select the recording track in the form of a voltage pulse, which comes through the third element OR 19 to the enable input of the pulse generator 18. The duration of this pulse is determined by the pressing block in the control buttons 6 for selecting a given ^before: horns recording. During the time the button is pressed, the following occurs. With the appearance at the permissive input of the generator of 18 potential pulses, pulses appear at its output, which through the element OR 11 arrive at the input of the counter of 12 pulses. The decoder 13 converts information about the number of pulses coming from the counter 12 into a position code. The outputs of the decoder 13 are connected to the control inputs of the key elements 14 and 15 and the information inputs of the multiplexer 17, i.e. a unique relationship is formed between the number of pulses arriving at the input of the counter 12, the values of the positional code at the output of the decoder 13 and the number of the recording channel connected to the key elements 14 and 15 (the selected recording track). The generator 18, the counter 12 and the decoder 13 produce a sequential enumeration of the values of the position code until the output of the decoder 13 shows the value of the position code corresponding to the code of the selected recording track. This correspondence is established by multiplexer 17, one of the control outputs of which is given a command to select a track, whose presence at this input determines the value of the position code, when it appears at the information inputs of multiplexer 17, the latter at its output generates a signal prohibiting the operation of the pulse generator stops, stops iterating the position code values. After releasing the button for selecting this recording track, the resolving potential is removed from the 18 pulse generator. Thus, a pre-selection of the registration track is carried out.

To simplify further description

work suppose that pre

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The second track of the first magnetic recording device was selected.

In the process of recording, the input signal to be recorded from the input bus 16 through the second key element 14 is fed to the second recording channel of the first magnetic recording device 1 formed by the series connection of the recording amplifier 3 and the recording head 4. When the sensor 5 triggers the end of the magnetic carrier, the signal from it arrives at the first input of the control unit δ of the first magnetic recording apparatus 1, which starts the second magnetic recording apparatus and starts the first one-shot 7, the output pulse of which enters through s element OR to the input "Stop" unit 6 controls the first device 1 magnetic recording.

Simultaneously, the output pulse of the one-shot 7 enters through the element OR 11 to the input of the counter 12, after which the decoder 13 opens the second key element 15 and the recording continues on the second track of the second device. 2 magnetic recordings. At the same time, the pulse of the first one vibrator 7 starts the second one vibrator 9, during the duration of the output pulse of which the magnetic medium is rewound on the first magnetic recording apparatus 1 from the receiving node to the input one. At the end of this pulse, the third one-shot 10 is triggered, the pulse from which, through the element OR 8, stops the first magnetic recording device 1. The first device 1 magnetic recording is ready for subsequent recording.

Claims (1)

Claim A magnetic recording device containing the first and second magnetic recording devices, each of which has in its composition two recording channels formed. a series connection of recording amplifiers and recording heads, an end sensor for magnetic media, connected to the first input of the control unit, the first output of which is connected to the "Enable recording" input of the control unit of another magnetic recording apparatus and to the input of the first one-vibrator, the output of which is connected to the first input of the first OR element and the input of the second one-vibrator, whose output is connected to the "Rewind "the control unit and the input of the third one-shot, the output of which is connected to the second input of the first element OR, the output of which is connected to the input" Stop "of the control unit, the outputs of the first one-shot first and second about Apparz; This magnetic recording is connected to the first and second inputs of the second element OR, the output of which is connected to the input of the pulse counter, the outputs of which are connected to the corresponding inputs of the decoder, the outputs of which are connected to the control inputs of the key elements, the information inputs with the information bus, the outputs of the key elements are connected to the inputs of the corresponding recording amplifiers, characterized in that, in order to expand the functionality of the device by providing the possibility the choice to record any of the tracks on a magnetic medium, a pulse generator, a third OR element, a multiplexer are entered, the second and third outputs of the control units are connected to the corresponding control inputs of the multiplexer, whose information inputs are connected to the corresponding outputs of the decoder, the output of the multiplexer is connected to the inhibitory input of the generator pulses, to the permitting input of which the second and third outputs of the control units are connected through the third element OR, the output of the pulse generator is connected to t etemu input of the second OR gate. 45 1660042 Block upr- (6) byk.2 or byk.Z selection button pressed Xu rothki (for example;, s) - * g Pulse generator output 18 Fri (outputs sc <g (PCCiCo12 (Entries of the Ieshisrrator) tshrro & s Combinations C0 01 ι I I ι I ί oo <o | os> '* I, • ь Outputs Eaisrrato 13 (ifhm.kh4tiplexara {?) Position ks> 9 og LTD! 00 * 0; 0 <OO). ChroBlvuiyie & hoEs multiplexer ♦ Choice LLC code! In kδορ 2-meaorvm ", koo oo! <, Choice 3 -" * chvro "| KoZ from Vyzr A-vistorozh 'Ko3 ιοοσ V £ Output Multiplexer Ban 2