SU1061159A1 - Device for monitoring and correcting information - Google Patents

Abstract

The DEVICE FOR CONTROL i.INFORMATION CORRECTION, containing serially connected first block of elements AND, first register, switch, shift register and second block of elements AND, is connected to the first input of the first block of elements AND, the second and third inputs connected; respectively, to the first output of the operating mode block and the output of the signal conditioning unit, ready, the playback head connected to the second register input, the recording head connected to the output of the first register, directly input connected to the input of the first delay element, comparison unit, output connected to to the first input of the readiness signal generation unit directly, and to the second input of the second block of the And elements and to the input of the second delay element — through the overwriter of the overwrite signal, the corrective unit lines, the output of which is the output of the device, and the first, second and third inputs of the line correction block are connected to the first, second and third inputs of the comparison block, respectively, and the third delay element, while the inputs of the operating mode block, the fourth input of the first block The elements And and the second input of the ready signal forming unit are the device inputs, the output of the ready signal forming unit is an additional output of the device; the second input of the comparison unit is connected to the second input of the switch and the second output of the operation mode block, and the third input of the comparison unit is connected to the third input of the switch, so that it is, in order to increase the TO4HocTJt control, in It has an AND and OR element, the third and fourth blocks of the AND elements, and pulse shapers for recording and playback tracking, with the output of the playback tracking pulse generator connected to the first inputs of the third and fourth blocks of AND elements and to the input (L of the third element that delay, the output of which, successively connected elements AND and OR, are connected to the control input of the shift register, the second inputs of the third and fourth blocks of the elements AND, are connected respectively to the outputs of the shift register and the second register, the input side-shifter input is connected to the input of the second register, the output of the third block of elements and is connected to the first input of the comparison block, the output of the fourth block of elements: d com and is connected to the third input of the line correction block, the second input one OR element is connected to the output of the first stub element, the input connected to the output of the tracking pulse generator, the first, second and third inputs of which are connected respectively to the output of the second delay element, the third input of the first AND block and the first output of the operating mode block, and the fourth input The tracking pulse generator is an additional input to the device (device.

Description

The invention relates to magnetic recording, in particular, to devices for monitoring and correcting information.

A device for monitoring and correcting information is known, comprising recording and reproducing blocks, recording and reproducing registers, a shift register, sug 1mators, and a saliboc detection unit l.

A disadvantage of the known device is the low accuracy of information control due to low reliability of operation.

It is also known to control and correct information containing the first and second blocks of the And elements, the recording head and the vocabulary connected to the first and second registers, respectively, the first, second and third delay elements, the serially connected switch and the shift register, operating mode blocks. forming a ready signal, comparing and correcting lines, the output of the latter being the output of device 2,

However, the accuracy of control of the information specified device is not high enough due to the need for external synchronization of the process of recording information leads to a decrease in reliability.

The purpose of the invention is to improve the accuracy of control information.

To achieve this, the device for monitoring and correcting information, containing the first AND unit block, the first register, the switch, the shift register and the second block of And elements, are connected to the first input of the first block of And elements, and the second and third inputs are connected to the first output of the operation mode block and the output and output of the ready signal generation unit, the playback head connected to the second register input, the recording head connected to the output of the first register, by the input of the first delay element connected to the input, the comparison unit, the output connected to the first input of the readiness signal generation unit directly, and to the second input of the second block of elements And to the input of the second delay element — through the overwriter shaper, correction unit: rows, the output of which is the output of the VST, and the first, second and third inputs of the line correction block are connected respectively to the first, second and third inputs of the comparison unit, and the third delay element, while the inputs of the re are The operation press, the fourth input of the first AND block and the second input of the ready signal generation unit are the device inputs, the output of the ready signal generation unit is an additional output of the device, the second input of the comparison unit is connected to the second input of the switch and the second output of the operation mode block, the input of the block of comparison is connected to the third input of the switch, introduced the tents of AND and OR, the third and fourth blocks of the elements of AND, and the formers of the pulses accompanying recording and reproduction, and the output of the playback accompaniment pulse generator is connected to the first inputs of the third and fourth blocks of the AND elements and to the input of the third delay element, the output of which is connected to the control input of the shift register through successively connected elements AND and OR of the second blocks of the AND elements connected to the outputs of the shift register and the second register, respectively, the input of the pulse maker of the playback playback is connected to the input of the second register, the output of the third block of elements And is connected to the first input of the comparison unit, the output of the fourth block of the AND elements is connected to the third input of the line correction block, the second input of the OR element is connected to the output of the first delay element, the input connected to the output of the recording tracking pulse generator, the first, second and third inputs of which are connected respectively, to the output of the second element of the delay, the third input of the first block of elements AND, and the first output of the operating mode block, and the fourth input of the tracking pulse maker is Modes input device.

The drawing shows a structural diagram of one of the possible variants of the proposed device.

The device for monitoring and correcting information contains the first And 1 unit 1, the first register 2, the switch 3, the shift register 4 and the second block 5 And elements, output connected to the first input of the first block 1 And elements, the second and third inputs connected to the first output of the operation mode block b and the output of the ready signal generation unit 7, the playback head connected to the second register input 9, the recording head 10 connected to the output of the first register 2-, the second input connector nnogo with the input of the first delay element 11, blok12 comparison, outputs coupled to the first input of forming unit 7 gotovnos signal. directly and to the second input of the second block 5 of the AND elements and to the input of the second delay element 13 through the overwriting shaper 14, the line correction unit 15, the output of which is the output 16 of the device, and the first, second and third inputs of the correction line 15 connected respectively to the first, second and third inputs of the comparison unit 12, and the third element 17 is delayed, while the inputs of the operation mode block 6, the fourth / input of the first block 1 of the elements I, and the second input of the ready signal generation unit 7 are the inputs of the device , the output of the ready signal form unit 7 is an additional output 18 of the device, the second input of the comparison unit 12 is connected to the second input of the switch 3 and the second output of the operation mode block 6, and the third: the input of the comparison unit 12 is connected to the third input of the switch 3, moreover , contains the elements AND and OR 19 and 20, the third and fourth blocks 21 and 22 elements AND, and the formers 23 and 24 of the recording and playback tracking pulses, the output of the imaging device 24 pulses of the playback playback being connected to the first inputs of the third and the fourth blocks 21 and 22 of the AND elements and the K-input of the third delay element 17, the output of which through the series-connected elements AND and OR 19 and 20 are connected to the control input of the shift register 4, the second inputs of the third and fourth blocks 21 and 22 of the AND elements respectively, are connected to the outputs of the shift register 4 and the second register 9, the input of the patterns of the 24 playback tracking pulses is connected to the input of the green register 9, the output of the third block of 21 elements. And connected to the first input of the comparator unit 12, the output of the fourth unit of the 22 Elements And connected to the third input of the line correction unit 15, the second input of the IDN element 20 is connected to the output of the first delay element 11, the input connected to the output of the recording tracking pulse generator 23, The first, second and third inputs of which are connected respectively to the output of the second delay element 13, the third input of the first block 1 of the elements AND, and the first output of the block 6 of the work mode, and the fourth input of the former 23 pulses of the recording tracking is an additional input device. In the information recording mode, it enters the first register 2 through the first block 1 of the elements AND, subject to the supply of the corresponding signals from blocks 6 and 7 of the operating mode and the formation of a ready signal. The signal from the output of the write tracking pulse generator 23 rotates the first register 2. The information signals from the output of the first register 2 arrive simultaneously at the input of the shift register 4 through the switch 3 and to the recording head 10. The advancement of information by the shift register 4 is carried out by means of pulses delayed by the first delay element 11. After a certain number of recorded lines, the first recorded line of information is reproduced by the playback head 8 and stored in a second register 9, while its recorded value is stored in shift register 4. With a playback tracking pulse generator 24, an playback tracking pulse is generated on the information line containing an odd number of units, which gates the transmission of information to the first input of the comparison unit 12 from the shift register 4 through the third block 21 of the AND elements and to the third input of the comparison block 12 through the fourth block 22 elements And from the output of the second register. If the reproduced and recorded information is not identical, the device’s readiness signal is removed from the output of the ready signal generation unit 7, using the rewriting signal generator 14, the correct information from the output of the shift register 4 to the input of the first register 2 is received through the first and second blocks 1 and 5 also the formation of the delayed second element 13 of the pulse delay at the input of the imager 23 pulse tracking recording. In this case, the information line is supplemented with a rewrite feature on the additional track of the recording medium. In the playback mode, which is set by the operation mode block 6, the information from the output of the second register 9 is gated using the playback tracking pulse generator 24 when it is recorded through the fourth block of 22 elements AND to the third input of the line correction block 15 and through the switch 3 to the register 4 shear. Block 15 correction line analyzes the information of the lines recorded in the shift register 4 and the second register 9. If the line at the output of the second register 9 contains a sign of overwriting, then the output

The i16 of the device passes the signal from the second register output 9, and otherwise, the signal from the output

register 4 shift.

The use of the invention allows to significantly improve the accuracy of control information, simplify and improve the reliability of the information control process.

/ ff

Claims (1)

./ DEVICE FOR CONTROL ^! I. INFORMATION CORRECTION, containing the first block of AND elements, the first register, the switch, the shift register and the second block of AND elements connected in series, with an output connected. connected with the first input of the first block, elements and, the second and third inputs respectively connected to the first output of the operating mode block and the output of the ready signal generating unit, a playback head connected to the second register input, a recording head connected to the first register output, the second, an input connected to the input of the first delay element, a comparison unit, an output connected directly to the first input of the ready signal generating unit, and to the second input of the second block of AND elements and to the input of the delay element — through the rewriter of the rewrite signal, the line correction unit whose output is the output of the device, and the first, second, and third inputs of the line correction unit are connected respectively to the first, second, and third inputs of the comparison unit, and the third delay element, while the inputs of the block operation mode, the fourth input of the first block of AND elements and the second input of the ready signal generating unit are the inputs of the device, the output of the ready signal generating unit is an additional output of the device; the second input of the comparison unit is connected to the second input of the switch and the second output of the unit of operation mode, and the third input of the comparison unit is connected to the third input of the switch, which is all / so that, in order to increase the accuracy of control, it the element ^ AND and OR, the third and fourth blocks of AND elements and pulse shapers for accompaniment of play and input are introduced, and the output of the pulse shaper of accompaniment for playback is connected to the first inputs of the third block of elements to the third element whose output,. through the tightly connected elements, the ith OR is connected to the control input of the shift register, the second inputs of the third –5th and fourth blocks of elements –– are connected respectively to the outputs of the shift register and the second register, “I input of the pulse reproduction guide * is connected to the input of the second register, the output of the third block of elements AND is connected to the first input of the block sr'avne- * Q and a fourth ® And to the input of the delay, the sequence, the output of the fourth block of elements AND is connected to the third input TsL of the line correction block, the second input of whose, element OR is connected to the output of the first delay element connected to the output of the pulse follower , the first, second and third inputs of which are connected respectively to the output of the second delay element, the third input of the first block of AND elements and the first output of the operation mode block, and the fourth input of the pulse-former of the recording tracking pulse Yelnia entrance ustyavlyaetsya 1 device.