SU822251A1 - Multichannel recording and reproducing apparatus - Google Patents

Description

(54) MULTI-CHANNEL DEVICE

FOR RECORDING AND REPRODUCTION OF INFORMATION

Mechanism connected between the outputs of the recording location and the inputs of the decode unit of the corresponding channel, the support element and serially connected to the outputs of the decoders block, the time offset offsets, the read address generator and the standalone adder, the information entry address generator connected between the first output of the offsets and the first offsets the input of the memory block, the second input of which is connected to the second output of the block of sampling of time offsets, and also connected between the third output of this block and the second input of the autonomous adder is the shaper of the addresses of reading from the tape marking signal, and in addition, a tape marking unit is inserted in the device, which is connected to the frequency divider, the second and third inputs of all the channel recording blocks, the frequency multiplier, the input of which is associated with the first the output of the block is the time shift of the first channel, and the output is with the output bus of the clock pulses, and in series with the outputs of all autonomous adders the comparison unit and the tape speed corrector, the outputs of which are these are connected to the control inputs of the autonomous lenses, from the mechanisms, the output of the autonomous adder of the first channel is connected to the third input of the memory unit and the input of the delay element of this channel, and the output of the delay element of each channel is connected to the third input of the memory unit and the input of the delay element of the subsequent channel.

The drawing shows a functional diagram of the device.

The device contains n channels 1 and 2 (for the sake of clarity, 2 channels are shown, each channel implies an apparatus for recording and reproducing an information signal and a tape marking signal), a divider 3 frequencies, the input of which is connected to the input of the information separation unit 4, the unit -5 ribbons markings, in series connected the comparison unit 6 and a carrier speed equalizer 7, a delay element 8, an adder 9 and a frequency multiplier 10. Each channel 1 contains a recording unit 11, the outputs of which are connected via a tape drive mechanism 12 and a block 13 of decoders to the inputs of a block 14 of sampling time offsets. The third input of the block 14 sample time offsets connected to the third output of the block 13 decoders. The first output of time offset block 14 is connected via the address shaper 15, connected to the first input of the memory block 16 and, via .fpp, retrieves 17 read addresses to one of the I (18) of the autonomous cyi iMator 18, the second output is connected to the second input memory 16 directly, and the third output through the driver 1 read addresses from the tape marking signal 19 with another input of the autonomous adder 18. The first inputs of the write blocks 11 of each channel 1 and 2 are connected to the corresponding outputs of the information separation unit 4, and The second inputs of the recording units 11 are connected to the output of the splitter 3 frequencies and through the tape marking unit 5 are connected to their third inputs. The output of the autonomous adder 18 of each channel 1 and 2 is connected to the speed corrector 7 of the tape drive through the comparison unit 6, the outputs of which are connected to the control unit ; mechanisms of 12 corresponding channels, and the output of the autonomous adder 18 of the first channel 1 are connected to the third input of memory channel 16 of its channel and through delay element 8 it is connected with the third input of memory 16 others GoGo channel 2. The outputs of blocks 16 of each memory channel 1 and 2 are connected to respective inputs of the adder 9, and the input frequency multiplier 10 is connected to the first output unit 14 sampling time offsets channel 1.

The input information is divided into streams using the information sharing unit, and the information content of the flow is selected on the basis of recording on one magnetic carrier. The synchronization input pulses, which are fed to the tape marking unit, are divided by the number equal to the number of streams. This block performs the partitioning of synchronization pulses in the n zone, and each zone has its own binary code signal. This signal, as well as the information signal, goes to a recording unit, where, with the help of shared synchronization pulses, they are converted into a readable type (for example, Miller code type). After decoding and eliminating in each channel the temporal displacements between the information signal and the tape marking signal, the information signal is stored in the memory by information address pulses, formed from the synchronization pulses restored in each channel, T. e. recording in the memory is made by the addresses of entering its channel.

Claims (2)

The information from the memory blocks of all channels is read out by the total read address pulses generated from the recovered sync pulses in the read address generator of one of the channels and the generated read addresses from the tape marking T. of the same channel, and the information is read from its memory block it is realized by the above readings not directly, but from memory blocks of other channels by the same readout addresses, but shifted by LN where N is the number of channels, 1 is considered to anal, T - clock interval. For example, with 5 channels of registration for the 1st channel (l 0) for the 2nd channel CjaA fT for the 5th channel. When generating the read addresses with the highest-order bits, the addresses formed from the tape markup signal. Since in the proposed device there is one tape marking unit, the device will function correctly only if the bits of the read address pulses match or at least differ by an amount equal to half the memory capacity. In the event that the read addresses are different from each other, the comparison unit generates a mismatch signal, which is fed to the carrier speed offset. Corrector with carrier growth reduces the speed of one and increases the speed of the other device until the reading addresses become the same or close. The output signals from the memory blocks in the adder are converted to the form of the information signal at the input of the device. A frequency multiplier is used to bring the frequency of the recovered clock pulses to the frequency of the input clock pulses. Thus, the proposed device, from the point of view of technical and economic indicators, solves the problem of increasing the information content of magnetic recording devices. Claims: A multichannel device for recording and reproducing information comprising a block of input information, the first input of which is connected to the input information bus, the second input - to the input of a frequency divider and the input bus of clock pulses, and the outputs - to the first input; Each of the channel recording blocks, decoder blocks, the number of which is equal to the number of channels, as well as the summator, whose inputs are connected to the outputs of the channel blocks .., and the output to the output information bus, characterized in that In this information, a stand-alone tape drive mechanism is inserted in each of the channels, connected between the outputs of the recording unit and the inputs of the decoders block of the corresponding channel, the delay element and the sampling block connected in series with the outputs of the decoders block offsets, read address shaper and standalone adder, information entry address shaper included. between the first output of the time offset sample block and the first input of the memory block, the second input of which is connected to the second output of the time offset sample block, and also connected between the third output of this the block and the second input of the autonomous adder, the address driver is read from the tape markup signal, and in addition, a tape dispenser block, connected between the output of the splitter, you, the second and third inputs of all the channel recording blocks, the frequency multiplier whose input is connected to the first output of the sampling unit of the time shifts of the first channel, and the output to the output bus of the clock pulses, and the comparison unit and the tape speed corrector connected in series with the outputs of all autonomous adders The outputs of which are respectively connected with the control inputs of the independent tape mechanisms, while the output of the independent accumulator of the first channel is connected to the third input of the memory unit and the input of the element back e rzhki this channel, and the output of the delay element of each channel is coupled to a third input of the memory and the input of the subsequent channel delay Elem. Sources of information, rintye taken into account in the examination 1.ABTOpcKoq USSR certificate 3.69612, cl. .G 1 1 B 5/00, 10.19.70. 2. US patent number 3961368, l. 360-48, published. 06/01/76 (protype).