SU862196A1 - Device for recording code information onto magnetic tape - Google Patents

Description

..one

The invention relates to instrument making - to devices for recording onto multi-track magnetic carriers of code signals by the dual-frequency method; can be used in automated measuring and computing systems for collecting and subsequent deterministic and statistical processing of experimental data, etc.

A device is known that permits the recording of code signals by a multi-track magnetic recorder, where parallel recording of the code signal fll is usually used.

The recording density on magnetic media in such a device is low and is determined by the characteristics of the tape transport mechanism. It depends mainly on the skew of the tape relative to the slit of the block of magnetic recording heads. It is known that during sequential recording the density can be significantly increased, since the effect of skewing in this case has almost no effect. Such a recording method is used in single-channel devices having insufficient surface recording density.

Closest to the proposed device for recording code information on a magnetic tape containing a source of information signals on the number of channels, a control unit associated with it, and also recorders, the number of which is equal to the number of carrier tracks, respectively

to through recording amplifiers to a block of magnetic recording heads 21,

The disadvantage of this device is low dense; the recording is due to the maximum value of the 15th skew of the magnetic tape.

The purpose of the invention is to increase the recording density of multi-track magnetic media.

The goal is achieved by

20 that in a device for recording code information on a magnetic tape containing a source of information signals on the number of channels, a control unit associated with it, as well as recorders, the number of which is equal to the number of carrier tracks, respectively, connected via recording amplifiers to a block of magnetic heads records, sublawed distributor of parallel code information, as well as shift registers according to the number of tracks. the write registers of the shift registers are connected to the corresponding outputs of the roadside distributor of parallel code information, the control input of which is connected to the switching output of the control unit, and the output of the clock pulses of the latter are connected respectively to the control inputs of the shift registers whose outputs are connected to the corresponding signal conditioners records

FIG. Figure 1 shows the electrical circuit diagram of a device for recording code information on a magnetic tape.

The device includes a source of information code signals 1, a subarray distributor of parallel code information 2, double led registers 3, writing signal formers 4, recording amplifiers 5, a block of magnetic recording heads b with a transport mechanism magnetic tape 1 and a control unit 7, such as signal recorder drivers, which, of the input code signals received sequentially (bit by bit), form at the output two-frequency modulated (with square carrier) signals for the dual-frequency method of recording on a magnetic tape.

The source of the information code signals 1 is connected to the input of the track distributor of the parallel code information 2, the outputs of which are connected to the write bus of the shift registers 3, which are connected to the output through the drivers of the recording signals 4 to the recording amplifiers 5, which, in turn, are connected to the unit 6 magnetic recording heads. In this case, to control the write cycles, a control unit 7 is used, which is connected to the source of information code signals 1, with a sub-distributor of parallel code signals. in 2 and with shift registers 3.

The device works as follows.

The source codes of the information signals 1, which have n bits, in parallel form with a clock frequency are sent to the track distributor of parallel code signals 2, from whose open output from information signals on the write buses (per clock cycle) is entered into the first shift register 3. This register with the same clock frequency, coming from the control unit 7, the code in a sequential form is fed through the shaper 4 to the recording amplifier 5 and during the time of p / $ T is registered on the first track of the magnetic carrier.

During the second, third, etc. clock cycles, the code signals from the source of information signals through the subarray distributor of parallel code information 2 according to the switching signals from the control unit 7 are successively entered into the corresponding shift registers 3 along the remaining tracks (2, 3, .... V4). By the Ty-t (n) p / f moment, when the first shift register was released, all other registers except the last one are partially filled. At the next time moment -t (h + 1)

5, the podorotechny distributor of the parallel code information 1 2, the code from the source of information signals is entered into the first shift register 3 already released on the first track,

0 During this cycle, the second shift register is released, which is filled in the next cycle t (and + 2), and so on. Thus, each of the code signals from the source of information signals is recorded in a sequential form along its track with a recording rate of one bit equal to the frequency of the codes at the input, and following each other codes - on. adjacent tracks with a shift by one

D recording cycle, as shown in FIG. 2,

The clock frequency of the control unit is determined by the density-record 0 (bits per 1 mm), the speed of movement

5 magnetic carrier V (mm to sec) and must be not less than the clock frequency of issuing codes from the source of code information signals fy. : t, e, qy f c. One of the tracks is used to record clock pulses and a marker signal.

The use of the invention allows to significantly increase the storage capacity of the storage device with an increase in the density of the recorded code signals.

5 Longitudinal and superficial recordings in this device are significantly increased, which allows either to reduce the consumption of a magnetic tape or to record codes that arrive at a fixed tracking frequency, which cannot be recorded on existing devices.

55

Claims (1)

1.Gitlits M.V. Magnitna entry in information transmission systems. M., Sw., 1978, p. 64-68. 2, Technical description of ASTRA-144 equipment. Kiev, factory Ma to (LShch1.758.015 - THAT and OP), p. 3 (prototype) Y1 Il212 Z L. LS.S.ti.k.T.t 109 S. Si ffff f08 Fia.g.