SU593237A1 - Digital information magnetic recording method - Google Patents

Description

one

The invention relates to the field of magnetic recording, in particular to devices for magnetic recording of digital information.

A device for magnetic recording of digital information containing an input bus of digital information associated with a recording signal shaper connected to a recording head and a buffer memory block connected through a memory filling pulse shaper with a stepper signal moving shaper connected to the node of the stepping movement of the magnetic tape, on the shaft of which a pulsed angular polarity sensor 1 is fixed. The known device provides for recording digital information during the stepping emeschenii tape, but it has a complicated structure.

It is also known a device for magnetic recording of digital information, comprising a node for moving the magnetic tape, on whose shaft the first of the pulse position angle sensors is fixed, an AND circuit, the first of whose inputs are connected to an input write command bus connected to a buffer register connected to the input bus digital information and with the input of the current writing device connected to the recording head, the OR circuit, the counter, the trigger and the ready signal output bar

to record 2. This device has a fairly simple design, but it does not provide high noise immunity.

The purpose of the invention is to increase the noise immunity of the device for magnetic recording of digital information.

This is achieved due to the fact that in the proposed device, the first and second angular polarity pulse sensors are connected via an OR circuit to a second input of an AND circuit connected through a counter to the trigger input, the output of which is connected to the output signal of the readiness signal for recording and to the recording current driver .

The drawing shows a variant of the proposed device for magnetic recording of digital information containing a node 1 of step-by-step movement of a magnetic tape 2, on the shaft of which a first impulse sensor 3 of angular position is fixed. The output of the first pulse sensor 3 is connected to one of the inputs of the circuit OR 4, the other input of which is connected to the output of the second pulse sensor 5 of the angular position, mounted on the shaft of the node 6 of continuous movement of the magnetic tape 2. The output of the second pulsed sensor 5 of the angular position is also connected to the node 6 continuous movement of the magnetic tape 2 through the unit 7 installation and tracking.

The proposed device also contains an AND 8 circuit, the first input of which is connected (f by the input bus 9 write commands connected to the control input of the buffer register 10 connected to the input bus I. Digital information. The buffer register 10 is connected to the writing current driver 12 associated with a magnetic recording head 13, coupled with a magnetic tape 2. Magnetic tape 2 is also associated with a magnetic reproduction w, with its head 14 connected to the output of an erase current shaper 15.

The OR 4 circuit is connected to the second input of the AND 8 circuit, the output of which is connected via counter 16 to a single trigger input 17. The trigger output 17 is connected to the output 18 signal of the readiness signal for recording and to the control input of the recording current driver 12.

in the proposed device, the counter 16 npq counts the pulses arriving at it from the first and second pulse sensors 3 and b. Counter 16 generates an output signal when the number of these pulses reaches | r the number corresponding to the distance between erasing 14 and 13 recording heads. In this case, the output of the trigger receives a ready-to-write signal, which allows digital information to pass through the driver 12.

The use of the invention provides a simple construction of a device for magnetic recording of digital information.

Claims (2)

1. US patent number 3454930, class. 340-172.5, 1969. 2. For the number 2118184/10, M. Cl. G 11B 5/09, 1975, by which the decision to issue an author's certificate was made.