JPS5815875B2 - position signal recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention records a position signal on a position signal track for automatically searching for recorded information on a main track for recording information such as audio signals and data signals, and selectively reproducing information. The present invention relates to a position signal recording device, and in particular, it is an object of the present invention to provide a position signal recording device that does not record the same position signal repeatedly or in the wrong order.

When recording a position signal, first perform an operation to specify the address to be recorded, or perform a recording command operation while doing so to finish recording one position signal, but when recording a position signal subsequently, the next recording There was a risk that the user would not know which address the desired position signal was, and that the same position signal would be recorded twice or recorded in the wrong order.

The present invention has been made in view of the above, and when an operation for specifying the address of the position signal to be recorded is first performed and then a recording command operation is performed, the position signal corresponding to the address specifying means is recorded, and then the next The number of position signals to be recorded is stored, and from then on, by repeating the recording command operation without any address designation operation, the position signals are increased one by one and recorded.

The present invention will be described below with reference to the drawings.

The drawing is a block diagram showing an embodiment of a position signal recording device according to the present invention.

In the figure, 1 (11~In) is an address designation means,
One terminal of each is commonly grounded, and the other end is connected to the input terminal of the encoder "2," respectively.

An encode output terminal of the encoder 2 is connected to a parallel input terminal 4 of a storage means 3, and an ENABLE output terminal 5 is connected to a one-shot multivibrator T via a delay circuit 6.

The output terminal of the one-shot multivibrator 7 is connected to the LOAD terminal 8 of the storage means 3.

Reference numeral 9 denotes a recording/writing command means, one end of which is grounded, and the other end connected to a set terminal G of a flip-flop circuit (hereinafter referred to as FF) 1'0'.

The output terminal of the FF circuit 10 is the control terminal 12 of the oscillation means 11.
It is also connected to the one-shot multivibrator 13 and roughly connected to the gate terminal of the counting means 17.

The output terminal of the one-shot multivibrator 13 is connected to the series input terminal 14 of the storage means 3.

An output terminal 15 of the oscillating means 11 is connected to the recording head 16 and to an input terminal of the counting means 17.

Reference numeral 18 denotes a comparing means, whose negative input terminal 19 is connected to the output of the storage means 3, and its other input terminal 20 is connected to the output terminal of the counting means 17.

Reference numeral 21 is an output terminal of the comparison means 18, which outputs a logic "1" when the two forces are equal.

This output is connected to the reset terminal of the FF circuit 10 via the inverter 22.

In addition, the parallel input line and output line of the storage means 3, counting 1,000 stages.
Although there are a plurality of output lines (e.g., eight) in No. 7, they are simply shown with thick lines.

Next, the operation of the position signal recording device having the above configuration will be explained.

When recording a position signal, first address designation means 1 (from 1st
In).

Then, the encoder 2 operates, and the operated address specifying means 1
An output corresponding to is generated at the parallel input terminal 4 of the storage means 3.

At the same time, the ENABLE terminal 5 becomes logic "0" and its output drives the one-rayott multipibrator 7 via the delay circuit 6, and generates the LOAD signal at the LOAD terminal 8.

As a result, the encoded output of the encoder 2 is transferred to the storage means 3.
is memorized.

Next, when the write command means 9 is operated, the FF circuit 10 is set and its output becomes logic "1", the counting means 17 is enabled to count, and the oscillation means 11 starts oscillating.

The output of the oscillating means 11 is recorded on the magnetic tape by the magnetic head 16 and counted by the counting means 17.

The storage result of the storage means 3 and the counting result of the counting means 1T are compared by the comparison means 18, and when the number of output pulses of the oscillation means 11 becomes equal to the value stored in the storage means 3,
A logic "-1" is output to the output terminal 21 of the comparing means '18, and the FF circuit 10 is reset via the inverter 22.

Therefore, the control terminal 12 of the oscillating means 11 becomes logic "0" and the oscillating means 11 stops, and the oscillating means 1 outputs the number of pulses of the position signal corresponding to the first operated address specifying means 1, and the magnetic head 16 on the magnetic tape.

Further, when the output of the FF circuit 10 changes from logic "1" to "0", the one-shot multivibrator 13 operates and generates one pulse to the serial input terminal 14 of the storage means 3, and the storage means 3 is initially The number of position signal pulses +1 corresponding to the address designation operation is stored.

. Therefore, when the recording command means 9 is operated next time, in the same process as described above, it is possible to record pulses corresponding to the first operation and the number of position signal pulses corresponding to the address designation operation +1.

Further, when the recording command means 9 is repeatedly operated, the position signal increases sequentially and is recorded.

As described above, according to this configuration, when the recording command means is operated subsequent to the operation of the address specifying means, position signals corresponding to the operated address specifying means are generated and recorded, and the number of position signals corresponding to the operated address specifying means is generated and recorded. number of pulses + 1] is memorized.

Therefore, when the recording command means is operated subsequently, a signal equal to the number of previously recorded position signal pulses + 1 is recorded, so it may become unclear which address the position signal should be recorded next, or the same position signal may be recorded repeatedly. Therefore, it is possible to provide a position signal recording device that does not record data in the wrong order.

[Brief explanation of the drawing]

The drawing shows a block tooth showing an embodiment of the position signal recording device according to the present invention. 1 (II”n)... Address designation means, 3...
...Storage means, 9...Record command means, 11...
...Oscillation means, 17...Counter, 18.
...A means of comparison.

Claims (1)

[Claims] 1 In order to distinguish the position of the magnetic tape, the number of pulses corresponding to the address is recorded as an address signal, and the address designation operation corresponding to the position to be recorded is first performed, and then the recording command operation is repeated. A position signal recording device characterized in that the position signal is sequentially increased and recorded by i'.