JPS5832248A - Position controller for magnetic tape of magnetic recorder and reproducer - Google Patents

Abstract

PURPOSE:To perform a lenguage practice, etc. with a simple operation, by rewinding automatically a magnetic tape to a desired position when the tape is shifted to a prescribed position. CONSTITUTION:An answer language is pronounced and recorded on a magnetic tape 6 in response to the reproduced teaching language, and an LL mode switch, etc. is operated for practice. Thus the tape 6 is rewound. Then the position of the tape 6 for the stop of rewinding, the start of reproduction, etc. is controlled via a circuit 31 and accompanied with the coincidence secured between the storage quantity of the tape shift extent obtained by an arithmetic circuit 31 connected to a storage circuit 30 based on the terminal position signal and the initiation searching signal recorded on the tape 6 via a frequency detecting circuit 28 and the tape shift extent calculated in response to the count value of detecting pulses which are delivered from a tape travel amount detector 20. In such way, a language practice, etc. is possible with an automatic control of the tape travelling and a simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a magnetic tape position control device in a magnetic recording and reproducing device capable of transporting a magnetic tape in a play mode and a rewind mode. Device(
(hereinafter referred to as LL device) is suitable for application. 1 1. In the L device, the learner speaks based on the teaching audio recorded in advance on a magnetic tape VC and records it for language pronunciation practice, but in this case, the learning audio and Learner's 1. It is necessary to compare the sound with the sound to judge whether it is good or bad, and after recording the sound, the magnetic tape must be rewound to the initial position and played back from this position.

However, if this operation is performed manually, in order to rewind the magnetic tape to its initial position, rewind the tape an appropriate amount, play it back, and use the playback sound to determine whether or not it is at its initial position. If not, the magnetic tape must be rewound further, or if it has gone too far, it must be fast forwarded to find the initial position, making this operation complicated and hindering effective learning.

The present invention is a novel tape position control device for a magnetic recording/reproducing device that can eliminate the above disadvantages by automatically rewinding the magnetic tape to the desired position Llc when the magnetic tape is transported and delayed to a predetermined position. ! This is what we intend to offer.

The drawings below apply to the fLL device of the present invention in the following case 1.
1! This will be explained as an example.

In Fig. 1 external view of the FiLL device, 6 indicates tllF! The main body of the device, (2) is a cassette type magnetic recording and reproducing device, (3)
(Sb) is the key switch for normal operation, (5c) is the key switch for rewinding (5c)
) is the key switch for play, (sen is the key switch for fast forwarding, (5・) is the key switch for chime, and (5f) is the key switch for eject. 1 Play like a normal cassette magnetic recording/playback device. The K axis (4R) and the capstan (5) rotate in the counterclockwise direction, and the capstan (S) and the K pinch roller (the capstan rotates in contact with the magnetic tape). (
6) to the right, a play mode is obtained in which the magnetic recording/reproducing head (7)K reproduces the audio signal recorded on the magnetic tape (6)K, and by suppressing the stop command switch (5a), the magnetic tape ( Transfer of the current item is stopped. Also, the key switch (5b) for rewinding or fast forwarding (also
(3d)), the magnetic tape (6) is transported leftward (or rightward) at high speed to obtain rewind mode (or fast forward mode).Furthermore, the recording key switch (3C) and the play key switch (5C ) at the same time moves the magnetic tape (6) to the right at a constant speed of 18 degrees.
A recording mode is obtained in which audio notes are recorded on the magnetic tape (6) using the magnetic head (7).

Switching between each mode is performed by operating a built-in electromagnetic plunger (not shown) in response to a signal from a key switch.

(8) #iL L mode key switch h (
am) is for stop, (8b) is for repeat, (8c) Fi
For progress.

(8d) is the play key switch, and (8e) is the correct answer rate display switch.

Next, an example of the magnetic tape (6) that can be applied to the present invention is shown below.
The diagram will be explained.

That is, the first and @4 tracks of the magnetic tape (6) are used as the 1st track (Ml) (M2), and the 2nd and M3 tracks are used as the learner's audio recording tracks (Nl) (N2).

Master trunk (M1) (M2)
TO) is recorded and the secondary
0HzlZ) control signal is a start signal that lasts for 2 seconds (
First, a chapter start signal (Ts) in which a control signal of, for example, 50 Hg lasts for one second is recorded via a relatively short-time no-signal portion av.

After this chapter start signal (Tt) VC, an audio signal (81) is recorded in the instruction # in a dialog format, that is, in a format in which the intermittent voice and the response voice are repeated alternately. (Next to number 81, for example, a conversation problem start signal (TI) of 50 Hg (D control signal lasting 0.5 seconds) is recorded.

This conversation signal (T,) is then recorded alternately with the question voice of the teaching conversation voice signal (81) and a non-signal portion for recording the response voice to it, resulting in a nine conversation question voice signal (N2). Then, for example, a chapter end signal (T1) in which a 50Hx control signal lasts for 0.25 seconds is recorded, and the chapter start signal (TI) to chapter end signal are repeatedly recorded for each chapter. .

Therefore, the magnetic tape identification signal (To) is the signal (T, ) ~
(Constructed by combining at least two of T-tons and 1
In the case shown, the start signal (T 侭) and the chapter end signal (
Ts) is continuously written 81 through the no-signal part (2).

In addition, as shown in FIG. 5 BK of the ordinary magnetic tape KF1 for language practice, the leading position tK of the master track (Ml) (M2), for example, the start signal (T-) and the conversation question start signal (T3).
are continuously recorded via the non-signal portion αq', and the recording time t of the identification signal is the same as that of the original tape.

Next, the control circuit of the present invention apparatus which performs magnetic tape position control using this magnetic tape for LL apparatus is shown in FIGS. 2 and 4.
Explain about g.

The magnetic tape (6) is attached to the magnetic brass fitting (2).
A tape transport amount detector (B) is installed to detect the tape transport amount. This detector is a Tezo counter connected to the right reel shaft (4R) via a rotation transmission means such as a belt! A rotating plate (2) having a magnetic material (2) attached to, for example, half of its outer peripheral surface is integrally disposed at the base of the drive shaft (2).

A Hall element is placed in close opposition to the magnetic body (2).

A magnetic detection element (2) such as a reed switch is provided.

The detection output of the magnetic detection device is supplied to a waveform shaping circuit that includes a differential circuit, etc., and detects the rotational speed of the drive shaft (c) as an aJl linear signal as the tape is transferred. That's what I do. In addition, the tape transport amount detector (2
) is not limited to the one that detects rotation magnetically as shown in the figure, but it is also possible to attach a 'circle* with a slit to the drive shaft @, and place a light emitting element and a light receiving element facing each other by sandwiching this □ disk. It may also be detected optically, and other
Body rotation detection means can be applied. Also, the detection position is not limited to the drive shaft (2).

It is also possible to directly detect from the right reel shaft (4R), or to detect the rotation speed of the pinch roller (9).

On the other hand, the master track (
The signal of Ml) (M2) is supplied to the audio circuit (branch) via the amplifier (2), and has a non-facial filter configuration that allows all of the 50Hx signal to pass through, for example, and rectifies its output. Each position signal (To) (Tl) is supplied to the frequency detection circuit @1 in this frequency detection circuit.
(TI) (Ts) is detected.

The outputs of the key switches (3) and (8) (to the output 2 frequency detection circuit) and the output of the waveform shaping circuit are respectively supplied to the arithmetic processing unit C11 having a memory circuit (2), and are then sent to the arithmetic unit 111. Processing output is magnetic recording/reproducing device (2)K
is supplied to drive this magnetic recording/reproducing device (2).

In this case, the processing unit ■ is random access memory,
It is composed of a combination of read-only memory, microprocessor, etc., and is built into the main body (1) of the device. - The arithmetic processing unit 1 drives the magnetic recording/reproducing device according to the flowchart shown in M4vjA to control the transfer of the magnetic tape (6).

That is, when a power switch (not shown) is turned on in step 1, the power is reset in step 2.

In step 3, the play key switch (3) of the normal 'operation key switch group or the command switch group for LL mode or r
! It is determined whether the symbol (@) is pressed and whether or not the magnetic tape (6) in the first steps 4 and 5 is the magnetic tape shown in FIG. In this case, the determination is made based on the detection of the magnetic tape identification signal (To).

Next, in step 6, the output of the frequency detection circuit (2) (3F
), and since the tape is stopped in the initial state, the output (8P) cannot be obtained, and the process proceeds to step 7, where it is determined whether the output (8G) of the tape transport amount detector is to be detected. In this case as well, the tape is in a stopped state, so the output (8G
) is obtained, the process moves to step 8, and it is determined that this is because the LL mode key switch group
3) (Determine whether or not D data pBs is "2". Since the content of data B3 is rO-1 in the A normal initial state,
Move on to the next step 10 and switch the key switch for correct answer rate display (
It is determined whether or not 8@) is pressed, and since this is not pressed, the process proceeds to step 11.

In this step 11, the suppression state of the play key switch (8C) is determined Wfr, and since it is pressed, it is determined in step 12 whether the content of the data BS is "0", and in step 13, the magnetic recording/reproducing device ( 2) to the sound mode, and then in step 14, move the magnetic tape (6) from the left reel shaft (4L) II to the right reel shaft (4L) in the sound mode.
R) Start transferring at a steady speed at 4# and return to step 5.

When the reset signal (T.) is detected from the frequency detection circuit 4 through the reproducing magnetic head (7), the process moves from step 6 to step 15, and in this step, the detection signal (8?) is detected from the T. feldspar. Then, in step 16, all stored data in the memory circuit (to) is cleared, and in step 17, the memory storage block 81K "4" of the memory circuit is stored, and the process returns to step 5. .

Next, when the non-recorded portion OQ arrives, the process moves from step 6 to step 7, since at this time a detection pulse signal (8G) is being emitted from the magnetic detection element.

Proceed to step 18 and store the 82 data storage section (in the storage circuit).
sn2) storage tape (this data was cleared to zero by the previous reset signal T@, so the data becomes "+1" and the process returns to step 5, and this operation will cause the next reset signal (T) to be obtained. This is repeated until the B2 data of the memory circuit is sequentially added and recorded.

, and then when the reset signal T. is detected, step 4.
15, 16, and return to step 5 through 17).

All stored data is cleared and "4" is stored in the 81st memory.

Next, step 5. until the chapter start signal T1 is obtained.
! , 1B to Step 5KJIea storage circuit - B2
Data storage section (m2) Adds "+1" every time a K power 9 nt signal (18G) is obtained.

When the chapter start signal T1 is obtained, step 5
,” 6. Proceed to step 19 through the 15th meeting, and proceed to step 2.
0 clears the stored data in the 82 data storage section (m2), and at step 21 the B5 data storage section (m!I) is cleared.
The stored data jI't is cleared and the process returns to step 5.

Thereafter, since the magnetic recording/reproducing device (2) is in the LL mode, the audio of the educational conversation audio record section (2) is reproduced.

During this time, the detection pulse signal (8G) is sequentially obtained from the magnetic detection element, so through step 6.7.18, "1" is sequentially added to the 82-digit memory storage section (m2) K of the memory circuit 4. The amount of tape travel is accumulated and stored.

Next, when the conversation problem start signal T snow is detected by the frequency detection circuit, the process proceeds to step 22 via steps S, 6, 15, and 19, in which the T1 signal is determined, and in step 25, the B2 day! The cumulative data stored in the payment section (m2) is transferred to the 84-digit mail storage section (m4).

Next, the problem audio of the teaching conversation audio is played.

The answer voice for this is uttered by learning f, and the track (M2
) or (M5), and O Seki B2 Deme storage part (f
fi2) memory data is changed every detection pulse signal (8G).
Adding 1" at a time makes me sick.

When the chapter end signal T3 is detected, step 5
, 6, 15, 19, 22, and proceeds to step 24. In this step, the T signal is determined, and the process proceeds to step 25, line 9, where it is determined that the stored data in the B3 data storage section (ms) is "0". Then, in step 26, the B5 data storage section (m
-1 is stored in step 3), and further, in step 27, the magnetic reproducing device (2) is switched to the rewind mode and the magnetic tape (6) is rewound.

Then, in this rewind mode, a detection nozzle signal (8G) obtained from the magnetic detection element is detected in step 2B, and as a result, in step 29, 82 de-1! Storage part (m
2) is subtracted by primary “1”, and this is B2.
0 is repeated until the memory data is equal to the memory tape in the B4 data storage (m4).Then in step 50 the B
When it is detected that the 2 data and the B4 data are equal, the process proceeds to step 31, where the stored data in the B4 data storage section (m4) is cleared and becomes 1'-000J.

Next, proceed to step 12, and the B5 storage tape is set to "1".
6, so go to step 32Kfi and install the magnetic recording playback device (
2) to play mode and return to step 5. For this purpose, the question audio of the teaching conversation audio placed on the magnetic tape (6) and the following learner's answer audio are sequentially played back, and during this time, steps 5, 6, and 7.18 are performed in the 82 data storage ( m2) memory tape detects the pulse signal (8G)
Every time you get a ``1'' re-Jaku is added.

Next, when the chapter end signal T is detected again, step 5
, 6, 15, 19.22, 2.4.25, the process proceeds to step 55, and since the B3 data is "1", step 34
Then, in step 55, the magnetic recording reproduction device (2) is stopped and the process returns to step 9.

In this state, since the magnetic tape (6) is stopped, O detection from the magnetic detection element (to), e-rus signal (8G), and detection signal (8F) from the frequency detection circuit (to) cannot be obtained. At this ninth step 9yc, the B3 data is “2”.
", so we go to step 36, and in this step we press the repeat key switch (8b) or the progress key switch (
It is determined whether or not the key switch (8c) is pressed, and if both are not pressed, proceed to step 57 and press the key switch (8b).
A selection display lamp (H8c) installed in or near the
40b) and (40c) are alternately driven to blink.

If you press the progress key switch (8c) from this state, step f will pass through steps 5, 6, 7, 8, and 9.56.
58tfc advances, "1" is added to the stored data in the B5 data storage section (m5) representing the number of operations of the repeat key switch (8b) and the advance key switch (8C), and then in step S9, the repeat key switch (8C) is activated. 8b) and jumps to step 41. In step 42, the B7 data storage section (m7) representing the number of correct answers is stored.
) Add "1" to the storage tape 0 then step 4
5, turn off the selection display lamp, and proceed to step 4.4. ,,
The correct answer rate is calculated by dividing the B7 data representing the number of correct answers t-m by the B5 data representing the number of times of creation, that is, the number of answers, and this is temporarily stored in the correct answer rate data storage section (m9). After that, it goes through step 45 and then in step 46, it's 88 de-ichi! Storage part (
Clear the memory tape of m8) and proceed to step 47.
Clear the stored data in the 85 data storage section (m5) and set it to "0" and proceed to step 12. % B5 data is "
0'', the process returns to step 5 via steps 13 and 14, and the magnetic recording/reproducing device (2) is driven in the LL mode.
Proceed to next chapter.

Also, if you suppress the repeat key switch (8b) instead of the advance key switch (8c), step 56.5
8% After 39, proceed to step 40, and in this step you will get 86 de-ichi! Storage unit Crn6)K stores memory data indicating that chapter (1) is a wrong answer, and then steps 4S:, 4'4', 45, and then step 48
After updating the B3 data to "3", the process moves to step 27, and thereafter steps 28.2f%50, ! 51, the process moves to step 12, the magnetic recording/reproducing device (2) is switched to the rewind self mode, and the B4 data is stored as "l'-ooo", so the chapter start position is returned to fK41.

In which state, after passing through step 32, the magnetic recording/reproducing device (2) is switched to the recording mode in step 1sQ 1a, and the teaching conversation audio is played again in the same manner as above, and the conversation problem audio is also played following this. The answer voice is recorded on track (M2) or (M3). When the chapter end signal Ts is detected, steps 5, 6, and 15 are performed.
, 19.22% Proceeds to step 25 via 24, and then proceeds to step 50 via step 3s and proceeds to step 51
In step 12, the stored data in the B3 data storage section (m3) is cleared and becomes "0". IA,,14
1i1. to step 5. The magnetic recording/reproducing device (returns to recording mode) and advances to the next chapter.The same operation is then repeated to study each chapter.In addition, the correct answer rate and the chapter position of the incorrect answer are recorded during study or at the end of the chapter. To confirm, press the correct answer rate display switch (8e)'.In this state, step 8 to step 9
．． 10, proceed to step 55, 1 then step 56
Stop the magnetic recording/reproducing device (2) and insert the magnetic tape (6).
) is stopped, and in step 57, the answer or repeat key switch (8b) is pressed based on the memory tape in the 86-digit memory storage section (m6), and the display lamp corresponding to Chapter 9 is turned on. When the light is turned on, the data stored in the correct answer rate data storage section (m9) is digitally displayed on the display device (transformer), and this state continues as long as the display switch (8e) is pressed. After that, when the suppression of the display switch (8c) is released, the process proceeds from step 55 to step 59, in which the magnetic recording and reproducing device (2) is switched to the play mode, and the process returns to step 5 to continue the next operation. .

As described above, according to the present invention, a cue signal (signal T1 or FiT* in overwriting) and an end position signal (signal Ts in overwriting) that can be distinguished from each other are recorded on a magnetic tape, and these Signal detection means for discriminating and detecting signals; tape transport amount detection means; transport amount storage circuit; means for rewinding the magnetic tape by detecting the end position signal; It has means for subtracting based on the output and means for stopping rewinding of the magnetic tape when the stored content of the tape transport amount storage circuit becomes equal to the initial value, and the tape transport amount after the first start signal is stored in the tape transport amount storage circuit. The magnetic tape is sequentially memorized, and when the final electric signal is detected, the magnetic tape is rewound. At the same time, the memorized contents of the memorized circuit are sequentially subtracted by the detection noculus of the tape transport amount detecting means, and the memorized contents become the desired value 1i1[K. Since the rewinding of the magnetic tape is stopped when it reaches the position where the cue signal is detected, when the magnetic tape is transported and reaches a predetermined position, the magnetic tape is automatically moved to the correct position. It is now possible to rewind to the initial position, especially for school 11i.
It is suitable for magnetic recording and sickle reproducing devices.

In addition, by recording a plurality of cue signals on the magnetic tape, the magnetic tape can be rewinded accurately at any cue signal level WILt, and the magnetic tape can be repeatedly run between arbitrary signals. It has excellent practical effects such as:

In the case of clay figurines, the arithmetic processing jJ position cI is used.
f111J111i1m*[Just then, '0. □8,5゜ An up-number Dakunkakunme is used as the circuit, and from the time when the cue signal is detected in the counter, the horizontal pulse of the tape transport amount detection means is manually added and counted, and after the end position signal is detected, the magnetic The magnetic tape may be stopped at a desired m-output signal position, that is, a desired force-adjusted content position, by rewinding the tape and performing a subtraction count using the pulses of the tape transport amount detecting means.

Further, the tape movement amount detection nosel may record a pulsed synchronization signal at predetermined intervals on the magnetic tape (6) K in advance and detect this with a magnetic head. It can be applied not only to KLL devices but also as a tape position control device for other magnetic recording and reproducing devices.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an example of the LL device m, Fig. 2 is a block diagram showing an embodiment of the present invention, and Hs5A is a rounded flowchart explaining its operation and operating procedure.
Ig' figure is! FIG. 3 is a diagram illustrating how magnetic tape signals are recorded. (2)... Magnetic recording/reproducing device, (6) Mountain magnetic tape, (8)... LL mode key switch group, (7)
...Magnetic head.翰...Tape running detected device, (to)...lI41
IL number detection circuit, palanquin... memory circuit, 6p... arithmetic processing unit.

Claims (1)

[Claims] In a magnetic recording and reproducing apparatus capable of transporting a magnetic tape in a play mode and a rewind mode, a mutually distinguishable cue signal is recorded on the magnetic tape, an end position signal is recorded at a position following the cue signal, and an end position signal is recorded on the magnetic tape. and signal detecting means for discriminating and detecting the end position signal; tape transport amount detecting means for detecting the transport amount of the magnetic tape as a number of pulses; a tape rewinding means for rewinding the magnetic tape by detecting the end position signal; and a tape rewinding means for rewinding the magnetic tape by detecting the end position signal; and a tape rewinding means for rewinding the magnetic tape by sequentially storing the contents stored in the tape transporting amount storage circuit on the tape during operation of the rewinding means. It is desirable to have means for subtracting based on the output of the transfer amount detection means, and means for stopping rewinding of the magnetic tape when the stored content of the tape transfer amount storage circuit becomes equal to the initial value. Tape position control device for magnetic recording and reproducing devices.