CN86101159A

CN86101159A - T-card repeater

Info

Publication number: CN86101159A
Application number: CN86101159.7A
Authority: CN
Inventors: 杉田武弘; 小松原道正
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 1985-01-30
Filing date: 1986-01-30
Publication date: 1986-09-17
Also published as: KR860006075A; KR930003762B1; CN1003406B; JPS61128667U; JPH0526595Y2

Abstract

This is the content about T-card repeater.It arrives semiconductor memory to the content stores that is recorded on the study card, can regenerate repeatedly by reading this content repeatedly, simultaneously, also can suspend repeated regeneration.

Description

T-card repeater

This programme is the scheme of the T-card repeater used about aspects such as language learning exercise such as English Conversations.

This programme can deposit the content of study card in storer, carries out repeated regeneration by it is repeated to read out, and can suspend repeated regeneration simultaneously.Like this, need not carry out complicated operations, just can carry out repeated regeneration, simultaneously, can suspend at any time, thereby can improve results of learning.

Fig. 5 represents the outward appearance of T-card repeater in the past.And in Fig. 5, pause button 7 is installed according to this programme.

In Fig. 5, a side of casing is provided with magnetic card insertion groove 1 and the magnetic card that is attached thereto is advanced groove 2 is provided with loudspeaker player 3, volume knob 4 etc. simultaneously.On the study card, post tape 6 with the contents such as length records English Conversation of several seconds.

When utilizing this T-card repeater to learn, magnetic card 5 inserted insertion grooves 1 after, in the direction of arrow was pressed into it groove 2 of advancing, then magnetic card 5 became reproduced state after detected.Thus, magnetic card 5 is advanced in the groove 2 of advancing, and tape 6 is reproduced, and can hear this regeneration sound from playback parts 3.

Utilizing above-mentioned T-card repeater to carry out language learning when exercise, make results of learning the best way be, magnetic card is repeated regeneration for more than 5 time, the pronunciation of this sound etc. is charged in the brain., utilization player before will be extracted with the handgrip magnetic card magnetic card 5 repeated regenerations behind magnetic card 5 regeneration endings from the groove 2 of advancing, be inserted into the operation of insertion groove 1 again, must carry out several times every the several seconds.Therefore, carry out repeated regeneration and need take very big strength, and owing to note operation, spirit can not focus on the sound.The wearing and tearing of magnetic card are severe again, so the magnetic card subject to damage.

In this programme, installed the mechanism that the regenerated signal of magnetic card is carried out the A/D conversion for this reason; Storage has been carried out the solid-state memory of the digital signal of A/D conversion; The mechanism that constitutes by address counter of reading this storer repeatedly etc.; Read output signal is carried out the mechanism of D/A conversion and the mechanism that time-out is read.

The recorded content of magnetic card is repeated regeneration automatically, can carry out the time-out of repeated regeneration simultaneously.

Action during according to Fig. 1 and Fig. 2 explanation carrying out repeated regeneration and time-out.And on a～j of output map 2 on a～j point of Fig. 1 represented signal.

At first, when magnetic card 5 inserted above-mentioned magnetic card insertion groove 1, magnetic card detected with microswitch 8 and becomes the ON(connection).Therefore, provide supply voltage+B to given circuit, simultaneously, produce initiating signal at a point, and then magnetic card 5 is advanced from control circuit 9.Its result, machine is in magnetic card regeneration and storer writes state.And above-mentioned supply voltage+B obtains from battery 31.

Fig. 3 represents above-mentioned switch 8 and magnetic card driving mechanism.These all are installed in the insertion groove 1 of Fig. 5 and the boundary vicinity of the groove 2 of advancing.

In Fig. 3, when magnetic card 5 inserted between reproduce head 10 and the driving wheel 11, the actuator 13 that encourages to arrow 12 directions overcame above-mentioned induction force, reverses to arrow 14 directions.So above-mentioned switch 8 becomes ON.

When above-mentioned switch 8 becomes ON, obtain above-mentioned initiating signal, simultaneously, apply driving voltage to motor drive circuit from above-mentioned control circuit 9.By being that capstan motor 16 is driven, magnetic card 5 is advanced by arrow 17 directions of Fig. 3, and tape 6 is through magnetic head 10 regeneration.This regenerated signal is added to self-adaptation δ-modulation-demodulation circuit 19 after amplifying in the amplifier 18 of Fig. 1.

On the other hand, above-mentioned initiating signal triggers the one shot multivibrator that can trigger again 32 of Fig. 1, obtains its Q output at the b point, through this signal, can trigger one shot multivibrator 33 again, obtains its Q output at the C point.Because above-mentioned initiating signal is based on microswitch 8 and becomes and obtain behind the ON, therefore contains the noise that shake shown in Figure 2 causes.In order to eliminate this The noise, adopted above-mentioned one shot multivibrator 32,33.

In the forward position of b point gained signal is (L(low pressure position)) during, trigger 21 is through being cleared with door 35, and simultaneously, during C point gained signal was (L), counter 24 was through being cleared with door 34.When above-mentioned C point gained signal rose, trigger 21 was through being triggered with door 34 again.Like this, the Q of trigger 21,22 output rises to (H), again by making address counter 24 zero clearings with door 23.In addition, the D of trigger 21 end adds (H) of its Q output, and the D end of trigger 22 adds (H).And with door 23 on add (H) from phase inverter 25.With door 34 on added the Q output (H) of the one shot multivibrator 36 that can trigger again again.

When the Q of trigger 21,22 output, when promptly d point and the e signal of ordering became (H), the signal owing to d is ordered became ON with door 26, and the clock signal C K1 from the assigned frequency of markers generation circuit 27 gained is added to counter 24 by the f point.Because the e signal of ordering, solid-state memory 28 becomes write state again, and simultaneously, above-mentioned modulation-demodulation circuit 19 becomes E state (encoding state).And the needed clock signal C K2 of signal Processing is added to this modulation-demodulation circuit 19 from above-mentioned markers generation circuit 27.

Modulation-demodulation circuit 19 is with above-mentioned clock signal C K2, carrying out ADM(self-adaptation δ-modulation after the regenerated signal sampling), its digital output signal adds to storage 28; And according to by counter 24 at the resulting address signal write store of g point.At this moment, above-mentioned regenerated signal is added to loudspeaker 30 after amplifier 29 amplifies.Though clock signal C K1 is identical with the CK2 frequency, because the markers of write store 28 and the sampling markers of ADM conversion stagger, therefore, for example, become anti-phase relation.

When the regeneration ending of magnetic card 5, and behind counter 24 whole countings, its count value becomes (H) entirely, then obtains carry pulse on the h point.Remove counter 24 after this carry pulse reverses in phase inverter 25, remove trigger 22 simultaneously.Like this, the signal that e is ordered becomes (L), and because this signal (L), storer 28 becomes the state of reading, and simultaneously, modulation-demodulation circuit 19 becomes D state (decoding state).Because above situation, machine becomes the repeated regeneration state.

Counter 24 continues the counting to clock signal C K1, and at g point OPADD signal, like this, the ADM signal in the write store 28 is read out.The ADM signal that this is read out is transformed to simulating signal through modulation-demodulation circuit 19, is added to loudspeaker 30 by amplifier 29.And counter 24 is removed by carry pulse when count value becomes entirely (H) again, and storer 28 is read out again.Like this, counter 24 is removed by carry pulse, and storer 28 is read out repeatedly simultaneously, is read out and is added to loudspeaker 30 after signal is demodulated to simulating signal, carries out repeated regeneration by this way.

When suspending repeated regeneration, pause switch 7 is become ON.Thus, the signal that j is ordered rises, and one shot multivibrator 36 is triggered, and produces the signal of trigger 21 at the i point.Therefore, the signal that d is ordered becomes (L), becomes OFF with door 26, and counter 24 stops counting, and repeated regeneration is suspended.And above-mentioned pause switch 7 is corresponding with the pause button 7 of Fig. 5, is the switch that becomes ON when pressing.

Under this halted state, once more switch 7 is become ON, then one shot multivibrator 36 is triggered, and therefore, counter 24 is eliminated, and simultaneously, trigger 21 is triggered, because its Q output becomes ON with door 26.Thus, clock signal C K1 is added to counter 24 again, and storage 28 is read out once more.In this case, storer 28 is read out from start address, and therefore, from the beginning voice signal is regenerated.

According to the foregoing description, can automatically carry out the repeated regeneration of magnetic card 5 repeatedly, can suspend at any time simultaneously.And, when in time-out, newly inserting magnetic card 5, carry out a, b, the c of Fig. 2 ... action, carry out the repeated regeneration of its magnetic card 5.

In present embodiment, utilize the ADM mode as A/D conversion regime from magnetic head 10 gained regenerated signals, still, the ADM signal is expressed as one bit digital signal; Therefore, having the capacity of storer 28 can be little and the advantage that can cheap provide.And, can replace the ADM mode with DM mode and other digital modulation modes.

Fig. 4 represents the examples of implementation of self-adaptation 6 modulation-demodulation circuits 19.

When above-mentioned encoding state, the signal that switch 42 is ordered with the e of Fig. 1 is closed into the E side.From the amplifier 18 added regeneration analog input signal Ai of Fig. 1, the output signal with integrator 44 in comparer 43 compares, and its comparative result is added to the elementary trigger 45 of the trigger 45,46,47 of 3 grades of connections through switch 42.These triggers 45,46,47 are triggered by clock signal C K2, are keeping passing by sampled result 3 times, and the Q of elementary trigger 45 is exported as digital output signal D.This digital output signal D., as the signal of expression input signal Ai increase and decrease, also be added in control circuit 38 simultaneously.Each the Q output and the Q output of trigger 45,46,47 are added to NOT-AND gate 39,40 respectively, and the output of these NOT-AND gates 39,40 is added to NOT-AND gate 41.

Therefore, when the sampled value of analog input signal Ai increased continuously for 3 times or reduces, promptly when the output of trigger 45,46,47 was (H) or (L), the signal of expression sampling step amplitude increase and decrease was added to control circuit 38.

Control circuit 38 is according to the signal of the above-mentioned step amplitude increase and decrease of expression and the signal of the above-mentioned input signal Ai increase and decrease of expression, and the step amount of decision sampling is added to integrator 44 to this as simulating signal.Like this, the output of integrator 44 changes just as following the tracks of input signal Ai.

When above-mentioned decoding state, switch 42 is to D side closure.The digital input signals Di that reads from the storer 28 of Fig. 1 remains on the trigger 45,46,47 successively through switch 42.Then, the identical action of situation when carrying out with above-mentioned coding promptly can be used as the output of integrator 44, obtains analog output signal Ao.

Owing to automatically become the repeated regeneration state after the magnetic card regeneration, from the repeatable operation of in the past the sort of manual regeneration, free, can improve results of learning concentrating on the regeneration sound.And owing to can suspend, very convenient in study.Adopt solid-state memory to repeat to read, therefore, the regeneration of study card can only be carried out once, does not have the situation of wearing and tearing study card equivalent damage.

Fig. 1 is the block scheme of expression this programme examples of implementation, Fig. 2 is the time-scale of Fig. 1, Fig. 3 is the skeleton view of magnetic card detection with microswitch and magnetic card driving mechanism, and Fig. 4 is the block scheme of the self-adaptation δ-modulation-demodulation circuit examples of implementation of presentation graphs 1, and Fig. 5 is the outward appearance skeleton view of T-card repeater.

And used in the drawings symbol is:

5 ... the study card

7 ... pause switch

10 ... reproduce head

19 ... self-adaptation δ-modulation-demodulation circuit

24 ... address counter

28 ... solid-state memory

Claims

One T-card repeater, it is characterized by this T-card repeater has: detect the testing agency whether the study card inserts, magnetic card regenerative loop according to this testing agency's detection case work, the analoging sound signal that derives from this magnetic card regenerative loop is carried out the mechanism of A/D (mould/number) conversion, write the above-mentioned solid-state memory that carries out the A/D figure signal, to carry out the mechanism of D/A (D/A) conversion from the signal that this solid-state memory is read, on above-mentioned solid-state memory, the counter that writes in required time and read and above-mentioned reading suspended and after above-mentioned time-out releasing, the mechanism that above-mentioned signal is started anew to read.