JPS5924450A - Tape recorder - Google Patents

Abstract

PURPOSE:To perform high-speed dubbing without fail even when an operation ineffective key is operated by mistake, by driving an operation ineffective switch associatively with a high-speed command key of a control system. CONSTITUTION:When high-speed dubbing is carried out, a high-speed command is sent to a control circuit 40 with the high-speed command key 36b, and the control circuit 40 after turning on all operation ineffective switches 44A, 44B, 46A, and 46B by the high-speed command regardless of the state of operation keys 36k and 36l to make the operations of operating circuits 32A and 34B ineffective operates driving devices 20A and 20B, a sound recording amplifier 22A, and a reproduct amplifier 24B to perform the dubbing while driving cassette tapes 10A and 10B at a high speed. Consequently, reproduce signal 100B of the reproduce amplifier 24B which is increased to a high frequency passes through the operating circuits 34B and 32A as it is and is supplied to the sound recording amplifier 22A to be recorded on the cassette tape 10A without any alteration.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder, and more particularly to a tape recorder in which two tapes can be set and dubbing can be performed between the two tapes.

Conventionally, this type of tape recorder 17 has been rarely used as shown in FIG.

This tape recorder uses the set cassette tape IO.
A, a drive system 12 that drives the IOB, and a head 14A,
Amplifier system 1G connected to 14B, and drive system 12
, a control system 18 for controlling the entire engine system 16 is provided.

The tapes IOA and IOB are the drive device 20 of the drive system 12.
A and 20B are respectively driven by Jl set.

Then, the head 14A records and plays back the 10 cassette tapes. x 4 n Bakaset IOB
can be played.

Furthermore, the amplifier system 16 includes a recording amplifier 22 for exciting the head 14 and the person. A reproduction amplifier 24A1 that amplifies the signal picked up by the head 14A and a head 14B.
Regeneration amplifier 24B that amplifies the good signal picked up by
is provided.

In this way, this conventional device has the head 14A1 drive device 20.
It is equipped with a recording/playback system including an A1 recording amplifier 22 and 24 playback amplifiers for recording and playing back the cassette tape IOA, and a playback system including a head 14B1 driving device 20B and a playback amplifier 24Bf for playing back the cassette tape IOB.

゛In addition, the reproduction signal 100A of the reproduction amplifier 24A is connected to terminal 2.
6A to the outside, and the playback signal 100B of the playback amplifier 24B is output to the outside from the terminal 26B. Furthermore, the recording amplifier 22 has a terminal 26C1 for adjusting the recording level.
? +) A recording signal 102 is input from the outside via the niumium 2B.

Here, this tape recorder is capable of dubbing the contents of the cassette tape 10B to 10 cassette tapes69, and with this method, the playback signal of the playback amplifier 14B is 100B.
A changeover switch 30 for switching and outputting the recording signal 102 and the recording signal 102 is provided on the front side of the recording amplifier 22.

Furthermore, this tape recorder employs a so-called Dolby one-way system9, and therefore, a compression operation circuit 32 to which the switching output of the switching switch 30 is supplied is provided before the recording amplifier 22, and a playback amplifier 24A. Extension operation circuits 34A and 34B are provided on the output side of 24B, respectively.

This compression operation circuit 32 is capable of amplifying a small level signal according to predetermined frequency characteristics, and at this time, it is possible to increase the amplitude in the high frequency range.
It is possible to perform signal manipulations opposite to those of the ti compression manipulation circuit 32. When the signal is compressed and expanded using the Dolby method in this manner, it is possible to perform reproduction in which only tape noise is reduced. This principle takes advantage of the masking effect in which the human ear does not perceive small noises in response to loud sounds, but is sensitive to small noises.

The compression operation circuit 32, the expansion operation circuit 34, and 3
4B is composed of parts 0 and their predetermined terminals V
When the C power supply voltage is applied, such signal manipulation operation is invalidated and the input signal is output until that time.

The above drive system 12. The amplifier system 16 is the control system 18 described above.
It is controlled as follows.

This control system 18 includes a plurality of operation keys 36a.

A command circuit 38 including 36b, 36c, 36d-...36nt, which outputs all the various commands when operated singly or in combination;
Drive devices 20A, 20 according to various commands 9 of command circuit 38
B, recording amplifier 22, playback 7 amp 24A, 24BI'C
Control signal 200A, 20013, 200.204A, 2
A control circuit 40 that outputs 04B and further drives the changeover switch 30 with a control signal 2()6, and a power supply 4.
2 and the operating circuit 32, 34, and 34B are respectively inserted and turned on, and the 19 power supply voltage is applied to the operating circuit 32,
It has operation invalidation switches 44, 46A, 46B that supply signals to 34A, 34B to invalidate their operations. Note that the control circuit is composed of 40 microcomputers and the like.

Among the operation keys 36, in this example, the operation keys 36
At1. This is for dubbing commands.

The operation key 36B"' is for high-speed command, and the operation key 36B"' is for high speed command.
0A, 20B, recording amplifier 22, and playback amplifier 24B start operating, and the changeover switch 30 switches to playback amplifier 24.
When switched to the output side of B and the high speed command key 361) is operated, the drive unit [20A, 20B frame]
-j-7' 10A, IOB is driven at high speed (for example, twice the low speed).

Since the tape recorder shown in FIG. 1 is configured as described above, this tape recorder performs all recording and playback of cassette tape IOA, plays back cassette tape IOB, and also transfers the contents of cassette tape 1013 to cassette tape 1.゜Dub to A, and also record, play,
By operating the switches 44 and 4a during dubbing, low-noise reproduction can be performed, and by operating the high speed command key 36B during dubbing, the cassette tapes IOA and IOB are driven by the drive devices 2oA and 2onrc. It is driven at high speed and can complete dubbing in a short time.

Here, dubbing command key 36A1 high speed command key 36B
is operated and the contents of the cassette tape IOH are being dubbed at high speed to the cassette tape IOH, one or both of the operation invalid switches 44 and 46B are turned off and one of the operation circuits 32 and 34B is activated. When both outputs are operating, the reference frequency characteristics of the signal operation of the operation circuits 32 and 34B are constant, but the cassette tape IOB is driven at high speed, so the signal output from the playback amplifier 24B is In this case, dubbing is performed according to a predetermined frequency characteristic in this type of tape recorder. Therefore, it becomes impossible to perform good dubbing using the F ruby one-sided method.
For this reason, such operations must be prohibited.

However, in the conventional data recorder, the operation disable switches 44 and 46B are manually operated, so it is often the case that the PA is turned off during high-speed dubbing. This caused failures in high-speed dubbing.

The present invention has been made in view of the above-mentioned conventional problems.
The object of the present invention is to provide a tape recorder that can perform high-speed dubbing without failure even if the operation disable switch is operated in a state of failure.

In order to achieve all of the above objects, the present invention provides a recording system that performs recording on a patterned tape while driving a set first tape, and a recording system that performs recording on a patterned tape while driving a set second tape. A playback system, a control system for controlling all of the recording system and playback system, and the recording system includes a compression operation circuit that amplifies all small level signals according to predetermined frequency characteristics. The control system includes a compression operation 1'F circuit and an expansion operation f'F circuit that performs the opposite operation operation, and the control system outputs a command to drive each tape at high speed to the recording system and playback system. a command key, a first operation disable swing T that completely disables the operation of the compression operation circuit, and a second operation disable swing T that disables the operation of the expansion operation circuit;
Both tapes are driven at high speed by operating the high speed command key, and the playback signal of the playback system is supplied to the recording system, so that the recorded content of the first tape is transferred to the second tape. The present invention is characterized in that, when high-speed recording is performed, the operation of the compression operation circuit and the expansion operation circuit is invalidated by driving a both-operation invalidation switch.

Hereinafter, a preferred embodiment of the data recorder coder related to the unexploded engine will be fully explained based on the drawings.

FIG. 2 shows a preferred embodiment of the tape recorder according to the present invention, which includes the same members [11 with the same reference numerals as the conventional device 1-1 described above].

I will omit the explanation.

In addition to the amplifier system 16 of this embodiment, a recording amplifier 22A is provided for the head 14AK.
A recording amplifier 22B is also provided for B, and a compression operation circuit 32A is installed before the recording amplifier 22A.
Rano 1. On the other hand, a main compression operation circuit 32B is provided at the front stage of the recording amplifier 22B.

Incidentally, recording level adjustment volume controls 28A and 28B are provided at the rear of the input terminals 26c and 26d, respectively, between the output side of the cut-out switch 30° extension operation circuit 34B. In order to adjust the so-called Dolby level at the time of J dubbing and to match them in the L, C, and R sound-1 reproduction systems, a recording level adjustment ZERUUM 28c is provided.

Since the amplifier system 16 is configured as described above, the tape recorder of the one-shot example has 20 drive units and 22 recording amplifiers.
A first recording and reproducing system including a reproducing amplifier 24A't- and a second recording and reproducing system including a drive device 20B1, a recording amplifier 22B, and a reproducing amplifier 24B are formed, and the first recording and reproducing system is used for recording the cassette tape 10A. The second recording/playback system can record and playback the cassette tape IOB, respectively.

Next, the control system 18 that controls the drive system 12 and amplifier system 16 will be described.

8 mentioned above! ! In addition, since the amplifier system 16 of this embodiment is provided with the compression operation circuit 32B, the control system 18 is newly equipped with an operation disable switch 44B that operates the compression operation circuit 32B and disables its operation. There is a
, the operation invalidation switch 44B is the switch 44A, 46A,
Similarly to 46B, when it is turned on, it is possible to supply the power supply EE to the compression operation circuit 42B to disable its operation.

In this embodiment, the operation invalidation switches 44A, 4
4B, 46A, 4611 control signals 208A, 2 (18B) output from the control circuit 40.

210A, 210BK, l) Each drive is controlled.

This control circuit 40 is connected to the Dolby key 36 of the command circuit 218.
1 (is operated and outputs a control signal 20
8A and 210A, and control signals 210B and 208B'e can be output according to the commands output when Dolby key 36Q is operated. When the disable switches 44A and 46A are turned on in the circuit and the Dolby key 36k is operated A), the operation disable switches 44 and 4611 are simultaneously turned off, and when the Dolby key 86Q is turned on, the operation disable switch 44 is operated.
1.46B are operated simultaneously and the Dolby key 36Q is turned off, the operation invalidation switches 44B and 4613 are turned off at the same time.

Here, the control path 40 is controlled by the dubbing command key 36a,
When the high-speed command key 36b is operated to perform high-speed dagging, the Dolby key 36 is operated with 36. Control signals 208 are sent to the operation invalidation switches 44A, 44B, 46A, and 46B, regardless of the operation status of Q.
A, 208B, 210A, 210B can be output, and the operations of the operation circuits 32A, 32B, 34A, 34B can be invalidated by turning on these operation invalidation switches 44A, 44B, 46A, 46B.

A preferred embodiment of the present invention has the above configuration, and its operation will be explained below.

When one of the operation keys 3G of the command circuit 38 that commands the reclamation money is operated and a regeneration command is given to the control circuit 40,
The control signals 200A and 204 are given to the drive device 20A1 and the playback amplifier 24AtC to reproduce the cassette tape IOA, and the playback signal 100 is output from the terminal 26A to the outside, and the straddle control 'l+signals 20013, 204.
B is the drive device 10B1 regeneration amplifier 24 Tl rC-'
The cassette tape IOB is played back, and a playback signal 100B is output from the terminal 26T3 to the outside.

It should be noted that the selection of which of the cassette tapes IQA and 10B should be played back, or whether both should be played back, is made by operating the operation key 36 of the operation circuit 38. Also, during playback, the expansion operation circuits 34A, 34
111 Dolby key 36) c, 36
．． Eri is selected for Q's operation.

Further, when recording is to be performed, the one for recording among the operation keys 36 of the command circuit 36 is operated.

Then, a recording command is sent to the control circuit 40 (it). In response, the control circuit 40 applies the control signal 20()λ, 202 to the drive circuit 20A1 and the recording amplifier 22A to force recording onto the cassette tape IOA.
B, 22O21)t! A moving device 20B1 recording amplifier 22
B to perform recording on the cassette deso IOB.

The selection of whether to record to 110 people on cassette day, the entire recording to cassette tape 101), or whether to record to both cassette tapes IOA and 1011 is made by the operating pressure of the operating key 36 of the operating port M38. The control circuit 40 outputs control signals 20 according to these operations.
0A, 200B, 202A, 202Btal cuff.

Also, the selection of whether or not to perform Dolby recording is made using Dolby key 36, 369. The operation is performed immediately.

As mentioned above, this tape recorder has 110 people on cassette day,
It is possible to record and play back both 1011 and 1011.

Next, we will explain how to perform dubbing. First, when performing constant speed dubbing, press the Dolby key 3 in advance.
6, 36R is operated and switches 44A, 44B, 4
6A and 46B are driven, and it is selected whether or not to operate the operation circuits 32A and 34B. Next, the dubbing command key 36a is operated to give a dubbing command to the control circuit 40, and the control circuit 40 controls (N9200 people, 2
0013, 202A, 20411 are drive devices 20A,
20 B, record fr7yzo 22A, v5 raw amplifier 2
4B, and the control signal 206 is also applied to the selector switch 3.
Set the power to 0 and switch switch Y-30 to H for adjusting the recording level. Switched to Liium 28c@! Sign.

In addition, the reproduction of the Erica cassette recorder 10B is carried out, and the reproduction signal 100B of the reproduction amplifier 24B is supplied to the recording amplifier 22A via the recording ratio adjustment dial 28c and the changeover switch 30, and the cassette tape 10AIC output hit Y--P is supplied to the recording amplifier 22A. The contents of 1oB are dubbed. In addition, when dubbing is performed using the Dolby one-way system, the adjustment of the recording and reproducing system 28c is performed in advance, and the adjustment between the re-recording system and the playback system is performed.
(alignment) is performed.

Further, when high-speed dubbing is performed, the high-speed command key 36b is also operated (VCt) [a high-speed command is given to the control circuit 4°]. At this time, the control circuit 40 gives a high-speed command (operation is disabled regardless of the state of the operation keys 36 and 361).

Turn on all 44B, 46A, and 46B and operate circuit 32A.
, 34B and then drive devices 20A, 20.
B. The recording amplifier 22A and the reproduction amplifier 24B'i are operated, and dubbing is performed while driving the cassette tape 10A and IOB at high speed. Therefore, in this embodiment, Dolby keys 36k, 36. Q4) Operation 1 regardless of operation status
The operations of the circuits 32A and 3411 are disabled, and the cassette tape IOB is driven at high speed, and the frequency changes to a higher frequency so that the reproduction signal 100B of the reproduction amplifier 24B passes through the operation circuits 34B and 32A as is. The signal is supplied to the recording amplifier 22Al'C and recorded onto the cassette tape IOA without being operated.

In this manner, in this embodiment, the operation invalidation switches 44A and 46B are driven in conjunction with the high speed command key 36B, and the operation circuit 32A is activated during high speed dubbing. Since the operation of 34B is disabled, when high-speed dubbing is performed, it is possible to accidentally press [Dolby key 36, 36. High-speed dubbing can be performed without disturbing the frequency characteristics even if u is manipulated.

As explained above, even if the present invention is engineered and the tape recorder is mistakenly commanded to perform compression or expansion operations during high-speed dubbing, the tape recorder ignores the command and performs high-speed dubbing. Therefore, it is possible to perform high-speed dubbing without any failures.

[Brief explanation of drawings]

Figure 1 is a block diagram of a conventional tape recorder, Figure 2 is a block diagram of a conventional tape recorder.
The figure is a block diagram showing a preferred embodiment of a tape recorder according to the present invention. 10A, IOB...Cassette tape, 12...Drive system, 14 people, 14B...Head, 16...Amplifier system, 18...Control system, 22...Recording amplifier, 24A, 24B. ...Reproduction amplifier...30...Selector switch, 32A, 32B...Compression operation circuit, 34A, 34B...Expansion operation circuit, 36a...Dubbing command key, 36b...High speed command key, 36 , 36 father...Dolby key, 38...command circuit, 40...control circuit, 44A, 44B...operation invalidation switch, 46A, 46
B... Operation invalidation switch. Patent applicant: Trio Corporation (−

Claims (1)

[Claims] a recording system that performs recording on a set first tape while driving the set; a playback system that plays back the set second tape while driving the second tape; and the recording system and playback system. The recording system includes a compression operation circuit that amplifies a small level signal according to a predetermined frequency characteristic, and the playback system includes an expansion operation circuit that performs an operation opposite to that of the compression operation circuit. The control system includes a high speed command key that outputs a command to drive the tape at high speed to each of the recording system and the playback system, and a first operation disable switch that disables the operation of the compression operation circuit. a second operation disabling switch for disabling the operation of the expansion operation circuit, the re-tape is driven at high speed by operation of a high speed command key, and the reproduction signal of the reproduction system is supplied to the recording system. and when the recorded contents of the first tape are recorded at high speed on the second tape, a double operation disable switch is driven to disable the operations of the EE compression operation circuit and the expansion operation circuit. Cheap Renida 1-da.