JPH0643858Y2 - Dubbing device for cassette tape recorders - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a dubbing device of a cassette tape recorder capable of driving two cassette tapes having a common capstan at the same time and performing a reverse operation.

(Prior Art) When continuously dubbing one surface (hereinafter referred to as A surface) and the other surface (hereinafter referred to as B surface) of a cassette tape, a conventional cassette tape recorder has two automatic reverse functions. The drive mechanism separately controls the cassette tape on the reproducing side and the cassette tape on the recording side.

However, in such a conventional cassette tape recorder, for example, when only the side A of the reproducing side cassette tape (hereinafter referred to as the reproducing side tape) is the tape end, the recording side cassette tape (hereinafter referred to as the recording side tape) is The recording operation state is continued, and the reproducing side tape starts to reproduce the B side after the A side. The states of the reproducing side tape and the recording side tape at this time are shown in FIG. Also, if the tape on the playback side does not reach the tape end even if the tape on the recording side reaches the tape end, the A-side of the tape on the playback side continues to be in the playback operation state, and the tape on the recording side reverses to B during this time.
The recording of the A side of the reproducing side tape will be continued.
The states of the reproducing side tape and the recording side tape at this time are shown in FIG.

On the other hand, when driving both the playback side tape and the recording side tape simultaneously with one capstan, the playback side tape and the recording side tape can be driven simultaneously in the same direction,
If only one tape becomes a tape end and reverse operation is performed, both tapes will be reverse operation at the same time,
Due to the difference between the reproduction time of the reproduction side tape and the recording time of the recording side tape, the recording state of the recording side tape is as shown in FIGS. 7 and 8.

(Problems to be solved by the invention) However, in the above method of dubbing by driving the reproducing side tape and the recording side tape by separate driving mechanisms,
In the case shown in FIG. 5, a blank (a blank portion in the figure, the same applies hereinafter) can be formed in the middle of the A side of the recording side tape, and a large blank can also be formed in the latter half of the B side.
In the case shown in FIG. 6, there was a problem that a blank was formed in the middle of the B side of the recording side tape and the latter half of the B side of the reproducing side tape was significantly cut.

Further, in the above method in which both the reproducing side tape and the recording side tape are driven simultaneously by one capstan, in the case shown in FIG. 7, in the case of FIG. In addition, a blank can be made in and the recording is started only in the middle of the B side. Moreover, in the case shown in FIG. 8, the A side and the rear end portion of the reproducing side tape and the head portion of the B side tape are recorded. There was a problem that it would be cut.

(Means for Solving the Problems) In order to solve the above problems, a dubbing device for a cassette tape recorder according to the present invention comprises a first tape recorder section having at least a reproducing function and a second tape having at least a recording function. A cassette that is equipped with a recorder section and is capable of playing back the first tape recorder section while simultaneously recording the second tape recorder section and dubbing from the cassette tape on the playback side to the cassette tape on the recording side. In the tape recorder, a traveling direction determining means for determining whether the traveling direction of the cassette tape is a forward direction or a reverse direction, a mode determining means for determining a single side reproduction mode or a double side reproduction mode, and the dubbing mode Cassette tape loaded in the first tape recorder section or the second tape recorder When it is detected that one of the cassette tapes loaded in the coder unit reaches the tape end, the determination result obtained by the traveling direction determination means and the mode determination means indicates the forward direction and the double-sided reproduction mode. At this time, when at least one of the tape recorders that has not reached the tape end is fast-forwarded to wind both cassette tapes to the tape end, and the determination result indicates at least one of the reverse direction and the single-sided reproduction mode, Forward direction dubbing control means for stopping the first tape recorder portion and the second tape recorder portion, and the first tape recorder when both cassette tapes are wound up to the tape end by the forward direction dubbing control means. Section and the second tape recorder section at the same time Is obtained by a reverse direction dubbing control means for starting a reverse dubbing operation is switched to.

(Operation) In the dubbing mode, the forward direction dubbing control means confirms that either the cassette tape loaded in the first tape recorder or the cassette tape loaded in the second tape recorder reaches the tape end. When detected, the following control is performed based on the determination result obtained by the traveling direction determination means and the mode determination means.

That is, when the determination result is the forward direction and the double-sided reproduction mode is indicated, at least the tape recorder portion which has not reached the tape end is fast-forwarded to wind both cassette tapes to the tape end. When the determination result indicates at least either the reverse direction or the single-sided reproduction mode, the first tape recorder section and the second tape recorder section are stopped.

In the reverse direction dubbing control means, when both cassette tapes are wound up to the tape end by the forward direction dubbing control means, the first tape recorder section and the second tape recorder section
At the same time, the tape recorder section is switched to the reverse side to start the reverse dubbing operation. That is, the reverse direction dubbing control means, even in the dubbing mode,
The reverse dubbing operation is not performed unless both cassette tapes are wound up to the tape end.

That is, when the determination result indicates the reverse direction, that is, when the dubbing on both sides is completed, the forward direction dubbing control means, even if there is a tape recorder section that has not reached the tape end, both tape recorder sections at that time. To stop. Therefore, the problem that the dubbing in the forward direction is started again after the dubbing in the reverse direction is completed is resolved.

Further, the forward direction dubbing control means, when the determination result indicates the single-sided playback mode, if the cassette tape of one tape recorder unit has reached the tape end, the cassette tape of the other tape recorder unit will reach the tape end. Even if it has not reached, both tape recorder units are stopped at that time. Therefore, the problem that the reverse dubbing is executed despite the single-sided reproduction mode is solved. That is, according to the dubbing device of the present invention, it is possible to reduce dubbing mistakes.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic structure of a cassette tape recorder to which the dubbing device of the present invention is applied.

In FIG. 1, reference numeral 1 denotes a cassette tape, a reproducing-side cassette tape (reproducing-side tape) is T ₁ , and a recording-side cassette tape (recording-side tape) is T ₂ . These cassette tapes T ₁ and T ₂ are coaxially arranged front and back on a capstan (not shown). Reference numeral 2 is a rotation detector for the reproduction side tape T ₁ , and 3 is a rotation detector for the recording side tape T ₂ , which are arranged on one side of a reel stand (not shown).
Both of these rotation detectors 2 and 3 generate pulse outputs when the tape is running and input them to the CPU 8. Further, 4 is a cassette detector for the reproducing side tape T ₁ , 5 is a cassette detector for the recording side tape T ₂ , 6 is a reverse mode changeover switch, 7 is a function switch, and 9 is a cassette deck mechanism.

The function switch 7 detects a signal to be recorded by selecting the position and inputs it to the CPU 8. There are three positions, "tape", "radio" and "line in", and the dubbing operation is executed at the "tape" position. However, any switch other than the function switch 7 may be used as long as it can switch the dubbing operation between the enabled state and the disabled state.

A control procedure for dubbing is programmed in the CPU 8, and the cassette deck mechanism section 9 is programmed in accordance with this program.
To control.

The reverse mode selector switch 6 is "single-sided reproduction",
There are three position reverse modes, "duplex playback" and "repeated duplex playback", "single-sided playback" stops at the tape end with only one side of A side or B side, "double sided playback" means A side (B side Surface) → B surface (A surface) → stop, "repeated double-sided reproduction" is to reversely reproduce the A and B surfaces at the tape end of each surface by reversing.
However, in the case of "repeated double-sided reproduction", recording is stopped at the tape end of the B side. During dubbing, when the reverse mode selector switch 6 is in the "single-sided reproduction" position, the single-sided dubbing mode is set, and when the reverse mode selector switch 6 is in the "double-sided reproduction" or the "repeated double-sided reproduction" position, the double-sided reproduction is performed. The dubbing mode is set.

In the above configuration, the traveling direction determination means, the mode determination means, the forward direction dubbing control means, and the reverse direction dubbing control means described in the claims are realized by the CPU 8.

Next, the operation of the cassette tape recorder having the above structure will be described with reference to the flowchart of FIG.

First, the cassette of the recording tape T ₂ starts from the state of “present”.

First, in step, it is determined whether or not a record button (not shown) is turned on, and if it is turned on, the state of the function switch 7 is determined in step. If the position of the function switch 7 is "tape", then it is determined "whether" on the playback side of the cassette tape T ₁ in step, when the cassette is "Yes", the both tapes simultaneously driven in step Set to dubbing state. On the other hand, the position of the function switch 7 is "tape" in step.
In other cases, and when the cassette of the reproduction side tape T ₁ is “absent” in any step, neither dubbing operation is performed,
At the step, only the recording tape T ₂ is in the reproduction state. In this case, it keeps so as not to operate the playback side tape T ₁ when the playback side tape T ₁ is "Yes".

Next, in a step, the reproduction side tape T ₁ or the recording side tape T ₂
If either one of them has become END (tape end), and if either one becomes END, then it is judged in the next step whether the other tape is in the forward state. If it is in the forward state, the process proceeds to step to judge the state of the reverse mode changeover switch 6, and the next operation is performed. That is, when the position of the reverse mode changeover switch 6 is determined to be "single-sided playback" in the step, recording side tape from being a single-sided copying mode of the cassette tape, the process proceeds to step and the reproducing side tape T ₁ The dubbing operation of T ₂ is released, and the cassette deck mechanism section 9 is controlled to a stopped state. On the other hand, the position of the reverse mode changeover switch 6 in step when it is determined that the "duplex reproduction" or "repeat duplex reproduction", since a double-sided copying mode of the cassette tape, and reproduction side tape T ₁ at step The recording-side tape T ₂ is temporarily stopped and the reproducing-side tape T ₁ is fast-forwarded. Next, in step, the playback tape T ₁ is END
When END is detected, the fast-forward operation of the reproduction side tape T ₁ is stopped and the fast-forward operation of the recording side tape T ₂ is performed in step. Next, in step, it is judged whether the recording side tape T ₂ has become END, and when END is detected, the fast forward operation of the recording side tape T ₂ is stopped,
The cassette deck mechanism section 9 is set to the reverse mode, the reproducing side tape T ₁ and the recording side tape T ₂ are simultaneously driven in step, the reverse dubbing operation of the B side is started, and the process returns to step. Then, the reproduction side tape T ₁ or the recording side tape T ₂
When END is reached, the process proceeds to the step, but in this case, since it is not the forward state, the process proceeds to the next step, the reverse dubbing operation is canceled, and the cassette deck mechanism section 9 is controlled to the stopped state.

FIGS. 3 and 4 show the states of the reproducing side tape T ₁ and the recording side tape T ₂ when dubbing is performed by the above-described processing procedure. If Figure 3 is recording side tape T ₂ is longer than the reproduction side tape T _1, FIG. 4 is a case where the reproduction side tape T ₁ is longer than the recording side tape T _2.

As described above, even when only _one of the reproducing side tape T ₁ or the recording side tape T ₂ becomes END during the dubbing, as shown in steps ₁ to 3, the reproducing side tape T ₁ and the recording side tape T _{1 are} recorded. since fast forward both T _2, reproducing-side tape
It is possible to reliably fast-forward both tapes T ₁ and T ₂ to the tape end without detecting which of T _{1 and} recording-side tape T ₂ has become END, and also possible to simplify the program.

It should be noted that it is also possible to detect the tape that has become the tape end and fast-forward only the tape that has not become the tape end by the program setting of CPU8. In this case, since the outputs of the rotation detector ₂ of the reproduction side tape T _{1 and} the rotation detector 3 of the recording side tape T ₂ are input to the CPU 8, the detection can be easily performed.

(Effects of the Invention) The dubbing device of the cassette tape recorder according to the present invention reaches the tape end when dubbing in the double-sided playback mode and the determination result indicates the reverse direction, that is, when the double-sided dubbing is completed. Even if there is no tape recorder, both tape recorders are stopped at that time, so that the problem that the dubbing in the forward direction is started again after the dubbing in the reverse direction is solved. Also, when the determination result indicates dubbing in the single-sided playback mode, if the cassette tape in one tape recorder section has reached the tape end, the cassette tape in the other tape recorder section has not reached the tape end. Even
Since both tape recorders are stopped at that time, the problem that even reverse dubbing is executed despite the single-sided playback mode is solved. That is, according to the dubbing device of the present invention, the occurrence of dubbing mistakes can be reduced.

Also, the dubbing device of the cassette tape recorder according to the present invention is either a cassette tape loaded in the first tape recorder portion or a cassette tape loaded in the second tape recorder portion when dubbing in the double-sided playback mode. By detecting that the tape has reached the tape end, at least the tape recorder part that has not reached the tape end is fast-forwarded to wind both cassette tapes to the tape end, and at the same time both cassette tapes are reversed. Since it is configured to move to the dubbing operation on the opposite side, it is possible to shorten the waiting time before moving to the dubbing operation on the opposite side, and the tape length between the cassette tape on the playback side and the cassette tape on the recording side for dubbing. Recording without causing head loss on both sides of the tape In which always it is possible to perform dubbing from the head portion side of the cassette tape.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is a schematic block diagram of a cassette tape recorder, FIG. 2 is a flow chart for explaining a dubbing method, and FIGS. 3 and 4 are Diagrams showing the states of the reproducing side tape and the recording side tape, FIGS. 5 to 8 are schematic diagrams showing the states of the reproducing side tape and the recording side tape which are dubbed by the dubbing method of the conventional cassette tape recorder. FIG. 1 ... cassette tape 2 ... playback tape rotation detector 3 ... recording tape rotation detector 4 ... playback tape cassette detector 5 ... recording tape cassette detector 6 ... reverse mode Changeover switch 7 ...... Function switch 8 ...... CPU 9 ...... Cassette deck mechanism T ₁ ...... Playback side cassette tape T ₂ ...... Recording side cassette tape

Claims (1)

[Scope of utility model registration request] 1. A first tape recorder section having at least a reproducing function and a second tape recorder section having at least a recording function, and at the same time a reproducing operation of the first tape recorder section is performed, a second tape is provided. In the cassette tape recorder that can perform reverse operation by recording the recording part and dubbing from the cassette tape on the reproducing side to the cassette tape on the recording side, it is judged whether the traveling direction of the cassette tape is the forward direction or the reverse direction. Means, a mode determination means for determining whether it is a single-sided playback mode or a double-sided playback mode, and a cassette tape loaded in the first tape recorder section or a second tape recorder section loaded in the dubbing mode. When it detects that one of the cassette tapes has reached the end of tape, the running When the judgment result obtained by the direction judging means and the mode judging means is the forward direction and indicates the double-sided reproduction mode, at least the tape recorder portion which has not reached the tape end is fast-forwarded to bring both cassette tapes to the tape end. Forward direction dubbing control means for causing the first tape recorder section and the second tape recorder section to stop when the judgment result indicates at least either one of the reverse direction and the single-sided reproduction mode while winding. Reverse direction dubbing control for switching the first tape recorder section and the second tape recorder section to the reverse side at the same time to start the reverse dubbing operation when both cassette tapes are wound up to the tape end by the direction dubbing control means. Specially equipped with means Dubbing apparatus of a cassette tape recorder to.