JPH079719B2 - Auto-river type cassette tape recorder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auto-reverse cassette tape recorder capable of automatically switching the tape running direction by detecting leader tape portions provided at the beginning and the end of a cassette tape. Is.

2. Description of the Related Art In recent years, cassette tape recorders detect the leader tape portion provided at the beginning or the end of the cassette tape and automatically switch the tape running direction from the demand for long-term continuous recording or long-term continuous playback. Of A
The number of tape recorders of the auto-reverse type that continuously records and plays from side B to side B is increasing.

On the other hand, one of the convenient functions of tape recorders is the auto-rec mute function, which is often used.

This is to automatically create a no-signal section between songs for selecting songs when playing a cassette tape. For example, when recording of a certain song is finished during recording, it can be fixed by operating the Auto Rec Mute button. Time (the time that can be detected when selecting a song, usually about 3 to 4 seconds) After running the tape in the no-signal recording state, it becomes a pause state and automatically sets the interval between the song to be recorded next. It can be made.

An auto-reverse type cassette tape recorder having a conventional auto-rec mute function will be described below with reference to the operation explanatory diagram of FIG.

Reference numeral 1 is a cassette tape having a track 2 for side A and a track 3 for side B, and a leader tape 4 at the end.
have. The cassette tape 1 is fed in the direction of arrow a when recording the track 2 and in the direction of arrow b when recording the track 3.

Now, when the recording of the song 5 is finished at the point c and the REC mute button is operated, the signalless recording section 6 is automatically made for a fixed time t ₁ (about 3 to 4 seconds), and the pause state is set at the point d. .

Next, a case where the tape running time t ₂ from the point e at the end of the music 7 near the end of the track 2 of the cassette tape 1 to the point f at which the leader tape 4 at the tape end is detected is shorter than the time t ₁ will be described. .

When the rec mute button is operated at the point e, the signalless recording section 8 is produced, but the point f at which the leader tape 4 is detected before the fixed signalless time t ₁ has passed is reached and the tape running is automatically reversed. After that, the signalless recording state is further continued from the point g to the point h of the track 3 to automatically make the signalless recording section 9, and then the track is paused at the point h.

In other words, even when the REC MUTE operation is performed near the end of the tape, the REC MUTE works only for the time t ₂ + the time t ₃ + the time t ₄ required for the reversing operation corresponds to the REC mUTE time t _1. Then, from the end of track 2 to the start of track 3, signalless recording sections 8 and 9 were made.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned conventional tape recorder, as described above, the auto tape mute operation is performed near the end of the track 2 of the cassette tape 1 to start the auto tape mute operation. since the time t ₂ required to detect normal auto REC mute for a predetermined time when shorter than t ₁ is automatically in the time after switching the tape traveling direction t ₃ only auto REC mute operation is continued, the track When an unnecessary no-signal portion is created at the start end of the track No. 3 and the reproduction is started from the start end of the track No. 3, it takes time until the reproduced sound comes out, which is inconvenient.

In view of the above problems, the present invention provides an auto-reverse cassette tape recorder that can eliminate an unnecessary signalless recording section immediately after switching the tape running direction when the leader tape section is detected during auto-rec mute operation. To do.

Means for Solving the Problems In order to solve the above problems, the auto-reverse cassette tape recorder of the present invention is a mechanism drive control means for controlling forward and reverse running, temporary stop, stop, etc. of a cassette tape. Recording means for recording a recording signal on the cassette tape, recording signal mute means for interrupting a recording signal to the cassette tape by the recording means, and a leader tape for detecting a leader tape portion provided at the end of the cassette tape The detection means, the reverse operation command means for issuing a command to the mechanism drive control means by the output of the leader tape detection means to automatically switch the tape running direction, and the automatic recording mute operation means at the time of recording The above-mentioned mechanism drive control is performed so that the tape runs in a state where no signal is recorded for a certain time Means and the recording signal mute means, and the mechanism drive control means and the recording signal mute means temporarily stop the mechanism drive control means after the tape has been run in the no-signal recording state for the given period of time. An auto-rec mute operation command means for issuing a command, and the mechanism drive control means and the recording signal mute means operate according to the command of the auto-rec mute operation command means to perform the predetermined time during tape running in a no-signal recording state. When the leader tape detecting means detects the leader tape portion of the cassette tape before the elapse, the auto-rec mute for the mechanism drive control means and the recording signal mute means in response to the output of the leader tape detecting means. In addition to issuing a command to cancel the operation, the reverse operation After the mechanism driving control means according to a command from the decree means it is automatically switched tape running direction, in which a Auto REC muting canceling command means for issuing a command for pause the mechanism driving control means.

Operation The present invention has the above-described configuration, and immediately after the leader tape portion is detected during the auto-rec mute operation and the tape running direction is switched, the pause state is set and the auto-rec mute operation is canceled so that the next recording is started by the magnetic recording. Since it is possible to start from the beginning of the tape, there is no inconvenience that it takes a long time before the reproduced sound comes out when reproducing from the beginning of the tape.

Embodiment An auto-reverse cassette tape recorder according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a functional block diagram showing the configuration of an auto-reverse type cassette tape recorder in one embodiment of the present invention.

In FIG. 1, 11 is a mechanism drive control means for putting the mechanism into a mode such as recording, reproducing, pausing, or switching the tape running direction according to the operation mode,
Reference numeral 12 is a leader tape detecting means for detecting the leader tape portions provided at the beginning and the end of the cassette tape and outputting the same, and 13 is an output from the leader tape detecting means 12 for sending a command for switching the tape running direction to the mechanism drive control means 11 to reverse. It is an operation command means.

Reference numeral 14 is an auto-rec mute operation means, 15 is an auto-rec mute operation command output means for outputting an output to the mechanism drive control means 11 and the recording signal mute means 16 by operating the auto-rec mute operation means 14, and 17 is a leader tape detection means 12. It is an auto-rec mute operation cancellation command means for commanding the auto-rec mute operation command output means 15 to cancel the auto-rec mute operation by output. Further, the mechanism drive control means 11 controls the mechanism to the recording pause state when the command from the auto-rec mute operation command output means 15 is cut off by the output of the auto-rec mute operation cancellation command means 17.

FIG. 2 is a functional block diagram showing the construction of an auto-reverse type cassette tape recorder according to another embodiment of the present invention. The same components as those in FIG. 1 are designated by the same reference numerals and their description is omitted.

Reference numeral 18 denotes an auto-rec mute operation cancel command means, which receives the input from the leader tape detection means 12 when there is an input from the auto-rec mute command output means 15 and stops the auto-rec mute operation by the mechanism drive control means 11 to record. Outputs to go to suspend mode.

In both the constructions of FIGS. 1 and 2, when the leader tape detecting means 12 detects the leader tape during the auto-rec mute operation of the mechanism, the reverse operation command means 13 automatically changes the tape running direction, and The auto-rec mute operation cancellation command means 17, 18 cancels the auto-rec mute operation, and the recording is suspended.

FIG. 3 is a block diagram showing the construction of an automatic reverse type cassette tape recorder in one embodiment of the present invention.

Reference numeral 31 is an auto-reverse type mechanism portion, 32 is a recording head, and an input signal from a recording input terminal 33 is supplied via an amplifier 34, a recording signal mute means 35, and a recording amplifier 36. 37 is an operation input means, and an output is supplied to the microcomputer 40 by operating the button sound button 38, the auto recording mute button 39, etc., and the mechanism section 31 is controlled by the command of the microcomputer 40 to each mode according to the operation of each operation button. To be done.

Reference numeral 41 is a leader tape detecting means for detecting leader tape portions provided at the beginning and the end of the cassette tape, the output of which is input to the microcomputer 40.

FIG. 4 shows an essential part of a flow chart showing the operation of the microcomputer of the auto-reverse type tape recorder of the embodiment of the present invention.

The operation of this embodiment will be described below with reference to FIGS. 3 and 4.

First, a normal operation in which the leader tape is not detected during the auto recording mute operation will be described. When the operator presses the auto recording mute button 39 during recording, an input is input from the operation input means 37 to the microcomputer 40, and the microcomputer 40 receives the mechanism section 31.
Send an Auto Rec Mute operation command to. As a result, the auto recording mute operation is performed.

And either tape recorder as indicated by the microcomputer 40 in step 1 it is determined that it is in the auto REC mute operation, the process proceeds to step 2, the operation time of the auto REC mute step 2 has passed any given time t ₁ If it is determined that a certain time t ₁ has elapsed, the process proceeds to step 3 and the mechanism unit 31 is put into a recording pause state, and a non-signal portion for a certain time t ₁ is created after the signal recording unit. Become.

If it is determined in step 2 that the predetermined time t ₁ has not elapsed, the process proceeds to step 4, and since the leader tape portion has not been detected, the process returns to step 2.

Next, the operation when the leader tape detecting means 41 detects the leader tape portion during the auto recording mute operation will be described.

In step 2, it is determined that the auto-rec mute operation has not passed an arbitrary fixed time t _1, and the process proceeds to step 4.
In step 4, it is determined that the leader tape portion is detected, and the process proceeds to step 5. Here, it is determined whether the current tape running direction is the forward rotation direction. If it is the forward rotation, the process proceeds to step 6 and the mechanism portion 31 The drive direction is switched and the recording is paused to cancel the auto recording mute operation.

Further, if it is determined in step 5 that the tape running direction is not forward rotation, the tape is set in the stopped state so that the recording on the forward rotation side is not carelessly erased.

As described above, according to the present embodiment, the time from the start of auto recording mute to the detection of the leader tape is an arbitrary fixed time t ₁
If it is shorter, that is, if the leader tape detection means 12 detects the leader tape during the auto-rec mute operation, the auto-rec mute operation cancel command means 17 switches the tape running direction and then the auto-rec mute operation is set as the recording stop state. Since it can be canceled, an unnecessary no-signal portion is not created, and when reproducing from the tape start end at the time of reproduction, there is no inconvenience that it takes time until the reproduced sound comes out.

EFFECT OF THE INVENTION The auto-reverse cassette tape recorder of the present invention is
Mechanism drive control means for controlling forward / reverse running, temporary stop, stop, etc. of the cassette tape, recording means for recording a recording signal on the cassette tape, and shutting off the recording signal to the cassette tape by the recording means. Recording signal muting means, and leader tape detecting means for detecting a leader tape portion provided at the end of the cassette tape,
Reverse operation command means for issuing a command to the mechanism drive control means to automatically switch the tape running direction by the output of the leader tape detection means, and no signal for a certain fixed time by operating the auto-rec mute operation means during recording. A command is issued to the mechanism drive control means and the recording signal mute means to perform tape running in the recording state, and the tape drive is performed in the non-signal recording state for the arbitrary fixed time by the mechanism drive control means and the recording signal mute means. After that, the mechanism drive control means and the recording signal mute means operate according to the command of the auto-rec mute operation command means for issuing a temporary stop command to the mechanism drive control means, and no signal is generated. Any of the above while running the tape in the recording state When the leader tape detection means detects the leader tape portion of the cassette tape before the elapse of a fixed time, the mechanism drive control means and the recording signal mute means are automatically operated by the auto controller in response to the output of the leader tape detection means. In addition to issuing a command to cancel the rec mute operation, the mechanism drive control means automatically switches the tape running direction in response to a command from the reverse operation command means, and then issues a pause command to the mechanism drive control means. When the leader tape detecting means detects the leader tape portion of the cassette tape before the lapse of the arbitrary fixed time during the auto rec mute operation, the tape running direction is reversed, We decided to cancel the rec mute operation and suspend it. This eliminates the inconvenience that it takes a long time before the reproduced sound comes out during reproduction without creating an unnecessary no-signal part immediately after the leader tape is detected during the auto-rec mute operation and the tape running direction is switched. .

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the construction of an auto-reverse cassette tape recorder in one embodiment of the present invention, and FIG. 2 is a functional block diagram showing the construction of an auto-reverse cassette tape recorder in another embodiment of the present invention. FIG. 3 is a block diagram showing the construction of an automatic reverse type cassette tape recorder according to an embodiment of the present invention, and FIG. 4 is a main part of the operation of a microcomputer of the automatic reverse type cassette tape recorder according to an embodiment of the present invention. It is a flowchart figure which shows. FIG. 5 is a diagram showing an operation of a conventional auto-reverse type cassette tape recorder. 11 ... Mechanism drive control means, 12 ... Leader tape detection means, 13 ... Reverse operation command means, 14 ... Auto-rec mute operation means, 15 ... Auto-rec mute operation command output means, 16 ... Recording signal mute Means, 17,18
...... Automatic mute operation cancellation command means.

Claims (2)

[Claims] 1. A mechanism drive control means for controlling forward and reverse running, temporary stop, stop, etc. of a cassette tape,
Recording means for recording a recording signal on the cassette tape;
A recording signal mute means for interrupting a recording signal to the cassette tape by the recording means, a leader tape detecting means for detecting a leader tape portion provided at the end of the cassette tape, and the mechanism by the output of the leader tape detecting means. The reverse operation command means for issuing a command to the drive control means to automatically switch the tape running direction and the mechanism for running the tape in a no-signal recording state by operating the auto-rec mute operation means during recording A command is issued to the drive control means and the recording signal mute means, and the mechanism drive control means and the recording signal mute means temporarily drive the mechanism drive control means after the tape has been run in the non-signal recording state for the certain period of time. Auto-rec mute operation command that issues a stop command Step, and the mechanism drive control means and the recording signal mute means operate in response to a command from the auto-rec mute operation command means, and the leader tape detection means before the elapse of the given fixed time during tape running in a signalless recording state. Detects a leader tape portion of the cassette tape, issues a command to the mechanism drive control means and the recording signal mute means to cancel the auto-rec mute operation in response to the output of the leader tape detection means. An auto-rec mute operation cancellation command means for issuing a temporary stop command to the mechanism drive control means after the mechanism drive control means automatically switches the tape running direction by a command from the reverse operation command means. This is an auto-reverse type cassette tape recorder. 2. The mechanism drive control means automatically changes the tape traveling direction in response to the instruction from the reverse operation instruction means when the leader tape detecting means detects the leader tape only when the tape traveling direction is the forward direction. The automatic reverse cassette tape recorder according to claim 1, wherein the automatic reverse cassette tape recorder is configured to be switched to.