JPH03100969A - Recording and reproduction system - Google Patents

Abstract

PURPOSE:To set time to spare until commanding the commencement of recording from an input of a signal as a long period by recording a signal to a 1st recording medium and a 2nd recording medium alternately and repeatedly with a time lag in their prescribed positions. CONSTITUTION:The recording in a deck B is commenced in the midst of the recording in a deck A. Then, the recording in the deck A is once stopped in the midst of the recording in the deck B, and a magnetic tape 10 is rewound to a start discriminating signal recording position, from which the recording is then commenced again. And, the recording of the deck B is once stopped in the midst of the recording in the deck A, and a magnetic tape 30 is rewound to a start discriminating signal recording position, from which the recording is then commenced again. Thus, an operation for recording an input signal for a prescribed time to each leading part (part immediately after the start discriminating signal recording position) of the tapes 10 and 30 in alternation with a time lag is repeatedly performed. Consequently, misrecording of the beginning part of music will never take place.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording and reproducing method suitable for use in, for example, audio tape recorders, video tape recorders, and the like.

[Conventional technology]

For example, when listening to music broadcast on the radio,
Along the way, you may find that you like the music and want to record it on magnetic tape. In such a case, even if you start recording in the middle of a song, you will not be able to record the beginning of the song that was previously broadcast.

Therefore, the applicant previously proposed that the input signal is always delayed for a predetermined period of time, and that the delayed signal is recorded when the start of recording is commanded (Japanese Patent Laid-Open Publication No. 117106/1982).

Another possibility is to record music continuously on an endless magnetic tape, for example.

[Problem to be solved by the invention]

However, the previous proposal requires a delay circuit to delay the signal, which not only requires a special configuration, but also makes it difficult to achieve long delays, making it difficult to reduce the time delay from the start of broadcasting to the start of recording. The drawback was that it could not be made longer.

Furthermore, devices that use endless tapes are special devices that are not widely used in general households, and have short recording times.

This invention was made in view of this situation, and it is possible to lengthen the time from the start of broadcasting to the start of recording, and it is also possible to record long-time signals on commonly used recording media. This is to make it possible to do this.

[Means to solve the problem]

The recording and reproducing method according to claim 1 starts recording the input signal to the second recording medium during recording of the input signal to the first recording medium, and stops recording the input signal to the second recording medium. During recording, recording of the input signal to the first recording medium is temporarily stopped, the recording position is returned to the start position, and then recording of the input signal is started again, and recording of the input signal to the first recording medium is performed. During the process, recording of the input signal to the second recording medium is temporarily stopped, the recording position is returned to the start position, and then recording of the input signal is started again, alternately, until a predetermined command is input. repeat.

The recording and reproducing method according to claim 2 starts recording the input signal to the second recording medium during the recording of the input signal to the first recording medium, and stops recording the input signal to the second recording medium. During recording, recording of the input signal to the first recording medium is temporarily stopped, the recording position is returned to the start position, and then recording of the input signal is started again, and recording of the input signal to the first recording medium is performed. During the process, recording of the input signal to the second recording medium is temporarily stopped, the recording position is returned to the starting position, and then recording of the input signal is started again.

Repeat alternately until a recording command is input, and when the recording command is input, recording starts on the first and second recording media at a time closer to the time when the recording command is input. , and the recording that was started at a more distant time continues thereafter until the recording command is canceled.

The recording/reproducing method according to claim 3 starts recording the input signal to the second recording medium when a command is given to stop recording the input signal to the first recording medium, and starts recording the input signal to the second recording medium. While recording the input signal to.

After temporarily stopping recording of the input signal on the first recording medium and returning the recording position to the start position, recording of the input signal is started again, and while recording the input signal on the first recording medium, 2, the operation of once stopping the recording of the input signal on the recording medium and returning the recording position to the start position, and then starting recording the input signal again is repeated alternately until a predetermined command is input.

[Effect]

The recording and reproducing method according to claim 1 has a so-called double-deck configuration, for example, a first recording medium as a first recording medium.
The input signals are recorded alternately on the magnetic tape and the second magnetic tape as the second recording medium, with some overlap, and while being recorded on one magnetic tape, the input signals are recorded on the other magnetic tape. is rewound to the recording start point, and recording is started again. This operation is repeated.

Therefore, it is possible to set a long time margin from the arrival of the input signal to the start of recording, and it is also possible to record for a long time using ordinary magnetic tape or the like.

Further, in the recording/reproducing method according to claim 2, the first
When a command is given to start full-scale recording while signals are being recorded alternately on the second recording medium and the second recording medium, the recording that was started at a distant timing by that command continues as it is. The other recording is stopped.

Therefore, compared to the case where the recording started later in time is continued, the length of the input signal that is continuously recorded can be made longer, which is advantageous for subsequent editing.

Further, in the recording and reproducing method according to the third aspect, when recording is stopped, alternate recording on the first recording medium and the second recording medium is automatically started.

Therefore, the operability is improved, and even if, for example, the next music signal starts again after a relatively short period of time has passed after the recording of one broadcast music ends, it is possible to record the beginning of the next music signal. Leakage can be prevented.

〔Example〕

FIG. 1 is a block diagram showing the structure of an embodiment of an audio tape recorder to which the recording/reproducing method of the present invention is applied.

In the figure, 11 is an input terminal into which a signal is input from a tuner or the like (not shown), 12 is a recording/reproducing head for recording and reproducing the input signal on the first magnetic tape 10, and 13 is a signal recorded on the magnetic tape 10. This is an erasing head that erases. 1
4 is a switch.

The signal input from input terminal 11 is sent directly to output terminal 1.
5 or to the recording/reproducing head 12 via a recording amplifier 18. Or again.

A signal input via the reproducing amplifier 17 and reproduced by the recording/reproducing head 12 is outputted to the output terminal 15 . 16
is a head selection switch, which switches the recording/playback head 12 during recording.
The terminal to which the reproducing amplifier 17 is connected is grounded, and the terminal to which the recording amplifier 18 is connected during playback is grounded. A detection circuit 19 detects a start signal, which will be described later, from the output of the regenerative amplifier 17 and outputs the detection signal to the microcomputer 53.

Reference numerals 21 and 22 are motors driven by drivers 24 and 25, respectively, which rotate reels or capstans (none of which are shown). 23 is a plunger that presses a pinch roller (not shown) onto the capstan.

As described above, one deck A is configured.

Similarly, a magnetic tape 30, an input terminal 31, a recording/reproducing head 3
2. Erase head 33, switch 34, output terminal 35, head selection switch 36, reproduction amplifier 37, recording amplifier 3
8, a detection circuit 39, motors 41 and 42 for the reel and capstan, a plunger 43, and a driver 44 and 45 constitute the other deck B.

51 is an oscillator that generates an erase signal and drives the erase head 1.
3 and 33. A driver 52 drives the plungers 23 and 43. 54 is a key, each circuit 1
It is operated when inputting a predetermined command to the microcomputer 53 that controls the operation of the means and the like. A display 55 is controlled by the microcomputer 53 and displays a predetermined display.

In the above description, only the signal path for one channel is shown in each of decks A and B, but it is also possible to have two channels each so that left and right stereo signals can be recorded and reproduced.

Next, its operation will be explained.

When the key 54 is operated to command recording on deck A, for example, the microcomputer 53 causes the driver 24.
5 to drive the motors 21 , 22 and via the driver 52 to drive the plunger 23 . This results in
The pinch roller is pressed against the rotating capstan, and the magnetic tape 10 is fed out from the supply reel and wound onto a take-up reel.

Further, the switch 14 is switched to connect the input terminal 11 to the recording amplifier 18, and the head changeover switch 16 is switched to connect the input terminal 11 to the recording amplifier 18.
The side connected to 7 is grounded.

Also, the oscillator 51 is operated, and its output is transmitted to the erase head 13.
supplied to As a result, the signal input from the input terminal 11 is transmitted to the switch 14. The signal is supplied to the recording/reproducing head 12 via the recording amplifier 18 and recorded on the magnetic tape 10.

On the other hand, when playback is commanded, the switch 14 is switched, the playback amplifier 17 is connected to the output terminal 15, and the head selection switch 16 is switched, so that the side of the recording/playback head 12 connected to the recording amplifier 18 is grounded. Ru. Therefore, a signal reproduced from the magnetic tape 10 by the recording/reproducing head 12 is outputted to the output terminal 15 via the reproduction amplifier 17 and the switch 14.

Similarly, when a predetermined command is input, recording or playback is performed on deck B.

Decks A and B can operate simultaneously and independently.

Next, the operation in the recording standby mode will be explained with reference to the flowchart shown in FIG.

When the key 54 is operated to command the recording standby mode, the microcomputer 53 first sets deck A to the recording mode and records a start identification signal on the magnetic tape 10 (step SL). This start identification signal may be set as a no signal to form a blank section, or may be recorded as a specific signal.

When recording a specific signal5. Deck A is set to recording mode.

In addition, when recording no signal to form a blank area, deck A is set to recording mode, but when using an unrecorded tape, for example, the magnetic tape is moved for a predetermined time in playback mode or fast forward mode. It is also possible to form a blank space.

Next, in the headset, recording of the signal input from the input terminal 11 is started, and the Flag is set to A (82).Furthermore, it is determined whether or not the start of recording has been commanded by the key 54. It is.

When the start of recording is not instructed, it is determined whether a predetermined time (one minute in the embodiment) has elapsed after setting the recording standby mode (S3, S4).

If the start of recording is not commanded after one minute has elapsed, the microcomputer 53 sets the B deck to the recording mode, records a start identification signal on the magnetic tape 30 (S5), and subsequently sets the B deck to the recording mode. At this point, recording of the signal input from the input terminal 31 onto the magnetic tape 30 is started (S6). Input terminal 11 to input terminal 31
If the same signal source is connected, the same signal will be recorded redundantly on the magnetic tapes 10 and 30.

After a predetermined period of time (one minute in the case of the embodiment) has elapsed after the start of recording of the signal on the B deck, it is determined whether or not the start of recording has been commanded, in the same way as in the case described above (
S7, S8).

If the start of recording is not commanded within one minute after the start of recording of the signal on the B deck, the Flag is changed from A to B, the recording on the A deck is stopped, and the magnetic tape 10 is rewound. When the detection circuit 19 detects the start identification signal, the magnetic tape 10 is stopped (S9). When the magnetic tape 10 is rewound to the position where the start identification signal was recorded, the magnetic tape 10 is transported in the forward direction again.
Recording of the signal from the input terminal 11 is started (S10
).

After rewinding, if a command to start recording is not input within one minute after restarting recording, Flag is set to A again, recording is stopped on deck B, and the detection circuit 39 outputs a start identification signal. The magnetic tape 30 is rewound to the detected position (SL, 1 to 513).

Thereafter, the processing from step 86 onwards is repeated.

The above operation is schematically shown in FIG. 3. That is, in the middle of recording on deck A, recording on deck B is started. Then, in the middle of recording on deck B, recording on deck A is temporarily stopped, the magnetic tape 10 is rewound to the start identification signal recording position, and recording is started again from there. Also, during the recording on deck A, recording on deck B is temporarily stopped, the magnetic tape 30 is rewound to the start identification signal recording position, and recording is resumed from there.

In this way, the operation of recording an input signal for a total of two minutes at the beginning of the magnetic tapes 10 and 30 (the part immediately after the start identification signal recording position) is repeated alternately with a time lag. Therefore, there is no possibility of omission of recording at the beginning of a song.

Next, when the start of recording is commanded, the magnetic tape is rewound to the start identification signal recording position in the deck for which Flag is not set, and then stopped (S7.514.S11.515 ), if the other deck is commanded to start recording if it has not yet started, the other deck will remain stopped (8).
3).

On the other hand, the recording operation of the deck whose flag is set continues as is.

What is set in this Flag is the deck that started recording earlier in terms of time based on when the recording operation was commanded.

Then, when the key 54 is operated at a predetermined timing to issue a command to stop recording, a new start identification signal is recorded at that position on the magnetic tape of the deck where recording has been done so far (816.517).

Furthermore, if the Flag at that time is A, step S6
If it is B, the process moves to step S1o, and the same process is repeated.

The above operation is schematically shown in FIG. 4. That is, when a recording start is commanded, in each cycle 12 of the recording standby mode, the deck on which recording was started earlier (at a time far from the time when the recording start was commanded) (in the case of Fig. 4) Recording continues on deck A), and the magnetic tape is rewound on the deck where recording was started later (at a time close to the time when recording start was commanded) (decker B in Figure 4). will be stopped.

After that, when a command is given to stop recording, recording starts on the deck that had been stopped (deck B), and some of the recording on the deck that was recording up until that point (deck A) is also started due to the start identification signal. Although the recording mode is interposed, the recording mode continues again, and the process automatically shifts to the recording standby mode described above.

Thus, according to this embodiment, the magnetic tape 10
or 1 minute from the time when one of the 30 is commanded to start recording.
The signal contents are recorded from a point in time equal to two minutes plus tape rewinding time to the point in time when a command to stop recording is issued. By making edits as necessary based on this recorded content, it is possible to obtain a magnetic tape on which the desired song is accurately recorded from the beginning to the end.

Furthermore, the number of minutes before the command to start recording can be changed as desired.

In the above, the case where the recording and reproducing method of the present invention is applied to an audio tape recorder has been explained as an example, but the present invention can also be applied to a video tape recorder and other devices that record and reproduce information on a predetermined recording medium. It is possible.

〔Effect of the invention〕

As described above, according to the recording and reproducing method according to claim 1, signals are repeatedly and alternately recorded at predetermined positions on the first recording medium and the second recording medium with time shifts. Therefore, it is possible to set a long margin of time from when a signal is input until the start of recording is commanded.

Furthermore, there is no need to use a special recording medium, and information can be recorded for a long time.

Furthermore, according to the recording and reproducing method according to the second aspect, since the recording that was started first is continued as it is, and the recording that was started later is stopped,
Compared to the case where it is reversed, the continuity of signal recording can be made longer, which is advantageous for subsequent editing.

Furthermore, according to the recording and reproducing method according to claim 3, when recording is stopped, the mode automatically shifts to a recording standby mode in which signals are recorded alternately on the first recording medium and the second recording medium. As a result, operability is improved, and even when a primary program is started immediately after the end of one program, it is possible to reliably prevent the beginning of the program from being omitted from recording.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an audio tape recorder to which the recording/reproducing method of the present invention is applied. FIG. 2 is a flowchart illustrating the operation of the recording standby mode of the embodiment shown in FIG. 3 and 4 are timing charts illustrating the operation of the recording standby mode of the embodiment of FIG. 1. 10...Magnetic tape 12...Recording/reproducing head 21.22...Motor 23...Plunger 30...Magnetic tape 32...Recording/reproducing head 41.42...Motor 43/-e plunger 53...Microcomputer 54...Key or more

Claims (3)

[Claims] (1) In the middle of recording the input signal to the first recording medium, start recording the input signal to the second recording medium, and in the middle of recording the input signal to the second recording medium, After once stopping recording of the input signal on the first recording medium and returning the recording position to the start position, recording of the input signal is started again, and recording of the input signal on the first recording medium is performed. On the way, a predetermined command is input to cause the operation to once stop recording the input signal on the second recording medium, return the recording position to the start position, and then start recording the input signal again. A recording and playback method that alternately repeats up to (2) In the middle of recording the input signal to the first recording medium, start recording the input signal to the second recording medium, and in the middle of recording the input signal to the second recording medium, After once stopping recording of the input signal on the first recording medium and returning the recording position to the start position, recording of the input signal is started again, and recording of the input signal on the first recording medium is performed. On the way, the recording of the input signal on the second recording medium is temporarily stopped, the recording position is returned to the start position, and the operation of starting recording of the input signal again is performed until a recording command is input. Alternately and repeatedly, when the recording command is input, recording is stopped on the one of the first and second recording media that was started at a time closer to the time when the recording command was input, and A recording/reproducing method in which recording started at a distant time is continued until the recording command is canceled. (3) When a command is given to stop recording the input signal to the first recording medium, start recording the input signal to the second recording medium, and start recording the input signal to the second recording medium. During the recording, recording of the input signal on the first recording medium is temporarily stopped and the recording position is returned to the start position, and then recording of the input signal is started again, and the recording of the input signal on the first recording medium is resumed. During the recording of the input signal, the recording of the input signal on the second recording medium is temporarily stopped, the recording position is returned to the start position, and then the recording of the input signal is started again. A recording and playback method that alternately repeats until a command is input.