JPS6320751A - Recording/reproducing device - Google Patents

Abstract

PURPOSE:To perform reproduction at and after a recording start time point without discontinuing a recording action even after the recording start time point, by controlling mutually >=2 recording/reproducing devices with the timing corresponding to the driving time of a recording medium. CONSTITUTION:When an operation switch 7 is turned on, a control circuit 3 switches a video tape recorder VTR 1 to a rewind mode from a video recording mode and a VTR 2 to a video recording mode respectively. A timer 4 counts the recording time of the VTR 1 and stores this counting result in a memory 6. Then the VTR 1 is rewound by a time equivalent to the counting result stored in the memory 6. When this rewind mode is over, the VTR 1 is set under a reproduction mode. At the same time, the stored data are subtracted by a subtraction timer 5. When this timer 5 is set at 0, the VTR 1 is set under a record mode. While the VTR 2 is switched to a reproduction mode from a rewind mode. these actions are repeated until the switch 7 is turned on again. Thus it is possible to perform reproduction at the recording start time point without discontinuing a recording action.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording and reproducing device that mutually controls two or more recording and reproducing devices so that signals to be recorded are recorded on each device. be.

[Conventional technology]

It is difficult for conventional recording and reproducing apparatuses to reproduce a desired signal source from the point at which recording is started without stopping the recording state while recording the desired signal source.

For example, even if you return home while recording while you are away using a timer and want to play back from the beginning of the recording, you cannot put the device into playback mode until the recording is finished.

[Problem that the invention seeks to solve]

The present invention has been made to eliminate the drawbacks of the above-mentioned conventional devices, and is a recording/playback device that is capable of continuing recording even during recording and performing playback from the start of recording. The purpose is to provide

[Summary of the invention]

The recording/playback device of the present invention allows two or more recording/playback devices to mutually enter recording/playback and rewind modes, so that when one device is recording, the other device is rewound and played back. It is composed of

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In Figure 1, 1 and 2 are VTRs that can record and play, respectively.
Reference numeral 13 indicates a VTRI, a control circuit for switching the mode of 2 to recording and playback 9 to rewind, 4 a timer, and 5 a subtraction timer, each of which sets conditions for switching the output of the control circuit 3. 6 is a memory, which stores the recording time of VTRI, 2; 7 is an operation switch, and 8 is an editing switch.

FIG. 2 shows the overall system configuration including the input/output switching section using the device shown in FIG.
0 supplies a video signal for recording to VTR1 or VTR2 via switch SWI.

On the other hand, the reproduction output of VTRI or 2 is output to the television 11 via switch SW2. Switch SWI and SW
2 switching control signals are output from the control circuit 3.

Next, the operation of this invention will be explained in Figs. 1, 2, and 3.
This will be explained along with the timing chart shown in the figure.

When the operation switch 7 is turned on, the VTR 1 is rewound by the output from the control circuit 3 from the state in which the VTR 1 is recording a signal from the tuner 9 or the video source 10 (recording A). At this time, switch SWI
is switched, and VTR2 records the same signal (Recording B
).

Further, the switch SW2 is switched, and the video output of the VTR 1 and the television 11 are connected. Timer 4 is VTRI
The time from the start of recording until the operation switch 7 is turned on is counted. This time is stored in the memory 6 as data 1. The amount of rewinding of the VTRI is rewound by the time of this data 1.

When VTRI rewinding is completed according to data 1, V
At the same time as TRI starts playback operation, stored data 1
is subtracted by the subtraction timer 5. When the subtraction timer 5 is "0", that is, the time when the VTRI first recorded (recording period A) has elapsed, the VTRI enters the recording mode, the switch SWI is changed, and the video signal is is applied to the video signal input of VTR1.

Further, the switch SW2 is switched, and the video output from the VTR 2 is supplied to the television 11. Next, the VTR 2 enters a rewind mode, rewinds by the amount of time corresponding to the recording date, and enters a playback mode.

By repeating the above operations, even if the VTR 1 or 2 is recording, the recorded video signal can be viewed on the television 11 since the VTR 2 or 1 is in the playback mode. Note that the above operation continues until the operation switch 7 is turned on again.

Next, the editing mode will be explained with reference to FIG.

When the edit switch 8 is turned on, the time added by the timer 4 ((data 2) + (data 3 in FIG. 3)
) + (time corresponding to data 4)) VTRI, VT
R2 is rewound.

In other words, the film is rewound to the point in time when the operation switch 7 was first turned on. Thereafter, the VTR2 goes into playback mode, the VTRI goes into recording mode, and the data is dubbed from VTR2 to VTR1.

This time is carried out for a period corresponding to data 2.

Next, the VTRI is fast-forwarded in time corresponding to data 3,
VTR2 is in playback mode, VTRI is in recording mode, and VTR
2 to VTR1.

However, as it is, there is not enough space to record the time of recording B on the VTRI recording medium, so as shown in Figure 4, after playing recording A (playback A), the time of recording B (data 2
) it is necessary to fast-forward the VTRI recording medium (eg, tape). In other words, if you wish to edit, please start from the beginning with Figure 4.
Control two decks in this mode.

The above mode switching control is performed by the control circuit 3.

In the above embodiment, recording, playback, and rewinding are performed.

A timer was used as control data for fast forwarding, but ■TRI
, a tape counter built into the VTR 2 may be used. Alternatively, the above operation may be controlled by recording a control signal on a recording medium and detecting the signal at the time of starting or ending recording, etc.

Also, as a stop condition for editing operations, when the subsequent data (data 4) is shorter than the immediately preceding data (data 3), there is no need to dub the recorded portion of data 4, and the 0 rewind time to stop the editing operations is counted. This makes it even more accurate.

Further, in the above embodiment, the case of a VTR has been explained, but other recording and reproducing devices such as an audio tape may be used.

Further, even if there are three or more recording/reproducing devices, the same operation as described above can be performed.

〔Effect of the invention〕

As described above, according to the present invention, two or more recording and reproducing devices are mutually controlled at a timing corresponding to the driving time of the recording medium, so even when the time has elapsed since the start of recording, the recording is not stopped. It is possible to play back from the point at which recording started.

Furthermore, it is also possible to edit the recording media recorded by each recording/reproducing device into one.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is an overall diagram of a system to which the apparatus of FIG. 1 is applied, and FIG. 3 is a timing chart of the recording operation in the apparatus of FIG. FIG. 4 is a timing chart during the editing operation in the device shown in FIG. 1. 1.2...VTR3...Control circuit 4.
... Timer 5 ... Subtraction timer 6 ... - Memory 7 ... Operation switch 8 ... Edit switch

Claims (1)

[Claims] It has at least two or more recording and reproducing devices, a control circuit that controls each mode of each of the recording and reproducing devices, and a detection means that detects a recording period of each of the devices, and the control circuit according to the data of the detection means. What is claimed is: 1. A recording and reproducing apparatus characterized in that the mode of each recording and reproducing device is controlled.