JPH02216688A - Index device for video tape recorder - Google Patents

Abstract

PURPOSE:To easily and quickly confirm recorded pictures by recording a signal form multidisplay of first pictures of respective shots in the leading part of a video tape. CONSTITUTION:Picture memories 20a and 20b, multidisplay output circuits 21a and 21b, a changeover switch 22 and a multiindex button 23 are provided. Video signals corresponding to first pictures of respective shots are taken into picture memories 20a and 20b at the time of recording and are outputted as a multidisplay video signal so that plural pictures are displayed on one screen, and this multidisplay video signal is recorded on the leading part of the video tape. When this video tape is reproduced, the multidisplay video signal is outputted, and first pictures of respective shots are displayed on one screen of a monitor 6. Thus, an operator can quickly search programs without writing down neither memorizing correspondence relations between shots and video signals.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an indexing device for a video tape recorder, and is intended to allow all recorded contents to be checked immediately at the start of playback.

<Prior Art> When performing &i video on a camera-integrated video tape recorder or a stationary video tape recorder, recording may be stopped and restarted in the middle of one videotape. In this way, a plurality of shots of video signals are recorded on one videotape. The word here lol
yt is the recording state from the start of recording to the stop of recording.

When reproducing a video tape on which a video signal of a number of positions has been recorded, unnecessary shots are sometimes fast-forwarded and the video signal is reproduced from the beginning of the necessary shots, so-called "cue cueing".

Here, a conventional technique for cuing up a video tape recorder will be explained.

First, a first conventional example will be explained with reference to FIG. 4, which schematically shows a videotape.

As shown in FIG. 4, when recording on one videotape T, the first to fifth sheets S are recorded.

s,, s3. s4. When recording by performing s, the beginning of the video signal of each shot is recorded at the position where
Index signal (numeric information)! , 1°I3. I...
Record each I. The operator should take notes or memorize what content was recorded for which shot. sometimes,
The videotape T is fast-forwarded from the beginning to search for an index signal, and when the index signal (3) is detected, the videotape T is temporarily stopped and then the mode is shifted to the playback mode. In this way, the video signal of the third scene is cued and reproduced.

Next, a second conventional example will be explained. In the second conventional example, as in the first conventional example, an index signal is recorded at the position where the beginning of the video signal of each shot is recorded (see FIG. 4). During playback, by searching for the index signal I-■ from the beginning of the videotape T,
The first part of each shot is in playback mode, and the other parts are in fast forward mode.

Then, the video signal for one frame recorded at the beginning of each shot is temporarily stored in the memory, and the stored video signal is displayed on the monitor M as a multi-screen (see FIG. 5).

By looking at the multi-screen, the operator can see what kind of video signal is being recorded on which screen. Then, the videotape T is fast-forwarded again from the beginning to search for an index signal, and when the index signal of the slot in which the desired video signal is recorded is detected, the videotape is temporarily stopped and then the playback mode is entered. In this way, it is possible to cue the video signal of a desired shot and play it back. In this second conventional example, each video signal is displayed as a multi-screen, so it is difficult to take notes or remember what kind of video signal was recorded in which shot.
But that's fine.

<Problems to be Solved by the Invention> However, in the first conventional example, the operator has to take notes or remember which video signal was recorded in which shot, which is troublesome.

In addition, in the second conventional example, the video tape is repeatedly fast-forwarded and played back to extract the video signal at the beginning of each video signal and display it as a multi-screen. In this way, the cue search is performed after displaying multiple images, so compared to the first conventional example, extra time is required to display the multiple images. It takes.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, an object of the present invention is to provide a videotape indexing device that allows an operator to quickly locate the beginning of a video tape without having to take notes or memorize the correspondence between scenes and video signals. shall be.

Means for Solving the Problems> The present invention achieves the above object by capturing the video signal for the first screen of each shot into an image memory at the time of recording, and storing the stored plural screens. The present invention is characterized in that it is output as a multi-display video signal so that it can be displayed on one screen, and this multi-display video signal is recorded at the beginning of the videotape.

Function: Since the multi-display video signal is recorded at the beginning of the videotape, when this videotape is played back, the multi-display video signal is output, and the first screen of each shot is displayed on the monitor in one screen. Multi-displayed.

Embodiment FIG. 1 shows an embodiment in which the present invention is applied to a camera-integrated video tape recorder. As shown in the figure, in this video camera, a charge signal corresponding to the subject image formed by the optical system 1 is output from the image sensor 2, and this charge signal is processed by the image pickup aperture Is3 to produce a luminance signal v7 and a color signal. signal V
. The output will be closed. When these signals V, , Vo are input to the recording circuit 4, the luminance signal (7) is FM modulated, and the color signal (v0) is low frequency converted and then mixed to become the video Rf signal (2). This video Rf signal V
is recorded on the videotape T by the head H. During playback, the video Rf signal V taken out by the head H is played back
gi#! 5, the image is demodulated and sent to a monitor 6, and the photographed image is displayed on the monitor 6.

Mode switching such as photographing, playback, fast forwarding, rewinding, stopping and starting, etc., is performed by pressing each mode button provided on the operation button section 10. That is, when the mode button of the operation button unit 10 is pressed, the 1IIIIII7 unit 11 determines what mode it is in, and controls the capstan servo circuit 12 and the like to match the operation of the determined mode.

The configuration described so far is the same as the conventional one, but
In this embodiment, the image memory 20a.

20b, multi-display output circuits 21a, 21b;

Changeover switch 22. Multi-index button 23. Loading sensor 24. A/D converter 25a.

25b, D/A change I#, and 26a and 26b, the control unit 11 has a new control function as described below.

Here, this device will be explained according to actual usage conditions. Load a new videotape T into this video camera.
A loading detection signal is sent from the loading sensor 24 to the control section 11. Then, the control section 11 operates the capstan servo turn $12 to fast-forward the videotape T for a certain period of time (several seconds). As a result, a multi-use non-recording area N is created at the beginning of the video tape T, as shown in FIG. Note that in this example, fast forwarding was performed to create the multi-use non-recording area N, but it is also possible to forward slowly if the non-recording mode is set.

After that, when the shooting mode is selected by the operation button unit 10, the two switches 22 are turned on to the contacts 22a and 22C, and when shooting starts, the signal signals vY and v0 are processed and the video Rf signal V Then, this video signal V is recorded on the video tape T by the head H. Control unit 11
outputs an index signal I at the same time as shooting starts.

For this reason, for example, as shown in FIG.
When the shooting of S9 to S9 is performed, index signals 11 to I9 are recorded on the video tape T at the positions where the beginning of the video signal of each shot is recorded.

In addition, when photographing is started, the control unit 11 outputs a signal VV,
The signal for the first frame of V is sent to the A/D converter 25.
m, 25b converts it into a digital signal and stores it in the image memory 20a.
, 20b. For this reason, 9 pieces I-3, ~S
, the signal for the first frame of the video signal of each shot is stored in the image memory 20a.

20b.

When recording is performed to the end of the videotape T, or even if the multi-index button 23 is pressed even if recording is performed to the middle of the videotape T, the control unit 11 determines that all shooting has been completed.

If you judge that, l! l! II! 1II611 rewinds the videotape T and also switches the changeover switch 22.
into the contacts 22b and 22d.

Then, activate the multi-display output circuits 21a and 21b. The multi-display output circuits 21a and 21b are connected to the image memory 2.
Read out the signals for multiple frames (for example, 9 frames) stored in 0 a and 20 b in the same order as they were written, and extract data so that multiple screens (9 screens) can be displayed separately within one screen. And this is D/A weird f! I48
26a and 26b are converted into analog signals and output as multi-display luminance signals V, Y and multi-display color signal v1V.

The multi-display signals V, .

After all, in this video camera, when shooting, ■ When the tape is loaded, the tape is automatically advanced and a non-recording area for multi-use is formed at the leading edge of the tape. ■ For each shot, the video signal (video Rf signal)
and an index signal are recorded. (2) When the recording is completed, the tape is rewound and a multi-display signal is recorded in the multi-use non-recording area N.

When the videotape T recorded as described above is played back, first the multi-display video signal v1. lY,
■□. is played. This multi-display signal V, Y, V,
. contains the image information for the first frame of each shot, so when this is reproduced by the reproduction circuit 5 and displayed on the monitor 6, the image information of each shot is displayed as shown in Fig. 3. The first image is displayed in multiple formats.

By looking at the images displayed in multiple formats on the monitor 6, the operator can confirm which shots were taken and what kind of photography was taken. In other words, you can check what kind of shooting you have done at the beginning of playback. Then, when the operator who has confirmed inputs the index signal for cueing, for example, 3, into the control section 11 using the numeric keypad 13 and selects the cueing mode using the operation button section 10, the video tape T is fast-forwarded, and when the index signal (2) is detected, it is temporarily stopped and the mode is shifted to playback mode, so that the video of the third scene can be cued up and displayed.

In the above embodiment, the imaging output signal is taken into the Im image memory, but the present invention is not limited to this, but can also be applied to a MW type video tape recorder by taking the TV tuner output into the image memory.

<Effects of the Invention> As specifically explained above in conjunction with the embodiments, according to the present invention, a signal for multiple displaying the first image of each shot is recorded at the leading end of the videotape, so that it is possible to Then, the images of each recorded shot will be displayed in multiple formats at the start of playback, and what kind of j1! You can easily and quickly check whether the image was created.

[Brief explanation of the drawing]

1rEi is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the recording state of a videotape recorded by the device of this embodiment, and FIG. 3 is an explanation showing a multi-screen displayed by the device of this embodiment. 4 is an explanatory diagram showing the recording state of a videotape recorded by the conventional apparatus, and FIG. 5 is an explanatory diagram showing a multi-screen displayed by the conventional apparatus. In the drawings, 1 is an optical system, 2 is an imaging device, 3 is an imaging circuit, 4 is a recording circuit, 5 is a playback circuit, 6 is a monitor, 11 is a control unit, 20a and 20b are image memories, 21a and 21b are 22 is a changeover switch, 23 is a multi-index button, 24 is a loading sensor, T is a video tape, and H is a head. Patent application Agent: Fuji Photo Film Co., Ltd.

Claims (1)

[Claims] An indexing device used in a videotape recorder that may record video signals of multiple shots on one videotape, the indexing device detecting that a videotape is loaded into the videotape recorder. A sensor, an image memory that can store video signals for multiple screens, and a memory that can store video signals for multiple screens stored in the image memory so that the multiple screens stored in the image memory can be divided and displayed on one screen of the monitor. It has a multi-display output circuit that reads the data and outputs it to the monitor as a multi-display video signal, and a control section, and this control section is configured to detect when a loading sensor detects that a video tape is loaded into a video tape recorder. Then, the videotape is fed in non-recording mode for a certain period of time and then stopped, creating a non-recording area for multiplayer on the videotape, and each time a shot is started and a video signal is recorded,
The video signal for the first screen of the video signal is taken into the image memory, and when the recording is finished, the video tape is rewound, and the multi display video signal is output from the multi display output circuit, so that the video tape can be used for multi-use recording. An indexing device for a video tape recorder, characterized in that an indexing area is recorded.