JPH0792994B2 - Video tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a video tape recorder.

<Prior Art> In recent years, in order to allow a video tape recorder to be used for a wide range of purposes, a video tape is divided into a plurality of recording areas corresponding to a certain recording time, and recording / reproducing is performed in units of the recording areas. It is desirable to be able to do so.

That is, for example, in car sales, for example, an image of the exterior of the car, an image of the interior of the car, for example, in units of 5 minutes.
Various images necessary for sales such as performance and price list images are recorded on a video tape and a desired image portion is reproduced to proceed with a business negotiation, or as a video album, for example, in units of 5 minutes. It is conceivable that an image at a certain time is recorded and the image at a desired time is reproduced.

<Problems to be Solved by the Invention> However, no conventional video tape recorder has such a function.

The present invention has been made in view of the above points, and an object of the present invention is to provide a video tape recorder capable of dividing a video tape into a plurality of recording areas and performing recording and reproduction in units of the recording areas. .

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention records a control signal on the video tape while erasing the video tape over its entire width, and at the same time controls the control signal at regular intervals. Initializing means for previously dividing the video tape into a plurality of recording areas to initialize the video tape by recording the cueing signal by changing the duty of the signal, and the plurality of recordings of the initialized video tape. While designating a desired recording area in the area, based on the operation section operated to specify the recording or reproduction mode, the specification by the operation section and the cue signal recorded on the video tape, Only in the desired recording area of the initialized video tape, the video signal and the audio signal are recorded in synchronization with the control signal, Alternatively,
Recording / reproducing means for reproducing only the video signal and the audio signal recorded in the desired recording area of the initialized video tape based on the designation by the operation section and the cueing signal recorded on the video tape. It has.

<Operation> According to the above configuration, the control unit and the cueing signal at regular time intervals are recorded in advance on the video tape by the initialization unit and divided into a plurality of recording areas, and a desired recording area is created from the operation unit. By specifying the recording or reproduction mode as well as specifying,
Recording or reproduction is performed in units of a designated desired recording area, and the video tape can be recorded or reproduced in units of a fixed recording area.

<Examples> Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a main part of an embodiment of the present invention.

The video tape recorder 1 according to this embodiment uses the video tape 2 as a plurality of recording areas (hereinafter, referred to as “recording areas”) corresponding to a fixed recording time.
This recording area is divided into "pages", and recording and reproduction can be performed in page units as follows.

That is, the videotape recorder 1 of this embodiment records a control signal on the videotape 2 while erasing the videotape 2 over its entire width, and changes the duty of the control signal at regular time intervals to find the beginning. By recording a signal, the video tape 2 is pre-divided into a plurality of recording areas to initialize the video tape 2, and an initialization unit 3 of the initialized video tape 2 is recorded. Based on the operation unit 4 operated to specify a desired page in the recording medium and to specify a recording or reproduction mode, and an instruction from the operation unit 4 and a cue signal recorded on the video tape 2. The video signal and the audio signal are recorded in synchronization with the control signal only on a desired page of the converted video tape 2, or The recording / reproducing means 5 for reproducing only the video signal and the audio signal recorded on the desired page of the initialized video tape 2 based on the designation by the operation unit 4 and the cue signal recorded on the video tape 2. It has and.

The erasing means 3 erases the video tape 2 over the entire width thereof by the full-width erasing head when the mode for initialization and the recording interval of the cueing signal in page units are designated by the operation unit 4. A circuit 6 and a control signal and cue signal recording circuit 7 for recording a control signal and recording the cue signal as a cue signal by changing the duty of the control signal at every designated fixed time.
It has and.

By the initialization means 3, the control signal is recorded on the control track B of the video tape 2 and the cueing signal A is recorded on the video tape 2 at a designated fixed time interval, for example, every 5 minutes. Second
As shown in the figure, the video tape 2 is divided into a plurality of pages P1, P2 ... With the cue signal A as a boundary, and the video tape 2 is initialized in advance.

The operation unit 4 includes a key for setting a mode for initializing the video tape 2, a key for specifying a recording interval of a cue signal as a unit of page, a key for specifying a recording or reproducing mode, and a desired page. Equipped with a numeric keypad for specifying.

The recording / reproducing means 5 includes a control signal reproducing circuit 8 for reproducing a control signal from the initialized video tape 2, a cue signal detecting circuit 9 for detecting a cue signal,
The designated desired page is determined by counting the number of reproduced cue signals based on the designation of the desired page and the designation of the recording or reproduction mode by the operation unit 4, and only the desired page is determined. Recording / playback range determination means 10 for controlling to perform recording or playback, a servo circuit 11 for applying a drum servo and a capstan servo with the played back control signal as a reference signal, and a video signal and audio only for a desired page. The recording / reproducing circuit 12 is provided for recording a signal in synchronization with a control signal or reproducing only a video signal and an audio signal recorded on a desired page.

The operation of the video tape recorder 1 having the above configuration will be described.

First, the video tape 2 is initialized in advance. That is, the operation section 4 is used to specify the initialization mode and the recording interval of the cue signal in page units, for example, an interval of 5 minutes. As a result, the initialization unit 3 records the control signal while erasing the entire width of the video tape 2 and changes the duty of the control signal at intervals of 5 minutes to record the cueing signal. As a result, the video tape 2 is divided into a plurality of recording areas and is initialized by the cue signal.

Next, when recording an image on the initialized video tape 2, a desired page is designated by the operation unit 4 and a recording mode is designated.

In the recording / reproducing means 5, the video track of the video tape 2 is erased by the flying erase head, and the cue signal is detected based on the control signal reproduced while the audio track is erased by the audio erase head. When the signals are counted to reach a desired page portion, for example, video signals and audio signals from a video movie (not shown) are recorded in synchronization with the reproduced control signals, and the next cue signal is detected. Then, the recording is stopped. As a result, the video signal and the audio signal are recorded only on the designated page.

As described above, since it is necessary to reproduce the control signal during recording, a full width erasing head is not used unlike the conventional video tape recorder.

Further, when reproducing the image recorded on the video tape 2, the desired page to be reproduced is specified by the operation unit 4 and the reproduction mode is specified.

The recording / reproducing means 5 detects a cue signal based on the reproduced control signal, counts the cue signal, and when a desired page portion is reached, reproduces a video signal and an audio signal as in the conventional case. , When the next cue signal is detected, the reproduction is stopped. As a result, the video signal and audio signal of only the designated page are reproduced.

In this way, since recording or reproduction can be performed on the video tape 2 page by page, for example, in car sales,
Various necessary images are recorded on each page of the videotape, and the images of the necessary pages are played back to promote business negotiations,
Alternatively, as a video album, it is possible to support a wide range of applications such as recording images for each period on each page and reproducing the images of pages at a desired period.

<Effects of the Invention> As described above, according to the present invention, the initialization means records a control signal and a cue signal at regular time intervals on a video tape, divides it into a plurality of recording areas, and initializes the video tape in advance. By designating the desired recording area from the operation unit and designating the recording or reproducing mode, the recording / reproducing means records or reproduces the designated desired recording area as a unit. Therefore, the video tape can be recorded / reproduced in units of pages, which is a fixed recording area, and it can be applied to a wide range of uses of the video tape recorder.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a main part of an embodiment of the present invention, and FIG. 2 is a schematic diagram of a video tape. 1 ... Video tape recorder, 2 ... Video tape, 3
...... Initializing means, 4 ...... Operating section, 5 ...... Recording and reproducing means.

Claims (1)

[Claims] 1. A video signal is recorded on a video tape while erasing the video tape over its entire width, and at the same time, the duty of the control signal is changed to record a cueing signal. Initializing means for initializing the video tape by dividing the tape into a plurality of recording areas in advance, and designating a desired recording area of the plurality of recording areas of the initialized video tape, and recording or reproducing An operation section operated to specify a mode, and a video signal only in the desired recording area of the initialized video tape based on the specification by the operation section and the cue signal recorded on the video tape. And audio signals are recorded in synchronization with the control signals, or specified by the operation unit and recorded on a video tape. And a recording / reproducing means for reproducing only a video signal and an audio signal recorded in the desired recording area of the initialized video tape based on the read-out cue signal. Recorder.