JPH0358370A - Video tape recorder - Google Patents

Abstract

PURPOSE:To perform recording and reproducing by regarding the fixed recording area of a tape as a unit by recording a program searching signal by an initializing means and dividing the tape into plural recording areas and performing the recording or the reproducing of desired area which is designated by an operation part. CONSTITUTION:The program searching signal of every fixed time which is designated by the operation part 4 is recorded and the tape 2 is divided into plural recording areas by the initializing means 3. In the case of recording on the tape 2, the program searching signal is counted by a recording and reproducing means 5 based on a repro duced control signal 8 by the designation of the operation part 4, and then, when the tape comes to the desired area part, a video and a sound signal are recorded and then, when the succeeding program searching signal is detected, the recording is stopped. And also, when the reproducing is designated by the operation part 4, the video and the sound signal are reproduced by the means 5 when the tape comes to the desired area part based on the program searching signal, and the reproducing is stopped when the succeeding program searching signal is detected. Thus, the record ing and the reproducing can be performed by regarding the desired recording area as the unit.

Description

[Detailed description of the invention] Industrial application fields> The present invention relates to video tape recorders.

<Prior Art> In recent years, in order to enable video tape recorders to be used for a wide range of purposes, video tapes are divided into multiple recording areas corresponding to a fixed recording time, and recording and playback are performed using these recording areas as units. It is desirable to be able to do so.

In other words, in car sales, for example, various images necessary for sales, such as images of the exterior of the car, images of the interior of the car, images of performance and price lists, etc., are recorded on videotape in 5-minute increments. You can then play back a desired video part to proceed with business negotiations, or you can record video from a certain period in, say, 5 minute increments as a video album, and then play back the video from a desired period. There are possible cases.

Problems to be Solved by the Invention> However, none of the conventional video tape recorders was equipped with 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 videotape recorder that can divide a videotape into a plurality of recording areas and perform recording and playback using these recording areas as units. .

Means for Solving the Problems> In order to achieve the above object, the present invention records a control signal on a videotape while erasing the entire width of the videotape, and erases the control signal at regular intervals. initializing means for initializing the videotape by dividing the video tape in advance into a plurality of recording areas by recording a cue signal by changing the decoding of the signal; an operating section operated to specify a desired recording area among the recording areas and specifying a recording or playback mode, and based on the specification by the operating section and the cue signal recorded on the video tape, A video signal and an audio signal are recorded only in the desired recording area of the initialized videotape in synchronization with the control signal, or according to the cue signal designated by the operation unit and recorded on the videotape. Based on this, the recording/reproducing means is provided for reproducing only the video signal and audio signal recorded in the desired recording area of the initialized videotape.

According to the above structure, the control signal and the cue signal at fixed time intervals are recorded on the videotape in advance by the initialization means and divided into a plurality of recording areas, and the desired recording area can be selected from the operation unit. By specifying the recording or playback mode as well as the recording/playback mode, the recording/playback means records or plays the specified desired recording area as a unit. This means that it can be recorded and played back.

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

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

The videotape recorder l of this embodiment records the videotape 2 in a plurality of recording areas (hereinafter referred to as
This recording area is divided into pages (referred to as "pages"), and is configured as follows so that recording and reproduction can be performed in units of pages.

That is, the videotape recorder 1 of this embodiment records a control signal onto the videotape 2 over the entire width of the videotape 2, and changes the duty of the control signal at regular intervals. By recording a cue signal using the videotape 2,
an initializing means 3 for initializing the video tape 2 by dividing the video tape 2 into a plurality of pages, which are recording areas, in advance; Based on the operator 4 operated to designate the playback mode, the designation by the operator 4, and the cue signal recorded on the videotape 2, only the desired page of the initialized videotape 2 is displayed. , record the video signal and the audio signal in synchronization with the control signal, or select a desired base of the initialized videotape 2 based on the designation by the operation unit 4 and the cue signal recorded on the videotape 2. Recording and reproducing means 5 for reproducing only the video signal and audio signal recorded in
It is equipped with

The initializing means 3 erases the entire width of the videotape 2 with a full-width erasing head when the mode for initialization and the recording interval of the cue signal in units of pages are specified by the operation unit 4. a circuit 6, and a control signal and cue signal recording circuit 7 that records the control signal and records it as a cue signal by changing the duty of the control signal at specified fixed time intervals.
It is equipped with

The initialization means 3 records a control signal on the control track B of the video tape 2, and also records a cue signal A on the video tape 2 at specified fixed time intervals, for example, every 5 minutes. , second
As shown in the figure, the video tape 2 is initialized in advance by dividing the video tape 2 into a plurality of tapes PI P2 . . . using the cue signal A as a boundary.

The operation unit 4 includes keys for setting a mode for initializing the videotape 2, keys for specifying the recording interval of cue signals serving as page units, keys for specifying a recording or playback mode, and a key for specifying a desired base. It is equipped with a numeric keypad for specifying numbers.

The recording/reproducing means 5 includes a control signal reproducing circuit 8 for reproducing control signals from the initialized videotape 2, a cueing signal detection circuit 9 for detecting cueing signals, and a cueing signal detection circuit 9 for detecting cueing signals, and a cueing signal detecting circuit 9 for detecting cueing signals, and a cueing signal detecting circuit 9 for detecting cueing signals. Based on the designation and the recording or playback mode designation, the specified desired page is determined by counting the number of played cue signals, and control is performed so that only the desired page is recorded or played back. A servo circuit l1 that applies the drum servo and cabstan servo using the reproduced control signal as a reference signal, and a servo circuit l1 that synchronizes the video signal and audio signal with the control signal only for desired pages. The recording/reproducing circuit 12 records or reproduces only the video signal and audio signal recorded on a desired page.

The operation of the video tape recorder 1 having the above structure will be explained.

First, the videotape 2 is initialized in advance. That is, in operation gII4, the initialization mode is specified, and the recording interval of cue signals in page units, for example, 5 minute intervals, is specified. As a result, the initializing means 3 records the control signal while erasing it over the entire width of the videotape 2, and records the cue signal by changing the decoating of the control signal at 5-minute intervals. by this,
The videotape 2 is initialized by being divided into a plurality of pages, which are a plurality of recording areas, in response to a cue signal.

Next, when recording a video onto the initialized videotape 2, the operator 4 specifies a desired page and also specifies a recording mode.

The recording/reproducing means 5 erases the video track of the video tape 2 with a flying erase head, and detects a cue signal based on the control signal played back while erasing the audio track with the audio erase head. When the start signal is counted and a desired page portion is reached, the video signal and audio signal from, for example, a video movie (not shown) are recorded in synchronization with the reproduced control signal, and the next start signal is recorded. When detected, recording will stop. As a result, the video signal and audio signal are recorded only on the designated page.

Since it is necessary to reproduce the control signal during recording, a full-width erasing head is not used as in conventional tape recorders.

Further, when reproducing the video recorded on the videotape 2, a desired page to be reproduced is specified using the operation unit 4, and a reproduction mode is also specified.

The recording/reproducing means 5 detects a cue signal based on the reproduced control signal, counts the cue signal, and when a desired peno portion is reached, reproduces the video signal and the audio signal in the same way as before. , when the next cue signal is detected, the playback is stopped.

As a result, only the video signal and audio signal of the specified unit will be reproduced.

In this way, it is possible to record or play back page by page on the videotape 2, so for example, in car sales, etc.
Record various necessary images on each page of videotape.j2
You can then play back the necessary videos of Peno to proceed with business negotiations, or record videos from each period on each page as a video album and play back all the videos from the desired period. This means that it can be used in a wide range of applications.

<Effects of the Invention> As described above, according to the present invention, the initialization means records a control signal and a cue signal at fixed time intervals on a videotape, and divides the videotape into a plurality of recording areas to initialize the videotape in advance. By specifying the desired recording area and the recording or playback mode from the operation section, the recording and playback means will perform recording or playback using the specified desired recording area as a unit. Therefore, the video tape can be recorded and played back in units of pages, which are fixed recording areas, and the video tape recorder can be used in a wide range of applications.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of essential parts of an embodiment of the present invention, and FIG. 2 is a schematic diagram of a videotape. ■...Video tape recorder, 2...Video tape, 3...Initializing means, 4...Operation unit, 5...Recording and reproducing means.

Claims (1)

[Claims] (1) recording a control signal on the videotape while erasing the entire width of the videotape;
initializing means for initializing the videotape by dividing the videotape into a plurality of recording areas in advance by changing the duty of the control signal at regular intervals and recording a cue signal; and an initialized video tape. an operating section operated to specify a desired recording area among the plurality of recording areas of the tape and specifying a recording or playback mode; Based on the output signal, the video signal and the audio signal are recorded only in the desired recording area of the initialized videotape in synchronization with the control signal, or the video signal and the audio signal are recorded on the videotape as specified by the operation section. a video tape recorder comprising: recording and reproducing means for reproducing only the video signal and audio signal recorded in the desired recording area of the initialized videotape based on the cueing signal; .