JPS62172506A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent a counter character from being in dubbing in error by setting a counter character mix device inoperative when a budding switch is turned on, which is turned on in outputting a video signal to other VTR. CONSTITUTION:The count of a tape counter 3 converted into a video signal from a reproduced video signal 1 by a counter character generator 4 is inputted to a counter character mix device 5, when the dubbing switch 8 is turned on, a controller 7 gives a command so as not to operate device 5 and the signal 1 is used as the output video signal 2. On the other hand, when the switch 8 is turned off, the controller 7 gives a command to the device 5 in following to the counter character mix switch 6 and when the switch 6 is turned on, the device 5 is operated to bring the signal 2 into a signal of mixture between the signal 1 and the counter character, and when the switch 6 is turned off, the device 5 is not operated and the signal 1 is used as the signal 2. Thus, the counter character is not in dubbing together in error.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is capable of mixing a counter value with a signal recorded on a magnetic recording tape (hereinafter referred to as a reproduced video signal) and outputting the signal. The present invention relates to a magnetic recording/reproducing device (hereinafter referred to as a VTR).

(Prior Art) In recent years, VTRs have become cheaper, and in order to reduce the number of parts, some VTRs have been introduced that mix a counter value with a video signal and view the value on a monitor or the like.

FIG. 2 is a block diagram of a conventional VTR. In the figure, 1 is a reproduced video signal reproduced from a magnetic recording tape;
2 is a video signal (hereinafter referred to as output video signal) output from the output terminal of the VTR.

3 is a tape counter; 4 is a counter value character generator that converts the value of the tape counter 3 into a video signal; 5 is a counter that mixes the counter character converted into a video signal by the counter value character generator 4 into the reproduced video signal 1; It is a character mixing device, and 6 is a counter character mixing device [5 is ON1
This is a counter character mix switch with 0 FF F.

The reproduced video signal 1 and the value of the tape counter 3 converted into a video signal by the counter value character generator 4 are input to the counter character mixer 5.

Here, if the counter character mix switch 6 is ON, the counter characters are mixed into the reproduced video signal 1 to become the output video signal 2. Conversely, if the counter character mix switch 6 is OFF, the counter character is not mixed into the reproduced video signal 1 and becomes the output video signal 2 as it is.

(Problem to be Solved by the Invention) With the above configuration, if the counter character mix switch is turned on by mistake when dubbing a recorded tape onto another tape, the output video signal will not match the playback video signal. The signal had the counter characters mixed into it, and the counter characters were also dubbed together.

An object of the present invention is to provide a VTR that eliminates the drawbacks of the conventional technology and prevents the counter character mixing device from working by turning on the dubbing switch during dubbing recording, thereby preventing the counter characters from being accidentally recorded together with dubbing recording. It is to be.

(Means for Solving the Problems) The VTR of the present invention has a first switch that is turned on when recording a reproduced video signal on another magnetic recording tape using another VTR.
an external switch (hereinafter referred to as a dubbing switch), a tape counter, a counter character generator that converts the value of the tape counter into a video signal, and a reproduced video signal mixed with the counter character signal generated by the counter character generator. A second external switch (hereinafter referred to as a counter character mix switch) for setting the counter character mixing device to ON10 F F; A counter character mix control device that instructs the character mix device not to operate and, if the dubbing switch is OFF, instructs the counter character mix device to follow the ON/OFF command of the counter character mix switch. It is equipped with the following.

(Function) According to the present invention, with the above configuration, by turning on the dubbing switch during dubbing recording, the counter character mixing device is disabled, thereby preventing the counter characters from being erroneously recorded together with dubbing recording.

(Example) An embodiment of the present invention will be described based on FIG.

FIG. 1 is a block diagram of a VTR according to the present invention. In this figure, parts that are the same as those in the conventional example shown in FIG. 2 are designated by the same reference numerals, and their explanations will be omitted.

In FIG. 1, 7 is a counter character mix control device which, together with a counter character mix switch 6, determines whether or not to operate the counter character mix device 5. 8 is a dubbing switch, and when this is ON, the counter character mix control device 7 issues a command to disable the counter character mix device 5.

When the dubbing switch 8 is OFF, the counter character mix control device 7 issues a command to the counter character mix device 5 to follow the command of the counter character mix switch 6.

The operation of a VTR configured as follows will be explained.

The reproduced video signal 1 and the value of the tape counter 3 converted into a video signal by the counter value character generator 4 are input to the counter character mixer fi5.

Here, when the dubbing switch 8 is ON, the counter character mix control device 7 issues a command to the counter character mix device 5 not to operate, and at this time, regardless of the state of the counter character mix switch 6, the reproduced video signal 1 becomes the output video signal as is. If the dubbing switch 8 is OFF, the counter character mix control device 7 issues a command to the counter character mix device 5 to follow the counter character mix switch 6; at this time, if the counter character mix switch 6 is ON, the counter The character mix device 5 operates and the output video signal 2 becomes a signal obtained by mixing the counter characters with the reproduced video signal 1. If the counter character mix switch 6 is OFF, the counter character mix device 5 does not operate and the output video signal 2 becomes a signal obtained by mixing the counter characters with the reproduced video signal 1. 1 becomes the output video signal as is.

As described above, according to this embodiment, a dubbing switch is provided that is turned on when outputting a video signal for dubbing recording to another VTR, and when this dubbing switch is turned on, the counter character mixing device is always not operated. By doing so.

When dubbing to another VTR, it is possible to avoid accidentally dubbing the counter characters as well.

(Effect of the invention) According to the invention, when dubbing, the dubbing switch is turned on.
By doing this, the reproduced video signals become the reproduced video signals as they are, and therefore, it is possible to prevent the failure of accidentally dubbing the counter characters as well.

Its practical effects are great.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a VTR according to an embodiment of the present invention;
FIG. 2 is a block diagram of a conventional VTR. 1... Reproduction video signal, 2... Output video signal, 3.
...Tape counter, 4.Counter value character generator, 5.Counter character mix device, 6.
... Counter character mix switch, 7... Counter character mix control device, 8... Dubbing switch. Patent applicant: Matsushita Electric Industrial Co., Ltd. Agent Koji Hoshino 1st, 9th.
・′−J,−′! 7. + Figure 1 Nichiden Figure 2

Claims (1)

[Claims] Turns ON when recording signals recorded on a magnetic recording tape onto another magnetic recording tape using another magnetic recording/reproducing device.
a first external switch, a tape counter, a counter value character generator that converts the value of the tape counter into a video signal, and a first external switch that converts the value of the tape counter into a video signal; a counter character mixing device that mixes the counter character signals, a second external switch for turning the counter character mixing device ON/OFF; and if the first external switch is turned on, the counter character A command is issued to the mixer not to operate, and the first external switch is turned OFF.
If , the second external switch is ON/Off.
1. A magnetic recording and reproducing device comprising: a counter character mix control device that issues a command to a counter character mix device so as to follow the command F.