JPH07288786A - Video signal recording device, video signal recording and reproducing device, and video signal display device - Google Patents

Abstract

PURPOSE:To provide a recording medium where the video signal where a dis crimination signal indicating untransmittable video additional information is rewritten is recorded. CONSTITUTION:A video signal recording device records a PALplus signal aa in a recording medium TT, and this signal aa consists of a main signal having prescribed video information, a helper signal having plural kinds of video additional information which improve the quality of the main signal, and the discrimination signal which specifies the classification of video additional information. This video signal recording device is provided with a control signal generating means 6 which specifies the classification of video additional information improperly recorded by this device to generate a control signal 6a, a '0' bit generating means 5 and a first selecting means 7 which rewrites the discrimination signal. with '0' based on the control signal 6a, and a recording means 8 which records the output signal of the first selecting means on the recording medium TT.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording device, a video signal recording / reproducing device and a video signal display device.

[0002]

2. Description of the Related Art EDTV (Extended Def) has compatibility with the current broadcasting system and improves the shortcomings of the current system.
There are inition TV and high resolution TV). And as one of these technologies, PAL (Phase Alternation by Lin
e) Wide screen (16:
The so-called "PA
There is an “Lplus” method.

Although PALplus has introduced a wide screen display, it is the current broadcasting system of the PAL broadcasting system T.
This is made available for viewing on a V receiver (hereinafter referred to as a current TV receiver), and for this reason, here, there are no images a2 and a3 above and below the current screen a1 obtained by reducing the widescreen original image. Is used to generate a widescreen original image a (illustrated in FIG. 4A). However, the original image a, which has been converted to a wide screen by the letterbox method, has the current T ratio of 4: 3.
When the image is received by the V receiver, the same image b (Fig.
(Shown in (B)), a wide-screen image c (shown in FIG. 4C) with degraded vertical resolution is obtained when the image is received by a current TV receiver having an aspect ratio of 16: 9.

While PALplus looks similar to current TV receivers, PALplus-capable TV receivers (aspect ratio 16: 9) produce such vertical resolution when receiving images from current TV receivers with an aspect ratio of 16: 9. Based on the above-mentioned letterbox method, an auxiliary signal (hereinafter referred to as an auxiliary signal) for improving the definition of the main signal which is the widescreen image a1 is formed in the non-image parts a2 and a3 at the top and bottom of the screen. , Helper signal) is superimposed on the encoded video signal.

Further, an identification signal is inserted in a predetermined line in order to specify the kind and aspect ratio of the helper signal on the receiving side. This identification signal is, for example, a 14-bit signal inserted in the first half of 23 lines of the first field of the video signal, and the first 4 bits have an aspect ratio (16: 9, 14: 9, 4: 3). ) And a signal format (discrimination between full format and letterbox), 1 bit following this indicates a video signal source (discrimination between camera mode and film mode), and 3 following this.
A bit represents a function of improving image quality, for example, represents information related to subtitles, and further, the following 3 bits are spare bits for ensuring expandability.

One bit of this identification signal is 1200 nsec (= 833 KHz) as shown in FIG.
One bit is composed of 6 clock cycles of 00 nsec. Then, "0" indicating no signal rises from a low level to a high level as shown in the figure, and conversely, "1" indicating a signal falls from a high level to a low level as shown in the figure. Is. That is, the transmission is by biphase modulation.

[0007]

Here, it is assumed that a video signal recording / reproducing apparatus records the video signal when the identification signal indicates that there is caption information. Since the band of the teletext signal related to the caption information is approximately 3.5 MHz, it exceeds the transmission band (approximately 3 MHz) of the home VTR. Therefore, if this teletext signal is recorded / reproduced by a home VTR, the characteristics will deteriorate. On the other hand, the maximum frequency of the identification signal is 833.
Since it is KHz, it can be sufficiently transmitted even by a home VTR.

Therefore, when the reproduced video signal is supplied to the TV receiver, the deteriorated teletext signal is decoded based on the content of the identification signal, which causes interference on the screen and the operator considers it to be a failure. There is also.

Therefore, the present invention aims to solve the above problems.

[0010]

The present invention provides the following configurations in order to solve the above problems.

A first invention comprises a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording device for recording an input video signal on a recording medium, the control signal generating means for generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording device; Rewriting means for rewriting based on the control signal so as to invalidate a part or all of the identification signal in the input video signal composed of the main signal, the auxiliary signal, and the identification signal, and the rewriting And a recording means for recording the output signal of the means on the recording medium.

A second aspect of the invention is to insert a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and a predetermined line to determine the type of the video additional information. A video signal recording device for recording an input video signal having an identification signal having a plurality of specifying bits on a recording medium, the line detection detecting a line in which the identification signal is inserted based on the input video signal. Means, a control signal generating means for generating a control signal by specifying a bit in the identification signal indicating a type of video additional information which is not appropriate to be recorded by the video signal recording device, and detected by the line detecting means. And a bit position detecting means for detecting the bit position in the line based on the control signal, and invalidating the identification signal only at the bit position detected by the bit position detecting means. And rewriting means for rewriting starts selling input video signal, the output signal of the rewriting means is to provide a video signal recording apparatus, comprising a recording means for recording on the recording medium.

A third invention comprises a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording / reproducing apparatus for recording / reproducing an input video signal to / from a recording medium, the control signal generating means generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording apparatus. A rewriting means for rewriting at least a part or all of the identification signal based on the control signal, a recording means for recording the output signal of the rewriting means on the recording medium, and the recording medium. The present invention provides a video signal recording / reproducing device having a reproducing means for reproducing a reproduced video signal.

A fourth invention comprises a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for improving the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording / reproducing apparatus for recording / reproducing an input video signal to / from a recording medium, the control signal generating means generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording apparatus. A rewriting means for rewriting at least a part or all of the identification signal based on the control signal, a recording means for recording the output signal of the rewriting means on the recording medium, and the recording medium. A video signal comprising: a reproducing means for reproducing the reproduced video signal; and a selecting means for selectively outputting the input video signal when the operation is stopped and at least the reproduced video signal when reproducing. There is provided a recording and reproducing apparatus.

A fifth invention comprises a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording / reproducing apparatus for recording / reproducing an input video signal to / from a recording medium, the control signal generating means generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording apparatus. Rewriting means for rewriting based on the control signal so as to invalidate a part or all of the identification signal in the input video signal composed of the main signal, the auxiliary signal, and the identification signal, Recording means for recording the output signal of the rewriting means on the recording medium;
A reproducing means for reproducing a reproduced video signal from the recording medium; and a selecting means for selectively outputting the input video signal when the operation is stopped, the reproduced video signal when reproducing, and the output signal of the rewriting means when recording. And a video signal recording / reproducing apparatus characterized by the above.

The sixth invention comprises a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal display device for switching and outputting an input video signal based on a detection result of the identification signal, performing a predetermined signal processing on the output signal, and displaying the signal, wherein the identification signal is detected from the input video signal. By
Switching means for switching the display area for displaying each video signal having a different effective display screen area depending on the type of the input video signal in a predetermined effective display screen area;
A switching control means for generating a switching control signal based on the identification signal, a mute signal generating means for generating a video mute signal for apparently invalidating the input video signal, and a switching control signal from the switching control means It is an object of the present invention to provide a video signal display device having a switching output means for switching and outputting an input video signal and the mute signal.

[0017]

1 is a block diagram of an embodiment of a video signal recording / reproducing apparatus according to the present invention, FIGS. 2 and 3 are timing charts for explaining FIG. 1, and FIG. 6 is a video signal recording according to the present invention. 8 is a block diagram of another embodiment of the reproducing apparatus, FIG. 7 is a block diagram of one embodiment of the video signal display apparatus according to the present invention, FIG.
6 is a timing chart for explaining the switching operation of the video signal display device. Embodiments will be described below with reference to the drawings. The gist of the present embodiment is to identify a signal component that is not suitable for transmission in a video signal recording / reproducing apparatus, and to identify information of an identification signal corresponding to this signal component as a signal component " After rewriting the identification signal so as to invalidate the information to represent "none",
It is recorded on a recording medium.

In FIG. 1, a PALplus signal aa (shown in FIG. 2A) supplied from a transmission line (not shown) is
It is supplied to the synchronization signal detecting means 1 and the field detecting means 2. The synchronizing signal detecting means 1 detects the horizontal synchronizing signal 1a, which is detected by the "0" bit generating means 5 and the line detecting means 3.
And supply to. The field detecting means 2 detects the type of the first field or the second field, and identifies the field (first field) in which the identification signal is inserted and outputs the output signal (shown in FIG. 2B). Line detection means 3
Is being supplied to. Then, the line detecting means 3 counts the horizontal synchronizing signal 1a from the start of the first field and specifies the line (23 lines) in which the identification signal is inserted, and is obtained as an output signal (shown in FIG. 2C). ) Is supplied to the bit position detecting means 4.

Now, the bit position detecting means 4 will be described in detail with reference to FIG. 3. FIG. 3A shows an identification signal, and FIG. 3B shows an output signal of the line detecting means 3. is there. Then, the bit position detecting means 4 detects the bit position obtained by counting the number of clock signals synchronized with the identification signal shown in FIG. 6D from the rising edge of the output signal by the number specified based on the control signal 6a. The signal 4a is generated and supplied to the "0" bit generating means 5. The bit position detection signal 4a thus obtained represents the bit position to be rewritten in the identification signal.

This control signal 6a is generated by the control signal generating means 6 and has bits representing a signal component which is not suitable for recording or recording / reproducing due to various characteristics such as transmission band, jitter characteristic, frequency characteristic of the video signal recording / reproducing apparatus. Have been identified. However, in consideration of the high-frequency characteristics of the recording medium, recording or recording / reproducing may be possible depending on the type of recording medium and the recording / reproducing method. A discrimination hole is provided to generate the control signal 6a based on the detection result. If the characteristics of the video signal recording / reproducing apparatus do not change, specifically, if a plurality of recording media and recording / reproducing systems are not supported, a predetermined control signal 6a is generated.

In FIG. 1, the "0" bit generating means 5 generates a "0" bit only at the bit position in order to invalidate the bit specified by the bit position detection signal 4a. The replacement signal 5a is supplied to the terminal b of the first selecting means.

PALpl is connected to the terminal a of the first selecting means 7.
The us signal aa is supplied, and selection is performed by the bit position detection signal 4a. That is, the identification signal in the PALplus signal aa is rewritten using the rewrite signal 5a supplied to the terminal b only during the high level period when the bit position detection signal 4a is valid, and the output signal shown in FIG. Is obtained and supplied to the recording means 8.

The recording means 8 records a signal obtained by performing well-known recording processing such as emphasis and FM modulation on the recording medium TT via the head H. Since the identification signal of the recording medium TT thus obtained is rewritten,
Even if the recording medium TT is reproduced by another reproducing apparatus and supplied to the TV receiver, there is an advantage that no interference occurs.

The signal reproduced from the recording medium TT via the head H is subjected to well-known reproducing processing such as FM demodulation and de-emphasis by the reproducing means 9 having a complementary relationship with the recording means 8 to reproduce a reproduced image. The signal 9a is supplied to the terminal b of the second selecting means 10.

The second selecting means 10 switches the reproduction output and the EE output at the time of recording, and the PALplus supplied to the terminal a at the time of recording and at the time of operation stop (hereinafter referred to as "EE time"). The signal aa is selected, while the reproduced video signal 9a is selected during reproduction. Here, the reason why the PALplus signal aa is selected and the rewritten signal is not selected at the time of EE is that in such a case, the PALplus signal aa whose characteristics are not deteriorated is supplied to the TV receiver to obtain a high quality image. Because you can. Incidentally, as shown in FIG. 6, the second selection means 10 is replaced with a switch having three inputs and one output, and the PALplus signal aa is used at the time of recording.
Alternatively, the reproduction video signal 9a may be selected during reproduction, and the output signal of the first selection means 7 may be selected during operation stop. In such a case, the signal itself currently being recorded is supplied to the TV receiver. Therefore, for example, even if a video with subtitles is displayed, there is no subtitle when the recorded recording medium is reproduced. Alternatively, it is possible to eliminate the inconvenience that an error occurs.

The recording medium in the above-mentioned embodiment is a VT.
In addition to the magnetic tape used in R, it goes without saying that it may be an information storage medium such as a magnetic disk, an optical disk or a semiconductor memory.

By the way, for example, the above-mentioned PALplus
When receiving s and the current PAL broadcasting system by a TV receiver compatible with this PALplus, the TV receiver uses the 14-bit signal content inserted in the 23rd line of the first field of the received video signal. It is detected that the received video signal is PALplus or current PAL broadcast, and when this video signal is PALplus, the aspect ratio is 16: 9, the signal format is full format,
In the current PAL broadcasting system, the aspect ratio is 4: 3, the signal format is letterbox, and predetermined signal processing is performed respectively, and the optimal state is displayed on the display means such as the CRT of the TV receiver.

At this time, in the PALplus-compatible TV receiver described above, for example, when the video signal is switched to watch PALplus from the current PAL broadcast by changing the channel being watched, on the CRT of the TV receiver. Since the signal format such as the aspect ratio of the video signal displayed on the screen abruptly changes, the voltage applied to the deflection coil forming the CRT abruptly changes accordingly. Therefore, the display screen of the CRT is disturbed, which is unsightly and visually disturbs the viewer until the image becomes stable.

In particular, in the above PALplus-compatible TV receiver, when the video signal is switched, the signal format such as the aspect ratio of the video signal is automatically switched. This CR
Since it is impossible to predict the disturbance on the display screen of T,
There is a problem in that the usability is not good, such as misunderstanding such a disorder on the display screen as a failure.

Therefore, a video signal display device according to the present invention which solves the above problems will be described below. As shown in FIG. 7, the present video signal display device has the above-described input video signal a.
A clamp circuit 21 that clamps the DC component of a to a predetermined level, a clip circuit (mute signal generation means) 22 that cuts the luminance signal component of the video signal output from the clamp circuit 21 and outputs a video mute signal, and a clamp circuit 21. Switching output means 23 for switching and outputting the video signal output from the clip circuit 22 and the video mute signal output from the clip circuit 22 by a switching control signal described later, respectively.
The video signal processing circuit 2 which performs predetermined signal processing on the signal output from the switching output means 23 and supplies the signal to the CRT 26.
4. The identification signal detecting means 27 for detecting the identification signal inserted in the line of the predetermined field of the input video signal aa, and the switching control signal based on the change of the identification signal detected by the identification signal detecting means 27. The switching control means 28 for supplying to the switching output means 23, the adjusting means 29 for generating the adjusting signal so as to display the video signal at a predetermined aspect ratio based on the change of the identifying signal detected by the identifying signal detecting means 27, the adjusting means. The coil voltage control unit 30 controls the voltage applied to the deflection coils 25A and 25B of the CRT based on the adjustment signal output from the control unit 29.

The above-mentioned input video signal aa is, for example, a PALplus signal supplied to the above-mentioned video signal recording device and video signal recording / reproducing device, and is currently used when the receiving channel is switched in the video signal receiving device (not shown). The PAL broadcast signal is received, and this is used as the input video signal aa by the clamp circuit 21 and the identification signal detecting means 27.
Is supplied to. First, the input video signal aa is the current PA.
A case where the L broadcast signal is switched to the PALplus signal will be described as an example.

The input video signal aa is supplied to the clamp circuit 21 and the identification signal detection means 27, the DC component of the input video signal aa is clamped to a predetermined level in the clamp circuit 21, and the first input terminal 01 of the switching output means 23 is supplied. And to the clip circuit 22. Clip circuit 22
Cuts the luminance signal component of the supplied clamp video signal to generate a video mute signal which is apparently a black video, and switches it to the second input terminal 02 of the switching output means 23.
Supply to. At this time, since the synchronizing signal of the video signal is maintained, there is no influence on the synchronization of the video signal during reproduction.

As shown in FIG. 8, the identification signal detecting means 27
Identifies the type of the input video signal aa by detecting the identification signal inserted in the predetermined field of the input video signal aa as described above. Therefore, this input video signal aa is different from the current PAL broadcast signal. Upon switching to the PALplus signal (shown in FIG. 8A), based on this, for example, the detection signal switched from "0" to "1" is supplied to the switching control means 28 and the adjusting means 29.

The switching control means 28 supplies a switching control signal (shown in FIG. 8B) to the above-mentioned switching output means 23 by the switching of the detection signal. For example, this switching control signal is "1" at the timing when the current PAL broadcast signal is switched to the PALplus signal.
Signal is output and this output is held for a predetermined period. The predetermined period is set, for example, as an arbitrary period until the video signal disturbed by the switching of the video signal becomes stable. During this period, the video mute signal supplied to the second input terminal 02 of the switching output means 23 is output by the switching control signal.

Here, for example, the clip circuit 22 is
Of course, it is also possible to mute the disturbance on the screen during a predetermined period by cutting the luminance signal component at the timing when the identification signal detecting means 27 detects the identification signal.

The video signal output from the switching output means 23 is supplied to the video signal processing circuit 24, and the CRT 26
Predetermined signal processing for displaying at is performed.
On the other hand, the detection signal output from the identification signal detection means 27 is supplied to the adjustment means 29, and the coil voltage control means 30 is controlled based on the detection signal switched from "0" to "1". Generates and outputs a control signal.

In the coil voltage control means 30, for example, a predetermined coil voltage for displaying the video signal displayed on the CRT 26 in an optimum aspect ratio is set according to the signal format of the input video signal aa. , The deflection coil 25 according to the adjusting signal supplied from the adjusting means 29 described above.
The voltage applied to A and 25B is switched, and the aspect ratio of the video signal display of the CRT 26 is switched from 4: 3 to 16: 9.

At this time, the voltage applied to the deflection coils 25A and 25B changes abruptly, but the video mute signal with the luminance signal cut is supplied from the switching output means 23 to the CRT 26. The displayed image is apparently a black image, and the above-mentioned image distortion is not displayed. Further, as described above, the display of the input video signal aa is switched after the video mute signal is displayed for a predetermined period, so that it is possible to prevent the visual interference of the viewer.

On the contrary, from the PALplus signal to the current P
Needless to say, it is possible to further improve the usability for the viewer by displaying the video mute signal when switching to the AL broadcast signal.

In the present video signal display device, the video mute signal is generated by cutting the luminance signal of the input video signal aa. However, the video mute signal is not limited to this, and for example, a stored still image or character can be stored. It goes without saying that a single color screen (gray, blue) for information or the like or a color that apparently does not show the disturbance of the image may be used.

Although it has been described that the present video signal display device does not display the image disturbance apparently when the video signals of different signal formats are switched, for example, the video mute signal generated in a particularly bad reception state of the video signal. Of course, it may be configured to output and display.

Although the PALplus signal has been described as an example of the input video signal in the above-mentioned embodiments, the present invention is not limited to this, and a main signal having predetermined video information and the main signal of the main signal. Of course, any input video signal may be used as long as it is an input video signal including an auxiliary signal having a plurality of types of video additional information for improving quality and an identification signal for specifying the type of video additional information.

[0043]

As described above, according to the configuration of the present invention according to claim 1, particularly, a part of the identification signal in the input video signal composed of the main signal, the auxiliary signal and the identification signal. Or, since it has a rewriting means for rewriting based on a control signal so as to invalidate all, it is possible to obtain a reproduced video signal without interference on the screen when the recording medium recorded by this video signal recording device is reproduced. That is, there is an effect that the configuration for deleting the auxiliary signal itself can be eliminated and the configuration can be simplified.

Further, as described above, according to the configuration of the present invention according to claim 2, in addition to the effect of the present invention according to claim 1, in particular, by the line detecting means, the bit position detecting means, and the bit position detecting means. Since it has a rewriting means for rewriting the input video signal so as to invalidate the identification signal only at the detected bit position, the identification signal consisting of a plurality of bits inserted in a predetermined line to specify the type of video additional information. There is the effect that only the desired bits in it can be reliably invalidated.

Further, as described above, according to the configuration of the present invention according to claim 3, in addition to the effect of the present invention according to claim 1, in particular, there is a reproducing means for reproducing a reproduced video signal from the recording medium. There is an effect that it is possible to output a reproduced video signal without interference on the screen.

According to the configuration of the present invention according to claim 4 as described above, in addition to the effect of the present invention according to claim 3, in particular, at least the input video signal at the time of recording and at least the reproduction video signal at the time of reproduction are provided. Since the input means outputs the input video signal before the identification signal is rewritten when the operation is stopped, since the selection means for selectively outputting is provided, the high quality including the auxiliary signal which is not suitable for the video signal recording / reproducing apparatus in the TV receiver to record / reproduce. There is an effect that the image of can be obtained.

Further, as described above, according to the configuration of the present invention according to claim 5, in addition to the effect of the present invention according to claim 4, in particular, when the operation is stopped, the input video signal is reproduced, and when the reproduction is performed, the reproduced video signal is reproduced. With the selection means for selectively outputting the output signal of the rewriting means at the time of recording, there is an effect that the contents of the video signal currently recorded at the time of recording can be accurately confirmed.

Further, as described above, according to the configuration of the present invention according to claim 6, in the input video signal having the main signal, the auxiliary signal and the identification signal, the signal format is different particularly by the simple configuration. By displaying the video mute signal, the disturbance on the screen caused by the switching of the input video signal can be apparently eliminated, so that the usability for the viewer can be improved. There is.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a video signal recording / reproducing apparatus according to the present invention.

FIG. 2 is a timing chart for explaining FIG.

FIG. 3 is a timing chart for explaining FIG.

FIG. 4 is a conceptual diagram for explaining a PALplus signal.

FIG. 5 is a waveform diagram for explaining one bit of an identification signal.

FIG. 6 is a block diagram of another embodiment of the video signal recording / reproducing apparatus according to the present invention.

FIG. 7 is a block diagram of an embodiment of a video signal display device according to the present invention.

FIG. 8 is a timing chart for explaining a switching operation of the video signal display device.

[Explanation of symbols]

 3 line detecting means 4 bit position detecting means 6 control signal generating means 7 first selecting means (rewriting means) 8 recording means 9 reproducing means 10 second selecting means (selecting means) 6a control signal 9a reproduced video signal aa PALplus Signal (input video signal) TT recording medium

Claims (6)

[Claims] 1. An input video signal comprising a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording device for recording on a recording medium, the control signal generating means for generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording device; Rewriting means for rewriting based on the control signal so as to invalidate a part or all of the identification signal in the input video signal composed of an auxiliary signal and the identification signal, and an output signal of the rewriting means And a recording means for recording the image on the recording medium. 2. A main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and a plurality of bits inserted in a predetermined line to specify the type of the video additional information. A video signal recording device for recording an input video signal having an identification signal, which is formed on a recording medium, and line detection means for detecting a line in which the identification signal is inserted based on the input video signal; Control signal generating means for generating a control signal by specifying a bit in the identification signal indicating a type of video additional information that is not appropriate to be recorded by the video signal recording device; and a control signal generating means for detecting a line in the line detected by the line detecting means. Bit position detecting means for detecting the bit position based on the control signal, and the input image for invalidating the identification signal only at the bit position detected by the bit position detecting means. A video signal recording apparatus comprising: a rewriting unit that rewrites an image signal; and a recording unit that records an output signal of the rewriting unit on the recording medium. 3. An input video signal comprising a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording / reproducing apparatus for recording / reproducing on / from a recording medium, the control signal generating means for generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording apparatus, and the control signal. Rewriting means for rewriting so that at least a part or all of the identification signal is invalidated based on the above, recording means for recording the output signal of the rewriting means on the recording medium, and a reproduced video signal from the recording medium. A video signal recording / reproducing apparatus having a reproducing means for reproducing. 4. An input video signal comprising a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording / reproducing apparatus for recording / reproducing on / from a recording medium, the control signal generating means for generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording apparatus, and the control signal. Rewriting means for rewriting so that at least a part or all of the identification signal is invalidated based on the above, recording means for recording the output signal of the rewriting means on the recording medium, and a reproduced video signal from the recording medium. A video signal recording / reproducing apparatus characterized by having a reproducing means for reproducing and an input means for selectively outputting the input video signal when the operation is stopped and at least the reproduced video signal when reproducing. . 5. An input video signal comprising a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal recording / reproducing apparatus for recording / reproducing on / from a recording medium, the control signal generating means for generating a control signal by specifying a type of video additional information which is not appropriate to be recorded by the video signal recording apparatus; And a rewriting means for rewriting based on the control signal so as to invalidate a part or all of the identification signal in the input video signal composed of the auxiliary signal and the identification signal, and a rewriting means of the rewriting means. Recording means for recording the output signal on the recording medium, reproducing means for reproducing the reproduced video signal from the recording medium, the input video signal at the time of operation stop, the reproduced video signal at the time of reproduction, and the rewriting at the time of recording Video signal recording and reproducing apparatus characterized by having a selection means for selecting an output signal of the unit. 6. An input video signal comprising a main signal having predetermined video information, an auxiliary signal having a plurality of types of video additional information for enhancing the quality of the main signal, and an identification signal for specifying the type of the video additional information. A video signal display device for switching and outputting based on a detection result of the identification signal, performing a predetermined signal processing on the output signal and displaying the signal, wherein the identification signal is detected from the input video signal, Switching means for switching the display area for displaying each video signal having an effective display screen area different depending on the type of the input video signal in a predetermined effective display screen area, and generating a switching control signal based on the identification signal. Switching control means, mute signal generation means for generating a video mute signal that apparently invalidates the input video signal, and switching from the switching control means A video signal display device comprising a switching output means for switching and outputting the input video signal and the mute signal according to a control signal.