JPH06181565A - Video signal recording and reproducing device - Google Patents

Abstract

PURPOSE:To make it possible to observe a display screen so that the generation of a non-display part can be reduced as small as possible by judging the video contents of a reproduced signal and automatically switching a video signal synthesizing method by a wide screen monitor and a normal screen monitor. CONSTITUTION:A video signal outputted from a video signal processing circuit 5 and a signal outputted from PCM still picture processing circuit 6 are inputted to a compressed synthetic signal preparing circuit 7 through input terminals 9, 10. On the other hand, PCM still picture judging circuit 70 judges the existence of PCM still picture recording and the sort of the video signal and outputs the judged results to a display mode control circuit 72. A video mode judging circuit 71 judges the sort of a video from a change or the like in the luminance level of the video signal and outputs the judged result to the circuit 72. The circuit 72 controls horizontal and vertical compression circuits included in the circuit 7 based upon the judged results outputted from the circuits 70, 71, changes the picture angle of the video signal and synthesizes a dynamic picture and the PCM still picture. Consequently a dynamic picture from the VTR and a PCM still picture can be observed on the monitor screen without mutually superposing them.

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 / reproducing apparatus, and more particularly to a video signal recording / reproducing apparatus having means for reproducing still images and moving images.

[0002]

2. Description of the Related Art In a camera-integrated VTR,
Video is recorded and played. By the way, there are some that can be recorded and reproduced even when a video taken by a video camera is used as a still image.

As an example, in 8 mm video,
After converting the video signal of the still image to digital data, PCM
Examples thereof include those described in Japanese Patent Laid-Open No. 1-202078 in which recording / reproduction is performed on a PCM audio track instead of audio data.

This will be described with reference to FIGS. 11, 12 and 13.

FIG. 11 is a schematic block diagram showing a video signal reproducing system for 8 mm video, where 1 is a magnetic tape and 2, 3
Is a magnetic head, 4 is a reproduction control circuit, 5 is a video signal processing circuit, 6 is a PCM still image processing circuit, 19 is a built-in image creating circuit, 20 is a switch, 21 is an output terminal, and 21 is an input terminal.

FIG. 12 is a diagram schematically showing a recording pattern of a signal recorded on the magnetic tape 1 of 8 mm video, and 23 is a signal of one track recorded by the magnetic head in one trace at the time of recording. Is. Of these, 24 is a video signal recording area, 25 is a PCM audio signal recording area, and 26 is a recording area.
Is a recording area in which an information signal such as an ID signal for track identification is recorded. Generally, in a video signal magnetic recording / reproducing apparatus using a magnetic tape as a recording medium, a plurality of rotating magnetic heads are switched to record or reproduce a signal. Therefore, as shown in FIG.
PCM audio signal recording area 25 and I on the extension line of
If the recording area 26 for the D signal and the like is located, it is possible to simultaneously reproduce the PCM audio signal and the ID signal while reproducing the video signal.

In FIG. 11, the magnetic heads 2 and 3 convert the signals recorded on the magnetic tape 1 into electric signals and supply them to the reproduction control circuit 4. The reproduction control circuit 4 supplies the video signal to the video signal processing circuit 5 while switching the reproduction signals from the magnetic heads 2 and 3, and also reproduces the reproduction signal containing digital data for PCM still image to the PCM still image processing circuit. Supply to 6.

P output from the PCM still image processing circuit 6
The CM still image signal is sent to the built-in image forming circuit via the switch 20, and is embedded and combined with the video signal output from the video signal processing circuit 5, and then output from the output terminal 21. At this time, selection of whether or not to incorporate the PCM still image signal is controlled by a signal from the input terminal 22.

As described above, according to the conventional example, as can be seen from FIG. 12, since the recording areas of the moving image and the PCM still image are separate, the PCM still image (moving image) is recorded after the moving image (PCM still image) is recorded. Newly, there is an advantage that editing work such as additional recording or deletion can be freely performed.

[0010]

As described above, in the conventional example, the main description is that the image information is recorded in an area different from the recording area of the video signal, thereby providing a new use. It means that you can get it. However, a detailed description of how to display the images recorded in the different areas on the screen is not given.

Normally, when there are a plurality of screens to be displayed, for example, as shown in FIG. 13, all the display screens are switched and displayed by incorporating other screens in one screen or by switching a switch. Let

FIG. 13 is an image in which a signal output from the output terminal 21 is displayed on a monitor or the like, P is a display area of a PCM still image, and N is a display of a so-called normal VTR reproduction image (hereinafter, moving image). Area.

As can be seen from FIG. 13, in the area P, P
As long as the CM still image is displayed, the moving image in the displayed portion cannot be viewed. In general, the region P can be moved to any place on the monitor screen according to the preference of the user, but it has to be operated according to the display contents of the moving image and the like, which is complicated.

Further, in the method of switching each screen,
There is a drawback that you cannot see multiple screens at the same time.

The above can be improved in use by automatically performing the display operation.

However, since it may be necessary to devise an automatic display operation, it will be described below.

The monitor for the current television system, NTSC system, has an aspect ratio of a1: b (4: 3).
(Hereinafter, a monitor with this aspect ratio is referred to as a normal screen monitor). On the other hand, the aspect ratio is a2: in conformity with the standard for high-definition broadcast monitors.
What is b (16: 9) (hereinafter, wide-screen monitor) has been developed and put on the market.

The difference in screen display between the normal screen and the wide screen will be described with reference to FIG.

FIG. 14 is a display image when a video signal for a normal screen (for example, a reproduction signal of a VTR for NTSC system) is displayed on a wide screen monitor. 14
(U) is a method in which the horizontal width of the normal screen is enlarged so as to match the wide screen, and the portion protruding above and below is cut so that the screen is not displayed. Although it can be displayed as a large screen, it has a drawback that the images at the upper end and the lower end are not displayed.

Next, in (v), the vertical width of the normal screen is matched with that of the wide screen, so that the horizontal width becomes insufficient and no signal is displayed as a non-display portion on both sides of the wide screen. Is the way. In this case, even though the wide-screen monitor can display a large screen,
This causes an inconvenience that the screen cannot be effectively used.

Therefore, when a plurality of screens such as moving images and PCM still images are displayed on a wide screen monitor, the method of incorporating the screens as shown in FIG. 13 causes a non-displayed portion as shown in FIG. 14 (v). In spite of this, the PCM still image causes a further lack of display in the moving image.

Therefore, in a wide screen monitor,
On the contrary, displaying a PCM still image in the non-display portion can effectively utilize the large screen.

As described above, it is necessary to switch the display method depending on the monitor to be displayed when the display operation of a plurality of screens is automatically performed.

Therefore, an object of the present invention is to prevent a non-display portion from appearing on the display screen as much as possible when displaying a plurality of screens such as PCM still images and moving images regardless of the wide screen monitor and the normal screen monitor. It is to display on the screen.

[0025]

In order to solve the above-mentioned problems, display of a moving image, a PCM still image, etc. is performed so that a non-displayed portion is not generated as much as possible on each monitor screen of a wide screen monitor and a normal screen monitor. A processing circuit for allocating an area and synthesizing and creating a video signal that enables the screen display is provided and output from the VTR. At that time, a means for discriminating the video content of the reproduction signal is provided, and based on the discrimination result, the method of synthesizing the video signals is automatically switched by the control on the VTR side by the wide screen monitor and the normal screen monitor. To do.

[0026]

With the above configuration, a plurality of screens such as a moving image and a PCM still image can be displayed without the user's special operation.
The wide screen monitor and the normal screen monitor can be viewed so that the non-displayed portion is not generated as much as possible. This makes it possible to effectively utilize the large screen display, especially on a wide screen monitor.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the basic structure of the present invention.

1 is a magnetic tape, 2 and 3 are magnetic heads, 4
Is a reproduction control circuit, 5 is a video signal processing circuit, 6 is a PCM still image processing circuit, 7 is a compressed composite signal generation circuit, 8 is a switch, 9, 10, 12, 14 are input terminals, 13 and 73 are output terminals, Reference numeral 70 is a PCM still image discrimination circuit, 71 is a video mode discrimination circuit, and 72 is a display mode control circuit. The operation of FIG. 1 will be described below. However, description of the same parts as those in FIG. 11 will be omitted.

In FIG. 1, the video signal output from the video signal processing circuit 5 (hereinafter, moving image signal) and the signal output from the PCM still image processing circuit 6 (hereinafter, still image signal) are input terminals respectively. It is input to the compressed composite signal creation circuit 7 via 9 and 10.

After the display field angles of the moving image signal and the still image signal have been converted by the compression / composition signal generation circuit 7, when they are combined and displayed on the monitor screen, there is no non-displayed portion and the entire screen is displayed. Create the signal to be emitted.

On the other hand, the PCM still image discrimination circuit 70 is
Whether or not the M still image is recorded and the type of the video signal are discriminated and output to the display mode discrimination circuit 72.

The determination method is as follows, for example.

In the recording area 26 in FIG. 12, for example,
When the type of the video signal is recorded in advance, the type of the video is determined by reading the information.

Alternatively, the presence or absence of recording of the PCM still image signal is determined from the recorded contents of the PCM recording area 25.

The video mode discriminating circuit 71 pays attention to the characteristics of the video signal such as the change of the luminance level of the video signal,
By extracting, the type of video is determined and output to the display mode determination circuit 72.

The display mode discrimination circuit 72 controls the compression / synthesis signal generation circuit 7 and the switch 8 based on the discrimination results from the PCM still image discrimination circuit 70 and the video mode discrimination circuit 71. Further, when it is necessary to control the display circuit inside the normal screen monitor or the wide screen monitor, a signal for performing the control is output to the output terminal 73 to enable connection to the monitor.

The display mode discrimination circuit 72 can be controlled by a signal from the input terminal 14 when the user needs to control the display mode independently.

Further, the compressed combined signal forming circuit 7 controls the display angle of view of each of the moving image signal and the still image signal, and the arrangement of the two in the case of combining, in accordance with the signal from the display mode discrimination circuit 72. .

The signal output from the compression composite signal generation circuit 7 (hereinafter referred to as the compression composite signal) is input to the switch 8 via the output terminal 11, and the control signal from the display mode control circuit 72 changes the compression composite signal. If selected, the signal is output from the output terminal 13.

The switch 8 can switch the output to the output terminal 13 to a moving image or a still image according to a control signal from the display mode control circuit 72.

Next, the configuration of the compression / synthesis signal generation circuit 7 will be described.

FIG. 16 shows the configuration of the compressed / synthesized signal generating device 7. Reference numeral 15 is a horizontal / vertical compression circuit a, 16 is a horizontal / vertical compression circuit b, 17 is a mode control, and 18 is a screen synthesis circuit. The moving picture signal from the video signal processing circuit 5 of FIG.
After that, the angle of view is converted according to the instruction of the mode control 17 and input to the screen compositing circuit 18. The PCM still image signal from the PCM still image processing circuit 6 is also input to the horizontal / vertical compression circuit b16 via the input terminal 10, and then the angle of view is converted according to the instruction of the mode control 17 and input to the screen compositing circuit 18. To be done.

Next, the screen synthesizing circuit 18 receives the moving image signal whose angle of view is converted according to the instruction from the mode control 17 and the PC.
The M still image signals are combined to form a screen, which is output as a compressed combined signal.

The mode control 17 controls the horizontal / vertical compression circuit a15, the horizontal / vertical compression circuit b16, and the screen synthesis circuit 18 in accordance with the control signal from the display mode control circuit 72.

Here, the output signal of the compression / synthesis signal generation circuit 7 and the screen display on the monitor will be described with reference to FIGS. 14 and 15.
Will be explained.

FIG. 15 (x) shows a compression / synthesis signal generation circuit 7
Schematic display of the output signal of a normal screen monitor,
(Y) is a display schematic diagram on a wide-screen monitor.

As shown in FIG. 15, the output signal of the compression / synthesis signal generation circuit 7 can be displayed on a normal screen monitor and a wide screen monitor even though the aspect ratio is different.

This is a wide screen monitor, and in the case of a normal screen signal, in order to eliminate the non-display portion, it is provided with a signal processing circuit for horizontally extending the video signal so that it can be displayed on the entire wide screen. Things have been developed and are shown in Figure 15.
The display of is due to the use of this signal processing circuit.

The display of a wide screen monitor equipped with this signal processing circuit will be described below.

FIG. 14 (w) shows a display screen when the normal screen signal is displayed on this wide screen monitor. The normal screen signal is horizontally aligned according to the width of the wide screen by the operation of the signal processing circuit. As a result of the expansion processing in the direction, the non-display portion generated in (v) is eliminated.

However, as shown in (w), if the normal screen signal is input as it is, the image becomes horizontally long.
To prevent this, if the video part of the wide screen signal is compressed in the horizontal direction in advance (time axis compression) and the same standard as the normal screen signal is used, it will be displayed on a wide screen monitor (y). The aspect ratio will be restored to normal (correct roundness) and displayed. (The result of the compression conversion in the horizontal direction is a vertically elongated image on the normal screen monitor as shown in FIG. 15 (x).) The normal screen is compressed by horizontally compressing the wide screen signal. The video signal converted into the same standard as the signal will be called a squeeze signal.

Since the horizontal and vertical synchronizing signals of the squeeze signal have the same standard as the normal screen signal, they can be displayed on both the normal screen monitor and the wide screen monitor.

Further, the current VTR also records and reproduces a signal for a normal screen, and there is no one that can directly record and reproduce a video signal for a wide screen, but if it is converted into a squeeze signal, it becomes a VTR. Recording and playback is possible.

As a method of creating the squeeze signal, in an electronic camera, for example, a special lens is used to compress the image formed on the image pickup device in the horizontal direction and then convert and output it as an electric signal. The element that corresponds to the same aspect ratio (16: 9) as the wide screen is used, while the read clock of the image sensor is the same as that of the normal screen image sensor, and as a result, the output signal is compressed in the horizontal direction. There are ways to convert.

In the present invention, in order to create this squeeze signal, the image memory used in the compression / synthesized signal creation circuit 7 of FIG. 1 is one corresponding to a normal screen having an aspect ratio of 4: 3. On the other hand, the video signal to be written in the image memory is compressed and expanded in advance, and is read out at a clock such that it becomes a video signal for a normal screen at the time of reading, so that it is compressed and converted in the horizontal direction to generate a squeeze signal.

Next, a wide screen display screen according to the present invention will be described with reference to FIG.

FIG. 17 illustrates a screen display method when a normal mode image is displayed on a normal screen monitor and a wide screen monitor.

In FIG. 17, when displaying a displayed image on a wide screen monitor with a normal screen monitor as shown in (a), the PCM still image shown in (d) is incorporated, or (b), (). Multiple screens are combined and displayed as in c).

The display method of (b) is a non-display portion (FIG. 1) which occurs when a normal screen signal is displayed on a wide screen monitor.
4 (v)), three PCM still images are vertically arranged side by side. A moving image and a PCM still image can be displayed at the same time, and (c) further increases the number of displayed PCM still images. It is a thing. Both (b) and (c) have an advantage that a wide screen can be effectively used.

Next, FIG. 16, FIG. 17, FIG. 3, FIG.
The signal processing of the compressed / synthesized signal generating device 7 and the waveform of the compressed / synthesized signal will be described with reference to FIG.

In the following, signal processing for displaying on a wide screen monitor as shown in FIGS. 17 (b) and 17 (c) will be described.

FIG. 2 shows the entire memory area of the image memory in the screen compositing circuit 18, which is shown in correspondence with a monitor screen having an aspect ratio of 4: 3. MN in Figure 2
1 indicates a memory area in which a moving image is written, MP1, MP
2 and MP3 indicate a memory area in which a still image is written and an arrangement. FIG. 3 is a diagram in which the image memory written as shown in FIG. 2 is input as a read video signal to the normal screen monitor and displayed on the screen. Further, FIG. 5 shows a screen displayed by inputting on the wide screen monitor.
7 (b).

In FIG. 3, the aspect ratio is set to a1: b (for example, 4: 3, and here, in order to simplify the calculation, a1 =
12, and b = 9. ) Is a display screen when the above-mentioned compressed and synthesized signal is displayed on the monitor screen of), N1 indicates a display angle of view of a moving image, and P1, P2 and P3 indicate a display angle and arrangement of a still image.

In FIG. 4, Ns is a normal VTR (for example, Ns).
TSC system) reproduction signal, Sa, Sb, Sc are compression combined signals output from the compression combined signal generating circuit 7, Th is one horizontal scanning period, E0 is a period displayed on the monitor screen, E
N1, EN2, EP1, EP4, EP11, EP6, E
P7, EP8, and EP9 are horizontal and vertical compression circuits a, respectively.
15 shows the horizontal display period of the video signal compressed in the horizontal direction in the horizontal / vertical compression circuit b16.

The signal processing in the case where the image is displayed on the monitor screen as shown in FIG. 3 will be described with reference to FIGS. 2 and 4.

The display screen as shown in FIG. 3 is selected because all the screens of N1, P1, P2 and P3 have the same aspect ratio.

In FIG. 2, MN1 is a horizontal / vertical compression circuit a.
Memory areas in which 15 output signals are written, MP1, M
P2 and MP3 are memory areas in which the output signals of the horizontal / vertical compression circuit b16 are written, and the angle of view thereof has an aspect ratio of 1: 1 (a1 / 4: b / 3 = 1: 1).
Is.

Since the input signals of the horizontal / vertical compression circuit a15 and the horizontal / vertical compression circuit b16 are both signals having an aspect ratio of 4: 3, the compression ratio of the horizontal / vertical compression circuit a15 is
Horizontal direction--3 / 4.

The compression ratio of the horizontal / vertical compression circuit b16 is -1/4 in the horizontal direction and -1/3 in the vertical direction.

As a result, the above-mentioned MN1, MP1, MP
2, MP3 memory area becomes writable.

Therefore, in the horizontal / vertical compression circuit a15, for example, an image memory having a storable screen aspect ratio of 4: 3 is used, and the moving image signal from the video signal processing circuit 5 is written in the image memory to move in the horizontal direction. At the time of reading, the read clock is set to 4/3 times the write clock to compress it to 3/4.

In the horizontal / vertical compression circuit b16, the PCM still image processing circuit 6 is added to the image memory having an aspect ratio of 4: 3.
The still picture signal is written, and when read out in the horizontal direction, the read clock is quadrupled the write clock to compress it to ¼. Further, in the vertical direction, the line is thinned to compress it to 1/3.

A configuration example of the compression processing of the horizontal and vertical compression circuits a and 15 horizontal and vertical compression circuits b16 will be described later.

By the above processing, the signals compressed in the horizontal and vertical directions are written in the image memory of the image synthesizing circuit 18 in the arrangement as shown in FIG. At this time, in the vertical direction, the still image signal is switched every b / 3 as shown in FIG.
A memory area for P2 and MP3 is formed. After the above writing, a compressed composite signal is created by reading with a read clock that becomes a video signal for a monitor screen having an aspect ratio of 4: 3.

The waveform of the compressed combined signal in this case is shown in FIG.

The waveforms of the moving image signal output from the video signal processing circuit 5 and the still image signal output from the PCM still image processing circuit 6 are initially shaped like Ns in FIG. However, in the compressed combined signal Sa, the moving image signal is compressed to 3/4 by the horizontal and vertical compression circuit a15.

[0077]

[Equation 1] EN1 = 3 · E0 / 4, and the still image signal is 1 / in the horizontal / vertical compression circuit b16.
Because it is compressed to 4

[0078]

## EQU2 ## EP1 = E0 / 4. The horizontal scanning cycle of Sa is also Th (about 63.5
56 μsec), the screen display as shown in FIG. 3 can be obtained with the normal screen type monitor, and the screen display as shown in FIG. 5 can be obtained with the wide screen monitor.

As a result, the moving image and the PCM still image can be simultaneously viewed on the monitor screen without overlapping. Therefore, while watching both screens at the same time, for example, PCM
When it is desired to see the still image, an operation such as controlling the switch 8 from the input terminal 14 and selecting only the still image signal from the PCM still image processing circuit 6 is possible.

However, when both the moving image and still image screens are displayed on the normal screen monitor using the above-mentioned compressed and synthesized signal, both the moving image signal and the still image signal are horizontally compressed to 3/4, so that The screen is a vertically expanded screen.

Next, FIG. 7 shows an embodiment in which the arrangement of moving images and still images is changed to increase the number of still image display screens.
This will be described with reference to FIGS. 6, 8 and 4.

FIG. 6 shows the entire memory area of the image memory in the screen compositing circuit 18 in association with a monitor screen having an aspect ratio of 4: 3. MN2 designates memory areas in which moving images are written as MP4 and MP5. , MP6, M
P7, MP8, MP9, MP10, and MP11 indicate a memory area in which a still image is written and an arrangement. FIG. 7 shows a screen display in which the image memory written as shown in FIG. 6 is input as a read video signal to the normal screen monitor.

FIG. 7 shows a display screen when the compressed composite signal is projected on a monitor screen having an aspect ratio of a1: b, which is the same as (c) of FIG.
Is P4, P5, P6, P7, P8, P9, P
Reference numerals 10 and P11 indicate a display angle of view and a layout of a still image.

Signal processing displayed as shown in FIG. 7 when displayed on a normal screen monitor and as shown in FIG. 8 when displayed on a wide screen monitor will be described with reference to FIGS. 6 and 4.
Will be explained.

Similar to the above-described embodiment, in order to be able to write the moving image signal and the still image signal in the image memory of FIG. 6, the compression ratios of the horizontal and vertical compression circuits a15 and b16 are as follows. Is required.

The compression ratio of the horizontal / vertical compression circuit a15 is --1 / 2 in the horizontal direction and --2 / 3 in the vertical direction.

The compression ratio of the horizontal / vertical compression circuit b16 is -1/4 in the horizontal direction and -1/3 in the vertical direction.

By the above processing, the signals compressed in the horizontal and vertical directions are written in the image memory of the image synthesizing circuit 18 in the arrangement as shown in FIG. At this time, in the vertical direction, as shown in FIG.
2 memory areas are formed, the still image signal is switched every b / 3, and MP4, MP11, MP5, MP10, MP6
A memory area for MP7, MP8, and MP9 is formed. After the above writing, a compressed composite signal is created by reading with a read clock that becomes a video signal for a monitor screen having an aspect ratio of 4: 3.

The waveform of the compressed combined signal in this case is shown in FIG.

The waveforms of the moving image signal output from the video signal processing circuit 5 and the still image signal output from the PCM still image processing circuit 6 are initially shaped like Ns in FIG. However, in the compressed combined signals Sb and Sc, the moving image signal is compressed to 1/2 in the horizontal / vertical compression circuit a15.

[0091]

[Equation 3] EN2 = 1 · E0 / 2, and the still image signal is 1/0 in the horizontal / vertical compression circuit b16.
Because it is compressed to 4

[0092]

## EQU4 ## EP4 to EP11 = E0 / 4. In FIG. 6, the moving image signal MN is 2b / 3.
Still image signals MP6, MP7, MP from the memory area of 2
8 and the MP9 memory area are switched, so that the output compression combined signal is also switched from Sb to Sc. Note that Sb,
The horizontal scanning cycle of Sc is also Th (about 63.556 μsec).
Therefore, it can be displayed on a normal screen monitor, and a screen display image as shown in FIG. 7 can be obtained. Further, FIG. 8 shows a display screen when this compressed combined signal is displayed on a wide screen monitor, and an image with a correct roundness can be obtained as in FIG.

Next, another embodiment of the image synthesizing circuit 18 will be described with reference to FIG.

However, in this case, the image obtained by the compression combined signal is as shown in FIG. 2 for the normal screen monitor and as shown in FIG. 5 for the wide screen monitor.

In FIG. 9, the aspect ratio is a2: b (for example,
16 is a diagram showing recording areas of a moving image signal and a still image signal in an image memory corresponding to a wide screen of 16: 9).

In FIG. 9, MWN1 designates a memory area in which a moving image is written as MWP1, MWP2 and MWP3.
Indicates a memory area in which a still image is written and an arrangement.

In order to make it possible to write a moving image signal and a still image signal in the image memory of FIG. 9, a horizontal and vertical compression circuit a15 is used.
Does not require compression either horizontally or vertically,
Only the horizontal / vertical compression circuit b16 has a compression rate in the horizontal direction of -1.
/ 3, and the vertical direction is -1/3.

By the above processing, the signals compressed in the horizontal and vertical directions are written in the image memory of the image synthesizing circuit 18 in the arrangement as shown in FIG. 9 and read by the read clock which becomes the video signal for the normal screen. Create a compressed composite signal.

FIG. 10 shows another embodiment of the image synthesizing circuit 18, and the obtained images are shown in FIG. 6 and FIG. 8 in order to perform the same processing as the embodiment of FIG. ,
The description is omitted.

Here, an example of the configuration of the compression / synthesis circuit 7 is shown in FIG.
Shown in.

FIG. 18 is a diagram for explaining a circuit for creating a compressed combined signal by using an image memory for the aspect ratio of the screen to be stored as 4: 3 as shown in FIG.

First, 30, 40 and 50 are image memories and 3
1, 41, 51 are write control circuits, 32, 42, 52
Is a read control circuit, 60 is an AD converter, 61 is an AD converter control, 29 is a DA converter, and 28 is a DA converter control. Further, WK, WNK, WPK are clocks for writing signals in the image memory, and WC, WNC, WPC are write control signals for image memory for designating write addresses when writing signals in the image memory, and RK, R
NK and RPK are clocks for writing signals to the image memory, RC, RNC and RPC are control signals for reading from the image memory for designating a read address when reading data from the image memory, and ADK is an AD converter. Is a clock for driving the AD converter, ADC is a control signal for controlling the AD converter, DAK is a clock for driving the DA converter, and DAC is a control signal for controlling the DA converter. Note that the relationship between the write and read clocks in FIG. 18 has already been described above, and will be omitted.

FIG. 19 shows a display method for displaying a video signal in the Vista mode on a wide screen monitor. The Vista mode is a display mode for displaying a theatrical movie on the monitor, and since it is horizontally long, blank bands are displayed above and below the normal screen monitor as shown in FIG. 19 (h). However, when it is displayed on a wide screen monitor, the screen shown in FIG.
The non-display band as shown in (i) is thinner than that of a normal screen monitor. Alternatively, it is also possible to eliminate the non-display band by extending in the vertical direction as shown in (j). In the cases (i) and (j), the PCM still image is controlled to be incorporated in the moving image.

The display mode control circuit determines that such a display is a Vista mode signal as a result of the feature extraction of the video signal from the video signal processing circuit 5 by the video mode determination circuit 71. The PCM still image discriminating circuit 71 outputs the determination result to 72 or indicates that the image in the Vista mode is previously recorded in the recording area 26.
Discriminates and outputs the result to the display mode control circuit 72, and then the display mode control circuit 72 outputs a control signal to the input terminal 12 of the compression synthesis signal control circuit 7 to control the compression synthesis signal control circuit 7. It depends.

[0105]

As described above, according to the present invention, a moving image recorded on a VTR and a PCM still image can be viewed on the monitor screen without overlapping, and the usability of VTR reproduction and editing is improved. The effect will be obtained.

In particular, when the output signal according to the present invention is displayed on a wide screen monitor, a moving image with a correct roundness and a PCM still image can be simultaneously viewed without being compressed in the horizontal direction, and the wide screen can be viewed. The non-display part has also disappeared, making it possible to effectively use the large screen.

When a wide screen monitor displays a plurality of screens as described in the present invention, a signal source,
Also, it is necessary to connect to the monitor as many as the number of display screens, but according to the present invention, it is possible to send and receive signals with only one system, and the troublesome work of connecting the signal line becomes unnecessary, and it is easy to use. Improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is a moving image in an image memory having an aspect ratio a1: b,
It is a figure which shows the 1st example of the writing arrangement drawing of a PCM still image.

FIG. 3 is a display schematic diagram when a video signal created by reading out the image memory of FIG. 2 is displayed on a normal screen monitor.

FIG. 4 is a diagram illustrating a signal waveform of a squeeze signal.

5 is a display schematic diagram when a video signal created by reading the image memory of FIG. 3 is displayed on a wide screen monitor.

FIG. 6 is a moving image in an image memory having an aspect ratio a1: b,
It is a figure which shows the 2nd example of a writing arrangement of a PCM still image.

7 is a display schematic diagram when a video signal read out from the image memory of FIG. 6 and created is displayed on a normal screen monitor.

8 is a schematic display diagram when a video signal read out from the image memory of FIG. 7 and created is displayed on a wide screen monitor.

FIG. 9 is a moving image in an image memory having an aspect ratio a2: b,
It is a figure which shows the 3rd example of a writing arrangement of a PCM still image.

FIG. 10 is a diagram showing a fourth example of the arrangement of writing moving images and PCM still images in an image memory having an aspect ratio a2: b.

FIG. 11 is a block diagram illustrating a configuration of a conventional example.

FIG. 12 is a diagram showing a conventional magnetic tape recording format.

FIG. 13 is a diagram showing a screen display example of a moving image and a PCM still image on a normal screen monitor.

FIG. 14 is a schematic diagram illustrating a difference in display screen size between a normal screen and a wide screen.

FIG. 15 is a display schematic diagram when a squeeze signal is displayed on a normal screen monitor and a wide screen monitor.

FIG. 16 is a block diagram showing a configuration of a compression combined signal generation circuit.

FIG. 17 is a diagram showing an example of a screen display when a normal screen signal is displayed on a wide screen monitor.

FIG. 18 is a block diagram showing a configuration example of a compression combined signal generation circuit.

FIG. 19 is a diagram showing a screen display example when a Vista mode video signal is displayed on a wide screen monitor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Magnetic tape, 2, 3 ... Magnetic head, 4 ... Reproduction control circuit, 5 ... Video signal processing circuit, 6 ... PCM still image processing circuit, 7 ... Compression synthetic signal creation circuit, 8 ... Switch, 9, 10, 12 , 14 ... Input terminal, 13, 73 ... Output terminal, 70 ... PCM still image determination circuit, 71 ... Video mode determination circuit, 72 ... Display mode control circuit, a1: b ... Normal screen aspect ratio, a2: b ... Wide screen Aspect ratio, a3: b ... Vista mode screen aspect ratio, MN1 ... Movie image memory writing area, MP1 to MP11 ... PCM still image image memory writing area, N1, N2 ... Movie normal screen monitor display area, P1 to P11 ... Normal screen monitor display area for PCM still image, WN1, WN2 ... Wide screen monitor display area for moving image, WP1 to WP11 Wide screen monitor display area of PCM still image, Th ... 1 horizontal scanning period of video signal, E0 ... Video signal period, EN1, EN2 ... Video image signal period, EP1-EP11 ... PCM still image video signal period , Ns ... Normal screen signal waveform, Sa, Sb, Sc ... Squeeze signal waveform, 30, 40, 50 ... Image memory, 31, 41, 51 ... Write control circuit, 32, 42, 52 ... Read control circuit, 60 ... AD Converter, 61 ... AD converter control, 29 ... DA converter, 28 ... DA converter control, WK, WNK, WPK ... Clock for writing signal to image memory, WC, WNC, WPC ... Signal to image memory Write control signals for image memory that specify write address when writing, RK, RNK, RPK ... Write signals to image memory Clock for reading, RC, RNC, RPC ... Read-out control signal from image memory for designating read address when reading data from image memory, ADK ... Clock for driving AD converter, ADC ... AD Control signal for controlling the converter, DAK ... Clock for driving the DA converter, DAC ... Control signal for controlling the DA converter.

Claims (3)

[Claims] 1. A plurality of magnetic heads are rotated while being switched, and a video signal is displayed in a first area and a track number or other information signal is displayed in a second area on an oblique extension line of a magnetic tape. Means for detecting the angle of view of the video signal by extracting the characteristics of the video signal recorded in the first area in a device provided with means for recording and reproducing the digitized audio signal in the third area Or, the angle of view of the video signal recorded in the first area or the content of the signal recorded in the third area is detected from the information signal recorded in the second area of the magnetic tape. Or a means for detecting the content of the signal recorded in the third area, and a horizontal and vertical compression circuit a for converting the angle of view of the video signal obtained by reproducing the first area. , Play the third area A horizontal / vertical compression circuit b for converting the angle of view of a video signal to be reproduced, and two video signals with the angle of view converted from the horizontal / vertical compression circuit a and the horizontal / vertical compression circuit b are combined to display a new image on the monitor screen If it is detected that a video signal is recorded instead of the digitized audio signal in the third area, the first area is played back. The horizontal and vertical compression circuit a converts the angle of view of the obtained video signal, and the horizontal and vertical compression circuit b converts the angle of view of the video signal obtained by reproducing the third area. A video signal recording / reproducing device comprising a circuit for synthesizing the video signals thus created and creating a video signal that can be simultaneously displayed on a monitor screen. 2. The aspect ratio of the monitor capable of displaying the output signal according to claim 1 is a1: b (for example, 4 :.
3) A video signal recording / reproducing device characterized in that 3. The aspect ratio of the monitor capable of displaying the output signal according to claim 1 is a2 (a2> a1): b.
(For example, 16: 9) Video signal recording / reproducing apparatus.