JPH09252455A - Video recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record plural television broadcast programs onto one recording medium at once. SOLUTION: In the case of recording programs on one magnetic tape as a recording medium, for example, patterns of two video signals are synthesized so as to be arranged to each division part of a monitor screen 3a and the synthesized image is recorded as one video signal, and in the case of reproducing the recording content of the magnetic tape, the video signal synthesizing the two patterns into one is reproduced at first and a pattern is selected from the reproduced signal, then the selected pattern is magnified fully onto the monitor screen 3a of a video monitor 3 for the display. Thus, two television broadcast programs are recorded and reproduced on one magnetic tape at once and multi-recording is attained while keeping a format of the magnetic tape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording / reproducing apparatus capable of recording and reproducing a plurality of television broadcasting programs on one recording medium at a time.

[0002]

2. Description of the Related Art As a video recording / reproducing apparatus capable of recording a plurality of television broadcast programs on one recording medium at a time, the contents of two television programs are simultaneously recorded on a magnetic tape of a video cassette (tape cassette). A video tape recorder (VTR) capable of playing is known. In this VTR, two television tuners (hereinafter T
V tuner) for receiving two TV programs at the same time. The rotary drum head has two sets of video recording heads, and when recording on a magnetic tape by the helical scan system, separate programs are recorded every other line. The audio is recorded separately by a fixed head and a so-called hi-fi head. During reproduction, the selected one of the two video signals is displayed, and the audio that matches the selected one is reproduced.

[0003]

In the above VTR, one recording track of one magnetic tape is divided into two,
Since two different video signals will be recorded by two different video heads, even if it is attempted to be reproduced by a normal VTR, two recorded video signals will be traced by one head. As a result, the signals are mixed with each other, which causes a problem that reproduction cannot be performed. That is, there is no compatibility. Also, during playback, two programs cannot be played at the same time, and one of them is selected and played, so two programs are displayed at the same time even if two TV programs are included. I couldn't do that. Furthermore, even if more programs are to be recorded at the same time, it is difficult because the number of heads attached to one rotary drum head is physically limited.

Therefore, the present invention provides a video recording / reproducing apparatus capable of recording and reproducing a plurality of television broadcast programs on one recording medium at a time.

[0005]

In a video recording / reproducing apparatus in which a plurality of video signals are simultaneously recorded / reproduced in one recording medium, the plurality of video signals are recorded in one recording medium at the same time. Means for synthesizing images so that the screens of the video signals of 1 are respectively arranged in the divided parts of one monitor screen, and recording them as one video signal; First, play back the video signal that combines the screens into one screen,
When a selection is made from the above, a means for enlarging and displaying the selected screen so as to fill the monitor screen is provided.

When a magnetic tape as a recording medium is reproduced by a normal video tape recorder (VTR), a so-called multi-screen image and a high fidelity sound for a high fidelity VTR and a fixed head sound for a monaural VTR are reproduced. Therefore, the recorded contents can be enjoyed and compatibility is maintained. It is also possible to play back a plurality of recorded television broadcast programs at the same time and select one. In addition, one image, for example, 4
By dividing into 6 or 6, 4 or 6 programs can be recorded at the same time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a video recording / reproducing apparatus 1 according to a first embodiment of the present invention. The video recording / reproducing apparatus 1 is capable of simultaneously recording video signals of two television broadcast programs received from the television antenna 2. When the video recording / reproducing apparatus 1 is reproduced by the video monitor 3, as shown in FIG. 1, the images of the two TV programs are displayed in parallel on the monitor screen 3a of the video monitor 3, and the audio is reproduced. Only one program is available. Here, the video recording / reproducing apparatus 1 is provided with, for example, an operation button 4 or a remote controller 5 provided on the front surface of the casing-type apparatus body 1a.
When the video (1) or the video (2) shown in FIG. 1 is selected by remote control with, the video is displayed on the video monitor 3 in the full monitor screen 3a, and the sound of the program comes out.

Next, the recording / reproducing mechanism of the video recording / reproducing apparatus 1 will be described with reference to FIG. When a television signal (video signal) is input to the video recording / reproducing apparatus 1 from the television antenna 2, the first television tuner (hereinafter referred to as TV tuner) 7a and the second TV tuner are passed through the booster / distributor 6. 7b is input. And the operation button 4
When two TV stations are selected by, for example, the two TV tuners 7a and 7b are notified of the selection via the control circuit 8, and the two stations are selected.
Video signals and audio signals are output from the two TV tuners 7a and 7b, respectively.
An image on the upper left of FIG. 2 is a drawing of two video signals output from b. The two video signals are combined by the image synthesizing circuit 9
As a result, a so-called double screen is combined as shown in the center image in FIG. Then, the combined video signal is recorded on the video tape recorder (VTR) 11 by the video signal recording / reproducing circuit 10a. That is, the synthesized video signal is VT by the video signal recording / reproducing circuit 10a.
A magnetic tape (recording medium) 1 in the video cassette 12 through a rotary head (not shown) of the rotary drum 11a of R11.
It will be recorded in 3. The two audio signals are recorded on the magnetic tape 13 by the audio signal recording / reproducing circuit 10b, the audio of the first TV tuner 7a is a high-fidelity audio recording, and the audio of the second TV tuner 7b is a system by a fixed head (not shown). It will be recorded in.

Next, when the VTR 11 is reproduced, a video signal having a double screen shape appears, and the audio signal outputs the sound of the first TV tuner 7a recorded by high-fidelity audio recording, and the monitor of the video monitor 3 is displayed. It is adapted to be displayed on the screen 3a. Here, by operating the operation button 4 (or the remote controller 5), for example, as shown in FIG.
When the video (1) shown in (1) is selected, only the image of the video (1) is enlarged by the image processing circuit 14 via the control circuit 8 to form a full-screen image on the monitor screen 3a.
The voice that matches the image is selected by the selection switch 20,
It is adapted to be reproduced from the video monitor 3. The same applies when the video (2) shown in FIGS. 1 and 2 is selected. The operation of the image processing circuit 14 will be described. A video output signal (OU) from the video signal recording / reproducing circuit 10a.
T) is A / D converted by the A (analog) / D (digital) signal conversion circuit 15 and then stored in the two-dimensional memory 16, from which the sync separation circuit (Sync SEP) 1
An image is once enlarged and cut out at an arbitrary enlargement ratio (base point X, enlargement ratio X, Y) at an arbitrary timing by a timing controller 19 to which 8 or the like is connected. The video signal cut out by the image processing circuit 14 and enlarged to fill the monitor screen 3a is output as a single video signal or the like to the video signal output terminal of the apparatus main body 1a via the D / A signal conversion circuit 17. It has become so.

According to the video recording / reproducing apparatus 1 of the above-described embodiment, since the two TV broadcast programs are once made into the multi-screen and then recorded, the VTR 1 to be recorded.
For 1, it is possible to use exactly the same as the conventional one. That is, when the magnetic tape 13 is reproduced by a normal VTR, a so-called multi-screen image and a hi-fi VT are displayed.
High fidelity sound is reproduced for R and sound by a fixed head is reproduced for monaural VTR, so that the contents recorded on the magnetic tape 13 can be enjoyed and there is compatibility. In addition, recorded video cassette 12
Even if the conventional VTR is used, the multi-image video and one audio are reproduced, and the contents can be viewed, which is very convenient. In addition, the screen is small in multi, but when this is selected, the monitor screen 3 of the video monitor 3 is automatically displayed.
It becomes a full size, which makes it very easy to see. As described above, since two television programs are once made into a multi-screen and then recorded, they can be used not only for recording and reproduction but also for transmission and the like, which is very convenient.

FIG. 3 shows a video recording / reproducing apparatus 1'according to a second embodiment of the present invention. The video recording / reproducing apparatus 1'of the second embodiment is configured so that four television broadcast programs can be simultaneously recorded on one magnetic tape 13, as shown in FIG. In this case, the processing of the video signal is basically the same as that of the first embodiment, and
What used to be two double screens is now four multi screens. However, regarding the voice, the existing VTR has only two types, that is, high-fidelity voice recording and voice recording by a fixed head, which is insufficient. Therefore, in the second embodiment, regarding the audio signal of the third TV tuner 7c and the audio signal of the fourth TV tuner 7d,
After being compressed by the signal compression circuit 21 and then encoded by the encoder 22, it is input to the image synthesizing circuit 9 so that it is written in blank portions A and B having no video, as in the image in the center of FIG. Has become. In this way, the four video signals and the two audio signals are combined into one video signal, which is recorded by the VTR 11 via the video signal recording / reproducing circuit 10a and the audio signal recording / reproducing circuit 10b.

When this VTR 11 is reproduced, the pre-processing circuit 23 extracts only the audio signal portion and the decoder 2
4 and the signal expansion circuit 25 becomes the original audio signal,
It is input to the audio signal selection switch 20. Here, FIG.
Although only the video (3) and video (4) signals shown in (1) are recorded and reproduced as video signals, the present invention is not limited to this, and video (1) is recorded by high fidelity audio recording and audio recording by a fixed head. Video (2), (3),
With regard to (4), recording and reproduction may be performed as a video signal. In addition, 4 programs (2 in the first embodiment)
The case of 6 programs has been described, but the same applies to the case of 6 programs or 12 programs. Furthermore, regarding the video,
Although it has been described that the images are reduced and enlarged in a similar manner, the aspect ratio may be changed (for example, set to be long) when the image is reduced, and the original aspect ratio may be restored when the image is enlarged. In addition, when the multi-screen is used as a recording screen, the blank portions A and B that do not contain the encoded video and audio do not have horizontal / vertical resolution enhancement that is performed in so-called wide clear vision broadcasting. A high resolution enhancement signal may be added for decoding and this signal may be decoded at the time of reproduction to improve the image. In this way, the image quality when the screen is enlarged can be made easier to see by inserting a high resolution enhancement signal for horizontal / vertical resolution enhancement in the blank portions A and B of the image.

According to each of the embodiments, the VTR is used as the recording / reproducing means, but the recording / reproducing means is not limited to this, and a recording medium such as a writable optical disk or magneto-optical disk is used. A disk drive device or the like may be used. Although a video monitor is used as a monitor, a television receiver or the like may be used as a monitor.

[0015]

As described above, according to the video recording / reproducing apparatus of the present invention, a plurality of television broadcast programs are once made into a multi-screen and then recorded, so that a portion such as a video tape recorder to be recorded is recorded. Can use exactly the same as the conventional one, and can improve compatibility and versatility. Further, even when the recorded software is used in a conventional video tape recorder or the like, a multi-screen image and one sound can be reproduced and the contents can be viewed, which is very convenient and convenient. In addition, although the screen is small in the multi mode, when this is selected, it automatically becomes the size of the monitor screen, and the screen becomes very easy to see.

[Brief description of drawings]

FIG. 1 is a perspective view showing a video recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a recording / playback mechanism of the video recording / playback apparatus.

FIG. 3 is a diagram illustrating a recording / playback mechanism of a video recording / playback apparatus according to a second embodiment.

FIG. 4 is an explanatory diagram showing a case where four programs are simultaneously recorded on one recording medium by the video recording / reproducing apparatus of the second embodiment.

[Explanation of symbols]

1, 1 '... video recording / reproducing device, 3a ... monitor screen, 7
a, 7b, 7c, 7d ... TV tuner, 11 ... Video tape recorder, 13 ... Magnetic tape (recording medium), 22 ...
Encoder, 24 ... Decoder, A, B ... Blank part of magnetic tape.

Claims (9)

[Claims] 1. A video recording / reproducing apparatus adapted to simultaneously record and reproduce a plurality of video signals on a single recording medium, the plurality of video signals being recorded on the same recording medium at the same time. Means for synthesizing images so that they are arranged in separate parts of one monitor screen and recording them as one video signal, and when reproducing one recording medium, the plurality of screens are A video characterized by having means for reproducing the video signal synthesized on one screen first, and then selecting and selecting one of them to enlarge and display the selected screen so that it fills the monitor screen. Recording / playback device. 2. The video recording / reproducing apparatus according to claim 1, wherein the audio signals accompanying the plurality of video signals are recorded on a recording medium on which the video is recorded, and the audio corresponding to the selected video is reproduced at the time of reproduction. A video recording / reproducing device characterized in that 3. The video recording / reproducing apparatus according to claim 1, wherein a plurality of television tuners are built in, and a plurality of broadcast television programs are simultaneously received and recorded. Video recording / playback device. 4. The video recording / reproducing apparatus according to claim 1, wherein two video signals are combined into one video signal on the left, right, top and bottom of a screen and recorded, and the recorded video signal is reproduced at the time of reproduction. Video recording / playback characterized by displaying two screens on one monitor screen at the same time by reproducing or by expanding one selected screen to fill the monitor screen. apparatus. 5. The video recording / reproducing apparatus according to claim 4, wherein the video recording / reproducing apparatus is a video tape recorder, and when recording an audio signal accompanying the two video signals, one audio signal is A video recording / reproducing apparatus characterized in that a fixed head of a video tape recorder and a rotary head of the other are used to write on a tape as the recording medium. 6. The video recording / reproducing apparatus according to claim 1, wherein the video recording / reproducing apparatus is a video tape recorder, and in recording the audio signal, the audio signal is processed and within a recording range for the video signal. A video recording / reproducing apparatus characterized in that the recording / reproducing is performed on the. 7. The video recording / reproducing apparatus according to claim 1, wherein at least one audio signal of the audio signals accompanying the plurality of video signals is encoded, and an image is synthesized so as to be combined with a part of a monitor screen. A video recording / reproducing apparatus characterized in that it is recorded as a part of a signal, and at the time of reproduction, it is decoded and returned to an audio signal. 8. The video recording / reproducing apparatus according to claim 1, wherein when the screens of the plurality of video signals are reduced and combined into a video signal of one screen, the aspect ratio is changed, A video recording / playback device, characterized in that when one of them is enlarged to fill the monitor screen, the original aspect ratio is used. 9. The video recording / reproducing apparatus according to claim 1, wherein when recording a plurality of video signals on the one recording medium, horizontal or / and vertical resolution enhancement is applied to a blank portion of an image recording range. A video recording / reproducing apparatus characterized in that a high-resolution reinforcement signal for is input so that this signal is decoded at the time of reproduction.