JPH0595567A - Stereoscopic video recording disk - Google Patents

Abstract

PURPOSE:To reproduce both stereoscopic image and normal image by recording a jumping signal code in a frame so as to instruct the jump of a chasing track while being superimposed to a video signal. CONSTITUTION:The first and second video signals of two video cameras are successively and alternately recorded in every two fields so as to be spiral tracks. The jumping code to instruct the jump of the chasing track is recorded in the almost central part of each frame in the video signal. Among the fields recorded by jumping the track according to the instruction of the suitable jumping signal code, fields R0, L1, R2, L3, R4, L5... are successively reproduced. Then, since the disk is composed of polarized spectacles differring in right and left polarizing planes so as to observe the fields corresponding to the right eye among video signals with the right eye and to observe fields corresponding to the left eye with the left eye, namely, so as to alternately observe the fields R0, R2 and R4 only with the right eye and the fields L1, L3 and L5 only with the left eye, stereoscopic images can be observed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic video recording disc.

[0002]

2. Description of the Related Art FIG. 8 is a diagram showing a conventional disc on which a video signal is recorded. In the figure, 1 is a disc, 2 is a spiral track on which a video signal is recorded, F ₁ ,
F ₂ , F ₃ , ... are the fields of the image, A, B, C,
... indicates the boundary of each field.

FIG. 9 is a diagram for explaining a method of recording an image on the above-mentioned disc. 3 is a subject, 4 is a video camera,
5 is for recording the output of the video camera 4, for example, V
A storage device such as a TR, a recording processing circuit 6 for converting a video signal into a signal suitable for recording a disc, for example, for performing frequency modulation, a motor 7 for rotating the disc 1, and a motor 7 The reference numeral 9 designates a timing signal generator which sends various timing signals to the storage device 5 and the disc servo 8.

Next, the track formation of this disk will be described with reference to FIGS. The subject 3 is photographed by the video camera 4, and the optical image is converted into an electric image signal. This video signal is recorded in the storage device 5 (for example, VTR). The storage device 5 sequentially sends out video signals in accordance with a command from the timing signal generator 9. This video signal is frequency-modulated by the recording processing circuit 6 and then recorded on the disk 1 by a recording transducer (not shown). The recording transducer is a magnetic head when the disk is a magnetic medium, and a laser concentrator when the disk is an optical medium, and various forms are used depending on the medium. The recording transducer is fed at a constant speed in the radial direction of the disc by a radial feeding mechanism (not shown).

The disk 1 is rotated by a motor 7 under the control of a disk servo 8. In response to a command from the timing signal generator 9, the disk servo 8 controls the rotation of the motor 7 in relation to the field frequency of the video signal from the storage device 5, and rotates exactly once in two fields of the video signal.

In this way, the video signal is recorded on the disc 1, and when the disc 1 makes one revolution, the video for two fields is recorded. That is, as shown in FIG. 8, assuming that the disk 1 rotates in the direction of arrow X, the disk 1
A half rotation (180 °) of the field F ₁ of the video signal
Tracks from to B, field F ₂ in the next half rotation
The tracks from B to C are formed one after another in the same manner, and a spiral track is formed as shown in FIG.

Although the video camera signal is once recorded in the storage device and then recorded in the disk,
Even if the signal from the video camera is directly recorded on the disc in real time, the spiral track as described above can be recorded without necessarily passing through the storage device.

Next, when a signal is reproduced from such a disc, the disc 1 is rotated in the same manner as at the time of recording, the signal is read from the spiral track by the reproduction transducer, and reproduction processing such as frequency demodulation is performed. It is possible to obtain a reproduced video signal by applying. The detailed description is omitted here.

[0009]

Since the recording tracks of the conventional disc are constructed as described above, there is a problem that stereoscopic video cannot be reproduced.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a stereoscopic video recording disk capable of reproducing both stereoscopic video and ordinary video.

[0011]

A stereoscopic video recording disk according to the present invention has two video cameras arranged at positions equivalent to the positions of the left and right eyes and picks up an image. The second video signal is recorded alternately as a spiral track for every two fields, and the first jumping signal code for superimposing on the video signal and instructing to jump the tracking track is used as the first jumping signal code. , The second video signal is recorded at approximately the center of each frame of one video signal or at the center of each frame of the other video signal. Further, a second jumping signal code for superposing on the video signal and instructing to jump the tracking track is provided with a second half field of one video signal of the first and second video signals and a first half of the other video signal. The video signal is recorded almost at the center of the video signal composed of the above field, or at the center of the video signal composed of the latter half field of the other video signal and the first half field of the one video signal.

[0012]

In the present invention, because of the above-mentioned configuration, when reproducing, the track on the disk is switched over according to the instruction of the first or second jumping signal code, and either a stereoscopic image or a normal image is arbitrarily selected. Can be selected and played.

[0013]

1 is a plan view showing a stereoscopic video recording disk according to an embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 8 indicate the same or corresponding portions, and R ₀ , R ₁ , R ₂ ,
... is the field of the video signal corresponding to the right eye, that is, the first field
Of the video signal captured by the video camera, L ₀ , L ₁ , L ₂ , ... Are the fields of the video signal corresponding to the left eye, that is, the tracks of the video signal captured by the second video camera. , A, B, C, ... Show the boundaries of each field.

FIG. 2 is a diagram showing a structure for recording on the disc, and FIG. 3 is a waveform diagram at the time of recording. In the figure, the same reference numerals as those in FIG. 9 denote the same or corresponding parts, and 4a.
Is a first video camera corresponding to the right eye, 4b is a second video camera corresponding to the left eye, and 5a and 5b store the outputs of the first and second video cameras 4a and 4b, respectively, such as a VTR. Storage device, 10 is a changeover switch, 11 is a jumping signal code generator, and 12 is an adder.

3A shows the output of the changeover switch 10, FIG. 3B shows the command signal applied to the changeover switch 10 from the timing signal generator 9, and FIG. 3C shows the recording processing circuit 6.
Output, Figure 3 (d) shows jumping signal code generator 1
1 is an output, f is a first jumping signal code recorded in the central portion of each frame of one video signal, and r is a second jumping signal code recorded in a portion where the two video signals are switched. is there.

FIG. 4 is a diagram showing track scanning when reproducing a stereoscopic image, FIG. 5 is a diagram showing track scanning when reproducing a stereoscopic still image, and FIG. 6 is a diagram showing track scanning when reproducing a normal image. FIG. 7 and FIG. 7 are diagrams showing track scanning when reproducing a normal still image.

Next, the track format of the disk according to the present invention will be described. As shown in FIG. 2, the same subject 3
In contrast, the video camera 4a is placed at a position equivalent to the distance between the left and right eyes.
And 4b are arranged, and images are taken from two directions with parallax as shown in the figure. The video cameras 4a and 4b operate in synchronization with each other based on the synchronization signal generated by the timing signal generator 9. These image pickup signals are respectively recorded in the storage devices 5a and 5b such as a VTR. The stored video signal is read from the storage device 5a or 5b at a desired timing based on a command from the timing signal generator 9, and these signals are guided to the changeover switch 10. The change-over switch 10 is controlled by the output of the timing signal generator 9 so that the change-over switch 10 is switched in correlation with the reading of the stored signal. That is, the changeover switch 10 is alternately changed over by the changeover control pulse shown in FIG. 3B, and the output of the changeover switch 10 is, as shown in FIG. ₀ , R ₁ ],
[L ₀ , L ₁ ], [R ₂ , R ₃ ], [L ₂ , L ₃ ], ...
Video signals are obtained in the order of. This video signal is frequency-modulated by the next recording processing circuit 6 and is applied to the adder 12 as a signal as shown in FIG.

Further, a jumping signal code generator 11
In response to a command from the timing signal generator 9, is a timing substantially corresponding to a central portion of the video signal of the unit of two fields output from the one storage device 5a, for example, a timing before the vertical synchronizing signal, and FIG. ), The first jumping signal code f is generated, and the video signal of the latter half field output from the storage device 5a and the video signal of the adjacent one field output from the storage device 5b are approximately at the center. As shown in FIG. 3D, the second jumping signal code r is generated at the timing corresponding to the part. The jumping signal code and the video signal are multiplexed by the adder 12 and guided to a recording transducer (not shown) in the same manner as described in the conventional device.
It is recorded on the disc 1. Under the control of the disk servo 8 which receives a command from the timing signal generator 9, the disk 1 makes one revolution in one frame (two fields) of the video signal. The recording transducer is fed from the inside to the outside of the disc at a constant speed by a radial feed mechanism (not shown). As shown in FIG. 1, when the disc 1 is rotated in the direction indicated by an arrow X, a spiral recording track is formed. Or formed. In this way, one field of the video signal is recorded every half rotation of the disk 1, and just two fields (that is, one frame) is recorded by one rotation. This state is shown in FIG. 1, where R ₀ -R ₁ -L ₀ -L
_{1 -R 2 -R 3 -L 2 -L} 3 - ...... As the track is formed by each field, A, C, E, G, I,
The first jumping signal code f is recorded at the position indicated by f among the points, ..., B, D, F, H, ...
The second jumping signal code r is recorded at the position indicated by r among the points.

The method of forming tracks on the disk according to the present invention has been described above. Next, a method of obtaining a stereoscopic image or a normal image from such a disk will be described. First, do the following to get a stereoscopic image. A reproduction transducer transferred by a radial feed mechanism reproduces a signal from a recording track, separates a video signal and a jumping signal code from this signal, and the video signal is subjected to reproduction processing such as frequency demodulation and led to a television monitor. When the reproduction transducer detects the first jumping signal code f,
Jumping control is performed so as to transfer to one outer track and reproduce. In this way, the reproducing transducer sequentially reproduces R ₀ , L ₁ , R ₂ , L ₃ , R ₄ , L ₅ , ... Of the recorded fields as shown in FIG. That is, a video signal corresponding to the subject image viewed by the right eye and a video signal corresponding to the subject image viewed by the left eye are made to have different polarization planes alternately for each field. In glasses, the field corresponding to the right eye of the above video signal is the right eye, the field corresponding to the left eye is the left eye, that is, R ₀ , R ₂ , R ₄ , ... are only the right eye, and L ₁ , L ₃ , L ₅ , ... has only the left eye, and if it is configured so as to be seen alternately, a stereoscopic image can be seen. When viewing a still reproduced image of a stereoscopic image, when the radial feed mechanism is stopped and the reproducing transducer detects the first jumping signal code f, the reproducing transducer is controlled to move to the inner track, and as a result, for example, As shown in FIG. 5, R ₂ , L ₁ , R ₂ , L ₁ ,
The playback of ... is repeated, and the stereoscopic still image can be viewed.

Next, in order to obtain a normal image, the following is done.
Similar to the above, the reproducing transducer reproduces a signal from the recording track, and when the reproducing transducer detects the second jumping signal code r, the reproducing transducer is moved to one outer track and reproduced. By doing so, the reproducing transducer sequentially reproduces R ₀ , R ₁ , R ₂ , R ₃ , ... As shown in FIG. That is, in this case, a video signal corresponding to the subject image viewed by the right eye is reproduced on the television monitor, and a normal video can be viewed. In addition, when viewing still reproduction, when the second jumping signal code r is detected, the reproduction is performed by moving to the inner track, that is, for example, in FIG.
When reproduced as shown in (3), a still image of a normal image can be reproduced.

In the above embodiment, the second jumping signal code r is recorded in addition to the first jumping signal code f in order to reproduce a normal image, but the second jumping signal code r is not recorded. However, the control can also be performed only by the first jumping signal code f. For that purpose, after detecting the first jumping signal code f, the reproducing transducer may be shifted to the adjacent track by one field delay. ..

If a signal such as a track number that can identify each field or frame is recorded in each field or each frame of the video signal, the jumping signal code does not necessarily have to be recorded, and the track cannot be recorded. When the reproducing transducer detects the vertical synchronizing signal by using the reproducing signal of the number as a clue, it can be used to perform the various jumping controls described above.

In the above embodiment, R ₀ , L ₁ , R ₂ , among the fields recorded to obtain a stereoscopic image,
The first jumping signal code f was recorded so that it could be reproduced in the order of L ₃ , R ₄ , L ₅ , ..., But the first jumping signal code f ′ was recorded at the positions of C, G ,. Is recorded and the second jumping signal code r ′ is recorded at the positions of D, H, ..., By using these as a clue to perform jumping control of the reproducing transducer, L ₀ , R ₁ , L ₂ , R ₃ , L ₄ , ... Can be reproduced in this order, so that a stereoscopic image can be obtained also in this case. The second
If jumping control is performed by the jumping signal code r'of, it is possible to reproduce in the order of L ₀ , L ₁ , L ₂ , L ₃ , L ₄ , ..., It is also possible to obtain a normal image. Also, when obtaining such a stereoscopic or normal image, it is not always the first
Both the first and second jumping signal codes f ′ and r ′ are not necessary, and it is possible to use only the first jumping signal code f ′, or the above-mentioned method of using the track number.

Further, as is clear from the above, by recording four kinds of jumping signal codes f, r, f ', r'or any three kinds, two kinds or one kind, various reproductions as described above are carried out. The form can also be obtained. Further, although the example of obtaining the still image reproduction of the stereoscopic image or the normal image from the disc has been described above, other special reproduction can be easily obtained.

[0025]

As described above, according to the three-dimensional image recording disc of the present invention, the image signals corresponding to the images seen by the left and right eyes are alternately recorded every one rotation of the disc in units of one frame. To form a spiral recording track, and an image is formed at approximately the center of each frame of one of the first and second image signals, or approximately at the center of each frame of the other image signal. A first jumping signal code for superposing on the signal to instruct to jump the tracking track is recorded, and the latter half field of one of the first and second video signals and the first half of the other video signal are recorded. In the almost center part of the video signal consisting of
Alternatively, a second jumping signal code for instructing to jump the tracking track by superimposing it on the video signal in the substantially central portion of the video signal composed of the latter half field of the other video signal and the first half field of the one video signal. Is recorded, so that by appropriately controlling the reproducing method, there is an effect that a stereoscopic image can be reproduced and a normal image can also be reproduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a stereoscopic video recording disk according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a system for recording a stereoscopic image on the disc shown in FIG.

3 is an operation waveform diagram of the system of FIG.

4 is a diagram showing a track scanning locus for reproducing a stereoscopic image from the disc shown in FIG.

5 is a diagram showing a track scanning locus for reproducing a stereoscopic still image from the disc shown in FIG.

FIG. 6 is a diagram showing a track scanning locus for reproducing a normal image from the disc shown in FIG.

7 is a diagram showing a track scanning locus for performing still reproduction of a normal image from the disc shown in FIG.

FIG. 8 is a plan view showing a conventional disc.

FIG. 9 is a configuration diagram showing a conventional system for recording a video signal on a disc.

[Explanation of symbols]

1 disk 2 recording tracks R ₀ , R ₁ , ... video signal fields L ₀ , L ₁ , ... corresponding to the right eye ... video signal fields f, f'corresponding to the left eye 1st jumping signal code r, r ′ Second jumping signal code

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 5/85 D 7916-5C

Claims (6)

[Claims] 1. The first and second video signals obtained by picking up the same subject image from two directions with parallax are alternately switched for each frame, and a spiral pattern is sequentially formed on a disc rotating at a cycle of one frame. A three-dimensional video recording disk for recording so that a track is superposed on the video signal at substantially the center of each frame of one of the first and second video signals. A stereoscopic video recording disk, characterized in that a first jumping signal code for instructing to jump is recorded. 2. A video signal, which is composed of a latter half field of one video signal of the first and second video signals and a first half field of the other video signal, is superposed on the video signal at a substantially central portion thereof and is tracked. 2. The stereoscopic video recording disc according to claim 1, wherein a second jumping signal code for instructing to jump a track is recorded. 3. A substantially central portion of a video signal consisting of a latter half field of one of the first and second video signals and a first half field of the other video signal and a latter half field of the other video signal. And a different second jumping signal code for instructing to jump a tracking track to a substantially central portion of a video signal composed of the first half field of the one video signal and superposed on these video signals and recorded. The stereoscopic video recording disk according to claim 1, which is characterized in that. 4. The first and second video signals obtained by picking up the same subject image in two directions with parallax are alternately switched for each frame, and a spiral pattern is sequentially formed on a disk rotating at a cycle of one frame. A stereoscopic video recording disk for recording so as to form a track of, wherein substantially the center of each frame of one of the first and second video signals and substantially the center of each frame of the other video signal. A stereoscopic video recording disk, characterized in that different first jumping signal codes for instructing a jump of a tracking track are recorded on a portion thereof so as to be superimposed on these video signals. 5. A video signal, which is composed of the latter half field of one video signal of the first and second video signals and the first half field of the other video signal, is superposed on the video signal substantially at the center thereof and traced. The stereoscopic video recording disk according to claim 4, wherein a second jumping signal code for instructing to jump a track is recorded. 6. A substantially central portion of a video signal including a latter half field of one of the first and second video signals and a first half field of the other video signal, and a latter half field of the other video signal. And a different second jumping signal code for instructing to jump a tracking track to a substantially central portion of a video signal composed of the first half field of the one video signal and superposed on these video signals and recorded. The stereoscopic video recording disk according to claim 4, wherein the disk is a stereoscopic video recording disk.