JPH0937304A - Stereoscopic picture reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stereoscopic picture reproducing device capable of recording right and left video signals on one side of a discoid recording medium, reproducing the recorded video signals as a stereoscopic picture by simple circuit constitution and allowing an original recording medium to be reproduced only by an exclusive reproducing device. SOLUTION: Right and left video signals are separated into a luminance signal and a color difference signal by a video processing part 7, respective separated signals are converted into digital signals by respective A/D conversion circuits 11 to 13 through respective low pass filters(LPFs) 8 to 10, the left video signal is stored in memories 14 to 16 by a timing generation circuit 34, and the right video signal is stored in memories 17 to 19. The right and left signals are read out from the memories 14 to 19 by a control signal outputted from the circuit 34 so as to be synchronously outputted and converted into analog signals by D/A conversion circuits 20 to 25 and right and left composite video signals are outputted from a video processing part 32 through LPFs 26 to 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic video reproducing apparatus for reproducing stereoscopic video recorded on a recording medium, and more particularly to recording left and right video signals on one recording medium and recording the same. The present invention relates to a stereoscopic image reproducing device for reproducing a.

[0002]

2. Description of the Related Art In recent years, at various event venues, amusement facilities using stereoscopic images have been installed as often as possible. In addition, interest in stereoscopic vision including 3D (stereoscopic) art is increasing in various fields, and expectations for 3D video software are being greatly received. Under the present circumstances where 3D video software is not recognized as general broadcasting software, the current situation is that we have no choice but to rely on the supply of 3D by package media.

By the way, generally, in order to obtain a 3D image, respective video signals for the left eye and the right eye are required, and a possible method for generating the left and right video signals is a video for the left eye. It is a conventional practice to have a signal source (for example, an LD / VTR) that generates a signal and a video signal for the right eye, and to operate the two signal sources in synchronization to display the left and right video signals. Has been proposed by.

On the other hand, with respect to one disk recording medium, left and right video signals are recorded on the front surface and the back surface, respectively, and at the time of reproduction, the front and back video signals are simultaneously read out to display a 3D video signal. Proposed.

However, the above-mentioned method has a problem that two signal sources are required, and that a special recording medium and a special reproducing device are necessary.

Further, in a recording medium recording a 3D video signal, if the recorded original video signal can be viewed by any reproducing apparatus, there is a problem in that the original video of a corner is diverted to another facility. Occurs.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and the left and right video signals are recorded on one side of one disk-shaped recording medium, and the recorded video signals are recorded. It is an object of the present invention to provide a stereoscopic image reproducing apparatus capable of reproducing a stereoscopic image by reproducing with a simple circuit configuration and reproducing an original recording medium only by a dedicated reproducing apparatus.

[0008]

SUMMARY OF THE INVENTION The present invention is a stereoscopic video signal reproducing apparatus for reproducing a recording medium on which left and right video signals are recorded for each field, and a stereoscopic video signal recorded on the recording medium. A first reproducing means for reproducing a stereoscopic video signal from the reproducing means into a digital signal;
Storage means, second storage means for storing only the right video signal from the output from the analog-digital conversion means, and left and right video signals from the first storage means and the second storage means. Analog-to-analog conversion means for converting a digital signal into an analog signal, means for outputting left and right video signals from the digital-analog conversion means, and control for controlling writing and reading of the first storage means and the second storage means And a means for reproducing a stereoscopic video image.

The present invention is a stereoscopic video signal reproducing apparatus for reproducing a recording medium on which left and right video signals compressed to ½ in one horizontal scanning line period are recorded, and recorded on the recording medium. A reproducing means for reproducing the stereoscopic video signal, an analog-digital converting means for converting the stereoscopic video signal from the reproducing means into a digital signal, and a first video signal storing only a left video signal from the output from the analog-digital converting means. Storage means, second storage means for storing only the right video signal from the output from the analog-digital conversion means, and left and right video signals from the first storage means and the second storage means. Digital-analog conversion means for converting into an analog signal, means for outputting left and right video signals from the digital-analog conversion means, the first storage means and the second storage means It is comprised of a control means for controlling writing and reading of a stereoscopic image reproducing apparatus according to claim.

[0010]

According to the present invention, with the above-mentioned configuration, the left and right stereoscopic video signals recorded on one disk-shaped recording medium are separately stored by the memory, and reproduced and output. Video output can be output independently. Further, by inserting the scramble information into the video signal, it can be reproduced only by a dedicated reproducing device.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the concept of an embodiment of the present invention, in which 1 is a video signal for the right eye (L) and the left eye (R) are arranged in time series, and 2 is a disc-shaped recording medium. In the embodiment, LD (laser disk) is used. 3 is LD2
For reproducing LDP (laser disc player), 4 for L
A converter for separating and outputting the L and R signals reproduced from D2, 5 is a projector for outputting a video signal for L,
Reference numeral 6 is a projector that outputs a video signal for R.

Next, this operation will be briefly described. First,
An LD video signal and an R video signal are recorded in the LD2 for each field, and the recorded video signal is reproduced by the LDP3. Then, the reproduced video signal is
The converter 4 separates and outputs the left and right video signals, and displays the stereoscopic video on the left and right projectors 5 and 6 to synthesize the stereoscopic video.

Here, the conversion device 5 which is a feature of the present invention.
Will be described. First, the conversion device 5 is configured as shown in FIG. 2, and 7 is input with a composite video signal reproduced from the LDP 3 or a video signal from the S terminal, and a luminance (Y) signal and a color difference (R- Y, BY)
Video signal processing units (for example, the video signal processing unit 7 may output R, G, and B primary color signals), 8, 9, and 10 remove noise. Low pass filter (LPF) for 11, 12,
13 is an analog-digital (A / D) conversion circuit, 14 and 1
5, 16, 17, 18, and 19 are field memories, 2
0, 21, 22, 23, 24, 25 are digital-analog (D / A) conversion circuits, 26, 27, 28, 29, 30,
31 is a low-pass filter for removing noise, 32
Is a Y signal and a video signal processing unit for converting the RY and BY signals into a composite video signal, 33 is a sync separation circuit for separating the sync signal, and 34 is various timing signals based on the sync signal from the sync separation circuit 33. Is a timing generation circuit for creating.

Next, the operation will be described. Either the composite video signal output from the LDP 3 or the luminance and color signals from the S terminal is input to the video processing unit 7. As the input signal, as shown in FIG. 3, a right video signal (L1) and a left video signal (R1) are alternately output for each field.

The video signal is separated by the video processing section 7 into a luminance (Y) signal and a color difference (RY, BY) signal, which is then output. Then, the Y signal, the R-Y signal, and the B-Y signal are converted into digital signals by the A / D conversion circuits 11, 12, and 13 after the noise components are removed by the low-pass filters 8, 9 and 10, respectively. It

On the other hand, the timing separation circuit 34 extracts vertical and horizontal synchronization signals from the Y signal by the synchronization separation circuit 33.
To supply. The timing generation circuit 34 creates a signal for controlling writing and reading of a memory, which will be described later, based on the vertical and horizontal synchronizing signals.
/ D conversion circuits 11, 12, 13 and D / A conversion circuit 2
A clock for controlling 0, 21, 22, 23, 24, 25 is output. This timing generation circuit has an oscillation circuit (not shown) that oscillates a clock having a frequency of 4fsc (fsc is the frequency of the color subcarrier) based on the synchronization signal.

Therefore, the A / D conversion circuits 11, 12,
13 is a clock from the timing generation circuit 24 (4 fs
It is sampled in c) and converted into a digital signal.
Then, as shown in FIG. 3, a write control signal (WR) from the timing generation circuit 34 is output to the memories 14, 15 and 16 so that the right-eye (LCH) video signal is stored. On the other hand, the memories 17, 18, 1
As shown in FIG. 3, the write control signal (WR) from the timing generation circuit 24 is output to 9 so that the video signal for the left eye (RCH) is stored. In this way, the memories 14 to 19 store the Y signal, the RY signal, and the BY signal for the left eye and the right eye, respectively.

Subsequent reading from the memory is as follows. First, the memories 14, 15, 16 store LCH video signals, and the memories 17, 18, 19 are
Stores the RCH video signal. However, since the video signal is sent for each field, it is read as follows. That is, the video signal is L1 as shown in FIG.
/R1/L2/R2...Ln/Rn are sent in order. Since it is necessary to write them in the memory and output the right and left simultaneously, the video signals stored in the memories 14 to 19 are Since the L signal is stored first, the timing generation circuit 34 sends the control signal (RD) to the memories 14 to 19 so that the L signal and the R signal are simultaneously read in synchronization when the R signal is written in the memory. Output and control.

The signals read from the memories 14 to 19 are the same as the L and R signals for two fields. The Y, RY, and BY of the L and R signals are D /
The signals are input to the A conversion circuits 20 to 25, converted into analog signals, removed of noise components by the low pass filters 26 to 31, and input to the video processing unit 32. The video processing unit 32 uses Y, RY, and BY of L and R signals.
Is again converted into a composite video signal, and an L composite video signal and an R composite video signal are output and output to the projectors 5 and 6 which are the respective display units. As a result, a stereoscopic image is reproduced.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4, 5 and 6. FIG. 4 is a conceptual diagram of the second embodiment of the present invention, and the same parts as those in FIG. 1 have the same functions, so that the description thereof will be omitted. First, in FIG. 4, 41 is an L video signal, 42 is an R video signal, 43 is a controller for combining two screens, 44 is a combined video signal, and 45 is an L and R signal reproduced from LD2. It is a conversion device that outputs separately.

This operation will be described. The controller 43 controls the L and R video signals 4 which are independently present.
1, 42 are respectively compressed to 1/2, and the L and R video signals 44 are combined during one horizontal scanning period as shown in FIG. The synthesized video signal 44 is recorded in LD2,
The composite video signal from the recorded LD2 is reproduced by the LDP3, the converter 45 separates and outputs the L and R video signals, and the projectors 5 and 6 display the stereoscopic video.

Here, the specific structure of the converter 45 will be described with reference to FIG. Note that, in FIG. 5, the same reference numerals as those in FIG. 2 indicate the same functions, and thus the description thereof will be omitted.

In FIG. 5, 140, 150, 160,
Reference numerals 170, 180 and 190 denote memories capable of storing video signals in one horizontal scanning period, and 35 denotes a timing generation circuit for controlling reading / writing of the memories 140 to 190 and generating various clocks. Next, the operation will be described. First, either the composite video signal output from the LDP 3 or the luminance and color signals from the S terminal is input to the video processing unit 7. As the input signal, as shown in FIG. 6, a video signal obtained by combining the right video signal (L) and the left video signal (R) in one horizontal scanning line period is output.

The video signal is separated into a luminance (Y) signal and a color difference (RY, BY) signal in the video processing section 7, and the output is outputted. Then, the Y signal, the R-Y signal, and the B-Y signal are converted into digital signals by the A / D conversion circuits 11, 12, and 13 after the noise components are removed by the low-pass filters 8, 9 and 10, respectively. It

On the other hand, the timing separation circuit 35 extracts vertical and horizontal synchronization signals from the Y signal by the synchronization separation circuit 33.
To supply. The timing generation circuit 35 creates a signal for controlling writing and reading of a memory described later based on the vertical and horizontal synchronizing signals, and A
/ D conversion circuits 11, 12, 13 and D / A conversion circuit 2
A clock for controlling 0, 21, 22, 23, 24, 25 is output. The timing generation circuit 35 has an oscillation circuit (not shown) that oscillates a clock having a frequency of 8 fsc and 4 fsc (fsc is the frequency of the color subcarrier) based on the synchronization signal. A is used to convert the L and R signals that are compressed to 1/2 during the horizontal scanning line period into digital signals.
The / D conversion circuits 11, 12, and 13 are timing generation circuits 2
The signal is sampled by the 8 fsc clock (CLK1) from 4 and converted into a digital signal.

Then, to the memories 140, 150, and 160, as shown in FIG. 6, the right-eye (LCH) video signal is sampled 910 (controlled by a clock of 8 fsc).
The write control signal (WR) is output from the timing generation circuit 35 so as to be stored in. On the other hand, as shown in FIG. 6, the write control signal (WR) from the timing generation circuit 35 is stored in the memories 170, 180, and 190 so that the left-eye (RCH) video signal is stored at the same sampling rate. Is output. In this manner, the memories 140 to 190 store the Y signal, the RY signal, and the BY signal for the left eye and the right eye, respectively.

Subsequent reading from the memory is as follows. First, the memories 140, 150, 160 have L
The video signal of CH is stored, and the memories 170 and 18
0 and 190 store RCH video signals. However, since the video signal is transmitted after being compressed to 1/2, it is read as follows. That is, as shown in FIG. 6, since the video signal, the right and the left, must be output at the same time, the L signal of the video signals stored in the memories 140 to 190 is stored first, so that the R signal is stored in the memory. When written, the timing generation circuit 35 outputs a control signal (RD) to the memories 140 to 190 to control so that the L signal and the R signal are simultaneously read in synchronization.

Since the signals read from the memories 140 to 190 are compressed to 1/2 and need to be expanded, the read control is performed at a frequency of 4 fsc. This L signal and R signal Y, RY, BY
Is input to the D / A conversion circuits 20 to 25 and 4 fsc
Is converted to an analog signal with the clock (CLK2) of
Noise components are removed by the low pass filters 26 to 31 and are input to the video processing unit 32. This video processing unit 32
Is a projector that is a display unit for converting Y, RY, and BY of the L signal and the R signal into a composite video signal again, outputting the L composite video signal and the R composite video signal. It is output to 5 and 6. As a result, a stereoscopic image is reproduced.

Next, reproduction of scrambled stereoscopic image software will be described with reference to FIGS. 7 and 8. Currently, such 3D image software is often used in facilities as described in the prior art, so it is often original software. When playing such software, the playback device is also original. To use. Then, in order to protect the original software as described above, the original software can be played back only by this playback device.

Therefore, in this embodiment, as shown in FIGS. 8A and 8B, 21 line, 22 line and 28 line of the video signal.
Scramble signals are inserted in the 2nd line and the 283th line. For example, a black level signal is inserted in line 21 and a gray level signal is inserted in line 22. And
A gray level signal is inserted in line 282 and a black level signal is inserted in line 283.

Next, a case of reproducing such software will be described. As described above, the stereoscopic image is reproduced by the reproducing apparatus having the configuration shown in FIG. 2, and the L signal and the R signal are reproduced.
The description of the operation will be omitted, and the operation by the scramble signal will be described.

First, in FIG. 7, the same reference numerals as those in FIG. 2 have the same functions and will not be described. Reference numeral 37 denotes Y, RY, and Y of the L signal reproduced from the D / A conversion circuits 20, 21 and 22.
A video conversion circuit for converting BY into a composite video signal, and a video 38 for converting Y, RY and BY of the R signal reproduced from the D / A conversion circuits 23, 24 and 25 into a composite video signal. Conversion circuit, 36 is a switch SW
The switching circuits 1 to SW4 are configured inside the video processing unit 32. Further, 39 is a scramble determination circuit for detecting and determining a scramble signal, 40 is a control circuit for controlling the switching circuit 36, and SW
Reference numeral 5 denotes a scramble release switch, SW6 is an L / R switch, and SW7 is a through switch for outputting a composite video signal to the through.

The stereoscopic image reproduced from the LD 2 is separated into L and R signals by the circuit of FIG.
Switching circuit 36 as a composite video signal at 38
Is input to The composite signal in which L and R are mixed from the LD 2 is also input to the switching circuit 36.

On the other hand, the 21-line / 22-line / 283-line / 284-line scramble signal is discriminated from the Y signal from the A / D conversion circuit 11 to determine whether or not there are scramble signals of a and b of FIG. judge. The determination signal is input to the control circuit 40.

When there is a scrambled signal, the control circuit 40 selects SW1 of the switching circuit 36 to output the L signal and SW2 of the switching circuit 36 to output the R signal. SW3 is also switched so as to select the output from the video conversion circuits 37 and 38. At this time, when the L / R switch SW6 is turned on, the control unit 40 causes the SW1 to output the R signal and the SW2 to output the L signal.
Switching to select signals, SW3 and SW4 select the outputs of the video conversion circuits 37 and 38. When the through switch SW7 is turned on, SW3 and SW4 are L and R.
The composite video signal is output so that the composite video signal is output.

On the other hand, if a composite video signal without a scramble signal as shown in FIG. 8C is input, the scramble determination circuit 39 determines that there is no scramble, and the control circuit 40 combines SW3 and SW4 with L and R. Control to switch so as to output a composite video signal. At this time, when the descrambling switch SW5 is turned on, SW3 and SW4 can be switched to the output side of the video conversion circuits 37 and 38 for output. Normally, the scramble cancel switch SW5 is not used for reproducing the software containing the scramble signal, so that it is usually arranged at a position where it cannot be pushed.

By doing this, the original software is
The L and R signals are automatically separated and output.

[0038]

According to the present invention, left and right stereoscopic video signals are recorded on one recording medium, and the recorded stereoscopic video signals are separated into left and right video signals by one reproducing device. Can be output. Further, since the scramble information is inserted in the original software, the software can be protected because the stereoscopic video signal can be obtained only by the device capable of reproducing the software.

[Brief description of drawings]

FIG. 1 shows a conceptual block diagram of an embodiment of the present invention.

FIG. 2 shows a block diagram of an embodiment of a specific reproducing apparatus of the present invention.

FIG. 3 is a diagram for explaining a read / write operation of a memory according to an embodiment of the present invention.

FIG. 4 shows a conceptual block diagram of a second embodiment of the present invention.

FIG. 5 shows a block diagram of a second embodiment of a specific reproducing apparatus of the present invention.

FIG. 6 is a diagram for explaining the read and write operations of the memory according to the second embodiment of the present invention.

FIG. 7 shows a block diagram of switching by scrambling according to the present invention.

FIG. 8 shows a scrambling waveform diagram of the present invention.

[Explanation of symbols]

 1 Stereoscopic Video Signal 2 Laser Disc 3 Laser Disc Player 4 Converter 5 Left Projector 6 Right Projector

Claims (3)

[Claims] 1. A stereoscopic video signal reproducing apparatus for reproducing a recording medium on which left and right video signals are recorded for each field, and reproducing means for reproducing the stereoscopic video signal recorded on the recording medium, An analog-digital conversion means for converting the stereoscopic video signal from the reproduction means into a digital signal, a first storage means for storing only a video signal for the left from the output from the analog-digital conversion means, and an analog-digital conversion means Second storage means for storing only the right video signal from the output; digital-analog conversion means for converting the left and right video signals from the first storage means and the second storage means into analog signals; Means for outputting left and right video signals from the digital-analog conversion means, and writing and reading to and from the first storage means and the second storage means Stereoscopic image reproducing apparatus characterized by comprising a control for controlling means. 2. A stereoscopic video signal reproducing apparatus for reproducing a recording medium on which left and right video signals compressed to 1/2 in one horizontal scanning line period are recorded, wherein the stereoscopic image is recorded on the recording medium. Reproducing means for reproducing a signal, analog-digital converting means for converting a stereoscopic video signal from the reproducing means into a digital signal, and first storage means for storing only a video signal for left from the output from the analog-digital converting means. And second storage means for storing only the right video signal from the output from the analog-digital conversion means, and the left and right video signals from the first storage means and the second storage means as analog signals. A digital-analog conversion means for converting into a digital image, a means for outputting the left and right video signals from the digital-analog conversion means, the first storage means and the second storage means Stereoscopic image reproducing apparatus characterized by comprising a control means for controlling writing and reading. 3. The stereoscopic reproduction apparatus according to claim 1, wherein a scramble signal is superimposed on the stereoscopic video signal, and a discrimination means for discriminating the scrambled signal and the stereoscopic video signal or the output means. A stereoscopic video reproducing apparatus comprising a switch means for selecting the left and right stereoscopic video signals from the above, and a control means for controlling the switch means based on the discrimination means.