JPS63131686A - Stereo image reproducing device - Google Patents

Abstract

PURPOSE:To reproduce a stereo image in which flicker is not offensive, by writing information field by field in three field memories at every three fields, reading it out at double the speed at the time of writing when it is read, and simultaneously, setting the switching speed of a shutter spectacles double. CONSTITUTION:When a video signal in which right eye and left eye information are switched alternately at every field is inputted, it is converted to a digital signal at an A/D conversion circuit 3, and the right eye information is written on the field memory A4 at every three fields, and is read out at double speed for two times behind a field 1.5. Similarly, the next left eye information is written on the field memory B5, and is read out for two times similarly, and the right eye information is written on the field memory C6, and is read out for two times. Next, it is inputted to a display 9 via a D/A conversion circuit 8, and is deflected and displayed by a double speed synchronizing signal outputted from a double speed synchronization generation circuit 2. Simultaneously, a shutter spectacles control circuit 10 switches a right eye and a left eye shutter spectacles 11 and 12 at double speed the field by an input signal and the output of the double speed synchronization generation circuit 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a three-dimensional image reproduction device that utilizes the principle of binocular parallax.

2. Description of the Related Art In recent years, there has been a demand for images reproduced by television devices to be even more powerful and realistic.

Among these, 3D televisions that give reproduced images a 3D effect are also being studied. One method uses the parallax between the left and right eyes to alternately reproduce information from the left eye and information from the right eye, so that the left eye information enters only the left eye, and the right eye information enters only the right eye. Hereinafter, an embodiment of a conventional stereoscopic image reproducing apparatus will be described with reference to the drawings.

FIG. 3 is a block diagram of a conventional stereoscopic image reproducing apparatus, and FIG. 4 is an operational explanatory diagram to facilitate explanation of FIG. 3. Third
In the figure, 1 is a video signal input terminal, 1o is a control signal generation circuit, 9 is a display for reproducing images, and 11
12 is shutter glasses for the left eye, and 12 is shutter glasses for the right eye.

Further, in FIG. 4, k is the content of the video signal, l is an example when the video signal k is reproduced on the display 3, m, n
are control signals for turning on and off the shutter glasses for the left eye and the shutter glasses for the right eye, respectively. Furthermore, m
, n, when turned on, the shutter of the glasses opens and the reproduced image can be viewed through the glasses.

Now, let us consider a case where a video signal indicated by k in FIG. 4 is applied to the video signal input terminal 1 in FIG. 3, and the reproduced image l is displayed on the display in FIG. 3. This video signal (
In k) of FIG. 4, left eye information and right eye information are alternately switched for each field. The left eye information and the right eye information refer to the image seen from the left eye 22 and the image seen from the right eye, respectively, when looking at the object 21 as shown in FIG. 5, for example, and these are made to correspond to electrical signals. For the sake of the 6th
As shown in the figure, images are taken using two cameras 24 and 25 that have angles θ corresponding to the left and right eyes with respect to the object 21, respectively, and the image signals from the cameras 14 and 15 are used as left eye information and right eye information. This is considered eye information. Then, left eye information and right eye information are alternately switched for each field to form one video signal.

The reproduced image in this case is as shown in FIG.
Even if the object is stationary, the left eye information and right eye information can be obtained from camera A24. The position differs depending on the angle θ of camera B215. If this reproduced image (l in Figure 4) is viewed simultaneously with both the left and right eyes, a double image will result, but since the left eye information and right eye information are alternately switched for each field, the reproduced image When playing left eye information, only the left eye
On the other hand, if the right eye information can be viewed only with the right eye when reproducing information, the camera 24° camera 2 shown in Fig.
The effect of photographing using the 50 angle θ is enhanced, and it is possible to display a reproduced image with a stereoscopic effect using binocular parallax.

Therefore, the injection of information into the left eye and the right eye is switched using shutter glasses, alternating left and right for each field, synchronized with the video signal, and corresponding to the left eye information and right eye information. A control signal for turning each pair of glasses on and off (m in Figure 4).

This can be realized by obtaining K from the control signal generation circuit 2.

Problems to be Solved by the Invention However, in the above configuration, the left eye information and the right eye information are alternately switched for each field, that is, 60 fields, and for one eye, two fields, that is, 30
Since the reproduced image has a period of 1-1x, it is easy to feel flicker and is not suitable as a reproduced image. In view of the above problems, the present invention has developed a three-dimensional image that can display reproduced images without causing flicker. An image reproducing device is provided.Means for solving the problemsTo achieve this object, the stereoscopic image reproducing device of the present invention provides an image of left eye information and right eye information that is alternately switched for each field. It is constructed by storing a signal in a field memory and then reading it out twice at 1x speed, and at the same time, doubling the switching speed of the shutter glasses.

Effect: With this configuration, the information for the left eye and the information for the right eye both have a period of 608x, making it possible to reproduce a stereoscopic image without experiencing flicker.

EXAMPLES Below, a stereoscopic image reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration diagram of a stereoscopic image reproducing apparatus according to an embodiment of the present invention. In Fig. 1, 1 is a video signal input terminal, 2 is a double-speed synchronization generation circuit, 3 is an A/D conversion circuit, 4 is a field memory A, and 6 is a field memory B.
, 6 is a field memory C17 is a memory control circuit, 8 is a D/A conversion circuit, 9 is a display, 10 is a shutter glasses control circuit, 11 is a shutter glasses for the left eye, 12
are shutter glasses for the right eye.

The operation of the three-dimensional image reproducing apparatus configured as described above will be explained below with reference to FIGS. 1 and 2.

First, FIG. 2 is an explanatory diagram of the operation of FIG. 1.

As shown in FIG. 2, the video input terminal 1 in FIG.
In the figure, R is right eye information, L is left eye information, and numbers are field numbers.) A video signal is input in which left eye information and right eye information are alternately switched for each field.

The double-speed synchronization generation circuit 2 generates a horizontal synchronization signal (15,75 KHz) and a vertical synchronization signal (eol-b) from the input signal.
), and from this signal, double-speed horizontal synchronization signal (3
1.6KHz), double-speed vertical synchronization signal (120Hz)
Create. Next, the A/D conversion circuit 3 converts the input signal from analog to digital, and stores it in the field memory A.
4. Field memory B5. It is input into field memory C6. The memory control circuit 7 writes the contents of one field (for example, right eye information R'1) every three fields from the input signal shown in FIG. 2a to the field memory A4 as shown in FIG. After 1.6 fields, data is read twice from field memory A4 at twice the writing speed. Similarly, field memo 1JB5 is shown in Figure 2 d.
The next field (left eye information L'2) written in field memory A4 is written as shown in FIG. 2, and read out twice after 1.5 fields as shown in FIG. 2e. In the field memory C6, the right eye information R'3 is written as shown in the second rotation and read out twice as shown in FIG. 2q, and this process is repeated every three fields. From now on, as shown in the second diagram, R'1, L'
2, R'1, L'2, and R'3 are sequentially output. This signal is converted from digital to analog signal by the D/A conversion circuit 8 and inputted to the display 9.
The beam is deflected and projected by the double-speed synchronization signal output from the double-speed synchronization generating circuit 2. In addition, the shutter glasses control circuit 1o, which is turned on and off alternately on the left and right sides by a liquid crystal or a machine, is synchronized with the right eye information displayed as shown in Figure 2i from the previous input signal and the output of the double-speed synchronization generation circuit 2. death,
A control signal for the right-eye shutter glasses 11 that switches at twice the field speed and a control signal for the left-eye shutter glasses 12 that is an inversion of the control signal for the right-eye shutter glasses as shown in FIG. 2j are generated. .

In this way, a flicker-free stereoscopic image is reproduced on the display through the shutter glasses.

Effects of the Invention As described above, the present invention uses three field memories, writes one field to each field memory every three fields, and when reading, reads twice at twice the speed of writing, thereby creating a three-dimensional image. One field of the signal is reproduced in the time H, and by doubling the switching speed of the shutter glasses accordingly, it is possible to reproduce a stereoscopic image with no noticeable flicker.

[Brief explanation of the drawing]

FIG. 1 is a rotational diagram of a three-dimensional image reproducing device according to an embodiment of the present invention, FIG. 2 is an operation waveform diagram of FIG. 1, FIG. 3 is a diagram of the conventional example, and FIG. 1...Video signal input terminal, 2...Double speed synchronization creation circuit, 3...
...A/D conversion circuit, 4...Field memo IJA, s...Field memory B, 6
...Field memory C17...Memory control circuit, 8...D/A conversion circuit, 9...
... Display, 10 ... Shutter glasses control circuit, 11 ... Shutter glasses for left eye, 1
2...Shutter glasses for right eye, 21...
...Object, 22...Left eye, 23...Right eye, 24...Camera A, 26...Camera B0 Name of agent Patent attorney Medium Toshio O and 1 others
Figure 3
1-Each person's power play 9-・-Jidosu 7-Leu

Claims (1)

[Claims] three first to third field memories, a memory control circuit that controls the first to third field memories, a double-speed synchronization generation circuit that creates a double-speed synchronization signal, and ON, O
Consists of left-eye shutter glasses that are FF-controlled and right-eye shutter glasses that are controlled to turn on and off in the opposite way to the left-eye shutter glasses, and left-eye information and right-eye information are alternately displayed for each field. Connect the input video signal that switches to the first to third field memories, write one field at a time, read out twice at twice the writing speed, and read out the read information (left) of the field memory. A stereoscopic image reproducing device that controls the shutter glasses for the left eye and the shutter glasses for the right eye.