JPS6362495A - Stereoscopic television device - Google Patents

Abstract

PURPOSE:To enable the suitable stereoscopic recognition of a displayed picture irrespective of the parallax in an original picture is too large or too small by delaying the video signal of a picture either for a left eye or for a right eye, and correcting the parallax at the display of a stereoscopic vision. CONSTITUTION:At first, an object to be delayed and a delay Amount are set through in external inputting means 10. The object to be delayed is either a left picture or a right picture. A selection signal SEL and a delay amount signal C1 are inputted to a delay control circuit 9 by setting the object to be delayed and the delay amount, and by this input, the delay control circuit 9 outputs a control signal C2. The control signal C2 is taken in by a delay circuit 8, and the delay circuit 8 outputs a delayed video signal D2, in which the video signal D1 is delayed by TAU depending on the C2. After the signal D2 is amplified by a video signal amplifier circuit 2, it is inputted to the displaying means 5, and is served for displaying the picture for the stereoscopic vision.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a stereoscopic television device.

(Prior Art) One of the means for three-dimensionally recognizing an image of a subject is, for example, P L Z T (Pead Lanthanum).
2irc.

There is a method of using a glass element or a liquid crystal in the eyeglass portion. FIG. 7 is a block diagram of a conventional stereoscopic television apparatus. In the figure, an input composite video signal S is separated into a video signal, a vertical synchronization signal @V, and a horizontal synchronization signal H by a synchronization separation circuit 1. In addition, V and H pass through a video amplification circuit 2, a vertical deflection circuit 3, and a horizontal deflection circuit 4, respectively, to display means (CRT display).
given to 5.

On the other hand, the shutter control circuit 6 takes in the horizontal and vertical synchronization signals, determines whether the field is a right image or a left image, and provides a control signal to the stereoscopic glasses 7.

In response to this control signal, the left and right shutters of the stereoscopic glasses 7 are alternately opened and closed, thereby enabling stereoscopic recognition of the displayed image.

By the way, the right-eye image and the left-eye image in the original image provided for stereoscopic display are obtained at a certain angle (that is, with a certain parallax) with respect to the shadow object. Then, such an original image will be faithfully displayed on the CRT display.

For this reason, depending on the observer, the parallax of the original image may be too large or too small due to individual differences, making it difficult to achieve proper stereoscopic viewing.

(Problems to be Solved by the Invention) As described above, in the conventional apparatus, a problem arises in that the parallax of the original image is inappropriate depending on the observer, making it difficult to achieve proper stereoscopic viewing.

This invention was made in view of the above circumstances, and its purpose is to provide a three-dimensional television that can perform appropriate three-dimensional recognition of displayed images regardless of whether the parallax in the original image is too large or too small. The goal is to provide equipment.

[Structure of the Invention] (Means for Solving Problems) The present invention provides a parallax correction means for correcting parallax in a stereoscopic display by delaying a video signal of a left-eye image or a right-eye image; and external input means for inputting the amount of delay of the video signal.

(Function) The parallax correction means delays the video signal of the left-eye image or the right-eye image according to the delay amount input by the external input means, and performs parallax correction in stereoscopic display.

This enables appropriate three-dimensional recognition of the displayed image regardless of whether the parallax in the original image is too large or too small.

(Example) Hereinafter, the present invention will be specifically explained with reference to Examples.

FIG. 1 is a block diagram of a three-dimensional television apparatus which is an embodiment of the present invention. The device of this embodiment is a conventional device (Fig. 7).
The difference is that the external input means 10 and the parallax correction means 2
It is a point with 0.

This external input means 10 is for inputting the amount of delay for the left eye image (referred to as left image) or the right eye image (referred to as left image), and is provided with various switches provided on the operation panel of the device of this embodiment. Consists of etc.

The parallax correction means 20 performs parallax correction in stereoscopic display by delaying the left image or the video signal of the left image according to the amount of delay inputted by the external input means 10, and is configured to correct parallax in stereoscopic display. It has a control circuit 9. The delay circuit 8 outputs a delayed video signal D2 by delaying the video signal D1 according to the control signal C2, and the delay control circuit 9 receives the selection signal SEL and the delay amount signal inputted from the external input means 10. A control signal C2 is generated based on C1.

Next, details of the delay circuit 8 will be explained with reference to FIG. This delay circuit 8 includes an A/D converter that converts the video signal D1 into a digital signal, a delay element group 12 consisting of a plurality of delay elements each having a different delay time, and the A/D converter that converts the video signal D1 into a digital signal. D converter 11. There are a plurality of delay elements, a selector 13 that selects the output of L, and a D that converts the selected output of this selector 13 into an analog signal.
/A converter 14.

Next, the operation of the above configuration will be explained with reference to FIG. 3 as well. FIG. 3 shows the operation timing of the device of this embodiment, where ■ is the vertical synchronization signal, Dl is the output of the synchronization separation circuit 1, C1 is the delay amount signal, C2 is the control signal, H is the horizontal synchronization signal, and Dl is a delayed video signal.

A delay target and a delay amount are set via the external input means 10. The objects to be delayed are the left image and the left image (or the first and second fields), and it is up to the observer to select which one. A selection signal @SEL and a delay amount signal @C1 are input to the delay control circuit 9 according to the settings of the delay target and the delay m. S.E.L., C.
1, the delay control circuit 9 outputs a control signal C2.

This C2 is taken into the delay circuit 8, and the delay circuit 8 delays the video signal D1 by τ according to this C2 and outputs the delayed video signal D2.

That is, after A/D converting the video signal D1, it is input to the delay element group 12, the selector 13 selects the output of the delay element group 12, and this is D/A converted to obtain the delayed video signal D2. ing. For example, when the left image is selected as a delay target by the external input means 10,
The left image video signal is selected by the selector 13 without passing through the delay element group 12, and is input to the video amplifier circuit 2 via the D/A converter 14. A delay element corresponding to the delay amount C1.

The signal is input to the video amplification circuit 2 via L.

FIG. 3 shows the timing in this case.

The delayed video signal D2 is amplified by the video amplification circuit 2 and then input to the display means 5, where it is provided for image display for stereoscopic viewing. FIG. 4 5a is a display example before parallax correction, and FIG. 4b is a display example after parallax correction is performed by delaying the left image by τ.

In this way, this embodiment has the external input means 10 and the parallax correction means 20, and the parallax correction means 20 adjusts the left image or left image video signal according to the amount of delay inputted by the external input means 10. Since the parallax correction in the stereoscopic display is performed by delaying the parallax in the stereoscopic display, appropriate stereoscopic recognition of the displayed image is possible regardless of whether the parallax in the original image is too large or too small.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, the video signal D1 is delayed after being converted into a digital signal, but a delay circuit may be configured as shown in FIG. 5, 8A, and D1 may be delayed in the form of an analog signal. .

Further, as shown in FIG. 6, the video signal D1 is taken in,
A stone statue/left image separation circuit 21 is provided to separate the stone statue and left image.
The image signals of the stone statue and the left image may be individually delayed. In this case, the delay elements Ll, D, L
2 constitutes a parallax correction means, and a delay element Ll, Ll
, D, variable resistor VL1, V that sets the delay amount of L2
L2 constitutes external input means. With this configuration, there is an advantage that the delay amount of the video signal can be continuously adjusted by VLt and VL2. Note that in this configuration, both the left image field and the left image field can be shifted.

Furthermore, in the above embodiment, the case where stereoscopic viewing is performed using stereoscopic glasses using a PLZT element or the like as an electronic shutter has been described. It is also possible to perform stereoscopic viewing by wearing polarized glasses with different 90'l directions for the right and left eyes.Also, the color tone can be changed for each field and the color matching the color tone can be converted to match the field. It is also possible to separate the left and right images using a filter and perform stereoscopic viewing. It goes without saying that the present invention can be applied to stereoscopic television apparatuses using such various systems.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a stereoscopic television device that can perform appropriate stereoscopic recognition of a displayed image regardless of whether the parallax in the original image is too large or too small. Can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a detailed block diagram of the main parts of the device of this embodiment, FIG. 3 is an operation timing diagram of the device of this embodiment, and FIG. 4 is a parallax diagram. FIGS. 5 and 6 are block diagrams showing modified examples of the present invention, and FIG. 7 is a block diagram of a conventional device. 10... External input means, 20... Parallax correction means. 8-way singing times ζ Part 2 Zujo Nariya

Claims (1)

[Claims] In a 3D television device that enables 3D recognition of a displayed image by alternately displaying an image for the left eye and an image for the right eye, the video signal of the left eye image or the right eye image is delayed, thereby realizing 3D recognition. A stereoscopic television apparatus comprising: parallax correction means for correcting parallax in a visual display; and external input means for inputting a delay amount of the video signal.