JPH01164193A - Stereoscopic picture signal reproducing device - Google Patents

Abstract

PURPOSE:To enable a monitor to be visible without using a liquid crystal glasses by only inputting either signal of field stereoscopic picture signals and inputting a false synchronizing signal into field not to be inputted. CONSTITUTION:A mode change switch 11 is connected to a plain picture mode M side. An even field picture signal and an odd number field picture signal for a stereoscopic picture are alternately inputted successively, a field change switching 13 is switched whenever a synchronizing signal is detected by a synchronizing signal detection circuit 12, when it is switched to the even number field picture signal for a left eye vision, connected to a signal outputting side SO, next switched to an ground side G by a synchronizing signal to be outputted and the odd number field picture signal for a right eye vision flows to the ground side G. In this case, the false synchronizing signal is outputted from a false signal output circuit 14 after the even number field picture signal. Thus, since only the even number field picture signal is reproduced in a monitor 15, a picture can be enjoyed without putting on a liquid crystal glasses for stereoscopic picture.

Description

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

(Prior Art) In recent years, audio/visual equipment has been widely used, and there are a wide variety of equipment.

For example, conventional color televisions are known as visual devices. In recent years, there has been a system that outputs three-dimensional images using the above-mentioned color television.

The following systems are available for reproducing such stereoscopic images.

FIG. 5 shows an example of a conventional stereoscopic image reproduction system, and this device is composed of a CCD stereoscopic camera 1, a stereoscopic adapter system, and a monitor 3.

The CCD stereoscopic camera 1 uses a right camera head 4a, a left camera head 4b corresponding to the right and left eyes of a human, and each image signal (second 6 (d) and (e)) are sequentially switched in 1/60 second increments based on the synchronizing signal and distributed to even fields and odd fields, and the input signal switching circuit 5 outputs The image signal processing circuit 6 includes an image signal processing circuit 6 that performs processing such as recording and reproducing image signals (shown in FIG. 6(f)).

Moreover, the three-dimensional adapter system 2 includes a three-dimensional adapter 7,
It consists of liquid crystal glasses 8. The three-dimensional adapter 7 alternately opens and closes the liquid crystal shutter for the right eye and the liquid crystal shutter for the left eye of the liquid crystal glasses 8 based on the synchronization signal of the image signal (FIG. 6(f)) output from the image signal processing circuit 6. .

In this system, the CCD stereoscopic camera 1 outputs an image signal for a stereoscopic image outputted from the image signal processing circuit 6 to the monitor 3, and also outputs a synchronization signal to the stereoscopic adapter 7. As a result, the liquid crystal shutters of the liquid crystal glasses 8 are opened and closed alternately, that is, when the screen displayed on the monitor 3 is an image for the right eye, the right daily liquid crystal shutter is opened and the left eye liquid crystal shutter is closed. Further, when the screen displayed on the monitor 3 is an image for the left eye, the liquid crystal shutter for the left eye is opened and the liquid crystal shutter for the right eye is closed.

Therefore, a three-dimensional image can be seen due to the human binocular parallax and the afterimage effect of the eyes.

By the way, in such conventional stereoscopic image reproduction systems, the emphasis is only on viewing stereoscopically, so viewing without a stereoscopic adapter and LCD glasses is not considered, so it is difficult to view the monitor without a stereoscopic adapter. This results in an image that appears to be doubly shifted, making it extremely difficult to see. Therefore, it is necessary to always wear liquid crystal glasses, and when a plurality of people enjoy stereoscopic images, there is a problem that liquid crystal glasses must be prepared for each person. Furthermore, since each of the camera heads 4a and 4b of the stereoscopic camera 1 utilizes human binocular parallax, there is a problem in that when viewing a monitor, the effect of the stereoscopic image is weak unless the monitor is viewed from in front of the monitor as much as possible.

(Problems to be Solved by the Invention) As described above, the conventional stereoscopic image reproduction system requires the use of liquid crystal glasses, so there is a problem that many people cannot enjoy the images.

The present invention is intended to solve the above-mentioned conventional problems,
An object of the present invention is to provide a three-dimensional image signal reproducing device capable of outputting a two-dimensional image so that the three-dimensional image can be viewed without liquid crystal glasses.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention converts input image information into one field image signal for 3D and the other field image signal for 3D. A stereoscopic image signal reproducing device that displays a stereoscopic image by alternately inputting the image mode includes a selection circuit for selecting the image mode or the two-dimensional image mode, and a selection circuit that selects the two-dimensional image mode from the two-dimensional image mode. a synchronizing signal detection circuit that detects a synchronizing signal in the image information when selected; and inputting the one field stereoscopic image signal and inputting the other field stereoscopic image every time the synchronizing signal is detected by the synchronizing signal detecting circuit. a signal input switching circuit that alternately performs an operation of not inputting a signal; and a pseudo signal input switching circuit that outputs a signal including at least a pseudo synchronization signal when the signal input switching circuit performs an operation of not inputting the other field stereoscopic image signal. It is equipped with a signal output circuit.

(Function) In the present invention, only one of the field three-dimensional image signals is input, and a pseudo synchronization signal is input to the field that is not input, and these signals are output. Therefore, a two-dimensional image is output. This makes it possible to view the monitor without using liquid crystal glasses.

(Example) Hereinafter, an example of the stereoscopic image signal reproducing apparatus of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a stereoscopic image signal reproducing apparatus according to an embodiment of the present invention.

In the same figure, this stereoscopic image signal reproducing device includes a mode changeover switch 11 which is a selection circuit, a synchronization signal detection circuit 12
, a field changeover switch 13 which is a signal input changeover circuit.
, and a pseudo signal output circuit 14. Further, numeral 15 indicates a monitor which inputs an image signal and displays a predetermined display.

The mode changeover switch 11 is for switching the image output mode, and is configured to switch between the three-dimensional image mode side S (STEREO) and the two-dimensional image mode side M by a predetermined operation from the outside.
(MONORAL).

When the planar image mode is selected by the mode changeover switch 11, the synchronization signal detection circuit 12 detects a signal between a stereoscopic even field image signal and a stereoscopic odd field image signal that constitute the input stereoscopic image signal. Detect synchronization signal.

The field changeover switch 13 switches between the signal output side So and the ground side G each time a synchronization signal is detected by the synchronization signal detection circuit 12 described above.

The pseudo signal output circuit 14 outputs one field image signal inputted to the monitor 15 when the field changeover switch 13 described above is connected to the signal output side SO, and also outputs one field image signal inputted when the field changeover switch 13 is connected to the ground side G. When this occurs, a pseudo synchronization signal is output to the monitor 15 side. Therefore, when outputting only the even field image signal to the monitor 15 side, the even field image signal inputted when the field changeover switch 13 is connected to the signal output side SO by the synchronization signal is outputted to the monitor 15; When the next synchronization signal is detected following the signal, the field changeover switch 13 is connected to the ground side G, and a pseudo synchronization signal is output to the monitor 15 side when an odd field image signal would normally be output.

Next, the operation of the stereoscopic image signal reproducing apparatus configured as described above will be explained.

First, when reproducing a stereoscopic image, the mode changeover switch 11 is switched to be connected to the stereoscopic image mode S side. When a stereoscopic image signal (not shown) is input from, for example, a stereoscopic camera, a stereoscopic even field image signal and a stereoscopic odd field image signal of the image signal are alternately and sequentially input, and the monitor 15 is output to. Furthermore, a synchronizing signal that is output between the above-mentioned even and odd field image signals for stereoscopic is output to a stereoscopic adapter (not shown), whereby liquid crystal shutters of liquid crystal glasses (not shown) are alternately opened and closed. For example, if the even field image signal is for left viewing and the odd field image signal is for left viewing, when the synchronization signal before the even field image signal is output, the right eye side of the liquid crystal shutter opens and the left eye side closes. Then, when the next synchronization signal (the synchronization signal before the odd field image signal) is output, the right eye side of the liquid crystal shutter closes and the left eye side opens. Thereby, a three-dimensional image can be viewed due to the human binocular parallax and the afterimage effect of the eyes.

Next, the case of reproducing a planar image will be explained. - When reproducing a flat image, for example, when the user is tired of wearing liquid crystal glasses, or when a large number of people want to enjoy the reproduced image.

In this case, first, the mode changeover switch 11 is switched to be connected to the planar image mode M side. When a 3D image signal from, for example, a 3D camera (not shown) is input, a 3D even field image signal and a 3D odd field image signal of the image signal are alternately and sequentially input. As a result, the synchronization signal between each image signal is detected by the synchronization signal detection circuit 12, and each time the synchronization signal is detected, the field changeover switch 13 is alternately switched to the signal output side SO and the ground side G for connection. be done. This switching operation of the field changeover switch 13 is carried out, for example, when the even field image signal is for left viewing and the odd field image signal is for left viewing, as shown in FIG. 2(a). When an even field image signal for left vision is generated, it is connected to the signal output side SO, and this even field image signal passes through the pseudo signal output circuit 14 and is output, and then is switched to the ground side G by the output synchronization signal. The left-view odd field image signal flows to the ground side G. Also, at this time, a pseudo synchronization signal is output from the pseudo signal output circuit 14 after the above-mentioned even field image signal. Therefore, as for the image signals outputted to the monitor 15, only even field image signals are outputted, as shown in FIG. 2(b).

Therefore, since only the even field image signals are reproduced on the monitor 15, a two-dimensional image is output, and the image can be enjoyed without having to wear liquid crystal glasses for stereoscopic images. It becomes possible to enjoy it.

Next, other embodiments of the present invention will be described.

FIG. 3 is a block diagram showing the configuration of a stereoscopic image signal reproducing apparatus according to another embodiment of the present invention. In FIG. 3, parts common to those in FIG. 1 are given the same reference numerals and redundant explanations will be omitted.

In this embodiment, an image signal recording/reproducing circuit 16 is provided in the pseudo signal output circuit 14, and an output changeover switch 17 is connected between the pseudo signal output circuit 14 and the monitor 15.

The image signal recording and reproducing circuit 16 detects a field image signal passing through the pseudo signal output circuit 14, and includes an A/D converter 18 that converts the detected signal into a digital signal, and a field that stores the converted digital signal. memory 1
9 and a synchronization signal detection circuit 12, and outputs the digital signal stored in the field memory 19 based on the detection signal.

and a D/A converter 21 that converts the read digital signal into an analog signal and outputs it to the output changeover switch 17.

Further, the output changeover switch 17 is linked with the field changeover switch 13, and when the field changeover switch 13 is connected to the signal output side SO, it connects the pseudo signal output circuit 14 side and the monitor 15. , when connected to the ground side G, the image signal recording/reproducing circuit 16 and the monitor 15 are connected.

In this embodiment, when reproducing a stereoscopic image, the first
It operates similarly to the illustrated embodiment.

Furthermore, when reproducing a plane image, the following operation is performed.

First, the mode changeover switch 11 is switched to be connected to the planar image mode M side. When a 3D image signal from, for example, a 3D camera (not shown) is input, a 3D even field image signal and a 3D odd field image signal of the image signal are alternately and sequentially input. As a result, the synchronization signal between each image signal is detected by the synchronization signal detection circuit 12, and each time the synchronization signal is detected, the field changeover switch 13 is alternately switched between the signal output side SO and the ground side G. Connected. This switching operation of the field changeover switch 13 is carried out, for example, when the even field image signal is for left viewing and the odd field image signal is for left viewing, as shown in FIG. 4(a). When it is an even field image signal for left viewing, it is connected to the signal output side SO, and this even field image signal is output through the pseudo signal output circuit 14 as a bus.

Note that the signal at this time is shown in FIG. 4(b).

Also, at this time, an even field image signal is detected by the image signal recording/reproducing circuit 16, and this even field image signal is converted into a digital signal by the A/D converter 18 and stored in the field memory 19.

Next, the field changeover switch 13 is switched to the ground side G by the output synchronization signal, and the odd field image signal for left viewing flows to the ground side G. At this time, the detection signal of the synchronization signal detection circuit 12 is outputted to the memory readout section 20, and the digital signal stored in the field memory 19 is outputted to the D/A conversion section 21 and converted into an analog signal (even field image signal). and output selector switch 1
7. Therefore, as shown in FIG. 4(c), the image signal output to the monitor 15 is a frame in which the same even field image signal is repeated twice.

Therefore, on the monitor 15, a frame image in which the same even field image signal is repeated twice is reproduced, so a two-dimensional image with good image quality is output, and there is no need to wear liquid crystal glasses for stereoscopic images. Images can be enjoyed even by a large number of people.

In each of the above-mentioned embodiments, the case where a stereoscopic image signal from a stereoscopic camera is input has been described, but the present invention is not limited to these embodiments, and may be applied to other devices that output stereoscopic image signals. good.

Furthermore, the stereoscopic image signal reproducing device of the present invention may be configured as an independent device and connected between a device that outputs stereoscopic image signals and a monitor, or it may be built into a device that outputs stereoscopic image signals or a monitor. It may be configured as follows.

[Effects of the Invention] As explained above, the stereoscopic image signal reproducing device of the present invention has the following effects:
It is possible to output a two-dimensional image so that the three-dimensional image can be viewed even without liquid crystal glasses.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the configuration of a stereoscopic image signal reproducing device according to an embodiment of the present invention, and FIGS. 2(a) and (b)
is a diagram for explaining the image signal of FIG. 1, FIG. 3 is a block diagram for explaining the configuration of a stereoscopic image signal reproducing device according to another embodiment of the present invention, and FIGS. ), (c) are diagrams for explaining the image signals in FIG. 3, FIG. 5 is a block diagram for explaining an example of a conventional three-dimensional image reproduction system, and FIGS. 6 (d), (e), (f) is a diagram for explaining the image signal in FIG. 5. 11...Mode changeover switch, 12...Synchronization signal detection circuit, 13...Field changeover switch, 14...
- Pseudo signal output circuit, 15... Monitor, 16... Image signal recording/reproducing circuit, 17... Output selection switch. Applicant Toshiba Corporation Toshiba Audio/Video Engineering Co., Ltd. Agent Patent Attorney Sasu Suyama - Figure 1, Figure 2, Page 4

Claims (1)

[Claims] (1) In a stereoscopic image signal reproducing device that displays a stereoscopic image by alternately inputting one field image signal for stereoscopic and the other field image signal for stereoscopic from input image information, the image output mode is set to stereoscopic. a selection circuit for selecting an image mode or a planar image mode; a sync signal detection circuit for detecting a sync signal in the image information when the planar image mode is selected by the selection circuit; and a sync signal detection circuit for detecting a sync signal in the image information. a signal input switching circuit that alternately inputs the one field stereoscopic image signal and de-inputs the other field stereoscopic image signal every time a synchronization signal is detected; A stereoscopic image signal reproducing device comprising: a pseudo signal output circuit that outputs a signal including at least a pseudo synchronization signal when an operation without inputting a field stereoscopic image signal is performed.