JPH0879802A - Stereoscopic image display device - Google Patents

Abstract

PURPOSE: To provide a stereoscopic image display device by which presence of a video image is experienced by displaying characters representing a command mode or the like matching a stereoscopic image stereoscopically. CONSTITUTION: A synchronizing signal detection circuit 12 detects a synchronizing signal for a left eye video signal and a right eye video signal and gives a detection output to a control section 3, which discriminates whether or not the signal is a stereoscopic video signal. In the case of the stereoscopic video signal, in the case of a command of various modes from the control section 3, a character signal generating circuit 4 generates a character in response to the command mode and signal delay circuits 5, 6 conduct predetermined delay and mix the delayed signal to the video signal. Thus, the command is displayed stereoscopically by displaying the characters deviated in the horizontal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image display device capable of selectively displaying one of a stereoscopic image and a flat image.

[0002]

2. Description of the Related Art Conventionally, as a stereoscopic image display device capable of switching and displaying a stereoscopic image and a planar image, there is one disclosed in Japanese Patent Application Laid-Open No. 62-209992.

However, in such a stereoscopic image display device, whether the currently displayed image is a stereoscopic image,
It is difficult to recognize whether it is a flat image.

Therefore, when the display device is displaying a flat image, the observer searches for an appropriate viewing position where the stereoscopic image can be satisfactorily observed, or wears special glasses for observing the stereoscopic image. You may wear it or perform extra acts.

On the contrary, when the display device is displaying a stereoscopic image, the observer thinks that a flat image is being displayed, and does not observe the image at an appropriate position or wear special glasses. There are times when you observe an unclear image when observing the image.

As described above, as means for making the observer recognize what is being displayed now, that is, a stereoscopic image or a two-dimensional image, for example, a character signal is superimposed on a video signal and displayed on a display device to be displayed to the observer. An invention designed to be recognized is proposed in Japanese Patent Application No. 6-61057 filed by the present applicant.

On the other hand, even in a normal television receiver, it is general that characters are displayed on the display screen to indicate various modes. For example, in the external input mode, the word "video" is displayed on the display screen,
Other modes are displayed similarly.

When the observer commands various modes on the display screen as described above, the commands must be displayed in order to clarify the commands. In particular, it is necessary to display not only when displaying a two-dimensional image but also when displaying the above-described three-dimensional image because various modes are instructed.

However, the character display on this stereoscopic image is
Since the characters are displayed only on a flat surface and the flat characters are displayed in the character display such as the mode display despite the stereoscopic image, only the characters in the stereoscopic image become uncomfortable. Further, there is a drawback that the presence of a flat character in the 3D image impairs the realism of the image.

[0010]

DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned drawbacks, and is achieved by stereoscopically displaying a character indicating a command mode or the like in accordance with a stereoscopic image. It is an object of the present invention to provide a stereoscopic image display device that allows users to experience the realism of images.

[0011]

According to the present invention, in a stereoscopic image display device capable of displaying a stereoscopic image and a planar image on an image display unit, a left eye image signal and a right eye image signal are input,
Character generation means for displaying a stereoscopic image on the image display unit according to the input left-eye image signal and right-eye image signal and adding a character to each of the left-eye image signal and the right-eye image signal A stereoscopic image display device comprising:

Further, in the present invention, the character generating means is
A character signal generating section for generating a character signal to be displayed, and a signal mixing section for mixing the character signal from the character signal generating section with each of the left eye video signal and the right eye video signal and superimposing However, the stereoscopic image display device is also characterized in that the mixed signal is displayed on the image display unit.

According to the present invention, the character generating means comprises a left eye character signal generating section and a right eye character signal generating section, and generates the same character signal.
The stereoscopic image display device is also characterized in that one or both of the character signal for the left eye and the character signal for the right eye is provided with a signal delay unit that delays the character signal for a certain time.

Further, the character generating means mixes a character signal generating section for generating a character signal to be displayed and a character signal from the character signal generating section with each of the left eye video signal and the right eye video signal, In a stereoscopic image display device having a signal mixing section for superimposing and displaying a mixed signal on the image display section, the character generating means has a left eye character signal generating section and a right eye character signal generating section. And a signal delay unit that generates the same character signal and delays the character signal for a certain time in either or both of the left-eye character signal and the right-eye character signal. It is a featured stereoscopic image display device.

Further, the present invention is characterized in that the signal delay section is capable of changing the delay time according to instruction data from another control circuit in the same device or communication means from another device. The image display device, the signal delay unit, by the delay amount adjusting volume provided in the device,
It is also a stereoscopic image display device characterized in that the delay time can be changed.

According to the present invention, the character generating means is
The left-eye character signal generation unit and the right-eye character signal generation unit, and generate character signals of different shapes, to either one of the left-eye character signal and the right-eye character signal, or A stereoscopic image display device, characterized in that both are provided with a signal delay unit for delaying a character signal for a certain time.

Then, the signal delay unit is configured to change the delay time according to instruction data from another control circuit in the apparatus or a communication means from another apparatus, and the stereoscopic image display apparatus is characterized in that Further, the signal delay unit is also a stereoscopic image display device characterized in that the delay time can be changed by a delay amount adjusting volume provided in the device, and further, for the left eye and the right eye. The characters having different shapes can also be changed in shape in synchronization with a change in the delay time of the signal delay unit.

The present invention is also a stereoscopic image display device characterized by adding a shadow of a character to a character for the left eye and a character for the right eye, and a character for the left eye and a character for the right eye. On the other hand, it is also a stereoscopic image display device characterized in that the width of the shadow of the character added to each is made different.

[0019]

According to the present invention, with the above-described configuration, the character generated by the character generation unit is added to the stereoscopic video image signal for the left eye and the video signal for the right eye by shifting the same character with respect to time. It becomes three-dimensional.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a circuit block diagram showing the configuration of a stereoscopic image display device according to an embodiment of the present invention. This device is not only a single device, but is, for example, a television receiver, a VTR (video tape recorder), an LD.
It may be a part of another device built in the P (laser disc player) or the like.

First, in FIG. 1, 1 is a first input terminal for inputting a left-eye video signal for displaying a stereoscopic image, and 2 is a right-eye video signal for displaying a stereoscopic image. The second input terminal 3 is a control unit that controls each block in the device.

Reference numeral 4 denotes a character signal generation circuit for outputting a character signal that superimposes on the left-eye video signal and the right-eye video signal according to an instruction from the control unit 3.
In the present embodiment, the output of the character signal generation circuit 4 is shared by the character signal that is superimposed on the left-eye video signal and the right-eye video signal. Reference numeral 5 is a first signal delay circuit for delaying and outputting the character signal for the left eye of the character signal generating circuit 4. The signal delay circuit 5 is configured so that the delay amount of the signal can be changed according to an instruction from the control unit 3. Reference numeral 6 is a second signal delay circuit for delaying and outputting the right-eye character signal similar to the signal delay circuit 5.

Reference numeral 7 is a first mixing circuit for mixing (superimposing or inserting) the delayed character signal from the first signal delay circuit 5 with the signal input from the first input terminal 1, and 8 is the above-mentioned. For the signal input from the second input terminal 2,
The second mixing circuit mixes (superimposes or inserts) the delayed character signals from the second signal delay circuit 6.

An image display unit 9 displays a stereoscopic image based on the output signals from the output signals from the first and second mixing circuits 7 and 8. Reference numeral 10 is an interface (IF) circuit with another control circuit in the apparatus or with another apparatus, and is configured to transmit the information input from the IF circuit to the control unit 3.

Reference numeral 11 denotes a delay amount adjusting volume, which is provided in the apparatus and is operated by an observer, and the operation content thereof is transmitted to the control unit 3. And 1
Reference numeral 2 denotes a sync signal detection circuit that detects the sync signals of the left-eye video signal and the right-eye video signal to detect that they are stereoscopic video signals.

Next, the operation of the stereoscopic image display device of this embodiment will be described.

First, when displaying a stereoscopic image, a video signal for the left eye is input from the first input terminal 1 and a video signal for the right eye is input from the second input terminal 2. It goes without saying that the stereoscopic video signal may be a stereoscopic video signal from the beginning, or a stereoscopic video signal converted into a stereoscopic video signal.

Then, the control unit 3 includes the synchronization signal detection circuit 1
The detection output that is detected as a stereoscopic video signal is input from 2. At this time, when the observer commands any mode, the IF circuit 10 sends the mode information to the control unit 3.

Then, the control unit 3 controls the character signal generation circuit 4 so as to generate the character signal according to the mode information, and further according to the predetermined stereoscopic degree information for displaying the character. The signal delay amount of the signal delay circuit 5 or 6 is controlled so that on-screen display having a three-dimensional effect is performed.

Thereafter, the signal delay circuit 5 or 6 delays the input character signal by the time instructed by the control unit 3 and sends the delayed character signal to the mixing circuit 7 or 8. The mixing circuit 7 or 8 to which the delayed character signal is input is input to the input left-eye video signal 1
Alternatively, the delayed character signal is mixed with the video signal 2 for the right eye, and the superimposed video signal is sent to the video display unit.

Therefore, FIG. 2 shows a display example according to the present invention. For example, the left-eye video signal and the right-eye video signal output when the character "KU" is displayed on the screen are superimposed. That is, 20 indicates the entire range of the image on the image display unit, 21 indicates the character “” that is displayed on-screen in the right-eye image signal, and 22 indicates the character that is displayed in the left-eye image signal. "Indicates.

The observer is allowed to adjust the delay amount adjusting volume 11
It is possible to control the signal delay amount of the signal delay circuit 5 or 6 according to the adjustment amount by inputting the adjustment amount to the control unit 3 and to supply the adjustment amount to the control unit 3. Control the amount of delay. By adjusting the delay amount,
The degree of stereoscopic effect can be arbitrarily changed by the observer.

Then, the control section 3 judges the display positions of 21 and 22 based on the information from the IF circuit 10 or the operation of the delay amount adjusting volume 11, and controls the signal delay circuits 5 and 6.

Although the signal delay circuits 5 and 6 and the mixing circuits 7 and 8 are provided in the embodiment of the present invention, it is only necessary to provide the signal delay circuit and the mixing circuit for either the left eye or the right eye. Even if there is, it is possible to realize the same three-dimensional display.

When the sync signal detection circuit 12 determines that the signal is not a stereoscopic video signal, the control unit 3 displays the character signal of a normal planar video signal.

By the way, in the above-described embodiment, the character is simply made into a three-dimensional shape, but another embodiment in which a perspective feeling can be obtained by adding a shadow to the character in order to obtain a more three-dimensional effect will be described. To do.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 3 is a circuit block diagram showing the configuration of a stereoscopic image display device of another embodiment. It goes without saying that this device is not only a single device, but may be a part of another device. The same reference numbers as those in the embodiment of FIG. 1 have the same functions. In FIG. 3, the difference from FIG. 1 is that the character signal generator 4a
And 4b and the operation of the control unit 3.

First, in FIG. 3, 1 is a first input terminal for inputting a left-eye video signal for displaying a stereoscopic image, and 2 is a right-eye video signal for displaying a stereoscopic image. This is the second input terminal.

Reference numeral 3 is a control unit for controlling each block in the apparatus.

Reference numeral 4a is a character signal generation circuit for outputting a character signal that superimposes on the left-eye video signal in accordance with an instruction from the control unit 3. Reference numeral 4b is a character signal generation circuit that outputs a character signal that is superimposed on the right-eye video signal similar to 4a. In the present embodiment, the output of the left-eye and right-eye character signal generation circuits 4a and 4b is used as the character signal that is superimposed on the left-eye video signal and the right-eye video signal.

Further, the character signal generating circuits 4a and 4b
Has a function of generating a character in which a shadow (like a character's border seen as a shadow of the character) is added to each character, and the amount of shadow (width of the shadow portion) can be changed by an instruction from the control unit 3. Is configured.

Reference numeral 5 is a first signal delay circuit for delaying and outputting the left-eye character signal of the left-eye character signal generating circuit 4a. The signal delay circuit is configured so that the delay amount of the signal is variable according to an instruction from the control unit 3.

Reference numeral 6 is a second signal delay circuit for delaying and outputting the right-eye character signal similar to the signal delay circuit 5.

A first mixing circuit 7 mixes (superimposes or inserts) the delayed character signal from the first signal delay circuit 5 with the signal input from the first input terminal 1. A second mixing circuit for mixing (superimposing or inserting) the delayed character signal from the second signal delay circuit 6 with the signal input from the second input terminal 1.

Reference numeral 9 is an image display unit for displaying a stereoscopic image based on the output signals from the output signals from the first and second mixing circuits 7 and 8.

Reference numeral 10 is an interface (IF) circuit with another control circuit in the apparatus or with another apparatus, and is configured to transmit the on-screen information input from the IF circuit to the control unit 3.

Reference numeral 11 denotes a delay amount adjusting volume provided in the apparatus and operated by an observer, and the operation content thereof is transmitted to the control unit 3.

Next, the operation of the stereoscopic image display apparatus of this embodiment will be described.

First, when displaying a stereoscopic image, a video signal for the left eye is input from the first input terminal 1 and a video signal for the right eye is input from the second input terminal 2.

The control section 3 inputs the on-screen information from the IF circuit 10. The on-screen information is composed of character information to be displayed on-screen and stereoscopicity information (perspective degree to display a character), and the control unit 3 that has input the on-screen information generates a character signal according to the character information. The character signal generation circuits 4a and 4b are controlled so that the shadow amount is instructed to the character signal generation circuits 4a and 4b so that an on-screen display having a stereoscopic effect according to the stereoscopicity information is performed. It controls the signal delay amount of the delay circuit 5 or 6.

The control unit 3 also controls the delay amount adjusting volume 1
The adjustment amount from 1 is input, the shadow amount is instructed to the character signal generation circuits 4a and 4b according to the adjustment amount, and the signal delay amount of the signal delay circuit 5 or 6 is controlled.

The signal delay circuit 5 or 6 delays the input character signal by the time instructed by the control unit 3 and sends the delayed character signal to the mixing circuit 7 or 8.

The mixing circuit 7 or 8 to which the delayed character signal is input mixes the delayed character signal with the input left-eye video signal 1 or right-eye video signal 2,
The superimposed video signal is sent to the video display unit.

FIG. 4 is a diagram of a video signal for the right eye which is output when the character "I" is displayed on the screen in this embodiment.

In FIG. 4, 20 indicates the entire range of the image on the image display unit, 21a indicates the character "I" displayed on-screen in the image signal for the right eye, and shaded portion 21b indicates the image signal for the right eye. It represents the shadow of the letter "I" displayed on screen.

FIG. 5 is a diagram of the left-eye video signal similar to FIG. 4, in which 22a indicates the character "I" displayed on the screen in the left-eye video signal and the shaded portion 22b indicates the left-eye video signal. The shadow of the letter "I" displayed on-screen in FIG.

21a and 22a indicating the character "I" are characters of the same shape. However, 21a and 22a are different shadows, and in the present embodiment, an example in which the character signal generators 4a and 4b are instructed by the control unit 3 so that the area (width) of the shadow 21b for the right eye is widened. Is shown.

FIG. 6 is a diagram in which the left-eye video signal diagram 4 and the right-eye video signal diagram 5 are superimposed.

The control section 3 operates on the basis of the stereoscopicity information from the IF circuit 10 or the operation of the delay amount adjusting volume 11.
The display positions of 21 and 22 and the shadow amount are determined to generate a character signal, and the signal delay circuits 5 and 6 are also provided.
Control.

In this embodiment, the signal delay circuits 5 and 6 are used.
Although the mixing circuits 7 and 8 are provided, the same stereoscopic on-screen display can be realized by only providing the signal delay circuit and the mixing circuit for either the left eye or the right eye. Is.

[0063]

According to the present invention, an observer can stereoscopically display a mode display of characters and the like displayed on a stereoscopic image, so that the atmosphere of the stereoscopic image is not impaired and there is a sense of reality. You can get stereoscopic images.

Furthermore, the stereoscopicity of the on-screen display can be freely changed inside the device or by another device or the observer, and a richer image expression can be performed.

According to the present invention, by displaying a character character with a shadow, it is possible to express perspective with respect to stereoscopicity, and it is possible to display a character with a more stereoscopic effect.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a character display example of the present invention.

FIG. 3 is a block diagram showing another embodiment of the present invention.

FIG. 4 is a diagram showing a display example of another embodiment of the present invention.

FIG. 5 is a diagram showing a display example of another embodiment of the present invention.

FIG. 6 is a diagram showing a display example of another embodiment of the present invention.

[Explanation of symbols]

 1 Video signal input terminal for left eye 2 Video signal input terminal for right eye 3 Control section 4 Character signal generation circuit 5 Signal delay circuit 6 Signal delay circuit 7 Mixing circuit 8 Mixing circuit 9 Video display section 10 Interface circuit 11 Delay amount adjusting volume 12 Sync signal detection circuit

Claims (12)

[Claims] 1. A stereoscopic image display device capable of displaying a stereoscopic image and a planar image on an image display unit, wherein a left-eye image signal and a right-eye image signal are input, and the input left-eye image signal and right image signal are input. A stereoscopic image display characterized by displaying a stereoscopic image on a video display unit according to an eye video signal, and including a character generation means for adding a character to each of the left eye video signal and the right eye video signal. apparatus. 2. The stereoscopic image display device according to claim 1, wherein the character generation means generates a character signal to be displayed, and a character signal generation part for generating a character signal for the left eye. A stereoscopic image display device comprising: a signal mixing unit that mixes and superimposes each of a video signal and a right-eye video signal, and displays the mixed signal on the video display unit. 3. The stereoscopic image display device according to claim 1, wherein the character generating means includes a left-eye character signal generating section and a right-eye character signal generating section, and generates the same character signal. A stereoscopic image display device comprising a signal delay unit for delaying a character signal for a left eye and a character signal for a right eye, or both of them for a certain time. 4. The stereoscopic image display device according to claim 2, wherein the character generating means includes a left-eye character signal generating section and a right-eye character signal generating section, and generates the same character signal, A stereoscopic image display device comprising a signal delay unit for delaying a character signal for a left eye and a character signal for a right eye, or both of them for a certain time. 5. The stereoscopic image display device according to claim 3 or 4, wherein the signal delay unit is in accordance with instruction data from another control circuit in the device or communication means from another device. A stereoscopic image display device characterized in that a delay time can be changed. 6. The stereoscopic image display device according to claim 5, wherein the signal delay unit changes a delay time by a delay amount adjusting volume provided in the device. apparatus. 7. The stereoscopic image display device according to claim 2, wherein the character generating means includes a left-eye character signal generating section and a right-eye character signal generating section, and generates character signals having different shapes, A stereoscopic image display device comprising a signal delay unit that delays the character signal for a certain time in either or both of the left-eye character signal and the right-eye character signal. 8. The stereoscopic image display device according to claim 7, wherein the signal delay unit can change the delay time according to instruction data from another control circuit in the device or communication means from another device. A stereoscopic image display device characterized by the above. 9. The stereoscopic image display device according to claim 8, wherein the signal delay unit changes the delay time by a delay amount adjusting volume provided in the device. apparatus. 10. The stereoscopic image display device according to claim 7, wherein the characters having different shapes for the left eye and the right eye can change shapes in synchronization with a change in the delay time of the signal delay unit. A stereoscopic image display device characterized by the above. 11. The stereoscopic image display device according to claim 10, wherein a shadow of a character is added to the left-eye character and the right-eye character. 12. The stereoscopic image display device according to claim 11, wherein the widths of the shadows of the characters added to the left-eye character and the right-eye character are different from each other. .