JPH08249493A - Stereoscopic imager - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To display characters and symbols in a three-dimensional space on a stereoscopic image device. [Structure] A memory 101 for storing in advance the characters and symbols used for display, a memory 1 for registering the characters and symbols to be actually displayed
02 and the position information memory 106 for designating the display position of the displayed character / symbol, and the display signal processing circuit 103 makes the position information of the character / symbol different between the left image and the right image. The character symbol is occupied at the predetermined position above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image device such as a medical device, an art appreciation, or a game device, which is used for the purpose of accurately grasping the shape of an object and obtaining a sense of reality.

[0002]

2. Description of the Related Art In a conventional video device such as a television receiver, information required by an observer such as a selected channel and a state inside the video device is displayed on a screen of a display tube in characters or symbols. are doing. This situation will be briefly described with reference to FIG. The circuit shown here is a circuit for displaying the selected channel at a predetermined position on the display screen in the television receiver.

When a television viewer tunes to a channel, the tuning circuit 804 sends the tuning information to the control circuit 80.
6, and the control circuit 806 controls the character ROM 8
A read signal and an address are given to the ROM so that the corresponding character is read out from the location where the character of the station 08 is stored, the character information about the channel to be displayed is read from the ROM, and the shift register 807 is read.
Set to.

Subsequently, the control circuit 806 controls the deflection circuit 8
Using the horizontal synchronizing signal, the vertical synchronizing signal, and the clock signal supplied from 10, the position on the screen (on the surface of the picture tube 803) on which the character is displayed is determined as the position on the time axis, and the time is determined. Shift register 80
7 to read the character or character string information about the channel and supply it to the superposition circuit 809, superimpose it on the video signal supplied from the video circuit 801 and send it to the picture tube drive circuit 802, and It is sent to the picture tube 803.

The above is an example of displaying the channel information on the surface of the picture tube, but it is conceivable to display various character information on the display screen in addition to the channel information. Therefore, generally, FIG. 7 shows the configuration of a system for displaying characters and symbols on a screen. In this system, the characters and symbols used for displaying are ROM701.
Pre-stored in the RAM and read out as needed
702 is registered.

The characters or symbols to be displayed, which are registered in the RAM 702, are supplied to the display device 707 through the display signal processing circuit 705. At this time, the display signal processing circuit 7 is operated.
In 05, the position on the time axis corresponding to the actual position on the display screen is calculated based on the position information read from the position information memory 706, and the character or symbol to be displayed is read from that position and displayed. Supply to the device 707.

This positioning is performed by using the horizontal and vertical synchronizing signals supplied to the terminal 704 and the clock supplied to the terminal 703 to determine at which position on the screen the character or symbol is read and sent to the display device. It is given as a position on the time axis.

As described above, in order to be able to arbitrarily determine the display position, it is necessary to provide a position information storage memory for storing information designating the display position.

[0009]

In recent years, stereoscopic video devices for stereoscopically displaying a video screen have been developed, but it is naturally conceivable to display characters and symbols in those stereoscopic video devices. Therefore, first, the stereoscopic television image receiving apparatus will be briefly described with reference to FIG. In this image receiving device, the left and right images are displayed on the television screen in a time-division manner, and the left and right images are switched using the liquid crystal glasses to switch the left image to the left eye and the right image to the right eye. To obtain a stereoscopic image.

The operation of this receiver will be described in more detail. In synchronization with the left image and the right image displayed on the screen, infrared rays are transmitted from the transmitter on the television receiver to the shutter switching signal of the liquid crystal glasses. Will be sent.

The remote control signal is received by the receiver attached to the liquid crystal glasses, the left signal or the right signal is decoded, and if the signal is the left signal, the right eye side is controlled to be shielded, and the right signal is controlled. If it is a signal, control is performed so as to shield the left eye side.
As a result, the left image enters the left eye and the right image enters the right eye, so that the desired stereoscopic image can be viewed.

Even in this type of stereoscopic image display device, characters and symbols can be displayed as described above, which will be described below with reference to FIG. As shown in the waveform diagram on the upper left of the figure, the scanning lines on the television screen scan the screen surface from the top to the bottom, and again the screen surface from the top to the bottom is synchronized with the vertical sync signal. Scanning to changes from one screen to the next.

The new screen is scanned from the top to the bottom by horizontal scanning lines, and each horizontal scanning line is switched in synchronization with the horizontal synchronizing signal to become the next scanning line. Therefore,
The vertical position on the screen can be represented by the number of horizontal scan lines, and thus the range of the vertical position can be represented by the number of horizontal scan lines to the number of horizontal scan lines. . This means that it can be grasped by counting the number of horizontal synchronizing signals.

The horizontal position can be represented by the number of clock pulses. If the number of clock pulses to be included in one horizontal period is determined, the position in the horizontal direction is determined by specifying the number of clock pulses to the number of clock pulses.

By the above method, it is possible to display characters and symbols at predetermined positions on the screen even when displaying a stereoscopic image. Then, in the case of a stereoscopic image device,
Since it is composed of two images, the left image and the right image, the characters and symbols are also displayed in each of the two images, and if the positions are different, it is determined as the position in the front-back direction with respect to the screen. appear.

In order to specify the position on the screen of the character or symbol to be displayed, the position information is stored in the storage device in the code format, but in the conventional device, it is stored for one character or symbol. Since there was only one value, the display position on the screen was fixed.

One object of the present invention is to change the positions of characters and symbols to be displayed, and further to move the characters and symbols,
This is to obtain a projection effect such as characters popping out of the screen.

Since the conventional stereoscopic image device described above has only one storage device (one set of left and right) for storing position information for horizontal and vertical scanning, a plurality of characters can be displayed in one screen screen. When displaying symbols and symbols, there is a problem that the positions of those characters and symbols are always fixed at predetermined positions on the screen.

Therefore, another object of the present invention is that when a plurality of characters or symbols are displayed on the same screen screen, each character or symbol can be positioned independently, and further each character or symbol can move independently. It is an object of the present invention to provide a stereoscopic image device that can be displayed on the screen.

[0020]

In order to solve the above-mentioned problems, according to the present invention, a memory storing characters and symbols used for display and characters, character strings, symbols to be actually displayed are registered. A memory, a position information memory that stores position information that specifies the position of characters, character strings, symbols, etc. to be displayed, a horizontal synchronization signal, a vertical synchronization signal, a clock signal, and a character that is displayed based on the position information, A display signal processing circuit for positioning a character string, a symbol, etc. at an actual position on a screen, wherein the position information memory has at least one set of a left image position information storage region and a right image position information storage region. Provided is a stereoscopic image device including a position information storage area for an image, and by making the values of left and right position information different from each other, a character, a character string, a symbol, etc. can be displayed at an arbitrary position in a three-dimensional space. In the position information memory, one set of position information for the left and right images is provided, a plurality of sets is provided, and one set of memory area is associated with each display unit of characters and symbols, and the position information is stored. Let

[0021]

According to the above configuration, the positions of the characters and symbols on the left-eye image and the positions of the characters and symbols on the right-eye image can be registered separately, so that the characters and symbols can be registered in any space of the stereoscopic image. Can be displayed. Further, when there are a plurality of characters or symbols to be displayed, it is possible to position or move each character or symbol independently.

[0022]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows the configuration of an embodiment of the present invention. According to the system shown in the figure, the configuration information of characters and symbols used for display is stored in the ROM 101.

Characters and symbols to be actually displayed in a certain program are read from the ROM 101 and stored in the RAM 102.
Be registered with. The characters and symbols registered in the RAM 102 are read by the display signal processing circuit 103 at a time corresponding to the position on the screen where the characters and symbols are displayed, and sent to the display device 107 such as a CRT.

The display position is stored in the position information memory 106. The position information memory 106 is composed of a position storage area for a left image and a position storage area for a right image forming a stereoscopic image, and these two areas are set as a display position for one character string. In order to spatially position different character strings independently of each other, a plurality of sets of this position information storage area are provided.

The display signal processing circuit 103 performs processing for adding information on the position where the character or symbol is displayed to the character or symbol. The display signal processing circuit 103 receives the L / R discrimination signal supplied to the input terminal 108 and determines whether the current image is the left-eye image or the right-eye image. If it is the right image, the position information for the right image of the character or symbol to be read is read from the position information memory 106 for the right image.

Input terminal 105 of display signal processing circuit 103
Is supplied with a clock signal CLK, and the input terminal 104 is supplied with horizontal and vertical synchronization signals.
When the horizontal position and the vertical position on the screen are the positions of the character or symbol to be displayed, the display signal is output.

FIG. 2 exemplifies a case where the characters "video" and a menu screen are displayed on the screen of the display device. Now, the display of the character "video" will be described. In the figure, (a1) shows the position of the character on the screen of the left-eye image, and (b1) shows the position of the character on the screen of the right-eye image. . (A1) and (b1)
You will notice that the position of the letters "video" is different (a1 ≠ b1) when comparing This is
The word "video" is not visible on the screen, as it will be seen in front of or behind the screen, as will be explained in more detail below.

Similarly, considering the menu screen, in FIG. 2A, the horizontal position (a2) of the left image and the horizontal position (b2) of the right image are equal (a).
2 = b2), so this menu image is visible on the screen. However, in the figure (B), the position (a3) of the left image is larger (a3) than the position (b3) of the right image.
3> b3), and in this state, as will be described later, the menu image can be seen at the front position.

FIG. 3 illustrates this situation, where the menu image (A) is visible on the screen of the display, while (B) is visible in front of the screen. The position in the front-rear direction depends on the positional relationship between the left image and the right image, and is determined by the above-described position information (the distance from the left end of the screen is a for the left image and b for the right image). Therefore, when the value of (a) is gradually changed from (a2) to (a3) and the value of (b) is changed from (b2) to (b3), the menu image appears to pop out forward.

FIG. 4 shows the relationship between the positions of the left and right eyes, the positions of the left and right images on the screen, and the positions where the images can be seen. In the figure, if the left image and the right image are at the same position as indicated by L2 and R2, as shown in (a),
The image is visible on the screen surface.

As shown by L1 and R1 in FIG.
If the position L1 of the left image is to the left of the position R1 of the right image, the image appears at the position (c) behind the screen. On the contrary, as indicated by L3 and R3, if the position L3 of the left image is on the right side of the position R3 of the right image, the image appears at the position (b) in front of the screen.

Further, in FIG. 4, the image (d) given at the position L4 of the left image and the position R1 of the right image appears to the right of the above-mentioned image (b), which means that L4 is larger than L3. It is on the right and R1 is also on the right of R3. Thus, it goes without saying that the position of the character or symbol to be displayed in the horizontal direction can also be moved.

In the above description, the spatial position of one image (character string or symbol) has been mainly described. However, according to the stereoscopic image device of the present invention,
By providing a position information memory that stores position information independently for a plurality of character or symbol information, a plurality of images can be positioned and moved independently.

[0034]

According to the present invention, one set of left and right storage areas for storing the positions of characters and symbols to be displayed on the screen are provided for each display unit, and the display position is changed independently for each display unit. Thus, it is possible to display a character or symbol at an arbitrary spatial position and move the displayed character and / or symbol independently in space.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a stereoscopic image device of the present invention.

FIG. 2 is an explanatory diagram showing a positional relationship between left and right images.

FIG. 3 is a schematic diagram showing a screen stereoscopic display.

FIG. 4 is an explanatory diagram illustrating a positional relationship between images.

FIG. 5 is an external view of a device showing an outline of a stereoscopic video device.

FIG. 6 is an explanatory diagram for explaining the theory of positioning a displayed character or symbol.

FIG. 7 is a configuration diagram of a character or symbol display system.

FIG. 8 is a system configuration diagram of channel display in a television receiver.

[Explanation of symbols]

 101 read-only memory ROM 102 occasional write / read memory RAM 103 display signal processing circuit 104 horizontal / vertical synchronization signal input terminal 105 clock input terminal 106 position information memory 107 display device 108 left / right discrimination signal input terminal

Claims (3)

[Claims] 1. A memory for storing characters and symbols used for display, a memory for registering actually displayed characters, character strings, symbols, etc., and a position for designating the positions of the displayed characters, character strings, symbols, etc. A position information memory that stores information, and a display signal processing circuit that positions horizontal synchronization signals, vertical synchronization signals, clock signals, and characters, character strings, symbols, etc. to be displayed based on the above position information at actual positions on the screen. And a position information memory including at least one set of a left image position information storage area and a right image position information storage area, wherein the left and right position information values are different, A stereoscopic image device capable of displaying characters, character strings, symbols, etc. at arbitrary positions in a three-dimensional space. 2. The stereoscopic image device according to claim 1, wherein a display position of a character, a character string, a symbol, or the like is moved as a plurality of values in which the value of the position information stored in the position information memory is gradually changed. A stereoscopic image device designed to give a moving motion. 3. The stereoscopic image device according to claim 1, wherein the position information memory is provided in a plurality of sets corresponding to respective display units of characters to be displayed, character strings, symbols, etc. A stereoscopic image device that can change the position independently for each unit.