JPH08186847A - 2d/3d video image converter built-in television receiver - Google Patents

Abstract

PURPOSE: To use a field memory in the 2D/3D video image converter as a buffer memory by providing a means storing tentatively character broadcast data to the field memory and a means generating and displaying character.graphic pattern data from character data extracted from the field memory. CONSTITUTION: The television receiver is provided with a high frequency signal reception section 31, a video demodulation section 32, a character signal acquisition section 33, a display clock generating circuit 34, a character generator 35, a character display signal generating section 36, a read write circuit 37, and a video image changeover circuit 38 in addition to the 2D/3D video device. Then character graphic data (teletext data) acquired by the character signal acquisition section 33 are once written in a field memory 11 of the 2D/3D video image converter via the read write circuit 37. Then the character graphic data are extracted from the field memory 11 in a prescribed unit and the character graphic data are converted into a character graphic pattern by the character display signal generating section 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 2D / 3D image converter for converting a 2D image into a 3D image.
The present invention relates to a TV receiver with a built-in D / 3D video conversion device.

[0002]

2. Description of the Related Art Most of the 3D image software used in the 3D image display system, which has been talked about recently, is 3D.
It was created specifically for the 3D video display system. Such three-dimensional video software is generally recorded by picking up a left-eye video and a right-eye video using two cameras. The left and right images recorded in the three-dimensional image software are superimposed and displayed on the display device almost at the same time. Then, the left-eye image and the right-eye image that are displayed in an overlapping manner are separately incident on the left and right eyes of the observer, so that the observer recognizes the three-dimensional image.

By the way, a lot of two-dimensional video software currently exists. Therefore, if a 3D image can be generated from these 2D image software, it is possible to save the trouble of recreating the 3D image software having the same contents as the existing 2D image software from the beginning.

For this reason, the applicant has already developed a device for converting a two-dimensional image into a three-dimensional image (hereinafter referred to as a 2D / 3D image converting device). This 2D / 3
The principle of converting a 2D image into a 3D image by the D image conversion device will be described. That is, in the case of a 2D image showing an object moving from left to right, the original 2D image is used as the left-eye image, and the image several fields before the left-eye image is used as the right-eye image. . This way,
Since parallax occurs between the left-eye image and the right-eye image, by displaying both images on the screen almost at the same time, the moving object is projected forward with respect to the background.

An image several fields before the image for the left eye is obtained by storing the original two-dimensional image in a plurality of field memories and delaying the reading by a predetermined number of fields. The conversion method as described above will be referred to as a field delay method.

The 2D / 3D video conversion device has a display mode of a 2D video display mode and a 3D video display mode. In the 2D video display mode, the input 2D video signal is sent to the display device as it is without being converted into a 3D video signal. In the 3D image display mode, the input 2D image signal is converted into a 3D image signal and then sent to the display device.

[0007]

The 2D / 3D video converter developed by the present applicant can also convert a 2D video signal obtained from a television broadcast signal into a 3D video signal. Therefore, a TV receiver incorporating the 2D / 3D video conversion device can also be realized.

By the way, there is a character multiplex broadcasting as a broadcasting form which can be used by adding a dedicated receiving circuit to an existing TV receiver. Character multiplex broadcasting is a broadcasting system that multiplex broadcasts an information program composed of characters and figures in addition to conventional television broadcasting with one television wave.
That is, the character multiplex broadcasting is a broadcasting system in which still image information composed of characters and figures is added to an ordinary television program and transmitted, and the signal is decoded on the receiving side and displayed as still image information on a television receiver. Is.

In the TV receiver incorporating the 2D / 3D video conversion device, the field memory is not used when the display mode is the two-dimensional video display mode. Therefore, the present applicant has invented here a TV receiver that can effectively use the field memory when receiving the character multiplex broadcast when the display mode is the two-dimensional video display mode.

An object of the present invention is to separate a field memory of a 2D / 3D video converter from a character multiplex broadcasting signal.
It is to provide a TV receiver with a built-in 2D / 3D video conversion device that can be used as a buffer memory for temporarily storing the extracted teletext data.

Another object of the present invention is to use the field memory of the 2D / 3D video converter as a display memory for storing character / graphic pattern data corresponding to the character broadcast data separated / extracted from the character multiplex broadcast signal. Can 2
It is to provide a TV receiver with a built-in D / 3D video conversion device.

[0012]

Means for Solving the Problems The first two according to the present invention
A TV receiver with a built-in D / 3D video conversion device generates a main video signal and a sub video signal delayed from the main video signal by using a field memory from a two-dimensional video signal. 2D / for converting 3D images into 3D images
A 2D / 3D video converter built-in type TV receiver with a 3D video converter built-in, wherein teletext data separated / extracted from a text multiplex broadcast signal is temporarily stored in a field memory in the 2D / 3D video conversion apparatus. And a means for generating and displaying character / graphic pattern data from the teletext data taken out from the field memory.

A second 2D / 3D video converter built-in type TV receiver according to the present invention comprises a main video signal from a two-dimensional video signal and a sub video delayed from the main video signal by using a field memory. A TV receiver with a built-in 2D / 3D video conversion device that includes a 2D / 3D video conversion device that converts a 2D video into a 3D video by generating a signal A means for generating character / graphic pattern data from the extracted teletext data, and the generated character / graphic pattern data in 2D / 3D
Means for storing in the field memory in the video conversion device,
And a means for reading character / graphic pattern data from the field memory and displaying the character / graphic pattern.

[0014]

In the first 2D / 3D video converter built-in type TV receiver according to the present invention, the teletext data separated / extracted from the teletext signal is temporarily stored in the field memory in the 2D / 3D video converter. Is stored. Then, character / graphic pattern data is generated and displayed from the teletext data retrieved from the field memory.

In the second 2D / 3D video converter built-in type TV receiver according to the present invention, character / graphic pattern data is generated from the character broadcast data separated / extracted from the character multiplex broadcast signal. The generated character / graphic pattern data is stored in the field memory in the 2D / 3D video converter. Then, the character / graphic pattern data is read from the field memory and the character / graphic pattern is displayed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(1) Description of the first embodiment

(1-1) Description of Overall Configuration FIG. 1 shows the configuration of a TV receiver with a built-in 2D / 3D video conversion device.

In this TV receiver with a built-in 2D / 3D video converter, the field memory of the 2D / 3D video converter is separated / extracted from the character multiplex broadcast signal and decoded by the error correction circuit when receiving the character multiplex broadcast. Characters
It has a function that can be used as a buffer memory for temporarily storing a graphic signal.

(1-2) Description of 2D / 3D Video Conversion Device First, the 2D / 3D video conversion device built in the TV receiver will be described. The 2D / 3D video converter is a CPU
20, ROM 21, RAM 22, operation unit 23, motion vector detection circuit 16, field memory 11, interpolation circuit 1
2, video switching circuit 13, phase control circuits 14, 15, D /
It is composed of an A conversion circuit 17, a color signal demodulation unit 18, and a memory control circuit 24.

This 2D / 3D image conversion device generates parallax by generating a left-eye image and a right-eye image by the field delay method, and phase-shifts the generated left-eye image and right-eye image or both. By performing the shift, the positional relationship between the subject and the reference screen surface is changed.

A two-dimensional video signal a obtained from a television broadcast signal is input to the input terminal 1. This two-dimensional video signal a is sent to the motion vector detection circuit 16, the field memory 11 and the video switching circuit 13, respectively.

As is well known, the motion vector detection circuit 16 generates data for detecting a motion vector based on the representative point matching method.
The data generated by the motion vector detection circuit 16 is sent to the CPU 20.

The representative point matching method will be briefly described. A plurality of motion vector detection areas are set in the video area of each field, and each motion vector detection area is divided into a plurality of small areas. A plurality of sampling points and one representative point are set for each small area.

The difference (correlation value at each sampling point) between the video signal level at the sampling point in each small area in the current field and the video signal level at the representative point in the corresponding small area in the previous field is detected as each motion vector. Required for each area. Then, the correlation values of the sampling points having the same deviation with respect to the representative point are cumulatively added between the small areas in the respective motion vector detection areas. Then, in each motion vector detection area, the deviation of the point with the smallest correlation cumulative value, that is, the deviation of the point with the highest correlation is extracted as the motion vector (motion of the subject) in the motion vector detection area. It

The field memory 11 is provided to delay and output the two-dimensional video signal a in field units, and a plurality of field memories 11 are provided. Writing and reading of each field memory 11 are controlled by the memory control circuit 24.

The output b (delayed two-dimensional video signal) of the field memory 11 is sent to the video switching circuit 13 and the interpolation circuit 12, respectively. The interpolation circuit 12 generates an interpolation signal in the vertical direction with respect to the input signal b. The output c of the interpolation circuit 12 (vertical interpolation signal of the delayed two-dimensional video signal) c is sent to the video switching circuit 13.

Therefore, the video switching circuit 13 receives the input two-dimensional video signal a and delayed two-dimensional video signal b.
And the vertically-interpolated signal c of the delayed two-dimensional video signal b is input. The video switching circuit 13 supplies one of the signals b and c (sub video signal) to the left image phase control circuit 14 and the right image phase control circuit 15.
The signal a (main video signal) is switched and output according to the moving direction of the subject. However, if the delay amount is 0,
Left image phase control circuit 14 and right image phase control circuit 15
The signal a is sent to both the and.

One of the signals b and c is selected based on whether the two-dimensional video signal a is an odd field or an even field. That is, the one corresponding to the field type (odd field or even field) of the two-dimensional video signal a is selected from the signals b and c. Switching of images by the image switching circuit 13 is performed by CP
Controlled by U20.

The phase control circuits 14 and 15 are provided to move the display position of the input image in the horizontal direction by shifting the phase of the input image signal. The phase shift amount and the shift direction are controlled by the memory control circuit 24. Left image phase control circuit 14
The outputs (Y, Cr, Cb) are converted into analog signals by the D / A conversion circuit 17, and then converted into color signals (R, G, B) by the color signal demodulation unit 18. Then, it is supplied to a three-dimensional display (not shown) via the video switching circuit 38 and the left-eye video signal output terminal 2.

The outputs (Y, Cr, Cb) of the right image phase control circuit 15 are converted into analog signals by the D / A conversion circuit 17, and then color signals (R, G) by the color signal demodulation section 18. , B). Then, it is supplied to a three-dimensional display (not shown) via the video switching circuit 38 and the right-eye video signal output terminal 3.

The CPU 20 controls the memory control circuit 24 and the video switching circuits 13 and 38. The CPU 20 includes a ROM 21 that stores the program and the like and a RAM 22 that stores necessary data. Data necessary for motion vector detection is sent from the motion vector detection circuit 16 to the CPU 20. In addition, the CPU 20
An operation unit 23 including various input means and a display is connected.

The CPU 20 determines, based on the motion vector,
The number of delay fields (delay amount) by the field memory 11 is calculated. That is, in principle, the delay amount is determined so that the delay amount is small when the motion vector is large, and the delay amount is large when the motion vector is small. When changing the delay amount, the delay amount is changed by the number of fields so that the delayed image changes smoothly.

The CPU 20 also controls the video switching circuit 13 based on the direction of the motion vector. That is, if the direction of the motion vector is from left to right, the input 2
The two-dimensional video signal a is supplied to the left-eye phase control circuit 14, and the delayed two-dimensional video signal b or c is supplied to the right-eye phase control circuit 15.
Send to When the direction of the motion vector is from right to left, the input two-dimensional video signal a is supplied to the right-eye phase control circuit 14
Then, the delayed two-dimensional video signal b or c is sent to the left-eye phase control circuit 15.

In this 2D / 3D video conversion device, parallax is generated by generating a left-eye image and a right-eye image by the field delay method, and a phase is applied to both or one of the generated left-eye image and right-eye image. By performing the shift, the positional relationship between the subject and the reference screen surface is changed.

The display modes of the 2D / 3D image conversion device include a 2D image display mode and a 3D image display mode. In the 2D video display mode, the input 2D video signal is sent to the display without being converted into a 3D video signal. In the 3D image display mode, the input 2D image signal is converted to a 3D image signal and then sent to the display.

(1-3) Description of other equipment

TV with built-in 2D / 3D video conversion device of FIG.
In the receiver, in addition to the 2D / 3D video conversion device, a high frequency reception unit 31, a video demodulation unit 32, a character signal acquisition unit 33, a display clock generation circuit 34, a character generator 35,
A character display signal generator 36, a read / write circuit 37, and a video switching circuit 38 are provided.

The TV signal having the character / graphic information superimposed thereon, which is received by the high frequency receiver 31, is demodulated by the video demodulator 32. From the demodulated video signal, the character signal acquisition unit 33
Character / figure data (text broadcast data) is separated by
It is extracted and provided in the character signal acquisition unit 33 (2
72, 190) Shortened difference set cyclic code (BEST method)
Is decoded by the error correction circuit of.

When it is desired to display the television broadcast signal demodulated by the video demodulation unit 32 on the display when the character program is not displayed, the display mode of the 2D / 3D video conversion device is changed to the two-dimensional video display mode. Just set it.

The character / graphic data (text broadcast data) acquired by the character signal acquisition unit 33 is once written in the field memory 11 via the read / write circuit 37. Then, the field memory 11
Character / figure data is extracted from the character / figure data by the character display signal generator 36.
Converted to a figure pattern.

The CPU 20 uses the code included in the character / graphic data fetched from the field memory 11 by using the character generator 35 or the code conversion routine executed in the CPU 20 to generate the corresponding character. A graphic pattern is generated and written in a display memory (not shown) in the character display signal generator 36.

The character / graphic pattern written in the display memory is read in synchronization with the horizontal and vertical synchronizing signals generated from the display clock generating circuit 34. The read character / graphic pattern is converted into an RGB signal by the display RGB signal synthesizing unit which receives a display color designation corresponding to the character broadcast data from the CPU 20, and is sent to the video switching circuit 38.

The video switching circuit 38 switches between the input from the color signal demodulation section 18 and the input from the character display signal generation section 36 to output the same. At the timing when the RGB signal for the character / graphic pattern is sent to the video switching circuit 38, the video switching circuit 38 determines the input from the color signal demodulation unit 18 from among the output terminals 2 and 3 for the left eye or the right eye. Output to the terminal. Therefore, the text program is displayed on the display.

(2) Description of the second embodiment

(2-1) Description of Overall Structure FIG. 2 shows the structure of another TV receiver with a built-in 2D / 3D video conversion device.

In this 2D / 3D video converter built-in type TV receiver, when receiving the character multiplex broadcast, the field memory of the 2D / 3D video converter is separated / extracted from the character multiplex broadcast signal and decoded by the error correction circuit. It has a function that can be used as a display memory for storing character / graphic pattern data corresponding to the generated character / graphic data.

(2-2) Description of 2D / 3D Video Converter Since the configuration of the 2D / 3D video converter is the same as that of FIG. 1, the same reference numerals as those in FIG. 1 are given and the description thereof is omitted.

(2-3) Description of other equipment

TV with built-in 2D / 3D video converter shown in FIG.
In the receiver, in addition to the 2D / 3D video conversion device, a high frequency reception unit 31, a video demodulation unit 32, a character signal acquisition unit 33, a display clock generation circuit 34, a character generator 35,
A color signal conversion circuit 41 and a read / write circuit 42 are provided. Note that this TV receiver is not provided with the video switching circuit 38 (see FIG. 1), unlike the TV receiver of FIG.

The TV signal on which the character / graphic information is superimposed, which is received by the high frequency receiver 31, is demodulated by the video demodulator 32. From the demodulated video signal, the character signal acquisition unit 33
The character / graphic signal is separated / extracted by and is decoded by the error correction circuit of the shortened difference set cyclic code (BEST method) provided in the character signal acquisition unit 33.

When it is desired to display the television broadcast signal demodulated by the video demodulation unit 32 on the display when the text program is not displayed, the display mode of the 2D / 3D video conversion device is changed to the two-dimensional video display mode. Just set it.

The character / graphic data acquired by the character signal acquisition unit 33 is once written in the RAM 22.
Then, the character / graphic data is extracted from the RAM 22 for each predetermined unit, and the extracted character / graphic data is CP.
It is converted into a character / graphic pattern by U20. That is, the CPU 20 causes the character
A corresponding character / graphic pattern is generated by using a code included in the graphic data by using the character generator 35 or a code conversion routine executed in the CPU 20. The generated character / graphic pattern is associated with a color in the CPU 20, but since the colored character / graphic pattern data is R, G, B data, Y, Cr, Cb data is generated by the color signal conversion circuit 41. After being converted into, the data is written in the field memory 11 via the read / write circuit 42.

The character / graphic pattern data written in the field memory 11 is read out in synchronization with the horizontal and vertical synchronizing signals generated from the display clock generating circuit 34. The read character / graphic pattern (image) is sent to the video switching circuit 13.

Character / figure pattern is field memory 1
At the timing of sending from 1 to the video switching circuit 13, the video switching circuit 13 shuts off the input from the input terminal 1 and determines the input from the field memory 11 from among the output terminals OL and OR. Output to the output terminal. The character / graphic pattern data output from the video switching circuit 13 is converted into analog signals (Y, Cr, Cb) by the D / A conversion circuit 17, and then the color signal demodulation unit 18
Are converted into color signals (R, G, B). And
It is supplied to a display (not shown) via the video signal output terminal 2 or 3. Therefore, the text program is displayed on the display.

[0056]

According to the present invention, the field memory of the 2D / 3D video converter can be used as a buffer memory for temporarily storing the teletext data separated / extracted from the teletext signal. A TV receiver with a built-in 3D image conversion device can be obtained.

Further, according to the present invention, the field memory of the 2D / 3D video converter is used as a display memory for storing character / graphic patterns corresponding to the character broadcast data separated / extracted from the character multiplex broadcast signal. A TV receiver with a built-in 2D / 3D video conversion device is provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a 2D / 3D video conversion device built-in type TV receiver in which a field memory is used as a buffer memory for temporarily storing teletext data.

FIG. 2 is a block diagram showing an electrical configuration of a 2D / 3D video converter built-in type TV receiver in which a field memory is used as a display memory for storing a character / graphic pattern.

[Explanation of symbols]

 11 field memory 20 CPU 21 ROM 22 RAM 33 character signal acquisition unit 35 character generator 36 character display signal generation unit 37 read / write circuit 41 color signal conversion circuit 42 read / write circuit

Claims (2)

[Claims] 1. A two-dimensional image is generated by generating a main image signal and a sub-image signal delayed from the main image signal using a field memory from the two-dimensional image signal.
A 2D / 3D video converter with built-in 2D / 3D video converter for converting 3D video, which is a 2D / 3D video converter for teletext data separated / extracted from a text multiplex broadcast signal. Built-in 2D / 3D video conversion device, characterized in that it comprises means for temporarily storing in a field memory inside thereof and means for generating and displaying a character / graphic pattern from teletext data taken out from the field memory. Type TV receiver. 2. A 2D video signal is generated from a 2D video signal by generating a main video signal and a sub video signal delayed from the main video signal using a field memory.
A TV receiver with a built-in 2D / 3D video conversion device for converting a 2D / 3D video conversion device for converting 3D video into character / graphic pattern data from text broadcast data separated / extracted from a text multiplex broadcast signal. A means for generating, a means for storing the generated character / graphic pattern data in a field memory in the 2D / 3D video converter, and a means for reading the character / graphic pattern data from the field memory and displaying the character / graphic pattern. A TV receiver with a built-in 2D / 3D video conversion device, which is characterized by being provided.