JPH01114294A - Transmitting device for stereo picture pair television signal - Google Patents

Abstract

PURPOSE:To attain a transmission with one channel of the television transmission path of a present system by restoring one stereo picture from separated three-dimension information and the other separated stereo picture pair television signal. CONSTITUTION:The three-dimension information is extracted from the stereo picture pair television signal having a binocular parallax by a three-dimension information extracting circuit 32, this three-dimension information is multiplexed by a three-dimension information multiplexing circuit 33 and transmitted to the other signal of the stereo picture pair television signal, on a receiving side, the three-dimension information and the other stereo picture pair television signal are separated from the transmitted television signal and the stereo picture television signal is reproduced from the two. Thus, the stereo picture pair television signal having compatibility with the present television system can be transmitted with one channel of the transmission path of the present television signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to a stereo image-to-television signal transmission device, and more particularly to a transmission device for transmitting a stereo image-to-television signal that is compatible with current television signals. Regarding equipment.

[Prior Art] One example of transmitting a television signal of a pair of stereo images is time-division display using a stereoscopic VHD video disc.

FIG. 8 is a schematic block diagram showing the configuration of time-division display using a stereoscopic VHD video disc. In FIG. 8, the image reproduction circuit 11 reproduces a left image and a right image with binocular parallax,
Each signal is reproduced as an NTSC signal having 60 fields of images per second. The television signals of the left image and the right image reproduced by the image reproduction circuit] are respectively given to the field switching unit 13, and the field ID
The left image signal and the right image signal are switched for each field by the field ID signal output from the circuit 14, and are output as a composite image signal.

The composite image signal is provided to a stereo image pair display 17. Further, the field ID circuit [4] is supplied with a field ID fix signal from the field ID fix signal generation circuit [8]. Further, the field ID signal is given to the shutter glasses 16 to control the shutter.

FIG. 9 is a waveform diagram for explaining an operation for time-divisionally displaying a left image and a right image using the conventional VHD video disc shown in FIG.

Next, the operation of the conventional stereo image-to-signal transmission device will be described with reference to FIGS. 8 and 9.

In the first field 21 shown in FIG. 9, the field switching unit 13 selects the left 1 of the left image signal reproduced by the image reproduction circuit 1, and in the second field 22, the field switching unit 3 selects the field ID. The right image signal 2 of the right image signal that is switched by the signal and reproduced by the image reproduction circuit] 1 is selected. Below, field switching section 13
is the left 3. of the left image signal. Image signals on the right 4 of the right image signals are selected and displayed on the stereo image pair display 17 as a composite image signal.

At this time, when looking at the image displayed on the stereo image display 17 through the shutter glasses] 6, in the first field 21, the left shutter of the shutter glasses 16 is opened, and the right shutter is closed. It will be done. Therefore, in the first field 21, the left 1 of the left image signal is presented, and in the second field, the right shutter is opened and the left shutter is closed, so that the right 2 image of the right image signal is presented. Presented. Thereafter, the left and right shutters of the shutter glasses 16 are alternately closed, and the third field 23
The following images are presented. As a result, images with binocular parallax are presented to the left and right eyes in chronological order, resulting in a three-dimensional effect.

In addition, when the shutter glasses 16 are not used, the eighth
The field ID fixed signal generation circuit 18 shown in the figure is enabled, the field ID signal is fixed, and only one of the left image and the right image is transmitted in a fixed manner.

[Problems to be Solved by the Invention] In the conventional stereo image pair signal transmission apparatus shown in FIGS. 1/30 sec
Therefore, a large-area full-color image can be detected, causing image quality deterioration and visual fatigue. In addition, by inputting this type of television signal into a regular television receiver,
If observed as is, images with parallax will be repeatedly presented for each field, resulting in an extremely difficult to view image. Also, if you fix the field ID and fix it to either the left image or the right image, you can observe the correct image even with current television receivers.
In this method, it is necessary to transmit both left and right image signals in the transmission system, so there is a problem in that the current transmission path requires two channels.

Therefore, the main object of the present invention is to make it possible to transmit in one channel the amount of information originally required for two channels when transmitting a television signal of a pair of stereo images, and to avoid large-area flicker. An object of the present invention is to provide a stereo image-to-television signal transmission device that can eliminate the need for stereo images and achieve compatibility with current television systems.

[Means for Solving the Problems] The present invention provides an input means for inputting a television signal of a pair of stereo images having binocular parallax, and a means for extracting stereoscopic information from the television signal of a pair of stereo images. an extraction means, a multiplexing means for multiplexing the stereoscopic information onto a television signal of one of the pair of stereo images, a separating means for separating the stereoscopic information from the multiplexed television signal, and a separated stereoscopic information. and a restoring means for restoring the stereo image of one of the separated stereo image pairs from the television signal of the other.

[Operation] The stereo image versus television signal transmission device according to the present invention extracts stereoscopic information from a stereo image versus television signal having binocular parallax, and transfers this stereoscopic information to the other stereo image versus television signal. The receiver side separates the stereoscopic information and the other side of the stereo image-to-television signal from the transmitted television signal, and reproduces the stereo image-to-television signal from both. A stereo image-to-television signal compatible with the current television system can be transmitted using only one channel of television signal transmission path.

[Embodiments of the invention] FIG. 1 is a schematic block diagram of an embodiment of the present invention.

First, the configuration of an embodiment of the present invention will be described with reference to FIG. The imaging device 3] reproduces a left image signal and a right image signal with binocular parallax. The left image signal is given to a 3D information extraction circuit 32 and a 3D information multiplexing circuit 33. The three-dimensional information extraction circuit 32 includes the imaging device 3
Right image signals are given from 1 to 1. Then, the 3D information extraction circuit 3] extracts 3D information based on the left image signal and the right image signal, and provides the 3D information to the 3D information multiplexing circuit 33. The three-dimensional information multiplexing circuit 33 multiplexes three-dimensional information on the left image signal. The television signal multiplexed by the 3D information multiplexing circuit 33 is transmitted to the image receiving side via the transmission line 34.

On the image receiving side, there is a 3D information separation circuit 35 and a right image restoration circuit 36.
and a stereo image pair display 37.

The stereoscopic information separation circuit 35 separates the left image signal and the stereoscopic information from the multiplexed television signal. The separated three-dimensional information is given to the right image restoration circuit 36,
The left image signal is applied to a right image restoration circuit 36 and a stereo image pair display 37.

The right image restoration circuit 36 restores the right image signal based on the left image signal and the stereoscopic information, and displays the stereo image pair display 37.
give to The stereo image pair display 37 displays a stereo image based on the left image signal and the restored right image signal.

Next, the operation of the stereo image-to-television signal transmission apparatus shown in FIG. 1 will be described. When the left image signal and right image signal are output by the imaging device 31, the 3D information extraction circuit 32 extracts 3D information based on the left image signal and the right image signal, and converts the 3D information into a 3D image. and is applied to the converted information multiplexing circuit 33. The 3D information multiplexing circuit 33 multiplexes the left image signal and the 3D information and transmits it to the transmission line 34.

On the receiving side, a stereoscopic information separation circuit 35 separates the stereoscopic information and the left image signal from the multiplexed television signal,
The right image restoration circuit 36 restores the right image signal based on the left image signal and the stereoscopic information.

The restored right image signal is provided to the stereo image pair display 37, and the separated left image signal is also provided to the stereo image pair display 37. Thereby, the stereo image pair display 37 displays a stereo image pair based on the left image signal and the right image signal.

Note that in the above embodiment, the stereoscopic information is multiplexed on the left image signal and transmitted, and the left image signal and the stereoscopic information are separated on the receiving side. Alternatively, the left image signal may be restored on the receiving side.

FIG. 2 is a concrete block diagram showing a transmitting side encoder device in an embodiment of the present invention.

In this embodiment, a case will be explained in which the NTSC system is used as the television system. The left image signal consisting of R, G, and B output from the imaging device 31 is 7
The 7 trix circuit 42 outputs the luminance signal YL1, the chrominance signal 1. Q is created. Color signal 1. Q is applied to a color modulation circuit 43, which modulates it with a color subcarrier signal to output a carrier color signal, which is then sent to an addition circuit 44.
given to. The adder circuit 44 adds the luminance signal Y to the carrier color signal.
, and outputs an NTSC signal. Such a configuration is capable of converting NTS from conventionally known R, G, and B image signals.
It is configured in the same way as an NTSC encoder that creates a C signal.

On the other hand, the right image signal composed of R, G, and B output from the imaging device 31 is given to the matrix circuit 45.

The matrix circuit 45 converts the R, G, and B signals into a luminance signal Y,
is created and given to the subtractor 46.

The difference unit 46 takes out the difference between the brightness signal Y of the left image and the brightness signal Y of the right image created by the matrix circuit 42, and extracts stereoscopic information.

The three-dimensional information extracted by the subtractor 46 is given to a low-pass filter 47. The low-pass filter 47 limits the band of the three-dimensional information in order to make it suitable for multiple processing at a later stage.

The stereoscopic information band-limited by the low-pass filter 47 is given to the modulation circuit 48. The modulation circuit 48 modulates the stereoscopic information using subcarriers and supplies it to four adder circuits.

The adder circuit 49 adds the NTSC signal obtained from the left image signal and the stereoscopic information modulation signal obtained by the modulation circuit 48, and outputs a stereo image pair television signal.

3 and 4 are diagrams for explaining a method for multiplexing stereoscopic information in an embodiment of the present invention. In particular, FIG. 3(a) shows the phase 51 of the subcarrier of the stereoscopic information. 3(b) shows the phase 5 of the color subcarrier of the NTSC signal.
2, indicating that the phase 51 of the subcarrier for multiplexing stereoscopic information and the phase 52 of the color subcarrier differ between fields. As a result of the stereoscopic information being modulated by this subcarrier, it is multiplexed at position 53 shown in FIG. Reference numeral 53 indicates a multiplex position of the three-dimensional information on the temporal frequency f-vertical frequency plane, and reference numeral 54 indicates a multiplex position of the color signal on the f-v plane.

By using subcarriers such as those shown in FIGS. 3 and 4, stereoscopic information can be multiplexed onto the NTSC signal in a manner that is compatible with current television systems.

FIG. 5 is a schematic block diagram showing a decoder device for decoding television signals in one embodiment of the present invention.

In FIG. 5, a stereoscopic information/color signal separation circuit 61 separates a modulated stereoscopic information signal and a carrier color signal from a stereo image pair television signal, and is a conventional Y/color signal separating circuit 61.
It is constructed in substantially the same manner as the interfield comb filter used in the C separation circuit. The separated carrier color signal is applied to a color demodulation circuit 62. The color demodulation circuit 62 converts the color signal 1.1 from the carrier color signal. The demodulated color signals I and Q are supplied to the matrix circuit 63. The matrix circuit 63 includes a three-dimensional information/color signal separation circuit 61
A luminance signal YL separated by is given. The matrix circuit 63 receives color signals I, Q and luminance signal Y.
Converts L into R, G, and B signals and provides them to the left display 64. The left display 64 displays the left image based on the R, G, and B signals given from the matrix circuit 63.

On the other hand, the modulated stereoscopic information separated by the stereoscopic information/color signal separation circuit 61 is given to a demodulation circuit 65, and the stereoscopic information is demodulated using subcarriers. The demodulated stereoscopic information is sent to an adding circuit 66, which adds the stereoscopic information and the luminance signal Y of the left image to obtain the luminance signal Y of the television signal for the other stereo image. Create. The luminance signal Y created by the adder circuit 66 is given to a matrix circuit 67. The matrix circuit 67 is supplied with color signals I and Q from the color demodulation circuit 62.

Therefore, the matrix circuit 67 creates R, G, and B signals of the right image based on the luminance signal Y and the luminance signals I and Q, and supplies them to the right display 68. The right display 68 displays the right image based on the R, G, and B signals created by the matrix circuit 67.

As mentioned above, by configuring the decoder device,
Left and right images can be displayed on left display 64 and right display 68, respectively, from a stereo image-to-television signal that is compatible with current systems.

FIG. 6 is a more specific block diagram of the stereoscopic information/color signal separation circuit shown in FIG. In FIG. 6, the stereoscopic information/color signal separation circuit 61 is a 262-line delay circuit 7.
1 and 1 line delay circuit 73, subtracters 72 and 75, and adder 74. Stereo image vs. television signal is 26
It is applied to a 2-line delay circuit 71, subtraction circuits 72, 75, and addition circuit 74. The 262 line delay circuit 71 delays the stereo image to television signal by 262 lines. Subtractor 72 subtracts the 262-line delayed television signal from the stereo image-to-television signal and utilizes the interfield correlation properties of the television signal and the phase properties of the subcarriers to generate modulated stereoscopic information. Output.

The 1-line delay circuit 73 further delays the television signal delayed by 262 lines by one line and sends it to the adder 74.
give to The adder 74 adds the stereo image pair television signal and the television signal delayed by 263 lines by the 262-line delay circuit 71 and the 1-line delay circuit 73, outputs a carrier color signal, and subtracts the carrier color signal. It is also given to vessel 75. Subtractor 75 subtracts the carrier color signal and modulated stereoscopic information from the stereo image-to-television signal and outputs a waist luminance signal YL.

Note that in the encoders and decoders shown in Figures 2 and 5 above, the stereoscopic information is multiplexed and transmitted on the left image signal, but it is also possible to multiplex and transmit the stereoscopic information on the right image signal. It is clear that

In addition, in the encoder and decoder shown in the above embodiment, the three-dimensional information obtained from the luminance signal Y is transmitted, but the three-dimensional information obtained by not only the luminance signal Y but also the color signals I and Q is transmitted. It is also possible to transmit the converted information component.

FIG. 7 is a diagram showing an example of a signal format for transmitting the luminance signal Y and color signals I and Q as stereoscopic information. Luminance signal Y and color signal engineering.

In order to make Q into three-dimensional information, transmit the three-dimensional information of the luminance signal Y, which is time-compressed to 3/4, and the three-dimensional information of the color signal I, which is time-compressed to 1/4, on the odd lines, and In the line, three-dimensional information of the luminance signal Y time-compressed to 3/4 and three-dimensional information of the color signal Q time-compressed to ]/4 are transmitted. In this way, the luminance signal Y and the chrominance signals I and Q are multiplexed on the time axis, and the chrominance signals I and Q are switched line by line and multiplexed line-sequentially. It becomes possible to transmit all the three-dimensional information of Q.

[Effects of the Invention] As described above, according to the present invention, stereoscopic information is extracted from a television signal of a pair of stereo images, and the extracted stereoscopic information is multiplexed onto the television signal of one of the pair of stereo images and transmitted. Then, the stereoscopic information is separated from the transmitted television signal, and the separated stereoscopic information and the stereo image of one of the separated stereo image pairs are restored from the other television signal. It becomes possible to transmit television signals through the television transmission path of the current system. Furthermore, the television signal transmitted by the present invention can be made compatible with current television signals, and when received by a current television receiver, can be received as a normal television signal. can.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an embodiment of the present invention. FIG. 2 is a concrete block diagram of an encoding device for creating a television signal according to the present invention. Third
This figure and FIG. 4 are diagrams for explaining a method of multiplexing stereoscopic information on an NTSC-17= signal. FIG. 5 is a schematic block diagram of a decoder device for decoding television signals according to the present invention. FIG. 6 is a schematic block diagram of an apparatus for separating stereoscopic information from a television signal in the present invention. 7th
The figure shows a signal format for transmitting a luminance signal Y and color signals I and Q as stereoscopic information. FIG. 8 is a schematic block diagram of a conventional stereoscopic VHD video disc. FIG. 9 is a diagram for explaining in detail a conventional stereo image pair transmission method. In the figure, 31 is an imaging device, 32 is a 3D information extraction circuit, 33 is a 3D information multiplexing circuit, 34 is a transmission path, 35 is a 3D information separation circuit, 36 is a right image restoration circuit, and 37 is a stereo image pair display 42° 45.63.67 is a matrix circuit, 43.62 is a color demodulation circuit, 44, 49.74
is an adder circuit, 46 is a differencer, 47 is a low-pass filter,
48 is a modulation circuit, 6 is a stereoscopic information/color signal separation circuit,
65 is a demodulation circuit, 64 is a left display, 68 is a right display, =
18-71 is a 262 line delay circuit, 72.75 is a subtracter, 7
3 indicates a one-line delay circuit. Patent applicant: A.T.R. Co., Ltd. - 1 figure - Figure 3 (b) Pano TSC Ibari f and vice 4 force Ω, L5LO medium-inclusive f5 friend's beef x 44'3. Five lotus spears Rekhot” A Fig. 4

Claims (1)

[Scope of Claims] Input means for inputting a television signal of a stereo image pair having binocular parallax images; and extracting stereoscopic information from the television signal of a stereo image pair input from the input means. extraction means; multiplexing means for multiplexing the stereoscopic information extracted by the extraction means onto one television signal of a pair of stereo images; and extracting stereoscopic information from the television signal multiplexed by the multiplexing means. and a restoring means for restoring the television signal of one of the pair of stereo images separated from the stereoscopic information separated by the separating means, from the television signal of the other stereo image. , a stereo image-to-television signal transmission device.