KR920003682B1 - High-definition solid-video signal transmission and receiving system - Google Patents

Abstract

The system includes a first mixer (12) for mixing the output signals of first and second cameras to output brightness difference signals. A first separating section (17) filters the brightness signals of the first camera to separate them into low pass brightness signals and high pass brightness signals. A high resolution stereoscopic brightness signal generating section (23) processes the output of the separating section (17) to generate high resolution stereoscopic brightness signals. A main channel video signal generating section (29) processes the output of the separating section (17) to generate composite video signals. A chromaticity signal generating section (35) detects color difference signals to generate chromaticity signals. The system further includes a multi-audio signals generating section (43), first and second channel modulating sections (44)(46), and another mixer (48).

Description

High resolution stereoscopic image transmission and reception system

1 is a block diagram of a high resolution stereoscopic image transmission system according to the present invention.

2 is a block diagram of a high resolution stereoscopic image receiving system according to the present invention.

3 is a transmission frequency spectrum diagram of a transmission system of FIG.

* Explanation of symbols for main parts of the drawings

12: first mixer 17: first separator

23: high resolution stereoscopic luminance signal generator 29: main channel composite video signal generator

35: stereoscopic chroma signal generator 44, 46: first and second channel modulator

48: 7th mixer 53, 57: 1st, 2nd tuning part

61 audio signal demodulator 66 first comb pattern filter

71: second separator 75: third separator

76, 78, 80: 8th, 9th, 10th mixer 82, 84: color demodulator

The present invention relates to a stereoscopic image signal transmission and reception system, and more particularly, to a transmission system and a receiving system for transmitting a high resolution stereoscopic image signal.

Currently, the development of a stereoscopic image transmission and reception system capable of transmitting and receiving stereoscopic images using the TV broadcasting field and TV broadcasting reception technology is a trend of development.

In the above-described stereoscopic image, two cameras are placed at the same distance as the human eye, for example, about 7 cm, to shoot an object (subject), and the two images obtained here are left cameras on the left eye and right cameras on the right eye. It is based on the principle that you can feel the three-dimensional effect by watching the recorded video.

On the basis of the above principle has been published a technology related to three-dimensional cinema or stereoscopic TV. See the January 22, 1989, issue of Television Technology, a Japanese technical magazine for an overview of 3-D VHD televisions, and pages 82 to 87 of the IEEE CE (published in February 1985) published in the United States. There is a description of an image transmitter and a stereoscopic image receiver.

However, such a technique has a problem that the flicker is severe, the resolution is low, and cannot be used by non-glasses.

Accordingly, an object of the present invention is to transmit a composite video signal to the main channel using one main channel and another auxiliary channel, and to transmit a high resolution stereoscopic video signal by transmitting a stereoscopic image and a high resolution luminance signal to the auxiliary channel. It is to provide a transmission system.

Another object of the present invention is to separate a main channel signal and an auxiliary channel signal from a high resolution stereoscopic video signal occupying two channels, and to reproduce a stereoscopic image by calculating a composite video signal of the main channel and a subsignal of the auxiliary channel. To provide a stereoscopic image signal receiving system.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram of a high-resolution stereoscopic image transmission system according to the present invention, which outputs a luminance difference signal YL-YR by mixing a luminance signal YL of a first camera and a luminance signal YR of a second camera. A first separator 17 for separately outputting the first mixer 12 and the luminance signal YL of the first camera into a low-pass luminance signal YLL having a predetermined band or less and a high-frequency luminance signal YH having a predetermined bandwidth; ) And a high-band luminance signal YH having a predetermined bandwidth outputted from the luminance difference signal YL-YR output from the first mixer 12 and the first separation unit 17, and calculating the sum of the two signals. A high resolution stereoscopic luminance signal generator 23 for generating a high resolution stereoscopic luminance signal YT and a chromaticity signal CLM modulated by filtering and modulating the chromaticity signal CL of the first camera to a signal below a predetermined band. And a low-pass luminance signal (YLL) below a predetermined band outputted from the first separation unit (17) and A main channel video signal generator 29 for calculating a pre-modulated chroma signal CLM and outputting the composite video signal CVL for the main channel, a chroma signal CL of the first camera, and a chromaticity of the second camera A stereoscopic chromaticity signal generator 35 for inputting a signal CR, detecting and modulating the chromaticity difference signal CL-CR of the two chromaticity signals, and outputting a stereoscopic chromaticity signal CT, and a predetermined first audio signal; An audio multiple signal generator 43 for outputting an audio multiple signal AT by FM-FM modulation of the signal AL and the second audio signal AR, and an output from the main channel composite video signal generator 29 The main channel composite video signal CVL and the output and the audio multiple signal AT output from the audio multiple signal generator 43 are modulated to a first channel frequency S (n) having a predetermined first carrier wave A first channel modulator 44 to be output, a high resolution stereoscopic luminance signal YT output from the high resolution stereoscopic luminance signal generator 23, and A second channel modulator for modulating and outputting the chromaticity signal CT of the stereoscopic image output from the stereoscopic image chromatic signal generator 35 into a second channel signal S (n + 1) having a carrier wave adjacent to a predetermined first channel ( 46 and a seventh mixer which absorbs the modulation output of each of the first and second channel modulators 44 and 46 and outputs a high resolution stereoscopic image RF (Radio Frequency) signal (SM) occupying two channels. It consists of 48.

The first separation unit 17 of the configuration of FIG. 1 receives the luminance signal YL of the first camera, filters the signal below a predetermined band, and outputs the low-pass luminance signal YLL. (Low Pass Fileter: denoted by subscript in LPF) 14 and a first band pass filter (Band) for outputting high luminance signal YH by band filtering the luminance signal YL into a signal of a predetermined band. Pass Filter: Hereafter, BPF is indicated with a subscript) (16).

The high resolution stereoscopic luminance signal generator 23 low-pass filters the luminance difference signal YL-YR output from the first mixer 12 to a signal of a predetermined band or less and outputs the luminance signal Y- of the stereoscopic image. 18) and a first frequency shifter (hereinafter referred to as FS) for outputting a frequency shifted high frequency luminance signal YHS by frequency shifting the high frequency luminance signal YH output from the BFP 16 to a predetermined state. And a high-resolution luminance signal (YHS) of the frequency shifted signal of the FS1 (20) is added to the luminance signal (Y−) of the stereoscopic image output from the LPF2 (18). And a second mixer 22 for outputting a signal YT.

The main channel composite image signal generator 29 filters the chroma signal CL of the first camera to a predetermined band or less, and outputs a low frequency chroma signal CLL to the LPF3 24 and the LPF 3 24. A first balanced modulator (hereinafter referred to as BM) 26 which balance-modulates the low-band chromaticity signal CLL and outputs the modulated chromaticity signal CLM, and the low range of the LPF1 14 described above. And a third mixer 28 for adding the luminance signal YLL and the modulated chromaticity signal CLM to output the composite video signal CVL for the main channel.

The stereoscopic image chromaticity signal generator 35 inputs and operates the chromaticity signals CL and CR output from the first and second cameras, respectively, and outputs the chromaticity difference signal CL-CR. LPF4 (32) for outputting the chroma signal (C-) of the stereoscopic image by low-pass filtering the chromaticity difference signal (CL-CR) output from the fourth mixer (30), and the stereoscopic output from the LPF4 (32) And a BM2 34 that balances and modulates the chroma signal C- of the image to output the chroma signal CT of the stereoscopic image.

The voice multiple signal generator 43 may include a fifth mixer 36 for mixing and outputting a first voice signal AL and a second voice signal AR, and the first voice signal AL and the fifth mixer 36. From the first and second frequency modulators (hereinafter referred to as FM) (38) and (40) and (40) and (40), respectively. And a sixth mixer 43 for mixing the first and second modulated audio signals AM and AS, which are FM-modulated outputs, to output the voice multiplex signal AT.

2 is a circuit diagram of a high-resolution stereoscopic image receiving system according to the present invention, in which a main channel signal source having a carrier wave of a predetermined first channel signal is received from a high-resolution stereoscopic image reception RF signal SM, and an audio multiplex signal AT is obtained. And a first tuner 53 for outputting a main channel composite video signal CVL, and a sub-channel signal source adjacent to a carrier of a predetermined first channel signal in the received high resolution stereoscopic image RF signal SM. A second tuning unit for outputting a stereoscopic composite image signal YT + CT mixed with a high resolution stereoscopic luminance signal YT and a chromaticity signal CT of a stereoscopic image [YT + CT = (Y −) + YHS + CT]; 57) and a voice demodulation unit 61 for inputting a voice multiple signal AT output from the first tuning unit 53 and demodulating and outputting the predetermined first voice signal AL and the second voice signal AR. The low channel luminance signal YLL and the modulated chromaticity are filtered by filtering the main channel composite image signal CVL output from the first tuning unit 53. A first comb-shaped filter (hereinafter referred to as COMB) 66, which is separated and output by a CLM (CLM = CL), and a stereo composite video signal output from the second tuning unit 57. (YT + CT) A second output of low-pass and band-pass filtering of the [YT + CT = (Y-) + YHS + CT] signal into a luminance signal (Y-) and a composite signal (YHS + CT) of the stereoscopic image; A third separation unit filtering the complex signal YHS + CT output from the separation unit 71 and the second separation unit 71 to separate and output the high luminance signal YH and the chroma signal CT of the stereoscopic image; The unit 75, the low luminance signal YLL output from the COMB1 66, and the high luminance signal YH separated and output from the third separation unit 75 are added to the luminance signal YL of the first camera. ) Is output to the eighth mixer 76, the luminance signal Y- of the stereoscopic image separated and output from the second separator 71 and the luminance signal of the first camera output from the eighth mixer 76. (YL) to mix the A ninth mixer 78 for outputting the island signal YR, a chromaticity signal CT of the stereoscopic image separated from the third separator 75, and a modulated chromaticity signal separated from the COMB1 66; A tenth mixer 80 for mixing the CLMs to output the modulated chromaticity signal CRM (CRM = CR) of the second camera, and a luminance signal YL of the first camera output from the eighth mixer 76. And a first color demodulator 82 (hereinafter referred to as CDM1) 82 for demodulating and outputting the RL GL BL video signal of the first camera by inputting the main channel modulated chromaticity signal CLM separately outputted from COMB1 66. Inputs the luminance signal YR of the second camera output from the ninth mixer 78 and the modulated chromaticity signal CRM of the second camera output from the tenth mixer 80 to input RF, GR, and BR images of the second camera. And a second color demodulator (hereinafter referred to as CDM2) 84 for demodulating and outputting a signal.

In the above-described configuration, the first tuning unit 53 is a first tuner (hereinafter referred to as TU) and outputs a tunable output of a predetermined first channel signal source among the high resolution input images received, and the TU1 ( A first intermediate frequency signal outputting an audio multiple signal (AT) and a main channel composite video signal (CVL) by intermediate frequency of the first channel signal source tuned and output in step 50) (hereinafter referred to as IF). 52).

The second tuning unit 57 tunes and outputs a second channel signal source adjacent to a first channel among the high resolution input image RFs received, and a high resolution stereoscopic luminance by intermediate frequency of the second channel signal source. To a second intermediate frequency 56 which outputs a stereo composite video signal YT + CT [YT + CT = (Y −) + YHS + CT] mixed with the signal YT and the chromaticity signal CT of the stereoscopic image. It is composed.

The voice demodulator 61 filters F1 and F2 for filtering the first and second modulated voice signals AM and AS, respectively, from the voice multiplex signal AT, and the filters F1 and F2. Voice demodulator 58 for demodulating and outputting the output of the amplifier, and an amplifier 60 for amplifying and outputting the output of the voice demodulator 58.

The second separating unit 71 low-pass filters the stereoscopic composite image signal YT + CT [YT + CT = (Y −) + YHS + CT] output from the second tuning unit 57 to generate luminance of the stereoscopic image. LPF5 (68) for outputting signal (Y-) and high-pass luminance signal (YHS) that is frequency-shifted by band-filtering the stereo composite video signal (YT + CT) [YT + CT = (Y-) + YHS + CT] ) And a BPF2 70 for outputting a complex signal YHS + CT in which a chroma signal CT of a stereoscopic image is combined.

The third separating unit 75 inputs the composite signal YHS + CT filtered out from the BPF 70 to separate and output the frequency shifted high luminance signal YHS and the chroma signal CT of the stereoscopic image. 72 and an FS2 74 for frequency shifting the frequency shifted high-bandwidth luminance signal YHS output from the COMB 72 and outputting it as a high-band luminance signal YH.

3 is a transmission frequency spectrum diagram of the transmission system of FIG. 1, where 3a is a main channel spectrum and 3b is a subchannel spectrum. The main channel spectrum is output from the first camera and the low pass filtered low pass luminance signal YLL, the chromaticity signal CL of the first camera, and the first and second modulated audio signals AM. The spectrum of (AS) is shown.

The subchannel spectrum includes the luminance signal Y− of the stereoscopic image which is a difference component of the luminance signals YR (YL) output from the first and second cameras, and the high-band luminance signal of the luminance signal YL of the first camera. The frequency shift luminance signal YHS having the frequency shifted component YH and the chroma signal CT obtained by equilibrium modulation of the difference signal CL-CR of the chroma signals CL and CR of the first and second cameras. The spectrum is shown.

Hereinafter, an operation example of the present invention will be described in detail with reference to the above-described configuration diagram and spectral diagram.

First, in describing the present invention, the luminance output of the first camera, for example, the left camera, of two camera output signals arranged in parallel (or at a right angle with a translucent mirror in the center) at 7 cm intervals, which are about the distance between human eyes. Is YL, the chromaticity output is CL, the second camera, for example, the luminance output of the right camera is YR, and the chromaticity output is CR.

Therefore, the luminance signals YL and YR outputted from the first and second cameras, and the chroma signals CL and CR, respectively, differ from each other according to the perspective of the subject and the angle θ (called binocular disparity) between the two cameras and the subject. It will be included.

Here, the closer the distance between the object and the two cameras, the larger the value of θ. In proportion to this, the difference signal of YL-YR and CL-CR also becomes large. In this case, the smaller and farther the subject, the higher the spatial frequency occupied by the subject, but in this case, θ decreases, so that the difference between the luminance and chroma signals given by YL-YR and CL-CR becomes smaller. That is, the luminance difference YL-YR and the chromaticity difference CL-CR components are concentrated at the low end of each camera output.

Accordingly, the difference signal required for the reproduction of the stereoscopic effect can be transmitted with only about one third of the basic signal band without any significant loss of image quality.

In the description of the operation example of the present invention, an example of transmitting the output signal of the left camera to the main channel will be described.

When the luminance signals YL (YR) and chroma signal CL (CR), which are outputs of the left and right cameras placed on the left and right sides of the subject, are respectively input to the circuit of FIG. 1, the luminance signals YL of the left camera are The first mixer 12 and the first separator 17 are simultaneously input to the BRF1 16 and the LPF1 14. At this time, the luminance signal YL is applied to the third mixer 28, which is a video signal mixer for main channel, by the LPF1 14 only the low luminance signal YLL of 4.2 MHz or less.

On the other hand, the chroma signal CL output from the left camera is low pass filtered by the LPF3 24 having a low pass region of 4.2 MHz to form a low pass chroma signal CLL, and the low pass chroma signal CLL is the BM1 26. The signal is input to and output as a balanced modulated color signal CLM.

Therefore, the third mixer 28, which inputs the low luminance signal YLL output from the LPF1 14 and the chroma signal CLM output from the BM1 26, mixes the two signals to form the main channel of the left camera. The composite video signal CVL is input to the CM1 44.

On the other hand, in the case of a voice signal, as in the conventional broadcast, the first voice AL and the second voice AR are FM-FM modulated by a well-known voice multiple signal generator 43 to generate a voice multiple signal AT. The voice multiplex signal AT is input to the CM1 44.

At this time, the CM1 (44) modulates the main channel composite video signal (CVL) output from the third mixer (28) and the audio multiple signal (AT) by channel modulation (CHANNEL N) at a carrier frequency of a predetermined channel. Output the signal S (n).

The frequency spectrum of the modulated signal S (n) output from the CM1 (44) will be described with reference to the low luminance component YLL, the low balance modulated chromaticity signal CLM, and the FM modulated first and second voice signals AM and AS as shown in FIG. 3a. Have.

Meanwhile, the first mixer 12 which inputs both the luminance signals YL (YR) output from the left and right cameras described above mixes the luminance signal YL of the left camera and the luminance signal YR of the right camera. The luminance difference signal YL-YR is output.

In this case, as described above, the luminance difference signal YL-YR of the first mixer 12 becomes a signal component concentrated in the low range of each camera output.

The luminance difference signal YL-YR output from the first mixer 12 is low-pass filtered by the LPF2 18 so that only the luminance signal Y- of the stereoscopic image, which is a low-pass signal, is input to the second mixer 22. Is applied to the terminal.

On the other side of the second mixer 22, the FS1 (20) for frequency shifting the output of the BPF1 (16), which filters out only the high-frequency luminance component (YH) of 4.2 MHz or more of the luminance signal (YL) of the left camera, by -2.2 MHz ) Output terminal is connected.

Accordingly, the second mixer 22 receives the luminance signal Y− of the low-stereoscopic image and the high-frequency luminance signal YHS of the left camera, which is frequency shifted. Therefore, the second mixer 22 outputs a high-resolution stereoscopic luminance signal YT in which the luminance signal Y- of the low-pass stereoscopic image and the frequency-shifted high-frequency luminance signal YHS are mixed to output a channel modulator 2 (CM2) 46. ) Is entered.

On the other hand, the chroma signal (CL) (CR) output from the left and right cameras respectively-. A fourth mixer 30 input to the + terminal mixes the two chroma signals CL and CR to output a chroma signal CL-CR, and the chroma signal CL-CR is a low pass filter. The low pass filtering is performed by the LPF4 32, which is output as a chromaticity signal C- of a stereoscopic image.

The chroma signal C- of the stereoscopic image output from the LPF 32 is balanced-modulated by the balance modulator BM2 34 to be a modulated chromaticity signal CT of the stereoscopic image and applied to the aforementioned CM2 46. .

As described above, the CM2 46 that inputs the high resolution stereoscopic luminance signal YT [YT = (Y −) + (YHS)] and the modulated chromaticity signal CT of the stereoscopic image is a carrier wave of a subchannel adjacent to the main channel. The modulated signal S (n + 1) is output by channel modulation (CHANN and N + 1).

Referring to the frequency spectrum of the modulation signal S (n + 1) output from the CM2 46, the luminance signal Y- of the stereoscopic image which is the luminance difference signal YL-YR of the left and right cameras as shown in FIG. Stereoscopic image that is a modulation signal of the chromaticity signal C- of the stereoscopic image of the high-frequency luminance signal YHS of frequency shifting the high-frequency luminance signal YH of the right camera and the chromaticity difference signal CL-CR of the left and right cameras It includes the chroma signal (CT) of.

Inputting RF output S (n) having the same spectrum as the channel signal CHANNEL N as shown in the 3a diagram, and RF output S (n + 1) having the same channel signal as the channel signal CHANNEL N + 1 as the 3b diagram. The seventh mixer 48 mixes the RF outputs S (n) and S (n + 1) of the two channels and outputs a high resolution stereoscopic image TV RF signal SM occupying the two channels.

The high resolution stereoscopic image TV RF modulated output SM output from the seventh mixer 48 is propagated as in a normal transmission and radiated to the atmosphere. Receiving and reproducing the high resolution stereoscopic image TV RF modulated signal SM is performed by FIG. 2, as follows.

The high-definition stereoscopic image TV RF modulated signal SM received by the conventional TV antenna is input to the tuners TU1 and TU2 50 and 54.

At this time, the TU1 (50) is tuned to the channel signal (CHANNEL N), the channel signal (CHANNEL N) of the mixed signal of the channel signal (CHANNEL N) of the main channel and the channel signal (CHANNEL N + 1) of the sub-channel Signal is inputted to IF1 (52), which is an intermediate frequency demodulation circuit, and TU2 (54) is tuned to channel signal (CHANNEL N + 1) so that only the subchannel (CHANNEL N + 1) signal is IF2 (56). ) Is entered.

At this time, IF1 52 demodulates the spectral signal as shown in FIG. 3A as an intermediate frequency demodulated signal and outputs the multiplexed audio signal AT and the main channel composite video signal CVL.

In addition, IF2 (56) performs intermediate frequency demodulation of the spectral signal as shown in FIG. 3b, and then combines a high resolution stereoscopic image luminance signal (YT) and a stereoscopic image chromaticity signal (CT). CT = (Y-) + YHS + CT] will be output.

The voice multiplex signal AT output from the IF 52 is separated and demodulated into a first voice signal AL and a second voice signal AR by a known voice demodulator 61 and amplified into a predetermined signal. Is output. In addition, the COMBI 66 for inputting the main channel composite video signal CVL outputted from the IF1 52, that is, the composite video signal of the left camera, receives the composite video signal CVL of the main channel from the low-frequency luminance signal of the main channel. YLL) and the main channel chroma signal (CLM) (CLM = CL) for separate output.

At this time, the LPF 68 connected to the output terminal of the IF2 56 outputs a stereo composite video signal output (YT + CT) [YT + CT = (Y −) + YHS that is demodulated and output by the IF2 56 at an intermediate frequency. + CT] is low-pass filtered to output only the high-frequency luminance signal YHS and the luminance signal Y- of the stereoscopic image from which the stereoscopic image tone signal CT is removed to the ninth mixer 78. The BPF2 70 band-pass filters the stereo composite video signal output (YT + CT) [YT + CT = (Y −) + YHS + CT] so that the luminance signal (Y−) of the stereoscopic image, which is a low-pass signal component, is obtained. Only the combined signal YHS + CT of the removed frequency shift high-band luminance signal YHS and the stereoscopic image chromaticity signal CT are output to the COMB2 72.

The COMB2 72, which inputs the composite signal YHS + CT that is band-pass filtered from the BPF2 70, separates the complex signal YHS + CT into a frequency-shifted high-frequency luminance signal YHS and a stereoscopic image. Separate output with the chroma signal (CT).

The frequency shifted high-bandwidth luminance signal YHS output from the COMB2 72 is input to the FS 74. At this time, the FS2 74 shifts the high-frequency luminance signal YHS frequency shifted by -2.2 MHz by +2.2 MHz, converts it into the high-frequency luminance signal YH of the original left camera, and inputs it to the eighth mixer 76. Let's do it.

Therefore, the eighth mixer 76 is the main channel low luminance signal YLL output from the COMB1 66, that is, the low luminance signal YLL of the left camera and the high luminance signal of the left camera output from the FS 74. The luminance signal YL of the left camera mixed with (YH) is output.

On the other hand, the ninth mixer 78 is the luminance signal (Y-) of the stereoscopic image which is the luminance difference signal of the left and right cameras output from the above-described LPF5 (68) and the left camera output from the eighth mixer (76). Luminance signal YL is mixed to reproduce and output the luminance signal YR of the right camera.

That is, since the luminance signal Y- of the stereoscopic image is YL-YR minus the luminance signal YR output from the right camera from the luminance signal YL output from the left camera, YL- (Y-) = YL- ( YL-YR) = YR, only the luminance signal YR of the right camera is output from the ninth mixer 78.

In addition, the tenth mixer 80 has a chromaticity signal CT of a stereoscopic image which is a chromaticity difference signal of the left and right camera images output from the COMB2 72, and a chromaticity signal of the left camera output from the aforementioned COMB1 66. (CLM) (= CL) is mixed to reproduce and output the chroma signal CR of the right camera.

That is, since the chroma signal CT (CY = C-) of the stereoscopic image is a CL-CR obtained by subtracting the chroma signal CR output from the right camera from the signal CL output from the left camera, the tenth mixer 80 is The chroma signal CT (CT = C-) of the stereoscopic image inputted from the chroma signal CLM (CLM = CL) of the left camera output from the COMB1 66 is mixed (subtracted) and CL- (C-) = CL The chroma signal CR of the right camera, where-(CL-CR) = CR, is applied to the CDM2 84.

At this time, the luminance signal YL of the left camera output from the eighth mixer 76 and the chromaticity signal CLM = (CL) of the left camera output from the COMB1 66 are inputted, and The CDM2 84 for inputting the luminance signal YR and the chromaticity signal CRM = CR of the right camera output from the ninth and tenth mixers 78 and 80, respectively, is a conventional color demodulation circuit. The input signal is demodulated to output primary color signals RL, BL, and GL of the left image and primary color signals RR, BR, and GR of the left image, respectively.

Therefore, by using the primary color signal output of each of the CDM1 and CDM2 82 and 84, it can be used in both a shutter type stereoscopic TV having one CRT and a display device for an unstereoscopic stereoscopic TV having two CRTs. .

Here, various conventional techniques can be used with respect to the synchronization technique required for deflection of the left and right video signals.

Therefore, it can be seen that a high resolution stereoscopic image having two transmission channels is transmitted by a calculation of a main signal transmitted to a main channel and a subsignal transmitted to a subchannel, and reception and reproduction of a high resolution stereoscopic image carried on two transmission channels are performed. .

As described above, according to the present invention, a normal video signal is used for the main channel and a stereoscopic image for the subchannel using one main channel and one subchannel neighboring the main channel while maintaining compatibility with existing broadcasting equipment. By carrying a signal and a high-resolution luminance signal, and transmitting the signal of the main channel at the same time, there is an advantage that can transmit and reproduce a high-resolution three-dimensional image signal.

Claims (8)

A stereoscopic image signal transmission system for transmitting first and second image signals, which are taken by first and second cameras photographing different predetermined positions of a subject, as stereoscopic image signals, wherein the first camera and the second camera. A first mixer 12 for mixing the luminance signals YL (YR) respectively output from the camera and outputting the luminance difference signals YL-YR, and a luminance signal YL output from the first camera; Outputs from the first mixer 17 and the first mixer 17 which separates and outputs a low pass luminance signal YLL having a predetermined band or less and a high pass luminance signal YH having a predetermined bandwidth by performing low pass and band pass filtering. Inputs a luminance difference signal YL-YR and a high-band luminance signal YH having a predetermined bandwidth output from the first separator 17 to generate a high-resolution stereoscopic luminance signal YT by a sum operation of the two signals. A high resolution three-dimensional luminance signal generator 23 and the first camera The modulated chromaticity signal CL is filtered and modulated into a signal of a predetermined band or less and outputs a modulated chromaticity signal CLM, and the low luminance signal YLL of a predetermined band or less output from the first separation unit 17 and A main channel video signal generator 29 for calculating the modulated chroma signal CLM and outputting the composite video signal CVL for the main channel, a chroma signal CL and a second output from the first camera; A stereoscopic image chromaticity signal generator 35 for inputting the chromaticity signal CR output from the camera, detecting and modulating the difference signal CL-CR of the two chromaticity signals, and outputting the chromaticity signal CT of the stereoscopic image; And an audio multiple signal generator 43 for outputting an audio multiple signal AT by FM-FM modulation of a predetermined first audio signal AL and the second audio signal AR, and generating the main channel composite video signal. Output of the composite video signal CVL output from the unit 29 and the audio multiple signal output from the audio multiple signal generator 43 A first channel modulator 44 for modulating (AT) at a first channel frequency of a predetermined first carrier wave, and a high resolution stereoscopic luminance signal (YT) output from the high resolution stereoscopic luminance signal generator (23); A second channel modulator 46 for modulating and outputting the chromaticity signal CT of the stereoscopic image output from the stereoscopic image chromaticity signal generator 35 into a second channel signal having a carrier adjacent to a predetermined first channel; 1, a high resolution stereoscopic image signal comprising a seventh mixer 48 for outputting a high resolution stereoscopic image RF signal occupying two channels by mixing the modulation outputs of the second and second channel modulators 44 and 46. Transmission system. The 3D image chromaticity signal according to claim 1, wherein the first separation unit 17 inputs the luminance signals YL output from the first camera and filters the signals into signals of a predetermined band or less. The first low pass filter 14 outputs to the generator 29, and the luminance signal YL is filtered by a signal of a predetermined band to input a high frequency luminance signal YH into the high resolution stereoscopic luminance generator 23. And a first band pass filter (16). 3. The high resolution stereoscopic luminance generator 23 filters the luminance difference signal YL-YR output from the first mixer 12 into a predetermined band and outputs the luminance signal Y- of the stereoscopic image. A first low frequency filter 20 for outputting a high frequency luminance signal YHS that is frequency shifted by frequency shifting the high frequency luminance signal output from the second low pass filter 18 and the first band pass filter 16 ), And the high-resolution luminance signal YHS of the stereoscopic image output from the second low pass filter 18 and the frequency shifted high-frequency luminance signal YHS of the first frequency shifter 20 are added. And a second mixer (22) for outputting a luminance signal (YT). The third low pass filter of claim 2, wherein the main channel composite image signal generator 29 filters the chroma signal CL output from the first camera to a predetermined band or less, and outputs a low-pass chroma signal CLL. (24), a first balance modulator (26) which balance-modulates the low-pass chromaticity signal (CLL) output from the third low pass filter (24) and outputs a modulated color signal (CLM), and the first low And a third mixer 28 for outputting the main channel composite video signal CVL by adding the low luminance signal YLL output from the pass filter 14 and the modulated color signal CLM. Video transmission system. The fourth image of claim 1, wherein the stereoscopic image chromaticity signal generator 35 inputs the signals of the chromaticity signals CL and CR of the first and second cameras to output the chromaticity difference signal CL-CR. A fourth low pass filter 32 for low-pass filtering the chromatic difference signal CL-CR output from the mixer 30 and the fourth mixer 30 and outputting the chroma signal C- of the stereoscopic image; And a second balance modulator 34 which balances the chroma signal C- of the stereoscopic image of the fourth low pass filter 32 and outputs the modulated chromaticity signal CT of the stereoscopic image. Stereoscopic image transmission system. High resolution stereoscopic which receives and reproduces a signal propagated by a high resolution input image RF signal by occupying a predetermined number of channels of the first and second image signals photographed by first and second cameras photographing different predetermined positions of a subject. In a video signal receiving system, an intermediate frequency signal of a main channel signal source having a carrier of a predetermined first channel in a received high resolution stereoscopic image RF signal to output an audio multiplex signal (AT) and a main channel composite video signal (CVL). 1 the tuning section 53 and the sub-channel signal source adjacent to the carrier of the first channel in the received high-resolution stereoscopic image RF signal to obtain a high-resolution stereoscopic luminance signal YT and a chromaticity signal CT of the stereoscopic image. A predetermined first voice AL is input by inputting a second tuning unit 57 that outputs the mixed stereoscopic composite image signal YT + CT and an audio multiple signal AT output from the first tuning unit 53. ) And the predetermined second audio signal AR And a low frequency luminance signal YLL and a low frequency modulated chromaticity signal CLM by filtering the audio demodulation unit 61 for demodulating and outputting the signal, and the main channel composite image signal CVL output from the first tuning unit 53. The first comb filter 66 for separating output and the composite signal YT + CT outputted from the second tuning unit 57 are first and second filtered and the luminance signal Y- of the stereoscopic image is Y-. ) And the second separation unit 71 separating and outputting the combined signal (YHS + CT) and the combined signal (YHS + CT) signal output from the second separation unit 71 to filter the high-frequency luminance signal (YH). ) And a third separation unit 75 separately outputting the chroma signal (CT) of the stereoscopic image, the low luminance signal YLL output from the first comb-shaped filter 66, and the third separation unit ( The eighth mixer 76 outputting the luminance signal YL of the first camera by adding the high-frequency luminance signal YH outputted from 75), and the stereoscopic image output from the second separator 70. Luminance signal (Y-) and phase A ninth mixer 78 for mixing the luminance signal YL of the first camera output from the eighth mixer 76 and outputting the luminance signal YR of the second camera, and the third separator 75; A tenth mixer 80 for mixing the chromaticity signal CT of the stereoscopic image and the modulation chromaticity signal CLM of the first comb-shaped filter 66 to output the chromaticity signal CRM of the second camera; The luminance signal YL of the first camera of the eighth mixer 76 and the main channel modulation chromaticity signal CLM of the first comb-shaped filter 66 are input to demodulate the RL GL BL image signal of the first camera. A first color demodulator 82 to be output, a luminance signal YR of the second camera of the ninth mixer 78, and a chromaticity signal CRM of the second camera of the tenth mixer 80; And a second color demodulator (84) for demodulating and outputting RR, GR, and BL video signals of a camera. 7. The method of claim 6, wherein the second separation unit 71 low-pass filters the stereoscopic composite image signal YT + CT output from the second tuning unit 57 to output the luminance signal Y- of the stereoscopic image. A composite signal YHS in which a fifth low pass filter 68 and a high frequency luminance signal YHS frequency-shifted by performing a band pass filtering on the stereoscopic composite image signal YT + CT and a chromaticity signal CT of the stereoscopic image And a second band pass filter 70 for outputting + CT) to convert the luminance signal Y- and the composite signal YHS + CT of the stereoscopic image to the ninth mixer 78 and the third separator 75. High resolution stereoscopic image signal receiving system characterized in that each output. The method of claim 7, wherein the third separation unit 75 inputs a complex signal (YHS + CT) output from the second band pass filter 70 and the high-frequency luminance signal (YHS) and the stereoscopic image of the frequency shifted A second comb-shaped filter 72 for separately outputting the modulated chromaticity signal CT, and a frequency shifted signal before the frequency shifted high-pass luminance signal YHS frequency shift to output a high-frequency luminance signal YH. High-resolution stereoscopic image receiving system, characterized in that consisting of two frequency shifter (74).

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