CN1149860C - Flicklerless optical synchronous time division stereo TV technique - Google Patents

Abstract

The present invention relates to a 100Hz field frequency flash-free synchronous time division stereoscopic TV technique. High level light synchronization signals are input in frequency multiplication odd field image signals, low level light synchronization signals are input in frequency multiplication even field image signals, the signals are displayed on a TV screen in a 100Hz field scanning frequency manner, and a light-electric transducer converts the light synchronization signals on the screen to electric signals which control a switch of liquid crystal glasses to cause observers to watch left eye images and right eye images in a 100Hz field frequency rate alternate manner by the liquid crystal glasses. Thereby, flash-free time division stereoscopic images are formed in brains of the observers.

Description

The Flicklerless optical synchronous time division stereo TV device

Utilize the 100HZ color television set can under the situation of large-screen, high brightness, show and watch the non-flicker television image.Technology involved in the present invention is: utilize the demonstration of 100HZ color television set and watch flicker free time division type phototiming three-dimensional television image.

At first in the time division type three-dimensional television image, enroll an optical synchronous signal, it can react the position of odd field or even field appearance, at receiving terminal, field frequency is promoted one times, and encode according to frequency multiplication parity field time-division three-dimensional television image mode, when this frequency multiplication time-division, three-dimensional television image showed on screen, the optical synchronous signal that originally enrolled in the time-division three-dimensional television image will show on screen with the frequency doubled light synchronizing signal, utilize a photo-electric conversion element, frequency doubled light synchronizing signal on the video screen is converted to the signal of telecommunication, this signal is being amplified, shaping is handled, formation is with the corresponding to parity field frequency multiplication of the frequency multiplication parity field synchronizing signal synchronizing signal in the 100HZ television set, utilize the square wave oscillation signal of a 1K left and right sides frequency of this signal modulation, form the liquid crystal glasses switch controlling signal, the switch of control liquid crystal glasses, guarantee that the liquid crystal lens before the left eye is opened when showing left-eye image on the video screen, liquid crystal lens before the right eye is closed, and when showing eye image on the television screen, liquid crystal lens before the right eye is opened, liquid crystal lens before the left eye is closed, therefore the observer can watch three-dimensional television image by liquid crystal glasses, because each frequency of this three-dimensional television image is higher than 50HZ, the critical flicker frequency that has surpassed human eye, so spectators can watch the flashless time-sharing stereo TV image.

Below in conjunction with accompanying drawing, the present invention is further specified.

Fig. 1. be basic principle block diagram of the present invention.In first Figure 45, the 1st, the odd field picture signal, the 2nd, the even field picture signal, 3 are still the odd field picture signal, and the 4th, the field sync signal of this picture signal.1,2,3 what reacted is the existence form of time division type three-dimensional television image signal, is the convenience on describing, among the figure with dark color showing odd field image, the no colour specification even field picture signal of usefulness.In second Figure 46, the 5th, odd field picture signal, the 6th, even field picture signal, 7 are still the odd field picture signal, note 8 and 9 in the odd field picture signal among the figure, this is an optical synchronous signal, and it is added in the odd field picture signal in the mode of a high level pulse.It does not change with the odd field picture material, on television screen, demonstrate a bright hot spot, 9 also is optical synchronous signal, it is added in the even field picture signal in a low level pulse mode, it is not equally with even field picture signal content change, the same position display that shows bright hot spot on television screen goes out a dark hot spot, this bright hot spot and dark hot spot alternately show on same position according to parity field, form optical synchronous signal, this optical synchronous signal can show in the mode of a pattern or literal.Among the 3rd Figure 47 the 10,12, the 14th, the odd field picture signal that in the 100HZ receiver, forms after the frequency multiplication, 11, the 13, the 15th, the even field picture signal that in the 100HZ receiver, forms after the frequency multiplication, the 16th, the odd field phototiming high level signal that in the 100HZ receiver, forms after the frequency multiplication, the 17th, the even field low level optical synchronous signal that in the 100HZ receiver, forms after the frequency multiplication.Among the 4th Figure 48 18 is 100HZ television receivers, the 20th, and the optical synchronous signal that bright hot spot reacted that on screen, demonstrates, the 21st, the optical synchronous signal that dark hot spot reacted that on screen, demonstrates.Among the 5th Figure 49 22 and 23 is the liquid crystal glasses that are subjected to optical synchronous signal control, wherein 22 have reacted when the optical synchronous signal of bright hot spot occurring on the video screen, liquid crystal lens before the left eye of liquid crystal glasses is opened, liquid crystal lens before the right eye is closed, left eye can see 18 by liquid crystal glasses like this, and right eye can't see 18.21 have reacted when the optical synchronous signal of dark hot spot occurring on the video screen, liquid crystal lens before the right eye of liquid crystal glasses is opened, liquid crystal lens before the left eye is closed, right eye can see 19 by liquid crystal glasses like this, and left eye can't see 19, right and left eyes is alternately seen the right and left eyes TV image that shows on the video screen, therefore forms three-dimensional television image in observer's brain.Among the 6th Figure 50 24 is 100ZHZ television receivers, the 25th, showing the video screen of image, the 26th, optical synchronous signal, the 27th, photoelectric transducer element, it can be adsorbed on the television screen by a sucker, it is converted to the signal of telecommunication with 26 and sends into amplification and rectification circuit 28,28 are shaped as the rectangular pulse frame synchronizing signal with it sends into frequency multiplier circuit 29 again, be admitted to phase-shift circuit 30 again with 29 phase shifts of field system chronizing impulse signal by the field sync signal after the frequency multiplication 29, so that its odd field and even field synchronizing signal are with odd field in the 100HZ television receiver and even field synchronizing signal phase place complete matching, 32 star oscillating circuits, it produces the square wave about 1K, this square wave is admitted to analog switching circuit 31,31 are subjected to the control from 30 frequency multiplication parity field synchronizing signal, respectively alternately left at the moment liquid crystal lens 34 and the liquid crystal lens 33 before the right eye send switching signal, to guarantee when frequency multiplication odd field signal occurs, liquid crystal lens 34 before the left eye is opened, liquid crystal lens 33 before the right eye is closed, left eye is seen the left eye image that shows on the video screen, and right eye be can't see the left-eye image that shows on the screen, and when frequency multiplication even field signal occurs, liquid crystal lens 33 before the right eye is opened, liquid crystal lens 34 before the left eye is closed, right eye is seen the eye image that shows on the video screen, and left eye be can't see the eye image that shows on the screen, from but flicker free three-dimensional television image that the observer sees.

Fig. 2. be the oscillogram of the each several part signal that the present invention relates to.First Figure 45 and second Figure 46 are identical with first Figure 45 among Fig. 1 and second Figure 46.The 3rd Figure 51 represents the waveform of light electric transducer 27 outputs, 35 expression light electric transducers 27 receive the pulse spike that forms behind the bright hot spot of the optical synchronous signal that shows on the television screen, the cycle of this pulse spike is the frame period as can be seen, frequency is the frame frequency of 100HZ television set, when the dark hot spot of television set display light synchronizing signal, light electric transducer is response not.The 4th Figure 52 represents the regular square-wave pulse 36 that the signal of light electric transducer 27 outputs forms through amplification and rectification circuit 28 backs, and its frequency is a frame frequency.The 5th Figure 53 explanation is after the frame frequency square-wave signal is by the frequency multiplication shaping, and having formed frequency multiplication field sync signal 37, the six Figure 54 explanation is frequency multiplication parity field synchronizing signal 38 with frequency multiplication field sync signal broadening, and this frequency multiplication and broadening are finished by 29.The 7th Figure 55 illustrates through phase-shifter 30 back phase places and is moved, so that the phase place of the frequency multiplication parity field synchronizing signal in frequency multiplication parity field synchronizing signal and the 100HZ television set is consistent, 40 have represented this phase-shift phase.Among 41 the 8th figure 41 are by the square wave oscillation signal about 32 1K that generate, and it is admitted to analog switch 31,31 and is subjected to the 30 frequency multiplication parity field synchronizing signal controls of sending, and forms 43 among the 42 and the tenth Figure 58 among liquid crystal lens control signal the 9th Figure 57.42 and 43 guarantee the liquid crystal lens alternation switch and drive liquid crystal lens with the positive and negative driving voltage that replaces to avoid the liquid crystal polarization.

Fig. 3. be an embodiment.60 and 61 is time-division stereoscopic TV video image playback equipments, the 62nd, and encoder, the 63rd, high-frequency modulator and amplifirer, it is launched the high frequency time-division three-dimensional television signal after modulated through antenna 64.The 65th, the reception antenna of 100HZ television set, the 66th, the 100HZ television receiver, the 67th, the three-dimensional television image that shows on the 100HZ television screen, the 68th, the optical synchronous signal that on this television image, shows, it can be a station symbol pattern or station symbol literal, the 69th, photo-electric conversion element, the 70th, by the reshaper that has the schmidt door circuit, it will form spike by 69 and be shaped as square-wave pulse, the 71st, by 4046 phase locking units that constitute, the 72nd, by 4040 counters that constitute, 72 and 71 constitute frequency multiplier, to be shaped as the frequency multiplication field system chronizing impulse through the frame pulse after 70 shapings, the 73rd, by 4098 monostable circuits that constitute, it is with the frequency multiplication field pulse broadening of 4046 outputs, the 74th, by 40106 phase-shift circuits that constitute, it with the phase place of the frequency multiplication parity field synchronizing signals of 73 outputs with the phase alignment of the frequency multiplication parity field synchronizing signal of 100HZ television receiver 66 inside, the 76th, by the square-wave oscillator about 4011 1K that constitute, it sends into oscillator signal by 4052 analog switches that constitute 75,75 according to controlling its switch by 74 control signals of sending here, make the liquid crystal lens of liquid crystal glasses 79 be controlled the control of signal, when showing the left eye image on the video screen, liquid crystal lens 78 before the left eye is opened, form left eye image 82 in the brain, the liquid crystal lens 77 before the right eye is closed.And when showing the right eye image on the video screen, the liquid crystal lens 77 before the right eye is opened, and forms right eye image 85, and the liquid crystal lens 78 before the left eye is closed.84 and 85 alternately occur in brain, synthetic stereo image 86.

Liquid crystal glasses 79 can be controlled by lead, also can be with the 74 frequency multiplication parity field modulated red external transmitters emission infrared signals that produce, infrared receiving element is installed on liquid crystal glasses is received this infrared signal and the way of its switching electrical signals is realized controlled in wireless.

Claims (3)

1. the present invention relates to a kind of 100HZ field frequency Flicklerless optical synchronous time division stereo TV device, its essential characteristic is, utilize odd field and even field to enroll left eye or eye image signal and right eye or left eye picture intelligence respectively, form a kind of time division type three-dimensional television image signal, enroll the optical synchronous signal of high level in certain position of its odd field or even field picture signal, same position in even field or odd field picture signal is enrolled low level optical synchronous signal, utilize the television receiver of 100HZ field frequency to receive the time division type three-dimensional television signal that this comprises optical synchronous signal at receiving terminal, when carrying out frequency multiplication in receiver inside, formation comprises the frequency multiplication time-division three-dimensional television image signal of frequency doubled light synchronizing signal, when the frequency multiplication of the field of television image signal, utilize frequency multiplication odd field reaction left eye or eye image signal, utilize frequency multiplication even field reaction right eye or left-eye image signal, and with the field-scanning period demonstration with 100HZ on video screen of this signal, utilize a light electric transducer that the optical synchronous signal that shows on the video screen is converted to the signal of telecommunication, and with this signal of telecommunication shaping amplification back formation frequency multiplication frame-synchronizing impulse signal, utilize frequency multiplier circuit with this signal frequency multiplication, broadening, phase shift, the final on all four frequency multiplication parity field of the phase relation synchronizing signal that forms with the inner frequency multiplication parity field of television receiver synchronizing signal, utilize video switch of this signal controlling, this video switch is according to the switching signal of the control output liquid crystal glasses eyeglass of frequency multiplication parity field synchronizing signal, make when showing left-eye image on the video screen, liquid crystal lens before the left eye is opened, liquid crystal lens before the right eye is closed, left eye can be seen the television image of left eye, right eye then be can't see television image, and when showing eye image on the video screen, liquid crystal lens before the right eye is opened, liquid crystal lens before the left eye is closed, right eye can be seen the television image of right eye, left eye then be can't see television image, the observer alternately sees left-eye image and eye image by liquid crystal glasses with the speed of 100HZ field frequency like this, thereby is fused into the time-division stereo-picture of a width of cloth flicker free in observer's brain.

2. the Flicklerless optical synchronous time division stereo TV device described in claim 1, it is characterized in that: this optical synchronous signal is to represent in the mode of a pattern or literal.

3. the Flicklerless optical synchronous time division stereo TV device described in claim 1 is characterized in that: this light electric transducer is that the mode with a sucker is adsorbed on the locational of video screen display light synchronizing signal.

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