RU2256298C1 - Digital stereo television system - Google Patents

Abstract

FIELD: radio communications engineering for ground television networks.

SUBSTANCE: novelty is that prior-art system is provided with following pieces of equipment: on sending end - three video-signal analog-to-digital converters; second lens, third amplifier, and third piezodeflector in photoelectric converter; two dichroic mirrors; three microlenses; three photodetectors; and three preamplifiers; on receiving end - second code processing unit introduced in each code receiving and processing channel; second radiation modulation unit; third amplifier and third piezodeflector; fourth amplifier and fourth piezodeflector; two optical projection systems; and second screen. On receiving end, there are 600 lines with 800 readings per line in each right- and left-hand image. Viewer perceives image on right-hand screen with right eye and that of left-hand screen, with left eye.

EFFECT: provision for producing stereo effect on sending end and reproducing three-dimensional image for viewer on receiving end.

1 cl, 18 dwg, 2 tbl

Description

The invention relates to radio communications technology, can be used for television, starting with the decimeter range in terrestrial TV networks and satellite communications.

The prototype adopted a digital high-definition television system [1], containing a photoelectric converter, three ADCs of a video signal, two ADCs of a sound signal, a sinusoidal oscillator, a frequency synthesizer, three code shapers, two self-propelled pulse distributors, a three-channel radio signal transmitter, on the receiving side an antenna, a touch control unit, three paths for receiving and processing codes, a channel for generating control signals, two sound channels, six pulse units amplifiers, a radiation modulation unit, a frequency divider, a horizontal scanning unit, a first amplifier and a first piezoelectric deflector with an end reflector, a second amplifier and a second piezoelectric deflector with an end reflector, four reference voltage sources and an opaque screen. The transmitting side generates three code streams: video signals E _R , E _G , E _B. two carrier frequencies are used, the receiving side receives three radio signals with three paths for receiving and processing codes, doubles the frequency of the video codes and converts the codes by electron-optical scanning into a color image on a matte screen. The clock frequency in the system is 55 MHz, the occupied band on the air is 363 Hz, the active leader in the frame is 1100, the frame frequency is 25 Hz, the fields in frame 2, the interlaced raster scan. The disadvantage of the prototype is the absence in the system of formation and playback of stereo images.

The aim of the invention is the creation of a stereo image system. The technical result of the claimed system is the formation on the transmitting side of the stereo effect conditions, on the receiving side, the reproduction of a volumetric image for the viewer. The transmitting side forms the right and left images from two positions, the receiving side reproduces the right image on the right screen, the left image on the left screen. The transmitting side generates three streams of codes of the right and left images transmitted in parallel. The frame scan is line-by-line, the frame rate of each image is 25 Hz. Two carrier frequencies are used. Transmission of codes E _RP and E _GP / right image / is performed by the upper side frequency of the first carrier, codes E _VP and E _RL / right and left images / is performed by the lower side frequency of the second carrier, codes E _GL and E _VL / left image / upper side frequency second carrier, 6 MHz video sampling. Information on the color tone is carried by the lateral frequency, and on the color brightness is the code of the amplitude of the video signal. The color saturation is set by the spectral band of the LEDs used in the two emitters. Sound codes are transmitted in three codes at the end of each line. The line frequency is 15 kHz, the number of lines in the frame is 600 / all active /, the raster scan is progressive / progressive /.

The receiving side receives three radio signals with three paths for receiving and processing codes, detects them, selects horizontal and frame sync pulses / SSI, KSI /, doubles the number of samples in the segment from 400 to 800, and reproduces the images with two identical electron-optical scans on the right and left screens, observed by the viewer: right - with the right eye, left - with the left eye. Radiation modulation blocks, elements of two electron-optical scans and two screens are located in the helmet of the viewer, which is worn over the head when watching programs. Technical parameters of the system in the table [1]. The essence of the claimed system is that in a digital stereo television system containing a photoelectric converter, three ADCs, two ADCs of a sound signal, a sinusoidal oscillator and a frequency synthesizer, three code shapers, two self-propelled pulse distributors, a three-channel radio signal transmitter, on the receiving side an antenna, a touch control unit, three paths for receiving and processing codes, a channel for generating control signals, two sound channels, six pulse amplification units Iteli, one radiation modulation unit, a frequency divider and a horizontal scanning unit, a first amplifier and a first piezoelectric deflector with an end reflector, a vertical scanning unit, a second amplifier and a second piezoelectric deflector with an end reflector, 1-4 reference voltage sources and an opaque screen the transmitting side of the fourth, fifth, sixth ADCs, a second lens, a third amplifier and a third piezoelectric deflector with a reflector at the end, the fifth and sixth voltage sources, the third and fourth dichro are introduced into the photoelectric converter mirrors, fourth, fifth, sixth micro lenses, fourth, fifth, sixth photodetectors, fourth, fifth, sixth pre-amplifiers, on the receiving side, a second code processing unit is introduced into each code receiving and processing path, a second radiation modulation unit, a third amplifier are introduced and a third piezoelectric deflector with an end reflector, a fourth amplifier and a fourth piezoelectric deflector with an end reflector, 5-8 sources of reference voltages, two projection optical systems, a second matte screen and a viewer helmet, in which Both radiation modulation units, 1–4 amplifiers, 1–4 piezoelectric deflectors, reference voltage sources, projection optical systems, and both matte screens are included.

Block diagram of the transmitting side in FIG. 1, progressive scanning of the raster in FIG. 2, the forms of the control voltages of the scans in Fig. 3, the structure of the digital streams in Fig. 4, the ADC of the video signal in Fig. 5, the construction of the piezoelectric deflector in Fig. 6, the ADC of the sound signal in Fig. 7, the _encoder of video signals E _RP and E _GP / E and E _{VI RL} / 8, the code generator E and E _{is dl} in Figure 9, a block diagram of the receiving side 10, a schematic diagram of a bipolar amplitude detector 11, the code processing unit 12, block horizontal sync / frame sync / in Fig.13, the summing amplifier in Fig.14, the modulation unit radiation 15, the frequency spectra of the signals of the transmitter 16, the timing chart of operation of the system 17, the image scanning arrangement of elements in the viewer's helmet principle in Figure 18.

The transmitting side includes / Fig. 1 / a photoelectric converter 1, which is a sensor of video signals of two images of the right / E _RP , E _GP , E _VP / and left / E _RL , E _GL , E _VL / including the first lens 2 / right /, the first piezoelectric deflector 3 with a reflector at the end located in the rear focal plane of the right lens 2, the first source 4 of positive reference voltage, the second source 5 of negative reference voltage, the first amplifier 6, the second piezoelectric deflector 7, the front end of which has two faces located at an appropriate angle to each other and with a reflector on each side, the second amplifier 8, the third source 9 of the positive reference voltage, the fourth source 10 of the negative reference voltage, the second lens / left /, the third piezoelectric deflector 12 with a reflector at the end located in the rear focal plane the left lens 11, the third amplifier 13, the fifth source 14 of the positive reference voltage, the sixth source 15 of the negative reference voltage, block 16 line scan from the master oscillator 17 and the output stage 18, bl 19 frame scan from the And element 20, the master oscillator 21 and the summing amplifier 22, the first 23, the second 24 dichroic mirrors, the first 25, the second 26, the third 27 micro lenses, the first 28, the second 29, the third 30 photodetectors, the first 31, the second 32 , third 33 pre-amplifiers, third 34 and fourth 35 dichroic mirrors, fourth 36, fifth 37, sixth 38 micro lenses, fourth 39, fifth 40, sixth 41 photodetectors, fourth 42, fifth 43 and sixth 44 pre-amplifiers, Photoelectric Converter 1 is included composition of the transmitting television camera s, which includes the first ADC 45 / video E _rp / second ADC 46 / video E _GP / third ADC 47 / video E _BP / fourth ADC 48 / video signal E _RL / fifth ADC 49 / video and E _dl / , sixth ADC 50 / video signal E _VL /. The second lens 11 is located to the left of the lens 2, its optical axis is parallel to the optical axis of the lens 2, the distance between them corresponds to the optimal stereoscopic effect for the viewer, the transmitting side includes the first ADC 51 and the second ADC 52 sound signals, the inputs of which are accompanied by sound signals E _ЗВ1 and Е _ЗВ2 , the master oscillator 53 of the sinusoidal oscillations, the synthesizer 54 frequencies, the first 55, the second 56, the third 57 code _generators , respectively, _ЕРП and Е _ГП , Е _ВП and Е _RЛ , Е _GL and Е _ВЛ , the first 58 and second 59 self-propelled pulse distributors and a radio signal transmitter 60, including three channels, the first channel comprises serially connected first carrier frequency amplifier 61, a single-band signal driver 62 and an output amplifier 63, the second channel contains a second carrier frequency amplifier 64, a single-band signal driver 65 and an output amplifier 66, third the channel contains a single-band signal driver 67 and an output amplifier 68. Each of the single-signal signal drivers 62, 65, 67 consists of a series of annular ulyatora and bandpass filter [2, s.234] that filters one of the sideband frequencies in the spectrum of the amplitude-modulated carrier. The ADCs 45-50 are identical (Fig. 5/), each containing a serially connected amplifier 69 and a piezoelectric deflector 70 with a reflector at the end, a positive reference voltage source 71, a negative reference voltage source 72, an emitter from a pulsed LED 73, aperture diaphragm 74, and a micro lens 75 , line 76 of a multi-element photodetector and encoder 77. All used piezoelectric deflectors are end bimorph piezoelectric elements with a light reflector at the end, are structurally executed / Fig.6/ the same [3 p.118] from the first 78 and w There are 79 piezoelectric plates, an internal electrode 80, a first 81 and a second 82 external electrodes. One end of the piezoelectric plates is fixed in the holder 83, and a light reflector 84 is located on the free end. The end of the piezoelectric deflector 7 / Fig. 1/ is made of two faces at an appropriate angle to each other, each face has its own reflector for diffusing the reflected rays from the two lenses on different directions. The ADC 51, 52 are identical (Fig. 7/), each includes a series-connected voltage divider 85, a key block 86, a matching amplifier 87, an amplifier 88 and a piezo-deflector 89 with a reflector at the end, a positive voltage reference source 90, a negative reference voltage source 91, emitter from a pulsed LED 92, a slit aperture 93 and a micro lens 94, a multi-element photodetector line 95, a first decoder 96, an encoder 97 and a second decoder 98, connected in series with a pulse counter 99, a third decoder 100 and bl approx. 101 registers.

The first 55 and second 56 code generators are identical / Fig.8/, each contains four channels. The first and second channels are identical. The first includes serially connected the first block of AND elements 102, the first 103, the second 104 OR elements, and the first output switch 105, and the first self-propelled pulse distributor 106, the second channel includes the second block 107 of the AND elements, the third 108, the fourth 109 OR, and the second an output switch 110, and a second self-propelled pulse distributor 111. The third channel includes a third block 112 of AND elements, a fifth OR element 113 and a third self-propelled pulse distributor 114, the fourth channel includes a fourth block 115 of AND elements, a sixth OR 116 element and a fourth self-propelled pulse distributor 117. The code generator includes the first 118 and second 119 keys, the pulse counter 120 and the decoder 121. The information inputs of the code generator 55, 56 are: the first are the inputs of the elements AND block 102, the second are the inputs of the elements AND block 107, the third are the inputs of the third and fourth elements blocks 112, 115, the fourth is the third input of the second OR element 104, the fifth is the third input of the fourth OR element 109. The control inputs are: the first are the combined inputs of the first key 118, the second key 119 and the counting input of the counter 120, the second are the combined signal inputs keys 105, 110, the third - the control input of pulse counter 120. The output is the combined output of the output keys 105, 110. In the first shaper 55 of the codes, the decoder has a third output, which is the second output of block 55 connected to the input of the first 58 self-propelled pulse distributor, through which the start signal U _П is supplied at the moment of a 399 discrete pulse of the last line of the frame .

The third generator 57 codes includes / FIG. 9/ two identical channels, the first includes series-connected block 102 of AND elements, the first 103, second 104 OR elements and output switch 105, and a self-propelled pulse distributor 106, the second channel includes block 107 of AND elements, the first 108, second 109 OR elements, and an output switch 110, and a self-propelled pulse distributor 111. The first and second information inputs are the inputs of the AND elements of blocks 102, 107. The third and fourth information inputs are the second inputs of the OR elements 104, 109. The control inputs are: the first are the combined inputs of the self-propelled distributors 106, 111 pulses, the second are the combined signal inputs of the output keys 105, 110. The output is the combined output of the output keys 105, 110.

The receiving side (Fig. 10/) comprises an antenna, a touch control unit 122, first, second, third codes reception and processing paths, a channel for generating control signals and two sound channels. The first path for receiving and processing codes receives and processes the codes of video signals E _RP and E _GP and contains a radio signal receiving unit 123, a radio frequency amplifier 124, a bipolar amplitude detector 125, and a code processing channel including a first 126 and a second 127 pulse shapers, the first 128, the second 129 registers, first 130, second 131 code processing blocks. The second path for receiving and processing codes receives and processes codes E _VP and E _RL and comprises a radio signal receiving unit 132, a radio frequency amplifier 133, a bipolar amplitude detector 134, and a code processing channel including a first 135, a second 136 pulse shapers, a first 137, a second 138 registers, the first 139 and second 140 code processing blocks. The third path for receiving and processing codes receives and processes codes E _GL and E _VL and contains a radio signal receiving unit 141, a radio frequency amplifier 142, a bipolar amplitude detector 143, and a code processing channel including a first 144, a second 145 pulse shapers, a first 146, a second 147 registers, the first 148 and second 149 code processing blocks, the receiving part contains the first 150, second 151, third 152, fourth 153, fifth 154 and sixth 155 blocks of pulse amplifiers, a viewer helmet 156 in which the first modulation block 157 of radiation elements of the electron-optical scan of the right image, including the first amplifier 158 and the first piezoelectric deflector 159 with a reflector at the end, the first source of positive reference voltage 160, the second source of negative reference voltage 161, the second amplifier 162 and the second piezoelectric deflector 163 with reflector at the end, third a positive reference voltage source 164, a fourth negative reference voltage source 165, a first projection optical system 166 and a first matte screen 167, a second modulation unit 168 of cross-sections, elements of the electron-optical scan of the left image, including the third amplifier 169 and the third piezoelectric deflector 170 with a reflector at the end, the fifth source of positive reference voltage 171, the sixth source of negative reference voltage 172, the fourth amplifier 173 and the fourth piezoelectric deflector 174 with the end reflector, seventh a positive reference voltage source 175, an eighth negative reference voltage source 176, a second projection optical system 177 and a second matte screen 178. The receiving side includes a 2: 1 frequency divider 179 and a horizontal scanning unit 180, a frame scanning unit 181 from an AND 182 element, a master oscillator 183 and a summing amplifier 184. The control signal generation channel includes serially connected horizontal sync / SSI / 15 kHz separation block 185, a frequency synthesizer 186 , a key 187, a pulse counter 188 and a decoder 189, a frame sync / CSI / 25 Hz separation unit 190, and a second 2: 1 frequency divider 191. The sound channels are identical, and each includes a first key 192, a second key 193, a first block of sound registers 194, a second block of sound registers 195 connected in series by the DAC 196, a low-pass filter 197, a power amplifier 198 and a speaker 199.

Blocks 130, 131, 139, 140, 148, 149 of the code processing are identical (Fig. 12/), each includes a trigger 200, a first 201, a second 202 key blocks, a first 203, a second 204, a third 205, a fourth 206 registers, a first 207, second 208, third 209 delay element blocks, fifth 210 and sixth 211 registers and the adder 212. The information input is the combined inputs of the key blocks 201, 202, the control input is the trigger input 200 and the control input of the adder 212. The output is the bitwise combined outputs of the registers 210, 211 and a delay element block 209. The horizontal sync pulse allocation unit 185 and the frame sync pulse allocation unit 190 are identical (Fig. 13), each includes a first 213, a second 214, a third 215 pulse counters, a first 216, a second 217, a third 218 elements NOT, a first 219 and a second 220 elements AND diode. The inputs of block 185 are the counting inputs of the pulse counters, the output is the output of the second element And 220. The summing amplifiers 22 and 184 / FIG. 14/ are identical, each includes a pulse counter 221 and a decoder 222, the first 223 and second 224 keys, the first 225 and second 226 pulse shapers, and an output amplifier 227. The inputs are a counting input of a counter 221 and a first input of an output amplifier 227, the output of which is the output of the unit. The control input is the combined inputs of the second control input of the key 223, the first control input of the key 224 and the control input of the pulse counter 221. Blocks 157, 168 of the radiation modulation / FIG. 15/ are identical, each includes an emitter 228 of three primary colors / R, G, B / and an optical system 229. The emitting plane of the emitter 228 is in the rear focal plane of the optical system 229, in the front focal plane of which the reflector of the first piezoelectric deflector 159 / third piezoelectric deflector 170 / is located, Fig.10. The radiating side of the radiation modulation unit 157/168 / through the piezoelectric deflectors 159/170 /, 163/174 / and the projection optical system 166/177 / is optically coupled to the screen 167/178 /. The inputs of the emitter 228 of the block 157 are connected to the outputs of the blocks 150, 151, 152 of the pulse amplifiers, the inputs of the emitter 168 are connected to the outputs of the blocks 153, 154, 155 of the pulse amplifiers. The clock frequency in the system is:

600 _lines × 25 Hz × 400 _counts × 8 _times = 48 MHz,

where: 600 _lines × 25 Hz = 15 kHz, line frequency,

400 - the number of encoded samples in the lad on the transmitting side,

8 _times - the number of bits in the code.

The photoelectric converter 1 generates six analog video signals of the right and left images that come from the pre-amplifiers 31, 32, 33 in the ADC 45, 46, 47, from the pre-amplifiers 42, 43, 44 in the ADC 48, 49, 50. The photo-electric converter 1 and six ADC structurally arranged to transmit television camera, which are output six video codes: right image _rp E, E _{GP, BP} E, E left image _RL, E _dl E _VL. ADCs convert analog video signals to 8-bit codes. Codes of video signals with ADC 45, 46 arrive at a frequency of 6 MHz in the shaper 55 codes. Codes of video signals from the ADC 47, 48 go to the shaper 56 codes, codes of video signals from the ADC 49, 50 go to the shaper 57 codes. Shapers 55, 56, 57 codes convert parallel codes of video signals and sound into serial ones and replace the representation of units from pulses with positive and negative half-sinusoids of a 48 MHz monofrequency from a 54 frequency synthesizer. The master oscillator 53 generates sine waves with a stability of 10 ⁻⁷ . A frequency synthesizer 54 generates and issues 25 Hz pulses from the first output to the control input of the 59 pulse self-propelled distributor, 6 MHz pulses from the second output to the control inputs / clock / ADC 45-50, to the first control inputs of the shapers 55, 56, 57 codes and the first control inputs of the ADC 51, 52, from the third output - 45 kHz pulses to the second inputs of the ADC 51, 52, from the fourth output sinusoidal oscillations of 48 MHz to the second control inputs of the shapers 55, 56, 57 codes, from the fifth output - 15 kHz pulses the first input of block 19, to the third control inputs shapers 55, 56 codes and the third control inputs of the ADC 51, 52, from the sixth output pulses of 12.5 Hz to the second input of block 19, from the seventh output pulses of 7.5 kHz to the input of block 16, from the eighth and ninth outputs sinusoidal oscillations of the first / 432 MHz / and the second / 576 MHz / carrier frequencies, respectively, to the first and second inputs of the transmitter 60 radio signals.

The ADC 51, 52 convert two sound signals into 16-bit codes that come from the ADC 51 to the third information input of the block 55, from the ADC 52 to the third information input of the block 56. Self-propelled pulse distributor 58 with the start signal U _P coming from the second output block 55 at the time of 399 pulse discretization of the line produces a code of eight units 11111111, which is the ID code in the 400th sample of the line. The SSI code in sequential form is supplied to the third inputs of the OR elements 104 in blocks 55, 56, 57. The second self-propelled pulse distributor 59 with the arrival of the start signal U _P 25 Hz from the first output of the block 54 provides the CSI code 11111111 to the third inputs of the elements OR 109 in blocks 55, 56, 57, which is the CSI code in the 400th sample of the last line of the frame. Block 16 consists of a master oscillator 17 and an output stage 18. The control voltage of a triangular isosceles form (Fig. 3/) from block 16 is amplified in an amplifier 6 and drives the piezoelectric deflector 3 in an oscillatory motion with a frequency of 7.5 kHz, line scanning is with a frequency of 15 kHz . The signal from the amplifier 6 is supplied to the internal electrode 80 / Fig.6/, the voltage from the source 4 is applied to the external electrode 81, the voltage from the source 5 is applied to the external electrode 82. When a control voltage is applied to the internal electrode, deformation / bending / piezo plates occur [3 , c.122], the end face with a light reflector 84 rotates and deflects the vertical strip of the image. The image of the vertical strip is fed to the right reflector of the piezoelectric deflector 7, performing a frame scan. Lens 2 / Fig. 1/ creates a right color image in the focal plane in which the reflector of the piezoelectric deflector 3 is located. The reflector has a width of at least 0.02 mm and a length of at least 12 mm: 0.02 mm × 600 length. The dimensions of the deploying element are 0.02 × 0.02 mm. The lens 11 creates a left image in the focal plane in which the reflector of the piezoelectric deflector 12 is located. Its reflector has the same dimensions as the reflector of the piezoelectric deflector 3. According to the control voltages from the amplifier 13, the piezoelectric deflector 12 vibrates the end face with the reflector relative to the left reflector of the piezoelectric deflector 7, scanning on the lines of the left image. Block 16 provides a control voltage that first increases in proportion to time, the reflectors of the piezoelectric deflectors 3, 12 with uniform speed and synchronously rotate from left to right. Upon reaching the edge of the raster, the sweep voltage decreases in proportion to time, the reflectors return at the same speed. The control voltage period is equal to the duration of two lines, therefore, to build a raster of 600 lines at 25 frames per second, the piezoelectric deflectors 3, 12 oscillate with a frequency of 7.5 kHz, the line frequency is 15 kHz. The line scan in the raster is line-wise / Fig.2/ and without reverse moves. Images of two vertical lines are fed to the right and left reflectors of the piezoelectric deflector 7, performing a frame scan / vertical / simultaneously of two images / right and left /. The width of the reflector of the piezoelectric deflector 7 is not less than 0.02 mm, the length of each is not less than 8 mm: 0.02 mm × 400 counts. The piezoelectric deflector 7 oscillates with a frequency of 12.5 Hz, which is 25 frames per second / 3 /, frame scan also without reverse moves. The spectrum of the amplitude-modulated signal / Fig.16/ consists of a carrier and two side frequencies. One of the side frequencies and the carrier itself in the information sense are redundant. Therefore, in each driver 62, 65, 67 / Fig. 1/ of a single-band signal, the carrier frequency is suppressed [2, p.234] and one of the side frequencies is filtered out. Block 62 gives the upper side frequency 480 MHz from the first carrier / 432 MHz / to the amplifier 63, block 65 gives the lower side frequency 528 MHz from the second carrier / 576 MHz / to the amplifier 66, block 67 gives the upper side frequency 624 MHz to the output amplifier 68 from the second carrier.

The summing amplifier 22/184 / performs / Fig. 14 / the summation of the line voltage from the generator 21 with pulses of 15 kHz from block 54/185 /. Each line impulse moves the line at the end of its course by a step / in one line / at the moment of the ray entry over the edge of the screen on both sides, we get 600 lines of the frame, all active. The purpose of the blocks 221 to 226 is to apply to the second input of the output amplifier 227 at the right time, positive pulses of one amplitude and negative pulses of a different amplitude and duration for another frame. Before the frame scan, the signal U _about the element And 20 resets the counter 221 pulses. The counter 221 is 10-bit, it counts line pulses of 15 kHz, the counting cycle is 600 pulses. The signal U _O opens the first key 223, which transmits horizontal pulses to the first pulse shaper 225, which produces positive pulses to the second input of the output amplifier 227, followed by a scan of the first frame. With the arrival of the 600th pulse, the counter 221 generates a code number 600/1001011000 /, which is decrypted. The pulse from the decoder 222 closes the key 223 and opens the second key 224, which transmits horizontal pulses to the second pulse shaper 226, issuing negative pulses to the second input of the output amplifier 227, followed by a scan of the next frame. With the arrival of the next signal U _{O, the} process repeats.

Mixed color rays reflected from the right reflector of the piezoelectric deflector 7 are directed: red R colors from the first dichroic mirror 23 to the lens 25, which collects it into the photodetector 28, blue B colors pass the first dichroic mirror, are reflected from the second 24 and are collected by the lens 26 into the photodetector 29, green G colors pass through both mirrors 23, 24, and the lens 27 collects in the photodetector 30.

From the photodetectors, the analog video signals are fed to the pre-amplifiers 31, 32, 33. The rays from the left reflector of the piezoelectric deflector 7 go through a similar process. The analog video signals are sent to the pre-amplifiers 42, 43, 44. From the pre-amplifiers, the analog video signals are sent to the corresponding ADCs 45-50, which have one conversion principle, which consists in scanning the beam (Fig. 5/) from the LED 73 by the piezoelectric reflector 70 reflector along the plane of the entrance pupils of the photodetectors of the line 76 of the multi-element photodetector. The light signal is converted into an electrical pulse, exciting the corresponding input bus of the encoder 77, issuing a code for the instantaneous value of the video signal. The conversion is performed with a sampling rate of 6 MHz, the sampling pulses are fed to the input of the LED 73 from block 54 / output 2 /. The slit aperture 74 and the micro-lens 75 form a beam with an aperture equal to the size of the input window of the photodetector in line 76. A pulsed LED AL402A with a pulse rise time of 25 ns, satisfying a sampling rate of 6 MHz / 166 ns /, was adopted as a radiation source. The photodetectors in line 76 are avalanche photodiodes of the APD with a response time of 10 ns. Line 76 contains 255 photodetectors for encoding video signals with an 8-bit code. The output of each photodetector is connected to the corresponding input of the encoder 77, which is represented by the K155IV1 chip [4, p.231] with a response time of 20 ns. The encoder generates codes from 00000001 to 11111111: the first photodetector in line 76 corresponds to the code 00000001, the second to the code 00000010, the third to 00000011, etc., the 255th to the code 11111111. The conversion time is 30 ns / 20 ns + 10 ns / or 33 · 10 ⁶ prev / s. The information generation rate for each ADC is 96 Mbps: 6 MHz × 2 × 8 _times . The ADCs 51, 52 convert two audio signals into 16-bit codes. During one line of the ADC, three codes are generated, sampling 45 kHz / 15 kHz × 3 /. To obtain codes with 16 bits, the transmission coefficient of the voltage divider 85 is changed, Fig.7. Block 86 keys has seven keys for connecting the corresponding stage of the divider 85 to the matching amplifier 87, which is an emitter follower. The multi-element photodetector line 95 contains 1024 photodetectors and converts the sound signal into a 10-bit code, 2 ¹⁰ . The resolution is adopted at 10 μV, the coding range of the 95 line is 0-0.01024 V. The conversion of the signals into a code exceeding 2 ¹⁰ is performed by the first decoder 96, the encoder 97, the second decoder 98, the voltage divider 85 and the key block 86. With their use, the coding range of the sound signal is 0-0.65536 V, i.e. 2 ¹⁶ . The pulse from each photodetector enters the decoder 96, from it to the encoder 97. If there is no signal at the input of the divider 85, a code of one zeros arrives at the input of the second decoder 98. The signal from the first output of the decoder 98 opens the first key in block 86, determining the transfer coefficient 1.0 of the voltage divider 85, when the signal reaches a value of 2 ¹⁰ , a signal appears on the second output of the decoder 98, opening the second key in block 86 and closing the first key, the transmission coefficient becomes 0.5, with code 2 ^{11 the} coefficient 0.25, with code 2 ¹² - 0.125, with code 2 ¹³ - 0.0625, with code 2 ¹⁴ - 0.03125, with 2 ¹⁵ - 0.015625, remaining until the code 2 ¹⁶ . When the signal amplitude decreases, the reverse process, the transmission coefficient increases. Units in codes are represented by the presence of an impulse, zeros by their absence. Over the course of one line, the encoder 97 issues three codes that enter the block 101 of the registers, which contains three 16-bit registers. In the process of receipt, the codes are shifted from register to register by shift pulses U _sd . In block 101, three codes are accumulated, which are successively generated at the moments 557, 398, 399 of the line sampling pulses (Fig. 4/) in the first 55 and second / s ADC 52/56 code generators. The signals _Uout come from the third decoder 100 at the moments 397, 398, 399 pulses of the sampling line. The output signals form a counter of 99 pulses and a decoder 100. The counter 99 is 9-bit, counts 6 MHz, the cycle counts 400 pulses, is reset by the leading edge of the pulse U _O at the time of the 400th pulse of line sampling. The first shaper 55 codes gives from 1 to 396 codes of video signals E _RP and E _GP , three sound _codes , _OSI code and in the last line of the frame the CSI code / 4 /. Units in E _RP codes _are represented by positive half-sinusoids of the monofrequency 48 MHz / multiple carrier frequency / with a stability of 10 ^-7 . Units in E _GP codes _are represented by negative half-sinusoids of the 48 MHz monofrequency. The second generator 56 codes gives from 1 to 396 codes of video signals E _VP and E _RL , three sound codes, SSI code, CSI code. The third _generator 57 codes gives from 1 to 396 codes of video signals E _GL , E _VL , SSI code, CSI code.

The operation of the shaper 55/56 / codes, Fig. 8. Codes with ADC 45 in a parallel form with a frequency of 6 MHz are supplied to the inputs of block I of elements 102, and from ADC 46 to inputs of block 107 of I elements. Eight pulses are received in series from the inputs of block I and eight, respectively, from block 106 and 111. The starting pulse for them is pulses of 6 MHz. From the outputs of the elements and blocks 102, 107, the pulses of the codes sequentially with a frequency of 48 MHz through the OR elements 103, 104 and 108, 109 open for their duration of 20.8 ns the output keys 105 and 110, to the signal inputs of which sine waves with a frequency of 48 MHz are received. The output key 105 in the open state passes one positive sine wave, the output key 110 in the open state passes one negative sine wave. At the output of the shaper _55/56 / codes, the units in the codes E _{RP are} represented by positive half-sine _waves , in codes E _GP by negative half-sine _waves . Zeros appear to be the absence of both. The output signal from the shaper 55/56 / codes is represented by full and incomplete sinusoids with a frequency of 48 MHz. These signals modulate the carrier frequency in block 62/65 /, Fig.17. Each sound code consists of two parts of 8 bits: the first represents 1-8 bits and goes to the first inputs of the AND elements of block 112, the second represents 9-16 bits and goes to the first inputs of the AND elements of block 115. From block 112, the code pulses through the element OR 113 are fed to the second input of the OR element 104, from block 115, the pulses of the codes are sent through the OR element 116 to the second input of the OR element 109. The keys 118, 119 are used to separate the codes of the video signals from the sound codes. The key 118 is opened by the signal from the first output of the decoder 121 at the time of the 400th sample of the line and the key 119 is closed. The key 118 is in the open state from 1 to 396 samples of the line and is closed by the signal from the second output of the decoder 121 at the moment of 397 sample of the line. The key 119 is opened by the signal from the second output of the decoder at the moment of 397 sample of the line and passes three sound codes at the moments 397, 398, 399 of sample of the line to the inputs of the output keys 105, 110. At the moment of 399 sample of the line from the third output of the decoder 121, the signal U _p is sent self-propelled distributor input 58 pulses. Block 58 provides in a sequential form to the third input of the second element OR 104 the SSI code, which is the 400th sample of the line in each line. With the last line of the 600th frame in the frame, the self-propelling pulse distributor 59 issues the CSI code 11111111 to the third input of the OR element 109, which is the 400th sample of the line / Fig. 4/. A 25 Hz start signal to block 59 is received from the first output of block 54. Self-propelled valves 58, 59 are made according to [5, p.274]. The process of the third generator 57 codes is similar to the operation of the driver 55 and simpler, it does not generate sound codes.

The first channel of the transmitter 60 radio signals emits the upper side frequency of 480 MHz from the first carrier, with a stability of 10 ^-7 oscillations, the occupied band on the air is 48 Hz or 96 Hz. The second channel emits the lower side frequency of 528 MHz from the second carrier, occupied band ± 52.8 Hz or 105.6 Hz. The third channel emits an upper side frequency of 624 MHz from the second carrier, occupied band ± 62.4 Hz or 124.8 Hz. In total, the band on the air is 326.4 Hz.

The receiving side receives three radio signals, amplifies them, detects sine waves based on the polarity, divides the codes into channels, selects horizontal and frame sync pulses, generates two carrier frequencies, doubles the number of samples per line and reproduces the right and left images by electron-optical scans on the right and left screens. Three radio signals are received by the blocks 123, 132, 141 (Fig. 10/) of the radio signal reception, which are selectors of the decimeter band channels / ACS / with electronic tuning, and perform the reception of radio signals in the range 470-790 MHz. Each unit includes an input circuit, a radio frequency amplifier, and a mixer / VT2 / [6, p. 132, Fig. 4.2]. The band-pass filter of the radio frequency amplifier in each range is tuned by applying an offset voltage to the varicaps o the electronic switch [6, p. 86, Fig. 2.55] of the touch control unit 122, which is a program selection unit. The amplified radio signal through the communication loop is fed to the emitter of the mixer / VT2 /, here, the frequency corresponding to the carrier transmitting side, necessary for detecting a single-band signal [7, p. 146], is supplied from the frequency synthesizer 186. The local oscillator circuit and the IF filter, available in SKD-24 [6, p.132, Fig. 4.2], are not needed. The signal from the VT2 collector, which is the output signal of the 123/132, 141 / block, is fed to the input of the radio frequency amplifier 124/133, 142 /, where it is amplified to the required value and fed to the input of the bipolar amplitude detector 125/134, 143 /. The second group of inputs of the frequency synthesizer 186 is connected to the second group of outputs of block 122. When the transmission channel is turned on, the voltage from the corresponding diode determines the output of two frequencies to the third inputs of blocks 123 / first carrier /, 132, 141 / second carrier frequency, output 5 of block 186 /. Bipolar amplitude detectors 125, 134, 143 are made according to the circuit diagram of Fig.11. Diode D1 emits a positive envelope of the modulating signal. Diode D2 from the selected modulating signal separates the envelope of the positive half-sine wave, diode D3 from the modulating signal selects the envelope of the negative half-sine wave. From the first output of the bipolar amplitude detector, the detected positive half-sine waves are fed to the input of the first driver 126/135, 144 / pulses, from the second output, the detected negative half-sine waves are fed to the input of the second driver 127/136, 145 / pulses. The pulse shapers are made according to the scheme of an asymmetric trigger with emitter coupling [8, p.209], which forms rectangular pulses from harmonically changing signals. The pulses from the formers have one polarity and a duration equal to the pulse duration in the codes on the transmitting side. After turning on the power of the receiving side, the keys are in a closed state. The operating procedure of the receiving side is determined by control signals from the channel for generating control signals. The decisive role belongs to block 185 of the selection of horizontal sync pulses. The condition for the emergence of the SCI from block 185 is the simultaneous arrival of three code pulses of 8 units from three shapers 126, 135, 144. With the arrival of three codes 11111111, the unit 185 gives an output of an SSI pulse of 15 kHz. At least one zero will always be present in the codes of video signals, especially in three codes at the same time, and by zero the counters in block 185 are reset to zero. And only with the arrival of three codes 11111111 the counters do not reset to zero and an SSI pulse appears at the output of block 185. According to the SSI, frequency synchronization is performed in the 186 frequency synthesizer. Its own frequency stability of 10 ^-6 . Adjustment of its oscillations for the frequency and phase of the master oscillator of the transmitting side is carried out on the leading edge of the SSI from block 185. A frequency synthesizer 186 generates 6 MHz pulses from the first output, 45 kHz pulses from the second output to output sound codes from blocks 194, 195, from the third output 48 MHz clock pulses, from the fourth and fifth - sinusoidal oscillations of two carrier frequencies, respectively, of the received program to the third inputs of blocks 123, 132, 141. Codes from the shapers 126, 127, 135, 136, 144, 145 pulses in sequential form enter the registers respectively Naturally 128, 129, 137, 138, 146, 147, filling in their codes, take a parallel form. 6 MHz sampling pulses provide codes in parallel form to the corresponding code processing units 130, 131, 139, 140, 148, 149 and reset the registers. The code processing units are identical, they double the number of samples in each line by obtaining intermediate / average / sample values between each passing and subsequent codes. Blocks perform the addition of the previous and subsequent codes and dividing the sum code in half / by 2 /.

The operation of the code processing unit 130, FIG. 12.

Each code when doubling the samples is used twice: once as the previous one, second time as the next, so block 130 has four registers 203, 204, 205, 206. With the arrival of the first pulse / 6 MHz / to the trigger 200, the pulse from the first output of the trigger U _vyd1 gives 0 code from register 204 and 0 code about register 205 and resets their bits. The code from register 204 arrives at the first inputs of adder 212, the code about register 205 goes directly to the sixth register 211 and through diodes to the second inputs of adder 212. At the same time, the signal U _vd1 is an open signal U _from for key block 201. The public keys of block 201 pass 1 code through block 207 of delay elements into registers 203, 204. Each delay block includes 8 delay elements. Block 207 delays the code by 10 ns so that there is no overlap of the incoming code and issued from the registers 203, 204. “1 code” fills the registers 203, 204. Block 202 delays the codes by 176 ns: 166 ns to restore the codes to follow another, 10 ns to exclude the overlap of the incoming code issued from the registers 205, 206. The adder 212 performs the addition of two codes, the K555IM6 chip is used as an adder [4, p. 258] with an addition time of 24 ns. The division of the sum code by two is performed by shifting the sum code by one digit so that the least significant digit of the sum code / is discarded as the division of the decimal number by ten /. A shift by one bit is performed by connecting the outputs of the adder 212 to the inputs of the delay unit 209:

outputs of block 212 0 1 2 3 4 5 6 7 8 ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ inputs of block 209 1 2 3 4 5 6 7 8

выдается с блока 209 в блок 150 импульсных усилителей. С приходом второго импульса в триггер 200 сигнал U_выд2 со второго его выхода выдает из регистра 211 код №2 "0 код" в блок 150, с регистра 206 выдает "0 код" в сумматор 212, "1 код" из регистра 203 в регистр 210 и через диоды в сумматор 212 и открывает блок 202 ключей. Регистры 205, 206 заполняются кодом "2 код". Код №2 из регистра 211 выдавался за кодом №1 через 83 нс, регистр 211 хранил код №2 166 нс, но первая половина хранения приходится на сложение в сумматоре 24 нс и задержку в блоке 209 59 нс. Далее сумматор 212 производит сложение 0 код + 1 код, сумма делится на два при выдаче ее в блок 209, с которого код N3

выдается в блок 150.Bit 0 is a carry bit for the sum of codes. When doubling the code samples in a line, the codes follow with a sampling rate of 12 MHz, i.e. after 83 ns. Addition takes 24 ns, therefore, block 209 must delay the code for another 59 ns / 83-24 /. After the addition of codes, division and delay in block 209, code No. 1

issued from block 209 to block 150 of pulse amplifiers. With the arrival of the second pulse in trigger 200, the signal U _vy2 from its second output generates code No. 2 "0 code" from register 211 to block 150, from register 206 it issues "0 code" to adder 212, "1 code" from register 203 to register 210 and through the diodes to the adder 212 and opens the key block 202. Registers 205, 206 are filled with the code "2 code". Code No. 2 from register 211 was issued for code No. 1 after 83 ns, register 211 stored code No. 2 166 ns, but the first half of the storage was due to addition in the adder 24 ns and a delay in block 209 59 ns. Next, the adder 212 performs the addition of 0 code + 1 code, the sum is divided by two when it is issued to block 209, from which code N3

issued in block 150.

. В триггер 200 приходит четвертый импульс, с выхода триггера сигнал U_выд2 /он же U_выд4/ выдает с регистра 211 код №6 "2 код", из регистра 203 выдает "3 код" в регистр 210 и в сумматор 212, из регистра 206 выдает "2 код" в сумматор и открывает блок 202 ключей, регистры 205, 206 заполняются кодом "4 код". Идет сложение 2 код + код в сумматоре 212, деление на два, и с блока 209 следует код N7

. С приходом в триггер пятого импульса сигнал U_выд1 /он же U_выд5/ выдает из регистра 210 код №8 "3 код", выдает из регистра 205 "4 код" в регистр 211 и в сумматор, из регистра 204 "3 код" в сумматор и открывает блок 201, регистры 203, 204 заполняются кодом "5 код". Идет сложение в сумматоре 3 код + 4 код, деление на два, и с блока 209 выдается код №9

. С приходом шестого импульса в триггер 200 выдается с регистра 211 код №10, далее процессы повторяются. Выходы регистров 210, 211 и блока 209 поразрядно объединены. Коды с блоков 130, 131, 139, 140, 148, 149 обработки кодов в параллельном виде поступают в соответствующие блоки 150-155 импульсных усилителей с частотой 12 МГц. Блоки импульсных усилителей представлены микросхемами 533АП6 [4, c.128] c временем срабатывания 18 нс. Каждый блок импульсных усилителей включает 8 импульсных усилителей, по числу разрядов в коде. Блоки 157, 168 модуляции излучения /фиг.15/ выполняют яркостную модуляцию излучателем 228 соответственно значениям кодов видеосигналов. Блок 157 выполняет яркостную модуляцию луча правого изображения, блок 168 выполняет яркостную модуляцию луча левого изображения. Излучатель 228 содержит 24 светодиода: 8 - красного цвета излучения, 8 - зеленого цвета, 8 - синего цвета излучения. Применяются светодиоды HL МР фирмы "Хьюлетт-паккард" [9, c.71]. Для красного излучения приняты светодиоды HL MP-AL 00 с силой света 0,4 кд, длиной волны 0,59 мкм и токе 0,02 А, для зеленого излучения приняты светодиоды HL МР-АМОО с силой света 0,8 кд, длиной волны 0,526 мкм и токе 0,02 А, для синего цвета излучения приняты светодиоды HL МР-АВОО с силой света 0,3 кд, длиной волны 0,475 мкм и токе 0,02 А. Распределение светодиодов одного цвета по весам разрядов в табл.1.With the arrival of the third pulse in the trigger 200, the signal U _exp1 / same U _exp3 in a sequential account / generates code No. 4 "1code" from register 210, issues a "2 code" code from register 205 to register 211 and through diodes to adder 212, s register 204 "1 code" into the adder 212, opens the key block 201, the registers 203, 204 are filled with the code "3 code". The addition in the adder is 1 code + 2 code, division by two, and code No. 5 is issued from block 209

. The fourth pulse arrives at trigger 200, from the trigger output the signal U _out2 / also U _out4 / issues code No. 6 “2 code” from register 211, issues “3 code” from register 203 to register 210 and to adder 212, from register 206 gives "2 code" to the adder and opens the key block 202, registers 205, 206 are filled with the code "4 code". There is an addition of 2 code + code in the adder 212, division by two, and code N7 follows from block 209

. With the arrival of the fifth pulse in the trigger, the signal U _vyd1 / aka U _vyd5 / issues code No. 8 "3 code" from register 210, issues code 4 from register 205 "to code 211 and to the adder, from register 204" 3 code "to the adder and opens the block 201, the registers 203, 204 are filled with the code "5 code". There is an addition in the adder 3 code + 4 code, division by two, and from block 209 code No. 9 is issued

. With the arrival of the sixth pulse in the trigger 200 is issued from the register 211 code No. 10, then the processes are repeated. The outputs of the registers 210, 211 and block 209 are bitwise combined. Codes from blocks 130, 131, 139, 140, 148, 149 of processing the codes in parallel form enter the corresponding blocks 150-155 of pulse amplifiers with a frequency of 12 MHz. Blocks of pulse amplifiers are represented by 533AP6 microcircuits [4, p. 128] with a response time of 18 ns. Each block of pulse amplifiers includes 8 pulse amplifiers, according to the number of bits in the code. Blocks 157, 168 modulation of radiation / Fig.15/ perform brightness modulation by the emitter 228, respectively, the values of the codes of the video signals. Block 157 performs luminance modulation of the beam of the right image, block 168 performs luminance modulation of the beam of the left image. The emitter 228 contains 24 LEDs: 8 - red radiation, 8 - green, 8 - blue radiation. HL MP LEDs of the Hewlett-Packard company are used [9, p. 71]. For red radiation, LEDs HL MP-AL 00 with a light intensity of 0.4 cd, a wavelength of 0.59 μm and a current of 0.02 A are adopted, for green radiation, LEDs HL MP-AMOO with a light intensity of 0.8 cd, a wavelength of 0.526 μm and a current of 0.02 A; for blue radiation, HL MP-AVOO LEDs with a light intensity of 0.3 cd, a wavelength of 0.475 μm and a current of 0.02 A were adopted. The distribution of LEDs of the same color by discharge weight in Table 1.

Table 1 Discharge number in code 1 senior rank 2 3 4 5 6 7 8 young. bit LEDs per discharge 1 1 1 1 1 1 1 1 Multiplicity of the filter 1 2 ^x 4 ^x 8 ^x 16 ^x 32 ^x 64 ^x 128 ^x

The total radiation of 24 LEDs of three colors of the emitter 228 is mixed by the optical system 229 when focusing in a color spot on the reflector of the piezoelectric deflector 159/170 /. Brightness modulation is performed by switching on the radiation in the emitter 228 LEDs, respectively, the weight of the discharge. The brightness, saturation and hue of the resulting color on the screen is determined by the total energy and the mutual ratio of the three colors R, G, B of the emitter. The resolving element on the reflector of the piezoelectric deflector 159/170 / adopted 0.02 × 0.02 mm, the length of the reflector adopted 2 mm / to facilitate alignment /. The length of the piezoelectric reflector reflector 163/174 / should be at least 16 mm / 0.02 mm × 800 counts /, width up to 1 mm / to facilitate alignment /. The projection optical system 166/177 / is represented by a mirror-lens system [10, p. 370], including a spherical mirror, a flat mirror with an inclination of 45 ° relative to the optical axis of the spherical mirror and a correction lens. A flat mirror [11, p.188] allows you to reduce the direct distance to the screen 167/178 /. The magnification of image magnification by the projection optical system is determined by the size of the screen. The option of doubling, 2 ^{x is} accepted. In this embodiment, the image sizes on the screens 167, 178 with a scan line width on the screen of 0.05 mm are:

horizontal / 0.05 mm × 800 count / × 2 = 80 mm,

vertical / 0.05 mm × 600 lines / × 2 = 60 mm,

diagonally 100 mm / 4 inches /. Removal of screens from the eyes with a field of view of each 30 ° 108 mm. The principle of placement of elements of electron-optical scans and screens in the helmet 156 of the viewer in Fig. 18. To watch the program, the helmet is put on the head [12, p.616], the right eye observes the right image on the right screen, the left eye - the left image on the left screen. The total maximum luminous intensity of the emitter 228, taking into account that the LEDs of all colors have a light intensity of 0.3 cd blue, is:

where: 3 - the number of colors in the emitter 228,

0.3 cd - light intensity of the blue LED,

in parentheses - in the numerator, the number of LEDs by digits, in the denominator their coefficients in binary code.

Losses of radiation from the emitter 228 to the reflector of the second piezoelectric deflector 163/174 / are received 10 times, in the projection system to the screen another 12 times, a total of 22 times. The maximum brightness of one deploying element of 0.05 × 0.05 mm / 0.0025 mm ² / is:

where: 1.78 cd - the radiation power of the emitter 228,

22 - the frequency loss of radiation,

0,0025 · 10 ^-6 m ² - the area of the deploying element on the screen.

The piezoelectric deflector 159/170 / according to the control voltages from the amplifier 158/169 / produces a horizontal scanning of the beam on the reflector of the second piezoelectric deflector 163/174 /, performing a vertical scan based on the control voltages from the amplifier 162/173 /. A condition for issuing a frame sync pulse from block 190 is the simultaneous arrival of three codes 11111111 from pulse former 127, 136, 145 pulses at the counting inputs of the pulse counters. The key 187 is opened by the SSI pulse, the 9-bit counter 188 keeps a pulse count of 6 MHz, the counting cycle is 400 pulses. With the arrival of a 396 line sampling pulse, the decoder 189 generates a signal U _{from the} first output, opening the keys 192, 193, passing three sound codes into blocks 194, 195 of sound registers containing three 8-bit registers. Block 194 receives 1-8 bits of a sound code, block 195 receives 9-16 bits of a sound code. From the block registers 194, 195, codes with signals _Ud 45 kHz are issued to digital-to-analog converters 196, which convert the codes into analog audio signals that pass low-pass filters 197, are amplified in power amplifiers 198 and reproduced by loudspeakers 199. With the arrival of 188 400 line pulse decoder 189 with a signal from the second output closes the keys 192, 193, resets the counter 188 and closes the key 187. With the arrival of the next signal SSI to the control input of the key 187, the process is repeated.

System operation

From the photodetectors 28, 29, 30 and 39, 40, 41, six analog video signals after amplification in the preliminary amplifiers are fed to the ADC 45-50. Two audio signals are fed to the ADC inputs 51, 52. Video signals are converted to 8-bit parallel codes with a sampling rate of 6 MHz, audio signals are converted to 16-bit parallel codes with a sampling of 45 kHz. Shapers 55, 56, 57 codes form a serial from parallel codes and replace the representation of units from pulses with positive and negative half-sinusoids of the 48 MHz monofrequency in them. The clock frequency in the system is 48 MHz, the oscillation stability is 10 ^-7 . On the transmitting side, 600 lines of a frame of 400 samples each are encoded in the right and left images. The raster scan is line-by-line, frequency is 15 kHz, frame rate is 25 Hz. The information is transmitted by three channels of the transmitter 60. The video signals of the right and left images are transmitted simultaneously, the first channel transmits signal codes E _RP and E _GP , the second - E _VP and E _RL , the third - E _GL and E _VL . The total occupied band on the air is 326.4 Hz. The data transfer rate is 288 Mbps. The receiving side simultaneously receives three radio signals by three paths of receiving and processing codes, amplifies them, detects, extracts horizontal and frame sync pulses, the frequency synthesizer 186 reproduces two carrier frequencies, the codes of video signals are sent through their channels, blocks 130, 131, 139, 140, 148, 149 double the number of samples per row. Codes of video signals with a frequency of 12 MHz are received in the corresponding blocks of 150-155 pulse amplifiers. Blocks 157 and 168 perform luminance modulation of emissions, electron-optical scanning of the right image is performed by blocks 158, 160, 161, 162, 164, 165 and piezo-deflectors 159, 163 on the screen 167. Electron-optical scanning of the left image is performed by blocks 169, 171, 172 , 173, 175, 176 and piezo-deflectors 170, 174 on the screen 178. The projection optical systems 166, 177 perform a corresponding magnification of the images. Stereo sound is reproduced by two sound channels. Playable right and left frames each have 600 lines with 800 samples per line. The frame format is 4: 3, the resolution elements in the frame are 480000. To view the transmission of helmets, there must be the number of spectators.

Technical parameters of the transmitting and receiving sides are given in table 2.

table 2 Technical specifications Values Transmission side Color coding of the right and left images 2: 2: 2 / E _R , E _G , E _B / Range used 480-790 MHz Carrier frequencies two: 432 MHz, 576 MHz Transmission of video signal codes, E _RP , E _GP 480 MHz high side.f ₁ E _VP , E _RL 528 MHz lower side. f ₂ E _dl, E _HVL 624 MHz upper side.f ₂ System Clock 48 MHz / 600 · 25 · 400 · 8 / Occupied band on air 326.4 Hz Number of active lines / frame rate 600/25 Hz Scan left and right frames line by line The number of encoded samples per line 400 Video Sampling Rate 6 MHz / 600 · 25 · 400 / Line Scan / Line Frequency 7.5 kHz / 15 kHz Line length 66, 6 μs Coding method separate, linear PCM Video coding 255 level, 2 ⁸ , 8 times. Audio sampling 45 kHz Sound coding 65536 level, 2 ¹⁶ , 16 times. Information transfer rate 288 Mbps, / 48 · 2 · 3 / Receiving side Color coding 4: 4: 4 Number of active lines / frame rate 600/25 Hz The number of encoded samples per line 800/400 × 2 / Video Sampling Rate 12 MHz / 6 × 2 / Playback speed 576 Mbps Frame resolution 480000/600 × 800 / Frame format 4: 3 Image perception at the same time: right eye on right: screen, left - on the left screen

Sources of information

1. Patent No. 2214693, cl. H 04 N 11/24, bull. No. 29, 2003, prototype.

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3. Fridland M.V., Soshnikov V.G. "Automatic control systems in video recording devices", Moscow, 1988, p.118, fig.5.5, p.122, fig.5.10.

4. Digital integrated circuits, Minsk, 1991, S. 128, 231, 258.

5. Ilyin V.A. Remote control and telemetry. M., 1982, p. 274.

6. Brodsky M.A. Color television sets, Minsk, 1988, p. 86, fig. 2.55, p. 132, fig. 4.2.

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Claims (1)

Digital stereo television system,  containing the transmitting side,  including photoelectric converter,  first,  second,  third analog-to-digital converters (ADCs),  the inputs of which are connected to the corresponding outputs of the photoelectric converter,  the first and second ADCs of the sound signal,  to the information inputs of which sound signals are given,  serially connected sine oscillation generator and frequency synthesizer,  first,  second and third code generators,  first and second self-propelled pulse distributors and a radio signal transmitter,  containing three channels  Frequency synthesizer outputs are connected:  the second and third outputs are connected respectively to the first and second control inputs of the first and second ADCs of the sound signal,  the eighth and ninth outputs are connected respectively to the first and second inputs of the radio transmitter,  the first information input of the first code generator is connected to the output of the first ADC,  the control input of the first self-propelled pulse distributor is connected to the second output of the first code generator,  the first channel of the radio signal transmitter includes a series-connected amplifier of the first carrier frequency,  single-band signal conditioner,  the second input of which is connected to the first output of the first code generator,  and an output amplifier,  the second channel includes a series-connected amplifier of the second carrier,  single-band signal conditioner,  the second input of which is connected to the output of the second code generator,  and an output amplifier,  the third channel includes a serially connected shaper of a single-band signal,  the second input of which is connected to the output of the third code generator,  and an output amplifier,  each single-band signal driver includes a ring modulator and a bandpass filter connected in series,  the photoelectric converter contains a lens,   the first piezoelectric deflector with a reflector at the end,  located in the focal plane of the lens,  a second piezoelectric deflector with a reflector at the end,  optically coupled to the reflector of the first piezoelectric deflector,  serially connected line scan unit,  the input of which is connected to the seventh output of the frequency synthesizer,  and the first amplifier,  the output of which is connected to the first input of the first piezoelectric deflector,  the first source of positive reference voltage  the output of which is connected to the second inputs of the first amplifier and the first piezoelectric deflector,  a second source of negative reference voltage,  the output of which is connected to the third inputs of the first amplifier and the first piezoelectric deflector,  serially connected frame scan unit,  the first and second inputs of which are connected to the fifth and sixth outputs of the frequency synthesizer,  and a second amplifier,  the output of which is connected to the first input of the second piezoelectric deflector,  a third source of positive reference voltage,  the output of which is connected to the second inputs of the second amplifier and the second piezoelectric deflector,  a fourth source of negative reference voltage,  the output of which is connected to the third inputs of the second amplifier and the second piezoelectric deflector,  first and second dichroic mirrors,  located one after another and against the reflector of the second piezoelectric deflector,  three micro lenses  three photodetectors,  three preamplifiers,  whose outputs are:  photoelectric converter outputs,  the input window of the first photodetector is optically connected through the first micro lens and the first dichroic mirror with a reflector of the second piezoelectric deflector,  the input window of the second photodetector is optically connected through the second micro lens and through both dichroic mirrors with a reflector of the second piezoelectric deflector,  the input window of the third photodetector is optically connected through a third micro lens,  a second dichroic mirror and through the first dichroic mirror with a reflector of the second piezoelectric deflector,  the frame scan unit contains a series-connected element And  master oscillator and summing amplifier,  the second input of which is connected to the first input of the AND element,  the control input of the summing amplifier is connected to the output of the element And,  first,  second,  the third ADCs are identical and each is made of a series-connected amplifier and a piezoelectric deflector with a reflector at the end,  source of positive reference voltage  the output of which is connected to the second inputs of the amplifier and piezoelectric deflector,  negative voltage reference  the output of which is connected to the third inputs of the amplifier and piezoelectric deflector,  emitter from a pulsed LED,  slit diaphragm and micro lens,  line of multi-element photodetector and encoder,  the input of the multi-element photodetector line is optically connected to the piezoelectric reflector,  and its outputs are connected to the inputs of the encoder,  the outputs of which are the outputs of the ADC,  whose control input is the pulse LED input,  the first and second ADCs of the sound signal are identical and each includes a series-connected voltage divider,  key block  matching amplifier  amplifier and piezoelectric deflector with a reflector at the end,  source of positive reference voltage  the output of which is connected to the second inputs of the amplifier and piezoelectric deflector,  negative reference voltage source  the output of which is connected to the third inputs of the amplifier and piezoelectric deflector,  emitter from a pulsed LED,  slit diaphragm and micro lens,  line of multi-element photodetector,  the input of which is optically connected to the piezoelectric reflector,  serially connected first decoder,  the inputs of which are connected to the corresponding outputs of the multi-element photodetector line,  an encoder and a second decoder,  the outputs of which are connected to the corresponding inputs of the first decoder and the inputs of the key block,  contains a series-connected pulse counter,  third decoder and register block,  the other inputs of which are connected to the outputs of the encoder and the first control inputs are connected to the outputs of the third decoder,  ADC input is voltage divider input,  the first control input is the counting input of the pulse counter,  the second is the combined input of the pulsed LED and the control input of the register block,  the third is the control input of the pulse counter,  the output is the outputs of the register block,  the first and second code generators are identical,  each contains four channels,  whose outputs are combined  the first channel includes a series-connected first block of AND elements,  the first and second elements OR and the first output key,  and the first self-propelled pulse distributor,  the second channel includes a series-connected second block of elements AND,  the third and fourth elements OR and the second output key,  and a second self-propelled pulse distributor,  the second inputs of the first block of elements And are connected to the outputs of the first self-propelled pulse distributor,  the second inputs of the second block of elements And are connected to the inputs of the second self-propelled pulse distributor,  the third channel includes a series-connected third block of AND elements and a fifth OR element,  and a third self-propelled pulse distributor,  the output of the fifth OR element is connected to the second input of the second OR element,  the fourth channel includes a fourth block of AND elements and a sixth OR element, connected in series  and a fourth self-propelled pulse distributor,  the output of the sixth OR element is connected to the second input of the fourth OR element,  the second inputs of the third and fourth blocks of elements And are connected to the outputs of the third and fourth self-propelled pulse distributors,  the first and second code generators include the first and second keys,  and series-connected pulse counter and decoder,  two outputs of which are connected respectively to the first and second control inputs of the first and second keys,  the output of the first key is connected to the inputs of the first and second self-propelled pulse distributors,  the output of the second key is connected to the inputs of the third and fourth self-propelled pulse distributors,  the output is the combined outputs of the output keys,  in the first code generator, the decoder also has a third output,  which is the second output of the first code generator,  the third code generator contains two identical channels,  each of which includes a series-connected block of AND elements,  the first and second elements OR and the output key,  and a self-propelled pulse distributor,  the second inputs of the blocks of elements And are connected to the outputs of the self-propelled pulse distributors of their channel,  the outputs of the output keys are combined and are the output of the third code generator,  and containing the receiving side,  including antenna  touch control unit  three paths for receiving and processing codes,  the inputs of which are connected to the antenna,  the second inputs are connected to the first,  group of outputs of the touch control unit,  includes the first to sixth blocks of pulse amplifiers,  serially connected frequency divider,  line scan unit  the first amplifier and the first piezoelectric deflector with a reflector at the end,  the first source of positive reference voltage  the output of which is connected to the second inputs of the first amplifier and the first piezoelectric deflector,  a second source of negative reference voltage,  the output of which is connected to the third inputs of the first amplifier and the first piezoelectric deflector,  serially connected frame scan unit,  a second amplifier and a second piezoelectric deflector with a reflector at the end,  a third source of positive reference voltage,  the output of which is connected to the second inputs of the second amplifier and the second piezoelectric deflector,  a fourth source of negative reference voltage,  the output of which is connected to the third inputs of the second amplifier,  and a second piezoelectric deflector,  the first radiation modulation unit,  comprising an optical system and an emitter of three primary colors,  including the corresponding number of LEDs of each color and located in the rear focal plane of the optical system,  in the front focal plane of which the reflector of the first piezoelectric deflector is located,  the reflector of the second piezoelectric deflector is optically connected to the reflector of the first piezoelectric deflector,  which is optically connected to the radiating side of the radiation modulation unit,  whose inputs are connected to the outputs of the first,  second  third blocks of pulse amplifiers,  and includes a matte screen,  each path for receiving and processing codes contains a series-connected radio signal receiving unit,  whose first input is connected to the antenna,  the second group of inputs is connected to the first group of outputs of the touch control unit,  radio frequency amplifier,  bipolar amplitude detector and code processing channel,  including the first and second pulse shapers,  the inputs of which are connected respectively to the first and second outputs of a bipolar amplitude detector,  first and second registers,  the information inputs of which are connected to the outputs of the first and second pulse shapers, respectively  and a code processing unit,  the receiving side includes two sound channels,  each of which includes a first key and a first block of sound registers connected in series,  the second key and the second block of sound registers,  the inputs of the first and second keys of the first sound channel are connected to the outputs of the first and second pulse shapers in the first path of receiving and processing codes,  the inputs of the first and second keys of the second sound channel are connected to the outputs of the first and second pulse shapers in the second code receiving and processing path,  and series-connected digital-to-analog converter (DAC),  the inputs of which are connected to the outputs of the first and second blocks of sound registers,  low pass filter  power amplifier and speaker  includes a channel for generating control signals,  comprising a sequentially connected horizontal sync pulse allocation unit and a frequency synthesizer,  serially connected key,  pulse counter and decoder,  and a frame sync selection block,  three inputs of the horizontal sync pulse allocation block are connected to the outputs of the first pulse shapers in the first,  second  third paths for receiving and processing codes,  three inputs of the frame sync pulse allocation unit are connected to the outputs of the second pulse shapers in the first,  second  third paths for receiving and processing codes,  the second group of inputs of the frequency synthesizer is connected to the second group of outputs of the touch control unit,  the first output is connected in parallel to the first control inputs of 1-6 registers in the code processing channels and to the signal input of the key in the channel for generating control signals,  the second output is connected to the first control inputs of the first and second blocks of sound registers in the sound channels,  the first control input of the key is connected to the output of the horizontal sync pulse allocation block,  the first output of the decoder is connected to the first control inputs of the first and second keys in the sound channels,  the second output of the decoder is connected in parallel to the second control inputs of the first and second keys in the sound channels,  to the control input of the pulse counter and to the second control input of the key,  the inputs of the frequency divider block and the first input of the vertical block are connected to the output of the horizontal sync pulse allocation block,  the frame scan unit includes a series-connected element And,  master oscillator and summing amplifier,  the output of which is the output of the frame scan unit and is connected to the first input of the second amplifier,  the second input of the summing amplifier is connected to the first input of the And element,  its control input is connected to the output of the AND element,  the summing amplifiers in the personnel units of the receiving and transmitting sides are identical,  each contains a serially connected pulse counter and a decoder,  first and second keys,  first and second pulse shapers and an output amplifier,  the signal inputs of the keys and the counting input of the pulse counter are combined and are the second input of the summing amplifier,  the first input of which is the first input of the output amplifier,  first control input of the first key,  the second control input of the second key and the control input of the pulse counter are combined and are the control input of the summing amplifier,  the second control input of the first key and the first control input of the second key are combined and connected to the output of the decoder,  the output of the first key is connected to the input of the first pulse shaper,  the output of the second key is connected to the input of the second pulse shaper,  the outputs of the pulse shapers are combined and connected to the second input of the output amplifier,  the output of which is the output of the summing amplifier,  code processing units are identical and each includes a trigger,  first to fourth registers,  first - third blocks of delay elements,  fifth and sixth registers,  adder and the corresponding number of diodes,  the information inputs of the first and second registers are connected to the outputs of the first block of delay elements,  the outputs of the first register are connected to the inputs of the fifth register and through diodes to the first inputs of the adder,  the outputs of the second register are connected to the first inputs of the adder,  the information inputs of the third and fourth registers are connected to the outputs of the second block of delays,  the outputs of the third register are connected to the inputs of the sixth register and through diodes to the second inputs of the adder,  the outputs of the fourth register are connected to the second inputs of the adder,  the outputs of which are connected to the inputs of the third block of delay elements,  fifth outlets  the sixth registers and the third block of delay elements are bitwise combined and are outputs of the code processing unit,  control inputs of the first,  the fourth and sixth registers are connected to the second output of the trigger,  control inputs of the second,  third and fifth registers are connected to the first output of the trigger,  the input of which and the control input of the adder are the control input of the code processing unit,  a horizontal sync pulse allocation unit and a frame sync pulse allocation unit are identical and each includes 1-3 pulse counters,  1-3 items are NOT,  the first and second elements And and the diode,  the outputs of the first and second pulse counters are connected to the inputs of the first element And,  whose output and the output of the third pulse counter are connected to the inputs of the second AND element,  the output of which is the output of the block,  inputs of 1-3 elements are NOT connected respectively to 1-3 counting inputs of pulse counters,  which are 1-3 block inputs,  the outputs of the elements are NOT and the output of the second element AND through the diode are combined and connected in parallel to the control inputs of the pulse counters,  characterized in  that a fourth is introduced on the transmitting side,  fifth and sixth ADCs  the control inputs of which and the control inputs of the first,  second  the third ADC is connected to the second output of the frequency synthesizer,  to the second input of which the first control inputs of 1-3 code formers are connected,  the first output of the frequency synthesizer is connected to the input of the second self-propelled pulse distributor,  the fourth output is connected to the second control inputs of the first,  second  third code formers,  the fifth output is connected to the third control inputs of the first,  second shapers codes and to the third control inputs of the first and second ADC sound signal,  in the first shaper codes, the first information input is the inputs of the first block of AND elements,  connected to the output of the first ADC,  the second information input is the inputs of the second AND elements,  connected to the outputs of the second ADC,  the third information input is the inputs of the third and fourth blocks of AND elements,  connected to the outputs of the first ADC sound signal,  the fourth and fifth information inputs are the third inputs of the second and fourth elements OR,  connected to the outputs of the first and second self-propelled pulse distributors,  in the second code generator, the first information input is the inputs of the first block of AND elements,  connected to the outputs of the third ADC,  the second information input is the inputs of the second block of AND elements,  connected to the inputs of the fourth ADC,  the third information input is the inputs of the third and fourth blocks of AND elements,  connected to the outputs of the second ADC sound signal,  the fourth and fifth information inputs are the third inputs of the second and fourth elements OR,  connected to the outputs of the first and second self-propelled pulse distributors,  in the third code generator, the first information input is the inputs of the block of elements AND of the first channel,  connected to the outputs of the fifth ADC,  the second information input is the inputs of the block of elements AND of the second channel,  connected to the outputs of the sixth ADP,  the third and fourth information inputs are the second inputs of the second elements OR of the first and second channels,  connected to the outputs of the first and second self-propelled pulse distributors,  in the photoelectric converter, the free end face of the second piezoelectric deflector is made of two faces at an appropriate angle to each other,  each face of which has its own reflector,  the reflector of the right side is optically connected to the reflector of the first piezoelectric deflector,  a second lens is introduced into the photoelectric converter,  located to the left of the first lens at an appropriate distance and whose optical axis is parallel to the optical axis of the first lens,  a third piezoelectric deflector with a reflector at the end,  which is located in the focal plane of the second lens and is optically connected to the left (second) reflector of the second piezoelectric deflector,  third amplifier  the first input of which is connected to the output of the horizontal scanning unit,  the output is connected to the first input of the third piezoelectric deflector,  fifth source of positive reference voltage  the output of which is connected to the second inputs of the third amplifier and the third piezoelectric deflector,  sixth source of negative reference voltage,  the output of which is connected to the third inputs of the third amplifier and the third piezoelectric deflector,  introduced the third and fourth dichroic mirrors,  located one after another and against the left (second) reflector of the second piezoelectric deflector,  fourth,  fifth,  sixth micro lens,  fourth,  fifth,  sixth photodetectors,  fourth,  fifth,  sixth preamplifiers,  the outputs of which are the outputs of the photoelectric converter,  the input window of the fourth photodetector is optically connected through the fourth micro-lens and the third dichroic mirror with the left reflector of the second piezoelectric deflector,  the input window of the fifth photodetector is optically connected through the fifth micro-lens and through both dichroic mirrors with the left reflector of the second piezoelectric deflector,  the input window of the sixth photodetector is optically connected through the sixth micro lens,  the fourth dichroic mirror and through the third dichroic mirror with the left reflector of the second piezoelectric deflector,  the outputs of the fourth to sixth photodetectors are connected respectively to the inputs of the fourth to sixth preamplifiers,  the outputs of which are connected respectively to the inputs of the fourth to sixth ADCs,  in the transmitter of the radio signals, the first input of the shaper of the single-band signal of the third channel is connected to the output of the amplifier of the second carrier frequency,  on the receiving side, a second code processing unit is introduced into each code processing channel,  the inputs of which are connected to the outputs of the second register,  the inputs of the first code processing unit in each code processing channel are connected to the outputs of the first register,  the second control inputs of the first and second registers of each channel are connected to the third output of the frequency synthesizer,  control inputs of all code processing units are connected to the first output of the frequency synthesizer,  the fourth output of which is connected to the third input of the radio signal receiving unit in the first path for receiving and processing codes,  the fifth output of the frequency synthesizer is connected to the third inputs of the blocks for receiving radio signals in the second and third paths for receiving and processing codes,  introduced the first projection optical system,  in the front focal plane of which the first matte screen is located,  optically connected through a projection optical system and reflectors of the first and second piezoelectric deflectors to the radiating side of the first radiation modulation unit,  a second radiation modulation unit,  comprising an optical system and an emitter of three primary colors,  located in the rear focal plane of the optical system,  connected in series to a third amplifier,  the input of which is connected to the output of the horizontal scanning unit,  and a third piezoelectric deflector with a reflector at the end,  fifth source of positive reference voltage  the output of which is connected to the second inputs of the third amplifier and the third piezoelectric deflector,  sixth source of negative reference voltage,  the output of which is connected to the third inputs of the third amplifier and the third piezoelectric deflector,  the fourth amplifier connected in series,  the input of which is connected to the output of the frame scan unit,  and the fourth piezoelectric deflector with a reflector at the end,  seventh source of positive reference voltage,  the output of which is connected to the second inputs of the fourth amplifier and the fourth piezoelectric deflector,  the eighth source of negative reference voltage,  the output of which is connected to the third inputs of the fourth amplifier and the fourth piezoelectric deflector,  introduced a second projection optical system and a second matte screen,  optically connected through a second projection optical system,  reflectors of the fourth and third piezoelectric deflectors with the radiating side of the second radiation modulation unit,  the inputs of which are connected to the outputs of the fourth to sixth blocks of pulse amplifiers,  and the inputs of the first to sixth blocks of pulse amplifiers are connected to the outputs of the corresponding first to sixth blocks of code processing,  the first and second projection optical systems are identical,  each includes a sequentially spherical mirror,  in the focal plane of which the reflector of the second (fourth) piezoelectric deflector is located,  a flat mirror with an inclination of 45 ° relative to the optical axis of the spherical mirror and a correction lens,  in the external focal plane of the projection optical system is a matte screen,  the first and second key blocks are entered into each code processing unit,  the inputs of which are bitwise combined and are the information input of the block,  the outputs of the first block of keys are connected to the inputs,  the first block of delay elements,  the outputs of the second block of keys are connected to the inputs of the second block of delay elements,  the control input of the first block of keys is connected to the first output of the trigger,  the control input of the second block of keys is connected to the second output of the trigger,  a frequency divider is introduced into the channel for generating control signals (2: 1),  the input of which is connected to the output of the frame sync pulse allocation unit,  and the output is connected to the second input of the frame scan unit,  the second control inputs of the blocks of sound registers are connected to the third output of the frequency synthesizer,  on the receiving side a viewer helmet is inserted,  in which the first radiation modulation unit is suitably arranged,  first amplifier and first piezoelectric deflector,  first,  second reference voltage sources,  a second amplifier and a second piezoelectric deflector,  third,  fourth reference voltage sources,  first projection optical system and first matte screen,  a second radiation modulation unit,  a third amplifier and a third piezoelectric deflector,  fifth,  sixth voltage reference sources,  a fourth amplifier and a fourth piezoelectric deflector,  seventh,  eighth reference voltage sources,  a second optical projection optical system and a second frosted screen.

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