RU2534967C1 - Frame image digitisation apparatus - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: apparatus comprises a lens, an image detector which includes an array of elements based on the frame resolution number 106, situated in the focal plane of the lens and having three groups of outputs of colour codes R, G, B, includes three register units and a control signal generator which outputs from the first output pulses with frame frequency (25 Hz), connected to the control inputs in array elements, and from the second output pulses with code sampling frequency, connected in parallel to the second control inputs of the first through third register units.

EFFECT: high frame resolution by making array element converters of brightness of radiation of colours R, G, B - three codes, which synchronously output codes of three colours R, G, B.

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Description

The invention relates to a technology for digitizing a frame image can be used to obtain digital images in digital video cameras and cameras.

The prototype is a frame image digitizing device [1] containing a matrix image receiver with a resolution of 10 ⁶ located in the focal plane of the lens, three groups of outputs of which are connected to the inputs of three blocks of keys, the outputs of which are connected to the inputs of three blocks of registers, and a control signal generator issuing from the first output pulses of a frame frequency of 25 Hz, from the second output pulses of a sampling frequency of 25 MHz codes, from the third output pulses of a frame frequency with a frame duration period to control key moves in register blocks whose outputs are device outputs. The disadvantage of the prototype is the implementation of the matrix element of the three converters “radiation brightness - code", each of which converts the radiation of the same color from three R, G, B into a code, with three converters the matrix element has large transverse dimensions, which reduces the resolution of the matrix image frame receiver .

The purpose of the invention is to obtain synchronously the three color codes R, G, B in one converter and increase the resolution of the frame. The technical result is to reduce the size of the matrix element and increase its resolution by performing the matrix element from one transducer “the radiation intensity of the colors R, G, B - three codes”.

The essence of the claimed device containing a lens and a matrix, three blocks of registers and a generator of control signals, is performed by each element of the matrix with a converter “the brightness of the colors R, G, B is three codes” and three blocks of eight-bit registers are entered into the device instead of three key blocks, each of which contains eight-bit registers according to the number of elements in the matrix.

The device 1 for digitizing the image frame shown in figure 1; the Converter “brightness of the radiation of colors R, G, B - three codes" - figure 2-4; block of registers - figure 5; the receiving element reflected from the micromirror radiation - Fig.6.

The device for digitizing the image of the frame (Fig. 1) includes a lens 2, in the focal plane of which there is a receiving side from the image receiver 3, containing a matrix of 10 ⁶ elements. Three groups of outputs of color signals R, G, B each from the first of 8 × 10 ⁶ from the elements of the matrix are connected to 8 × 10 ⁶ inputs of blocks 4, 5, 6 of eight-bit registers, the outputs of which from the first to 4 × 10 ^{6 are} connected to inputs 4 × 10 ⁶ second blocks of registers 7, 8, 9. Device 1 includes a generator 10 of control signals that generates pulses U from the first output _{at a} frame rate of 25 Hz, connected to the control inputs of the converters in the matrix elements, and pulses of 25 MHz code sampling from the second output U _d connected to the second control inputs of blocks 4, 5, 6, 7, 8, 9 register ditch, from the third output pulses of 25 Hz with a frame duration of 40 ms, connected to the first control inputs U _from blocks 7, 8, 9 registers, from the fourth output pulses with a frequency of 200 MHz to the third control inputs of blocks 4, 5, 6. Each element matrix is a converter “the brightness of the radiation colors R, G, B - three codes” and includes / Fig.2/ opaque housing 11, in the input window of which is placed one opaque microfilter 12, acting as an entrance door, attached to the first / free / end of the micropiezoelectric element 13, in the absence of control The impulse from the block 10 / output 1 / the input window of the housing 11 is closed by an opaque microfilter 12, the second end of the micropiezoelectric element 13 is rigidly fixed in the housing 11 and connected to the first output of the generator 10 through a diode. The control pulse has a duration of 0.1 ms with a frequency of 25 Hz with amplitude sufficient for the micro-piezoelectric element 13 to bend [2, p.26], and opens the passage of radiation from the subject to the microlens 15. Behind the microlens 15, which serves as the lens, along its optical axis and at an angle of 45 ° to it sequentially at an equal distance Eight translucent micromirrors 16 _1-8 are located and rigidly fixed by the number of bits in the code, each micromirror 16 located in front passes into the next next radiation stream, attenuated by a factor of two, for which each micromirror has a beam splitting covering the reflection ratio radiation to the missed as 1: 0.5 [3, p.223]. In the wall of the converter housing 11, to which the micromirrors 16 are rotated, eight identical photodetectors 17 _{8-1 (} Fig. 6/) are made in the places where the reflected radiation arrives, each has a disk shape and contains three photodetector sectors of equal size to receive the color radiation reflected from the micromirror R, G, B: the first sector of the photodetector 17 for receiving the red part of the radiation has a red filter in its sector, the second sector receives green radiation and has a green filter G, the third sector receives blue radiation a B and has a blue filter. Each photodetector sector has its own output connected to the input of its pulse amplifier 18 (Fig. 2/), which is printed on the outside of the converter housing. The output of each pulse amplifier 18 is connected to the input of its discharge in an eight-bit register 20/2 /. With the end of the passage of radiation through the micromirrors 16 _1-8 from the outputs of the pulse amplifiers 18, their pulses will fill their discharges in the register 20. At the time of 25 MHz pulse entering the control input U _from /fig.2/ key 21 in the blocks 4, 5, 6 eight-bit registers keys 21 are opened and a pulse U _vyd 200 MHz / 25 MHz × 8/21 from the output of the key issues of the corresponding bit of the register 20, the senior code signal, the signal of the highest bit of the code from the register 20 goes to the corresponding input in the encoder 22, it also closes the key 21. As a result, the encoder 22 always receives only one pulse, and the number of the bit from which it was issued, encoder 22 encodes a four-digit code and issues t it in the next block 7/8, 9 / registers. The key 19 is opened by the pulse U _from the output of the pulse amplifier 18 ₈ at the very beginning of the radiation passage through the micromirrors 16. With the arrival of the leading edge of the next pulse of the 25 Hz frame, the key 19 is closed, and all bits of the register 20 are reset to zero. From the outputs of blocks 4, 5, 6, the inputs of blocks 7, 8, 9 of the registers will always receive four-digit codes representing the number of the bit in which there was a pulse of the highest bit in the eight-bit code in register 20 / Fig. 2/. Combinations of four-digit codes after re-encoding are given in the table.

Codes in the registers 20 blocks 4, 5, 6 Codes from the outputs of the encoder 22 00000001 0001/1 / 00000010 0010/2 / 00000100 0011/3 / 00001000 0100/4 / 00010000 0101/5 / 00100000 0110/6 / 01000000 0111/7 / 10,000,000 1000/8 /

Four-digit codes from blocks 4, 5, 6 of eight-bit registers come in parallel to blocks of 7, 8, 9 registers, executed identically / Fig. 5/, each includes four-bit registers 25 by the number of frame resolutions from the first to 10 ⁶ and a series-connected key 23 and a 24 pulse distributor. The information inputs in blocks 7, 8, 9 of the registers are the first to fourth parallel inputs of all the registers 25 inputs 4 × 10 ⁶ , the outputs are the bit-wise combined first to fourth outputs of all the registers 25. The first control input is the input U _from key 23, connected to the third the output of block 10, the second control input U _d is the signal input of the key 23 connected to the second output of the block 10. The key 23 opens with a leading edge of the pulse of 25 Hz for a duration of 40 ms, closes with a trailing edge of the pulse. When the public key 23 to the input of the pulse distributor 24 receives pulses U _d 25 MHz, the signals output from the block 23 are signals U _vyd codes sequentially from the first registers 25 to 10 ⁶ per video frame playback or record it on an appropriate carrier.

Frame Digitizer Operation

The lens 2 projects the image of the frame on the inputs of the elements of the matrix of the receiver 3 of the image. The converters “color brightness R, G, B - three codes” provide eight-bit codes in parallel with the signals in all bits from the lowest to the signal in the highest bit of the code in the same bits of the registers 20 in blocks 4, 5, 6 of the registers in which re-coding is performed, and from the outputs of blocks 4, 5, 6, four-digit codes in parallel form enter blocks 7, 8, 9 of the registers. Digitization of a frame is performed in one frame period of 40 ms. Re-coding allows to reduce the number of connections from blocks 4, 5, 6 to blocks 7, 8, 9 by half, and in the blocks of registers 7, 8, 9 use not 8-bit registers, but 4-bit ones.

The use of converters in the matrix elements allows to increase the resolution of the matrix three times. To play video information, 4-bit codes are easily converted in the reverse order to 8-bit codes [4, p.202].

Used sources

1. RF patent No. 2452026 C1, cl. G06T 9/00 bul. 15 dated 05/27/12

2. A.F. Plonsky, V.I. Thearo. "Piezoelectronics". M., "Knowledge", 1979, p.26, 21st line from above.

3. B.N. Begunov, N.P. Zakaznov. Theory of optical systems. M., 1973, p.223.

4. V.N. Tutevich. Telemechanics. 2nd ed. M., 1985, p.202, 207.

5. V.V. Frolov. "Radio circuit language." 2nd ed. M., "Radio and Communications", 1989, p.5.

Claims (1)

A frame image digitizing device comprising a lens and an image receiver including a matrix of elements by the number of frame resolution 10 ⁶ located in the focal plane of the lens and having three groups of outputs of color codes R, G, B, includes three register blocks and a control signal generator issuing with the first output pulses of the frame frequency / 25 Hz / connected to the control inputs in the matrix elements, from the second output - the sampling frequency pulses of the codes connected in parallel to the second control inputs of the first - tr of these register blocks, from the third output are frame frequency pulses with a frame duration period, connected in parallel to the first control inputs of the first, second and third register blocks, each matrix element is a converter of radiation brightness into identical codes, each includes an opaque case, in front of which a micro lens is fixed in an opaque partition, along the optical axis of which and at an angle of 45 ° to it, they are sequentially located one after another and are rigidly fixed by the number of discharges in the code, semitransparent micromirrors, each translucent micromirror located in front passes a radiation stream that is halved twice after it, the translucent micromirrors have a beam splitting coating, which performs the ratio of reflected radiation to transmitted radiation as 1: 0.5, on the side of the transducer body to which they are turned micromirrors, and by their number are photodetectors receiving radiation reflected by micromirrors, and whose outputs are information outputs of the radiation brightness converter Nia into codes registers block outputs are first, second and third output devices digitizing frame image register blocks are identical, each including registers by the number of resolution array 10 ⁶ serially connected switch and a pulse valve, which outputs first to June ¹⁰ are connected in series to the control inputs U _vyd - in each register, the information inputs of each block of registers are the inputs of all registers, the control inputs of which are: first - the first control input U _from a key connected to the third output of the control signal generator; the second is the signal input of the key connected to the second output of the control signal generator, the outputs of all the registers in each block of registers are bitwise combined and are the outputs of the device for digitizing the image of the frame, characterized in that each matrix element is made by the transducer “color radiation brightness R, G, B - three codes ”and the first, second and third blocks of eight-bit registers are entered into the device, the converters“ brightness of the colors R, G, B - three codes ”are identical, each has an opaque housing frame of a rectangular parallelepiped, in the input window of which there is an opaque microfilter, acting as an entrance door, attached to the first / free / end of the micro-piezoelectric element, the second end of which is rigidly fixed in the housing and is connected via the diode to the first output / 25 Hz / of the control signal generator via an optical the axis of the micro-lens and at an angle of 45 ° to it, according to the number of discharges in the code, there are eight translucent micromirrors, on the side of the body to which the micromirrors are turned, in the places where the reflected light eight identical photodetectors are located, each of which has a disk shape and consists of three photodetector sectors of equal size, synchronously receiving R, G, B colors reflected from micromirrors: the first photodetector sector has a red R filter on the irradiation side and perceives a red reflection from total reflected radiation; the second photodetector sector on the irradiation side has a green G filter and perceives a reflection of the green G part of the radiation; the third photodetector sector has a blue light filter B on the irradiation side and receives blue radiation from the total reflected stream, the output of each photodetector sector is connected to the input of its pulse amplifier, which are made on the outside of the converter housing, the output of each pulse amplifier is connected to the input of its discharge in an eight-bit register the entered block of eight-bit registers, the outputs of the pulse amplifiers receiving color signals R are connected to the inputs of the bits of the eight-bit register in the first block of eight-bit registers, the outputs of the pulse amplifiers receiving signals of color G are connected to the inputs of the bits of the eight-bit register in the second block of eight-bit registers, the outputs of the pulse amplifiers receiving the signals of color B are connected to the inputs of the eight-bit registers in the third block of eight-bit registers, the first to the third blocks eight-bit registers are identical, each includes the number of elements in the matrix functional groups, each of which includes an eight-bit register, cipher a torus, the inputs of which are connected to the outputs of the bits of the eight-bit register, the first and second keys, the information inputs of the functional group are the inputs of the first and eighth bits of the register connected to the outputs of the corresponding pulse amplifiers of the converter being serviced “the radiation brightness of colors R, G, B is three codes”, the first control input of each functional group is the signal input / 25 Hz / of the first key connected to the first output of the control signal generator, the first control input U _{from the} first to Lyucha connected to the input of the eighth register of the discharge, the output signal of the first switch resets parallel all bits of eight bit register, the second control input U _of the first switch is connected to the output of its key, the second control input of the functional group is a first control U input _from / 25 MHz / second key which in the open state transmits pulses of 200 MHz and connected to the fourth output of the generator control signals being signals U _vyd issuing pulses at eight bit register bits sequence awns from the senior / first / discharge to younger / eighth / discharge to respective inputs of the encoder, the outputs of the first - eight bits of the register through the diodes are combined and connected to the second control U _of entry of the second key, providing the issuance of input encoder only older code discharge signals, the first - the fourth outputs of all encoders in each block of eight-bit registers are 4 × 10 ⁶ outputs, which are connected respectively to 4 × 10 ⁶ inputs of its block of registers, each of which contains 10 ⁶ four-bit registers, the first and fourth digits in each block of registers are bitwise combined and are the first and fourth outputs of each block of registers; the first and fourth outputs of the first, second, and third blocks of registers are the first, second, and third outputs of the device for digitizing the image of a frame.

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