SU1432801A1 - Television color synthesizer - Google Patents

Abstract

The invention can be used in television automatic color music installations. The purpose of the invention is to enhance the functionality by making it possible to achieve a color musical effect. Introduction of logical amplifier 6, blocks 7, 15 and 18 in the selector of the amplitude envelope of the audio signal, analog key-inverters 8, 16 and 19, selector 9 horizontal sync pulses, detector 10, integrator 11, block 12 matrix, inverter 13, controlled filter 14 high frequency, controlled low-frequency filter 17 and the formation of new functional connections allows the image to be received on the color kinescope screen, the background color and brightness of which are automatically adjusted in accordance with the change of musical instrument parameters of the writings. The device also contains a reference voltage generator 1, a divider 2 color module, a block of 3 chrominance coordinate dividers, a color kinescope 4, a sound reproducing device 5. 5 Il. (Ls

Description

The invention relates to the light-music technique and can be used in television automatic color-music installations to obtain on the screen of a color kinescope images whose color tone and brightness are automatically adjusted according to the parameters of music pieces Q reproduced by any home audio player - tape recorder, player , low-frequency path of the receiver or TV, etc.

The aim of the invention is to enhance the functionality by enabling the achievement of a color musical effect.

Ia figure 1 shows the structural 20 scheme of a television color synthesizer; FIG. 2 shows the circuit diagram of the specific implementation of the block of chromaticity coordinate divisors; FIG. 3 shows examples of a specific 25 implementation of a divider of a Tsnet module, an analog key-inverter and a block. matrixing, respectively, j in FIG. 4, are timing diagrams of the operation of the device in FIG. 5, the range of it is enumerated, the settings of the controlled low frequency filter and the controlled high frequency filter.

A television color synthesizer contains a series-connected generator of the reference voltage and a divider 2 color module block. 3 coordinate divider color, outputs. which are connected to the inputs of the color kinescope 4, the audio-reproducing device 5 connected in series, is a logarithmic amplifier 6, the first block 7 of the amplitude envelope selection 7 of the sound signal, nepBf m analogue key-inverter 8, successively connected selector 9 lower-order synchro-shul, detector to, integrator 11, matrixing unit 12, inverter 13, control high-frequency filter 14, second amplitude envelope selection unit 15 of the audio signal, second analog key-inverter 16 and serially connected controls A low-frequency filter 17, a third block 18 for selecting the amplitude envelope of the audio signal 55, a third analog switch-inverter 19, the first and second outputs of which are connected to the second and third

35

40

: 45

,

Q 5

20 25,

to 55 35

40

: 45

50

The inputs of a block of 3 chromaticity dividers, the fourth and fifth inlets of which are connected respectively to the first and second outputs of the second analog key-inverter 16, and the first input to the input of the selector 9 horizontal sync pulses, the first and second outputs of the first analog key-inverter 8 are connected respectively to the second and third inputs of the divider 2 color module, and the output of the logarithmic amplifier 6 is connected to the second input of the controlled high-frequency filter 14 and the first input of the controlled low-frequency filter 17 , the second input of which is connected to the second input of the matrix unit 12. The block 3 of the chromaticity coordinate divider contains, for example, (FIG. 2) the first to ten 20-29 optocouplers, respectively, the bus 30 + of the power supply.

The divider 2 color module contains, for example, (fig.Za) eleven 31 and twelfth 32 optocouplers, respectively.

The first, second and third analog switch-invertors 8, 16 and 19, respectively, contain, for example, (Fig. 36) resistors 33-36, as well as the first 37 and second 38 transistors.

   Matrixing unit 12 contains (fig.Sv) first-quarter .39-42 re-. zistors respectively.

Television color synthesizer works as follows.

The reference voltage generator 1 generates a reference signal Uon which triggers the lowercase (FID) and personnel (XNI) sync clocks. This signal is fed to the divider 2 color module, the division ratio of which determines the current value of the synthesized image module U (t) and varies according to the change of control signals from the first and second outputs of the first analog switch-inverter 8, the current value of the module the synthesized image Uy (t) is determined in accordance with the expression U / t) K, (t) -U ,,

where K, (t) is the division coefficient, defined by the formula

Ki (t)

R 3l (t)

R ,, (t) + Rii (t)

where Rji and K3 are the active resistances of the photoresistors of the eleventh 31 and twelfth 32 optocouplers, respectively, changeable according to the change in the control signals (U -j and u) arriving at the first and second inputs of the controlled splitter 2 color module U + UE, where Ep, is the voltage of the power supply).

The change of control signals supplied to the first and second inputs of the controlled divider 2 color module from the first and second outputs of the first analog switch-inverter 8, is influenced by the control of its signal at the input of the first analog switch-inverter 8. Moreover, the control level increases the input signal of the first analog switch of the inverter 8 leads to an increase in the current flowing through the LED - the eleventh optocoupler 31 (on the circuit:

cue signal level at the input of the second

power supply - LED ™ of the eleventh optocoupler 31 - a 25 analog switch – inverter 16, a transistor 35 - a collector - an ejugter leads to an increase) and to a decreasing transistor 37 - a total of K5, (t) . power supply point), and to proportion-; the cial reduction of the current flowing through the twelfth LED

optocoupler 32 (on the circuit: bus 30 + power supply - LED of the twelfth optocoupler 32 - resistor 36 - collector-emitter of the second transistor 38 - common power supply bus). An increase in the current flowing through the LED of the eleventh optocoupler 31 leads to an increase in the luminous flux emitted by it, and a decrease in the current flowing through the LED of the twelfth optocoupler 32 to a decrease in the luminous flux emitted by it. At the same time, the resistance R ,, of the eleventh optocoupler 31 decreases , and the active resistance R j. of the twelfth optocoupler 32 increases proportionally. Consequently, the division ratio of the divider is 2

(K) increases that

31 31

: leads to an increase in the module of the synthesized color and t-K, - Ugp ,. When the level of the control signal at the input of the first analog key-inverter 8 K decreases, it decreases, which leads to a decrease in the module of the synthesized color and (FIG. 4d).

The voltage UT (t) from the output of the split 2 module of color is fed to the inputs

35

The voltage U, (t) U, (t) taken from the output of the divider, along with the NIL on the photoresistors of the first 20 and second 21 optocouplers, enters the divider section, consisting of sequentially connected photoresistors of the fifth 24 and sixth 25 optocouplers, and the voltage from the output of the divider is connected in series with the photoresistors of the third 22 and the fourth 23 optocouplers, respectively, given to the input of the voltage divider containing the sequentially connected photoresistors of the seventh 26 and eighth 27 optocouplers. At the same time, the level of the signal at the input of the third en from the inverter key 19 of the inverter leads to a reduction; the division ratio of the voltage divider consisting of two series-connected photoresistors of the fifth 24 and sixth 25

R25 (t) thrones K ,, t)

40

50

15

(t)

coeff

a voltage divided by a voltage divider 11 at the photoresistors of the seventh and eighth optocouplers 26 and 27, respectively

55

K (t)

27 (t

R,; (t)

+ Ro-jCt)

and to proportion

to increase the coefficient of division of the voltage divider into photocurrent three voltage dividers of the block of 3 chromaticity coordinate dividers, each of which consists of two successively connected photoresistors (the first 20 and second 21 optocouplers, the third 22 and fourth 23 optocouplers, the ninth 28 and tenth Optocouplers), At the same time, an increase in the signal level at the input of the second analog switch-inverter 16 leads to a 1% value of the dividing ratio of the divider consisting of photoresistors of the first 20 and second 21 optocouplers - K (t)

(t); R-7t). “At L1tekiyu division factor divided by the divided photoresistors of the third 22 and fourth 23 optocouplers - K3 (t) R., (T)

- Р Г) - 1 .. R ((Fig. E), Decrease - - h - / - /

cue signal level at the input of the second

analog key-inverter 16 leads to an increase) and to a decrease in K5, (t). ;

analog key-inverter 16 leads to an increase) and to a decrease in K5, (t). ;

The voltage U, (t) U, (t)) taken from the output of the divider voltage on the photoresistors of the first 20 and second 21 optocouplers is fed to the input of the divided 24 and sixth photoresistors the optocouplers, and the voltage from the output of the divider on the third 22 and fourth 23 series-connected photoresistors, respectively, are fed to the input of a voltage divider containing the series-connected photoresistors of the seventh 26 and eighth 27 optocouplers. At the same time, an increase in the signal level at the input of the third analog switch of the inverter 19 leads to a reduction in the division ratio of a voltage divider consisting of two series-connected photo-meters; 24 and sixth 25 opistors

R25 (t) thrones K ,, t)

15

(t)

the delimiting factor 11 voltage divider at the photoresistors of the seventh and eighth optocouplers 26 and 27, respectively

55

K (t)

27 (t

R,; (t)

+ Ro-jCt)

and to a proportional increase in the division ratio of the voltage divider at the photoresistors of the ninth and tenth optrons 28 and 29, respectively K (t)

R ,, (t)

R,. (T) 4- R. (t)

Level reduction

the signal at the input of the third analog key-inverter 19 leads to an increase in K (t) and to a proportional decrease in K5 (t) and K4 (t).

From the output of the voltage divider at photoresistors of the ninth 28 and tenth 29 optocouplers, respectively, the color- separate voltage U (t)) x XK (t) is applied to the control electrode of the red gun of the color kinescope 4, from the output of the voltage divider at the seventh photoresistors and the eighth optocouplers 26 and 27, respectively, the color separating voltage Ug (t) t) K (t) Ks (t) is fed to the control electrode of the blue gun, and from the output of the voltage divider on photoresistors of the fifth and sixth optocouplers 24 and 25, respectively, the color separating

voltage) K, (t) Kj (t) K4 (t) is applied to the control electrode of the green gun of the color kinescope 4. This

) + Ue (t) + UG (t) UonK, (t) XX Kj (t) 4- UonK, (t) K5 (t) Kj (t) + Uen XX Ki (t) K (t) K (t ) UenK, (t) CKj (t) + + K5 (t) Ky (t) + Kj (t) K4 (t),: a since K (t) + K (t) K (t). K (t) x PC K (t) 1 at any time t, kTO is achieved by selecting the initial working | point of the transistors of the first, second | third, third analog switches | inverters 8, 16 and 19 (the sum of the divided voltages are always equal to the color modulus UR + Up -f and Q Ur).

An electrical sound signal from the output of the audio reproducing device 5, which can be used as a tape recorder, player, low-frequency path of a receiver or a TV, etc., is fed to the input of a logarithmic amplifier 6, which is used to compress the dynamic range of the sound. sound vibrations in order to simulate the law of Weber-Fechner. From the output of the logarithmic 6, the electric sound signal is squeezed over the dynamic range and is fed to the input of the first block 7 of the bend selection by the amplitude of the sound signal (the envelope block 7 can be performed, for example, according to the circuit diagram), as well as

0

0

five

thirty

35

40

45

50

The first inputs of the controlled high-frequency filter 14 and the low-frequency controlled filter 17, which are used to analyze the frequency components of the electrical sound signal, the electrical sound signals whose frequency spectrum, at a given time is in the passband of the high-pass filter 14, are given to the input of the second envelope selection block 15, and electrical sound signals, the frequency spectrum of which lies in the bandwidth of the low-pass filter 17, are fed to the input of the third selection block 18 envelope.

The output of the first block 7 of the envelope selection is an electrical signal characterizing the change in sound intensity in the whole frequency spectrum, and the output of the second and third blocks 15 and 18 of the envelope gap, respectively, in the passband of the high-pass filter 14 and low-pass filter 15. The signals from the first, second and third blocks 7, 15 and 18 of the slot, respectively, bending around, are fed to the inputs of the first, second and third analog key-inverters 8, 16, 19, respectively, controlling the division factors K, K, K, K,

S f.

Let the signal reproduced by the audio reproducing device 5 in the time interval such that the time variation of the amplitude envelope made at the output of the first envelope 7 time section 7 occurs in accordance with the timing diagram shown in Fig. 4a. that the amplitude envelope of the high-frequency component of the audio signal that is amplified at the output of the second block 15 is changed in accordance with the timing diagram of FIG. 4b, and that the output of the third block is 18 ELENI envelope amplitude of the low-frequency component of the audio signal - in accordance with Figure 4B. Then the K factor of the divider 2 color modulus and the coefficients K, K 3, K, Kj, K of block 3 of the chromaticity coordinate divider change in accordance with the timing diagrams shown in Fig.4d, d, e, x, 3, and respectively. Change

The indicated coefficients lead to a change in the levels of the output color-individual signals Up, Ug, U in accordance with the time diagrams presented in figure 4, l, m.

The signal and on mixed with horizontal and vertical sync pulses from the output of the divider 2 color module also goes to the selector 9 of horizontal sync pulses, which selects the horizontal sync pulses detected by the detector 10 and integrated by the integrator 11. At the output of the integrator 11, a voltage proportional to 1 is generated ) -, which is fed to the input of the matrix unit 12.

Matrixing unit 12 is designed to generate signals controlling the frequency characteristics of the high-frequency filter 14 and low-frequency filter 17. The control signals are formed by block 12 in a certain proportion of the signal from the output of integrator 11 (for example, if the voltage output from the output of integrator 11 is U, then the voltage generated on the first output of the matrix 12 must have U value is 0.30 u, and on second, U 0.11 U) (from the white balance equation). The choice of resistors included in the matrix circuitry ensures the desired ratio between the input and output signals. For example, let the resistances of the first, second, third, and fourth resistors 39-41, respectively, have values R, Rij, R, R4, then if a voltage is applied to the input of the matrix 12, a voltage is applied to its first output

n yiR 2 R3 + R2 R4).

1 3 + RiRr + R

Ra + 45

a on the second

.

 Lt r. .TPT

 +

R, R3 +

Rfr4 +

, 2.3

From the expressions obtained, the values of the resistors are found, which allow to obtain the necessary ratio between and, and and 2.

The signal from the second output of the matrixing unit 12 is fed to the input of the inverter 13, which converts it to the signal - and (where Ugn) From the output of the inverter 13, the signal and g is fed to

Uj u; n

Iq 15

20 25 30 Q

35

45

go

55

The (control) 1 input of the controlled high-frequency filter 14, and the signal and, formed at the second output of the matrix unit 12, are fed to the second control input of the filter 17 at a low frequency. The low-frequency control chip 17 and the high-frequency control filter 14 can be selected according to the RC filter circuit, the element R (active resistance) in which is an optocoupler photoresistor, whose resistance depends on the intensity of the light flux emitted by the LED connected to the input management So, for example, the low frequency l-shaped filter 17 has an upper cutoff frequency f, equal to 160 / RC, and filter 14; a high frequency to the lower cutoff frequency f 160 / RC. When the magnitude of the active resistance R changes, the transparency bandwidth of the filters changes .

The limits of variation of the boundary frequencies f, and f of fcpter 17 and 14 are chosen on the basis that the usability of sounds in musical works is not the same and the most frequently used sound frequencies lie in the range of 55-1.5 kHz.

The cut-off frequencies f, and f of the filters 17 and 14 are altered by the signals applied to their control inputs, which are proportional to the intensity of the sounds. Changes in the cut-off frequencies f and f-j are shown in Fig. 5 for a sound signal of minimal intensity (or in its absence), the gran1-gh frequencies are shown by a solid line, and for a sound signal of maximum intensity - dashed. The change in the frequency range jF f ,, -., For the considered time interval is shown in fig.4n.

Thus, the brightness of the image synthesized on the screen of the color kinescope depends on the level of the sound signal, and the color tone depends on the intensity of its frequency components. In addition, since the cutoff frequencies of the controlled high-frequency filter 14 and the controlled low-frequency filter 17 also depend on the sound signal level, when it changes, the frequency components are automatically redistributed, depending on the intensities of which the color tone depends.

image captured on the screen.

color kine ™

Claims (1)

Invention Formula A television color synthesizer containing a series-connected reference voltage generator, a divider color module, a block of coordinate chromaticity dividers, the outputs of which are connected to the inputs of a color kinescope, characterized in that, in order to extend the functionality by making it possible to achieve a color music effect, sequentially connected sound-reproducing device, logarithmic amplifier, the first block of the amplitude envelope of the audio signal, the first first analog switch-inverter connected in series selector, the horizontal sync pulses detectors | p integrator matrixing unit, an inverter controlled by a high frequency filter, a second enveloping unit vscheleni the amplitude of the sound signal, the second analog key-inverter and the series-connected controlled low-frequency filter, the third block of the amplitude of the sound signal, the third analog key-inverter, the first and second outputs of which are connected to the second and third inputs of the block of chromaticity divisors, the fourth and the fifth inputs of which are connected respectively with the first and second outputs of the second analog key-inverter, the first input with the input-Selector lowercase sync pulses, the first and second th outputs of the first analog-inverter switch are connected respectively to the second and third inputs of the divider unit color, and an output of the logarithmic amplifier is connected to the second input of the controlled high frequency and the first input control low frequency emogo filter emogo filter, a second input coupled to a second output of the matrixing unit. From 2 From 16 from IS Qfjjig Fie.2 0ml From 8 From 8 From 11 to 17 8j1S.19 -L From 1.15,18 Fig.Z Hi