CN108333857B - Projection light source drive control circuit - Google Patents

Projection light source drive control circuit Download PDF

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Publication number
CN108333857B
CN108333857B CN201810023262.8A CN201810023262A CN108333857B CN 108333857 B CN108333857 B CN 108333857B CN 201810023262 A CN201810023262 A CN 201810023262A CN 108333857 B CN108333857 B CN 108333857B
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output
light
module
light source
input end
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CN108333857A (en
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崔荣荣
李健锋
郭大勃
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Hisense Co Ltd
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Hisense Co Ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light

Abstract

The invention discloses a projection light source drive control circuit. The projection light source driving control circuit provided by the embodiment of the invention comprises a light source gating control module, a first driving logic module, a second driving logic module, a third driving logic module and a primary light output unit, wherein a primary light output control signal can be output according to a primary color output control signal of a projection light source system to generate a color light lightening time sequence signal, and a primary light brightness adjusting signal is output to the primary light output unit according to the color light lightening time sequence signal, so that at least one primary light output unit outputs corresponding color light, the output control of different primary light brightness adjusting signals of a plurality of projection light sources is realized, and the brightness of the projection light sources can be adjusted.

Description

Projection light source drive control circuit
The present application is a divisional application of chinese patent application 201610745274.2 entitled "a projection light source driving control circuit" filed on 29/08/2016.
Technical Field
The invention relates to the field of photoelectricity, in particular to a projection light source drive control circuit.
Background
With the development of science and technology, more and more scenes are needed to use the laser projection product, and people pay more and more attention to the way that the drive control circuit carries out drive control on the laser light source in the laser projection product in order to obtain better projection effect.
Because laser light source colour purity is high, the directionality is strong, and has hi-lite, many advantages such as high colour gamut, be applied to in the projection product by the trade company gradually, when using double-colored laser light source in the laser projection product, this double-colored laser light source is red laser light source and blue laser light source, this red laser light source can export ruddiness under double-colored light source drive circuit's control, blue laser light source can cooperate the colour wheel module to export green glow, blue light under this double-colored light source drive circuit control, need realize drive control to red laser instrument and blue laser instrument respectively according to the chronogenesis of primary color light. When a laser projection product uses a three-color laser light source, i.e., a red laser, a blue laser, and a green laser, it is necessary to perform sequential driving control for the three lasers. And sometimes, the fluorescent variety needs to be added on the basis of the traditional three primary colors to form the multi-primary color, and at the moment, control devices need to be respectively added in the original two-color laser light source and the control circuit of the three-color laser light source to realize the time sequence output of the multi-primary color and form the white light of the projection light source.
However, in the driving process for the two-color or three-color laser, the driving circuits need to be controlled separately, which is poor in versatility, and wastes resources and increases development cost.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a projection light source driving control circuit, which can be used to drive a two-color laser light source or a three-color laser light source, and implement output control of brightness adjustment signals of different primary colors.
In order to realize the purpose of the invention, the technical scheme is as follows:
on one hand, the projection light source driving control circuit is provided, and comprises a light source gating control module, a first driving logic module, a second driving logic module, a third driving logic module and a primary light output unit;
the primary light output unit comprises a blue laser output unit, a green laser output unit and a red laser output unit and is used for outputting at least one color light;
the input end of the light source gating control module and the input end of the first driving logic module are respectively connected with the output end of the projection light source system, and the output end of the light source gating control module is respectively connected with the blue laser output unit, the green laser output unit and the red laser output unit so as to gate at least one primary color light output unit from the primary color light output units through the light source gating control module and the first driving logic module based on a primary color output control signal output by the projection light source system;
the output end of the first driving logic module is respectively connected with the input end of the light source gating control module, the input end of the second driving logic module and the input end of the third driving logic module, the input end of the second driving logic module is connected with the output end of the projection light source system,
the output end of the second driving logic module is respectively connected with the input end of the third driving logic module and the green laser output unit;
the input end of the third driving logic module is connected with the output end of the light source gating control module, the output end of the third driving logic module is connected with the blue laser output unit,
the first driving logic module, the second driving logic module and the third driving logic module generate corresponding color light lightening time sequence signals based on the primary color output control signals, and output primary color light brightness adjusting signals output by the projection light source system to the primary color light output units according to the color light lightening time sequence signals, so that at least one primary color light output unit outputs corresponding color light.
The technical scheme provided by at least one embodiment of the invention has the following beneficial effects: the projection light source driving control circuit can be used for gating at least one primary light output unit from the primary light output units through the light source gating control module and the first driving logic module based on a primary light output control signal output by the projection light source system. Meanwhile, the projection light source driving control circuit can output control signals based on the primary colors, generate corresponding color light lightening time sequence signals through the first driving logic module, the second driving logic module and the third driving logic module, outputting the brightness adjusting signal of the primary color light output by the projection light source system to the primary color light output units according to the brightness timing signal of the color light to make at least one primary color light output unit output corresponding color light, therefore, the driving control of at least one laser light source, such as a bicolor laser light source or a tricolor laser light source, is realized, that is, the driving control circuit of the projection light source provided by the embodiment of the invention can select the type of the bicolor laser light source or the tricolor laser light source to be connected, therefore, the output control of the brightness adjusting signals of different primary colors of light can be realized for various laser light sources, and the brightness control of the projection light source is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first projection light source driving control circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second projection light source driving control circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a two-color laser light source and a timing sequence of color light output according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sixth projection light source driving control circuit according to an embodiment of the present invention;
FIG. 5 is a timing diagram of a three-color laser source and color light output according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a projection light source driving control circuit according to an embodiment of the present invention, and referring to fig. 1, the projection light source driving control circuit includes a light source gating control module 1, a first driving logic module 2, a second driving logic module 3, a third driving logic module 4, a red laser output unit 6, a blue laser output unit 7, and a green laser output unit 8, specifically, the red, blue, and green laser output units 6, 7, and 8 respectively include red laser output ends R-C, blue laser output ends B-C, and green laser output ends G-C, and each color laser output end may specifically be a driving end of a corresponding color laser.
The input end of the light source gating control module 1 and the input end of the first driving logic module 2 are respectively connected with the output end OUT of the projection light source system, the output end of the light source gating control module 1 is respectively connected with the red laser output unit 6, the blue laser output unit 7 and the green laser output unit 8, so that at least one light source laser output unit, namely a primary light output unit, is selected from the red laser output unit 6, the blue laser output unit 7 and the green laser output unit 8 through the light source gating control module 1 and the first driving logic module 2 based on a plurality of logic signals output by the projection light source system, and the at least one primary light output unit at least comprises the red laser output unit 6 and the blue laser output unit 7.
The output end of the projection light source system outputs a plurality of logic signals, including a primary color output control signal and a primary color brightness adjusting signal.
The output end of the first driving logic module 2 is connected with the input end of the light source gating control module 1, the input end of the second driving logic module 3 and the input end of the third driving logic module 4 respectively, the input end of the second driving logic module 3 is connected with the output end OUT of the projection light source system, and the output end of the second driving logic module 3 is connected with the input end of the third driving logic module 4 and the green laser output unit 8 respectively; the input end of the third driving logic module 4 is connected to the output end of the light source gating control module 1, and the output end of the third driving logic module 4 is connected to the blue laser output unit 6, so as to generate a corresponding color light lightening time sequence signal through the primary color output control signal in the logic signals through the first driving logic module 2, the second driving logic module 3, and the third driving logic module 4, and output the color light lightening time sequence signal to at least one primary color light output unit, and output a primary color light brightness adjusting signal in the plurality of logic signals to the at least one primary color light output unit through the light source gating control module 1 and the output end OUT of the projection light source system, so that each primary color light output unit in the at least one primary color light output unit outputs a corresponding color light.
As shown in fig. 1, the projection light source driving control circuit comprises a light source gating control module 1, a first driving logic module 2, a second driving logic module 3, a third driving logic module 4, and further comprises red laser output ends R-C, blue laser output ends B-C and green laser output ends G-C; and, as shown in fig. 2, further comprises a primary light time sequence output module 5. The blue laser output unit comprises a primary light time sequence output module 5. The blue laser output unit further comprises a primary light time sequence output module, wherein the input end of the primary light time sequence output module 5 is respectively connected with the output end OUT of the projection light source system, the output end of the first driving logic module 2 and the output end of the light source gating control module 1, and is used for receiving the logic signal directly output by the projection light source system and the logic signal output by the first driving logic module 2 and selectively outputting the logic signal to the blue laser output unit.
Specifically, the input end of the light source gating control module 1, the input end of the first driving logic module 2, and the input end of the primary light timing output module 5 are respectively connected to the output end OUT of the projection light source system, and the output end signal of the projection light source system may include multiple primary color brightness adjustment signals and primary color output control signals.
The output end of the light source gating control module 1 is connected with the red laser output end R-C, the input end of the primary light time sequence output module 5 and the green laser output end G-C respectively, so that at least one primary light output end is selected from the red laser output end R-C, the blue laser output end B-C and the green laser output end G-C through the light source gating control module 1, the first driving logic module 2 and the primary light time sequence output module 5 based on a plurality of logic signals output by the projection light source system, and the at least one primary light output end at least comprises the blue laser output end B-C;
the output end of the first driving logic module 2 is connected with the input end of the light source gating control module 1, the input end of the primary light time sequence output module 5, the input end of the second driving logic module 3 and the input end of the third driving logic module 4 respectively, the input end of the second driving logic module 3 is connected with the output end OUT of the projection light source system, the output end of the second driving logic module 3 is connected with the input end of the third driving logic module 4 and the green laser output end G-C respectively, the input end of the third driving logic module 4 is connected with the output end of the light source gating control module 1, the output end of the third driving logic module 4 and the output end of the primary light time sequence output module 5 are connected with the blue laser output end B-C respectively, so that the primary light time sequence output control signal included in a plurality of logic signals is output through the first driving logic module 2, The second driving logic module 3 and the third driving logic module 4 generate corresponding color light lightening time sequence signals, output the color light lightening time sequence signals to at least one primary light output end, and output a primary light brightness adjusting signal in the plurality of logic signals to the at least one primary light output end through the light source gating control module 1 and the output end OUT of the projection light source system, so that the primary light output unit corresponding to each primary light output end in the at least one primary light output end outputs corresponding color light.
The input end of the light source gating control module 1, the input end of the first driving logic module 2 and the input end of the primary light time sequence output module 5 are respectively connected with the output end OUT of the projection light source system, and the output end of the light source gating control module 1 is respectively connected with the red laser output end R-C, the input end of the primary light time sequence output module 5 and the green laser output end G-C. Therefore, when the projection light source system inputs a plurality of logic signals to the projection light source driving circuit through the output terminal OUT, the projection light source driving control circuit can select at least one of the primary light output terminals from the red laser output terminal R-C, the blue laser output terminal B-C and the green laser output terminal G-C through the light source gating control module 1, the first driving logic module 2 and the primary light time sequence output module 5 based on the plurality of logic signals.
The output end of the first driving logic module 2 is connected with the input end of the light source gating control module 1, the input end of the primary light time sequence output module 5, the input end of the second driving logic module 3 and the input end of the third driving logic module 4 respectively, the input end of the second driving logic module 3 is connected with the output end OUT of the projection light source system, the output end of the second driving logic module 3 is connected with the input end of the third driving logic module 4 and the green laser output end G-C respectively, the input end of the third driving logic module 4 is connected with the output end of the light source gating control module 1, and the output end of the third driving logic module 4 and the output end of the primary light time sequence output module 5 are connected with the blue laser output end B-C respectively. Therefore, the projection light source driving control circuit can generate corresponding color light lightening time sequence signals through the first driving logic module 2, the second driving logic module 3 and the third driving logic module 4 based on the primary color output control signals included in the plurality of logic signals, and output the color light lightening time sequence signals to at least one primary color light output end.
The primary color light output unit corresponds to at least one primary color light output unit, so that the projection light source driving circuit can output corresponding color light through at least one primary color light output unit based on the red light brightness adjusting signal, the green light brightness adjusting signal, the blue light brightness adjusting signal and the primary color light output control signal which are included in the plurality of logic signals through the circuit module, specifically, a light source gating control module, a first driving logic module is used for gating and outputting the primary color light brightness adjusting signal to at least a red laser output unit and a blue laser output unit according to the light source type and outputting the primary color light brightness adjusting signal to a green laser output unit in a conditional mode, and a corresponding color lighting time sequence signal is generated through the first driving logic module, a second driving logic module and a third driving logic module and is output to the red laser output unit and the blue laser output unit, or output to the red, green, and blue laser output units, so as to implement drive control of at least one laser light source, such as a two-color laser light source or a three-color laser light source, that is, the projection light source drive control circuit provided in the embodiment of the present invention can selectively access the two-color laser light source or the three-color laser light source through a plurality of logic signals, so as to be suitable for drive control of a plurality of laser light sources, implement output control of different primary color light brightness adjustment signals of a plurality of projection light sources, and adjust the brightness of the projection light source.
It should be noted that the primary color light brightness adjustment signal may further include a yellow light brightness adjustment signal, where the yellow light brightness adjustment signal is output to the blue laser output unit, the yellow light is obtained through indirect conversion by the wavelength conversion device in the blue laser excitation light source optical path, and the timing signal for lighting the yellow light color is obtained through logical operation of the timing signals of the red light and the green light.
It should be noted that, in the embodiment of the present invention, the signal may be effective at a high level or may be effective at a low level, and the embodiment of the present invention is not particularly limited to this. In the embodiment of the present invention, the signal is effectively illustrated as high level.
It should be further noted that the primary light output unit may be a laser, for example, the primary light output unit may be a red laser, a blue laser, and a green laser, or may be other devices, which is not specifically limited in this embodiment of the present invention.
In addition, the primary color output control signal is used to control the color light output by the primary color light output unit.
The color light timing signal is used to control the order in which the projection light source driving control circuit drives the various primary light output units to output the color light.
It should be further noted that the output end of the projection system includes an enable control signal end, a red light brightness adjusting end R _ PWM, a green light brightness adjusting end G _ PWM, a blue light brightness adjusting end B _ PWM, a yellow light brightness adjusting end Y _ PWM, a lighting control signal end D, and a primary color output control signal end EN, where the primary color output control signal end EN may include a red light output control signal R _ EN, a blue light output control signal B _ EN, and a green light output control signal B _ EN.
In addition, the gate control signal terminal may include a first gate control signal terminal a, a second gate control signal terminal B, and a third gate control signal terminal C, and accordingly, the gate control signal includes a first gate control signal, a second gate control signal, and a third gate control signal.
IN one embodiment, when the logic signal outputted by the strobe signal control is 110, and the red laser output terminal R-C is connected to the red laser output unit 6, the blue laser output terminal B-C is connected to the blue laser output unit 7, and the green laser output terminal G-C is connected to the green laser output unit 8, referring to fig. 2, the first input terminal a1 of the light source strobe control module 1 is connected to the first strobe control signal terminal a, the second input terminal B1 of the light source strobe control module 1 is connected to the second strobe control signal terminal B, the third input terminal C1 of the light source strobe control module 1 is connected to the third strobe control signal terminal C, the fourth input terminal IN of the light source strobe control module 1 and the first input terminal of the first driving logic module 2 are respectively connected to the strobe control signal terminal D, the fifth input terminal B of the light source strobe control module 1 is connected to the green light luminance adjustment terminal G _ PWM, the sixth input end a of the light source gating control module 1 is connected with the red light brightness adjusting end R _ PWM, the first output end ax of the light source gating control module 1 and the first output end 41 of the third driving logic module 4 are respectively connected with the first driving end 61 of the red laser output unit 6, and the second output end of the light source gating control module 1 is grounded. A third output end bx of the light source gating control module 1 is connected with a first input end 51 of the primary light time sequence output module 5, a fourth output end by of the light source gating control module 1 is connected with a first driving end 81 of the green laser output unit 8, a seventh output end of the light source gating control module 1 is connected with a third input end 53 of the primary light time sequence output module, and an eighth output end cy of the light source gating control module 1 is grounded; the second input end 22 of the first driving logic module 2 is connected to the primary color output control signal end EN, the first output end 23 of the first driving logic module 2 is connected to the seventh output end cx of the light source gating control module 1, the third input end 53 of the primary color light timing output module 5 and the first input end 31 of the second driving logic module 3, the second output end 24 of the first driving logic module 1 is connected to the fourth input end 54 of the primary color light timing output control module 5 and the second input end 43 of the third driving logic module 4, the third output end 25 of the first driving logic module 2 is connected to the second input end 32 of the second driving logic module 3, the third input end 44 of the third driving logic module 4 and the fifth input end 55 of the primary color light timing output module 5, the third input end 33 of the second driving logic module 3 is connected to the second gating control signal end B, the output end 34 of the second driving logic module 3 is connected with the fourth input end 45 of the third driving logic module 4 and the second driving end 82 of the green laser output unit 8, the third input end 35 of the second driving logic module 3 is grounded, and the second output end 46 of the third driving logic module 4 is connected with the first driving end 71 of the blue laser output unit 7; the sixth input end 56 of the primary light time sequence output module 5 is connected to the blue light brightness adjusting end B _ PWM, the seventh input end 57 of the primary light time sequence output module 5 is connected to the yellow light brightness adjusting end Y _ PWM, and the output end 58 of the primary light time sequence output module 5 is connected to the second driving end 72 of the blue laser output unit 7.
Since the first input terminal a1 of the light source gating control module 1 is connected with the first gating control signal terminal a, the second input end B1 of the light source gating control module 1 is connected with the second gating control signal end B, the third input end C1 of the light source gating control module 1 is connected with the third gating control signal end C, the fourth input end IN of the light source gating control module 1 is connected with the lighting control signal end D, the fifth input end B of the light source gating control module 1 is connected with the green light brightness adjusting end G _ PWM, the sixth input end a of the light source gating control module 1 is connected with the red light brightness adjusting end R _ PWM, the first output end ax of the light source gating control module 1 is connected with the first driving end 61 of the red laser output unit 6, the second output end ay of the light source gating control module 1 is grounded, and the fourth output end by of the light source gating control module 1 is connected with the first driving end 81 of the green laser output unit 8. Therefore, the light source gating control module 1 may output the red luminance adjustment signal from the red luminance adjustment terminal R _ PWM to the red laser output unit 12 and the green luminance adjustment signal from the green luminance adjustment terminal G _ PWM to the green laser output unit 8 based on the first gating control signal from the first gating control signal terminal a, the second gating control signal from the second gating control signal terminal B, the third gating control signal from the third gating control signal terminal C, and the lighting control signal from the lighting control signal terminal D.
The second input end 22 of the first driving logic module 2 is connected to the primary color output control signal end EN, the first output end 23 of the first driving logic module 2 is connected to the third input end 53 of the primary color light time sequence output module 5, the second output end 24 of the first driving logic module 2 is connected to the fourth input end 54 of the primary color light time sequence output control module 5, the third output end 25 of the first driving logic module 2 is connected to the fifth input end 55 of the primary color light time sequence output module 5, the sixth input end 56 of the primary color light time sequence output module 5 is connected to the blue light brightness adjusting end B _ PWM, the seventh input end 57 of the primary color light time sequence output module 5 is connected to the yellow light brightness adjusting end Y _ PWM, and the output end 58 of the primary color light time sequence output module 5 is connected to the second driving end 72 of the blue laser output unit. Therefore, the first driving logic block 2 and the primary light timing output block 5 can output the blue light luminance adjusting signal from the blue light luminance adjusting terminal B _ PWM or the yellow light luminance adjusting signal from the yellow light luminance adjusting terminal Y _ PWM to the blue laser output unit based on the lighting control signal and the primary light output control signal from the primary light output control signal terminal EN.
It should be noted that, because the projection light source only includes the lasers of three primary colors of red, green and blue, and the yellow light is generated by exciting the yellow phosphor in the color wheel module with the blue laser as the excitation light source, the brightness of the yellow light is indirectly controlled by the driving of the blue laser, and the regulation and control of the yellow light is realized by driving the blue laser, that is, the brightness regulation signal corresponding to the yellow light is also output to the blue laser, so that the PWM value drives the blue laser to work, thereby indirectly realizing the output of the yellow light according to the preset brightness.
And because the first output end 23 of the first driving logic module 2 is connected to the first input end 31 of the second driving logic module 3, the second output end 24 of the first driving logic module 1 is connected to the second input end 43 of the third driving logic module 4, the third output end 25 of the first driving logic module 2 is connected to the second input end 32 of the second driving logic module 3, the third input end 44 of the third driving logic module 4 and the fifth input end 55 of the primary light time sequence output module 5, respectively, the third input end 33 of the second driving logic module 3 is connected to the second gate control signal end B, the output end 34 of the second driving logic module 3 is connected to the fourth input end 45 of the third driving logic module 4 and the second driving end 82 of the green laser output unit 8, the third input end 35 of the second driving logic module 3 is grounded, the second output end 46 of the third driving logic module 4 is connected to the first driving end 71 of the blue laser output unit 7, the first output end 41 of the third driving logic module 4 is connected to the first input end 61 of the red laser output unit 6, and the seventh output end 1013 of the light source gating control module 1 is connected to the first input end 42 of the third driving logic module 4. Therefore, the first driving logic module 2, the second driving logic module 3 and the third driving logic module 4 may generate a color light lighting timing signal based on the primary color output control signal and the dot control signal, and output the color light lighting timing signal to a primary color light output unit corresponding to the primary color output control signal, the primary color light output unit including the red laser output unit 6, the blue laser output unit 7 or the green laser output unit 8.
And the primary color light output unit corresponding to the primary color output control signal can output corresponding color light based on the red light brightness adjusting signal, the green light brightness adjusting signal, the blue light brightness adjusting signal, the yellow light brightness adjusting signal and the color light spot brightness timing sequence signal, so that the driving control of the three laser light source output units is realized.
The primary light output control unit corresponding to the primary light output control signal may output corresponding color light based on the red light brightness adjustment signal, the green light brightness adjustment signal, the blue light brightness adjustment signal, the yellow light brightness adjustment signal, and the color light brightness timing signal, and the operation of outputting corresponding color light may be: when the primary color light output unit corresponding to the primary color output control signal is the red laser control unit 6, the red laser output unit 6 may output red light based on the color light brightness timing signal and the red light brightness adjustment signal; when the primary color light output unit corresponding to the primary color output control signal is the green laser output unit 8, the green laser output unit 8 may output green light based on the color light timing signal and the green light brightness adjustment signal; when the primary color light output unit corresponding to the primary color output control signal is the blue laser output unit 7, and the blue laser output unit 7 receives the blue brightness adjustment signal, the blue laser output unit 7 may output blue light based on the color light brightness timing signal and the blue brightness adjustment signal; when the primary color light unit corresponding to the primary color output control signal is the blue laser output unit 7 and the blue laser output unit 7 receives the yellow brightness adjustment signal, the yellow light is output in the rear-end optical path by the driving control of the blue laser output unit 7 based on the color light brightness timing signal and the yellow brightness adjustment signal.
It should be noted that, when the projection light source driving control circuit drives the three-color laser light source, the laser brightness of the three-color laser light source is high, the purity is good, and the color gamut range is wide, so that the color saturation and the color brightness are increased, the color cast problem is eliminated, the efficiency of outputting color light by the laser light source is improved, and the projection effect is further improved.
It should be further noted that the red light brightness adjustment signal is used for adjusting the brightness of the red light output by the primary light output unit, and the red light brightness adjustment signal can be output to the corresponding primary light output unit only when the red light brightness adjustment signal is not 0, so as to light the primary light output unit, and enable the primary light output unit to output the red light; the green light brightness adjusting signal is used for adjusting the brightness of green light output by the primary light output unit, and the green light brightness adjusting signal can be output to the corresponding primary light output unit only when the green light brightness adjusting signal is not 0, so that the primary light output unit is lightened, and the primary light output unit outputs the green light; the blue light brightness adjusting signal is used for adjusting the brightness of the blue light output by the primary light output unit, the yellow light brightness adjusting signal is used for adjusting the brightness of the yellow light output by the primary light output unit, and the blue light brightness adjusting signal or the yellow light brightness adjusting signal can be output to the blue laser output unit only when the blue light brightness adjusting signal or the yellow light brightness adjusting signal is not 0, so that the blue laser output unit is lightened, and the blue light or the yellow light is output by the blue laser output unit. In the embodiment of the present invention, the brightness adjustment signals between the red light brightness adjustment signal, the blue light brightness adjustment signal, the yellow light brightness adjustment signal, and the green light brightness adjustment signal may be the same or different, and this is not specifically limited in the embodiment of the present invention.
In addition, in the embodiment of the present invention, when the red laser output end R-C is connected to the red laser output unit 6, the blue laser output end B-C is connected to the blue laser output unit 7, and the green laser output end G-C is connected to the green laser output unit 8, the projection light source driving control circuit can drive the three primary color light output units of the blue laser output unit 7, the red laser output unit 6, and the blue laser output unit 8 in the above manner; when the red laser output end R-C is connected with the red laser output unit 6, and the blue laser output end B-C is connected with the blue laser output unit 7, the driving circuit can also drive two primary color light output units, namely the blue laser output unit 7 and the red laser output unit 6; when the blue laser output terminals B-C are connected to the blue laser output unit 7, it is also possible to drive only the blue laser output unit 7 as well. That is, when the projection apparatus includes three primary color light units of the blue laser output unit 7, the red laser output unit 6, and the blue laser output unit 8, the light source driving control may be performed by the projection light source driving control circuit according to the embodiment of the present invention, and when the projection apparatus includes two primary color light units of the blue laser output unit 7 and the red laser output unit 6, the light source driving control may also be performed by the projection light source driving control circuit.
In one implementation, when the primary light output unit is a laser, and when the first gate control signal is 0, the second gate control signal is 0, and the third gate control signal is 1, that is, when the projection light source driving control circuit can drive two primary color lasers of the blue laser 7 and the red laser 6, since the red light is generated by the red laser and the green, blue and yellow light are generated by the blue laser, the light intensity of the red light, the green light, the blue light and the yellow light, the light source gating control module 1 outputs the red light brightness adjusting value to a red laser 6, outputs the green light brightness adjusting signal to a primary light time sequence output module 5, the primary light time sequence output module 5 can output a green light brightness adjusting signal, a blue light brightness adjusting signal or a yellow light brightness adjusting signal to the blue primary light device 7 based on the primary light output control signal and the point light control signal; the first driving logic module 2, the second driving logic module 3 and the third driving logic module 4 can generate a color light lighting timing signal based on the primary color output control signal and the lighting control signal, and output the color light lighting timing signal to a primary color light device corresponding to the primary color output control signal; the primary color light device corresponding to the primary color output control signal can output corresponding color light based on the red light brightness adjusting signal, the green light brightness adjusting signal, the blue light brightness adjusting signal, the yellow light brightness adjusting signal and the lighting timing signal.
For example, when the projection light source driving control circuit drives two primary color lasers, i.e. the first gate control signal is 0, the second gate control signal is 0, and the third gate control signal is 1, in the two-color laser light source and color light output timing diagram shown in fig. 3, since the red light is generated by the red laser and the green, blue and yellow light are generated by the blue laser, if the primary color output control signal is the red output control signal 100, the primary color laser corresponding to the color control signal is the red laser 6, the light source gate control module 1 can send the red brightness adjustment signal to the red laser 6, the first driving logic module 2 and the third driving logic module 3 can send the red brightness adjustment signal to the red laser 6 based on the red output control signal 100 and the dot control signal, a red light lighting timing signal is generated and output to the red laser light source 6, and the red laser can output red light based on the red light lighting timing signal and the red light luminance adjustment signal.
If the primary color light device corresponding to the primary color output control signal is the blue primary color light device 7 when the primary color output control signal is the green output control signal 010, the primary color light timing output module 5 may output the green light brightness adjusting signal to the blue laser device 7 based on the green output control signal 010 and the dot control signal; the first, second and third driving logic modules 2, 3 and 4 generate a green light-on timing signal based on the green output control signal and the dot control signal and output the green light-on timing signal to the blue laser 7, and the blue laser 7 may output green light based on the green light brightness adjustment signal and the green light-on timing signal.
If the primary color light device corresponding to the primary color output control signal is the blue primary color light device 7 when the primary color output control signal is the blue output control signal 001, the primary color light timing output module 5 may output the blue light brightness adjusting signal to the blue laser device 7 based on the blue output control signal 001 and the spot control signal; the first, second and third driving logic modules 2, 3 and 4 generate a blue light lighting timing signal based on the blue output control signal and the lighting timing signal and output the lighting timing signal to the blue laser 7, and the blue laser 7 may output blue light based on the blue light brightness adjustment signal and the blue light lighting timing signal. If the color control signal is a yellow output control signal 110, and the primary color light device corresponding to the primary color output control signal is a blue primary color light device 7, the primary color light timing output module 5 may output the yellow brightness adjustment signal to the blue laser device 7 based on the yellow output control signal 110 and the lighting control signal; the first driving logic module 2, the second driving logic module 3 and the third driving logic module 4 generate a yellow light lighting timing signal based on the yellow output control signal and the lighting timing signal, and output the yellow light lighting timing signal to the blue laser 7, and the blue laser 7 may output yellow light based on the yellow light brightness adjustment signal and the yellow light lighting timing signal.
It should be further noted that, in the embodiment of the present invention, the primary color output control signal terminal may further include a red output control signal terminal R _ EN, a green output control signal terminal G _ EN, and a blue output control signal terminal B _ EN, which is not specifically limited in this embodiment of the present invention.
In addition, since the color light timing control signal is used to control the order in which the projection light source driving control circuit drives the various primary light output units to output color light, when the red laser output unit outputs red light, the blue laser output unit does not output blue light or yellow light, and the green laser output unit does not output green light, and similarly, when the blue laser output unit outputs blue light or yellow light, the red laser output unit does not output red light and the green laser output unit does not output green light; when the green laser output unit outputs green light, the red primary color light does not output red light, and the blue laser output unit does not output blue light or yellow light.
Referring to fig. 2, a first input terminal A1B1C1 of the light source gating control module 1 is connected to a gating control signal terminal ABC, a second input terminal IN of the light source gating control module 1 and a first input terminal 21 of the first driving logic module 2 are respectively connected to a lighting control signal terminal D, a third input terminal B of the light source gating control module 1 is connected to a green brightness adjustment terminal G _ PWM, a fourth input terminal a of the light source gating control module 1 is connected to a red brightness adjustment terminal R _ PWM, a fifth input terminal cx of the light source gating control module 1 is connected to a first output terminal 23 of the first driving logic module 2, so that at least one primary color light output is selected from a red laser output terminal R-C, a blue laser output terminal B-C and a green laser output terminal G-C through the light source gating control module 1 based on the gating control signal and the lighting control signal, by the light source gating control module 1 Outputting; the first output end ax of the light source gating control module 1 is connected with the input end Br of the red light control unit 117, and the driving output end 121 of the red light control unit 117 is connected with the red laser output end R-C, so that when the red laser output end R-C is gated, a red light brightness adjusting signal is output to the red laser output end R-C through the red light control unit 117; the second output by of the light source gating control module 1 is connected to the input Bg of the green light control unit 118, and the driving output 131 of the green light control unit 118 is connected to the green laser output G-C, so that when the green laser output G-C is gated, the green light brightness adjusting signal is output to the green laser output G-C through the green light control unit 118; the third output terminal ay of the light source gating control module 1 is connected with the first input terminal 51 of the primary light time sequence output module 5, and the fourth output terminal bx of the light source gating control module 1 is connected with the second input terminal 52 of the primary light time sequence output module 5, so that after at least one primary light output terminal is gated, at least one of the green light brightness adjusting signal, the blue light brightness adjusting signal and the yellow light brightness adjusting signal is output to the blue laser output terminal B-C through the first driving logic module 1 and the primary light time sequence output module 5 based on the lighting control signal and the primary light output control signal.
In addition, referring to fig. 2, the fifth output terminal c of the light source gating control module 1 is connected to the first input terminal 42 of the third driving logic module 4, the sixth input terminal cy of the light source gating control module 1 is grounded, and when the projection light source driving control circuit gates the output terminal of the primary light or the output terminals of two primary lights in the projection light source driving control circuit 3, the light source gating control module can receive a low level signal and output the low level signal to the third driving logic circuit through the fifth output terminal c.
It should be noted that the first input end of the light source gating control module includes a first gating terminal a1, a second gating terminal B1, and a third gating terminal C1. The drive output terminal of the red light control unit includes the first drive terminal Sr and the second drive terminal Ar. The driving output end of the green light control unit comprises a first driving end Sg and a second driving end Ag.
When the red laser output end R-C is connected to the red laser output unit, the green laser output end G-C is connected to the green laser output unit, and the blue laser output end B-C is connected to the blue laser output unit, referring to fig. 2 again, since the first gating end a1 of the light source gating control module 1 is connected to the first gating signal end gating control signal end a, the second gating end B1 of the light source gating control module 1 is connected to the second gating signal end B, the third gating end C1 of the light source gating control module 1 is connected to the third gating signal end C, the first output end ax of the light source gating control module 1 is connected to the input end Br of the red light control unit 117, and the second output end by of the light source gating control module 1 is connected to the input end Bg of the green light control unit 118. Therefore, the light source gating control module 1 may output the red light luminance adjusting signal to the red light control unit 117 and the green light luminance adjusting signal to the green light control unit 118 based on the first gating control signal, the second gating control signal, the third gating control signal, and the lighting control signal.
And because the first driving end Sr of the red light control unit 117 is connected to the first input end 61 of the red laser output unit 6, the second driving end Ar of the red light control unit 117 is connected to the second input end 62 of the red laser output unit 6, the first driving end Ag of the green light control unit 118 is connected to the first input end 81 of the green laser output unit 8, and the second driving end Sg of the green light control unit 118 is connected to the second input end 82 of the green laser output unit 8. Therefore, the red light control unit 13 can output the red light brightness adjustment signal to the red laser output unit 6, the green light control unit 118 can output the green light brightness adjustment signal to the green laser output unit 8, and the primary light timing output module 5 can output the blue light brightness adjustment signal or the yellow light brightness adjustment signal to the blue laser output unit 7 based on the primary light output control signal and the lighting control signal.
It should be noted that, in the embodiment of the present invention, the light source gating control module 1, the red light control unit 117, the green light control unit 118, and the primary light timing output module 5 may be switch gating control devices, for example, the primary light timing output module 5 is an ADG708BRUZ logic selection chip, and may also be other devices, which is not specifically limited in this embodiment of the present invention.
Referring to fig. 4, the first driver logic module 2 includes a first logic gate circuit 26, a second logic gate circuit 27 and a third logic gate circuit 28.
The first input end 261 of the first logic gate circuit 26, the first input end 271 of the second logic gate circuit 27 and the first input end 281 of the third logic gate circuit 28 are respectively connected with the lighting control signal end D, the second input end 262 of the first logic gate circuit 26, the second input end 272 of the second logic gate circuit 27 and the second input end 282 of the third logic gate circuit 28 are respectively connected with the primary color output control signal end EN, and the output end 283 of the first logic gate circuit 26 is respectively connected with the input end of the light source gating control module 1, the third input end 53 of the primary color light sequential output module 5 and the first input end 31 of the second driving logic module 3; the output end 273 of the second logic gate circuit 27 is connected to the fourth input end 54 of the primary light time sequence output module 5 and the first input end of the third driving logic module 4 respectively; the second input terminal of the third logic gate circuit is connected to the output terminal of the light source selection module, and the output terminal 283 of the third logic gate circuit 28 is connected to the fifth input terminal 55 of the primary light time sequence output module 5, the second input terminal 32 of the second driving logic module 2, and the third input terminal 44 of the third driving logic module 4, respectively.
It should be noted that the first logic gate circuit, the second logic gate circuit, and the third logic gate circuit may all be and gate circuits, but in practical applications, the first logic gate circuit, the second logic gate circuit, and the third logic gate circuit may also be other logic gate circuits, and this is not limited in this embodiment of the present invention.
Referring to fig. 4, the second drive logic block 3 includes a fourth logic gate circuit 36, a fifth logic gate circuit 37, and a timing control circuit device 38.
A first input 361 of the fourth logic gate circuit 36 is connected to the first output 23 of the first driver logic module 2, a second input 362 of the fourth logic gate circuit 36 is connected to the third output 25 of the first driver logic module 2, and an output 363 of the fourth logic gate circuit 36 is connected to an input 371 of the fifth logic gate circuit 37; an output end 372 of the fifth logic gate circuit 37 is connected to the first input end 381 of the timing control circuit device 38, a second input end 382 of the timing control circuit device 38 is connected to the gate control signal end, an output end 383 of the timing control circuit device 38 is connected to the fourth input end 45 of the third driving logic module 4 and the blue laser output end, respectively, and a third input end 384 of the timing control circuit device 38 is grounded.
It should be noted that the fourth logic gate circuit 36 may be an and gate circuit, the fifth logic gate circuit 37 may be an not gate circuit, and the timing control circuit device 38 may be a light source gate, but in practical applications, the fourth logic gate circuit 36 and the fifth logic gate circuit 37 may also be other logic gate circuits, and the timing control circuit device 38 may also be other circuit elements, which is not specifically limited in this embodiment of the present invention.
Referring to fig. 4, the third driving logic block 4 includes a sixth logic gate circuit 47, a seventh logic gate circuit 48, an eighth logic gate circuit 49, and a buffer 410;
a first input 471 of the sixth logic gate 47 is connected to the second output 24 of the first driver logic module 2, a second input 472 of the sixth logic gate 47 is connected to the third output 25 of the first driver logic module 2, and an output 473 of the sixth logic gate 47 is connected to the first input 481 of the seventh logic gate 48; a second input terminal 482 of the seventh logic gate circuit 48 is connected to the output terminal of the light source gating control module 1, an output terminal 483 of the seventh logic gate circuit 48 is connected to the input terminal 4101 of the buffer 410 and the input terminal 491 of the eighth logic gate circuit 49, respectively, and an output terminal 492 of the eighth logic gate circuit 49 is connected to the red laser output terminal; the conduction terminal 4103 of the buffer 4101 is connected to the output terminal 34 of the second drive circuit 3, and the output terminal 4102 of the buffer 410 is connected to the blue laser output terminal.
It should be noted that the sixth logic gate circuit 47 and the seventh logic gate circuit 48 may be an and circuit, the eighth logic gate circuit 49 may be an not gate circuit, and in practical applications, the sixth logic gate circuit 47, the seventh logic gate circuit 48, and the eighth logic gate circuit 49 may also be other logic gate circuits, which is not limited in this embodiment of the present invention.
In addition, in the embodiment of the present invention, referring to fig. 4, the first input terminal 261 of the first logic gate circuit 26, the first input terminal 271 of the second logic gate circuit 27, and the first input terminal 281 of the third logic gate circuit 28 are respectively connected to the lighting control signal terminal D, the second input terminal 262 of the first logic gate circuit 26, the second input terminal 272 of the second logic gate circuit 27, and the second input terminal 282 of the third logic gate circuit 28 are respectively connected to the primary color output control signal terminal EN, and the output terminal 263 of the first logic gate circuit 26 is respectively connected to the input terminal of the light source gating control module 1, the third input terminal 53 of the primary color light timing output module 5, and the first input terminal 361 of the fourth logic gate circuit 36; the output end 273 of the second logic gate circuit 27 is connected to the fourth input end 54 of the primary light time sequence output module 5 and the first input end 471 of the sixth logic gate circuit 47; the output 283 of the third logic gate circuit 28 is connected to the fifth input 55 of the primary light time sequence output module 5, the second input 362 of the fourth logic gate circuit 36 and the second input 472 of the sixth logic gate circuit 47; an output terminal 363 of the fourth logic gate circuit 36 is connected to an input terminal 371 of the fifth logic gate circuit 37, an output terminal 372 of the fifth logic gate circuit 37 is connected to a first input terminal 381 of the timing control circuit device 38, a second input terminal 382 of the timing control circuit device 38 is connected to a gate control signal terminal, an output terminal 383 of the timing control circuit device 38 is connected to a conducting terminal 4103 of the buffer 410 and the blue laser output terminal, respectively, and a third input terminal 384 of the timing control circuit device 38 is grounded. The output 473 of the sixth logic gate 47 is connected to the first input 481 of the seventh logic gate 48, the output 482 of the seventh logic gate 48 is connected to the input 4101 of the buffer 410 and the input 491 of the eighth logic gate 49, and the output 492 of the eighth logic gate 49 is connected to the red laser output; an output 4102 of the buffer 410 and a blue laser output.
Since the first input terminal 261 of the first logic gate circuit 26, the first input terminal 271 of the second logic gate circuit 27, and the first input terminal 281 of the third logic gate circuit 28 are connected to the lighting control signal terminal D, respectively, the second input terminal 262 of the first logic gate circuit 26, the second input terminal 272 of the second logic gate circuit 27, and the second input terminal 282 of the third logic gate circuit 28 are connected to the primary color output control signal terminal EN, respectively; the output 273 of the second logic gate 27 is connected to the first input 471 of the sixth logic gate 47; the output 283 of the third logic gate 28 is connected to the second input 472 of the sixth logic gate 47; the output 473 of the sixth logic gate 47 is connected to the first input 481 of the seventh logic gate 48, the output 482 of the seventh logic gate 48 is connected to the input 491 of the eighth logic gate 49, and the output 492 of the eighth logic gate 49 is connected to the red laser output. Therefore, when the primary light output unit corresponding to the primary light output control signal is the red laser output unit 6 corresponding to the red laser output terminal, the first logic gate circuit 26, the second logic gate circuit 27, the third logic gate circuit 28, the sixth logic gate circuit 47, the seventh logic gate circuit 48, and the eighth logic gate circuit 49 may generate the color light emission timing signal based on the primary light output control signal and the light emission control signal, and output the color light emission timing signal to the red laser output unit 6 corresponding to the red laser output terminal. The red laser output unit may output red light based on the red output control signal and the color light timing signal.
For example, in the three-color laser light source and color light output timing diagram shown in fig. 4, when the primary color output control signal is the red output control signal 100, the primary color light output unit corresponding to the primary color output control signal is the red laser output unit 6, and the lighting control signal is a high level signal, so that the first logic gate 26, the second logic gate 27, the third logic gate 28, the sixth logic gate 47, the seventh logic gate 48, and the eighth logic gate 49 can generate a red lighting timing signal corresponding to the red output control signal based on the primary color output control signal and the lighting control signal, and output the red lighting timing signal to the red laser output unit 6 corresponding to the red laser output terminal. The red laser output unit 6 can output red light based on the red output control signal 100 and the red light lighting timing signal.
Since the output terminal 263 of the first logic gate circuit 26 is connected to the first input terminal 361 of the fourth logic gate circuit 36; the output 283 of the third logic gate circuit 28 is further connected to the second input 362 of the fourth logic gate circuit 36; an output terminal 363 of the fourth logic gate circuit 36 is connected to an input terminal 371 of the fifth logic gate circuit 37, an output terminal 373 of the fifth logic gate circuit 37 is connected to a first input terminal 381 of the timing control circuit device 38, a second input terminal 382 of the timing control circuit device 38 is connected to the second gate control signal terminal B, an output terminal 383 of the timing control circuit device 38 is connected to a conducting terminal 4103 of the buffer 410, and a third input terminal 384 of the timing control circuit device 38 is grounded. The output 483 of the seventh logic gate circuit 48 is also connected to the input 4101 of the buffer 410, and the output 4102 of the buffer 410 is connected to the blue laser output. Therefore, when the primary light output unit corresponding to the primary light output control signal is the blue laser output unit 7, the first logic gate circuit 26, the second logic gate circuit 27, the third logic gate circuit 28, the fourth logic gate circuit 36, the fifth logic gate circuit 37, the sixth logic gate circuit 47, the seventh logic gate circuit 48, the buffer 410, and the timing control circuit device 38 may generate a color-light-emission timing signal based on the primary light output control signal and the emission control signal, and output the color-light-emission timing signal to the blue laser output unit. The blue laser output unit 7 may output blue light based on the blue output control signal and the color light lighting timing signal; alternatively, the blue laser output unit 7 may output yellow light based on the yellow output control signal and the color light lighting timing signal.
For example, when the primary color output control signal is the blue output control signal 010, the primary color light output unit corresponding to the primary color output control signal is the blue laser output unit 7 corresponding to the blue laser output terminal, and the lighting control signal is a high level signal, so that the first logic gate 26, the second logic gate 27, the third logic gate 28, the fourth logic gate 36, the fifth logic gate 37, the sixth logic gate 47, the seventh logic gate 48, the buffer 410, and the timing control circuit device 38 can generate the color lighting timing signal corresponding to the blue output control signal based on the primary color output control signal and the lighting control signal, and output the color lighting timing signal to the blue laser output unit 7 corresponding to the blue laser output terminal. The blue laser output unit 7 may output blue light based on the blue output control signal 001 and the color light lighting timing signal. When the primary color output control signal is the yellow output control signal 110, the primary color light unit corresponding to the primary color output control signal is the blue laser output unit 7, and the lighting control signal is a high level signal, so that the first logic gate circuit 26, the second logic gate circuit 27, the third logic gate circuit 28, the fourth logic gate circuit 36, the fifth logic gate circuit 37, the sixth logic gate circuit 47, the seventh logic gate circuit 48, the buffer 410, and the timing control circuit device 38 can generate the color lighting timing signal corresponding to the yellow output control signal based on the primary color output control signal and the lighting control signal, and output the color lighting timing signal to the blue laser output unit 7. The blue laser output unit 7 can output yellow light based on the yellow output control signal 110 and the color light lighting timing signal.
In addition, the output 383 of the timing control circuit device 38 is also connected to the green laser output. Therefore, when the primary color light output unit corresponding to the primary color output control signal is the green laser output unit 8 corresponding to the green laser output terminal, the first logic gate circuit 26, the second logic gate circuit 27, the third logic gate circuit 28, the fourth logic gate circuit 36, the fifth logic gate circuit 37, and the timing control circuit device 38 may generate the color-light-on timing signal based on the primary color output control signal and the lighting control signal, and output the color-light-on timing signal to the green laser output unit 8 corresponding to the green laser output terminal. The green laser output unit 8 can output green light based on the green output control signal and the color light timing signal.
For example, when the primary color output control signal is the green output control signal 010, the primary color light output unit corresponding to the primary color output control signal is the green laser output unit 8, and the lighting control signal is a high level signal, and therefore, the first logic gate circuit 26, the second logic gate circuit 27, the third logic gate circuit 28, the fourth logic gate circuit 36, the fifth logic gate circuit 37, and the timing control circuit device 38 can generate the color lighting timing signal corresponding to the green output control signal based on the primary color output control signal and the lighting control signal, and output the color lighting timing signal to the green laser output unit 8. The green laser output unit 8 can output green light based on the green output control signal 010 and the color light timing signal.
In the embodiment of the present invention, when the projection light source system inputs a plurality of logic signals to the projection light source driving circuit through the output terminal, the projection light source driving control circuit may gate at least one of the red laser output terminal, the blue laser output terminal and the green laser output terminal through the light source gating control module, the first driving logic module and the primary light time sequence output module based on the plurality of logic signals. Meanwhile, the projection light source driving control circuit can generate corresponding color light lightening time sequence signals through the first driving logic module, the second driving logic module and the third driving logic module based on primary color output control signals included in the plurality of logic signals, and outputs the color light lightening time sequence signals to at least one primary color light output end. And because for each primary color light output end in at least one primary color light output end, the primary color light output end corresponds to one primary color light output unit, so the projection light source driving circuit can output corresponding color light through at least one primary color light output unit based on a red light brightness adjusting signal, a green light brightness adjusting signal, a blue light brightness adjusting signal, a yellow light brightness adjusting signal, a primary color output control signal and a color light spot brightness time sequence signal included in the plurality of logic signals, thereby realizing the driving control of at least one laser light source, such as a bicolor laser light source or a tricolor laser light source, that is, the projection light source driving control circuit provided by the embodiment of the invention can select to access the bicolor laser light source or the tricolor laser light source through a plurality of logic signals, thereby being applicable to the driving control of a plurality of laser light sources and realizing the output control of different primary color light brightness adjusting signals of a plurality of projection light sources, the brightness of the projection light source can be adjusted.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A projection light source drive control circuit, comprising:
the device comprises a light source gating control module, a first driving logic module, a second driving logic module, a third driving logic module and a primary light output unit;
the primary light output unit comprises a blue laser output unit, a green laser output unit and a red laser output unit and is used for outputting at least one color light;
the input end of the light source gating control module and the input end of the first driving logic module are respectively connected with the output end of a projection light source system, the output end of the light source gating control module is respectively connected with the blue laser output unit, the green laser output unit and the red laser output unit so as to output control signals based on primary colors of primary color output control signals output by the projection light source system, and at least one primary color light output unit is gated from the primary color light output units through the light source gating control module and the first driving logic module;
the output end of the first driving logic module is respectively connected with the input end of the light source gating control module, the input end of the second driving logic module and the input end of the third driving logic module,
the first driving logic module comprises a first logic gate circuit, a second logic gate circuit and a third logic gate circuit;
the input end of the second driving logic module is connected with the output end of the projection light source system, and the output end of the second driving logic module is respectively connected with the input end of the third driving logic module and the green laser output unit;
the input end of the third driving logic module is connected with the output end of the light source gating control module, the output end of the third driving logic module is connected with the blue laser output unit,
the first driving logic module, the second driving logic module and the third driving logic module generate corresponding color light lightening time sequence signals based on the primary color output control signals,
and outputting a primary light brightness adjusting signal output by the projection light source system to the primary light output unit according to the color light brightness timing sequence signal, so that at least one primary light output unit outputs corresponding color light.
2. The projection light source drive control circuit of claim 1,
the blue laser output unit further comprises a primary light time sequence output module, wherein the input end of the primary light time sequence output module is respectively connected with the output end of the projection light source system, the output end of the first driving logic module and the output end of the light source gating control module.
3. The projection light source driving control circuit according to claim 1, wherein the red laser output unit, the green laser output unit, and the blue laser output unit include a red laser output terminal, a green laser output terminal, and a blue laser output terminal, respectively.
4. The projection light source drive control circuit according to claim 1, wherein the at least one primary light output unit is selected from among the primary light output units, and the at least one primary light output unit includes the blue laser output unit.
5. The projection light source drive control circuit of claim 1,
the first input end of the first logic gate circuit, the first input end of the second logic gate circuit and the first input end of the third logic gate circuit are respectively connected with a lighting control signal end, the second input end of the first logic gate circuit, the second input end of the second logic gate circuit and the second input end of the third logic gate circuit are respectively connected with the primary color output control signal end, and the output end of the first logic gate circuit is respectively connected with the input end of the light source gating control module, the third input end of the primary color light time sequence output module and the first input end of the second driving logic module;
the output end of the second logic gate circuit is respectively connected with the fourth input end of the primary light time sequence output module and the first input end of the third driving logic module;
and the output end of the third logic gate circuit is respectively connected with the fifth input end of the primary light time sequence output module, the second input end of the second driving logic module and the third input end of the third driving logic module.
6. The projection light source driving control circuit according to claim 1, wherein the second driving logic block comprises a fourth logic gate circuit, a fifth logic gate circuit and a timing control circuit device;
a first input end of the fourth logic gate circuit is connected with a first output end of the first driving logic module, a second input end of the fourth logic gate circuit is connected with a third output end of the first driving logic module, and an output end of the fourth logic gate circuit is connected with an input end of the fifth logic gate circuit;
the output end of the fifth logic gate circuit is connected with the first input end of the sequential control circuit device, the second input end of the sequential control circuit device is connected with the gating control signal end, the output end of the sequential control circuit device is connected with the green laser output unit, and the third input end of the sequential control circuit device is grounded.
7. The projection light source drive control circuit of claim 1, wherein the third drive logic block comprises a sixth logic gate circuit, a seventh logic gate circuit, an eighth logic gate circuit, and a buffer;
a first input end of the sixth logic gate circuit is connected with a second output end of the first driving logic module, a second input end of the sixth logic gate circuit is connected with a third output end of the first driving logic module, and an output end of the sixth logic gate circuit is connected with a first input end of the seventh logic gate circuit;
the second input end of the seventh logic gate circuit is connected with the output end of the light source gating control module, the output end of the seventh logic gate circuit is respectively connected with the input end of the buffer and the input end of the eighth logic gate circuit, the output end of the eighth logic gate circuit is connected with the red laser output unit, and the output end of the buffer is connected with the blue laser output unit.
8. The projection light source drive control circuit of claim 1 wherein the primary color output control signals comprise one or more of the following: the red light outputs a control signal, the blue light outputs a control signal, and the green light outputs a control signal.
9. The projection light source driving control circuit according to claim 1, wherein the primary color light brightness adjustment signal comprises one or more of the following signals: red light brightness adjusting signal, blue light brightness adjusting signal and green light brightness adjusting signal.
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