CN102967991A - Method, device, system and mobile terminal for adjusting projector focal length - Google Patents

Method, device, system and mobile terminal for adjusting projector focal length Download PDF

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Publication number
CN102967991A
CN102967991A CN2012104452579A CN201210445257A CN102967991A CN 102967991 A CN102967991 A CN 102967991A CN 2012104452579 A CN2012104452579 A CN 2012104452579A CN 201210445257 A CN201210445257 A CN 201210445257A CN 102967991 A CN102967991 A CN 102967991A
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CN
China
Prior art keywords
image
sharpness
focal length
instruction
focusing
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CN2012104452579A
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Chinese (zh)
Inventor
冉飞
Original Assignee
广东欧珀移动通信有限公司
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Priority to CN2012104452579A priority Critical patent/CN102967991A/en
Publication of CN102967991A publication Critical patent/CN102967991A/en

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Abstract

The invention is applicable to the technical field of mobile terminals and provides a method, device, system and mobile terminal for adjusting projector focal length. The method includes that a first image projected by a projector module onto a projection curtain is collected; if definition of the first image is smaller than a preset definition threshold, a first focal length adjusting command is generated, and the focal length of the projector module is adjusted according to the first focal length adjusting command; a second image projected by the projector onto the projection curtain is collected; if the definition of the second image is smaller than that of the first image, a second focal length adjusting command is generated, and the focal length of the projector module is adjusted according to the second focal length adjusting command; otherwise, the focal length of the projector module is adjusted according to the first adjusting focal length command till the definition of an image collected by a camera is not lower than the preset definition threshold. By means of the method, device, system and mobile terminal, manual operation is not required in a whole process, and user experience is greatly improved.

Description

A kind of method, device, system and portable terminal of regulating the projector focal length

Technical field

The invention belongs to technical field of mobile terminals, relate in particular to a kind of method, device, system and portable terminal of regulating the projector focal length.

Background technology

At present, generally all dispose projector in the intelligent mobile terminal, in order to make the clear picture that shows on the projection screen as seen, need to regulate the focal length of projector.At present, the focal length of the most manual adjustments projector of user, yet, during the manual adjustments focal length, all need to open corresponding interface at every turn and focus, reduced user's experience.

Summary of the invention

The embodiment of the invention provides a kind of method, device, system and portable terminal of regulating the projector focal length, is intended to solve the problem of the focal length of existing manual adjustments projector.

On the one hand, provide a kind of method of regulating the projector focal length, described method comprises:

Acquired projections instrument module is projected to the first image on the projection screen;

If the sharpness of described the first image, then generates first instruction of focusing whether less than default clarity threshold, and regulate the focal length of projector module according to described first instruction of focusing;

Acquired projections instrument module is projected to the second image on the projection screen;

If the sharpness of described the second image is less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold;

If the sharpness of described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

On the other hand, provide a kind of device of regulating the projector focal length, described device comprises:

The first collecting unit is used for acquired projections instrument module and is projected to the first image on the projection screen;

The first regulon if the sharpness that is used for described the first image, then generates first instruction of focusing whether less than default clarity threshold, and is regulated the focal length of projector module according to described first instruction of focusing;

The second collecting unit is used for acquired projections instrument module and is projected to the second image on the projection screen;

The second regulon, if be used for the sharpness of described the second image less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold;

The 3rd regulon, if the sharpness that is used for described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

On the one hand, provide a kind of portable terminal again, described portable terminal comprises projector module, and described portable terminal also comprises the central processing unit CPU that is connected with described projector and the camera module that is connected with described CPU, and described camera module comprises:

The first collecting unit is used for acquired projections instrument module and is projected to the first image on the projection screen;

Described CPU comprises:

The first regulon if the sharpness that is used for described the first image, then generates first instruction of focusing whether less than default clarity threshold, and is regulated the focal length of projector module according to described first instruction of focusing;

Described camera module also comprises:

The second collecting unit is used for acquired projections instrument module and is projected to the second image on the projection screen;

Described CPU also comprises:

The second regulon, if be used for the sharpness of described the second image less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold;

The 3rd regulon, if the sharpness that is used for described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

Another aspect provides a kind of system that regulates the projector focal length, and described system comprises projection screen and aforesaid portable terminal.

In the embodiment of the invention, image on elder generation's acquired projections curtain, sharpness according to described image generates corresponding focus adjustment instruction again, regulate automatically at last the focal length of projector module by this focus adjustment instruction, realize automatically regulating the effect of the focal length of projector module, whole process does not need to operate manually, has promoted greatly user's experience.

Description of drawings

Fig. 1 is the realization flow figure of the method for the adjusting projector focal length that provides of the embodiment of the invention one;

Fig. 2 is the structured flowchart of the device of the adjusting projector focal length that provides of the embodiment of the invention two;

Fig. 3 is the structured flowchart of the portable terminal that provides of the embodiment of the invention three.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.

In embodiments of the present invention, the image on the first acquired projections curtain, the sharpness according to described image generates corresponding focus adjustment instruction again, regulates automatically at last the focal length of projector module by this focus adjustment instruction.

Below in conjunction with specific embodiment realization of the present invention is described in detail:

Embodiment one

Fig. 1 shows the realization flow of the method for the adjusting projector focal length that the embodiment of the invention one provides, and details are as follows:

In step S101, acquired projections instrument module is projected to the first image on the projection screen.

In the present embodiment, the CPU (central processing unit) of intelligent mobile terminal (Central Processing Unit, CPU) data that needs shown send projector module to, projector module is processed these data, and projection is published picture picture to projection screen, first image of camera module acquired projections to the projection screen, and the information that transmits described the first image is to CPU.Need to prove that the CPU in this example, camera module and projector module are the unit of software unit, hardware cell or the software and hardware combining of intelligent mobile terminal.

In step S102, if the sharpness of described the first image, then generates first instruction of focusing less than default clarity threshold.

In the present embodiment, after CPU receives the information of described the first image that camera module sends, obtain the sharpness of described the first image, if the sharpness of described the first image is less than default clarity threshold, then generate first instruction of focusing, regulate the focal length of projector module according to described first instruction of focusing.

Wherein, described first focus and comprise when carrying out focus adjustment selected adjusting direction in the instruction and regulate step-length.Wherein, regulate direction and comprise forward and reverse two kinds.Regulating step-length can preset, such as, take the least unit of focal length as regulating step-length.

In step S103, regulate the focal length of projector module according to described first instruction of focusing.

In step S104, acquired projections instrument module is projected to the second image on the projection screen.

In embodiments of the present invention, focus after instruction regulates the focal length of projector module according to first, camera module can continue to gather the image that projector module under this focal length is projected to projection screen, and the information that transmits this image is to CPU, by CPU the sharpness of this image being judged, and carry out follow-up operation.

In step S105, if the sharpness of described the second image less than the sharpness of described the first image, execution in step S106 then, otherwise execution in step S108.

In step S106, generate second instruction of focusing.

In embodiments of the present invention, second focus and comprise when carrying out focus adjustment selected adjusting direction in the instruction and regulate step-length.Wherein, regulate direction and comprise forward and reverse two kinds.Regulating step-length can preset, such as, take the least unit of focal length as regulating step-length.

Need to prove second focus the adjusting opposite direction in the instruction of adjusting direction and first in the instruction of focusing.Such as, first focuses adjusting direction in the instruction when being forward, and second focuses adjusting direction in the instruction for oppositely; First focuses adjusting direction in the instruction when being forward, and second focuses adjusting direction in the instruction for oppositely.In addition, the second adjusting step-length of focusing in the instruction can be identical with the first adjusting step-length of focusing in the instruction, also can be not identical.

In step S107, regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

In step S108, regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

Illustrate as follows: when the sharpness of the first image of camera module collection is lower than default clarity threshold, CPU selects forward to regulate, regulate the focal length of projector module with positive dirction, then gather the second image that is projected under this focal length on the projection screen by camera module, and whether the sharpness of judging this second image is less than the sharpness of the first image, if, then regulating in the other direction the focal length of projector module, until camera collection to the sharpness of image be not less than default clarity threshold; Otherwise, continue to regulate the focal length of projector module with positive dirction, until camera collection to the sharpness of image be not less than default clarity threshold.Certainly, when the sharpness of the first image of camera module collection is lower than default clarity threshold, CPU also can select reverse adjusting, to regulate the focal length of projector module in the other direction, then gather the second image that is projected under this focal length on the projection screen by camera module, and whether the sharpness of judging this second image is less than the sharpness of the first image, if, then regulate the focal length of projector module with positive dirction, until camera collection to the sharpness of image be not less than default clarity threshold; Otherwise, in the other direction continuing to regulate the focal length of projector module, until camera collection to the sharpness of image be not less than default clarity threshold

Present embodiment, image on elder generation's acquired projections curtain, sharpness according to described image generates corresponding focus adjustment instruction again, regulate automatically at last the focal length of projector module by this focus adjustment instruction, realize automatically regulating the effect of the focal length of projector module, whole process does not need to operate manually, has promoted greatly user's experience.

Embodiment two

Fig. 2 shows the concrete structure block diagram of the device of the adjusting projector focal length that the embodiment of the invention two provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.In the present embodiment, the device 2 of this adjusting projector focal length comprises: the first collecting unit 21, the first regulon 22, the second collecting unit 23, the second regulon 24 and the 3rd regulon 25.

Wherein, the first collecting unit 21 is used for acquired projections instrument module and is projected to the first image on the projection screen;

The first regulon 22 if the sharpness that is used for described the first image, then generates first instruction of focusing whether less than default clarity threshold, and is regulated the focal length of projector module according to described first instruction of focusing;

The second collecting unit 23 is used for acquired projections instrument module and is projected to the second image on the projection screen;

The second regulon 24, if be used for the sharpness of described the second image less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold; Further, the described first focus instruction and described the second regulating command includes and regulates direction and regulate step-length, the adjusting opposite direction in the adjusting direction in described the first regulating command and described the second regulating command; The 3rd regulon 25, if the sharpness that is used for described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

The device of the adjusting projector focal length that the embodiment of the invention provides can be applied in the embodiment of the method one of aforementioned correspondence, and details do not repeat them here referring to the description of above-described embodiment one.

Embodiment three

Fig. 3 shows the concrete structure block diagram of the portable terminal that the embodiment of the invention three provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.In the present embodiment, this portable terminal 3 comprises: projector module 31, the central processing unit CPU 32 that is connected with described projector module 31 and the camera module 33 that is connected with described CPU, this portable terminal 3 can form together with projection screen the system of an adjusting projector focal length, and described camera module 33 comprises:

The first collecting unit is used for acquired projections instrument module and is projected to the first image on the projection screen;

Described CPU 32 comprises:

The first regulon if the sharpness that is used for described the first image, then generates first instruction of focusing whether less than default clarity threshold, and is regulated the focal length of projector module according to described first instruction of focusing;

Described camera module 33 also comprises:

The second collecting unit is used for acquired projections instrument module and is projected to the second image on the projection screen;

Described CPU 32 also comprises:

The second regulon, if be used for the sharpness of described the second image less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold; Further, the described first focus instruction and described the second regulating command includes and regulates direction and regulate step-length, the adjusting opposite direction in the adjusting direction in described the first regulating command and described the second regulating command

The 3rd regulon, if the sharpness that is used for described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.

The portable terminal that the embodiment of the invention provides can be applied in the embodiment of the method one of aforementioned correspondence, and details do not repeat them here referring to the description of above-described embodiment one.

It should be noted that among the said system embodiment that included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.

In addition, one of ordinary skill in the art will appreciate that all or part of step that realizes in the various embodiments described above method is to come the relevant hardware of instruction to finish by program, corresponding program can be stored in the computer read/write memory medium, described storage medium is such as ROM/RAM, disk or CD etc.

The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (7)

1. a method of regulating the projector focal length is characterized in that, described method comprises:
Acquired projections instrument module is projected to the first image on the projection screen;
If the sharpness of described the first image, then generates first instruction of focusing whether less than default clarity threshold, and regulate the focal length of projector module according to described first instruction of focusing;
Acquired projections instrument module is projected to the second image on the projection screen;
If the sharpness of described the second image is less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold;
If the sharpness of described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.
2. the method for claim 1, it is characterized in that, the described first focus instruction and described the second regulating command includes and regulates direction and regulate step-length, the adjusting opposite direction in the adjusting direction in described the first regulating command and described the second regulating command.
3. a device of regulating the projector focal length is characterized in that, described device comprises:
The first collecting unit is used for acquired projections instrument module and is projected to the first image on the projection screen;
The first regulon if the sharpness that is used for described the first image, then generates first instruction of focusing whether less than default clarity threshold, and is regulated the focal length of projector module according to described first instruction of focusing;
The second collecting unit is used for acquired projections instrument module and is projected to the second image on the projection screen;
The second regulon, if be used for the sharpness of described the second image less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold;
The 3rd regulon, if the sharpness that is used for described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.
4. device as claimed in claim 3, it is characterized in that, the described first focus instruction and described the second regulating command includes and regulates direction and regulate step-length, the adjusting opposite direction in the adjusting direction in described the first regulating command and described the second regulating command.
5. portable terminal, described portable terminal comprises projector module, it is characterized in that, and described portable terminal also comprises the central processing unit CPU that is connected with described projector and the camera module that is connected with described CPU, and described camera module comprises:
The first collecting unit is used for acquired projections instrument module and is projected to the first image on the projection screen;
Described CPU comprises:
The first regulon if the sharpness that is used for described the first image, then generates first instruction of focusing whether less than default clarity threshold, and is regulated the focal length of projector module according to described first instruction of focusing;
Described camera module also comprises:
The second collecting unit is used for acquired projections instrument module and is projected to the second image on the projection screen;
Described CPU also comprises:
The second regulon, if be used for the sharpness of described the second image less than the sharpness of described the first image, then generate second instruction of focusing, and regulate the focal length of projector module according to described second instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold;
The 3rd regulon, if the sharpness that is used for described the second image is not less than the sharpness of described the first image, then regulate the focal length of projector module according to described first instruction of focusing, until camera collection to the sharpness of image be not less than default clarity threshold.
6. portable terminal as claimed in claim 5, it is characterized in that, the described first focus instruction and described the second regulating command includes and regulates direction and regulate step-length, the adjusting opposite direction in the adjusting direction in described the first regulating command and described the second regulating command.
7. a system that regulates the projector focal length is characterized in that, described system comprises projection screen and such as claim 5 or 6 described portable terminals.
CN2012104452579A 2012-11-08 2012-11-08 Method, device, system and mobile terminal for adjusting projector focal length CN102967991A (en)

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CN104536249A (en) * 2015-01-16 2015-04-22 深圳市中兴移动通信有限公司 Method and device for regulating focal length of projector
CN104767934A (en) * 2015-03-19 2015-07-08 联想(北京)有限公司 Information processing method and electronic equipment
CN105301884A (en) * 2015-11-13 2016-02-03 神画科技(深圳)有限公司 Method and system for automatic focusing on multi-point reference image recognition
CN105892201A (en) * 2016-05-20 2016-08-24 深圳展景世纪科技有限公司 Projection equipment-based picture adjusting method and device
CN106303481A (en) * 2016-09-09 2017-01-04 Tcl集团股份有限公司 A kind of method and system of projection TV focusing
CN106550226A (en) * 2016-11-07 2017-03-29 北京小米移动软件有限公司 Projected picture correcting method and device
CN106707526A (en) * 2016-12-14 2017-05-24 深圳奥比中光科技有限公司 Automatic focusing method and system for light source projector
CN106709882A (en) * 2016-12-16 2017-05-24 努比亚技术有限公司 Image fusion method and device
CN106899838A (en) * 2017-03-01 2017-06-27 成都市极米科技有限公司 A kind of focusing method and system
CN106993171A (en) * 2016-01-20 2017-07-28 精工爱普生株式会社 Projecting apparatus
CN109714519A (en) * 2017-10-25 2019-05-03 成都市极米科技有限公司 A kind of method and system of adjust automatically image frame
CN109752909A (en) * 2017-11-02 2019-05-14 深圳光峰科技股份有限公司 Automatic focusing system, method and projection device
CN110392254A (en) * 2019-07-25 2019-10-29 深圳市爱培科技术股份有限公司 A kind of focusing test method and terminal device based on image definition evaluation algorithm

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CN104536249A (en) * 2015-01-16 2015-04-22 深圳市中兴移动通信有限公司 Method and device for regulating focal length of projector
CN104536249B (en) * 2015-01-16 2016-08-24 努比亚技术有限公司 The method and apparatus of regulation projector focal length
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CN104767934A (en) * 2015-03-19 2015-07-08 联想(北京)有限公司 Information processing method and electronic equipment
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CN106993171A (en) * 2016-01-20 2017-07-28 精工爱普生株式会社 Projecting apparatus
CN105892201A (en) * 2016-05-20 2016-08-24 深圳展景世纪科技有限公司 Projection equipment-based picture adjusting method and device
CN106303481A (en) * 2016-09-09 2017-01-04 Tcl集团股份有限公司 A kind of method and system of projection TV focusing
CN106303481B (en) * 2016-09-09 2019-03-19 深圳市Tcl高新技术开发有限公司 A kind of method and system of projection TV focusing
CN106550226A (en) * 2016-11-07 2017-03-29 北京小米移动软件有限公司 Projected picture correcting method and device
CN106707526A (en) * 2016-12-14 2017-05-24 深圳奥比中光科技有限公司 Automatic focusing method and system for light source projector
CN106709882A (en) * 2016-12-16 2017-05-24 努比亚技术有限公司 Image fusion method and device
CN106899838A (en) * 2017-03-01 2017-06-27 成都市极米科技有限公司 A kind of focusing method and system
CN109714519A (en) * 2017-10-25 2019-05-03 成都市极米科技有限公司 A kind of method and system of adjust automatically image frame
CN109752909A (en) * 2017-11-02 2019-05-14 深圳光峰科技股份有限公司 Automatic focusing system, method and projection device
CN110392254A (en) * 2019-07-25 2019-10-29 深圳市爱培科技术股份有限公司 A kind of focusing test method and terminal device based on image definition evaluation algorithm

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