CN105141943B - The adjusting method and device of video frame rate - Google Patents
The adjusting method and device of video frame rate Download PDFInfo
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- CN105141943B CN105141943B CN201510568166.8A CN201510568166A CN105141943B CN 105141943 B CN105141943 B CN 105141943B CN 201510568166 A CN201510568166 A CN 201510568166A CN 105141943 B CN105141943 B CN 105141943B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
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Abstract
The invention discloses a kind of adjusting method of video frame rate, this method flow includes：The frame per second of currently playing video is detected, and obtains the ratio value of gray pixels point in next frame buffer picture frame of currently playing picture frame, ratio value one preset frame rate of correspondence of each gray pixels point；When the frame per second of currently playing video is more than preset frame rate, reduce the frame per second for caching picture frame according to the corresponding adjustment factor of the ratio value of gray pixels point；According to the frame per second display caching picture frame after reduction, and according to frame per second to 3D glasses transmission frequency change directives, so that 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received.The present invention also proposes a kind of adjusting means of video frame rate.The present invention reduces the power consumption of 3D glasses and then reduces the power consumption rate of glasses by adjusting television video frame per second.
Description
Technical field
The present invention relates to the adjusting method and device in video display arts field, more particularly to a kind of video frame rate.
Background technology
With the development of intelligent television, the 3D that becomes more and more popular (three-dimensional, three dimensions is shown) technology,
User can directly watch 3D programs on TV.What is be widely used at present watches that the method for 3D programs is by wearing one partially
The optical glasses 3D glasses that shake are watched, such as shutter glasses, but for shutter type 3 D spectacles, it passes through black after energization
Block and switching at runtime is carried out to left and right eyeglass, make picture alternate by left and right eyeglass, the right and left eyes of such people can just be received
Two a series of paintings faces, then by brain compound stereoscopic image, still, during due to viewing 3D programs, program video is always with highest frame
Rate switches, and 3D glasses correspondingly carry out switching at runtime to left and right eyeglass with highest frequency always, and power consumption is big and then causes glasses to consume
Electricity is very big.
The content of the invention
The present invention provides a kind of adjusting method and device of video frame rate, and its main purpose is by adjusting television video
Frame per second, reduces the power consumption of 3D glasses and then reduces the power consumption of glasses.
To achieve the above object, the present invention provides a kind of adjusting method of video frame rate, its be applied to intelligent television and
In the 3D glasses supporting with intelligent television, the adjusting method of the video frame rate includes：
The frame per second of currently playing video is detected, and obtains grey picture in next frame buffer picture frame of currently playing picture frame
The ratio value of vegetarian refreshments, ratio value one preset frame rate of correspondence of each gray pixels point；
When the frame per second of the currently playing video is more than the preset frame rate, according to the ratio value of the gray pixels point
Corresponding adjustment factor reduces the frame per second of the caching picture frame；
The caching picture frame is shown according to the frame per second after reduction, and is sent according to the frame per second to the 3D glasses
Frequency change directive, so that the 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received
Rate.
Preferably, the frame per second of the currently playing video of detection, and obtain next frame buffer figure of currently playing picture frame
It is described after the step of ratio value of gray pixels point in piece frame, ratio value one preset frame rate of correspondence of each gray pixels point
The adjusting method of video frame rate also includes：
When the frame per second of the currently playing video is less than the preset frame rate, according to the ratio value of the gray pixels point
The frame per second of the corresponding adjustment factor increase caching picture frame；
The caching picture frame is shown according to the frame per second after increase, and is sent according to the frame per second to the 3D glasses
Frequency change directive, so that the 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received
Rate.
Preferably, it is described when the frame per second of the broadcasting video is more than preset frame rate, according to the ratio of the gray pixels point
The step of adjustment factor of example value reduces the frame per second of the caching picture frame includes：
When the frame per second of the broadcasting video is more than preset frame rate, according to the ratio value of the gray pixels point to described slow
Deposit picture frame and carry out gamma correction, and the caching picture frame after gamma correction is stored in default memory space；
The caching figure after gamma correction is reduced according to the corresponding adjustment factor of the ratio of the gray pixels point
The frame per second of piece frame；
The step of frame per second according to after reduction shows the caching picture frame includes：
The caching picture frame after gamma correction is shown according to the frame per second after reduction.
Preferably, the ratio value of gray pixels point in the next frame buffer picture frame for obtaining currently playing picture frame
Step includes：
Obtain the pixel value of each pixel in next frame buffer picture frame of currently playing picture frame；
The ratio value of gray pixels point in each pixel according to the calculated for pixel values of each pixel.
Preferably, the ratio value according to the gray pixels point carries out the step of gamma correction to the caching picture frame
Suddenly include：
According to the corresponding relation between the ratio value of default gamma correction coefficient and gray pixels point, obtain and institute
State the corresponding gamma correction coefficient of ratio value of gray pixels point；
Edlin is entered to the gamma curve of the caching picture frame according to the gamma correction coefficient, to realize to described slow
Deposit the gamma correction of picture frame.
In addition, to achieve the above object, the present invention also provides a kind of adjusting means of video frame rate, it is applied to intelligence electricity
Depending on and with the supporting 3D glasses of intelligent television, the adjusting means of the video frame rate includes：
Ratio acquisition module, for detecting the frame per second of currently playing video, and obtains the next frame of currently playing picture frame
Cache the ratio value of gray pixels point in picture frame, ratio value one preset frame rate of correspondence of each gray pixels point；
Frame rate adjustment module, for when the frame per second of the currently playing video is more than the preset frame rate, according to described
The corresponding adjustment factor of ratio value of gray pixels point reduces the frame per second of the caching picture frame；
Video playback module, for showing the caching picture frame according to the frame per second after reduction, and according to the frame
Rate is to the 3D glasses transmission frequency change directive, so that the 3D glasses are changed according to the frequency change directive received
The switching at runtime frequency of eyeglass.
Preferably, the frame rate adjustment module, is additionally operable to when the frame per second of the currently playing video is less than the default frame
During rate, according to the frame per second of the corresponding adjustment factor increase caching picture frame of the ratio value of the gray pixels point；
The video playback module, is additionally operable to show the caching picture frame according to the frame per second after increase, and according to
The frame per second is to the 3D glasses transmission frequency change directive, so that the 3D glasses refer to according to the frequency change received
The switching at runtime frequency of order modification eyeglass.
Preferably, the frame rate adjustment module includes：
Gammate, for when the frame per second of the broadcasting video is more than preset frame rate, according to the gray pixels
The ratio value of point carries out gamma correction to the caching picture frame, and in the storage of default memory space after gamma correction
The caching picture frame；
Frame rate adjustment unit, reduces by gamma school for the corresponding adjustment factor of ratio according to the gray pixels point
The frame per second of the caching picture frame after just；
The video playback module, is additionally operable to show described slow after gamma correction according to the frame per second after reduction
Deposit picture frame.
Preferably, the ratio acquisition module includes：
Pixel acquisition unit, the pixel value of each pixel for obtaining the caching picture frame；
Ratio computing unit, for gray pixels point in each pixel described in the calculated for pixel values according to each pixel
Ratio value.
Preferably, the gammate includes：
Coefficient obtains subelement, between the ratio value according to default gamma correction coefficient and gray pixels point
Corresponding relation, obtain corresponding with the ratio value of gray pixels point gamma correction coefficient；
Gamma correction subelement, for being carried out according to the gamma correction coefficient to the gamma curve of the caching picture frame
Editor, to realize the gamma correction to the caching picture frame.
The adjusting method and device of video frame rate proposed by the present invention, while intelligent television plays current video, read
The caching picture frame that next frame is to be played is taken, and the pixel value of the caching picture frame is analyzed, the caching picture frame is obtained
In gray pixels point ratio value, each gray pixels point ratio value correspondence one preset frame rate, the frame of currently playing video
When rate is more than the ratio value corresponding preset frame rate of the gray pixels point in the caching picture frame, subtract according to default adjustment factor
The frame per second of small caching picture frame, and according to the frame per second switching caching picture frame after reduction, instructed while being sent to 3D glasses, so that
3D glasses carry out frequency error factor, reduce the switching at runtime frequency of the left and right eyeglass of 3D glasses, and then reduce the power consumption of 3D glasses to subtract
The power consumption rate of small glasses.
Brief description of the drawings
Fig. 1 is the flow chart of the adjusting method first embodiment of video frame rate of the present invention；
Fig. 2 for video frame rate of the present invention adjusting method second embodiment in regulation video frame rate step refinement flow
Figure；
Fig. 3 caches gray pixels point in picture frame to be obtained in the adjusting method 3rd embodiment of video frame rate of the present invention
The refinement schematic flow sheet of ratio step；
Fig. 4 illustrates for the refinement flow of gamma correction step in the adjusting method fourth embodiment of video frame rate of the present invention
Figure；
Fig. 5 is the high-level schematic functional block diagram of the adjusting means first embodiment of video frame rate of the present invention；
Fig. 6 shows for the refinement functional module of frame rate adjustment module in the adjusting means second embodiment of video frame rate of the present invention
It is intended to；
Fig. 7 shows for the refinement functional module of ratio acquisition module in the adjusting means 3rd embodiment of video frame rate of the present invention
It is intended to；
Fig. 8 shows for the refinement functional module of gammate in the adjusting means fourth embodiment of video frame rate of the present invention
It is intended to.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of adjusting method of video frame rate.
It is the flow chart of the adjusting method first embodiment of video frame rate of the present invention shown in reference picture 1.
In the first embodiment, the adjusting method of the video frame rate includes：
Step S10, detects the frame per second of currently playing video, and obtains next frame buffer picture frame of currently playing picture frame
The ratio value of middle gray pixels point, ratio value one preset frame rate of correspondence of each gray pixels point.
Watched when playing 3D TV programme on intelligent television, it is necessary to wear 3D glasses, existing intelligent television
It when playing 3D TV programme, can typically be played with relatively higher frame per second, to increase the fluency of video playback, play video
When the current frame, television system can cache the picture frame that next frame will be played in buffer zone.When the frame picture in 3D videos
The ratio that gray pixels point is accounted for than it is larger when, it is seen that image sharpness than relatively low, even if image is seeing for grey in itself
Unclear scene, still with high frame per second in switching, therefore, it can reduce frame in the more frame switchings of these gray pixels points
Rate.It can think that the ratio value of each gray pixels point sets corresponding preset frame rate, can be by the ratio value of gray pixels point
One-to-one mapping relations are set between preset frame rate, and the ratio of gray pixels point is changing in the range of 0-1, works as ash
During the large percentage of colour vegetarian refreshments, less preset frame rate can be corresponded to, when the ratio of gray pixels point is smaller, can be corresponded to
Larger preset frame rate, in the present embodiment, when the ratio of gray pixels point is when in the range of 0-1/3, sets 120Hz frame
Rate, when the ratio of gray pixels point is when in the range of 1/3-2/3, sets 80Hz frame per second, when the ratio of gray pixels point exists
When in the range of 2/3-1,40Hz frame per second is set, in other real-time examples, other correspondence numerical value or numerical value can be set
It is interval.
The present embodiment can be when receiving the instruction of video frame rate regulation, or detect television system and commence play out 3D
During program, or when detecting between television set and 3D glasses as connection status, the frame per second of currently playing video is detected, and obtained
The ratio value of gray pixels point in next frame buffer picture frame of currently playing picture frame, wherein, the ratio of each gray pixels point
Example value one preset frame rate of correspondence.
Step S20, when the frame per second of the currently playing video is more than the preset frame rate, according to the gray pixels point
The corresponding adjustment factor of ratio reduce the frame per second of the caching picture frame.
The ratio value that the frame per second of currently playing video is more than gray pixels point in next frame buffer picture frame is corresponding default
During frame per second, illustrate that the gray pixels point ratio of next frame buffer picture frame is higher, can be played out with relatively low frame per second, and work as
The play frame rate of preceding video, than larger, therefore, it can the ratio according to gray pixels point for next frame buffer picture frame
Corresponding adjustment factor reduces frame per second, to adapt to the broadcasting of next frame buffer picture.
Step S30, the caching picture frame is shown according to the frame per second after reduction, and according to the frame per second to the 3D
Glasses transmission frequency change directive, so that the 3D glasses change the dynamic of eyeglass according to the frequency change directive received
Switching frequency.
When reducing the frame per second for caching picture frame according to the ratio of gray pixels point, in the present embodiment, by gray pixels
The ratio value that point accounts for all pixels point is divided into multiple different intervals, is that different intervals set different adjustment factors, example
Such as, currently playing frame per second is 120Hz, and when gray-scale pixels ratio value, which is more than 33%, is less than 60%, corresponding adjustment factor is 2/
3, now frame rate adjustment is 120Hz*2/3=80Hz, according to 80Hz frame per second switching caching picture frame；In other embodiments
In, certain adjustment factor can be set, according to the secured adjusted when gray pixels point ratio value is more than default ratio value
Coefficient adjustment caches the frame per second of picture frame, in the present embodiment, appropriate setting adjustment factor, it is to avoid the frame per second mistake after regulation
It is small, because the minimum frame per second that can differentiate of human eye is 24, if frame per second is decreased to too small, picture transition can be caused not connect
Pass through, influence user normally watches TV programme.
While the frame per second switching caching picture frame after with reduction, to 3D glasses transmission frequency change directives, 3D glasses
Receive after the instruction, make its play frame rate with video same according to the switching at runtime frequency of the left and right eyeglass of above-mentioned instruction modification
Step, to reduce the power consumption of 3D glasses.
Further, after step slo, the adjusting method of the video frame rate also includes：
When the frame per second of the currently playing video is less than the preset frame rate, according to the ratio value of the gray pixels point
The frame per second of the corresponding adjustment factor increase caching picture frame；
The caching picture frame is shown according to the frame per second after increase, and is sent according to the frame per second to the 3D glasses
Frequency change directive, so that the 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received
Rate.
When detecting currently playing frame per second less than preset frame rate, currently playing frame per second is come for next frame buffer picture frame
Say smaller, the gray pixels point ratio of next frame buffer picture frame is smaller, can be played with higher frame per second, when still to adjust
When relatively low frame per second after section is played, the fluency of picture can be influenceed, at this time, it may be necessary to which frame per second is increased, is delayed with adapting to next frame
The switching of picture frame is deposited, while the frame per second after with increase switches next frame buffer picture frame, to 3D glasses transmission frequency more
Change instruction, so that 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received.
When currently playing frame per second is equal to preset frame rate, illustrate that current play frame rate is applied to next frame buffer
Picture frame broadcasting, without adjusting frame per second.
The method that the present embodiment is proposed is not limited on intelligent television play 3D programs, when user gets 3D film sources
When being played afterwards on the mobile terminals such as computer, the regulation of frame per second can be equally carried out by this method, to reduce the work(of 3D glasses
Consumption.
The adjusting method for the video frame rate that the present embodiment is proposed, while intelligent television plays current video, reads slow
Picture frame is deposited, and the pixel value of the caching picture frame is analyzed, the ratio of the gray pixels point in the caching picture frame is obtained
Example value, ratio value one preset frame rate of correspondence of each gray pixels point, the frame per second of currently playing video is more than the caching picture frame
In gray pixels point ratio value corresponding preset frame rate when, reduce the frame for caching picture frame according to default adjustment factor
Rate, and according to the frame per second switching caching picture frame after reduction, instruct, cut so that 3D glasses enter line frequency while being sent to 3D glasses
Change, reduce the frequency of 3D glasses, and then reduce the power consumption of 3D glasses to reduce the power consumption rate of glasses.
Shown in reference picture 2, the second embodiment of the adjusting method of video frame rate of the present invention is proposed based on first embodiment.
In the present embodiment, step S20 includes following refinement step：
Step S21, when the frame per second of the broadcasting video is more than preset frame rate, according to the ratio pair of the gray pixels point
The caching picture frame carries out gamma correction, and stores the caching picture after gamma correction in default memory space
Frame；
Step S22, the institute after gamma correction is reduced according to the corresponding adjustment factor of the ratio of the gray pixels point
State the frame per second of caching picture frame.
When the frame per second of the broadcasting video is more than preset frame rate, illustrate the gray value of next frame buffer picture frame relative to
Currently playing picture frame is higher or scene is than dark, and gamma correction is carried out to the caching picture frame for carrying out frame per second reduction,
To adjust the contrast of the picture frame, when carrying out gamma correction, gamma is determined still according to the ratio shared by gray pixels point
Certain linear relationship is set between the ratio and gamma correction coefficient of the size of correction coefficient, such as gray pixels point, or
Certain gamma correction coefficient is set, as long as the ratio of gray pixels point is more than preset ratio value, just according to the gamma correction system
Number carries out gamma correction, it is preferable that gamma correction coefficient is between 1.0-2.4.Pass through gamma in default memory space storage
Caching picture frame after correction, the memory space can be that the storage that the memory space of TV acquiescence or user pre-set is empty
Between.
Step S30 includes：The caching picture frame after gamma correction is shown according to the frame per second after reduction, and
According to the frame per second to the 3D glasses transmission frequency change directive, for the 3D glasses according to the frequency received more
Change the switching at runtime frequency of instruction modification eyeglass.
The caching picture frame after gamma correction has been carried out according to the frame per second switching after reduction, and to 3D glasses transmission frequency more
Change instruction, herein with reference to above-mentioned first embodiment, will not be repeated here.
The method that the present embodiment is proposed according to the ratio of gray pixels point while frame rate adjustment is carried out, according to grey picture
The ratio of vegetarian refreshments carries out gamma correction to caching picture frame, to adjust the contrast of caching picture frame so that reduce frame per second
Caching picture frame can be seamlessly transitted when playing, and be that user brings more preferable visual effect.
Shown in reference picture 3, the 3rd embodiment of the adjusting method of video frame rate of the present invention is proposed based on first embodiment.
In the present embodiment, step S10 includes following refinement step：
Step S11, obtains the pixel value of each pixel in next frame buffer picture frame of currently playing picture frame；
The ratio value of gray pixels point in step S12, each pixel according to the calculated for pixel values of each pixel.
In the present embodiment, RGB (red, green, blue) pixel value of each pixel in caching picture frame, such as caching are obtained
The size of picture frame is X_Leth=1920, Y_Leth=1080, illustrates that the picture frame has 1920 row pixels, each to show
1080 pixels, the rgb pixel value of these pixels is arranged according to horizontal direction and vertical direction successively, sentenced one by one
Disconnected, when R, G, B pixel value of the pixel are identical, it is gray pixels point to illustrate the point, for example, detect the 1st picture of the 2nd row
R, G, B pixel value R1GAIN=178, G1GAIN=178, the B1GAIN=178 of vegetarian refreshments, judge the pixel for gray pixels
Point.Calculate the sum of these gray pixels points and then calculate its shared ratio in whole pixels.In other embodiments
In, often capable gray pixels point ratio value can be first calculated, and then calculate the ratio value of whole gray pixels points.
The ratio cut partition of gray pixels point is three intervals by the present embodiment：0-1/3,1/3-2/3,2/3-1.When grey picture
When the ratio of vegetarian refreshments is more than 1/3, reduce the frame per second of the caching picture frame according to default adjustment factor；When gray pixels point ratio
Example is located at 1/3-2/3 intervals, and frame per second is reduced according to 2/3 adjustment factor, when gray pixels point ratio is interval positioned at 2/3-1, presses
Reduce frame per second according to 1/3 adjustment factor.
Shown in reference picture 4, the fourth embodiment of the adjusting method of video frame rate of the present invention is proposed based on second embodiment.
In the present embodiment, step S21 includes following refinement step：
Step S211, according to the corresponding pass between default gamma correction coefficient and the ratio value of the gray pixels point
System, obtains gamma correction coefficient corresponding with the ratio value of the gray pixels point；
Step S212, enters edlin, with reality according to the gamma correction coefficient to the gamma curve of the caching picture frame
Now to the gamma correction of the caching picture frame.
The present embodiment still using cache picture frame size as X_Leth=1920, said exemplified by Y_Leth=1080
It is bright, the ratio value of gray pixels point is divided into three intervals：0-1/3,1/3-2/3,2/3-1.When the ratio of gray pixels point
When value is less than 1/3, gamma correction coefficient is 1, i.e., the contrast of caching picture frame is not adjusted, when gray pixels point ratio value is located at
1/3-2/3 is interval, and selection gamma correction coefficient is 1.4, when gray pixels point ratio value is located at 2/3-1 intervals, selection gamma school
Positive coefficient is 2.5, in other embodiments, and gamma correction is carried out in order to more accurate, can set four or four with
On gray pixels point ratio value interval, and corresponding gamma correction coefficient is set to be each interval, to cause after correction
Picture frame there is suitable contrast, be that user brings more preferable visual effect.
The method that the present embodiment is proposed is according to default corresponding pass between gamma correction coefficient and the pixel ratio of grey
System, carries out gamma correction to caching picture frame according to the ratio value of gray pixels point, improves the contrast of caching picture frame, be slow
Deposit picture frame color linking in switching more smooth, user is obtained good viewing experience.
The present invention also proposes a kind of adjusting means of video frame rate.
It is the high-level schematic functional block diagram of the adjusting means first embodiment of video frame rate of the present invention shown in reference picture 5.
In this embodiment, the adjusting means of the video frame rate includes：
Ratio acquisition module 10, for detecting the frame per second of currently playing video, and obtains the next of currently playing picture frame
The ratio value of gray pixels point in frame buffer picture frame, ratio value one preset frame rate of correspondence of each gray pixels point.
Watched when playing 3D TV programme on intelligent television, it is necessary to wear 3D glasses, existing intelligent television
It when playing 3D TV programme, can typically be played with relatively higher frame per second, to increase the fluency of video playback, play video
When the current frame, television system can cache the picture frame that next frame will be played in buffer zone.When the frame picture in 3D videos
The ratio that gray pixels point is accounted for than it is larger when, it is seen that image sharpness than relatively low, even if image is seeing for grey in itself
Unclear scene, still with high frame per second in switching, therefore, it can reduce frame in the more frame switchings of these gray pixels points
Rate.It can think that the ratio value of each gray pixels point sets corresponding preset frame rate, can be by the ratio value of gray pixels point
One-to-one mapping relations are set between preset frame rate, and the ratio of gray pixels point is changing in the range of 0-1, works as ash
During the large percentage of colour vegetarian refreshments, less preset frame rate can be corresponded to, when the ratio of gray pixels point is smaller, can be corresponded to
Larger preset frame rate, in the present embodiment, when the ratio of gray pixels point is when in the range of 0-1/3, sets 120Hz frame
Rate, when the ratio of gray pixels point is when in the range of 1/3-2/3, sets 80Hz frame per second, when the ratio of gray pixels point exists
When in the range of 2/3-1,40Hz frame per second is set, in other real-time examples, other correspondence numerical value or numerical value can be set
It is interval.
In the present embodiment, ratio acquisition module 10 can be when receiving the instruction of video frame rate regulation, or detects
When television system commences play out 3D programs, or when detecting between television set and 3D glasses as connection status, detection is currently broadcast
The frame per second of video is put, and obtains the ratio value of gray pixels point in next frame buffer picture frame of currently playing picture frame, wherein,
Ratio value one preset frame rate of correspondence of each gray pixels point.
Frame rate adjustment module 20, for when the ratio of the gray pixels point is more than preset ratio value, according to the ash
The corresponding adjustment factor of ratio of colour vegetarian refreshments reduces the frame per second of the caching picture frame.
The ratio value that the frame per second of currently playing video is more than gray pixels point in next frame buffer picture frame is corresponding default
During frame per second, illustrate that the gray pixels point ratio of next frame buffer picture frame is higher, can be played out with relatively low frame per second, and work as
The play frame rate of preceding video is than larger for next frame buffer picture frame, and therefore, frame rate adjustment module 20 can be according to ash
The corresponding adjustment factor of ratio of colour vegetarian refreshments reduces frame per second, to adapt to the broadcasting of next frame buffer picture.
Video playback module 30, for showing the caching picture frame according to the frame per second after reduction, and according to described
Frame per second is to the 3D glasses transmission frequency change directive, so that the 3D glasses are repaiied according to the frequency change directive received
Change the switching at runtime frequency of eyeglass.
When frame rate adjustment module 20 reduces the frame per second for caching picture frame according to the ratio of gray pixels point, in the present embodiment
In, the ratio value that gray pixels point is accounted for into all pixels point is divided into multiple different intervals, is that different interval settings is different
Adjustment factor, for example, currently playing frame per second be 120Hz, when gray-scale pixels ratio value be more than 33% be less than 60% when, regulation system
Corresponding number is 2/3, and now frame rate adjustment is 120Hz*2/3=80Hz, and video playback module 30 switches according to 80Hz frame per second
Cache picture frame；In other examples, it can set certain when gray pixels point ratio value is more than default ratio value
Adjustment factor, according to the secured adjusted coefficient adjustment cache picture frame frame per second, in the present embodiment, appropriate setting to adjust
Coefficient is saved, it is to avoid the frame per second after regulation is too small, because the minimum frame per second that human eye can be differentiated is 24, if frame per second is decreased to
It is too small, picture transition can be caused discontinuous, influence user normally watches TV programme.
Video playback module 30 is while the frame per second switching caching picture frame after with reduction, to 3D glasses transmission frequency more
Change instruction, 3D glasses are received after the instruction, itself and video are made according to the switching at runtime frequency of the left and right eyeglass of above-mentioned instruction modification
Play frame rate it is synchronous, to reduce the power consumption of 3D glasses.
Further, frame rate adjustment module 20, is additionally operable to when the frame per second of the currently playing video is less than the default frame
During rate, according to the frame per second of the corresponding adjustment factor increase caching picture frame of the ratio value of the gray pixels point；
Video playback module 30, is additionally operable to show the caching picture frame according to the frame per second after increase, and according to institute
Frame per second is stated to the 3D glasses transmission frequency change directive, so that the 3D glasses are according to the frequency change directive received
Change the switching at runtime frequency of eyeglass.
When frame rate adjustment module 20 detects currently playing frame per second less than preset frame rate, currently playing frame per second is for next
Smaller for frame buffer picture frame, the gray pixels point ratio of next frame buffer picture frame is smaller, can be with higher frame per second
Play, when still being played with the relatively low frame per second after regulation, the fluency of picture can be influenceed, at this time, it may be necessary to frame per second is increased,
To adapt to the switching of next frame buffer picture frame, next frame buffer picture is switched with the frame per second after increase in video playback module 30
While frame, to 3D glasses transmission frequency change directives, so that 3D glasses change eyeglass according to the frequency change directive received
Switching at runtime frequency.
When currently playing frame per second is equal to preset frame rate, illustrate that current play frame rate is applied to next frame buffer
Picture frame broadcasting, without adjusting frame per second.
The device that the present embodiment is proposed is not limited on intelligent television play 3D programs, when user gets 3D film sources
When being played afterwards on the mobile terminals such as computer, the regulation of frame per second can be equally carried out by the device, to reduce the work(of 3D glasses
Consumption.
The adjusting means for the video frame rate that the present embodiment is proposed, while intelligent television plays current video, reads slow
Picture frame is deposited, and the pixel value of the caching picture frame is analyzed, the ratio of the gray pixels point in the caching picture frame is obtained
Example value, ratio value one preset frame rate of correspondence of each gray pixels point, the frame per second of currently playing video is more than the caching picture frame
In gray pixels point ratio value corresponding preset frame rate when, reduce the frame for caching picture frame according to default adjustment factor
Rate, and according to the frame per second switching caching picture frame after reduction, instruct, cut so that 3D glasses enter line frequency while being sent to 3D glasses
Change, reduce the frequency of 3D glasses, and then reduce the power consumption of 3D glasses to reduce the power consumption rate of glasses.
Shown in reference picture 6, the second embodiment of the adjusting means of video frame rate of the present invention is proposed based on first embodiment.
In the present embodiment, frame rate adjustment module 20 is included with lower unit：
Gammate 21, when the frame per second of the broadcasting video is more than preset frame rate, according to the gray pixels point
Ratio to it is described caching picture frame carry out gamma correction, and default memory space storage after gamma correction described in
Cache picture frame.
When the frame per second of the broadcasting video is more than preset frame rate, illustrate the gray value of next frame buffer picture frame relative to
Currently playing picture frame is higher or scene is than dark, and gamma correction is carried out to the caching picture frame for carrying out frame per second reduction,
To adjust the contrast of the picture frame, when gammate 21 carries out gamma correction, still according to shared by gray pixels point
Ratio determine the size of gamma correction coefficient, such as set certain between the ratio and gamma correction coefficient of gray pixels point
Linear relationship, or certain gamma correction coefficient is set, as long as the ratio of gray pixels point is more than preset ratio value, gamma school
Positive unit 21 just carries out gamma correction according to the gamma correction coefficient, it is preferable that gamma correction coefficient is between 1.0-2.4.
Default memory space stores the caching picture frame after gamma correction, and the memory space can be that the storage of TV acquiescence is empty
Between or the memory space that pre-sets of user.
Frame rate adjustment unit 22, reduces for the corresponding adjustment factor of ratio according to the gray pixels point and passes through gamma
The frame per second of the caching picture frame after correction.
Video playback module 30, is additionally operable to show the caching after gamma correction according to the frame per second after reduction
Picture frame.
Video playback module 30 has carried out the caching picture frame after gamma correction according to the frame per second switching after reduction, and to 3D
Glasses transmission frequency change directive, herein with reference to above-mentioned first embodiment, will not be repeated here.
The device that the present embodiment is proposed according to the ratio of gray pixels point while frame rate adjustment is carried out, according to grey picture
The ratio of vegetarian refreshments carries out gamma correction to caching picture frame, to adjust the contrast of caching picture frame so that reduce frame per second
Caching picture frame can be seamlessly transitted when playing, and be that user brings more preferable visual effect.
Shown in reference picture 7, the 3rd embodiment of the adjusting means of video frame rate of the present invention is proposed based on first embodiment.
In the present embodiment, ratio acquisition module 10 is included with lower unit：
Each pixel in pixel acquisition unit 11, next frame buffer picture frame for obtaining currently playing picture frame
Pixel value；
Ratio computing unit 12, for gray pixels in each pixel described in the calculated for pixel values according to each pixel
The ratio value of point.
In the present embodiment, RGB (red, green, blue) pixel value of each pixel in caching picture frame, such as caching are obtained
The size of picture frame is X_Leth=1920, Y_Leth=1080, illustrates that the picture frame has 1920 row pixels, each to show
1080 pixels, pixel acquisition unit 21 is by the rgb pixel value of these pixels successively according to horizontal direction and vertical direction
Arrangement, is judged one by one, when R, G, B pixel value of the pixel are identical, and it is gray pixels point to illustrate the point, for example, detect
To R, G, B the pixel value R1GAIN=178, G1GAIN=178, B1GAIN=178 of the 1st pixel of the 2nd row, the pixel is judged
Point is gray pixels point.Ratio computing unit 22 calculates the sum of these gray pixels points and then calculates it in whole pixels
Shared ratio.In other examples, often capable gray pixels point ratio value can be first calculated, and then calculates whole ashes
The ratio value of colour vegetarian refreshments.
The ratio cut partition of gray pixels point is three intervals by the present embodiment：0-1/3,1/3-2/3,2/3-1.When grey picture
When the ratio of vegetarian refreshments is more than 1/3, reduce the frame per second of the caching picture frame according to default adjustment factor；When gray pixels point ratio
Example is located at 1/3-2/3 intervals, and frame per second is reduced according to 2/3 adjustment factor, when gray pixels point ratio is interval positioned at 2/3-1, presses
Reduce frame per second according to 1/3 adjustment factor.
Shown in reference picture 8, the fourth embodiment of the adjusting means of video frame rate of the present invention is proposed based on second embodiment.
In the present embodiment, gammate 21 includes following subelement：
Coefficient obtains subelement 211, for the ratio value according to default gamma correction coefficient and the gray pixels point
Between corresponding relation, obtain corresponding with the ratio value of gray pixels point gamma correction coefficient；
Gamma correction subelement 212, for according to gamma curve of the gamma correction coefficient to the caching picture frame
Enter edlin, to realize the gamma correction to the caching picture frame.
The present embodiment still using cache picture frame size as X_Leth=1920, said exemplified by Y_Leth=1080
It is bright, the ratio value of gray pixels point is divided into three intervals：0-1/3,1/3-2/3,2/3-1.When the ratio of gray pixels point
When value is less than 1/3, gamma correction coefficient is 1, i.e., the contrast of caching picture frame is not adjusted, when gray pixels point ratio value is located at
1/3-2/3 is interval, and it is 1.4 that coefficient, which obtains the selection gamma correction coefficient of subelement 211, when gray pixels point ratio value is located at 2/3-
1 is interval, and it is 2.5 that coefficient, which obtains the selection gamma correction coefficient of subelement 211, in other embodiments, in order to which gamma correction is single
Member 212 is more accurate to carry out gamma correction, can set the interval of the gray pixels point ratio value of four or more than four,
And corresponding gamma correction coefficient is set for each interval, to cause the picture frame after correction that there is suitable contrast, is
User brings more preferable visual effect.
The device that the present embodiment is proposed is according to default corresponding pass between gamma correction coefficient and the pixel ratio of grey
System, carries out gamma correction to caching picture frame according to the ratio value of gray pixels point, improves the contrast of caching picture frame, be slow
Deposit picture frame color linking in switching more smooth, user is obtained good viewing experience.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of adjusting method of video frame rate, it is applied in intelligent television and the 3D glasses supporting with intelligent television, its
It is characterised by, the adjusting method of the video frame rate includes：
The frame per second of currently playing video is detected, and obtains each pixel in next frame buffer picture frame of currently playing picture frame
Pixel value；According to the pixel value of each pixel, determine the gray pixels point in the caching picture frame and calculate described each
The ratio value of gray pixels point in individual pixel, ratio value one preset frame rate of correspondence of each gray pixels point；
When the frame per second of the currently playing video is more than the preset frame rate, according to the ratio value of gray pixels point correspondence
Adjustment factor reduce it is described caching picture frame frame per second；
The caching picture frame is shown according to the frame per second after reduction, and according to the frame per second to the 3D glasses transmission frequency
Change directive, so that the 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received.
2. the adjusting method of video frame rate according to claim 1, the frame per second of the currently playing video of detection, and obtain
The ratio value of gray pixels point in next frame buffer picture frame of currently playing picture frame, the ratio value pair of each gray pixels point
After the step of answering a preset frame rate, the adjusting method of the video frame rate also includes：
When the frame per second of the currently playing video is less than the preset frame rate, according to the ratio value of gray pixels point correspondence
Adjustment factor increase it is described caching picture frame frame per second；
The caching picture frame is shown according to the frame per second after increase, and according to the frame per second to the 3D glasses transmission frequency
Change directive, so that the 3D glasses change the switching at runtime frequency of eyeglass according to the frequency change directive received.
3. the adjusting method of video frame rate according to claim 1, it is characterised in that described when the frame of the broadcasting video
When rate is more than preset frame rate, the caching picture frame is reduced according to the corresponding adjustment factor of the ratio value of the gray pixels point
The step of frame per second, includes：
When the frame per second of the broadcasting video is more than preset frame rate, the caching is schemed according to the ratio value of the gray pixels point
Piece frame carries out gamma correction, and stores the caching picture frame after gamma correction in default memory space；
The caching picture frame after gamma correction is reduced according to the corresponding adjustment factor of the ratio of the gray pixels point
Frame per second；
The step of frame per second according to after reduction shows the caching picture frame includes：
The caching picture frame after gamma correction is shown according to the frame per second after reduction.
4. the adjusting method of video frame rate according to claim 3, it is characterised in that described according to the gray pixels point
Ratio value to it is described caching picture frame carry out gamma correction the step of include：
According to the corresponding relation between the ratio value of default gamma correction coefficient and gray pixels point, obtain and the ash
The corresponding gamma correction coefficient of ratio value of colour vegetarian refreshments；
Edlin is entered to the gamma curve of the caching picture frame according to the gamma correction coefficient, to realize to the caching figure
The gamma correction of piece frame.
5. a kind of adjusting means of video frame rate, it is applied in intelligent television and the 3D glasses supporting with intelligent television, its
It is characterised by, the adjusting means of the video frame rate includes：
Ratio acquisition module, for detecting the frame per second of currently playing video, and obtains next frame buffer of currently playing picture frame
The ratio value of gray pixels point in picture frame, ratio value one preset frame rate of correspondence of each gray pixels point；
Wherein, the ratio acquisition module includes：
Pixel acquisition unit, the pixel value of each pixel for obtaining the caching picture frame；
Ratio computing unit, for the pixel value according to each pixel, determines the gray pixels point in the caching picture frame
And calculate the ratio value of gray pixels point in each described pixel；
Frame rate adjustment module, for when the frame per second of the currently playing video is more than the preset frame rate, according to the grey
The corresponding adjustment factor of ratio value of pixel reduces the frame per second of the caching picture frame；
Video playback module, for showing the caching picture frame according to the frame per second after reduction, and according to the frame per second to
The 3D glasses transmission frequency change directive, so that the 3D glasses change eyeglass according to the frequency change directive received
Switching at runtime frequency.
6. the adjusting means of video frame rate according to claim 5, it is characterised in that the frame rate adjustment module, is also used
It is corresponding according to the ratio value of the gray pixels point in when the frame per second of the currently playing video is less than the preset frame rate
The frame per second of the adjustment factor increase caching picture frame；
The video playback module, is additionally operable to show the caching picture frame according to the frame per second after increase, and according to described
Frame per second is to the 3D glasses transmission frequency change directive, so that the 3D glasses are repaiied according to the frequency change directive received
Change the switching at runtime frequency of eyeglass.
7. the adjusting means of video frame rate according to claim 5, it is characterised in that the frame rate adjustment module includes：
Gammate, for when the frame per second of the broadcasting video is more than preset frame rate, according to the gray pixels point
Ratio value to it is described caching picture frame carry out gamma correction, and default memory space storage after gamma correction described in
Cache picture frame；
Frame rate adjustment unit, reduces after gamma correction for the corresponding adjustment factor of ratio according to the gray pixels point
The caching picture frame frame per second；
The video playback module, is additionally operable to show the caching figure after gamma correction according to the frame per second after reduction
Piece frame.
8. the adjusting means of video frame rate according to claim 7, it is characterised in that the gammate includes：
Coefficient obtains subelement, for pair between the ratio value according to default gamma correction coefficient and gray pixels point
It should be related to, obtain gamma correction coefficient corresponding with the ratio value of the gray pixels point；
Gamma correction subelement, for being compiled according to the gamma correction coefficient to the gamma curve of the caching picture frame
Volume, to realize the gamma correction to the caching picture frame.
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| CN201510568166.8A CN105141943B (en) | 2015-09-08 | 2015-09-08 | The adjusting method and device of video frame rate |
| PCT/CN2016/084108 WO2017041537A1 (en) | 2015-09-08 | 2016-05-31 | Video frame rate adjustment method and apparatus |
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| CN105141943B (en) * | 2015-09-08 | 2017-11-03 | 深圳Tcl数字技术有限公司 | The adjusting method and device of video frame rate |
| CN106028059B (en) * | 2016-05-24 | 2020-01-14 | 深圳Tcl数字技术有限公司 | Method and device for controlling video frame rate of smart television |
| CN106373516B (en) * | 2016-10-31 | 2019-08-13 | 北京集创北方科技股份有限公司 | LED display and its driving method |
| CN106657681B (en) | 2017-03-10 | 2019-07-05 | Oppo广东移动通信有限公司 | A kind of control method, device and the mobile terminal of mobile terminal refresh rate |
| CN110728964B (en) * | 2019-10-25 | 2021-03-02 | 京东方科技集团股份有限公司 | Display frequency adjusting method and device, driving circuit and display device |
| CN112672149B (en) * | 2020-12-15 | 2022-10-11 | 广州博冠信息科技有限公司 | Video processing method and device, storage medium and server |
| CN113347487B (en) * | 2021-06-17 | 2022-09-27 | 微微科技有限公司 | Low-power browser sequence diagram video method and terminal for automatic compatible equipment |
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