CN105141870A - Television signal processing method and television signal processing device - Google Patents
Television signal processing method and television signal processing device Download PDFInfo
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Abstract
The invention discloses a television signal processing method. The television signal processing method comprises the following steps: extracting characteristic parameter information of an HDMI (High-Definition Multimedia Interface) signal when a television receives the HDMI signal, and determining a signal source of the HDMI signal according to the extracted characteristic parameter information; and processing the HDMI signal according to a processing manner corresponding to the signal source so as to display the processed HDMI signal. The invention further discloses a television signal processing device. The signal source can be automatically determined according to the extracted characteristic parameter information after the television receives the HDMI signal; the received signal is displayed after being processed according to the pre-set processing manner corresponding to the signal source; and thus, the picture display effect is effectively improved.
Description
Technical field
The present invention relates to technical field of television sets, particularly relate to a kind of TV signal processing method and device.
Background technology
Traditional PC is generally by VGA (VideoGraphicsArray, Video Graphics Array) interface is connected with television set, PC to television set outputting VGA signal, in order to highlight the definition of picture, the direct output display of VGA signal that television set generally will receive.
Be connected with television set by AV interface or YUV interface traditional video disc or playing audio/video (as DVD, DiskPlayer etc.), and export AV signal or YUV signal to television set, television set, in order to adapt to the AV signal that receives or dynamic menu corresponding to YUV signal, carries out output display after generally carrying out noise reduction process, contrast and the picture process such as color compensating process or non-100% fidelity factor to the AV signal received or YUV signal again.
Along with widely using of HDMI (HighDefinitionMultimediaInterface, HDMI (High Definition Multimedia Interface)) interface, increasing PC and playing audio/video use HDMI to be connected with television set.In prior art, television set is after receiving signal by HDMI, the signal no matter received is from PC or playing audio/video, and the mode all adopting same to preset shows, and the mode preset shows after being generally directly display or picture process again.If the display mode that television set is preset be directly show, then, when the signal received by HDMI at television set is from playing audio/video, television set still directly shows the signal received, thus the image quality of display can be caused poor; If the display mode that television set is preset is show after picture process again, when the signal then received by HDMI at television set is from PC, television set shows after still carrying out picture process to the received signal again, thus the definition of picture can be caused lower.The defect of prior art is, television set is after receiving the signal of HDMI, the mode can only preset with same show, and can not determine that the display mode of mating with information source shows, thus cause that image quality is poor or image sharpness is lower according to the source of signal.
Summary of the invention
Main purpose of the present invention is to provide a kind of TV signal processing method and device, be intended to solve after receiving the signal of HDMI, the mode can only preset with same shows, can not determine that the display mode of mating with information source shows according to the source of signal, thus cause the technical problem that image quality is poor or image sharpness is lower.
TV signal processing method provided by the invention comprises the following steps:
When television set receives HDMI signal, extract the characteristic parameter information of described HDMI signal, and determine the information source of described HDMI signal according to the characteristic parameter information extracted;
According to the processing mode corresponding with described information source, described HDMI signal is processed, to show described HDMI signal after treatment.
Preferably, described characteristic parameter information comprises resolution information and/or color space information.
Preferably, described when television set receives HDMI signal, extract the characteristic parameter information of described HDMI signal, and determine that the step of the information source of described HDMI signal comprises according to the characteristic parameter information extracted:
When television set receives HDMI signal, extract the resolution information of described HDMI signal;
Preset resolution information and information source corresponding relation in, search the described resolution information of extraction, and determine the information source of described HDMI signal according to the resolution information found;
When not finding the described resolution information of extraction, extract the color space information of described HDMI signal;
Preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the information source of described HDMI signal according to the color space information found.
Preferably, described preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the step of the information source of described HDMI signal according to the color space information found after, described TV signal processing method also comprises:
When not finding the described color space information of extraction, exporting and manually selecting information source information.
Preferably, describedly according to the processing mode corresponding with described information source, described HDMI signal to be processed, comprises with the step showing described HDMI signal after treatment:
When described information source is for presetting information source, in described HDMI signal, extract image information;
When the image information extracted is mated with pre-set image, directly show described HDMI signal;
When the image information extracted is not mated with pre-set image, according to the picture processing mode preset, described HDMI signal is processed, and display described HDMI signal after treatment.
In addition, video signal processing apparatus provided by the invention comprises:
Determination module, during for receiving HDMI signal at television set, extracts the characteristic parameter information of described HDMI signal, and determines the information source of described HDMI signal according to the characteristic parameter information extracted;
Processing module, for processing described HDMI signal according to the processing mode corresponding with described information source, to show described HDMI signal after treatment.
Preferably, described characteristic parameter information comprises resolution information and/or color space information.
Preferably, described determination module comprises:
First extraction unit, during for receiving HDMI signal at television set, extracts the resolution information of described HDMI signal;
First determining unit, in the corresponding relation of the resolution information preset and information source, searches the described resolution information of extraction, and determines the information source of described HDMI signal according to the resolution information found;
Second extraction unit, for when not finding the described resolution information of extraction, extracts the color space information of described HDMI signal;
Second determining unit, in the corresponding relation of the color space information preset and information source, searches the described color space information of extraction, and determines the information source of described HDMI signal according to the color space information found.
Preferably, described video signal processing apparatus also comprises output module, and described output module is used for when not finding the described color space information of extraction, exports and manually selects information source information.
Preferably, described processing module comprises:
3rd extraction unit, for when described information source is for presetting information source, extracts image information in described HDMI signal;
First processing unit, during for mating with pre-set image in the image information extracted, directly shows described HDMI signal;
Second processing unit, during for not mating with pre-set image in the image information extracted, processes described HDMI signal according to the picture processing mode preset, and display described HDMI signal after treatment.
TV signal processing method provided by the invention and device, during by receiving HDMI signal at television set, extract the characteristic parameter information of the signal received, determine the information source corresponding with described characteristic parameter information, and according to the processing mode corresponding with described information source, described HDMI signal is processed, with display described HDMI signal after treatment, after television set receives HDMI signal, can automatically according to the characteristic parameter information determination information source extracted, and show again after processing according to the default processing mode corresponding with this information source to the received signal, thus effectively improve picture display effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of TV signal processing method first embodiment of the present invention;
Fig. 2 is the refinement schematic flow sheet determining information source step in TV signal processing method second embodiment of the present invention;
Fig. 3 is the refinement schematic flow sheet carrying out treatment step in TV signal processing method of the present invention 3rd embodiment to the received signal;
Fig. 4 is the high-level schematic functional block diagram of video signal processing apparatus first embodiment of the present invention;
Fig. 5 is the refinement high-level schematic functional block diagram of determination module in video signal processing apparatus second embodiment of the present invention;
Fig. 6 is the refinement high-level schematic functional block diagram of processing module in video signal processing apparatus of the present invention 3rd embodiment.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of TV signal processing method, this TV signal processing method can be applied in television set.With reference to the schematic flow sheet that Fig. 1, Fig. 1 are TV signal processing method first embodiment of the present invention, the TV signal processing method that the present invention proposes comprises the following steps:
Step S10, when television set receives HDMI signal, extracts the characteristic parameter information of described HDMI signal, and determines the information source of described HDMI signal according to the characteristic parameter information extracted;
In the present embodiment, the HDMI signal that described TV signal processing method is particularly useful for television set is received by HDMI processes, and namely television set receives HDMI signal by HDMI.Information source can be the playing audio/videos such as computer, or DVD, DiskPlayer.Above-mentioned computer is connected with television set by HDMI with playing audio/video, and by HDMI to television receiver input signal.
Above-mentioned characteristic parameter information can be resolution information, or color space information, or comprises resolution information and color space information simultaneously.
Generally, television set, when receiving the signal from computer, does not need to carry out picture process, directly carries out showing the picture that can obtain comparatively high definition; Television set, when receiving the signal from playing audio/videos such as DVD, DiskPlayer, needs to carry out specific picture process, and then the signal of display after picture process, can obtain the video pictures that image quality is higher.Different information source characteristic of correspondence parameter informations is different, therefore, can determine corresponding information source by characteristic parameter information.
Preferably, can preset respectively and each information source characteristic of correspondence parameter information, when determining the information source corresponding with described characteristic parameter information, can preset characteristic parameter information in search the characteristic parameter information extracted, then using information source corresponding for the characteristic parameter information found as the information source determined.
Such as, for the signal that computer exports, its resolution is as shown in table 1, namely can export the signal of resolution as shown in table 1 under computer default situations.In addition, the color space of the signal of computer output is RGB.
Table 1
| VGA(640x 480) |
| SVGA(800x 600) |
| XGA(1024x 768) |
| WXGA(1280x768) |
| WXGA(1360x768) |
| SXGA(1280x 1024) |
| WUXGA(1920x 1200) |
For playing audio/videos such as DVD, DiskPlayer, its resolution is as shown in table 2, namely can export the signal of resolution as shown in table 2 under the playing audio/video default situations such as DVD, DiskPlayer.In addition, the color space of signal that the playing audio/video such as DVD, DiskPlayer exports is YUV.
Table 2
| 480i(60Hz)/576i(50Hz) |
| 480p(60Hz)/576p(50Hz) |
| 720p(60Hz)/720p(50Hz) |
| 1080i(60Hz)/1080i(50Hz) |
| 1080p(24/25/30/50/60Hz) |
| 2160p(24/25/30Hz) |
Therefore, when the characteristic parameter extracted is resolution, and when the resolution extracted is a kind of in above-mentioned table 1, then the information source determined is computer; When the resolution extracted is a kind of in above-mentioned table 2, then the information source determined is the playing audio/videos such as DVD, DiskPlayer.When the characteristic parameter extracted is color space, and when the color space extracted is RGB, then the information source determined is computer; When the color space extracted is YUV, then the information source determined is the playing audio/videos such as DVD, DiskPlayer.
Step S20, processes described HDMI signal according to the processing mode corresponding with described information source, to show described HDMI signal after treatment.
Default processing mode corresponding to above-mentioned information source can be arranged according to actual needs, directly can show upon receipt of the signals, show after also can carrying out picture process to the received signal again.
In the present embodiment, when the information source determined is the playing audio/videos such as DVD, DiskPlayer, due to generally, the signal exported by playing audio/videos such as DVD, DiskPlayer is the signal of the dynamic menus such as video, therefore showing after needing to carry out picture process, namely the default processing mode that the playing audio/video such as DVD, DiskPlayer is corresponding is default picture process operation, and the signal of display after picture process.When the information source determined is computer, generally, the signal that computer exports is tableaux, requires to have higher definition, does not therefore need to carry out picture process operation, directly carry out showing.In some cases, when seeing video as utilized computer, the signal that computer exports also may be dynamic menu, therefore, also can first utilize image processing method to judge signal that computer exports as tableaux or dynamic menu, when being judged as tableaux, then directly shows; When being judged as dynamic menu, then after first carrying out picture process operation, then show.
Above-mentioned picture process operation can adopt existing techniques in realizing.In the present embodiment, can in the following ways: such as can carry out noise reduction process to the HDMI signal received, can also compensate contrast, color, the convergent-divergent process etc. of reproduction ratio non-100% can also be carried out.
TV signal processing method provided by the invention, during by receiving HDMI signal at television set, extract the characteristic parameter information of the signal received, determine the information source corresponding with described characteristic parameter information, and according to the processing mode corresponding with described information source, described HDMI signal is processed, with display described HDMI signal after treatment, after television set receives HDMI signal, can automatically according to the characteristic parameter information determination information source extracted, and show again after processing according to the default processing mode corresponding with this information source to the received signal, thus effectively improve picture display effect.
Further, in order to further reliably and effectively determine information source, thus improve picture display effect further, based on the first embodiment of TV signal processing method of the present invention, the invention allows for the second embodiment of TV signal processing method, reference Fig. 2, Fig. 2 are the refinement schematic flow sheet determining information source step in TV signal processing method second embodiment of the present invention, and step S10 comprises:
Step S11, when television set receives HDMI signal, extracts the resolution information of described HDMI signal;
In the present embodiment, can carry out the picture samples of a frame to the HDMI signal received, the two field picture then obtained sampling extracts resolution information.
Step S12, preset resolution information and information source corresponding relation in, search the described resolution information of extraction, and determine the information source of described HDMI signal according to the resolution information found;
The corresponding relation of above-mentioned default resolution information and information source can for the resolution information table (as shown in table 1 or table 2) arranged each information source, or can also be such as the mapping table of information source and each resolution information.
Step S13, when not finding the described resolution information of extraction, extracts the color space information of described HDMI signal;
Above-mentioned color space information is colorspace.Color space information can be extracted by prior art.
Step S14, preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the information source of described HDMI signal according to the color space information found.
The corresponding relation of above-mentioned default color space information and information source can for the color space information table arranged each information source, or can also be such as the mapping table of information source and each color space information.Such as, the color space that computer is corresponding is the color space that the playing audio/video such as RGB, DVD, DiskPlayer is corresponding is YUV.
Preferably, in order to further reliably and effectively determine information source, thus improve picture display effect further, after step s 14, described TV signal processing method also comprises: when not finding the described color space information of extraction, exports and manually selects information source information.Such as, can on the display screen of television set output character information " current cannot determine information source, ask manual confirmation ", or output sound information, thus after user receives and manually selects information source information, manually can input information source.Such as, current information source is computer, and current computer inputs to television set is vision signal, television set can provide one to input the interface of information source for user, it is computer that user can input information source to television set based on this interface, signal form is video, to inform that the current needs of television set carry out picture process operation to the signal received; Be computer in current information source, and current computer to television set input be tableaux signal time, television set can provide one to input the interface of information source for user, it is computer that user can input information source to television set based on this interface, signal form is tableaux, to inform the signal that the current direct display of television set receives; When current information source is the playing audio/videos such as DVD, DiskPlayer, television set can provide one to input the interface of information source for user, it is the playing audio/videos such as DVD, DiskPlayer that user can input information source to television set based on this interface, to inform that the current needs of television set carry out picture process operation to the signal received.
It should be noted that the second embodiment of above-mentioned TV signal processing method can also replace with, when television reception is to HDMI signal, extract the color space information of described HDMI signal; Preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the information source of described HDMI signal according to the color space information found; When not finding the described color space information of extraction, extract the resolution information of described HDMI signal; Preset resolution information and information source corresponding relation in, search the described resolution information of extraction, and determine the information source of described HDMI signal according to the resolution information found.
Further, in order to improve picture display effect further, based on the first or second embodiment of TV signal processing method of the present invention, the invention allows for the 3rd embodiment of TV signal processing method, with reference to Fig. 3, Fig. 3 is the refinement schematic flow sheet carrying out treatment step in TV signal processing method of the present invention 3rd embodiment to the received signal, and step S20 comprises:
Step S21, when described information source is for presetting information source, extracts image information in described HDMI signal;
In the present embodiment, default information source can be computer.When the information source of the HDMI signal determining to receive is computer, can carry out the picture samples of a frame to the HDMI signal received, the two field picture then obtained sampling is as the image information extracted.
Due in the tableaux that computer exports, in most cases all can there is the beginning icon of desktop, and this starts the lower left corner that icon is generally positioned at tableaux, therefore, judge signal that computer exports be tableaux signal or dynamic video signal time, the image information of the predeterminable area of sampling in the two field picture that obtains can be intercepted, and using image information that truncated picture information is extracted in the above-mentioned signal received.Step S22, when the image information extracted is mated with pre-set image, directly shows described HDMI signal;
In the present embodiment, the desktop that pre-set image can comprise all systems corresponding starts icon, and such as, the desktop that can comprise WinXP, Win7, Win8, Window classical version, Vista and apple system corresponding starts icon.
Judge that the mode of image information and the pre-set image information matches extracted can be:
Mode one, hash algorithm is adopted to calculate the cryptographic Hash of the image information of extraction and the cryptographic Hash of pre-set image information respectively, when difference between the cryptographic Hash and the cryptographic Hash of arbitrary pre-set image information of the image information extracted is less than or equal to predetermined threshold value, then judge image information and the pre-set image information matches of extraction; When difference between the cryptographic Hash and the cryptographic Hash of all pre-set image information of the image information extracted all is greater than predetermined threshold value, then judge that the image information extracted is not mated with pre-set image information.
Particularly, the mode of the cryptographic Hash of computed image can adopt prior art.Such as, can first by built-in scaler by image scaling to be calculated to 8*8 size, then each pixel of image to be calculated is converted to grey decision-making by formula " 0.3*R+0.59*G+0.11*B ", calculate the average gray of all pixels (64 pixels) of image to be calculated, and the gray value of each pixel and described average gray are compared, when the gray value of certain pixel is more than or equal to mean value, be designated as 1, when the gray value of certain pixel is less than mean value, be designated as 0.Result 0 or 1 is formed cryptographic Hash (being a string binary code), the image information relatively extracted and the cryptographic Hash of pre-set image information, the quantity of such as, between the cryptographic Hash of the image information extracted and the cryptographic Hash of pre-set image information different figure places then can judge image information and the pre-set image information matches of extraction when being less than or equal to 10, then can judge that the image information extracted is not mated with pre-set image information when the quantity of figure places different between the cryptographic Hash and the cryptographic Hash of pre-set image information of the image information extracted is greater than 10;
Mode two, calculates the grey decision-making Y [A] of each pixel of the image information of extraction respectively, and pre-set image information grey decision-making Y [B], computing formula is: Y=0.3*R+0.59*G+0.11*B; Then the error between pixel corresponding to the image information of extraction and each position of pre-set image information is calculated respectively, e=|Y [A]-Y [B|/| (Y [A]+Y [B] |, calculate the mean value of error corresponding to all pixel positions again, when mean value is less than predetermined threshold value, then judge image information and the pre-set image information matches of extraction, otherwise can judge that the image information extracted is not mated with pre-set image information.
By above-mentioned matching process, when the image information extracted is mated with arbitrary pre-set image, then think and then directly show the signal received by the corresponding tableaux of the signal received.Extract image information all do not mate with all pre-set image time, then think receive signal correspondence dynamic menu (as vision signal).
Step S23, when the image information extracted is not mated with pre-set image, processes described HDMI signal according to the picture processing mode preset, and display described HDMI signal after treatment.
When the image information extracted all is not mated with all pre-set image, then think the corresponding dynamic menu (being vision signal) of the signal that receives, then according to the picture processing mode preset, described HDMI signal is processed, and display described HDMI signal after treatment.In the present embodiment, above-mentioned default picture processing mode with reference to above-described embodiment, can not repeat them here.
It should be noted that, in other embodiments, described default information source also can be other exportable polytype signals as the information source of tableaux and dynamic video picture, and corresponding different default information sources, its pre-set image is also different.
The present invention further provides a kind of video signal processing apparatus.
With reference to the high-level schematic functional block diagram that Fig. 4, Fig. 4 are video signal processing apparatus first embodiment of the present invention, video signal processing apparatus provided by the invention comprises:
Determination module 10, during for receiving HDMI signal at television set, extracts the characteristic parameter information of described HDMI signal, and determines the information source of described HDMI signal according to the characteristic parameter information extracted;
In the present embodiment, the signal that described video signal processing apparatus is particularly useful for television set is received by HDMI processes, and namely television set is by HDMI Received signal strength.Information source can be the playing audio/videos such as computer, or DVD, DiskPlayer.Above-mentioned computer is connected with television set by HDMI with playing audio/video, and by HDMI to television receiver input signal.
Above-mentioned characteristic parameter information can be resolution information, or color space information, or comprises resolution information and color space information simultaneously.
Generally, television set, when receiving the signal from computer, does not need to carry out picture process, directly carries out showing the picture that can obtain comparatively high definition; Television set, when receiving the signal from playing audio/videos such as DVD, DiskPlayer, needs to carry out specific picture process, then at the signal of display after picture process, can obtain the video pictures that image quality is higher.Different information source characteristic of correspondence parameter informations is different, therefore, can determine corresponding information source by characteristic parameter information.
Preferably, can preset respectively and each information source characteristic of correspondence parameter information, when determining the information source corresponding with described characteristic parameter information, can preset characteristic parameter information in search the characteristic parameter information extracted, then using information source corresponding for the characteristic parameter information found as the information source determined.
Such as, for the signal that computer exports, its resolution is as shown in table 1, namely can export the signal of resolution as shown in table 1 under computer default situations.In addition, the color space of the signal of computer output is RGB.
For playing audio/videos such as DVD, DiskPlayer, its resolution is as shown in table 2, namely can export the signal of resolution as shown in table 2 under the playing audio/video default situations such as DVD, DiskPlayer.In addition, the color space of signal that the playing audio/video such as DVD, DiskPlayer exports is YUV.
Therefore, when the characteristic parameter extracted is resolution, and when the resolution extracted is a kind of in above-mentioned table 1, then the information source determined is computer; When the resolution extracted is a kind of in above-mentioned table 2, then the information source determined is the playing audio/videos such as DVD, DiskPlayer.When the characteristic parameter extracted is color space, and when the color space extracted is RGB, then the information source determined is computer; When the color space extracted is YUV, then the information source determined is the playing audio/videos such as DVD, DiskPlayer.
Processing module 20, for processing described HDMI signal according to the processing mode corresponding with described information source, to show described HDMI signal after treatment.
Default processing mode corresponding to above-mentioned information source can be arranged according to actual needs, directly can show upon receipt of the signals, show after also can carrying out picture process to the received signal again.
In the present embodiment, when the information source determined is the playing audio/videos such as DVD, DiskPlayer, due to generally, the signal exported by playing audio/videos such as DVD, DiskPlayer is the signal of the dynamic menus such as video, therefore showing after needing to carry out picture process, namely the default processing mode that the playing audio/video such as DVD, DiskPlayer is corresponding is default picture process operation, and the signal of display after picture process.When the information source determined is computer, generally, the signal that computer exports is tableaux, requires to have higher definition, does not therefore need to carry out picture process operation, directly carry out showing.In some cases, when seeing video as utilized computer, the signal that computer exports also may be dynamic menu, therefore, also can first utilize image processing method to judge signal that computer exports as tableaux or dynamic menu, when being judged as tableaux, then directly shows; When being judged as dynamic menu, then after first carrying out picture process operation, then show.
Above-mentioned picture process operation can adopt existing techniques in realizing.In the present embodiment, can in the following ways: such as can carry out noise reduction process to the received signal, can also compensate contrast, color, the convergent-divergent process etc. of reproduction ratio non-100% can also be carried out.
Video signal processing apparatus provided by the invention, during by receiving HDMI signal at television set, extract the characteristic parameter information of the signal received, determine the information source corresponding with described characteristic parameter information, and according to the processing mode corresponding with described information source, described HDMI signal is processed, with display described HDMI signal after treatment, after television set receives HDMI signal, can automatically according to the characteristic parameter information determination information source extracted, and show again after processing according to the default processing mode corresponding with this information source to the received signal, thus effectively improve picture display effect.
Further, in order to further reliably and effectively determine information source, thus improve picture display effect further, based on the first embodiment of video signal processing apparatus of the present invention, the invention allows for the second embodiment of video signal processing apparatus, with reference to the refinement high-level schematic functional block diagram that Fig. 5, Fig. 5 are determination module in video signal processing apparatus second embodiment of the present invention, determination module 10 comprises:
First extraction unit 11, during for receiving HDMI signal at television set, extracts the resolution information of described HDMI signal;
In the present embodiment, can carry out the picture samples of a frame to the received signal, the two field picture then obtained sampling extracts resolution information.
First determining unit 12, in the corresponding relation of the resolution information preset and information source, searches the described resolution information of extraction, and determines the information source of described HDMI signal according to the resolution information found;
The corresponding relation of above-mentioned default resolution information and information source can for the resolution information table (as shown in table 1 or table 2) arranged each information source, or can also be such as the mapping table of information source and each resolution information.
Second extraction unit 13, for when not finding the described resolution information of extraction, extracts the color space information of described HDMI signal;
Above-mentioned color space information is colorspace.Color space information can be extracted by prior art.
Second determining unit 14, in the corresponding relation of the color space information preset and information source, searches the described color space information of extraction, and determines the information source of described HDMI signal according to the color space information found.
The corresponding relation of above-mentioned default color space information and information source can for the color space information table arranged each information source, or can also be such as the mapping table of information source and each color space information.Such as, the color space that computer is corresponding is the color space that the playing audio/video such as RGB, DVD, DiskPlayer is corresponding is YUV.
Preferably, in order to further reliably and effectively determine information source, thus improve picture display effect further, described video signal processing apparatus also comprises output module, described output module is used for when not finding the described color space information of extraction, exports and manually selects information source information.Such as, can on the display screen of television set output character information " current cannot determine information source, ask manual confirmation ", or output sound information, thus after user receives and manually selects information source information, manually can input information source.Such as, current information source is computer, and current computer inputs to television set is vision signal, television set can provide one to input the interface of information source for user, it is computer that user can input information source to television set based on this interface, signal form is video, to inform that the current needs of television set carry out picture process operation to the signal received; Be computer in current information source, and current computer to television set input be tableaux signal time, television set can provide one to input the interface of information source for user, it is computer that user can input information source to television set based on this interface, signal form is tableaux, to inform the signal that the current direct display of television set receives; When current information source is the playing audio/videos such as DVD, DiskPlayer, television set can provide one to input the interface of information source for user, it is the playing audio/videos such as DVD, DiskPlayer that user can input information source to television set based on this interface, to inform that the current needs of television set carry out picture process operation to the signal received.
It should be noted that the second embodiment of above-mentioned video signal processing apparatus can also replace with, the first extraction unit 11, when television reception is to HDMI signal, extracts the color space information of described HDMI signal; First determining unit 12 preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the information source of described HDMI signal according to the color space information found; Second extraction unit 13, when not finding the described color space information of extraction, extracts the resolution information of described HDMI signal; Second determining unit 14 preset resolution information and information source corresponding relation in, search the described resolution information of extraction, and determine the information source of described HDMI signal according to the resolution information found.
Further, in order to improve picture display effect further, based on the first or second embodiment of video signal processing apparatus of the present invention, the invention allows for the 3rd embodiment of video signal processing apparatus, with reference to Fig. 6, Fig. 6 is the refinement high-level schematic functional block diagram of processing module in video signal processing apparatus of the present invention 3rd embodiment, and described processing module 20 comprises:
3rd extraction unit 21, for when described information source is for presetting information source, extracts image information in described HDMI signal;
In the present embodiment, default information source can be computer.When the information source of the HDMI signal determining to receive is computer, can carry out the picture samples of a frame to the received signal, the two field picture then obtained sampling is as the image information extracted.
Due in the tableaux that computer exports, in most cases all can there is the beginning icon of desktop, and this starts the lower left corner that icon is generally positioned at tableaux, therefore, judge signal that computer exports be tableaux signal or dynamic video signal time, the image information of the predeterminable area of sampling in the two field picture that obtains can be intercepted, and using image information that truncated picture information is extracted in the above-mentioned signal received.
First processing unit 22, during for mating with pre-set image in the image information extracted, directly shows described HDMI signal;
In the present embodiment, the desktop that pre-set image can comprise all systems corresponding starts icon, and such as, the desktop that can comprise WinXP, Win7, Win8, Window classical version, Vista and apple system corresponding starts icon.
Judge that the mode of image information and the pre-set image information matches extracted can be:
Mode one, hash algorithm is adopted to calculate the cryptographic Hash of the image information of extraction and the cryptographic Hash of pre-set image information respectively, when the quantity of figure places different between the cryptographic Hash and the cryptographic Hash of arbitrary pre-set image information of the image information extracted is less than or equal to predetermined threshold value, then judge image information and the pre-set image information matches of extraction; When the quantity of figure places different between the cryptographic Hash and the cryptographic Hash of all pre-set image information of the image information extracted all is greater than predetermined threshold value, then judge that the image information extracted is not mated with pre-set image information.
Particularly, the mode of the cryptographic Hash of computed image can adopt prior art.Such as, can first by built-in scaler by image scaling to be calculated to 8*8 size, then each pixel of image to be calculated is converted to grey decision-making by formula " 0.3*R+0.59*G+0.11*B ", then the average gray of all pixels (64 pixels) of image to be calculated is calculated, and the gray value of each pixel and described average gray are compared, when the gray value of certain pixel is more than or equal to mean value, be designated as 1, when the gray value of certain pixel is less than mean value, be designated as 0.Result 0 or 1 is formed cryptographic Hash (being a string binary code), the image information relatively extracted and the cryptographic Hash of pre-set image information, the quantity of such as, between the cryptographic Hash of the image information extracted and the cryptographic Hash of pre-set image information different figure places then can judge image information and the pre-set image information matches of extraction when being less than or equal to 10, then can judge that the image information extracted is not mated with pre-set image information when the quantity of figure places different between the cryptographic Hash and the cryptographic Hash of pre-set image information of the image information extracted is greater than 10;
Mode two, calculates the grey decision-making Y [A] of each pixel of the image information of extraction respectively, and pre-set image information grey decision-making Y [B], computing formula is: Y=0.3*R+0.59*G+0.11*B; Then the error between pixel corresponding to the image information of extraction and each position of pre-set image information is calculated respectively, e=|Y [A]-Y [B|/| (Y [A]+Y [B] |, calculate the mean value of error corresponding to all pixel positions again, when mean value is less than predetermined threshold value, then judge image information and the pre-set image information matches of extraction, otherwise can judge that the image information extracted is not mated with pre-set image information.
By above-mentioned matching process, when the image information extracted is mated with arbitrary pre-set image, then think and then directly show the signal received by the corresponding tableaux of the signal received.Extract image information all do not mate with all pre-set image time, then think receive signal correspondence dynamic menu (as vision signal).
Second processing unit 23, during for not mating with pre-set image in the image information extracted, processes described HDMI signal according to the picture processing mode preset, and display described HDMI signal after treatment.
When the image information extracted all is not mated with all pre-set image, then think the corresponding dynamic menu (being vision signal) of the signal that receives, then according to the picture processing mode preset, described HDMI signal is processed, and display described HDMI signal after treatment.In the present embodiment, above-mentioned default picture processing mode with reference to above-described embodiment, can not repeat them here.
It should be noted that, in other embodiments, described default information source also can be other exportable polytype signals as the information source of tableaux and dynamic video picture, and corresponding different default information sources, its pre-set image is also different.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a TV signal processing method, is characterized in that, described TV signal processing method comprises the following steps:
When television set receives HDMI signal, extract the characteristic parameter information of described HDMI signal, and determine the information source of described HDMI signal according to the characteristic parameter information extracted;
According to the processing mode corresponding with described information source, described HDMI signal is processed, to show described HDMI signal after treatment.
2. TV signal processing method as claimed in claim 1, it is characterized in that, described characteristic parameter information comprises resolution information and/or color space information.
3. TV signal processing method as claimed in claim 1, it is characterized in that, described when television set receives HDMI signal, extract the characteristic parameter information of described HDMI signal, and determine that the step of the information source of described HDMI signal comprises according to the characteristic parameter information extracted:
When television set receives HDMI signal, extract the resolution information of described HDMI signal;
Preset resolution information and information source corresponding relation in, search the described resolution information of extraction, and determine the information source of described HDMI signal according to the resolution information found;
When not finding the described resolution information of extraction, extract the color space information of described HDMI signal;
Preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the information source of described HDMI signal according to the color space information found.
4. TV signal processing method as claimed in claim 3, it is characterized in that, described preset color space information and information source corresponding relation in, search the described color space information of extraction, and determine the step of the information source of described HDMI signal according to the color space information found after, described TV signal processing method also comprises:
When not finding the described color space information of extraction, exporting and manually selecting information source information.
5. the TV signal processing method as described in any one of Claims 1-4, is characterized in that, describedly processes described HDMI signal according to the processing mode corresponding with described information source, comprises with the step showing described HDMI signal after treatment:
When described information source is for presetting information source, in described HDMI signal, extract image information;
When the image information extracted is mated with pre-set image, directly show described HDMI signal;
When the image information extracted is not mated with pre-set image, according to the picture processing mode preset, described HDMI signal is processed, and display described HDMI signal after treatment.
6. a video signal processing apparatus, is characterized in that, described video signal processing apparatus comprises:
Determination module, during for receiving HDMI signal at television set, extracts the characteristic parameter information of described HDMI signal, and determines the information source of described HDMI signal according to the characteristic parameter information extracted;
Processing module, for processing described HDMI signal according to the processing mode corresponding with described information source, to show described HDMI signal after treatment.
7. video signal processing apparatus as claimed in claim 6, it is characterized in that, described characteristic parameter information comprises resolution information and/or color space information.
8. video signal processing apparatus as claimed in claim 6, it is characterized in that, described determination module comprises:
First extraction unit, during for receiving HDMI signal at television set, extracts the resolution information of described HDMI signal;
First determining unit, in the corresponding relation of the resolution information preset and information source, searches the described resolution information of extraction, and determines the information source of described HDMI signal according to the resolution information found;
Second extraction unit, for when not finding the described resolution information of extraction, extracts the color space information of described HDMI signal;
Second determining unit, in the corresponding relation of the color space information preset and information source, searches the described color space information of extraction, and determines the information source of described HDMI signal according to the color space information found.
9. video signal processing apparatus as claimed in claim 8, it is characterized in that, described video signal processing apparatus also comprises output module, and described output module is used for when not finding the described color space information of extraction, exports and manually selects information source information.
10. the video signal processing apparatus as described in any one of claim 6 to 9, is characterized in that, described processing module comprises:
3rd extraction unit, for when described information source is for presetting information source, extracts image information in described HDMI signal;
First processing unit, during for mating with pre-set image in the image information extracted, directly shows described HDMI signal;
Second processing unit, during for not mating with pre-set image in the image information extracted, processes described HDMI signal according to the picture processing mode preset, and display described HDMI signal after treatment.
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