CN101086834A - A method for controlling display effect of caption and control device - Google Patents
A method for controlling display effect of caption and control device Download PDFInfo
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Abstract
The invention relates to an effective way controlling the caption display. It gets the decoded caption data from the buffer and changes the feature of the data to generate caption image represented in pixels and displayed by display equipment. Through the application of this invention, it can autonomously controlling the display effect of the caption.
Description
Technical field
The present invention relates to digital TV picture and represent the field, particularly relate to a kind of method and opertaing device of control word screen display effect.
Background technology
Compare with traditional analog television, the advantage of Digital Television maximum has powerful interactivity at it, makes user's may command viewing effect.
Captions have played very big booster action when the user watches program, but different users is not quite similar to the demand of captions.For example: the user who has defective vision may require font a little bigger, and the user who has wants captions are become the font of oneself liking, and the user who has wants captions are become the color of oneself liking.And content supplier can not provide a kind of captions for every user's correspondence.
In Digital Television, finally be presented on user's picture in front and be actually by four layers of overlapping synthetic result of picture.Referring to shown in Figure 1, described four layers of picture are respectively background layer, video layer, subtitle layer and image layer.The transport stream institute data carried by data that content supplier sends can be diverted in the corresponding layer according to data characteristic, and these four layers is an abstract concept, the storage unit of one section internal memory that performance is corresponding respectively in actual applications.
Wherein, described subtitle layer is used for carrying caption information.In the subtitle specification of digital video broadcasting DVB, captions transmit with textual form, carry the various information of captions in the described text, comprising: the color of font, the background color of captions.Though font size directly is not included in the caption information, but can be by adjusting the size in the shared zone of font, reach the purpose of adjusting font size, be that subtitle layer is divided into a plurality of square region, captions present in these square region, when the length of adjustment region and width, the subtitle font size of the inside also can change accordingly.Font type is stored in the object field the inside of caption information.Font color is stored in the CLUT table in the caption information, exists with foreground color, and the title back color also is stored in the CLUT table in the caption information, exists with background color.Each zone all can have specific CLUT table to interrelate with it.
In sum, in Digital Television DTV and network TV IPTV, captions all locate to be fixed display format in content supplier, comprising: font size, font color and font type at present.Content supplier only provides limited several captions in caption stream.
But user's demand is various, and several captions that content supplier provided can't satisfy user's demand; In addition, be enough to satisfy the captions kind of most user's requests if allow content supplier provide, then increased the workload of content supplier, and when the transmission caption stream, performance requirement for the network bandwidth, server and set-top box also can improve, and is difficult at present reach.
Summary of the invention
The invention provides a kind of method and opertaing device of control word screen display effect, the problem that can not meet consumers' demand in order to the captions kind that solves present content supplier and provide.
The inventive method comprises the following steps:
A, equipment obtain decoded caption data from its buffer memory;
B, revise the property value of the caption data that obtains according to the control signal received;
C, amended caption data is generated the captions image of representing with pixel, and show by display device.
Wherein, also comprise among the described step B: amended caption data is write in the buffer memory again.
Wherein, after described equipment is received control signal, carry out following judgement, to determine caption data attribute to be revised:
Judge whether indication modification font size;
Judge whether indication modification font color;
Judge whether indication modification title back color.
The identifier that the attribute of described caption data is corresponding different respectively.
Further, among the described step B,, be index then with the font size corresponding identifier if font size is made amendment, find the length value and the width value in the shared zone of font respectively, and revise described length value and width value according to the control signal of receiving.
If font size is made amendment, then judge the control signal indication enlarge font of receiving or decrease font size, and described length value of corresponding convergent-divergent and width value.
Further, among the described step B,, be index then with the font color corresponding identifier if font color is made amendment, find the color value of foreground object, and revise the color value of described foreground object according to the control signal of receiving.
Further, among the described step B,, be index then with title back color corresponding identifier if the title back color is made amendment, find the color value of background object, and revise the color value of described background object according to the control signal of receiving.
The property value of described caption data exceeds with default maximal value and/or minimum value.
Opertaing device of the present invention comprises:
Subscriber Interface Module SIM, the control signal that is used for receiving is converted to events corresponding information;
The caption data buffer memory is used for the decoded caption data of buffer memory;
Modular converter is used for caption data is generated the captions image of representing with pixel, and output;
Described opertaing device also comprises:
Subtitle control module is used for obtaining caption data from described caption data buffer memory, and revises the property value of the caption data that obtains according to the event information that described Subscriber Interface Module SIM is sent.
Wherein, described subtitle control module writes amended caption data in the caption data buffer memory again, in order to described modular converter conversion.
Wherein, comprise following submodule in the described subtitle control module:
Input processing module is used to judge that font size is revised in the event information indication that receives and/or color is revised in indication; The font size control module is used for when receiving the trigger pip of described input processing module, judges that described event information indication enlarge font or indication decrease font size; Font is amplified execution module, is used for when receiving the trigger pip of described font size control module enlarge font; Font is dwindled execution module, is used for decreasing font size when receiving the trigger pip of described font size control module; The color control module is used for when receiving the trigger pip of described input processing module, judges that font color is revised in described event information indication and/or the title back color is revised in indication; Font color is revised execution module, is used for when receiving the trigger pip of described color control module, revises font color; The title back color is revised execution module, is used for when receiving the trigger pip of described color control module, revises the title back color.
Further, it is index with the font size corresponding identifier that described font is amplified execution module, finds the length value and the width value in the shared zone of font respectively, and according to former Aspect Ratio relation, increases progressively described length value and width value.
Further, it is index with the font size corresponding identifier that described font is dwindled execution module, finds the length value and the width value in the shared zone of font respectively, and according to former Aspect Ratio relation, described length value and width value successively decrease.
Further, it is characterized in that it is index with the font color corresponding identifier that described font color is revised execution module, finds the color value of foreground object, and revise the color value of foreground object with one of default color value.
Further, it is characterized in that it is index with title back color corresponding identifier that described title back color is revised execution module, finds the color value of background object, and revise the color value of background object with one of default color value.
The property value of described caption data exceeds with default maximal value and/or minimum value.
Beneficial effect of the present invention is as follows:
The present invention does not directly change decoded caption data, and output to display device, but from its buffer memory, obtain decoded caption data, and revise the property value of the caption data obtain according to the control signal of receiving (sending) by the user, again write amended caption data in the buffer memory afterwards, again amended caption data is generated the captions image of representing with pixel, and show by display device.
Add the user in the inventive method flow process and sent control signal, to revise the step of caption data property value, and by obtaining caption data, revise property value, again write operations such as buffer memory, modification intention to the user is implemented, thereby realizes the display effect by user's Autonomous Control captions, and obviously the present invention can satisfy the demand of each user to the captions display effect.
In order to support the inventive method, the present invention also provides a kind of opertaing device, it comprises Subscriber Interface Module SIM, caption data buffer memory, modular converter in the existing set-top box, the present invention has also added subtitle control module, be used for obtaining caption data, and revise the property value of the caption data that obtains according to the event information that described Subscriber Interface Module SIM is sent from described caption data buffer memory.
Description of drawings
Fig. 1 is the digital TV picture structural representation;
Fig. 2 is an opertaing device structural representation of the present invention;
Fig. 3 is the inner structure synoptic diagram of the subtitle control module in the opertaing device of the present invention;
Fig. 4 is the inventive method flow chart of steps;
Fig. 5 is the inventive method example flow chart.
Embodiment
In order to satisfy the different demands of user to the captions display effect, make captions that hommization more is provided, the invention provides a kind of opertaing device, described opertaing device includes but not limited to set-top box, also can be other video access control equipments, referring to shown in Figure 2, it comprises: the Subscriber Interface Module SIM 2 that links to each other with user interaction device 1 by the UdUi interface, the subtitle control module 3 that links to each other with Subscriber Interface Module SIM 2 by the UiCm interface, the caption data buffer memory 4 that links to each other with subtitle control module 3 by the CmSb interface, by the modular converter 5 that the SbTm interface links to each other with caption data buffer memory 4, described modular converter 5 also links to each other with display device 6 by the TmDd interface.
Described user interaction device 1 comprises: keyboard, mouse, telepilot.The user transmits control signal to opertaing device of the present invention by these equipment.
Described Subscriber Interface Module SIM 2 is used to receive the control signal that the user sends by keyboard, mouse, telepilot, and the conversion of signals of receiving is become events corresponding information, passes to subtitle control module 3 by the mechanism of message or non-message and handles.
Described subtitle control module 3 is used to receive the event information that Subscriber Interface Module SIM 2 transmits, and event information is carried out more careful judgement, is divided into the variant font major issue, and the font color incident is revised in the variant font mishap, revises title back color incident.According to events corresponding, enable the sub-function module in the subtitle control module 3, the decoded caption data of reading and saving in caption data buffer memory 4 finds wherein and the corresponding attribute-identifier of described incident, and revises its value.Afterwards, this property value of the caption data of also in real time newly receiving with this value modification caption data buffer memory 4.
Described caption data buffer memory 4 is wherein deposited decoded caption data.Subtitle control module 3 can after making amendment, be stored in this buffer memory 4 from wherein reading caption data again.
Described modular converter 5 is used for converting dot matrix or vector fonts to font that pixel is represented according to the description of font file to font size, font color, title back color.
Described display device 6, the font of representing with pixel that is used for obtaining through modular converter 5 presents in the above.
Described UdUi interface can be different interfaces according to the difference of user interaction device 1.As: 2 of telepilot and Subscriber Interface Module SIMs pass through infrared communication.Keyboard, mouse can pass through PS/2 interface or USB interface and Subscriber Interface Module SIM 2 communications.
Described UiCm interface is used for the event information that sends to subtitle control module 3 transmission user interface modules 2.
Described CmSb interface, subtitle control module 3 is passed through this interface reading of data from caption data buffer memory 4, and amended value is write in the buffer memory 4 again by this interface.
Described SbTm interface is used for amended caption data is delivered to modular converter 5.
Described TmDd interface is used for the captions that pixel is represented are transferred to display device 6.
Referring to shown in Figure 3, comprise again in the above-mentioned subtitle control module 3: font size control module 302 that links to each other with input processing module 301 and color control module 303, the font that links to each other with font size control module 302 is amplified execution module 304 and font is dwindled execution module 305, and the font color that links to each other with color control module 303 is revised execution module 306 and the title back color is revised execution module 307.
Described input processing module 301 is used to judge that the event information that receives is the font size incident, or the color control event, and corresponding to font size control module 302 or color control module 303 transmission trigger pips.
Described font size control module 302 is used to receive the modification font size signal that input processing module 301 is sent, and judges that further this signal is an amplifying signal, still dwindles signal.Afterwards, correspondingly amplify execution module 304 or font to font and dwindle execution module 305 and send trigger pips.
Described color control module 303 is used to receive the modification color signal that input processing module 301 is sent, and judges that further this signal is to revise the font color signal, still revises the title back color signal.Afterwards, corresponding to font color modification execution module 306 or title back color modification execution module 307 transmission trigger pips.
Described font is amplified execution module 304, be used for after receiving the amplifying signal that font size control module 302 is sent, from caption data buffer memory 4, obtain caption data, and be index with font size corresponding identifier (identifier is region_width and region_height), find the length value and the width value in the shared zone of font respectively.Afterwards, judge whether the length value in the shared zone of present font and/or width value have reached default maximal value, if then return and wait for user's input state; Otherwise, according to former Aspect Ratio relation, increase progressively described length value and width value, perhaps directly import numerical value to be revised (annotate: the length range in zone is at 1～720 pixel at present, and width is at 1～576 pixel) by the user.Become big according to the shared zone of existing standard font, then the font in this zone is also can the phase strain big.
Described font is dwindled execution module 305, be used for receive that font size control module 302 sends dwindle signal after, from caption data buffer memory 4, obtain caption data, and be index with font size corresponding identifier (identifier is region_width and region_height), find the length value and the width value in the shared zone of font respectively.Afterwards, judge whether the length value in the shared zone of present font and/or width value have reached default minimum value, if then return and wait for user's input state; Otherwise according to former Aspect Ratio relation, successively decrease described length value and width value are perhaps directly imported numerical value to be revised (annotate: the length range in zone is at 1～720 pixel at present, and width is at 1～576 pixel) by the user.Diminish according to the shared zone of existing standard font, then the font in this zone also can correspondingly diminish.
Described font color is revised execution module 306, be used for after receiving the modification font color signal that color control module 303 is sent, from caption data buffer memory 4, obtain caption data, and be index with font color corresponding identifier (identifier is foreground_pixel_code), find the color value of foreground object, and revise the color value (can select) of foreground object with one of default color value by the user.
Described title back color is revised execution module 307 and is used for after receiving the modification title back color signal that color control module 303 is sent, from caption data buffer memory 4, obtain caption data, and be index with title back color corresponding identifier (identifier is blackground_pixel+code), find the color value of background object, and revise the color value (can select) of background object with one of default color value by the user.
Use above-mentioned opertaing device, the invention provides a kind of method of control word screen display effect,, comprise following key step referring to shown in Figure 4:
A, opertaing device are received control signal.
The user sends control signal by user interaction device such as telepilot, mouse or keyboards, after this control signal is received by the receiving trap on the set-top box STB, judge whether for subtitle control signal (deterministic process is a prior art), if then carry out subsequent step by STB.
B, from its buffer memory, obtain decoded caption data.
C, revise the property value of the caption data that obtains according to the control signal received.
D, amended caption data is write in the buffer memory again.
E, amended caption data is generated the captions image of representing with pixel, and show by display device.
Below above-mentioned 5 key steps are launched, and, describe the implementing procedure of the inventive method in detail in conjunction with the module in the opertaing device of the present invention, referring to shown in Figure 5, comprise following concrete steps:
S1, when the user starts STB, subtitle control module 3 starts thereupon, and enters user's input control signal state of waiting for.
S2, receive the control signal of user input when subtitle control module 3 after, this signal is transferred to input processing module 301 handles.
S3, input processing module 301 judge whether it is to revise the font size signal.If revise the font size signal, then forward step S4 to, if not revising the font size signal, then forward step S11 to.
S4, call font size control module 302.
S5, judge whether it is amplifying signal.If amplifying signal then forwards step S6 to, if not, then forward step S8 to.
S6, font are amplified execution module 304 and are judged whether the length and the width in zone have been maximum at present.If the length in zone and width are maximum at present, then forward step S1 to, if not maximum, then forward step S7 to.
The length in S7, zone and width increase a Board Lot by original proportionate relationship, and this value is acted on afterwards all captions.Return step S1 afterwards.
S8, judge whether it is the signal that decreases font size.If dwindle signal, then forward step S9 to, if not, then forward step S1 to.
S9, font are dwindled execution module 305 and are judged whether the length and the width in zone have been minimum at present.If the length in zone and width have been minimum at present, then forward step S1 to, if not minimum, then forward step S10 to.
The length in S10, zone and width reduce by a Board Lot according to original proportionate relationship, and this value is acted on all afterwards captions.Return step S1 afterwards.
S11, color control module 303 judge whether it is to revise the font color signal.If revise the font color signal, then forward step S12 to, if not revising the font color signal, then forward step S13 to.
S12, font color are revised the CLUT table that execution module 306 finds this captions correspondence, change a kind of foreground color combination, and this value is acted on all afterwards captions.Return step S1 afterwards.
S13, judge whether it is to revise the title back color signal.If revise the title back color signal, then forward step S14 to.If not, then forward step S1 to.
S14, title back color revise the CLUT table that execution module 307 finds this captions correspondence, change a kind of background color combination, and this value is acted on afterwards all captions, turn back to step S1.
Can transposition between the part determining step in above-mentioned flow process, for example: the order between step S11 and the step S13 can be exchanged, and the order between step S5 and the step S8 can be exchanged.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1, a kind of method of control word screen display effect is characterized in that, comprises the following steps:
A, equipment obtain decoded caption data from its buffer memory;
B, revise the property value of the caption data that obtains according to the control signal received;
C, amended caption data is generated the captions image of representing with pixel, and show by display device.
2, the method for claim 1 is characterized in that, also comprises among the described step B: amended caption data is write in the buffer memory again.
3, the method for claim 1 is characterized in that, after described equipment is received control signal, carries out following judgement, to determine caption data attribute to be revised:
Judge whether indication modification font size;
Judge whether indication modification font color;
Judge whether indication modification title back color.
4, method as claimed in claim 3 is characterized in that, the identifier that the attribute of described caption data is corresponding different respectively.
5, method as claimed in claim 4, it is characterized in that, among the described step B, if font size is made amendment, be index then with the font size corresponding identifier, find the length value and the width value in the shared zone of font respectively, and revise described length value and width value according to the control signal of receiving.
6, method as claimed in claim 5 is characterized in that, if font size is made amendment, then judge the control signal indication enlarge font of receiving or decrease font size, and described length value of corresponding convergent-divergent and width value.
7, method as claimed in claim 4 is characterized in that, among the described step B, if font color is made amendment, be index then, find the color value of foreground object, and revise the color value of described foreground object according to the control signal of receiving with the font color corresponding identifier.
8, method as claimed in claim 4 is characterized in that, among the described step B, if the title back color is made amendment, be index then, find the color value of background object, and revise the color value of described background object according to the control signal of receiving with title back color corresponding identifier.
As each described method of claim 1 to 8, it is characterized in that 9, the property value of described caption data exceeds with default maximal value and/or minimum value.
10, method as claimed in claim 9 is characterized in that, by the property value of user's input caption data to be revised; Perhaps select the property value group, and revise according to default property value by the user.
11, a kind of opertaing device comprises:
Subscriber Interface Module SIM, the control signal that is used for receiving is converted to events corresponding information;
The caption data buffer memory is used for the decoded caption data of buffer memory;
Modular converter is used for caption data is generated the captions image of representing with pixel, and output;
It is characterized in that described opertaing device also comprises:
Subtitle control module is used for obtaining caption data from described caption data buffer memory, and revises the property value of the caption data that obtains according to the event information that described Subscriber Interface Module SIM is sent.
12, equipment as claimed in claim 11 is characterized in that, described subtitle control module writes amended caption data in the caption data buffer memory again, in order to described modular converter conversion.
13, equipment as claimed in claim 11 is characterized in that, comprises following submodule in the described subtitle control module:
Input processing module is used to judge that font size is revised in the event information indication that receives and/or color is revised in indication;
The font size control module is used for when receiving the trigger pip of described input processing module, judges that described event information indication enlarge font or indication decrease font size;
Font is amplified execution module, is used for when receiving the trigger pip of described font size control module enlarge font;
Font is dwindled execution module, is used for decreasing font size when receiving the trigger pip of described font size control module;
The color control module is used for when receiving the trigger pip of described input processing module, judges that font color is revised in described event information indication and/or the title back color is revised in indication;
Font color is revised execution module, is used for when receiving the trigger pip of described color control module, revises font color;
The title back color is revised execution module, is used for when receiving the trigger pip of described color control module, revises the title back color.
14, equipment as claimed in claim 13, it is characterized in that it is index with the font size corresponding identifier that described font is amplified execution module, finds the length value and the width value in the shared zone of font respectively, and, increase progressively described length value and width value according to former Aspect Ratio relation.
15, equipment as claimed in claim 13, it is characterized in that it is index with the font size corresponding identifier that described font is dwindled execution module, find the length value and the width value in the shared zone of font respectively, and according to former Aspect Ratio relation, described length value and width value successively decrease.
16, equipment as claimed in claim 13 is characterized in that, it is index with the font color corresponding identifier that described font color is revised execution module, finds the color value of foreground object, and revises the color value of foreground object with one of default color value.
17, equipment as claimed in claim 13, it is characterized in that, it is index with title back color corresponding identifier that described title back color is revised execution module, finds the color value of background object, and revises the color value of background object with one of default color value.
As each described equipment of claim 11 to 17, it is characterized in that 18, the property value of described caption data exceeds with default maximal value and/or minimum value.
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| CN 200610083908 CN101086834A (en) | 2006-06-06 | 2006-06-06 | A method for controlling display effect of caption and control device |
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| CN 200610083908 CN101086834A (en) | 2006-06-06 | 2006-06-06 | A method for controlling display effect of caption and control device |
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| CN101764955A (en) * | 2008-11-28 | 2010-06-30 | 新奥特（北京）视频技术有限公司 | Fast caption-inputting method |
| CN101489052B (en) * | 2008-01-14 | 2010-12-01 | 中国网通集团宽带业务应用国家工程实验室有限公司 | Subtitle data processing method and apparatus |
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| CN102082932A (en) * | 2009-11-30 | 2011-06-01 | 新奥特（北京）视频技术有限公司 | Method and device for updating subtitle in secondary software |
| CN102082932B (en) * | 2009-11-30 | 2015-03-25 | 新奥特（北京）视频技术有限公司 | Method and device for updating subtitle in secondary software |
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| CN102572298A (en) * | 2010-12-29 | 2012-07-11 | 新奥特（北京）视频技术有限公司 | System and method for rendering subtitle in advance |
| CN102724410A (en) * | 2011-05-06 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | Method and apparatus for font correction of different caption generators |
| CN102724417B (en) * | 2011-05-09 | 2015-05-27 | 新奥特（北京）视频技术有限公司 | Method and system for realizing caption special effect in louver mode |
| CN102724417A (en) * | 2011-05-09 | 2012-10-10 | 新奥特（北京）视频技术有限公司 | Method and system for realizing caption special effect in louver mode |
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| CN102984467A (en) * | 2012-10-30 | 2013-03-20 | 广东威创视讯科技股份有限公司 | Subtitle real-time update method and subtitle real-time update system |
| CN103414936A (en) * | 2013-08-02 | 2013-11-27 | 深圳Tcl新技术有限公司 | Subtitle display method and device |
| CN103414936B (en) * | 2013-08-02 | 2017-07-25 | 深圳Tcl新技术有限公司 | Caption presentation method and device |
| CN103533256A (en) * | 2013-10-28 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Method and device for processing subtitle and subtitle display system |
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| CN112055261A (en) * | 2020-07-14 | 2020-12-08 | 北京百度网讯科技有限公司 | Subtitle display method and device, electronic equipment and storage medium |
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