CN101600082A - High definition shows the method and the device of captions in the TV conference system - Google Patents
High definition shows the method and the device of captions in the TV conference system Download PDFInfo
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- CN101600082A CN101600082A CNA2009101501228A CN200910150122A CN101600082A CN 101600082 A CN101600082 A CN 101600082A CN A2009101501228 A CNA2009101501228 A CN A2009101501228A CN 200910150122 A CN200910150122 A CN 200910150122A CN 101600082 A CN101600082 A CN 101600082A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/278—Subtitling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
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- Controls And Circuits For Display Device (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses the method and the device of high definition demonstration captions in a kind of TV conference system, comprising: video conference terminal is provided with caption name symbol string to be shown and this caption name symbol string attribute, and according to this caption name symbol string attribute one buffering area is set; Described video conference terminal generates the high definition chromatic graph according to the type matrix that described caption name symbol string attribute extracts in the vector font library, this high definition chromatic graph that generates is write the described buffering area of setting; Described video conference terminal shows it after the described high definition chromatic graph that generates is carried out format conversion.Use the present invention, make the demonstration of captions can reach high-definition effect, make it meet the requirement of the high definition notion of high definition terminal.
Description
Technical field
The present invention relates to captions demonstration field in the TV conference system, more specifically relate to the method and the device of high definition demonstration captions in a kind of TV conference system.
Background technology
Along with the fast development of video conferencing technology, people are to video, sound, and images etc. require more and more higher, pursue better effect, and existing captions display effect more and more can not satisfy people's requirement.What existing subtitle superposition adopted is bitonal bitmap, this bitonal bitmap or generate by dot matrix word library or generate through overcompression by other character library.The dot matrix word library disadvantage be exactly it be fixed resolution, just every kind of character library all has fixing size dimension, uses under original size, display effect is fine, if but with its amplification or dwindle use, display effect will no good cake, the crenellated phenomena of saying usually will occur.And if the bitonal bitmap that other character library compression generates with its amplification or dwindle, crenellated phenomena also can occur, does not meet the requirement of the high definition notion of present high definition terminal.
The technical scheme how high definition demonstration captions in a kind of TV conference system are provided is the current problem that needs solution.
Summary of the invention
Technical problem to be solved by this invention provides the method and the device of high definition demonstration captions in a kind of TV conference system, makes the demonstration of captions can reach high-definition effect, makes it meet the requirement of the high definition notion of high definition terminal.
In order to address the above problem, the invention provides the method for high definition demonstration captions in a kind of TV conference system, comprising:
Video conference terminal is provided with caption name symbol string to be shown and this caption name symbol string attribute, and according to this caption name symbol string attribute one buffering area is set;
Described video conference terminal generates the high definition chromatic graph according to the type matrix that described caption name symbol string attribute extracts in the vector font library, this high definition chromatic graph that generates is write the described buffering area of setting;
Described video conference terminal shows it after the described high definition chromatic graph that generates is carried out format conversion.
The present invention also provides the device of high definition demonstration captions in a kind of TV conference system, comprising: master control IDT unit, Digital Signal Processing DSP unit, graphic user interface GUI unit and graphics engine type matrix extraction unit, wherein,
Be used to caption name symbol string and attribute thereof to be shown are set, and the symbol of the caption name after will being provided with is gone here and there and attribute sends to described IDT unit in described GUI unit; This caption name that receives this IDT unit transmission accords with the buffer zone address and the size of string and sends to described graphics engine type matrix extraction unit; Receive the size and the address of the high definition chromatic graph that this graphics engine type matrix extraction unit sends and send to described IDT unit;
Described IDT unit is used in described DSP unit one buffering area being set according to the described caption name symbol string attribute that the described GUI unit that obtains sends, and the address and the size of this buffering area is sent to described GUI unit; Described DSP unit is informed in the high definition chromatic graph size and the address that receive;
Described graphics engine type matrix extraction unit is used for according with string attribute according to the described caption name that the described GUI unit that receives sends, and the type matrix that extracts in the vector font library generates the high definition chromatic graph; And the size and the address of the high definition chromatic graph that generates sent to this GUI unit;
Described DSP unit, this high definition chromatic graph is read in the size and the address that are used for the described high definition chromatic graph that sends according to the described IDT unit that receives, and this high definition chromatic graph is carried out showing after the format conversion and with it.
Compared with prior art, use the present invention, make the demonstration of captions can reach high-definition effect, make it meet the requirement of the high definition notion of high definition terminal; The type matrix that extracts in the vector font library by graphics engine type matrix extraction procedure can generate the different type matrix of all size color, well solve former meeting-place name and shown the serious problem of crenellated phenomena, improve user's result of use visual effect, reached the purpose that high definition shows.
Description of drawings
Fig. 1 is the structural representation that high definition shows the device of captions in a kind of TV conference system of the present invention;
Fig. 2 is the flow chart that the present invention's high definition in TV conference system shows the method for captions;
Fig. 3 is the flow chart that captions high definition of the present invention shows.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, high definition shows the device of captions in a kind of TV conference system of the present invention, comprise, and master control (IDT) unit, Digital Signal Processing (DSP) unit, graphic user interface (GUI) unit and graphics engine type matrix extraction unit, wherein,
Described GUI unit is used to be provided with caption name symbol string and attribute thereof to be shown, and the meeting-place name character string after will being provided with and attribute thereof send to described IDT unit; This caption name that receives this IDT unit transmission accords with the buffer zone address and the size of string and sends to described graphics engine type matrix extraction unit; Receive the size and the address of the high definition chromatic graph that this graphics engine type matrix extraction unit sends and send to main control unit;
Described IDT unit is used in described DSP unit one buffering area being set according to the described caption name symbol string attribute that obtains, and the address and the size of this buffering area is sent to described GUI unit; Described DSP unit is informed in the high definition chromatic graph size and the address that receive;
Described graphics engine type matrix extraction unit is used for according with string attribute according to the described caption name that the described GUI unit that receives sends, and the type matrix that extracts in the vector font library generates the high definition chromatic graph; And the size and the address of the high definition chromatic graph that generates sent to this GUI unit;
Described DSP unit, this high definition chromatic graph is read in the size and the address that are used for the described high definition chromatic graph that sends according to the described IDT unit that receives, this high definition chromatic graph is carried out format conversion after, and the high definition chromatic graph after will changing shows.
The method of high definition demonstration captions in the TV conference system among the present invention as shown in Figure 2, comprising:
Wherein, captions name to be shown is with meeting-place example by name.
Described meeting-place name character string attribute comprises: attributes such as captions color of captions name (the captions color of captions name comprises the font color and the background colour of captions name) and font size.
Vector font library is that the stroke of each character is resolved into various straight lines and curve, writes down the parameter of these straight lines and curve then, and when showing, again according to concrete size, these lines that draw have just reduced original character.The benefit of vector font library can arbitrarily be amplified exactly and dwindled and undistorted.
GUI utilizes graphics engine type matrix extraction procedure to generate 16 chromatic graph according to the type matrix that meeting-place name character string attribute in the described information extracts in the vector font library according to meeting-place name in the described information, may further comprise the steps:
Name character string in meeting-place in the described information is carried out character code, in vector font library, retrieves the data of this character, take out the end points coordinate then, it is carried out suitable geometric transformation, again according to each end points whether the sign of line generate i.e. 16 the chromatic graph of character.
The information that step 204, GUI unit will comprise described chromatic graph size and address sends to main control unit;
After step 205, main control unit were received the information that comprises described chromatic graph size and address that the GUI unit sends, notice DSP unit read data in the buffering area according to the information that receives;
Step 206, DSP read the data of buffering area, and described chromatic graph is carried out format conversion, and the chromatic graph information after the format conversion is shown, have realized that the high definition of meeting-place name shows.
Because the chromatic graph that GUI generates is a rgb format, DSP is converted to yuv format with rgb format.
Below in conjunction with accompanying drawing and with meeting-place example by name holistic approach of the present invention is described.As shown in Figure 3:
Step 301:GUI unit obtains the character string to be shown and the attribute that setups string; The GUI unit sends the message that shows meeting-place name " meeting-place, Shenzhen 1 " to main control unit;
The font size that character string to be shown " meeting-place, Shenzhen 1 " is set is 72, and font color is yellow, and background color is a blueness etc.
Step 302: after main control unit is received message, the buffer zone address and the size of this character string to be shown of being provided with fed back to the GUI unit, the GUI unit obtains " meeting-place, Shenzhen 1 " from the message that main control unit feeds back;
The buffer zone address of this character string to be shown that step 303:GUI unit will be provided with and size send to graphics engine type matrix extraction unit;
Step 304: graphics engine type matrix extraction unit extracts the vector font library type matrix should character string to be shown generate 16 chromatic graphs;
Step 305: 16 chromatic graph sizes and address that graphics engine type matrix extraction unit will generate send to the GUI unit;
Step 306:GUI unit sends message to main control unit, 16 chromatic graph sizes telling that main control unit generates and address:
16 chromatic graph sizes are wide * height (328*90), because the height of the demonstration of Chinese character and width are greater than common ASCII character, so height and width are wanted suitable adjustment.
Step 307: the DSP unit is informed in 16 chromatic graph sizes and address that main control unit will generate, allows the DSP unit remove to read this high definition chromatic graph;
Step 308:DSP reads the unit 16 chromatic graphs of generation, and it is converted to YUV by rgb format, and the chromatic graph information after the format conversion is shown.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, the method for high definition demonstration captions in a kind of TV conference system is characterized in that, comprising:
Video conference terminal is provided with caption name symbol string to be shown and this caption name symbol string attribute, and according to this caption name symbol string attribute one buffering area is set;
Described video conference terminal generates the high definition chromatic graph according to the type matrix that described caption name symbol string attribute extracts in the vector font library, this high definition chromatic graph that generates is write the described buffering area of setting;
Described video conference terminal shows it after the described high definition chromatic graph that generates is carried out format conversion.
2, the method for claim 1 is characterized in that,
Described video conference terminal is provided with caption name to be shown symbol string attribute and comprises that this video conference terminal is provided with arbitrary or a plurality of attribute in the captions color of this captions name and the font size;
Wherein, the captions color of described captions name comprises the font color and the background colour of captions name;
The high definition chromatic graph that described video conference terminal extracts the type matrix generation in the vector font library according to described caption name symbol string attribute is 16 a chromatic graph.
3, the method for claim 1 is characterized in that,
Described video conference terminal generates the high definition chromatic graph according to the type matrix that described caption name symbol string attribute extracts in the vector font library, is divided into following steps:
Described video conference terminal carries out character code with described caption name symbol string, retrieves the data of this character in vector font library, takes out the end points coordinate then, and it is carried out geometric transformation, again according to each end points whether the sign of line generate the high definition chromatic graph.
4, the method for claim 1 is characterized in that,
Described vector font library is that the stroke with each character resolves into various straight lines and curve, writes down the parameter of these straight lines and curve then, when showing, and again according to concrete size, these lines that draw, guaranteeing that character arbitrarily amplifies dwindles and undistorted.
5, the method for claim 1 is characterized in that,
Described video conference terminal is a rgb format according to the form that described caption name symbol string attribute extracts the type matrix generation high definition chromatic graph in the vector font library;
Described video conference terminal carries out format conversion to the described high definition chromatic graph that generates and is meant that the form with this high definition chromatic graph is converted to yuv format by rgb format.
6, the device of high definition demonstration captions in a kind of TV conference system is characterized in that,
Comprise: master control IDT unit, Digital Signal Processing DSP unit, graphic user interface GUI unit and graphics engine type matrix extraction unit, wherein,
Be used to caption name symbol string and attribute thereof to be shown are set, and the symbol of the caption name after will being provided with is gone here and there and attribute sends to described IDT unit in described GUI unit; This caption name that receives this IDT unit transmission accords with the buffer zone address and the size of string and sends to described graphics engine type matrix extraction unit; Receive the size and the address of the high definition chromatic graph that this graphics engine type matrix extraction unit sends and send to described IDT unit;
Described IDT unit is used in described DSP unit one buffering area being set according to the described caption name symbol string attribute that the described GUI unit that obtains sends, and the address and the size of this buffering area is sent to described GUI unit; Described DSP unit is informed in the high definition chromatic graph size and the address that receive;
Described graphics engine type matrix extraction unit is used for according with string attribute according to the described caption name that the described GUI unit that receives sends, and the type matrix that extracts in the vector font library generates the high definition chromatic graph; And the size and the address of the high definition chromatic graph that generates sent to this GUI unit;
Described DSP unit, this high definition chromatic graph is read in the size and the address that are used for the described high definition chromatic graph that sends according to the described IDT unit that receives, and this high definition chromatic graph is carried out showing after the format conversion and with it.
7, device as claimed in claim 6 is characterized in that,
Described GUI unit is provided with caption name symbol string attribute to be shown and comprises that this video conference terminal is provided with arbitrary or a plurality of attribute of the captions color and the font size of this captions name;
Wherein, the captions color of described captions name comprises the font color and the background colour of captions name;
Described graphics engine type matrix extraction unit is according to described caption name symbol string attribute, and the high definition chromatic graph that extracts the type matrix generation in the vector font library is 16 a chromatic graph.
8, device as claimed in claim 6 is characterized in that,
Described graphics engine type matrix extraction unit generates the high definition chromatic graph according to the type matrix that described caption name symbol string attribute extracts in the vector font library, is meant:
Described graphics engine type matrix extraction unit carries out character code with described caption name symbol string, in vector font library, retrieve the data of this character, take out the end points coordinate then, it carried out geometric transformation, again according to each end points whether the sign of line generate the high definition chromatic graph.
9, device as claimed in claim 6 is characterized in that,
Described graphics engine type matrix extraction unit is meant according to vector font library described in the type matrix generation high definition chromatic graph in the described caption name symbol string attribute extraction vector font library:
The stroke of each character is resolved into various straight lines and curve, write down the parameter of these straight lines and curve then, when showing, again according to concrete size, these lines that draw, guaranteeing that character arbitrarily amplifies dwindles and undistorted.
10, device as claimed in claim 6 is characterized in that,
Described graphics engine type matrix extraction unit is a rgb format according to the form that described caption name symbol string attribute extracts the type matrix generation high definition chromatic graph in the vector font library;
Described DSP unit carries out format conversion to described high definition chromatic graph and is meant that the form with this high definition chromatic graph is converted to yuv format by rgb format.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101501228A CN101600082A (en) | 2009-07-03 | 2009-07-03 | High definition shows the method and the device of captions in the TV conference system |
| PCT/CN2010/074084 WO2011000269A1 (en) | 2009-07-03 | 2010-06-18 | Method and device for high definition display of subtitles in video conference system |
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| CNA2009101501228A CN101600082A (en) | 2009-07-03 | 2009-07-03 | High definition shows the method and the device of captions in the TV conference system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000269A1 (en) * | 2009-07-03 | 2011-01-06 | 中兴通讯股份有限公司 | Method and device for high definition display of subtitles in video conference system |
| CN102595055A (en) * | 2012-02-29 | 2012-07-18 | 北京汉邦高科数字技术股份有限公司 | Method for superposing characters on YUV image |
| CN103747191A (en) * | 2014-01-27 | 2014-04-23 | 大连科迪视频技术有限公司 | Network interaction high-definition character superimposition system |
| CN105025235A (en) * | 2015-07-22 | 2015-11-04 | 山东神戎电子股份有限公司 | Hard light visible character superposing method based on laser night vision device |
| CN112492239A (en) * | 2019-09-12 | 2021-03-12 | 北京嗨动视觉科技有限公司 | Character superposition display method, device and system and computer readable storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103024341A (en) * | 2012-12-14 | 2013-04-03 | 滨州禾丰高效生态产业技术开发有限公司 | Handheld mobile terminal information inquiry system for winter jujubes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401750C (en) * | 2004-01-12 | 2008-07-09 | 松下电器产业株式会社 | Caption coding device |
| CN1558664A (en) * | 2004-01-17 | 2004-12-29 | 上海交通大学 | A high definition digital television program caption and background image synthesis method |
| CN101179669B (en) * | 2006-11-08 | 2011-03-16 | 中兴通讯股份有限公司 | Session television terminal subtitling generating and stacking method |
| CN101600082A (en) * | 2009-07-03 | 2009-12-09 | 中兴通讯股份有限公司 | High definition shows the method and the device of captions in the TV conference system |
-
2009
- 2009-07-03 CN CNA2009101501228A patent/CN101600082A/en active Pending
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2010
- 2010-06-18 WO PCT/CN2010/074084 patent/WO2011000269A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000269A1 (en) * | 2009-07-03 | 2011-01-06 | 中兴通讯股份有限公司 | Method and device for high definition display of subtitles in video conference system |
| CN102595055A (en) * | 2012-02-29 | 2012-07-18 | 北京汉邦高科数字技术股份有限公司 | Method for superposing characters on YUV image |
| CN103747191A (en) * | 2014-01-27 | 2014-04-23 | 大连科迪视频技术有限公司 | Network interaction high-definition character superimposition system |
| CN103747191B (en) * | 2014-01-27 | 2017-02-15 | 大连科迪视频技术有限公司 | Network interaction high-definition character superimposition system |
| CN105025235A (en) * | 2015-07-22 | 2015-11-04 | 山东神戎电子股份有限公司 | Hard light visible character superposing method based on laser night vision device |
| CN105025235B (en) * | 2015-07-22 | 2018-01-30 | 山东神戎电子股份有限公司 | A kind of visible character overlapping method of strong light based on laser night-vision device |
| CN112492239A (en) * | 2019-09-12 | 2021-03-12 | 北京嗨动视觉科技有限公司 | Character superposition display method, device and system and computer readable storage medium |
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| Publication number | Publication date |
|---|---|
| WO2011000269A1 (en) | 2011-01-06 |
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