CN104394332A - Word stock establishing method applied to SDI (Serial Digital Interface) HD video character superimposition and word stock device - Google Patents
Word stock establishing method applied to SDI (Serial Digital Interface) HD video character superimposition and word stock device Download PDFInfo
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- CN104394332A CN104394332A CN201410684217.9A CN201410684217A CN104394332A CN 104394332 A CN104394332 A CN 104394332A CN 201410684217 A CN201410684217 A CN 201410684217A CN 104394332 A CN104394332 A CN 104394332A
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Abstract
The invention provides a word stock establishing method applied to SDI (Serial Digital Interface) HD video character superimposition and a word stock device. The method comprises the following steps of removing repeated Chinese characters to form a fixed word stock area, and storing in a full-width character format by a 64*64 dot-matrix mode; removing repeated symbols and letters to form a half variable word stock area, and storing in a half-width character format by a 32*64 dot-matrix mode; removing repeated numbers to form a full variable word stock area, and storing in a half-width character format by a 32*64 dot-matrix mode. With the adoption of the word stock establishing method and the word stock device, the created word stock meets the service application, the design difficulty at HD character superimposition and the product cost are reduced, and a chip resource can be reasonably utilized well.
Description
Technical field
The present invention relates to Video Character Superpose field, particularly relate to one and be applicable to digital serial interface SDI(serial digital interface) the character library method for building up of HD video character adding and character library device.
Background technology
SDI high-resolution video transfer system relies on the development of chip technology and the characteristic of the low delay of high-fidelity, is more and more more popularized and applies; In SDI HD video transmitting procedure, the demand of HD video being carried out to character adding also becomes very urgent.Character pattern for high definition character adding requires higher, general employing 64*64 dot matrix, even larger.Therefore, if a complete character library is all stored into inside an equipment, device storage cost certainly will be caused very high, design circuit is complicated; If the content of display is cured to inside equipment completely, dumb when bringing so again application, the conversion constantly of character becomes difficulty; If dot matrix is flushed to inside the equipment of character adding by computer or other communication equipments, the amount of communication data of needs is large, and refresh not prompt enough, equipment cost is also very high.For more above-mentioned problems in this field the still good specification of neither one and agreement.
Summary of the invention
The object of the invention is to for above shortcomings in prior art, a kind of the character library method for building up and the character library device that are applicable to SDI HD video character adding are provided, while this character library can meet service application, reduce design difficulty and the product cost of high definition character adding, better Appropriate application resources of chip.
To achieve these goals, the one that one embodiment of the invention provides is applicable to digital serial interface SDI(serial digital interface) the character library method for building up of HD video character adding, it is characterized in that comprising the following steps:
Determine the content needing display;
Chinese character part is divided into, symbol and letter part, and numerical portion by needing the content of display;
After Chinese character duplicate removal, as the fixed area of character library, double byte character form is adopted to store with 64*64 dot pattern;
After symbol and letter part duplicate removal, as half region of variation of character library, half-angle character format is adopted to store with 32*64 dot pattern;
After numerical portion duplicate removal, as the full region of variation of character library, half-angle character format is adopted to store with 32*64 dot pattern;
According to Charactes Display control command from described fixed area, half region of variation or/and full region of variation exports described lattice information after extracting the lattice information of character.
The one that another embodiment of the present invention provides is applicable to digital serial interface SDI(serial digital interface) the character library device of HD video character adding, it is characterized in that comprising with lower module:
Fixed area module, it, for after needing the Chinese character part duplicate removal in the content of display, adopts double byte character form to preserve with 64*64 dot pattern;
Half region of variation module, it, for after needing symbol in the content of display and letter part duplicate removal, adopts half-angle character format to preserve with 32*64 dot pattern;
Full region of variation module, it, for after needing the numerical portion duplicate removal in the content of display, adopts half-angle character format to store with 32*64 dot pattern;
Character output interface, for according to Charactes Display control command from described fixed area module, half region of variation module or/and full region of variation module exports character superimposing device to after extracting the lattice information of character.
The method for building up of above-mentioned character library, by the definition of full region of variation, can meet the application of mathematics display in business, the such as time, numbering etc.; Half region of variation supports incomplete change, and that is change and do not cover all symbols and letter, because when practical business is applied, the kind of business determines the content in this region, and business needed for all coverings is just passable; Fixed area for be the specific word of whole Chinese character base, because whole Chinese character base is too large, and this part is also just determined when equipment is installed, the later stage is fixed as device description, so, the content needed is done into just passable according to business demand.The method for building up of this character library had both achieved the constantly change demand of business to character, again reduced production cost and design difficulty.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form limitation of the invention.
Fig. 1 is the structural representation of the character library set up in the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
The character library set up of the embodiment of the present invention its substantially realize principle as shown in Figure 1, character library is divided into three parts: full region of variation, half region of variation, fixed area.Wherein full region of variation and half region of variation adopt half-angle character number, and fixed area adopts double byte character form.
Full region of variation: Arabic numerals 0-9 is deposited in this region, deposits with half-angle form, and this region can realize the display of time, the display of No. ID in display, and other need the application of numerical monitor;
Half region of variation: punctuation mark for showing and format symbol and indivedual letter etc. for showing are deposited in this region, and this region need not cover all symbols and letter, and according to the needs of business, the content in this region is easy to decide.Not covering all symbols is also to save valuable memory headroom;
Fixed area: Chinese character other characters of fixing display are deposited in this region, the content just decided when the content of this region display is service application, belongs to invariant region;
The design of above-mentioned character library, by the definition of full region of variation, can meet the application of mathematics display in business, the such as time, numbering etc.; Half region of variation supports incomplete change, that is changes and do not cover all symbols and letter, because when practical business apply, the kind of business has felt the content in this region, and business needed for all coverings is just passable; Fixed area for be the specific word of whole Chinese character base, because whole Chinese character base is too large, and this part is also just determined when equipment is installed, the later stage is fixed as device description, so, the content needed is done into just passable according to business demand.
Embodiment 1
Provide in the present embodiment to set up and involved in the present invention be applicable to digital serial interface SDI(serial digital interface) detailed process of the character library of HD video character adding, comprise the following steps:
(1) content needing display is determined.
The content of display determines according to embody rule usually.Displaying contents involved in general application generally includes Chinese character part, symbolic component, and digital or letter part.Wherein, Chinese character negligible amounts, mostly is the information such as title, classification, unit of measurement.
(2) will the content of display be needed to be divided into Chinese character part, symbol and letter part, and numerical portion.
Symbol and letter part generally include any or several combinations of mathematical operation symbol, punctuation mark, format symbol, letter, space or other additional characters, and numeral is Arabic numerals 0-9, and letter is English alphabet.
(3) by after Chinese character duplicate removal, as the fixed area of character library, double byte character form is adopted to store with 64*64 dot pattern;
(4) by after symbol and letter part duplicate removal, as half region of variation of character library, half-angle character format is adopted to store with 32*64 dot pattern;
(5) using the full region of variation of numerical portion as character library, half-angle character format is adopted to store with 32*64 dot pattern;
(6) according to Charactes Display control command from described fixed area, half region of variation or/and full region of variation exports described lattice information after extracting the lattice information of character.
Wherein, described dot array data can be stored in the RAM of FPGA inside of overlaying character, and character adding logic, according to the storage inside structure of character library, just can be added to the dot matrix be stored in RAM on HD video.
Embodiment 2
Provide in the present embodiment to set up and involved in the present invention be applicable to digital serial interface SDI(serial digital interface) the character library device of HD video character adding, it is characterized in that comprising with lower module:
Fixed area module, it, for after needing the Chinese character part duplicate removal in the content of display, adopts double byte character form to preserve with 64*64 dot pattern;
Half region of variation module, it, for after needing symbol in the content of display and letter part duplicate removal, adopts half-angle character format to preserve with 32*64 dot pattern;
Full region of variation module, it, for after needing the numerical portion duplicate removal in the content of display, adopts half-angle character format to store with 32*64 dot pattern;
Character output interface, for according to Charactes Display control command from described fixed area module, half region of variation module or/and full region of variation module exports character superimposing device to after extracting the lattice information of character.
Wherein, symbol and letter part generally include any or several combinations of mathematical operation symbol, punctuation mark, format symbol, letter, space or other additional characters, and numeral is Arabic numerals 0-9, and letter is English alphabet.
Wherein, described dot array data is stored in the RAM of FPGA inside of overlaying character, and character adding logic, according to the storage inside structure of character library, just can be added to the dot matrix be stored in RAM on HD video.
Embodiment 3
The present embodiment provides the example of a practical application, with to help better to understand in the present invention set up the principle of character library.Need on the HD video of banking system in the application of overlaying character, Chinese text used is more fixing, " sales counter number " such as only applied, " amount ", " open ", by these Chinese characters and numeral 0123456789, and space is combined with ": ", thus on HD video, show required content.Concrete character library design is as follows: " 0123456789 " is full region of variation, space and ": " are half region of variation, " sales counter amount is opened " is fixed area, and full region of variation and half region of variation adopt half-angle character format, and fixed area adopts double byte character form.Utilize this character library can superpose the character of following form on HD video:
Sales counter number: 28 numbers: 20 amounts: 2000
Embodiment 4
The present embodiment provides the example of another practical application.In high definition character adding equipment for meteorology monitoring, the Chinese text used is generally wind-force, temperature, humidity, symbol be generally ": ", " % ", therefore, the design of concrete character library is as follows: " 0123456789 " is full region of variation, and space and ": % " are half region of variation, and " humiture wind-force to " is fixed area, full region of variation and half region of variation adopt half-angle character format, and fixed area adopts double byte character form.Utilize this character library can superpose the character of following form on HD video:
Temperature: 30 humidity: 60% wind-force: 3 grades
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. be applicable to a character library method for building up for digital serial interface SDI HD video character adding, it is characterized in that comprising the following steps:
Determine the content needing display;
Chinese character part is divided into, symbol and letter part, and numerical portion by needing the content of display;
After Chinese character duplicate removal, as the fixed area of character library, double byte character form is adopted to store with 64*64 dot pattern;
After symbol and letter part duplicate removal, as half region of variation of character library, half-angle character format is adopted to store with 32*64 dot pattern;
After numerical portion duplicate removal, as the full region of variation of character library, half-angle character format is adopted to store with 32*64 dot pattern;
According to Charactes Display control command from described fixed area, half region of variation or/and full region of variation exports described lattice information after extracting the lattice information of character.
2. the method for claim 1, wherein symbol and letter part comprise any or several combinations of mathematical operation symbol, punctuation mark, format symbol, letter, space or other additional characters.
3. the method for claim 1, wherein numeral is Arabic numerals 0-9, and letter is English alphabet.
4. the method as described in claim 1-3, wherein, described dot array data is stored in the RAM of FPGA inside of overlaying character.
5. be applicable to a character library device for digital serial interface SDI HD video character adding, it is characterized in that comprising with lower module:
Fixed area module, it, for after needing the Chinese character part duplicate removal in the content of display, adopts double byte character form to preserve with 64*64 dot pattern;
Half region of variation module, it, for after needing symbol in the content of display and letter part duplicate removal, adopts half-angle character format to preserve with 32*64 dot pattern;
Full region of variation module, it, for after needing the numerical portion duplicate removal in the content of display, adopts half-angle character format to store with 32*64 dot pattern;
Character output interface, for according to Charactes Display control command from described fixed area module, half region of variation module or/and full region of variation module exports character superimposing device to after extracting the lattice information of character.
6. device as claimed in claim 5, wherein, symbol and letter part comprise any or several combinations of mathematical operation symbol, punctuation mark, format symbol, letter, space or other additional characters.
7. device as claimed in claim 5, wherein, numeral is Arabic numerals 0-9, and letter is English alphabet.
8. the device as described in claim 5-7, wherein, described dot array data is stored in the RAM of FPGA inside of overlaying character.
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| CN201410684217.9A CN104394332A (en) | 2014-11-25 | 2014-11-25 | Word stock establishing method applied to SDI (Serial Digital Interface) HD video character superimposition and word stock device |
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| CN201410684217.9A CN104394332A (en) | 2014-11-25 | 2014-11-25 | Word stock establishing method applied to SDI (Serial Digital Interface) HD video character superimposition and word stock device |
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| US20080222133A1 (en) * | 2007-03-08 | 2008-09-11 | Anthony Au | System that automatically identifies key words & key texts from a source document, such as a job description, and apply both (key words & text) as context in the automatic matching with another document, such as a resume, to produce a numerically scored result. |
| CN102379707A (en) * | 2010-09-01 | 2012-03-21 | 深圳迈瑞生物医疗电子股份有限公司 | Beam limiting device interface display method and device |
| CN102750340A (en) * | 2012-06-01 | 2012-10-24 | 浙江宇视科技有限公司 | Processing method and device for dot matrix data |
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2014
- 2014-11-25 CN CN201410684217.9A patent/CN104394332A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020019989A1 (en) * | 2000-06-01 | 2002-02-14 | Sanyo Electric Co., Ltd. | Method of displaying character data in digital television broadcasting receiver |
| CN1710946A (en) * | 2005-07-08 | 2005-12-21 | 杭州海康威视数字技术有限公司 | Method for overlaying character on digital picture |
| CN2834054Y (en) * | 2005-10-14 | 2006-11-01 | 彩虹集团电子股份有限公司 | Special menu for quick TV channel search |
| US20080222133A1 (en) * | 2007-03-08 | 2008-09-11 | Anthony Au | System that automatically identifies key words & key texts from a source document, such as a job description, and apply both (key words & text) as context in the automatic matching with another document, such as a resume, to produce a numerically scored result. |
| CN101178729A (en) * | 2007-12-12 | 2008-05-14 | 北京中星微电子有限公司 | Words display process in embedded system and system thereof |
| CN102379707A (en) * | 2010-09-01 | 2012-03-21 | 深圳迈瑞生物医疗电子股份有限公司 | Beam limiting device interface display method and device |
| CN102750340A (en) * | 2012-06-01 | 2012-10-24 | 浙江宇视科技有限公司 | Processing method and device for dot matrix data |
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Application publication date: 20150304 |