CN101888508A - Method for rolling subtitles of set-top box with low memory - Google Patents
Method for rolling subtitles of set-top box with low memory Download PDFInfo
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- CN101888508A CN101888508A CN 201010230129 CN201010230129A CN101888508A CN 101888508 A CN101888508 A CN 101888508A CN 201010230129 CN201010230129 CN 201010230129 CN 201010230129 A CN201010230129 A CN 201010230129A CN 101888508 A CN101888508 A CN 101888508A
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Abstract
The invention discloses a method for rolling subtitles of a set-top box with low memory. In the method, the rolling subtitles of the set-top box are output and displayed by using a character output function and the method comprises the following steps of: receiving instruction information of the contents of the rolling subtitles to be displayed, the total character length and a rolling display manner; calculating a start position, the step length and a step number of the rolling display of the subtitles in a display area according to the received instruction information; calculating the contents to be displayed in each rolling display step, wherein the contents comprise characters or partial pixels in the characters; and circularly reading the contents to be displayed in the step 03 by using the character output function, outputting and displaying the contents to be displayed in the step 03, and the like. In the method, the characters to be displayed in each rolling display step or the pixels of any part of the characters are displayed by using the character output function, and the method greatly reduces the requirement of subtitle rolling of the set-top box on the memory without needing a special memory buffer area.
Description
Technical field
The present invention relates to technical field of digital television set-top, relate in particular to the method that a kind of low internal memory is realized the set-top box captions rolling.
Background technology
Flourish along with Digital Television, set-top box as the digital TV terminal representative has more and more entered people's family, set-top box is except transmitting the digital television program, also possess other multiple functions, captions rolling wherein is exactly its very important function, radio and television operator can deliver various Word messages and roll display to set-top box, promptly can show all kinds of news informations, also can show each series advertisements, for radio and television operator and user offer convenience.The general employing of the captions rolling method of the set-top box of Digital Television opened up the rolling that special sub-title buffer is carried out captions at present, this sample loading mode need take a large amount of internal memories, along with the roll titles number of words constantly increases, required memory is also increasing, will influence the speed of service of set-top box, in order to guarantee that the speed of service just needs to increase the set-top box memory configurations, will increase the manufacturing cost of set-top box.
Summary of the invention
The object of the invention provides a kind of method of utilizing function real-time calling captions character, not needing the low internal memory realization set-top box captions rolling of special core buffer.
The present invention is by the following technical solutions: low internal memory realizes that the method for set-top box captions rolling adopts the character output function to export the roll titles of display machines top box, and the method for described drafting roll titles comprises the steps:
Step 01: the command information that receives roll titles content to display, character total length and roll display mode;
Step 02: calculate the original position of captions roll display in the viewing area, the stepping length of roll display and the step number of roll display according to the command information that receives;
Step 03: calculate content to display in each rolling display step, content displayed comprises the partial pixel in character or the character;
Step 04: adopt content to display in the character output function circulation read step 03, content to display in the output step display 03.
The method of content to display in the character output function circulation output step display 03 in the described step 04, it comprises the steps:
Step 041: read content to display in the analytical procedure 03, from character library, extract corresponding character pattern data, character pattern data is decomposed into horizontal pixel and vertical pixel output shows according to the pixel size of viewing area;
Step 042: by from left to right, from top to bottom ranks sequential scanning judges whether character display pixel of this pixel, then draws out the respective pixel point if any the character display pixel;
Step 043: shown that content circulation to display shows content to display in the next rolling display step in the rolling display step.
The invention has the beneficial effects as follows: the present invention utilizes the character output function that character to display output in each rolling display step is shown, the pixel that the character output function can the output character arbitrary portion; The present invention does not need special core buffer, has significantly reduced the demand of set-top box captions rolling to internal memory, has saved the manufacturing cost of set-top box.
Embodiment
The present invention adopts the character output function to export the roll titles of display machines top box, and the method for described drafting roll titles comprises the steps:
Step 01: the command information that receives roll titles content to display, character total length and roll display mode;
Step 02: calculate the original position of captions roll display in the viewing area, the stepping length of roll display and the step number of roll display according to the command information that receives;
Step 03: calculate content to display in each rolling display step, content displayed comprises the partial pixel in character or the character;
Step 04: adopt content to display in the character output function circulation read step 03, content to display in the output step display 03.
The method of content to display in the character output function circulation output step display 03 in the described step 04, it comprises the steps:
Step 041: read content to display in the analytical procedure 03, from character library, extract corresponding character pattern data, character pattern data is decomposed into horizontal pixel and vertical pixel output shows according to the pixel size of viewing area;
Step 042: by from left to right, from top to bottom ranks sequential scanning judges whether character display pixel of this pixel, then draws out the respective pixel point if any the character display pixel;
Step 043: shown that content circulation to display shows content to display in the next rolling display step in the rolling display step.
The roll display mode comprises horizontal rolling, various roll modes such as vertical scrolling.
Claims (2)
1. one kind low internal memory is realized the method for set-top box captions rolling, it is characterized in that: low internal memory realizes that the method for set-top box captions rolling adopts the character output function to export the roll titles of display machines top box, and the method for described drafting roll titles comprises the steps:
Step 01: the command information that receives roll titles content to display, character total length and roll display mode;
Step 02: calculate the original position of captions roll display in the viewing area, the stepping length of roll display and the step number of roll display according to the command information that receives;
Step 03: calculate content to display in each rolling display step, content displayed comprises the partial pixel in character or the character;
Step 04: adopt content to display in the character output function circulation read step 03, content to display in the output step display 03.
2. a kind of low internal memory according to claim 1 is realized the method for set-top box captions rolling, it is characterized in that: the method for content to display in the character output function circulation output step display 03 in the described step 04, it comprises the steps:
Step 041: read content to display in the analytical procedure 03, from character library, extract corresponding character pattern data, character pattern data is decomposed into horizontal pixel and vertical pixel output shows according to the pixel size of viewing area;
Step 042: by from left to right, from top to bottom ranks sequential scanning judges whether character display pixel of this pixel, then draws out the respective pixel point if any the character display pixel;
Step 043: shown that content circulation to display shows content to display in the next rolling display step in the rolling display step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010230129 CN101888508A (en) | 2010-07-19 | 2010-07-19 | Method for rolling subtitles of set-top box with low memory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010230129 CN101888508A (en) | 2010-07-19 | 2010-07-19 | Method for rolling subtitles of set-top box with low memory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101888508A true CN101888508A (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010230129 Pending CN101888508A (en) | 2010-07-19 | 2010-07-19 | Method for rolling subtitles of set-top box with low memory |
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| Country | Link |
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| CN (1) | CN101888508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102026033A (en) * | 2010-12-07 | 2011-04-20 | 福建新大陆通信科技股份有限公司 | Method for displaying Myanmar by set-top box (STB) |
| CN112242118A (en) * | 2019-07-16 | 2021-01-19 | 西安诺瓦星云科技股份有限公司 | Information scrolling display method, device and system |
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| JP2007300438A (en) * | 2006-04-28 | 2007-11-15 | Sharp Corp | Input/output device, video display system, input/output control method, input/output control program, and recording medium |
| CN101076077A (en) * | 2007-06-18 | 2007-11-21 | 中兴通讯股份有限公司 | Method, system and network for realizing scroll caption on IPTV set top box |
| CN101494747A (en) * | 2009-02-24 | 2009-07-29 | 山东泰信电子有限公司 | Method for displaying roll titles based on digital television set-top box |
| CN101635807A (en) * | 2009-08-06 | 2010-01-27 | 康佳集团股份有限公司 | Smooth scrolling method of characters of set-top box according to pixels |
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2010
- 2010-07-19 CN CN 201010230129 patent/CN101888508A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000115696A (en) * | 1998-10-06 | 2000-04-21 | Eisuke Chikayama | Television broadcasting temporary stoppage, fast forwarding and rewinding device or circuit |
| US20020085123A1 (en) * | 2000-12-15 | 2002-07-04 | Kenichiro Ono | Display control apparatus, display control method, display system and storage medium |
| JP2007300438A (en) * | 2006-04-28 | 2007-11-15 | Sharp Corp | Input/output device, video display system, input/output control method, input/output control program, and recording medium |
| CN101076077A (en) * | 2007-06-18 | 2007-11-21 | 中兴通讯股份有限公司 | Method, system and network for realizing scroll caption on IPTV set top box |
| CN101494747A (en) * | 2009-02-24 | 2009-07-29 | 山东泰信电子有限公司 | Method for displaying roll titles based on digital television set-top box |
| CN101635807A (en) * | 2009-08-06 | 2010-01-27 | 康佳集团股份有限公司 | Smooth scrolling method of characters of set-top box according to pixels |
Non-Patent Citations (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102026033A (en) * | 2010-12-07 | 2011-04-20 | 福建新大陆通信科技股份有限公司 | Method for displaying Myanmar by set-top box (STB) |
| CN102026033B (en) * | 2010-12-07 | 2013-02-06 | 福建新大陆通信科技股份有限公司 | Method for displaying Myanmar by set-top box (STB) |
| CN112242118A (en) * | 2019-07-16 | 2021-01-19 | 西安诺瓦星云科技股份有限公司 | Information scrolling display method, device and system |
| CN112242118B (en) * | 2019-07-16 | 2021-11-16 | 西安诺瓦星云科技股份有限公司 | Information scrolling display method, device and system |
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Application publication date: 20101117 |