CN102306079A - Screen display method, digital television receiving terminal and digital television system - Google Patents
Screen display method, digital television receiving terminal and digital television system Download PDFInfo
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Abstract
The embodiment of the invention discloses a screen display method which comprises the following steps of: reading characters used for screen display, performing superimposition process on the characters and video images of a digital television to form screen display data, and displaying the screen display data. The embodiment of the invention also discloses a digital television receiving terminal. By virtue of the method disclosed in the invention, the video character superimposition of the digital television is realized, and the user experience is improved.
Description
Technical field
The present invention relates to the digital television techniques field, relate in particular to a kind of screen display method, receiving terminal for digital television and digital television system.
Background technology
Receiving terminal for digital television comprises: set-top box, network protocol television, digital TV integrated machine, Digital Video Broadcasting Handheld or the like, can realize reception, the decoding function of digital television signal being user's display digit television video image.
The video character stack is that character (time character or ground point character) is superimposed in the video flowing, and character shows along with video displaying.The video character stack is widely used in the multimedia monitor system; Because the vision signal of switching in the multimedia monitor system is more; The operator is difficult to differentiate a certain image fast and comes wherefrom; Therefore normal mode with the dynamic character video; Stack ground point character on image; Like video camera or Chinese character place name, and together show with monitoring image.Existing receiving terminal for digital television does not possess the video character overlaying function; For example: can't realize the stack of time character; Thereby can't, the digital TV video frequency image, be unfavorable for improving user's experience degree when being provided for the user provides corresponding temporal information.
Summary of the invention
Embodiment of the invention technical matters to be solved is, a kind of screen display method, receiving terminal for digital television and digital television system are provided, and can realize the video character stack of Digital Television, improves user's experience degree.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of screen display method, comprising:
Read the character that is used for screen display;
Said character and digital TV video frequency image are carried out overlap-add procedure, form display data on the screen;
Show said display data on the screen.
Correspondingly, the embodiment of the invention also provides a kind of receiving terminal for digital television, comprising:
Read module is used to read the character that is used for screen display;
Laminating module, the character and the digital TV video frequency image that are used for said read module is read carry out overlap-add procedure, form display data on the screen;
Display module is used to the display data on the screen that shows that said laminating module forms.
Correspondingly, the embodiment of the invention also provides a kind of digital television system, comprising: above-mentioned receiving terminal for digital television.
Embodiment of the present invention embodiment has following beneficial effect:
The embodiment of the invention reads the character that is used for screen display, with the demonstration that superposes of said character and digital TV video frequency image, has realized the video character stack of Digital Television, has improved user's experience degree, has improved product competitiveness simultaneously.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously; Accompanying drawing in describing below only is some embodiments of the present invention; For those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of an embodiment of receiving terminal for digital television provided by the invention;
Fig. 2 is the structural representation of another embodiment of receiving terminal for digital television provided by the invention;
Fig. 3 is the structural representation of the embodiment of acquisition module provided by the invention;
Fig. 4 is the structural representation of the embodiment of memory module provided by the invention;
Fig. 5 is the structural representation of the embodiment of read module provided by the invention;
Fig. 6 is the structural representation of the embodiment of laminating module provided by the invention;
Fig. 7 is the process flow diagram of an embodiment of screen display method provided by the invention;
Fig. 8 is the process flow diagram of another embodiment of screen display method provided by the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
In the scheme that the embodiment of the invention provides, receiving terminal for digital television reads the character that is used for screen display, and this character and digital TV video frequency image are carried out overlap-add procedure, forms display data on the screen and shows; Thereby realized the video character stack of Digital Television, improved user's experience degree, improved product competitiveness simultaneously.
Wherein, the said character that is used for screen display can comprise: the time character, brief introduction () character or the like for example: programm name, program number etc. of point character, digital TV video frequency program.Obtain during the said character that is used for screen display can flow from the TS (Transport Stream, transport stream) that front-end server issues, also can manually input in the receiving terminal for digital television by the user.Except that specifying, among follow-up all embodiment of the present invention, all describe as the character that is used for screen display with the time character, receiving terminal for digital television carries out similar analysis to the processing that the processing procedure of other characters can the reference time character.
Wherein, Can increase screen display function in the receiving terminal for digital television; In telepilot, increase screen display simultaneously button is set; Whether manually the user can get into the relevant information that the layout setting screen display is set of digital TV set-top box through telepilot, and this relevant information comprises: whether show time, whether automatically acquisition time, the display format, the demonstration duration of time, the display location information of time or the like of input time, time; Digital TV set-top box can be according to the information of this setting; The order of generation screen display; The order of this screen display can comprise: whether show mode (obtaining automatically/manually input) that time, time obtains, the display format of time (for example: 2011-08-01-12:00:00, or 11-8-1-12:00:00 etc.), time demonstration duration (for example: 2 minutes, 3 minutes etc.), the display location information of time (for example: upper left, a left side is following, upper right, the coordinate information of bottom right etc. and correspondence); The order of this screen display is used for the control figure television receive terminal and carries out the screen display operation.This screen display order can comprise following field:
Whether IsDisplayTimeChar // 1bit shows the time character
Automatically whether AutoOrManual // 1bit acquisition time
DisplayPositionX // 8bit character is presented at the X coordinate in the video image
DisplayPositionY // 8bit character is presented at the Y coordinate in the video image
The current resolution of VideoResolution // 8bit (acquiescence 576i)
The current demonstration depth-width ratio example of AspectMode // 8bit (acquiescence 4:3)
Wherein, the receiving terminal for digital television of the embodiment of the invention can be terminals such as digital TV set-top box, network protocol television, digital TV integrated machine, Digital Video Broadcasting Handheld.Except that specifying, the receiving terminal for digital television described in follow-up all embodiment of the present invention, all index word TV set-top box.
In the digital television system that the embodiment of the invention provides; Comprise front-end server and receiving terminal for digital television; This receiving terminal for digital television inserts in the front-end server, is used for the TS stream that the receiving front-end server issues, and this TS stream is carried out rectification, decoding and broadcast.The digital TV video frequency image that the TS that this receiving terminal for digital television is used for that also front-end server is issued flows carries out the character overlap-add procedure, forms display data on the screen and shows.
To combine accompanying drawing 1-accompanying drawing 6 below, the receiving terminal for digital television that the embodiment of the invention is provided describes in detail, and this receiving terminal for digital television can be applicable in the digital television system that the invention described above embodiment provides.
See also Fig. 1, be the structural representation of an embodiment of receiving terminal for digital television provided by the invention; This receiving terminal for digital television comprises:
Read module 10 is used to read the character that is used for screen display.
Read module 10 can be the OSD in the digital TV set-top box (On Screen Display, on-screen display objects) chip, and this OSD chip can send read signal READ automatically, reads the character that is used for screen display.
The character that is used for screen display that laminating module 20 reads the OSD chip; Carry out overlap-add procedure with the digital TV video frequency image; Form display data on the screen, the process of this overlap-add procedure can not given unnecessary details at this with reference to the overlap-add procedure process of video layer and OSD layer in the existing digital television techniques.This digital TV video frequency image is TS stream that receiving terminal for digital television issues the front-end server video streaming image that the back obtains of decoding.
See also Fig. 2, be the structural representation of another embodiment of receiving terminal for digital television provided by the invention; This receiving terminal for digital television comprises: read module 10, laminating module 20 and display module 30.Further, this receiving terminal for digital television also comprises:
See also Fig. 3, be the structural representation of the embodiment of acquisition module provided by the invention; In the present embodiment, acquisition module 40 obtained for second time automatically from the TS stream that front-end server issues, and then acquisition module 40 comprises:
TS flows receiving element 401, is used for the TS stream that the receiving front-end server issues.
After 402 pairs of TS streams of separative element carry out separated in synchronization, can obtain to issue second time of said TS stream, this second time can be used for screen display; Can also obtain digital TV video frequency stream, this digital TV video frequency stream needs to carry out processing such as rectification, decoding through receiving terminal for digital television, forms the digital TV video frequency image that can be used for screen display.The separated in synchronization process of separative element 402 can not given unnecessary details at this with reference to prior art.
See also Fig. 4, be the structural representation of the embodiment of memory module provided by the invention; This memory module 50 comprises:
Converting unit 501 is used for the requirement according to OSD, and the very first time or said second time that said acquisition module 40 obtains are changed the formation time character.
Converting unit 501 need be changed the very first time or second time that acquisition module 40 obtains, the formation time character, and this time character can be discerned by the OSD chip in the receiving terminal for digital television.
Character memory 502 is used to store the time character that said converting unit 501 forms, and triggers said timer initiation timing operation.
Character memory 502 can be electricity erasable memorizer (Flash Memory); Flash Memory can support online programming; Allow chip under the situation of not leaving circuit board; Implement to solidify and erase operation; Can repeat erasable more than 100,000 times; The character that assurance is stored in wherein can change on demand, and the data power down of storage is not lost.Character memory 502 can dot matrix mode store the time character that converting unit 501 forms, for example: with 24*32 dot matrix character storage time.In the time of character memory character 502 storage time, i.e. the timer of the triggered digital television receive terminal operation that picks up counting.
Updating block 503 is used for the timing operation according to said timer, and the time character in the said character memory 502 is carried out real-time update.
Character memory 502 can be Flash Memory, allows the time character of its storage is changed on demand, and 503 timing according to timer of updating block are operated, and are used for the time character to be superimposed of screen display in the real-time update character memory 502.
See also Fig. 5, be the structural representation of the embodiment of read module provided by the invention; This read module 10 comprises:
Receiving terminal for digital television sends the screen display order to order receiving element 101, and this screen display order generates screen display information being set based on the user.
Reading unit 102, the screen display that is used for receiving according to said order receiving element 101 is ordered, in real time time for reading character from said character memory 502.
See also Fig. 6, be the structural representation of the embodiment of laminating module provided by the invention; This laminating module 30 comprises:
Position determination unit 301 is used for the display location information according to the said time, confirms the position of said time character in said digital TV video frequency image.
Can comprise in the screen display order of receiving terminal for digital television: the display location information of time, for example: be positioned at the top-left position of digital TV video frequency image, left upper/lower positions, upper-right position, position, bottom right, and the corresponding coordinate in each position, or the like.Position determination unit 301 is confirmed the position of time character in the digital TV video frequency image to be superimposed that read module 10 reads in real time according to the display location information of the time in this screen display order.
Superpositing unit 302 is used for the said time character that reads in real time is superimposed to the position that position determination unit described in the said television video image 301 is confirmed, forms display data on the screen.
The process of the overlap-add procedure of superpositing unit 302 can not given unnecessary details at this with reference to the overlap-add procedure process of video layer and OSD layer in the existing digital television techniques.
Need to prove that in the receiving terminal for digital television that the embodiment of the invention provides, each module all can be carried out the screen display operation under the screen display order control of receiving terminal for digital television.This screen shows the modules and the control command in addition to perform the screen display data (video characters superimposed on an image of time) of the display, the above control can also include, for example: display commands may be included in the display of the time length from the first to show The on screen display data in a time point when the display time reaches the time, the screen displays the command reading module 10 can control the stop time of the read character, then control module 20 stops the time overlay superimposed characters, then for the user side, the display is as follows: in a period of time (the time within the display time), the user can view the digital television video image time, after which time the video image from the digital television disappears longer displayed in the video image in digital television ; and so on.
The receiving terminal for digital television of the embodiment of the invention reads the character that is used for screen display; With the demonstration that superposes of said character and digital TV video frequency image; Realize the video character stack of Digital Television, improved user's experience degree, improved product competitiveness simultaneously.
Corresponding to any receiving terminal for digital television in the above-mentioned accompanying drawing 1-accompanying drawing 6; To combine accompanying drawing 7-accompanying drawing 8 below; The screen display method that the embodiment of the invention is provided describes in detail, and above-mentioned receiving terminal for digital television can be in following screen display method.
See also Fig. 7, be the process flow diagram of an embodiment of screen display method provided by the invention; This method comprises:
S101 reads the character that is used for screen display.
Among the step S101, can adopt the OSD chip in the digital TV set-top box, this OSD chip can send read signal READ automatically, reads the character that is used for screen display.
S102 carries out overlap-add procedure with said character and digital TV video frequency image, forms display data on the screen.
Among the step S102; The character that is used for screen display with the OSD chip reads carries out overlap-add procedure with the digital TV video frequency image, forms display data on the screen; The process of this overlap-add procedure can not given unnecessary details at this with reference to the overlap-add procedure process of video layer and OSD layer in the existing digital television techniques.This digital TV video frequency image is TS stream that receiving terminal for digital television issues the front-end server video streaming image that the back obtains of decoding.
S103 shows said display data on the screen.
Among the step S103; The display screen video data; In the procedure for displaying; The character that is superimposed to the digital TV video frequency image together shows in company with this digital TV video frequency image; Help the information (as: temporal information) that the more accurate easier acquisition character of user is characterized, thereby help improving user's experience degree.
See also Fig. 8, be the process flow diagram of another embodiment of screen display method provided by the invention; This method comprises:
S201 obtains the very first time of user's input, or from the TS stream that front-end server issues, obtained for second time.
Among the step S201, can obtain the time that is used for screen display through following dual mode, one of which is: the very first time of obtaining user's input.Can when the user carries out being provided with of screen display function, obtain the very first time that is used for screen display that the user manually imports, also can receive the screen display command, therefrom obtain the very first time that the user manually imports.It two is: from the TS stream that front-end server issues, obtained for second time.Front-end server generally can add the current time that issues TS stream in the respective field of this TS stream when issuing TS stream, can from the respective field of this TS stream, obtain second time that is used for screen display.Step S201 can carry out under the screen display order control of receiving terminal for digital television.
Among the step S201, from the TS stream that front-end server issues, obtained for second time, specifically comprise:
The TS stream that A, receiving front-end server issue;
B, said TS stream is carried out separated in synchronization, obtain to issue second time of said TS stream.
In this step, TS stream carried out separated in synchronization after, can obtain to issue second time of said TS stream, this second time can be used for screen display; Can also obtain digital TV video frequency stream, this digital TV video frequency stream needs to carry out processing such as rectification, decoding through receiving terminal for digital television, forms the digital TV video frequency image that can be used for screen display.This separated in synchronization process can not given unnecessary details at this with reference to prior art.
After step S201 gets access to the very first time or second time, need the said very first time of storage or said second time, specifically comprise:
S202 according to the requirement of OSD, changes the formation time character to the said very first time or said second time of obtaining.
Among the step S202, the very first time or second time of obtaining need be changed, the formation time character, this time character can be discerned by the OSD chip in the receiving terminal for digital television.
S203 is stored to said time character in the character memory, and the triggering timing device starts the timing operation.
Among the step S203; Can adopt electricity erasable memorizer (Flash Memory); Flash Memory can support online programming; Allow chip under the situation of not leaving circuit board; Implement to solidify and erase operation; Can repeat erasablely more than 100,000 times, guarantee that the character be stored in wherein can change on demand, and the data power down of storage not lost.Among the step S203, mode character storage time that can dot matrix, for example: with 24*32 dot matrix character storage time.Storage time is character the time, the operation that picks up counting of the timer of triggered digital television receive terminal.
S204 according to the timing operation of said timer, carries out real-time update to the time character in the said character memory.
Storage time, the character memory of character can be Flash Memory; Permission changes the time character of its storage on demand; Among the step S204,, be used for the time character to be superimposed of screen display in the real-time update character memory according to the timing operation of timer.
In the present embodiment, step S202-step S204 can be for storing the concrete refinement step of the said very first time or said second time.
S205 receives the screen display command.
Among the step S205, the screen display order that the receiving digital television receiving terminal sends, this screen display order generates screen display information being set based on the user.
S206 is according to said screen display order, time for reading character from said character memory in real time.
Step S205 receives the screen display order; Can trigger step S206 according to this screen display order; Time for reading character from character memory in real time, because the time character in the character memory is in real-time update, the time character that reads in real time also can constantly change.
In the present embodiment, step S205-step S206 can be the concrete refinement step of step S101 embodiment illustrated in fig. 7.
S207 according to the display location information of said time, confirms the position of said time character in said digital TV video frequency image.
Can comprise in the screen display order of receiving terminal for digital television: the display location information of time, for example: be positioned at the top-left position of digital TV video frequency image, left upper/lower positions, upper-right position, position, bottom right, and the corresponding coordinate in each position, or the like.Among the step S207,, confirm the position of time character in the digital TV video frequency image to be superimposed of reading in real time according to the display location information of the time in this screen display order.
S208 is superimposed to the position of confirming in the said television video image with the said time character that reads in real time, forms display data on the screen.
The process of the overlap-add procedure of step S208 can not given unnecessary details at this with reference to the overlap-add procedure process of video layer and OSD layer in the existing digital television techniques.
In the present embodiment, step S207-step S208 can be the concrete refinement step of step S102 embodiment illustrated in fig. 7.
S209 shows said display data on the screen.
In the present embodiment, step S209 can not give unnecessary details at this with reference to step S103 embodiment illustrated in fig. 7.
The embodiment of the invention reads the character that is used for screen display, with the demonstration that superposes of said character and digital TV video frequency image, has realized the video character stack of Digital Television, has improved user's experience degree, has improved product competitiveness simultaneously.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosed only is preferred embodiment of the present invention; Certainly can not limit the present invention's interest field with this; One of ordinary skill in the art will appreciate that all or part of flow process that realizes the foregoing description; And, still belong to the scope that invention is contained according to the equivalent variations that claim of the present invention is done.
Claims (13)
1. a screen display method is applied to it is characterized in that in the digital television system, comprising:
Read the character that is used for screen display;
Said character and digital TV video frequency image are carried out overlap-add procedure, form display data on the screen;
Show said display data on the screen.
2. the method for claim 1 is characterized in that, the said character that is used for screen display comprises: the time character, and said reading before the character that is used for screen display also comprises:
Obtain the very first time of user's input, or from the transport stream TS stream that front-end server issues, obtained for second time;
The said very first time or said second time that storage is obtained.
3. method as claimed in claim 2 is characterized in that, second time of obtaining comprised the said TS that issues from front-end server flowed:
The TS stream that the receiving front-end server issues;
Said TS stream is carried out separated in synchronization, obtain to issue second time of said TS stream.
4. like claim 2 or 3 described methods, it is characterized in that, the said very first time that said storage is obtained or said second time, comprising:
According to the requirement of on-screen display objects OSD, the said very first time or said second time of obtaining are changed the formation time character;
Said time character is stored in the character memory, and the triggering timing device starts the timing operation;
According to the timing operation of said timer, the time character in the said character memory is carried out real-time update.
5. method as claimed in claim 4 is characterized in that, the said character that is used for screen display that reads comprises:
Receive the screen display command;
According to said screen display order, time for reading character from said character memory in real time.
6. method as claimed in claim 5 is characterized in that, said screen display order comprises: the display location information of time;
Said said character and digital TV video frequency image are carried out overlap-add procedure, form display data on the screen, comprising:
According to the display location information of said time, confirm the position of said time character in said digital TV video frequency image;
The said time character that reads in real time is superimposed to the position of confirming in the said television video image, forms display data on the screen.
7. a receiving terminal for digital television is characterized in that, comprising:
Read module is used to read the character that is used for screen display;
Laminating module, the character and the digital TV video frequency image that are used for said read module is read carry out overlap-add procedure, form display data on the screen;
Display module is used to the display data on the screen that shows that said laminating module forms.
8. receiving terminal for digital television as claimed in claim 7 is characterized in that, the said character that is used for screen display comprises: the time character; Said receiving terminal for digital television also comprises:
Acquisition module is used to obtain the very first time that the user imports, and perhaps from the TS stream that front-end server issues, obtains for second time;
Memory module is used to store the said very first time or said second time that said acquisition module obtains.
9. receiving terminal for digital television as claimed in claim 8 is characterized in that, said acquisition module is used for obtaining for second time from the TS stream that front-end server issues, and said acquisition module comprises:
TS flows receiving element, is used for the TS stream that the receiving front-end server issues;
Separative element is used for the TS stream that TS stream receiving element receives is carried out separated in synchronization, obtains to issue second time of said TS stream.
10. like claim 8 or 9 described receiving terminal for digital television, it is characterized in that, also comprise: timer; Said memory module comprises:
Converting unit is used for the requirement according to OSD, and the very first time or said second time that said acquisition module obtains are changed the formation time character;
Character memory is used to store the time character that said converting unit forms, and triggers said timer initiation timing operation;
Updating block is used for the timing operation according to said timer, and the time character in the said character memory is carried out real-time update.
11. receiving terminal for digital television as claimed in claim 10 is characterized in that, said read module comprises:
The order receiving element is used to receive the screen display command;
Reading unit, the screen display that is used for receiving according to said order receiving element is ordered, in real time time for reading character from said character memory.
12. receiving terminal for digital television as claimed in claim 11 is characterized in that, said screen display order comprises: the display location information of time;
Said laminating module comprises:
Position determination unit is used for the display location information according to the said time, confirms the position of said time character in said digital TV video frequency image;
Superpositing unit is used for the said time character that reads in real time is superimposed to the position that position determination unit described in the said television video image is confirmed, forms display data on the screen.
13. a digital television system comprises front-end server, it is characterized in that, also comprises: like each described receiving terminal for digital television of claim 7-12.
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| CN112135073A (en) * | 2020-09-07 | 2020-12-25 | 合肥富煌君达高科信息技术有限公司 | Image character superposition method based on FPGA |
| CN112135073B (en) * | 2020-09-07 | 2021-11-30 | 合肥富煌君达高科信息技术有限公司 | Image character superposition method based on FPGA |
| CN112235458A (en) * | 2020-10-14 | 2021-01-15 | 珠海格力电器股份有限公司 | Device sleep control method, device and computer readable medium |
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Application publication date: 20120104 |