CN1264352C - Method for controlling expanded text table information display on electronic program guide screen - Google Patents
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Abstract
A method for displaying an ETT (expanded text table) information controlled on an EPG (electronic program guide) screen of a digital TV, is capable of making an audience conveniently determine exist the ETT information included in an EPG information. The invention detects an ETT packet by determining packet identifiers (PID) of all packets received from a set-top box, and display exist of the ETT packet only for a detected EPG program of the ETT packet. Accordingly, the audience can determine whether the ETT information is existed only by viewing the EPG screen.
Description
The application requires the priority of the korean patent application No.2003-9911 that submits on February 17th, 2003, and it openly is incorporated herein by reference.
Technical field
The present invention relates generally to the method that ETT (expanded text table) information on a kind of EPG (electronic program guides) screen that is controlled at Digital Television shows, more specifically, relate to the method that expanded text table (ETT) information on a kind of epg screen that is controlled at digital TV shows, can make spectators determine in electronic program guides (EPG) information, whether to comprise expanded text table (ETT) information easily.
Background technology
Usually, in digital TV broadcasting, all signals that are sent to family and television set from the broadcasting station are digital signals, thereby compare with analogue system, and clearly picture quality and sound quality true to nature are provided.Digital broadcasting transmits according to carried out compression and multiplexing program as MPEG (Motion Picture Experts Group) standard etc.
In mpeg standard, MPEG-2 transmits at advanced television broadcasting and the various data of satellite broadcasting and the international standard of video.
Stipulated should be packaged as bit stream at the various signals of moving image, sound and other additional service information in MPEG-2, described bit stream is divided into program stream and transmits stream.
By utilizing the multimedia communication of MPEG-2, transmitter is loaded into many information to transmit in the stream and to it and transmits, and receiver has comprised that by utilization the transmission stream of information resolves information, extracts the information that is loaded.Then, the information that is extracted is decoded.
Transport stream packet is drawn together the broadcast program guide information of each channel and time and the broadcast program of digital TV broadcasting.In this case, be called as electronic program guides (EPG) information by being included in the programme information that service is provided in such digital broadcast signal.
The definition of electronic program guides (EPG) and SI (system information) is PSIP (program and a system information protocol).
Program and system information protocol (PSIP) are ATSC (Advanced Television Systems Committee) standards at land and cable digital broadcasting, definition is used for by resolving with MPEG-2 method information encoded, the various information relevant with program are provided, as in following document, being summarized: the ATSC normative document A/65B " Program andSystem Information Protocol for Terrestrial Broadcast andCable (Revision B) " (on March 18th, 2003) that proposes by Advanced Television Systems Committee, and recommend to carry out file A/69 " Program an System InformationProtocol Implementation Guidelines for Broadcasters " (on June 25th, 2002) by the ATSC that Advanced Television Systems Committee proposes.
Program and system information protocol (PSIP) are made up of many tables, be used to receive and dispatch according to AC-3 audio frequency and MPEG-2 video format and A/V (audio/video) data that produce, and the channel and the programme information that transmit each broadcasting station.
Simultaneously, program and system information protocol (PSIP) can be by selecting to be used for the channel and the electronic program guides (EPG) of broadcasting channel, support to carry out the major function of the A/V service of required broadcasting, that is, and and the additional function of broadcasting guide service.At this moment, channel information at channel selection transmits by VCT (virtual channel table) with packet identifier (PID) number information that is used for the A/V reception, and the electronic program guides of the broadcast program of each channel (EPG) information transmits by EIT (Event Information Table) respectively.Here, EIT has title as the information relevant with the incident of virtual channel, zero-time etc.In this case, an incident is mainly represented typical TV program.
Electronic program guides (EPG) signal is the channel program information signal that transmits with broadcast singal.The channel program information that is loaded in electronic program guides (EPG) signal comprises as simple information (expanded text table (ETT)) such as program category, title, airtimes.The broadcast singal that receives is separated with electronic guide (EPG) information, and be demodulated into primary signal.That is, be the primary signal type with signal and demodulates information,, it is changed into suitable type owing to be not suitable for showing broadcast singal and electronic program guides (EPG) information that receives.
Come the event information of separate electronic program guide (EPG) information according to time and broadcasting channel, then it is stored in the memory.To from memory, read out electronic program guides (EPG) information, and response shows control command, this electronic program guides (EPG) information is shown as electronic program guides (EPG) screen on the screen.
Expanded text information (ETT) information is reclassified as channel expanded text message (ETM) information and incident expanded text message (ETM) information.Channel expanded text message (ETM) information comprises the cutline of each channel, and incident expanded text message (ETM) information comprises each program-associated information with channel.And, from each physical channel (PC), receive expanded text table (ETT) information that comprises channel expanded text message (ETM) and incident expanded text message (ETM) information, it is stored in the internal storage of digit broadcasting receiver, and, show selectively according to the channel change.
Promptly, when user's inputting channel when watching and listen to changes keying signal and changes channel, in predetermined guide screen (for example, channel banner (banner) screen) go up the configuration channel information (channel ETM) relevant with the change channel and with current broadcasting program relevant information (incident ETM), and scheduled time that demonstration is preset on screen.Therefore, the user can be with reference to the channel that changes and the programme information of corresponding channel.
Simultaneously, in program and system information protocol (PSIP) information, transmit expanded text table (ETT) information, and it is stored in the internal storage of digital broadcasting transmitter with sizable size.In this case, when showing expanded text table (ETT) information, according to user (spectators') selection, do not extract whole expanded text table (ETT) information and only extract information needed, and it is presented on the predetermined guide screen.
That is, the user can be provided with the banner screen items of the information content that comprises the banner screen that is made of expanded text table (ETT) information selectively and be provided with whether show this information.For example, the user is provided with the information type (brief or details) of the banner screen of demonstration and during channel changes, according to expanded text table (ETT) information, whether shows the banner screen.Then, digital broadcasting transmitter only extracts information needed in the expanded text table from be stored in memory (ETT) information selectively according to the banner screen message that is provided with by the user, and shows the information of being extracted.
Be arranged on general digital TV and go up the method that shows electronic program guides (EPG) information, electronic program guides (EPG) screen display of broadcast platform, airtime and program title.Like this, in order to see expanded text table (ETT) information content of the specific program in the electronic program guides (EPG), can watch expanded text table (ETT) information that is included in the program by the specific program title of clicking in (selection) shown electronic program guides (EPG).
Here, by on an electronic program guides (EPG) screen, comprising program title and details (expanded text table (ETT) information), help to realize the present invention.But the screen configuration becomes complicated, and spectators can easily confirm information needed.Therefore, in order to overcome this defective, used by clicking the method that (selection) program title links expanded text table (ETT) information and program title and show expanded text table (ETT) information on the TV screen.
Yet, using above-mentioned existing electronic program guides (EPG) display packing, which program spectators can't discern when watching electronic program guides (EPG) screen comprises expanded text table (ETT) information.
At this moment, spectators click the existence that program is checked expanded text table (ETT) information selectively, have only and just use expanded text table (ETT) information when finding and shown expanded text table (ETT) information.Therefore, when having many programs, require a great deal of time and confirm the existence of expanded text table (ETT) information.
Summary of the invention
Therefore, spectators the objective of the invention is to propose the method that expanded text table (ETT) information on a kind of epg screen that is controlled at Digital Television shows, so that can easily confirm whether to exist expanded text table (ETT) information that is included in the electronic program guides (EPG).
To achieve these goals, according to one embodiment of present invention, the method that expanded text table (ETT) information on a kind of electronic program guides (EPG) screen that is controlled at Digital Television shows has been proposed, said method comprising the steps of:, detect whether there is expanded text table (ETT) grouping by the grouping that retrieval receives; If after testing result, there is expanded text table (ETT) grouping, confirm to comprise the program of expanded text table (ETT) grouping; Provide expanded text table (ETT) to have information to electronic program guides (ETP) program that comprises expanded text table (ETT) grouping; And, if providing after there is information in expanded text table (ETT), request electronic program guides (EPG) starting command is then controlled electronic program guides (EPG) and is carried out, and has shown wherein that to show there is electronic program guides (EPG) screen of information in expanded text table (ETT).Here, detect expanded text table (ETT) grouping by the packet identifier (PID) of confirming the grouping that all receive.
According to another embodiment of the present invention, by carrying out painted to electronic program guides (EPG) program that comprises expanded text table (ETT) information, perhaps the character information of the existence by will being used to notify expanded text table (ETT) information is inserted into the precalculated position of electronic program guides (EPG) program that comprises expanded text table (ETT) information, exists information to offer electronic program guides (EPG) program expanded text table (ETT).
According to another embodiment of the present invention, by adding specific icon for electronic program guides (EPG) program that comprises expanded text table (ETT) information, perhaps handle, exist information to offer electronic program guides (EPG) program expanded text table (ETT) by electronic program guides (EPG) program that comprises expanded text table (ETT) information being carried out two dimensional image.In addition, handle, provide expanded text table (ETT) to have information by electronic program guides (EPG) program that comprises expanded text table (ETT) information being carried out 3-D view.
Description of drawings
When considering that wherein similar reference symbol is represented the accompanying drawing of same or analogous assembly, with reference to following detailed description, the present invention is more comprehensively estimated and many advantages will become clearer, and can be better understood, wherein:
Fig. 1 shows the system layout of typical general numeral TV;
Fig. 2 is the exemplary plot of exemplary electronic program guide (EPG);
Fig. 3 shows the schematic diagram of typical expanded text table (ETT) form;
Fig. 4 shows the operational flowchart of the method that shows according to expanded text table (ETT) information on the epg screen embodiment of the invention, that be used to be controlled at digital TV;
Fig. 5 shows electronic program guides (EPG) menu screen of an embodiment who has used electronic program guides of the present invention (EPG) screen.
Embodiment
Fig. 1 is the system construction drawing of typical general numeral TV, is used for realizing and expresses as electronic program guides (EPG) etc. being included in many information of program and system information protocol (PSIP), and show electronic program guides (EPG) on screen.
As shown in Figure 1, typical general numeral TV comprises: broadcast singal receives and demodulating unit 100, is used for receiving and demodulation broadcast singal and electronic program guides (EPG) information; Buffer 110 is used to store demodulation electronic program guides (EPG) information; Signal processor 120 is used for electronic program guides (EPG) information that is stored in buffer 110 is carried out functional separation; Memory 130 is used for store electrons program guide (EPG) information functionally; Display 140 is used for showing electronic program guides (EPG) information that is stored in memory 130 on screen; Input unit 150 is used for the user and selects electronic program guides (EPG) to show options button and programme information; And controller 160, control store has the read/write of the memory 130 of electronic program guides (EPG) information to handle, and the demonstration of control electronic program guides (EPG) information.
The system configuration of the general digital TV that as above is configured will simply be described below.
Electronic program guides (EPG) signal is the channel program information signal that transmits with broadcast singal.The channel program information that is increased in electronic program guides (EPG) signal comprises as simple information such as program category, title, airtimes.Broadcast singal receives and demodulating unit 100 receiving broadcast signals and electronic program guides (EPG) information, and it is separated, and is the primary signal that is suitable for showing with broadcast singal and electronic program guides (EPG) demodulates information then.
In this case, when spectators import electronic program guides (EPG) starting command by using input unit 150, so that when using electronic program guides (EPG) information, by the demonstration control command of controller 160, show electronic program guides (EPG) information that from memory 130, reads by display 140.
Fig. 2 is the exemplary plot of exemplary electronic program guide (EPG) screen.Electronic program guides shown in Figure 2 (EPG) screen is the EPG that 6:11 confirms in afternoon on the 8th April in 2000.Here, " Chan " represents virtual channel, " title " expression broadcasting station, and remainder is the fixed time broadcast program of each broadcasting station.In the drawings, term STT is meant system time table and has listed date and time, and term EIT-0 is meant and the corresponding Event Information Table of Promgramming of working as first three (3) hours period.Usually, Event Information Table (EIT) is program and the system information protocol table that has the program scheduling information (title, zero-time etc.) at each virtual channel; Notice that term program and incident are synonyms.
The PSIP table of configuration electronic program guides (EPG) comprising: STT (system time table); MGT (main guide tab); VCT (virtual channel table) constitutes by the ID that is included in each information table in program and system information protocol (PSIP) information, the size that is included in each information table in the physical channel and many VC (virtual channel), the title that is present in the many channels in the frequency and channel, modulator approach and with the id information of the corresponding transmission stream of channel; Event Information Table (EIT); RRT (stepped zone table) is used to transmit this locality and the relevant information of consulting key element (consultation organ) with program grade; Optionally expanded text table (ETT) comprises channel ETM (expanded text message) information of the explanation with corresponding channel and the incident ETM information that comprises the explanation of respective program; PAT (program correlation table); And PMT (Program Map Table).
In order to watch expanded text table (ETT) information that is included in electronic program guides (EPG) information, if there is optional expanded text table (ETT) information, then can be by clicking the interior program names of electronic program guides (EPG) information of (selection) oneself demonstration, obtain expanded text table (ETT) information included in the program (that is the rendition list).Note, in the example of Fig. 2, do not exist to offer the visual indication user, that be used for representing to exist expanded text table (ETT) for any program.
Fig. 3 shows the schematic diagram of typical expanded text table (ETT) form.As shown in Figure 3, expanded text table (ETT) form is divided into: 9 byte expansion text table (ETT) headers part, 4 byte ETM_id (expanded text message id) message part, predetermined bite (M) ETM (expanded text message) are partly and 32 (32 cyclic redundancy check (CRC)) message parts of 4 byte CRC.For example, when the spectators that show EPG of Fig. 2 have selected to comprise the program of expanded text table (ETT) information, with presented event expanded text message (ETM).
Describe preferred embodiment according to the method for the demonstration of visual indicators on electronic program guides (EPG) screen of the present invention, as to be controlled at Digital Television (DTV) referring now to accompanying drawing, described visual indicators is represented expanded text table (ETT) information (also being called as expanded text message (ETM)).That is, be used for the demonstration of method there is the visual indication of expanded text table (ETT) in to(for) the TV program of the unit of the electronic program guides that is listed in Digital Television (DTV) (EPG) screen.
Used the set-top box that system of the present invention is mounted in the place ahead of shown in Figure 1 general TV TV system, and the microprocessor of electronic program guides (EPG) performance in the particularly whole controller top box.Owing in general digital TV system as shown in Figure 1, realize the structure of set-top box usually,, omit detailed description to its structure and operation for fear of repetition.
Below, before explaining the preferred embodiments of the present invention, notion of the present invention is described simply.
In digital TV system as shown in Figure 1, shown electronic program guides (EPG) screen has only shown broadcasting station, airtime and program title simply.Therefore, spectators can't be identified in whether comprise expanded text table (ETT) information in the program.In addition, in order to confirm the existence of expanded text table (ETT) information, spectators must click the title of the program of all expectations in (selection) electronic program guides (EPG) one at a time.Therefore, this gives and confirms that expanded text table (ETT) information has caused great inconvenience.
Like this, the present invention detects expanded text table (ETT) grouping by the packet identifier (PID) of all groupings of confirming to receive from set-top box, and, show the indication that expanded text table (ETT) information exists only at electronic program guides (EPG) program that detects expanded text table (ETT) grouping.Therefore, the user can confirm easily whether expanded text table (ETT) information exists only by watching electronic program guides (EPG) screen.
Here, packet identifier (PID) shows each sign that offers the grouping in the multiplexing transmission stream (TS).When the signal to each channel in the digital broadcasting carries out multiplexing and utilize a transmission path to transmit signal after multiplexing,, each channel signals is packed by compressing separately.Like this, multiplexing by carrying out, transmit these groupings according to the mode that transmits stream (TS).In this case, to providing identical packet identifier (PID), will divide into groups and the grouping of other channels is distinguished with the corresponding grouping of specific channel.Like this, when distinguishing grouping by specific I D is provided according to each channel and when transmitting, receiver is only selected (demultiplexing) desired channel, and abandoned other groupings by utilizing the packet ID of corresponding channel from multiplexing transmission stream (TS).
Following table 1 is MGT (a main guide tab), promptly disposes the form of program and system information protocol (PSIP).
Table 1
| The grammer of MGT table | Byte | Bit | Form or explanation |
| MGT | 9 | 9*8 | The MGT head |
| tables_defined | 16 | The quantity of showing in the circulation (6-370) |
At each table
| table_type | 16 | 0x0000:TVCT has current_next_indicator=1 0x0001:TVCT and has current_next_indicator=0 0x0002:CVCT and have current_next_indicator=1 0x0003:CVCT and have current_next_indicator=1 0x0004: channel ETT 0x0100-0x017F:EIT-0 is to EIT-127 0x0200-0x027F: event ETT-0 to event ETT-127 0x0301-0x03FF: the RRT with stepped zone 1-255 | ||
| Reserved | 3 | .111′ | ||
| table_type PID | 13 | The PID of table_type in the above-mentioned field | ||
| Reserved | 3 | .111′ | ||
| table_type_ver sion_number | 5 | Must be identical with the version number in the | ||
| number_bytes | ||||
| 32 | The total amount of byte that is used for this table | |||
| Reserved | 4 | ‘1111′ | ||
| table_type_des criptors_length | 12 | The total length of event descriptor (byte) | ||
| | D1 | 8*D1 | Descriptive data | |
| Reserved | 2 | 4 | .1111′ | |
| descriptors_len gth | 12 | The total length of event descriptor (byte) | ||
| | D2 | 8*D2 | Descriptive data | |
| CRC_32 | 4 | 32 | 32 cyclic redundancy check (CRC) |
This main guide tab (MGT) comprises the information of closing with all programs and system information protocol (PSIP) epiphase.
Simultaneously, main guide tab (MGT) comprises version number, table size and has disposed program and the table packet identifier of the form of system information protocol (PSIP) (PID).
(MGT) monitors to main guide tab, can know whether the content of the form of configuration program and system information protocol (PSIP) changes.Therefore, main guide tab (MGT) has been brought into play important effect in program and system information protocol (PSIP).Like this, main guide tab (MGT) always has base_PID (0x1FFB), and by set-top box the main guide tab (MGT) that always has base_PID is resolved.
In main guide tab (MGT), described and the corresponding packet identifier of expanded text table (ETT) (PID), and always in set-top box, main guide tab (MGT) has been resolved.Therefore, can confirm expanded text table (ETT) PID (packet identifier) that main guide tab (MGT) is interior.
Fig. 4 shows the operational flowchart of the method that shows according to expanded text table (ETT) information on electronic program guides (EPG) screen of the present invention, as to be used to be controlled at DTV.
As shown in Figure 4, said method comprising the steps of: the grouping that receives by retrieval detects whether there is expanded text table (ETT) grouping (step 201,202); If after the testing result of step " 202 ", there is expanded text table (ETT) grouping, confirm that then TV (TV) program (perhaps virtual (TV) channel) comprises expanded text table (ETT) grouping (step 203); When by viewer request electronic program guides (EPG) starting command, show electronic program guides (EPG) screen, and shown electronic program guides (EPG) screen, with the corresponding EPG of TV program (perhaps channel) unit that comprises expanded text table (ETT) grouping in show that there is information (step 204) in expanded text table (ETT); And when spectators have selected (click) visual indicators by use as remote controller (not shown) etc., control electronic program guides (EPG) and show expanded text table (ETT) information, be i.e. expanded text message (ETM).
To more completely describe the present invention below, be used to be controlled at the method that expanded text table (ETT) information on electronic program guides (EPG) screen of Digital Television (DTV) shows according to above-mentioned configuration.
The microprocessor of set-top box (also not shown) receives broadcast packe (step 201), and confirms whether to exist expanded text table (ETT) grouping by the grouping that the transmission that detection receives is flowed in (TS).Promptly, comprise packet identifier (PID) owing to realize all groupings of electronic program guides (EPG), and at each grouping, packet identifier (PID) has unique value, therefore, by utilize the packet identifier (PID) in all groupings that software certification receives in set-top box, can detect expanded text table (ETT) grouping.
For example, MPEG-2 TS grouping can comprise basic PID 0x1FFB at table MGT, STT, RRT and VCT, at the PID lx1FD0 of EIT-0 and at the PID 0x1BA0 of ETT-0.
Then, confirm which program (perhaps channel) comprises expanded text table (ETT) grouping (step 203).In other words, the program that comprises expanded text table (ETT) is distinguished.
In order spectators or set-top box users easily to be confirmed be included in the information in the expanded text table (ETT) in electronic program guides (EPG) content, expanded text table (ETT) is existed information to offer to have listed the unit (10 among Fig. 5) of the EPG screen of the program (" DinoWorld " among Fig. 5) that comprises expanded text table (ETT).(step 204).
Here, by carrying out painted to electronic program guides (EPG) program cells that comprises expanded text table (ETT) information, perhaps, provide expanded text table (ETT) to have information by adding specific icon for electronic program guides (EPG) program cells that comprises expanded text table (ETT) information.
In addition, can provide expanded text table (ETT) to have information by electronic program guides (EPG) program cells that comprises expanded text table (ETT) information being carried out two dimension or three-dimensional image processing.And, the character information (seeing the ETT-0 of Fig. 5) of existence that can be by will being used for notifying expanded text table (ETT) information is inserted into the precalculated position of electronic program guides (EPG) program cells that comprises expanded text table (ETT) information, provides expanded text table (ETT) to have information.
Can use the said method that expanded text table (ETT) information is provided individually, perhaps when needs, can the various methods that provide of integrated application.For example, can carry out paintedly, specific icon is provided simultaneously electronic program guides (EPG) program cells that comprises expanded text table (ETT) information.
In this case, (step 204), when spectators or set-top box users request electronic program guides (EPG) starting command, control electronic program guides (EPG) shows, is used to indicate the visual indicators of the existence of expanded text table (ETT) information so that show electronic program guides (EPG) screen and demonstration.
Then, when the user selects visual indicators, show expanded text table (ETT) information or expanded text message (ETM) (step 205).
Therefore, which program spectators or set-top box users can be discerned and comprise expanded text table (ETT) information by watching the visual indicators of expanded text table (ETT) information in electronic program guides (EPG) screen.
Fig. 5 shows electronic program guides (EPG) screen of an embodiment who uses electronic program guides of the present invention (EPG) screen, on the precalculated position of the cell mesh 10 of the EPG screen of the program that comprises expanded text table (ETT) information by name " Dino World ", shown character display as the visual indicators relevant such as character " details " (seeing ETT-0) with the existence of expanded text table (ETT) information.Term STT representative system timetable has also been listed constantly, term EIT-0 representative and the corresponding Event Information Table of Promgramming of working as first three (3) hours period, and ETT-0 representative and the corresponding expanded text table of EIT-0, and the existence that shows the expanded text message of the additional information that will provide relevant with program " Dino World " or description is indicated.
According to up to the present described " being controlled at the method that expanded text table (ETT) information on the epg screen of digital TV shows " of the present invention, by the display of visually designator, which program that spectators can easily discern on electronic program guides (EPG) screen includes expanded text table (ETT) information.
In addition, owing to can easily be identified in the program that comprises expanded text table (ETT) information on electronic program guides (EPG) screen, therefore, when utilizing expanded text table (ETT) information, can use the present invention easily.
Claims (14)
1. the method that shows of the expanded text table information on the epg screen that is controlled at Digital Television said method comprising the steps of:
By the grouping that retrieval receives, detect whether there is the expanded text table grouping;
There is expanded text table when grouping when detecting, confirm to comprise the program of expanded text table grouping;
When the viewer request electronic program guides starting command of described Digital Television, TV programme listed in the electronic program guides on being presented at epg screen provides visual indicators, and described visual indicators provides the visual indication with the existence of the corresponding expanded text table information of described program; And
When the user selects visual indicators, show and the corresponding expanded text message of expanded text table information that described expanded text message provides the details relevant with TV programme.
2. method according to claim 1 is characterized in that described detection step comprises: at the expanded text table corresponding packet identifier value of dividing into groups, detect the packet identifier of all transport stream packet that receive.
3. method according to claim 1 is characterized in that the described step of visual indicators that provides comprises: provide unique color to the cell mesh with the corresponding epg screen of TV programme that comprises expanded text table information.
4. method according to claim 1 is characterized in that the described step of visual indicators that provides comprises: the character information relevant with the existence of expanded text table information is inserted on the precalculated position of cell mesh with the corresponding epg screen of TV programme that comprises expanded text table information.
5. method according to claim 1 is characterized in that the described step of visual indicators that provides comprises: with specific icon add to the cell mesh of the corresponding epg screen of TV programme that comprises expanded text table information on.
6. method according to claim 1 is characterized in that the described step of visual indicators that provides comprises: the cell mesh with the corresponding epg screen of TV programme that comprises expanded text table information is carried out two-dimensional process.
7. method according to claim 1 is characterized in that the described step of visual indicators that provides comprises: the cell mesh with the corresponding epg screen of TV programme that comprises expanded text table information is carried out three-dimensional process.
8. the method that shows of the expanded text table information on the epg screen that is controlled at Digital Television, described method comprises step:
By the grouping that retrieval receives, detect whether there is the expanded text table grouping;
There is expanded text table when grouping when detecting, confirm to comprise the virtual channel of expanded text table grouping;
When by the viewer request electronic program guides starting command of described Digital Television, television channel listed in the electronic program guides on being presented at epg screen provides visual indicators, and described visual indicators provides the visual indication with the existence of the corresponding expanded text table information of described television channel; And
When the user selects visual indicators, show and the corresponding expanded text message of expanded text table information that described expanded text message provides the details relevant with television channel.
9. method according to claim 8 is characterized in that described detection step comprises: at the expanded text table corresponding packet identifier value of dividing into groups, detect the packet identifier of all transport stream packet that receive.
10. method according to claim 8 is characterized in that the described step of visual indicators that provides comprises: provide unique color to the cell mesh with the corresponding epg screen of television channel that comprises expanded text table information.
11. method according to claim 8 is characterized in that the described step of visual indicators that provides comprises: the character information relevant with the existence of expanded text table information is inserted on the precalculated position of cell mesh with the corresponding epg screen of television channel that comprises expanded text table information.
12. method according to claim 8 is characterized in that the described step of visual indicators that provides comprises: with specific icon add to the cell mesh of the corresponding epg screen of television channel that comprises expanded text table information on.
13. method according to claim 8 is characterized in that the described step of visual indicators that provides comprises: the cell mesh with the corresponding epg screen of television channel that comprises expanded text table information is carried out two-dimensional process.
14. method according to claim 8 is characterized in that the described step of visual indicators that provides comprises: the cell mesh with the corresponding epg screen of television channel that comprises expanded text table information is carried out three-dimensional process.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2003009911 | 2003-01-17 | ||
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