CN100438608C - A method for retrieving service information data - Google Patents
A method for retrieving service information data Download PDFInfo
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- CN100438608C CN100438608C CNB2004100181747A CN200410018174A CN100438608C CN 100438608 C CN100438608 C CN 100438608C CN B2004100181747 A CNB2004100181747 A CN B2004100181747A CN 200410018174 A CN200410018174 A CN 200410018174A CN 100438608 C CN100438608 C CN 100438608C
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007547 defect Effects 0.000 abstract 1
- 230000008520 organization Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 4
- 241001269238 Data Species 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- 230000005236 sound signal Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2362—Generation or processing of Service Information [SI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a method for service information data retrieval. The service information data is used for storing and managing relevant network information, transport stream information and service information which are applied by digital televisions, and can provide application programming interfaces to cause that required data can be conveniently added and taken out. All the data in a data base is stored in a table form, and the involved table comprises a tuner table, a network table, a transport stream table, a service information table, a channel numbering table, a character string table and an exclusive data table; each stable is associated through identifier values (ID) and key assignments (key). The method of the present invention adopts a direct index mode, and can conveniently and rapidly search and position data in the data stable, so the speed of the present invention surpasses that of an adopted linked list mode, and the defect that when a multiple group mode is adopted, data blocks with indefinite size can not be defined simultaneously.
Description
Technical field
The present invention relates to a kind of retrieval service database of information access method, belong to Digital Television reception technique field.
Background technology
The apparatus of digital television receiving general reference can receive, decodes and show the hardware device of digital television signal, and it is applied to digital TV field, is the terminal (see figure 1) that the simulated television digitlization is achieved.What apparatus of digital television receiving received is digitized image and data message, therefore, be different from the reception and the processing of traditional anolog TV signals, apparatus of digital television receiving is to be undertaken by its inner CPU and coupled peripheral components to the reception and the processing of digitized image information and data.Receiving system is exactly to develop the application program that apparatus of digital television receiving is suitable on the basis of relevant hardware and operating system; Equally, some professional digital broadcast content service providers also need to go out corresponding service software according to the hardware performance and the functional development of different apparatus of digital television receiving.
In the broadcasting equipment of TV station or television operator, audio-video signal mixes with the multiplexer of data content through front end, forms transport stream (TS stream).Transport stream forms electromagnetic signal through ovennodulation and is sent in the apparatus of digital television receiving.Apparatus of digital television receiving (set-top box) work principle is as follows:
◆ tuning/selection module receives electromagnetic signal and selects the bandwidth of certain limit.
◆ demodulation module is conversion of signals data flow (Bitstreams).
◆ demultiplexing module is extracted expectation information out and it is offered different decoders with suitable manner from data flow (Bitstreams), it comprises the descrambler with the Conditional Access Module cooperation.
◆ the video bit stream in the image sequence that the video decode module converts shows.
◆ the audio bit stream in the audio decoder module converts simulated audio signal.
◆ graphics engine set up graph layer before sending with it with to the video mix in the analog signal request of PAL/NTSC.
◆ the front control board is partly explained by receiving the user command that remote controller, Wireless Keyboard or front panel send.
Video bit stream mixes with image through image processor mutually with audio bit stream, becomes the audio-video signal of simulation, outputs on the display screen (television set).Data flow then flow among the CPU by demodulation multiplexer, is handled by the system program of going up operation at central processing unit (CPU).The result who handles can mix with audio/video flow, outputs on the display device.
A network (Network) corresponding a plurality of transport stream (Transport stream), transport stream corresponding again a plurality of business (Service), each network, each transport stream and each professional industry all distinguish correspondence an identifier (ID).When transmitting in network, these information are cut into the table of different-format and are encapsulated in transport stream (TS-Transport stream) bag, and wherein each table all has complete structure.After receiving equipment was received the TS bag, (Demux) decomposited original fragment by demodulation multiplexer, formed list data.With certain hour interval broadcast (sites) in turn, the content of broadcasting may change these information tables in time in network, and this is determined by the data broadcasting system.
In existing apparatus of digital television receiving technology, generally there be not reception, storage and the analytic technique of well-defined these business information data.In some apparatus of digital television receiving, these storage are not got up, each like this when the digital cable customers switching channels, instant loading data, and will resolve, necessary information extracted, thereby need the time, and make the user be in wait state, influence appreciation effect.And in the other receiving equipment, even by the method for storing, also be by setting up network, transport stream and a business structure respectively, adopt the mode of array or linked list type, sequentially searching by their identifier.The shortcoming of this dual mode is: adopt the mode of array can not define the not data block of sizing, and the mode that adopts chained list has increased distribution and discharge internal memory cost, this dual mode is all searched for slow simultaneously, efficient is lower, this is in the relatively more uncommon hardware environment that lacks of apparatus of digital television receiving resource, and it is more inadvisable especially to seem.
Method of the present invention is exactly the solution that proposes at the deficiency of conventional art.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of efficient retrieval business information data, the benefit of this method is exactly by in apparatus of digital television receiving (or claiming set-top box), setting up a business information data village, often used in village names (SI Datebase) is used to deposit and managing digital television business information (SI), be specially the network information (Network), transport stream (TransportStream), and business information information such as (Service), thereby reach the purpose of efficient retrieval business information data.
The present invention is resolved above problem by following technical scheme.In apparatus of digital television receiving, a business information memory is set, when set-top box starts, by the scanning of set-top box, the needed network information, transport stream and business information are retrieved out, and store according to a kind of form of database table structure.In database table structure involved in the present invention, the data that one class is relevant can be stored in the region of memory with definite or non-deterministic structure, each blocks of data all has the information such as length of oneself, has a kind of index simultaneously, can be used to determine the position of next blocks of data.Compare with the array of common employing or the storage means of chained list, this method has been saved memory headroom most possibly, and has remedied the shortcoming of other two kinds of methods, even if be not suitable equally in the very big system at internal memory.Simultaneously, based on this storage organization, retrieve a data block of specifying numbering by gauge outfit since a table, the position of determining next piece according to the length information and the position thereof of each piece, the numbering of comparison block to be finally finding desired data block, thereby realized high efficiency information retrieval function.
Describe technical scheme of the present invention below in detail.
The step of this method:
1. the definition service information database is about the structure of table
The following table of definition in the service information database structure: tuner table (DeviceContext table), net list (Network table), transport stream table (Transport Stream table), service information list (Service table,, channel number table (Numbering table), string table (String table) and proprietary data table (Private datatable).Come related with identifier (ID) with key assignments (Key) between each table.
In the statement below, uint8, uint16, uint32 identify 1 byte, 2 bytes and 4 byte signless integers respectively; Char[] the expression character string.It is as follows that each shows storage organization:
The tuner table:
The length of each unit of tuner table is 3 bytes, storage organization following (the corresponding field of digitized representation, as follows):
| 1 | 2 | 1 | 2 | ... |
Long (byte) explanation in numbering domain name types of variables territory
1 DeviceContextID uint8,1 tuner ID
2 NetworkID uint16,2 network IDs
Net list:
The length of each unit of net list is 12 bytes, storage organization following (the corresponding field of digitized representation, as follows):
| 1 | 2 | 3 | 1 | 2 | 3 | ... |
Long (byte) explanation in numbering domain name types of variables territory
1 NetworkID uint16,2 network IDs
2 NetworkNameID uint32,4 network title ID
3 PrivateDataID uint32,4 private data ID
The transport stream table:
Length power 29 bytes of each unit of transport stream table, storage organization is as follows:
| 1 | 2 | 3 | 4 | ... | 9 | 1 | 2 | 3 | 4 | ... | 9 | ... |
Long (byte) explanation in numbering domain name types of variables territory
The Key of the tuner of 1 DeviceContextKey uint32,4 place networks
2 TransportStreamID uint16,2 transport stream ID
3O riginalNetworkID uint16 2 primitive network ID
4 TunningType uint8,1 tuning type
5 Frequency uint32,4 BIS frequencies
6 SymbolRate uint32,4 symbol rates
7 TuningCommonInfo uint32,4 tuning general informations
8 TuningSpecificInfo uint32,4 tuning specific informations
The ID of 9 PrivateDataID uint32,4 private datas
Service information list:
The difference of the number of the basic stream that the length of each unit of service information list comprises according to this business and difference, storage organization is as follows:
Wherein, _ Stream part is made of the information of a plurality of basic streams, 8 bytes of the length power of each basic stream information, and the physical length of this part is determined by StreamCount.
Long (byte) explanation in numbering domain name types of variables territory
The Key of 1 TransportStreamKey uint32,4 place transport stream
The character string ID of full name of 2 ServiceNameID uint32,4 services
The character string ID of the short name of 3 ShortServiceNameID uint32,4 services
4 ServiceID uint16,2 service ID
The Pid of 5 PmtPid uint16,2 Pmt table
6 CASystemID uint16,2 CA system identifiers
The Pid of 7 ECMVideoPid uint16,2 ECMVideo table
The Pid of 8 ECMAudioPid uint16,2 ECMAudio table
The Pid of 9 PCRPid uint16,2 PCR table
The type of 10 Type uint8,1 service
11 Flags uint8,1 service identifiers
12 Propert ies uint8,1 Service Properties
The ID of 13 StreamCount uint32,4 private datas
14 _Stream
14.1 Type uint8 1 basic stream type
14.2 ComponentTag uint8 1
14.3 Pid uint16 2 basic stream PID
14.4 Language[3] int8 3 basic stream language
14.5 the type of AudioType int8 1 audio frequency
The channel number table:
The length of each unit of channel number table is the Count*6+4 byte, and storage organization is as follows:
| 1 | 2 | 3 | 4 | 3 | 4 | ... | 1 | 2 | 3 | 4 | ... |
One group of ServiceKey and Properties represent a channel, total Count, channel is followed successively by 1,2,3 ...
Long (byte) explanation in numbering domain name types of variables territory
The ID of 1 NumberingID uint16,2 Numbering
The number of 2 Count uint32,2 channels
The Key of 3 ServiceKey uint32,4 channel corresponding with service
4 Properties uint32,2 channel attributes
String table:
The indefinite length of each unit of string table, storage organization is as follows:
| 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 | ... |
When in table, searching, jump to next unit according to ID and length from a unit, up to the character string unit of appointment.
Long (byte) explanation in numbering domain name types of variables territory
The ID of 1 StringID uint32,4 character strings
The length of 2 Length uint8,1 character string
3 String char[] character string (with 0 the ending)
The proprietary data table:
The indefinite length of each unit of proprietary data table, storage organization is as follows:
| 1 | 2 | 3 | 4 | 5 | 6 | 4 | 5 | 6 | ... | 1 | 2 | ... |
Size represents from the total length of a unit;
One group of Tag, Length and Data represent a descriptor, total Count descriptor.
Long (byte) explanation in numbering domain name types of variables territory
The ID of 1 PrivateDataID uint32,4 private datas
The total length of 2 Size uint32,4 private data unit
The number of 3 Count uint32,4 descriptors
The type of 4 Tag uint8,1 descriptor
The length of 5 Length uint8,1 descriptor
6 Data char[] descriptive data
2. set up the index of service information database and the association between the information table
All data of business information data village, often used in village names all are stored in the permanent memory with the form of table, as flash memory (Flash), hard disk etc., and are written into random asccess memory when receiving equipment starts.Each table all is made up of different unit, and there is a different key assignments (Key) each unit, and it is exactly an index of searching relevant information, and it is zero-based unit number, is used to distinguish different unit.For the unit of regular length, can in table, directly locate by key assignments and element length; For the unit of indefinite length, also can be by element length information and the key assignments sequential search of in each unit, preserving.
Data in the service information database are to come related by each value of showing corresponding identifier with key assignments.Both differences are that the value of identifier is unique but not necessarily continuous, but key assignments is continuous with respect to same table, and this continuous characteristics make and search in tables of data, very convenient during locator data.Incidence relation between each table is seen Fig. 2.
If relevant character string information is arranged in table, then the field of character string is all passed through its ID number and is associated with the StringID in the string table (just having represented the StringID in the string table as the ServiceNameID in the service information list); The proprietary data table is used to deposit some auxiliary, side informations.If some tables have a privately owned description sign (PrivateDataID), just represent that it is with the association of proprietary data epiphase.
If the network identity (networkid) of known digital TV network can be obtained corresponding network key assignments (network key), can from network information table, obtain network for information about in view of the above.In like manner, represent (network id), transport stream identification (transport stream id) according to network or add the information that service identification (service id) can obtain transport stream and business.
The effect of channel label list is expression channel and professional relation.The structure of channel number table as mentioned shown in: each numbering represents with a Numberi ngID, and different Digital Television operation faces can be with different channel representations, and each representation is a numbering.On a numbered cell, one group [service key, service properties] represents a channel.When searching, by given numbering id and channel (i.e. the position at [service key, serviceproperties] place in number table), can unique definite channel corresponding service.
Below in conjunction with accompanying drawing, method of the present invention is further described.
Description of drawings:
Fig. 1 is the block diagram of digital television devices work.Digital television signal enters receiving equipment, through the processing of demodulation Multiplexing module, audio-video signal and data-signal is separated, and event information data entrained in the data-signal is used to be presented at television screen through handling and storage.
Fig. 2 is the association between the several tables of service information database.It identifies between several information tables and sets up contact by key assignments (Key), by corresponding key assignments and sign (ID), finds corresponding information successively.The key assignments that the service information list of searching is arranged in the channel number table; In service information list, the key assignments of searching the transport stream table is arranged; In the transport stream table, the key assignments of Network Search information table is arranged.Can in each table, obtain relevant information by key assignments.
The present invention is described in further detail below in conjunction with concrete embodiment.
Embodiment:
Execution mode 1: the filling of business information data.When set-top box started for the first time, service information database was empty.At this moment, by loading broadcasting channel information that network information table, service information list (information table of Digital Television necessity has: PAT, PMT, NIT, SDT or BAT etc.) etc. obtain the network information of digital television transfer, transport stream, Business Name, pairing audio/video flow etc., according to these information, concern according to defined service information list of this method and corresponding retrieval and to set up service information database.
Execution mode 2: the retrieval of business information.Suppose in service information database, to have stored data necessary, comprise a cable network, three transport stream in network and the digital TV programme of six covers, these information exist respectively in network information table, transport stream table and the service information list.In the channel number table, stored and the corresponding channel information of six programs, represented six tricks byte orders with from 1 to 6 respectively.
Now, an application will switch to 3 channels from 4 current channels, and it needs at first to know that 3 channels are those programs, and this can obtain from the channel number table, has comprised the professional key assignments ServiceKey of corresponding channel.Can in service information list, obtain the information of channel in view of the above again, key assignments TransportSt reamKey comprising the transport stream at corresponding channel place, can in the transport stream table, obtain the information of corresponding transport stream equally by TransportStreamKey, most important for switching channels in these information is exactly the frequency at transport stream place, and the hardware demodulator that this frequency information is passed in the receiving equipment just can switch to the transport stream at program place.So far, a channel switching has just been finished.
It should be noted last that: the method and the design philosophy thereof that the present invention is to provide a kind of efficient retrieval business information data village, often used in village names, above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1, a kind of method of retrieval service information data, it is characterized in that, in apparatus of digital television receiving, setting up a service information database is used to deposit and the managing digital television business information, data are with the form storage of table in described service information database, described digital television business information is the network information, transport stream, and business information;
Described table comprises:
Network information table, storage network of relation information;
The transport stream table, storage associated transport stream information;
Service information list, storage related service information;
The channel number table, the information that storage numbers in order;
String table, store character string information;
The proprietary data table, storage and network, transport stream or professional relevant information;
By key assignments (Key) with the epiphase association in the service information database;
In the channel number table, the key assignments of the service information list of searching is arranged;
In service information list, the key assignments of searching the transport stream table is arranged;
In the transport stream table, the key assignments of Network Search information table is arranged;
In each table, obtain relevant information by described key assignments.
2, the method for a kind of retrieval service information data according to claim 1 is characterized in that, described channel number table, string table and proprietary data table are the indefinite table of element length, realizes the access of indefinite length data block by them.
3, the method for a kind of retrieval service information data according to claim 1, it is characterized in that the table that it can also be by adopting other is in order to storing other information, and in these tables, concrete data item can have interpolation and delete, but retrieval mode is constant.
4, a kind of method of retrieval service information data, it is characterized in that, in apparatus of digital television receiving, setting up a service information database is used to deposit and the managing digital television business information, data are with the form storage of table in described service information database, described digital television business information is the network information, transport stream, and business information;
Described table comprises:
Network information table, storage network of relation information;
The transport stream table, storage associated transport stream information;
Service information list, storage related service information;
The channel number table, the information that storage numbers in order;
String table, store character string information;
The proprietary data table, storage and network, transport stream or professional relevant information;
By identifier with the epiphase association in the service information database;
In network information table, the transport stream identifier is arranged so that search the information of transport stream; In the transport stream table, the business information identifier is arranged so that search business information.
5, the method for a kind of retrieval service information data according to claim 4 is characterized in that, described channel number table, string table and proprietary data table are the indefinite table of element length, realizes the access of indefinite length data block by them.
6, the method for a kind of retrieval service information data according to claim 4, it is characterized in that the table that it can also be by adopting other is in order to storing other information, and in these tables, concrete data item can have interpolation and delete, but retrieval mode is constant.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100181747A CN100438608C (en) | 2004-05-09 | 2004-05-09 | A method for retrieving service information data |
| PCT/CN2005/000623 WO2005109867A1 (en) | 2004-05-09 | 2005-05-08 | A method for retrieving service information data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100181747A CN100438608C (en) | 2004-05-09 | 2004-05-09 | A method for retrieving service information data |
Publications (2)
| Publication Number | Publication Date |
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| CN1571502A CN1571502A (en) | 2005-01-26 |
| CN100438608C true CN100438608C (en) | 2008-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100181747A Expired - Lifetime CN100438608C (en) | 2004-05-09 | 2004-05-09 | A method for retrieving service information data |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100438608C (en) |
| WO (1) | WO2005109867A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047818B (en) * | 2006-03-28 | 2013-06-12 | 友达光电股份有限公司 | Band allocation data symmetric adjustment system and method |
| CN101276334B (en) * | 2007-03-29 | 2011-04-06 | 上海新跃仪表厂 | Linked list implementing method for quickly searching data |
| CN101568011B (en) * | 2008-04-24 | 2012-04-04 | 乐金电子(中国)研究开发中心有限公司 | Method and device for rapidly searching unencrypted service of digital television |
| AU2010263721A1 (en) * | 2009-06-25 | 2012-02-16 | Shuhei Nishiyama | Database management device using key-value store with attributes, and key-value-store structure caching-device therefor |
| CN101945207B (en) * | 2010-09-17 | 2013-01-16 | 福建新大陆通信科技股份有限公司 | Two-dimensional index table rapid buffering method based on set-top-box upgrade data |
| CN101959006A (en) * | 2010-09-25 | 2011-01-26 | 深圳市迎风传讯科技有限公司 | Set top box and method for processing programs by same |
| CN102123323B (en) * | 2010-12-27 | 2012-10-24 | 四川长虹电器股份有限公司 | Method for rapidly updating television program of single-tuner set top box |
| CA2935145C (en) | 2014-01-17 | 2022-10-18 | Sony Corporation | Receiving apparatus, receiving method, transmission apparatus, and transmission method |
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| WO1998009430A2 (en) * | 1996-08-09 | 1998-03-05 | Thomson Multimedia | Method for indexing data in a digital television transmission system |
| JPH11112899A (en) * | 1997-09-30 | 1999-04-23 | Matsushita Electric Ind Co Ltd | Digital broadcasting receiving device |
| CN1307429A (en) * | 1999-12-30 | 2001-08-08 | 汤姆森多媒体公司 | Method for construction of digital Tv service data base and decoder for realizing the method |
| US6463586B1 (en) * | 1999-07-01 | 2002-10-08 | Scientific-Atlanta, Inc. | Service navigation systems and methods |
| US6587873B1 (en) * | 2000-01-26 | 2003-07-01 | Viaclix, Inc. | System server for channel-based internet network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11220703A (en) * | 1998-01-30 | 1999-08-10 | Toshiba Corp | Program retrieval display device |
| JP2004120115A (en) * | 2002-09-24 | 2004-04-15 | Fujitsu Ten Ltd | Digital broadcast receiver |
-
2004
- 2004-05-09 CN CNB2004100181747A patent/CN100438608C/en not_active Expired - Lifetime
-
2005
- 2005-05-08 WO PCT/CN2005/000623 patent/WO2005109867A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998009430A2 (en) * | 1996-08-09 | 1998-03-05 | Thomson Multimedia | Method for indexing data in a digital television transmission system |
| JPH11112899A (en) * | 1997-09-30 | 1999-04-23 | Matsushita Electric Ind Co Ltd | Digital broadcasting receiving device |
| US6463586B1 (en) * | 1999-07-01 | 2002-10-08 | Scientific-Atlanta, Inc. | Service navigation systems and methods |
| CN1307429A (en) * | 1999-12-30 | 2001-08-08 | 汤姆森多媒体公司 | Method for construction of digital Tv service data base and decoder for realizing the method |
| US6587873B1 (en) * | 2000-01-26 | 2003-07-01 | Viaclix, Inc. | System server for channel-based internet network |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005109867A1 (en) | 2005-11-17 |
| CN1571502A (en) | 2005-01-26 |
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