CN1688957A - Method and system for providing a cache guide - Google Patents
Method and system for providing a cache guide Download PDFInfo
- Publication number
- CN1688957A CN1688957A CN 03823813 CN03823813A CN1688957A CN 1688957 A CN1688957 A CN 1688957A CN 03823813 CN03823813 CN 03823813 CN 03823813 A CN03823813 A CN 03823813A CN 1688957 A CN1688957 A CN 1688957A
- Authority
- CN
- China
- Prior art keywords
- program guide
- subclass
- guide data
- data
- local storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- H04N21/21—Server components or server architectures
- H04N21/214—Specialised server platform, e.g. server located in an airplane, hotel, hospital
- H04N21/2143—Specialised server platform, e.g. server located in an airplane, hotel, hospital located in a single building, e.g. hotel, hospital or museum
-
- 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
- H04N21/21—Server components or server architectures
- H04N21/222—Secondary servers, e.g. proxy server, cable television Head-end
- H04N21/2225—Local VOD servers
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
-
- 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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
- H04N21/2396—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests characterized by admission policies
-
- 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
-
- 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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
-
- 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
- H04N21/47—End-user applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
A method and system for providing a cache guide to a client. The cache guide containing a subset of available guide data. The available guide data being locally stored in a Mini-Headend unit (12) and the subset being stored in the cache memory of a remote set-top box (44).
Description
Technical field
The present invention relates to how resident or take more Video service is provided in the network.
Background technology
In conventional video system (for example, satellite, cable etc.), the content provider provides program guide (it has listed channel ID, program title, program description etc.) to the client in this system.Traditionally, complete program guide is stored on consumer's premises equipment device (for example set-top box) in each client's the resident element.Yet the defective of this method is program guide very big (for example 6MB) usually.Therefore, cpe device must have big relatively storer and must distribute most storer to come programs stored guide.The present invention is intended to overcome this defective.
Summary of the invention
The present invention has limited the storage requirement in the network machine top box, reduces the total system cost so that use littler storer to collect a part of guide with the whole guide that resides on the addressable network.More specifically, the present invention is devoted to a kind of method and system that is used for providing to the client cache guide.This cache guide comprises subset of available guide data.Described available guide data is stored locally in the mini-headend unit, and described subclass is stored in the cache memory of remote set-top box.
Description of drawings
In the accompanying drawings:
Fig. 1 is example system figure of the present invention; With
Fig. 2 is the process flow diagram of diagram program guide cache handles of the present invention.
From the following explanation that provides by example, it is more obvious that the features and advantages of the present invention will become.
Embodiment
Referring now to Fig. 1,, shows example system 10 according to principle work of the present invention.System 10 is integrated digital data systems, and being used for provides broadband, digital video and service to a plurality of users.More specifically, system 10 is integrated is used for a plurality of users' high quality audio and video and digital IP data, services.This system design provides a platform, is used to move a plurality of worthwhile digital services.System 10 is designed to and can upgrades, and therefore can incrementally increase different digital data service.
System 10 comprises: mini-headend unit 12 wherein receives, concentrates and distributed digital loop audio frequency, video and data, services; Many resident elements (Multi-Dwelling Unit) and/or take unit (Multi-Tenant Unit) (" MxU ") network 14 more.Network 14 can be positioned at one or more apartment buildings, hotel or any other structure---wherein resident a plurality of clients of digit expected audio frequency, video and data, services.
Mini-headend unit 12 is responsible for receiving data, and service quality (" QoS ") is provided, and the service of customization is provided and routes data to resident element 16 in MxU network 14.Data service system 24 and QoS switch 28 that mini-headend unit 12 comprises core video service system 18, advanced video services system 22, communicates to connect with the Internet 26.
Core video service system 18 preferably includes the satellite receiver system 19 that communicates to connect with satellite 20.Satellite receiver system 19 can calibrate the quantity of the stream that receives from satellite 20 according to the client's of desired service quantity.More specifically, multicast server of satellite receiver system 19 operations is so that the 44 request digital data streams of the network machine top box in resident element 16.Satellite receiver system 19 calibrates up to all transponders that receive satellite according to the quantity of the tuning paddle in frame (chassis) (tuning blade).Frame with full load installation of 60 transponders can be handled the input data transfer rate of 2.4Gbps.Herein, for suitable multicast group, described frame can ask to handle n user by receiving new user.Satellite receiver system 19 can receiving satellite signal and with the data transfer rate of 2Gbps to cast aware switch 28 output IP groupings.More specifically, the IP grouping that is sent out uses QoS (being set forth in standard IEEE 802.1p (title is " Traffic Class Expediting and Dynamic Multicast Filtering ") and IEEE 802.1q (title is " Virtual LAN ")) to guarantee promptly to transmit grouping.Network interface in satellite receiver system 19 is the ethernet port of 1Gbps, and can expand to the ethernet port of two 1Gbps.The management system of satellite receiver system 19 is from the request of client's reception for program.Described management system makes customer selecting satellite, transponder and program ID, and makes satellite receiver system 19 provide concrete program stream to the client.Described management system also supports multicast to save bandwidth.Though satellite receiver system 19 and satellite 20 are illustrated as content medium is provided in Fig. 1, also consider to be used to provide other media (for example cable, optical fiber etc.) of content within the scope of the invention.
Advanced video services system 22 is platforms, and it combines the digital video services of working and enabling to add with satellite receiver system 19.Quantity according to the client who uses service is calibrated advanced video services system 22.For example, when client's quantity increased, system 22 can require more service device 30.Particularly video request program of the COS that is provided, near video-on-demand, limited video request program, Nielsen speed, time shift, automatic record, personal video recording (" PVR ") etc.Advanced video system 22 comprises the conditional access system (not shown), and it is used to be recorded to the program stream of hard disk drive 32.When record, deciphering is extracted picture data, and hard disk drive 32 is encrypted and stored into to new program stream (comprising the picture data that is extracted) from the original program stream that satellite receiver system 19 receives.Network provider's conditional access system is terminated at advanced video system server 30, and uses new conditional access system thereafter.
Calibrate data service system 24 according to the client's who uses Internet service quantity and the desired speed of Internet service or bandwidth.
Mini-headend unit 12 can comprise gigabit QoS Ethernet switch 28 (medium of big system is needed), and it is upgradeable, and can be removed under small-sized installation situation.Those skilled in the art know that some problems of being considered are that the COS and how many resident elements 16 in MxU network 14 that are provided need to support when selecting switch 28.Switch 28 provides the connection between satellite receiver system 19, advanced video services system 22 and data service system 24.Switch 28 also provides from the connection of mini-headend unit 12 to MxU networks 14.Switch 28 is supported full-duplex gigabit ethernet interfaces, and can upgrade to support the system of all size.Switch 28 is supported in the QoS that provides in IEEE 802.1p and the 802.1q standard.The QoS facility communication between switch 28 and advanced video services system 22 and data service system 24.More specifically, and compare, provide higher right of priority video data from video service system 18 and advanced video services system 22 from the data of data service system 24.For example, when asking video data and internet data simultaneously, at first send video data, and if or can obtain enough bandwidth then send internet data simultaneously, perhaps afterwards time sends internet data when enough bandwidth can obtain.
MxU network 14 comprises service rack (service rack) 34 and resident element 16.Service rack 34 is scalable according to the quantity of the resident element in MxU network 14 16, and is arranged in wherein the central point that the telephone wire at MxU network 14 concentrates in together.The quantity of the MxU network 14 in system 10 controls the quantity of needed service rack 34.Preferably, provide service rack 34 for each network 14 (for example buildings) in multi-network environment (for example many building complexs).Each service rack 34 comprises VDSL switch 36, and it uses plain old telephone service (" POTS ") shunt 38 with POTS service 40 and via digital video, audio frequency and the data combination of 1Gbps telephone wire from QoS switch 28 receptions of mini-headend unit 12.Though VDSL switch 36 is illustrated as Ethernet QAM switch, should be noted that and use any other Ethernet switch to be considered within the scope of the invention.
In system 10, each resident element 16 that requires to subscribe digital services has customer station equipment (" CPE ") device.The CPE device that is used for given resident element 16 can comprise modulator-demodular unit 42, network machine top box (" STB ") 44, modulator-demodular unit 42 and STB44 or integrated modulator-demodular unit and STB unit (not shown) according to client's service subscription.Example system 10 of the present invention requires modulator-demodular unit 42 at least, is used for receiving digital data, Voice ﹠ Video service.Modulator-demodular unit 42 can be connected to switch 36 via telephone wire, and stops the VDSL line.Modulator-demodular unit 42 also have POTS shunt (not shown) be used for telephone service be connected 46.Modulator-demodular unit 42 has ethernet port, is used to provide computing machine 48 access to the Internet and network STB 44 visits to the Voice ﹠ Video service.
Though telephone wire is shown as the communication media that is used as between resident element 16 and the mini-headend unit 12, cable and wireless network also are considered within the scope of the invention.
In a word, system 10 provides the framework that is used for providing to the client who resides in resident element 16 special transmission DAB, digital video, high-speed the Internet access, telephone service, security service etc., and provides revenue stream and platform to increase service that increase progressively or new to the supplier of system.
Referring now to Fig. 2,, shows program guide cache handles 50.In case start-up system 10, in step 52, mini-headend unit 12 is obtained program guide from core video service system 18.Should be noted that in some cases guide can and can require to scan a plurality of channels greater than 6Mbyte or transponder is collected whole guide.Mini-headend unit 12 local programs stored guides, and in step 54 are upgraded program guide periodically when core video service system 18 provides new guide data.After network STB44 guiding STB 44, in step 56, set up ram cache, and from mini-headend unit 12 request program guide data.In response to this request, in step 58, mini-headend unit 12 sends the subclass of the program guide of local storage to STB 44.This subclass has been preserved enough information so that allow the different channel of customer selecting, and is provided at the in detail fast phase (snapshot) around the current channel of watching.In step 60, STB 44 is stored in the subclass that receives in its cache memory.Afterwards, navigate by program guide the client, during switching channels etc., in step 62, STB 44 will ask to upgrade the program guide subclass of being stored from mini-headend unit 12.Because mini-headend unit 12 is kept the current program guide of complete sum, compare if therefore must collect this renewal by the transponder of scanning program stream, channel and/or core video service system 18 with STB 44, faster to the response of update request.
The program guide that should be noted that mini-headend unit 12 storage can be increased via data service system 24 from the Internet 26 additional informations of obtaining (for example, program data, video clipping etc..).
Though the present invention has been described in conjunction with the embodiment disclosed herein, should be understood that above-mentioned explanation is intended to graphic extension, and the scope of the present invention that does not limit claims and limited.
Claims (20)
1. method that program guide is provided, described method comprises step:
Obtain program guide data (52) from the content provider;
The program guide data that local storage is obtained;
The subclass of the program guide data of this locality storage is sent to remote terminal (58);
Receive the request (62) that subclass is upgraded from remote terminal;
The program guide of the local storage of visit is to generate the renewal of being asked; With
Described renewal is sent to remote terminal.
2. the method for claim 1, wherein remote terminal is set-top box (44).
3. the method for claim 1, wherein update request produces owing to channel changes.
4. the method for claim 1, wherein the subclass of the program guide data of local storage comprise the program guide that is used for local storage all channels channel ID and be used for the detailed programme information of one of channel of the program guide of local storage.
5. the method for claim 1 also comprises step:
Obtain renewal (54) cycle from the content provider to program guide data; With
Change the program guide data of local storage, thereby the program guide of local storage is suitable for upgrading (54).
6. method as claimed in claim 5 also comprises step:
If the data from the local program guide data of storing of renewal change that the content provider receives then send new subclass to remote terminal, described local program guide data of storing is included in the subclass that before is sent to terminal.
7. method that program guide is provided, described method comprises step:
Distribute the subclass (56) of cache memory with the programs stored guide data;
Obtain the subclass (58) of program guide data;
The subclass of program guide data is stored in the cache memory; With
The subclass of handling the program guide data of being stored is to generate program guide.
8. method as claimed in claim 7 also comprises step:
To client's display program guide.
9. method as claimed in claim 7 also comprises step:
Change request from client's receiving channels;
Second subclass of request program guide data;
Second subclass of program receiving guide data; With
Second subclass of program guide data is stored in the cache memory.
10. method as claimed in claim 7, wherein said program guide data by remote storage in mini-headend unit (12).
11. the system that program guide is provided, described system comprises:
Be used for obtaining the device (18) of program guide data from the content provider;
Be used for the local device (22) of storing the program guide data of being obtained;
Be used for the subclass of the program guide data of this locality storage is sent to the device (12,36) of remote terminal;
Be used for receiving the device (12) of the request that subclass is upgraded from remote terminal;
Be used to visit the program guide of local storage to generate the device (30) of the renewal of being asked; With
Be used for described renewal is sent to the device (28,30,36) of remote terminal.
12. system as claimed in claim 11, wherein said remote terminal is set-top box (44).
13. system as claimed in claim 11, wherein said update request produces owing to channel changes.
14. system as claimed in claim 11, the subclass of the program guide data of wherein said local storage comprise the detailed programme information of one of the channel ID of all channels that are used for the local program guide of storing and channel of the program guide that is used for local storage.
15. system as claimed in claim 11 also comprises:
Be used for obtaining device (18) cycle to the renewal of program guide data from the content provider; With
Thereby be used to change the device (30) that the local program guide of storing of local program guide data of storing is suitable for upgrading.
16. system as claimed in claim 15 also comprises:
If be used for changing the data of the program guide data of local storage from the renewal that the content provider receives, then send the device (28 of new subclass to remote terminal, 30,36), the program guide data of described local storage is included in the subclass that before is sent to terminal.
17. the system that program guide is provided, described system comprises:
Be used to distribute the device (44) of cache memory with the subclass of programs stored guide data;
Be used to obtain the device (12,36) of the subclass of program guide data;
Be used for the subclass of program guide data is stored in the device (44) of cache memory; With
Be used to handle the subclass of the program guide data of being stored to generate the device (44) of program guide.
18. system as claimed in claim 17 also comprises:
Be used for device (44) to client's display program guide.
19. system as claimed in claim 17 also comprises:
Be used for changing the device (44) of request from client's receiving channels;
Be used to ask the device (28,36,44) of second subclass of program guide data;
The device (28,36,44) that is used for second subclass of program receiving guide data; With
Be used for second subclass of program guide data is stored in the device (44) of cache memory.
20. system as claimed in claim 17, wherein said program guide data by remote storage in mini-headend unit (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40843602P | 2002-09-05 | 2002-09-05 | |
| US60/408,436 | 2002-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1688957A true CN1688957A (en) | 2005-10-26 |
| CN100449458C CN100449458C (en) | 2009-01-07 |
Family
ID=31978618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038238136A Expired - Fee Related CN100449458C (en) | 2002-09-05 | 2003-09-05 | Method and system for providing a cache guide |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1540936A4 (en) |
| JP (1) | JP4705781B2 (en) |
| KR (1) | KR101006409B1 (en) |
| CN (1) | CN100449458C (en) |
| AU (1) | AU2003270371A1 (en) |
| BR (1) | BR0314337A (en) |
| MX (1) | MXPA05002554A (en) |
| WO (1) | WO2004023785A2 (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038211A (en) * | 1989-07-05 | 1991-08-06 | The Superguide Corporation | Method and apparatus for transmitting and receiving television program information |
| US5619274A (en) * | 1990-09-10 | 1997-04-08 | Starsight Telecast, Inc. | Television schedule information transmission and utilization system and process |
| US5404505A (en) * | 1991-11-01 | 1995-04-04 | Finisar Corporation | System for scheduling transmission of indexed and requested database tiers on demand at varying repetition rates |
| US5418782A (en) * | 1992-10-30 | 1995-05-23 | Scientific-Atlanta, Inc. | Methods and apparatus for providing virtual service selection in a multi-service communications system |
| US5405505A (en) | 1994-01-14 | 1995-04-11 | Lloyd Berg | Separation of benzene from close boiling hydrocarbons by azeotropic distillation |
| US5630119A (en) * | 1995-05-05 | 1997-05-13 | Microsoft Corporation | System and method for displaying program listings in an interactive electronic program guide |
| US6405239B1 (en) * | 1996-12-09 | 2002-06-11 | Scientific-Atlanta, Inc. | Using a hierarchical file system for indexing data broadcast to a client from a network of servers |
| US5905942A (en) * | 1997-02-18 | 1999-05-18 | Lodgenet Entertainment Corporation | Multiple dwelling unit interactive audio/video distribution system |
| US7694319B1 (en) * | 1998-11-02 | 2010-04-06 | United Video Properties, Inc. | Interactive program guide with continuous data stream and client-server data supplementation |
| CA2393824C (en) | 1999-12-08 | 2014-01-07 | Tune To Com Inc. | Scheduled retrieval, storage and access of media data |
| JP3980805B2 (en) * | 2000-03-10 | 2007-09-26 | パイオニア株式会社 | Program information recording apparatus and recording method |
| CN1338871A (en) * | 2000-08-16 | 2002-03-06 | 北京华诺信息技术有限公司 | Method for multiplexing tuner in bidirectional cable system for cable TV |
-
2003
- 2003-09-05 JP JP2004534710A patent/JP4705781B2/en not_active Expired - Fee Related
- 2003-09-05 WO PCT/US2003/027985 patent/WO2004023785A2/en active Application Filing
- 2003-09-05 EP EP03752059A patent/EP1540936A4/en not_active Withdrawn
- 2003-09-05 KR KR20057003678A patent/KR101006409B1/en not_active IP Right Cessation
- 2003-09-05 CN CNB038238136A patent/CN100449458C/en not_active Expired - Fee Related
- 2003-09-05 BR BR0314337-6A patent/BR0314337A/en not_active Application Discontinuation
- 2003-09-05 MX MXPA05002554A patent/MXPA05002554A/en not_active Application Discontinuation
- 2003-09-05 AU AU2003270371A patent/AU2003270371A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP4705781B2 (en) | 2011-06-22 |
| KR20050035290A (en) | 2005-04-15 |
| WO2004023785A3 (en) | 2004-07-15 |
| EP1540936A4 (en) | 2007-12-05 |
| EP1540936A2 (en) | 2005-06-15 |
| BR0314337A (en) | 2005-08-09 |
| WO2004023785A2 (en) | 2004-03-18 |
| MXPA05002554A (en) | 2005-05-27 |
| AU2003270371A1 (en) | 2004-03-29 |
| KR101006409B1 (en) | 2011-01-10 |
| CN100449458C (en) | 2009-01-07 |
| AU2003270371A8 (en) | 2004-03-29 |
| JP2005538615A (en) | 2005-12-15 |
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