WO2005055603A1 - Procede d'amelioration du transfert de donnees - Google Patents

Procede d'amelioration du transfert de donnees Download PDF

Info

Publication number
WO2005055603A1
WO2005055603A1 PCT/GB2004/004368 GB2004004368W WO2005055603A1 WO 2005055603 A1 WO2005055603 A1 WO 2005055603A1 GB 2004004368 W GB2004004368 W GB 2004004368W WO 2005055603 A1 WO2005055603 A1 WO 2005055603A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
subscribed
data source
channel
receiver
Prior art date
Application number
PCT/GB2004/004368
Other languages
English (en)
Inventor
Peter William Wild
Original Assignee
Roke Manor Research Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roke Manor Research Limited filed Critical Roke Manor Research Limited
Publication of WO2005055603A1 publication Critical patent/WO2005055603A1/fr

Links

Classifications

    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • H04N21/44055—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
    • 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
    • H04N21/631—Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
    • 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
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8549—Creating video summaries, e.g. movie trailer
    • 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

Definitions

  • a METHOD OF ENHANCING DATA TRANSFER This invention relates to a method of enhancing data transfer in a communication system.
  • data transmission is carried out using different mechanisms in a communication system.
  • a particular example is transmission of television programmes.
  • a programme's vision content is transmitted using amplitude modulation, while its sound content is transmitted via frequency modulation.
  • a programme can be broadcast free to any user with a suitable receiver or it may be intended only for subscribers who have paid for the service.
  • One way in which access control is achieved, taking advantage of the different mechanisms, is by using different mediums for reception, i.e. a standard TV aerial for the free broadcast and a cable system for the subscription service.
  • Broadcasters would like to tempt non-subscribers to take up their services, but there may be some reluctance if this involves purchasing and installing additional equipment.
  • Data transfer is enhanced in that the receiver is able to receive more than one data source simultaneously, so that all data sources can be sent in common over a single frequency communications channel, but the receiver only decodes all data sources if it is subscribed to the appropriate service for each. If the receiver is in non-subscribed mode, then it can only decode the first data source, or each data source which has been allocated for non-subscribed mode. Preferably, each data source is transmitted on a separate sub-channel of the single frequency communication channel. The number of data sources that can be transmitted and controlled is directly related to the number of sub-channels available.
  • the receiver uses the data from the second source on a second channel to either improve the quality of the data from the first source on a first channel, or to provide additional data content to enhance the data in the first channel.
  • the second data source comprises the same type of data as the first data source, in a different format. This is particularly applicable where the supplier is trying to attract new custom, because a user receiving the low quality free service can simply pay to upgrade to the enhanced service.
  • the first data source is one of a video stream, or share prices on an internet web page.
  • the enhanced service provides the video stream at a higher resolution to give a better quality image or at a higher data rate to update the share price more frequently. Another example is the rate of updating of prices for goods or services on an auction web site.
  • the first data source is a black and white video stream and the second data source is a colour video stream.
  • the basic service non-subscribed
  • the enhanced service provides colour images.
  • the sub-channels are separated in time.
  • the communication system uses a single frequency, multiple channel system, such as time division multiple access (TDMA) or code division multiple access (CDMA).
  • FIG. 1 is a block diagram illustrating one embodiment of the method of the present invention.
  • a communication system capable of transmitting data 2 via at least two subchannels 3, 4 within a transmission, receives data 2 from a data source and splits it into different data types in a data splitter 5.
  • Data of a first type on the first sub-channel 3 is subjected to conditional access coding 6 and then coded 7 for transmission.
  • Data of the second type is sent via an alternative path, sub-channel 4, direct to the coder 7.
  • the two sub-channels are recombined and sent to a transmitter 8 which transmits them via an appropriate medium 9 to a dual channel receiver 10.
  • the receiver in such a system is capable of decoding the transmitted data from the two sub-channels simultaneously.
  • the data in the respective subchannels 3, 4 are directed to a data fuser 12, the first sub-channel data having first passed through a conditional access decode 11.
  • the data fuser the data is prepared for presentation according to whether the receiver is set-up in subscribed or non-subscribed mode and then presented accordingly in a data presentation stage 13.
  • the communication system generally transmits to multiple users, each having a receiver, although, for simplicity, only one user and associated receiver is shown in this example.
  • the non-subscribed mode data is broadcast, in the sense that it is available to any user with a suitable receiver, but the actual mechanism by which it is transmitted may be via an RF transmitter, a cable network, a mobile phone network, or any other suitable medium.
  • Splitting the source data into two sub-channels allows low value data to be provided via one sub-channel, and high value data via the second sub-channel. If the system has provision for multiple sub-channels, then far more options are available to the service provider. Although these examples are directed to two sub-channels, the invention is not limited to this.
  • a conditional access (CA) scheme is employed to limit access to the high value data, unless the user has subscribed and typically also paid a fee.
  • the low value sub-channel reception is free, but this is not always the case and it is quite possible that the "non-subscribed" mode simply means that only a basic package has been purchased, whereas the "subscribed" mode allows the user access to the premium package.
  • Different criteria can be used to define the high value data, for example, on the basis of its content value, or speed of delivery.
  • the subscription content could be unique content or alternatively could be the same content as presented on the 'free to air' channel, only provided at a higher data rate, so enhancing the speed of response and hence user experience.
  • a specific example is in the case of digital television, where a user might subscribe to a service which transmits a film at a higher resolution than the free service in order to get a better quality picture.
  • Another example is a webpage with some data which is only visible to subscribers, e.g. stockmarket data giving yesterday's closing price for all to see and prices updated every minute for subscribing users only.
  • the split channels enhance the response rate of what is otherwise the same information, e.g. that the webpage updates share prices once an hour on the non- subscribed service and every minute on the subscribed service.
  • Another use is in providing common data via a mobile phone network, for example traffic information broadcast to all subscribed users under the control of a particular base station or within a specific cell. The presentation of data within the receiver will adapt depending on whether single or dual sub-channel reception is available, so that if only single channel reception is available, it can still decode the signal if the user has subscribed to the service.
  • OFDM orthogonal frequency division multiplexing
  • a data stream is divided into multiple parallel bit streams at a lower bit rate and these bit streams are used to modulate multiple carriers.
  • a single channel for example at 20MHz, is divided into multiple narrowband sub-carriers.
  • the data streams are divided into symbols of fixed duration. This allows sub channels to be created from a number of these symbols within a time frame structure.
  • the resulting data streams are multiplexed on to the single frequency channel and the receiver time aligns itself to receive a given sub-channel within a time frame structure. Typical frequencies for audio and video data via DAB would be 200MHz or 1.4GHz.
  • this will be multi-media data, presented via a User Interface (UI), typically a browser.
  • UI User Interface
  • Certain elements on the UI will be from one received sub-channel, others from the second.
  • the data content from the two streams is seamlessly integrated from the respective sub-channels into a single user presentation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention se rapporte à un procédé permettant d'améliorer le transfert de données dans un système de communication contenant un émetteur et au moins un récepteurs. Le procédé selon l'invention consiste : à définir, pour au moins des première et seconde sources de données (3, 4), des critères d'accès aux modes non abonné et abonné, respectivement ; à transmettre les première et seconde sources de données, sur un canal de communication monofréquence (9), de l'émetteur au récepteur ou à chacun des récepteurs. La seconde source de données contient le même type de données que la première source de données, mais qui sont transmises à une résolution supérieure, à un débit plus élevé, ou avec une meilleure qualité. La première source de données peut être décodée au niveau des récepteurs fonctionnant aussi bien selon le mode abonné que selon le mode non abonné. La seconde source de données est décodée uniquement au niveau des récepteurs fonctionnant selon le mode abonné. FIG. 1 2 ENTREE DONNEES 5 DISPOSITIF DE SEPARATION DONNEES 6 CODAGE ACCES CONDITIONNEL 7 CODAGE CANAUX 8 EMETTEUR 10 RECEPTEUR 11 DECODAGE ACCES CONDITIONNEL 12 DISPOSITIF DE FUSION DONNEES 13 PRESENTATION DONNEES
PCT/GB2004/004368 2003-11-19 2004-10-14 Procede d'amelioration du transfert de donnees WO2005055603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0327030.3 2003-11-19
GB0327030A GB2408402A (en) 2003-11-19 2003-11-19 Transmission of non-encrypted data with encrypted data to entice subscription

Publications (1)

Publication Number Publication Date
WO2005055603A1 true WO2005055603A1 (fr) 2005-06-16

Family

ID=29764153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/004368 WO2005055603A1 (fr) 2003-11-19 2004-10-14 Procede d'amelioration du transfert de donnees

Country Status (2)

Country Link
GB (1) GB2408402A (fr)
WO (1) WO2005055603A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014210396A1 (fr) * 2013-06-26 2014-12-31 Google Inc. Bouquets de chaînes à abonnement
US9185594B2 (en) 2007-09-12 2015-11-10 Qualcomm Incorporated Capacity increasing devices and methods for wireless communication
TWI508481B (zh) * 2007-09-21 2015-11-11 Qualcomm Inc 無線通信之容量增大裝置及方法
US10185486B2 (en) 2013-02-26 2019-01-22 Google Llc Method for one-click subscribing to multiple channels of information on a single topic
US11431990B2 (en) 2015-06-04 2022-08-30 Thales Holdings Uk Plc Video compression with increased fidelity near horizon

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696121A1 (fr) * 1994-07-25 1996-02-07 AT&T Corp. Méthode et système pour assurer le paiement de royalties pour les données délivrées par un réseau
US20020051581A1 (en) * 2000-06-19 2002-05-02 Seiichi Takeuchi Video signal encoder and video signal decoder
US20030050070A1 (en) * 2001-03-14 2003-03-13 Alex Mashinsky Method and system for dynamic spectrum allocation and management
US20030063740A1 (en) * 2001-08-20 2003-04-03 Sagar Richard B. Method of providing multilevel quality signals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655802B1 (fr) * 1989-12-08 1992-01-24 Europ Rech Electr Lab Procede de promotion d'emissions de television a peage et dispositif de mise en óoeuvre.
FI97928C (fi) * 1994-03-21 1997-03-10 Nokia Technology Gmbh Menetelmä digitaalisessa muodossa siirrettävän televisiolähetyksen salaamiseksi
FR2718594B1 (fr) * 1994-04-06 1996-04-26 France Telecom Procédé de diffusion de programmes à accès conditionnel progressif et à séparation du flux d'information.
JPH08307848A (ja) * 1995-04-27 1996-11-22 Pioneer Electron Corp Ｃａｔｖシステム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696121A1 (fr) * 1994-07-25 1996-02-07 AT&T Corp. Méthode et système pour assurer le paiement de royalties pour les données délivrées par un réseau
US20020051581A1 (en) * 2000-06-19 2002-05-02 Seiichi Takeuchi Video signal encoder and video signal decoder
US20030050070A1 (en) * 2001-03-14 2003-03-13 Alex Mashinsky Method and system for dynamic spectrum allocation and management
US20030063740A1 (en) * 2001-08-20 2003-04-03 Sagar Richard B. Method of providing multilevel quality signals

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9185594B2 (en) 2007-09-12 2015-11-10 Qualcomm Incorporated Capacity increasing devices and methods for wireless communication
US9313683B2 (en) 2007-09-12 2016-04-12 Qualcomm Incorporated Capacity increasing devices and methods for wireless communication
US9479960B2 (en) 2007-09-12 2016-10-25 Qualcomm Incorporated User diversity for muros callers
US9622106B2 (en) 2007-09-12 2017-04-11 Zhi-Zhong Yu Capacity increasing devices and methods for wireless communication
TWI508481B (zh) * 2007-09-21 2015-11-11 Qualcomm Inc 無線通信之容量增大裝置及方法
US10185486B2 (en) 2013-02-26 2019-01-22 Google Llc Method for one-click subscribing to multiple channels of information on a single topic
WO2014210396A1 (fr) * 2013-06-26 2014-12-31 Google Inc. Bouquets de chaînes à abonnement
US9578382B2 (en) 2013-06-26 2017-02-21 Google Inc. Subscribable channel collections
US9866914B2 (en) 2013-06-26 2018-01-09 Google Llc Subscribable channel collections
US11431990B2 (en) 2015-06-04 2022-08-30 Thales Holdings Uk Plc Video compression with increased fidelity near horizon

Also Published As

Publication number Publication date
GB2408402A (en) 2005-05-25
GB0327030D0 (en) 2003-12-24

Similar Documents

Publication Publication Date Title
US7280660B2 (en) Receiver
US7283817B2 (en) Receiver
KR101829844B1 (ko) 하이브리드 방송 서비스를 프로세싱하는 장치, 하이브리드 방송 서비스를 프로세싱하는 방법
KR101801590B1 (ko) 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법 및 방송 신호 수신 방법
CA2518034C (fr) Methode, systeme et entite de reseau pour indiquer un mode hierarchique pour des flux de transport transportes dans une transmission a large bande
CN102119528B (zh) 用于跨越多个数字广播信道的多个服务的数据更新的信道跳跃方案
CN101438520B (zh) 无线设备中的多节目观看
CN110234021B (zh) 发送和接收广播信号的装置及发送和接收广播信号的方法
AU2001283885A1 (en) Receiver
US20050289586A1 (en) Method and apparatus for controlling display of digital broadcasting
KR100842538B1 (ko) 복수의 주파수 채널들을 사용하는 디지털 방송 시스템에서전자 프로그램 가이드를 송수신하는 방법 및 장치
JP2007043739A (ja) コンテンツ記述情報と接続情報とを提供する方法
EP0967804A2 (fr) Système de distribution d'information
US20070055991A1 (en) Electronic program guide apparatus and method in digital broadcasting system
US20070067796A1 (en) Method and apparatus for providing advertisement in digital broadcasting system
WO2005055603A1 (fr) Procede d'amelioration du transfert de donnees
US7548518B2 (en) Receiver
KR100926911B1 (ko) 디지털 방송에서 광고를 제공하는 방법 및 시스템
US8813128B2 (en) Method and system for providing a multi-decoder based channel surfing service
KR100912236B1 (ko) 채널 서핑 시간의 단축이 가능한 디지털 방송 서비스 제공방법 및 시스템
Drury The impact of MPEG and DVB standards on broadcasting

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase