Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Iniciar sesión
Usuarios de lectores de pantalla: deben hacer clic en este enlace para utilizar el modo de accesibilidad. Este modo tiene las mismas funciones esenciales pero funciona mejor con el lector.

Patentes

  1. Búsqueda avanzada de patentes
Número de publicaciónCN100449458 C
Tipo de publicaciónConcesión
Número de solicitudCN 03823813
Número de PCTPCT/US2003/027985
Fecha de publicación7 Ene 2009
Fecha de presentación5 Sep 2003
Fecha de prioridad5 Sep 2002
También publicado comoCN1688957A, EP1540936A2, EP1540936A4, WO2004023785A2, WO2004023785A3
Número de publicación03823813.6, CN 03823813, CN 100449458 C, CN 100449458C, CN-C-100449458, CN03823813, CN03823813.6, CN100449458 C, CN100449458C, PCT/2003/27985, PCT/US/2003/027985, PCT/US/2003/27985, PCT/US/3/027985, PCT/US/3/27985, PCT/US2003/027985, PCT/US2003/27985, PCT/US2003027985, PCT/US200327985, PCT/US3/027985, PCT/US3/27985, PCT/US3027985, PCT/US327985
Inventores特里·W·洛克里奇, 廷 王, 罗伯特·E·特齐宾斯基
Solicitante汤姆森特许公司
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos:  SIPO, Espacenet
Method and system for providing a cache guide
CN 100449458 C
Resumen  traducido del chino
一种向客户提供高速缓存指南的方法和系统。 A cache directory providing customers a method and system. 所述高速缓存指南包含可用指南数据的子集。 The cache directory contains a subset of the available guide data. 所述可用指南数据被本地存储在微型头端单元(12)中,并且所述子集被存储在远程机顶盒(44)的高速缓冲存储器中。 The guide data is available in micro headend unit (12), and the subset is stored locally in the cache memory stored in the remote set-top box (44).
Reclamaciones(16)  traducido del chino
1.一种提供节目指南的方法,所述方法包括步骤: 从内容提供者获取节目指南数据(52); 本地存储所获取的节目指南数据; 将本地存储的节目指南数据的子集发送至远程终端(58); 从远程终端接收对子集更新的请求(62),其中该更新请求是由于频道改变而产生的; 访问本地存储的节目指南以生成所请求的更新;和将所述更新发送至远程终端。 1. A method of providing a program guide, the method comprising the steps of: obtaining from the content provider program guide data (52); storing the acquired local program guide data; sending subset locally stored program guide data to a remote terminal (58); receiving the subset update request from a remote terminal (62), wherein the update request is generated due to the channel change; update access locally stored program guide to generate a requested; and transmitting said updated to the remote terminal.
2. 如权利要求l所述的方法,其中远程终端是机顶盒(44)。 L 2. The method according to claim, wherein the remote terminal is a set top box (44).
3. 如权利要求l所述的方法,其中本地存储的节目指南数据的子集包含用于本地存储的节目指南中的所有频道的频道ID和用于本地存储的节目指南中的频道之一的详细节目信息。 3. The method of claim l, wherein the locally stored program guide data comprises a subset of the locally stored program guide for the channels of the channel ID and all locally stored program guide for the channels Detailed program information.
4. 如权利要求l所述的方法,还包括步骤: 从内容提供者周期获取对节目指南数据的更新(54);和改变本地存储的节目指南数据,从而本地存储的节目指南符合所述更新(54)。 4. The method of claim l, further comprising the steps of: obtaining from the content provider periodic updates of the program guide data (54); and a changing locally stored program guide data to the locally stored program guide conforms to the updates (54).
5. 如权利要求4所述的方法,还包括步骤:如果从内容提供者接收的更新改变本地存储的节目指南数据中的数据, 则向远程终端发送新的子集,所述本地存储的节目指南数据包含在先前发送至终端的子集中。 5. The method of claim 4, further comprising the steps of: receiving from the content provider if the update changes the data locally stored program guide data, a new subset is sent to a remote terminal, said locally stored program Directory data contained in previously transmitted to the terminal of the subset.
6. —种提供节目指南的方法,所述方法包括步骤: 分配高速緩冲存储器以存储节目指南数据的子集(56); 获取节目指南数据的子集(58);将节目指南数据的子集存储在高速緩冲存储器中;处理所存储的节目指南数据的子集以生成节目指南;从客户接收频道改变请求;请求节目指南数据的第二子集;接收节目指南数据的第二子集;和将节目指南数据的第二子集存储在高速緩沖存储器中。 6. - species providing a program guide, the method comprising the steps of: allocating a subset of the cache memory to store the program guide data (56); a subset of the data acquisition program guide (58); the program guide data sets stored in the cache memory; processing the stored subset of program guide data to generate a program guide; channel change request received from the client; a second subset of the requested program guide data; receiving a second subset of program guide data ; and the second subset of program guide data stored in the cache memory.
7. 如权利要求6所述的方法,还包括步骤: 向客户显示节目指南。 7. The method of claim 6, further comprising the steps of: displaying the program guide client.
8. 如权利要求6所述的方法,其中所述节目指南数据被远程存储在微型头端单元(12)中。 8. The method of claim 6, wherein the program guide data in miniature head end unit (12) is stored in the remote.
9. 一种提供节目指南的系统,所述系统包括:用于从内容提供者获取节目指南数据的装置(18); 用于本地存储所获取的节目指南数据的装置(22);用于将本地存储的节目指南数据的子集发送至远程终端的装置(12, 36); 用于从远程终端接收对子集更新的请求的装置(12),其中所述更新请求是由于频道改变而产生的;用于访问本地存储的节目指南以生成所请求的更新的装置(30);和用于将所述更新发送至远程终端的装置(28, 30, 36)。 9. A method of providing program guide system, said system comprising: means for obtaining from the content provider's program guide data means (18); means for locally storing the acquired program guide data (22) used; for locally stored program guide subset of the data transmitted to the remote terminal apparatus (12, 36); means (12) receiving the subset from the remote terminal to request updated, wherein the update request is generated due to a channel change ; and means (30) for accessing the locally stored program guide to generate the requested update; and means for transmitting the update to the remote terminal apparatus (28, 30, 36).
10. 如权利要求9所述的系统,其中所述远程终端是机顶盒(44)。 10. The system of claim 9, wherein the remote terminal is a set top box (44).
11. 如权利要求9所述的系统,其中所述本地存储的节目指南数据的子集包含用于本地存储的节目指南中的所有频道的频道ID和用于本地存储的节目指南中的频道之一的详细节目信息。 11. The system of claim 9, wherein the subset of the locally stored program guide data contains channel ID and program guide for locally stored locally stored program guide for all channels in the channel For more information on one of the program.
12. 如^L利要求9所述的系统,还包括:用于从内容提供者周期性地获取对节目指南数据的更新的装置(18);和用于改变本地存储的节目指南数据从而本地存储的节目指南符合所述更新的装置(30)。 ^ L 12. The system of claims 9, further comprising: means for periodically from the content provider obtaining means for updating the program guide data (18); and a program guide for changing the locally stored data so that the local compliance with the program guide storage means (30) said updated.
13. 如权利要求12所述的系统,还包括:用于如果从内容提供者接收的更新改变本地存储的节目指南数据中的数据,则向远程终端发送新的子集的装置(28, 30, 36),所述本地存储的节目指南数据包含在先前发送至终端的子集中。 13. The system of claim 12, further comprising: means for data received from the content provider if the update changes locally stored program guide data, the device transmits a new sub-set (28 to a remote terminal, 30 , 36), the locally stored program guide data previously transmitted to the terminal is included in the subset.
14. 一种提供节目指南的系统,所述系统包括:用于分配高速緩冲存储器以存储节目指南数据的子集的装置(44); 用于获取节目指南数据的子集的装置(12, 36); 用于将节目指南数据的子集存储在高速緩冲存储器中的装置(44); 用于处理所存储的节目指南数据的子集以生成节目指南的装置(44); 用于从客户接收频道改变请求的装置(44); 用于请求节目指南数据的第二子集的装置(28, 36, 44);用于接收节目指南数据的第二子集的装置(28, 36, 44);和用于将节目指南数据的第二子集存储在高速緩沖存储器中的装置(44)。 14. A method of providing program guide system, said system comprising: means for dispensing a subset of the cache memory to store the program guide data (44); means for obtaining a subset of program guide data (12 for, 36); for the means (44) a subset of program guide data stored in the cache memory; for processing the stored subset of program guide data to generate a program guide apparatus (44); for the The customer receives a channel change request means (44); means for requesting a second program guide data subset (28, 36, 44); means for receiving a second subset of program guide data (28, 36 used, 44); and a means for storing a second subset of program guide data in the cache memory (44).
15. 如权利要求14所述的系统,还包括: 用于向客户显示节目指南的装置(44)。 15. The system of claim 14, further comprising: means for displaying the program guide to a client (44).
16. 如权利要求14所述的系统,其中所述节目指南数据被远程存储在微型头端单元(12)中。 16. The system of claim 14, wherein said program guide data is stored in mini headend unit (12) in remote storage.
Descripción  traducido del chino

提供高速緩存指南的方法和系统 Cache Directory provides a method and system

技术领域 Technical Field

本发明涉及在多住宅或多租户网络中提供视频服务。 The present invention relates to providing video services in a multi-residential or multi-tenant network. 背景技术 Background

在传统视频系统(例如,卫星、电缆等)中,内容提供者在该系统上向客 In a conventional video system (for example, satellite, cable, etc.), the content provider on the system to the customer

户提供节目指南(其列出了频道ID、节目标题、节目描述等)。 Households to provide program guide (which lists the channel ID, program title, program description, etc.). 传统上,完整的节目指南被存储在每个客户的住宅单元中的消费者预定设备装置(例如机顶盒)上。 Traditionally, the complete program guide booked consumers stored in each customer's dwelling unit facilities and equipment (such as set-top boxes) on. 然而,这一方法的缺陷是节目指南通常非常大(例如6MB)。 However, the defect of this approach is usually a very large program guide (e.g., 6MB). 因此, CPE设备必须具有相对大的存储器并且必须分配大部分的存储器来存储节目指南。 Accordingly, CPE device must have a relatively large memory must be allocated and the majority of memory to store the program guide. 本发明旨在克服该缺陷。 The present invention aims to overcome this drawback.

发明内容 DISCLOSURE

本发明限制了网络机顶盒中的存储器需求,以便使用更小的存储器收集一部分指南和驻留在可访问的网络上的整个指南来減少整个系统成本。 The present invention limits the network set-top box memory requirements for the use of smaller memories to collect part of the guidelines and reside on the network can access the entire directory to reduce the overall system cost. 更具 More

体地,本发明致力于一种用于向客户提供高速緩存指南的方法和系统。 Particularly, the present invention is directed to a method and system to provide high-speed caching guidelines. 该高速緩存指南包含可用指南数据的子集。 The cache directory contains a subset of the available guide data. 所述可用指南数据被本地存储在微型头端单元中,并且所述子集被存储在远程机顶盒的高速緩冲存储器中。 The guide data is available in the head end unit in miniature, and the subset is cached in the local storage remote STB memory.

附图说明在附图中: BRIEF DESCRIPTION OF THE DRAWINGS:

图1是本发明的例证系统图;和 Figure 1 is a system diagram illustration of the present invention; and

图2是图解本发明的节目指南高速緩存处理的流程图。 Figure 2 is a flowchart illustrating a program guide of the present invention, the cache process.

从通过示例给出的下述说明,本发明的特征和优点将变得更明显。 From the following description given by way of example, features and advantages of the present invention will become more apparent.

具体实施方式 DETAILED DESCRIPTION

现在参见图1,示出了按照本发明的原理工作的例证系统10。 Referring now to FIG. 1, it shows examples of the system in accordance with the principles of the present invention work 10. 系统10是集成数字数据系统,用于向多个用户提供宽带、数字视频和服务。 System 10 is an integrated digital data system for providing broadband, digital video and services to multiple users. 更具体而 More specifically

言,系统10集成了用于多个用户的高质量音频和i见频与凄史字IP数据服务。 Words, the system 10 incorporates high-quality audio and i see for multiple users and sad history of the word frequency IP data services. 这种系统设计提供了一个平台,用于运行多个合算的数字服务。 This system is designed to provide a platform for running multiple cost-effective digital services. 系统10被设 System 10 is provided

计为可以升级,因此可以递增地增加不同的数字数据服务。 Counted as can be upgraded, so you can incrementally increase the different digital data services.

系统10包括:微型头端单元12,其中接收、集中和分布数字音频、视频和数据服务;多住宅单元(Multi-Dwelling Unit)和/或多租户单元(Multi-Tenant Unit)( "MxU")网络14 。 System 10 includes: a miniature head-end unit 12, which receives, concentration and distribution of digital audio, video and data services; multi-dwelling unit (Multi-Dwelling Unit) and / or tenant unit (Multi-Tenant Unit) ("MxU") Network 14. 网络14可以位于一个或多个公寓大楼、旅馆或任何其他结构一一其中居住了期望数字音频、视频和数据服务的多个客户。 Network 14 may be located in one or more apartment buildings, hotels or any other structure in which live more than one customer expectations of digital audio, video and data services.

微型头端单元12负责接收数据,提供服务质量("QoS"),提供定制的服务和将数据路由到在MxU网络14中的住宅单元16。 Mini head-end unit 12 is responsible for receiving data, quality of service ("QoS"), to provide customized services and routes the data to the network 14 in MxU 16 dwelling units. 微型头端单元12包括核心视频服务系统18、高级视频服务系统22、与因特网26通信连接的数据服务系统24和QoS开关28。 Mini head-end unit 12 includes 18 core video service system, advanced video services system 22, a data service systems 26 and 24 connected to the Internet to communicate and QoS switch 28.

核心视频服务系统18最好包括与卫星20通信连接的卫星接收器系统19 。 Core Video Service System 18 preferably comprises 20 communication satellites and satellite receiver system connected 19. 卫星接收器系统19能够按照期望服务的客户的数量来定标从卫星20接收的流的数量。 Satellite receiver system 19 in accordance with the number of clients expect service to a given number of standard stream received from the satellite 20. 更具体而言,卫星接收器系统19运行一个组播服务器,以使得在住宅单元16中的网络机顶盒44请求数字数据流。 More specifically, the satellite receiver system 19 runs a multicast server, so that the housing unit 16 in the network set-top box 44 requests the digital data stream. 卫星接收器系统19按照在机架(chassis)中的调谐叶片(tuning blade)的数量来定标直到接收到卫星的所有转发器。 Satellite receiver system 19 according to the number in the rack (chassis) of the tuning vane (tuning blade) to scaling until it receives all satellite transponders. 具有60个转发器的全负荷安装的机架能够处理2.4 Gbps的输入数据率。 Rack has 60 transponders installed to handle the full load input data rate of 2.4 Gbps. 此处,对于适当的组播组,所述机架能够通过接收新用户请求来处理n 个用户。 Here, for the appropriate multicast group, the chassis can handle n users by receiving a new user request. 卫星接收器系统19能够接收卫星信号和以2Gbps的数据率向组播感知开关28输出IP分组。 Satellite receiver system 19 can receive satellite signals and 2Gbps data rate to the multicast detecting switch 28 outputs IP packet. 更具体而言,被发送的IP分组使用QoS(在标准IEEE 證.lp(标题为"Traffic Class Expediting and Dynamic Multicast Filtering")和IEEE 802.lq(标题为"Virtual LAN")中被阐述)来保证迅速地传送分组。 More specifically, IP packets are transmitted using QoS (IEEE standard card .lp (entitled "Traffic Class Expediting and Dynamic Multicast Filtering") and IEEE 802.lq (entitled "Virtual LAN") are set forth in) to ensure rapid transmission of packets. 在卫星接收器系统19上的网络接口是1 Gbps的以太网端口,并且可以扩展到两个1Gbps的以太网端口。 On the satellite receiver system 19 to 1 Gbps network interface is Ethernet port, and can be extended to two 1Gbps Ethernet ports. 卫星接收器系统19的管理系统从客户接收对于节目的请求。 Satellite receiver systems 19 management system receives a request from a client for the program. 所述管理系统使客户选择卫星、转发器和节目ID,并且使卫星接收器系统19向客户提供具体的节目流。 The management system enables customers to choose a satellite, transponder and the program ID, and enable satellite receiver system 19 provides a specific program flow to customers. 所述管理系统也支持组播以节省带宽。 The management system also supports multicast to save bandwidth. 虽然卫星接收器系统19和卫星20在图1中被图解为内容提供介质,但是在本发明的范围内也考虑使用用于提供内容的其他介质(例如电缆、光纤等)。 While satellite receiver systems 19 and satellites 20 are illustrated in Figure 1 provides media content, but within the scope of the present invention may also consider providing content for other media (such as cable, fiber, etc.).

高级视频服务系统22是一个平台,它与卫星接收器系统19结合工作而使能附加的数字视频服务。 Advanced Video Services System 22 is a platform, which work in conjunction with a satellite receiver system 19 and the enable additional digital video services. 按照使用服务的客户的数量来定标高级视频服务系统22。 According to the number of customers using the service to the scaling of advanced video services system 22. 例如,当客户数量增加时,系统22可以要求更多的服务器30。 For example, when the number of customers, the system may require more servers 22 30. 所提供的服务类型特别是视频点播、近视频点播、有限视频点播、尼耳森收视 The type of services provided, especially video on demand, near video on demand, video on demand is limited, Nepal ear Sen ratings

率、时移、自动记录、个人视频记录("PVR")等。 Rate, time shift, automatic recording, personal video recorder ("PVR") and so on. 高级视频系统22包括条件访问系统(未示出),它用于被记录到硬盘驱动器32的节目流。 Advanced Video system 22 includes access system (not shown), which is recorded into the program stream for the hard disk drive 32 conditions. 当记录时, 解密从卫星接收器系统19接收的原始节目流,提取画面数据,并且将新的节目流(包括所提取的画面数据)力。 When recording, the satellite receiver decrypts the original program stream received by the system 19 to extract picture data, and a new program stream (including the extracted screen data) force. 密和存储到硬盘驱动器32。 Secret and stored on the hard drive 32. 网络提供者的条件访问系统在高级视频系统服务器30被终止,并且其后使用新的条件访问系统。 Conditional access system network provider in advanced video server system 30 is terminated, and thereafter using the new conditional access system.

按照使用因特网服务的客户的数量和因特网服务所要求的速度或带宽来定标数据月l务系统24。 According to the speed or bandwidth Internet services and Internet services the number of customers required to calibration data service system 24 l month.

微型头端单元12可以包括千兆QoS以太网开关28(大系统的介质所需要的),它是可升级的,并且可以在小型安装情况下被去除。 Mini head-end unit 12 may include a Gigabit QoS Ethernet switch 28 (large system of media required), it is scalable and can be removed at a small installation. 本领域内的技术人员知道,当选择开关28时所考虑的一些问题是所提供的服务类型和多少在MxU网络14中的住宅单元16需要支持。 Those skilled in the art know that some problems when the selector switch 28 to be considered is the type of service provided and the number of residential units in 14 of the 16 MxU network needs to support. 开关28提供了在卫星接收器系统19、高级视频服务系统22和数据服务系统24之间的连接。 Switch 28 provides a connection between satellite receiver system 24 19 22 Advanced Video Service System and data services system. 开关28也提供了从微型头端单元12到MxU网络14的连接。 Switch 28 also provides a connection from the mini head-end unit 12 to MxU network 14. 开关28支持全双工千兆因特网接口,并且可以升级以支持各种大小的系统。 Switch 28 supports full-duplex Gigabit Internet interface, and can be upgraded to support all sizes of systems. 开关28支持在IEEE 802.1p和802.1q标准中给出的QoS。 Switch 28 supports QoS IEEE 802.1p and 802.1q standards in given. QoS便利了在开关28和高级^L频服务系统22和数据服务系统24之间的通信。 QoS facilitate the communication between the switch 28 and 24 ^ L High-frequency service system 22 and data services system. 更具体而言,与来自数据服务系统24的数据相比,对来自视频服务系统18和高级视频服务系统22的视频数据提供更高的优先权。 More specifically, as compared with the data from the data services system 24, the video data 18 and Advanced Video Services System services from the video system 22 provides a higher priority. 例如,当同时请求视频数据和因特网数据时,首先发送视频数据, 并且或者如果可以获得足够的带宽则同时发送因特网数据,或者当足够的带宽可以获得时在以后的时间发送因特网数据。 For example, when video data and the Internet simultaneously request data, the first to send video data, and or if you can get enough bandwidth to simultaneously transmit Internet data, or when sufficient bandwidth is available to send Internet data at a later time.

MxU网络14包括服务架(service rack)34和住宅单元16。 MxU network includes 14 residential units and 34 service rack (service rack) 16. 服务架34按照在MxU网络14中的住宅单元16的数量可升级,并且位于其中在MxU网络14中的电话线集中在一起的中心点中。 Service network carrier 34 in accordance with the MxU 14 16 Number of dwelling units can be upgraded, and is located where the MxU network 14 telephone lines together in the center. 在系统10中的MxU网络14的数量控制所需要的服务架34的数量。 The number of the number system 10 MxU network control 14 of the required service carrier 34. 优选的是,对于在多网络环境(例如多建筑集合体)中的每个网络14(例如建筑物)提供服务架34。 Preferably, for in a multi-network environment (e.g., multi-building assembly) in each network 14 (e.g., a building) serving frame 34. 每个服务架34包括VDSL开关36,它使用筒易老式电话业务("POTS")分路器38来将POTS 服务40与经由1 Gbps电话线从微型头端单元12的QoS开关28接收的数字视频、音频和数据组合。 Each service rack 34 includes a VDSL switch 36, it is easy to use cartridge Old Telephone Service ("POTS") POTS splitter 38 to the service 40 via a 1 Gbps phone line and QoS switch 12 receives from the head-end unit 28 a digital micro- video, audio and data combination. 虽然VDSL开关36被图解为以太网QAM开关,但是应当注意使用任何其他的以太网开关被认为在本发明的范围内。 Although VDSL switch 36 is illustrated as an Ethernet QAM switch, it should be noted the use of any other Ethernet switch is considered within the scope of the present invention.

在系统10中,要求预订数字服务的每个住宅单元16具有消费者预定设备(consumer premise equipment)( "CPE")装置。 In the system 10, reservation requested digital service consumer each dwelling unit 16 having a predetermined device (consumer premise equipment) ("CPE") apparatus. 用于给定的住宅单元16的CPE装置根据客户的服务预订可以包括调制解调器42、网络机顶盒("STB" )44、调制解调器42和STB 44两者、或集成的调制解调器和STB 单元(未示出)。 For a given dwelling unit CPE device 16 according to the customer's service book may include a modem 42, a network set-top box ("STB") 44, modem 42 and STB 44 both, or integrated modem and STB unit (not shown) . 本发明的例证系统10至少要求调制解调器42,用于接收数字数据、音频和视频服务。 Illustration system 10 of the invention, at least the requirements of the modem 42 for receiving digital data, audio and video services. 调制解调器42可以经由电话线连接到开关36,并且终止VDSL线。 Modem 42 may be connected to a telephone line via a switch 36, and terminates the VDSL line. 调制解调器42也具有POTS分路器(未示出)和用于电话服务的连接46。 Modem 42 also has a POTS splitter (not shown) for connecting 46 phone services. 调制解调器42具有以太网端口,用于提供对音频和视频服务的计算才几48因特网访问和网络STB44访问。 42 modem with an Ethernet port for audio and video provide computing services only a few 48 STB44 Internet access and network access.

虽然电话线被示出为被用作在住宅单元16和微型头端单元12之间的通信介质,但是电缆和无线网络也被认为在本发明的范围内。 Although phone lines are shown as being used in the housing unit 16 and the micro-tip unit between the communication medium 12, but the cable and wireless networks are considered within the scope of the present invention.

总之,系统10提供了用于向居住在住宅单元16的客户提供特别传送数字音频、数字视频、高速因特网访问、电话服务、安全服务等的架构,并且提供收入流和平台以向系统提供者增加递增的或新的服务。 In short, the system 10 provides for the customers who live in special housing unit 16 transmit digital audio, digital video, high-speed Internet access, telephone service, security services, etc., and provide the revenue stream and platform providers to increase system incremental or new services.

现在参见图2,示出了节目指南高速緩存处理50。 Referring now to Figure 2, shows a cache processing program guide 50. 一旦启动系统IO,在步骤52,微型头端单元12从核心视频服务系统18获取节目指南。 Once activated the system IO, at step 52, the miniature head-end unit 12 acquires program guide system 18 from the core video services. 应当注意, 在一些情况中,指南可以大于6Mbyte并且可以要求扫描多个频道或者应答器来收集整个指南。 It should be noted that in some cases, may be greater than 6Mbyte guidelines and can request to scan multiple channels or transponders to collect the entire directory. 微型头端单元12本地存储节目指南,并且在步骤54,当核心视频服务系统18提供新的指南数据时周期地更新节目指南。 Miniature head end unit 12 local storage program guide, and in step 54, when the core of Video Service System 18 provides a new directory data periodically update the program guide. 在网络STB 44引导STB44之后,在步骤56,建立随机高速緩存,并且向微型头端单元12请求节目指南数据。 After a network STB 44 guide STB44, at step 56, to establish random cache, and the micro-tip unit 12 requests the program guide data. 响应于该请求,在步骤58,微型头端单元12向STB 44 发送本地存储的节目指南的子集。 In response to this request, in step 58, microcomputer 12 transmits to the head end unit STB 44 locally stored program guide subset. 该子集保存了足够的信息以便允许客户选择不同的频道,并提供在当前正在观看的频道周围的详细快照(snapshot)。 This subset save enough information to allow customers to choose different channels, and provides a detailed snapshot of the current channel being viewed around the (snapshot). 在步骤60, STB44将接收到的子集存储在它的高速緩沖存储器中。 In step 60, STB44 received subset stored in its cache. 之后,在客户通过节目指南导航,切换频道等时,在步骤62, STB44将向微型头端单元12请求对所存储的节目指南子集的更新。 Afterwards, when the client navigate through the program guide, change channels, etc., at step 62, STB44 mini head-end unit 12 will request an update on the stored program guide subset. 由于微型头端单元12维持完整和当前的节目指南,因此与如杲STB44必须通过扫描节目流、频道和/或核心视频服务系统18的应答器来收集这种更新相比,对更新请求的响应更快。 Since the mini head-end unit 12 to maintain the integrity and the current program guide, and is therefore such as Gao STB44 must flow through the scanning program, channels and / or core video service system to collect 18 transponders compared to this update, the response to the update request faster.

应当注意,微型头端单元12存储的节目指南可被增加经由数据服务系统24从因特网26获取的附加信息(例如,节目数据、视频剪辑等...)。 It should be noted that the program guide storage 12 mini headend unit may be adding additional information data acquired from the service system 24. Internet 26 (e.g., program data, video clips, etc ...) via.

虽然已经结合在此公开的实施例说明了本发明,应当明白,上述说明意欲图解说明,并且不限制所附权利要求所限定的本发明的范围。 Although the embodiment has been incorporated in this description of the present invention is disclosed, it should be understood that the above description is intended to illustrate and not limit the scope of the appended claims the present invention as defined.

Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
CN1338871A16 Ago 20006 Mar 2002北京华诺信息技术有限公司Method for multiplexing tuner in bidirectional cable system for cable TV
US50382115 Jul 19896 Ago 1991The Superguide CorporationMethod and apparatus for transmitting and receiving television program information
US54187826 Ene 199423 May 1995Scientific-Atlanta, Inc.Methods and apparatus for providing virtual service selection in a multi-service communications system
US561927413 May 19948 Abr 1997Starsight Telecast, Inc.Television schedule information transmission and utilization system and process
US56301195 May 199513 May 1997Microsoft CorporationSystem and method for displaying program listings in an interactive electronic program guide
US590594218 Feb 199718 May 1999Lodgenet Entertainment CorporationMultiple dwelling unit interactive audio/video distribution system
Clasificaciones
Clasificación internacionalH04N7/16, H04N5/445, H04N7/173, H04N5/50, H04N, H04N1/00, G06F3/00, G06F13/00
Clasificación cooperativaH04N21/4331, H04N21/472, H04N21/47, H04N21/2225, H04N21/84, H04N7/162, H04N21/2143, H04N7/17318, H04N5/50, H04N21/6405, H04N21/6131, H04N21/2396, H04N21/23895
Clasificación europeaH04N21/2389E, H04N21/239H1, H04N21/61D4, H04N21/433C, H04N21/84, H04N21/472, H04N21/214B, H04N21/6405, H04N21/2225, H04N7/16E, H04N7/173B2
Eventos legales
FechaCódigoEventoDescripción
26 Oct 2005C06Publication
21 Dic 2005C10Request of examination as to substance
7 Ene 2009C14Granted