WO2001056297A1 - Système de stockage et de distribution de vidéo domestique - Google Patents

Système de stockage et de distribution de vidéo domestique Download PDF

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Publication number
WO2001056297A1
WO2001056297A1 PCT/US2001/002628 US0102628W WO0156297A1 WO 2001056297 A1 WO2001056297 A1 WO 2001056297A1 US 0102628 W US0102628 W US 0102628W WO 0156297 A1 WO0156297 A1 WO 0156297A1
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WO
WIPO (PCT)
Prior art keywords
signals
internet
compnsmg
broadcast stream
remote receivers
Prior art date
Application number
PCT/US2001/002628
Other languages
English (en)
Inventor
Rex Naden
Original Assignee
Atheros Communications, Inc.
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 Atheros Communications, Inc. filed Critical Atheros Communications, Inc.
Priority to AU2001229774A priority Critical patent/AU2001229774A1/en
Publication of WO2001056297A1 publication Critical patent/WO2001056297A1/fr

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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]
    • H04N21/40—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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
    • H04N21/41265—The peripheral being portable, e.g. PDAs or mobile phones having a remote control device for bidirectional communication between the remote control device and client device
    • 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
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • 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
    • H04N21/23614—Multiplexing of additional data and video streams
    • 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
    • H04N21/2365—Multiplexing of several video streams
    • 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
    • H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
    • 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
    • H04N21/4347—Demultiplexing of several video streams
    • 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
    • H04N21/4348—Demultiplexing of additional data and video streams
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • 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

Definitions

  • the present invention relates to video dist ⁇ bution and, more particularly, to a system for sto ⁇ ng and wirelessly transporting video signals throughout the home.
  • the p ⁇ or methods require a separate set of cables for providing interactive TV or Internet access signals to the different
  • An object of the present invention is to overcome the prior art problems in providing transport and storage of both TV and Internet signals throughout the home.
  • Another object is to provide a means for transporting and stonng both TV and Internet signals throughout the home that does not require separate cabling for TV and Internet signals.
  • Yet another object of the invention is to provide a means for stonng both TV and Internet signals that is accessible and usable by all TV sets in a home.
  • the invention provides for wireless distribution of signals from direct-to-home satellite services and Internet services.
  • antenna dishes outside the home are connected to a master set-top box (MSTB), which is connected to the mam TV in the home.
  • MSTB master set-top box
  • the coax cables from the antenna dishes are terminated in a switch box which can be either manually or electronically controlled.
  • the output of the switch box is connected to one or more 6-MHz TV tuners, which are used to down convert the wide band signal containing up to 175 channels into the desired 6 MHz baseband s ⁇ gnal(s).
  • Each desired baseband signal is then demodulated and demultiplexed into one or more MPEG2 audio/video signal program streams or Internet IP streams
  • the MSTB may also receive signals from a conventional Internet access means such as a telco line, xDSL, or cable modem.
  • the program and Internet streams are combined in a multiplexer that then aggregates all the selected streams for accessibility by the various TV sets in the home.
  • TV and Internet signals are fed both to the local TV set and to a base station radio transceiver.
  • the transceiver sends the desired information to the other TV sets via local antennas and slave set top boxes (SSTBs)
  • SSTB contains a mobile radio transceiver and thus becomes a wireless terminal to the wireless base station transceiver in the MSTB. This terminal can be used for either traditional or interactive TV viewing and/or Internet access.
  • the MSTB can further include a video memory system (VMS) to provide centralized storage of video and/or Internet streams for shared access and use by TVs throughout the home.
  • VMS video memory system
  • the functions of the master set-top box (MSTB) are included in a house side box (HSB) located outside the home, thereby reducing the need for hardware in the home. Additionally, by introducing only limited hardware inside the home, the distances of the wireless links may be advantageously reduced.
  • the present invention provides a flexible approach to the distnbution of TV and Internet signals throughout the home. User convenience is enhanced by a seamless management of reception, transmission, storage and control. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates a system for distnbuting satellite TV and Internet signals throughout a home in accordance with the pnnciples of the invention
  • FIG. 2 illustrates a master set top box that can be used m the system shown m FIG. 1 m accordance with the invention
  • FIG. 3 illustrates a slave set top box that can be used in the system shown in FIG. 1 in accordance with the invention
  • FIG. 4 illustrates an alternative embodiment of a master set top box that can be used in the system shown in FIG. 1 so as to further provide storage of satellite TV and Internet signals m accordance with the invention
  • FIG 5 illustrates an alternative embodiment of a master set top box that can be used in the system shown in FIG 1 so as to further provide storage of satellite TV and Internet signals (both wireless and wire-line) in accordance with the invention
  • FIG 6 illustrates an alternative embodiment of a system for distributing satellite TV and Internet signals throughout a home in accordance with the principles of the invention
  • FIG. 7 illustrates a house side box that can be used in the system shown in FIG 6 accordance with the invention
  • FIG 8 illustrates a slave set top box that can be used m the system shown m FIG. 6 in accordance with the invention
  • FIGS. 9A and 9B respectively illustrate alternative embodiments of the invention wherein cabling is completely or partially eliminated from the home.
  • FIG. 1 illustrates an exemplary implementation of the invention.
  • N small Direct to Home television receiver dish antennas 102-1 to 102-N are located outside the home 104. It should be noted that in some cases, such as with the Hughes DirecTV system, there are three satellites always at 101 degrees west longitude so only one dish 102 is needed. In other cases, such as with the Echostar system, more than one fixed dish may be needed to gather signals from multiple satellites 130. It should be further apparent that the present invention is not limited to use in a home, but can be applied to other environments where the video distnbution and stonng objects of the invention are desired, such as, for example, apartment buildings, bars and restaurants, and offices. Moreover, although it is believed that the advantages of the invention are particularly evident with satellite TV signals, other similar wideband digital TV signals can be distnaded according to the invention.
  • Internet satellite receiver dish 122 for providing two-way Internet satellite services; such services may or may not also include TV broadcast links. It should be noted that while
  • FIG. 1 Internet satellite services are illustrated in FIG. 1, other conventional means for providing two-way
  • Internet services are also possible in accordance with the invention, such as by telephone company (Telco) POTS, Telco xDSL, cable modems, etc.
  • Telco telephone company
  • Telco xDSL Telco xDSL
  • cable modems etc
  • the antenna dishes each contain one or two Low Noise Blocks (LNB) 106 which are pre- amps for the wideband satellite signal
  • LNB Low Noise Blocks
  • Two LNBs are used for one dish in case both ho ⁇ zontal and vertically pola ⁇ zed RF signals are desired
  • the LNBs are connected to (optional) m-lme wideband amplifiers (e g RCA C803, not shown), which are in turn connected to the master set-top box
  • These cables are preferably of the large va ⁇ ety, e g RG-6
  • N+l to 2(N+1) cables 108 are needed
  • the MSTB 110 is connected to the main TV 112 in the home As will be descnbed in more detail below, inside the MSTB 110, the coax cables from the TV receivers 102 are terminated in a switch box that can be either manually or electronically controlled The output of the switch box is connected to one or more 6-MHz TV tuners, which are used to down-convert the wide band signal containing up to 175 channels into the desired 6 MHz baseband signal. The desired baseband signal is then demodulated and demultiplexed into one or more MPEG2 audio/video signal program streams or EP streams The program or IP streams are combined in a multiplexer that then aggregates all the selected program or IP streams for accessibility by the vanous TV sets in the home 104 The multiplexer feeds TV and Internet signals to both the local TV set 112 and to a base station radio transceiver The transceiver sends the desired information to the other TV sets 114 via local antennas 124 and slave set top boxes (SSTBs) 116 Antennas 124 are preferably fixed directional
  • One of the program streams can be fed to mam TV 112, which is near the MSTB 110 MPEG2 and AC3 decoders are located either in the MSTB 110 or the TV 112, or both
  • the TV will typically be able to exhibit more than one simultaneous picture (e.g. Picture in Picture, array of pictures)
  • Each SSTB 116 contains a mobile radio transceiver and thus becomes a wireless terminal to the wireless base station transceiver in the MSTB 1 10. This terminal can be used for either traditional or interactive TV viewing and/or Internet access.
  • a downlink signal 118 contains the video transport streams requested by the SSTB 116 and an Internet downlink
  • An uplmk signal 120 contains the control signals (for controlling the MSTB tuner, etc.) and an Internet access uplmk.
  • the aggregate data rate for the system is 100 Mb/s, which by means of the wireless protocol software, may be divided any number of useful ways. Five remote SSTBs 1 16 would require an aggregate bandwidth of about 100 Mb/s (assuming the downlinks are distributed between 3 Mbps and 30 Mbps), which is withm the capability of the 100 Mbps aggregate bandwidth.
  • FIG. 2 further illustrates a master set top box which can be an implementation of MSTB 110 in accordance with the p ⁇ nciples of the invention.
  • MSTB 110 includes RF switch 202, tuners 204, demux chains 206-1 to 206-M, mux 208, Internet access modem 210, wireless protocol converter 212, and base station radio transceiver 214.
  • Local set interface 216 can also be included in MSTB 110 as shown in this example. Alternatively, some or all of the functionality of local set interface 216 can be incorporated within TV set 112, which may be either a combination of set top box converter plus TV display or an integrated TV receiver.
  • RF switch 202 can be either manually or electronically controlled to select a receiver 102 from which to obtain TV signals.
  • RF switch 202 is electronically controlled by control signals o ⁇ ginatmg from the
  • the selected output of the RF switch 202 is provided to one or more 6-MHz TV tuners 204, which are used to down-convert the wide band signal containing up to 175 channels into the desired 6
  • MHz baseband signal i.e., the baseband signal of the desired one of the 175 channels.
  • the TV tuners 204 can be implemented by, for example, conventional can-type tuners from Alps or a vanety of vendors, or electronic tuners from Microtune.
  • the desired signal is indicated and controlled by the tuner control signals onginatmg from the SSTBs 116 and local set interface 216.
  • the 6MHz baseband signal from one of tuners 204 is then provided to an associated one of demux chains 206-1 to 206-M.
  • the resulting signal consists of MPEG2 Transport streams that in turn can contain one or more MPEG2 audio/video packetized elementary streams (i.e., one for each program) as desc ⁇ bed in the MPEG-2 standard ISO/IEC 11171- 1 : Systems (Nov 1991).
  • the transport streams are 23 and 30 Mbps, depending on the satellite.
  • multiple demux chains 206 are provided for each tuner.
  • the demux chains 206 can be implemented by, for example, chip sets provided by ST, LSI Logic, Philips/VLSI, and others.
  • CA Conditional access
  • POD Point of Deployment
  • the decoded streams are combined in multiplexer 208 that aggregates all the selected program streams and Internet streams for access by the various TV sets in the home 104
  • Multiplexer 208 can be implemented by, for example, creating a new MPEG-2 transport stream which is a merged version of the MPEG-2 streams which feed such multiplexer.
  • the multiplexer 208 feeds TV and Internet signals to both the local TV set 112 and to base station radio transceiver 214
  • the multiplexer 208 may optionally include conditional access (CA) encryption means if for example the MSTB 1 10 is implementing a CA procedure that requires CA decryption by the SSTBs 1 16 (e.g , for adult content or a subsc ⁇ ption service).
  • CA conditional access
  • the transceiver 214 sends the desired information to the other TV sets 114 via local antennas 124 and slave set top boxes (SSTBs) 116
  • Base station transceiver 214 is preferably any product developed according to the HiperLAN and H ⁇ perLAN/2 standards for high performance radio local area networks, which standards are described in, for example, G. A. Halls, "HIPERLAN: the high performance radio local area network standard," Electronics & Communication Engineering Journal, Dec 1994, pp. 289-296 and M. Johnsson, "HiperLAN/2 - The Broadband Radio Transmission Technology Operating in the 5 GHz Frequency Band,” (1999).
  • Internet access modem 210 can be implemented by, for example, a two-way satellite modem such as the Satellite Express 2530XL USB (Universal Se ⁇ al Bus) Satellite Receiver provided by BroadLogic It should be apparent, however, that for other Internet communication means such as Telco POTS, Telco xDSL or cable modems, that correspondingly different modems 210 would be provided.
  • the satellite Internet service example is provided for illustration, and those skilled in the art will be able to practice the invention using such other Internet communication means after being taught by this illustration.
  • each SSTB receiving entity sends program selection signals to the base station indicating the channel(s) desired for viewing
  • the collection of these vanous selection signals indicates to the MSTB which channels are to be outputted by the RF Switch 110 and decoded, and subsequently re -multiplexed into a new MPEGII stream for broadcast to the collection of SSTBs.
  • each SSTB decodes the stream based upon its onginal requirements and selects the programs it requires
  • each SSTB again sends program selection signals to the base station indicating the channel(s) desired for viewing.
  • Each SSTB has a dedicated two-way link so separate MPEGII streams are sent to each SSTB.
  • the wireless protocol used for both the point to multipoint and the point to point methods descnbed above can be developed specifically for this application.
  • Control protocol can be used to take advantage of the particular RF modulation scheme that is used.
  • Wireless protocol converter 212 can be implemented according to, for example, 802.1 1 , or any number of advanced wireless multiple access controller protocols such as H ⁇ perLAN/2 This block formats downlink signals containing program streams and Internet streams from mux 208 into the appropriate protocol for wireless transmission between base station transceiver 214 and the slave
  • STBs 116 It also converts uplmk signals from slave STBs 1 16 received by transceiver 214 into approp ⁇ ate data and command signals for forwarding to Internet access modem 210 or to tuners 204, demux chains 206 and mux 208.
  • command signals can include information regarding which remote receiver has selected which program stream to receive.
  • Local set interface 216 includes MPEG-2 Transport demux 228 and MPEG/AC3 decoder 218, which can be both be implemented by, for example, chips from ST, Zoran, and LSI Logic. It also includes an IP stack 220, a graphics interface 222, a keyboard interface 224, and a remote control interface 226. Together, IP stack 220, graphics interface 222 and keyboard interface 224 preferably provide functionality akin to a web browser; alternatively, these functions can all be provided by a single-chip interactive TV device 230 such as the devices offered by TeleCruz.
  • IP stack 220 can be implemented internal to the single-chip device 230. Its purpose is to queue the IP packets (typically http, ftp or telnet type) between the Internet user operating the main
  • TV 112 and external networks such as web servers, etc.
  • Graphics interface 222 can be can be implemented internal to the single-chip device 230. It formats information and pages received from the Internet via IP stack 220 into TV output signals for displaying the information and pages
  • Keyboard interface 224 can be can be implemented internal to the single-chip device 230 It translates keystrokes and mouse clicks generated by a user into IP packets for sending over the Internet via IP stack 220.
  • Remote control interface 226 can be can be implemented internal to the single-chip device
  • FIG. 3 further illustrates a slave set top box such as SSTB 116 m accordance with the p ⁇ nciples of the invention.
  • SSTB 116 includes mobile radio transceiver 302, wireless protocol converter 304,
  • MPEG/AC3 decoder 308 is shown to be included in SSTB 116 m this example, alternatively, the functionality can be incorporated within TV set 114 (for example, an integrated TV receiver such as those from Sony, Panasonic,
  • the SSTB 116 also optionally includes a conditional access unit 306 for decrypting the signal just before reception by the TV receiver 1 14.
  • the conditional access decoder is placed last in the signal chain to prevent access to the digital video stream by unauthonzed users (e.g. pirates).
  • Mobile transceiver 302 is preferably a transceiver product developed m accordance with the
  • Wireless protocol converter 304 can be implemented by, for example, software running on a microprocessor such as those from MIPS and Intel. This block converts downlink signals containing program streams and Internet data from the appropriate protocol used for wireless transmission between base station transceiver 214 and the SSTBs 116. It also formats uplink signals such as data and command signals for forwarding to Internet access modem 210 or to tuners 204 and demux chains 206 into the appropnate wireless transmission protocol
  • Conditional access unit 306 can be implemented by, for example, a removable smart card or Point of Deployment module such as those built for the service providers by GI, Scientific-Atlanta, NDS, Nagra Interlocka, and GemPlus
  • MPEG-2 transport demux 228 and MPEG/AC3 decoder 308 can be implemented by, for example, chips from ST, LSI Logic, or C-Cube.
  • IP stack 310, graphics interface 312 and keyboard interface 314 preferably provide functionality akin to a web browser, and can be implemented within a single chip integrated TV device 320
  • IP stack 310 can be implemented within, for example, a single chip browser made for TV applications by Telecruz Its purpose is to queue the IP packets (typically http, ftp or telnet type) between the Internet user operating the TV 114 and external networks such as web servers, etc
  • Graphics interface 312 can be implemented as part of the TeleCruz chip 320. It formats information and pages received from the Internet via IP stack 310 into TV output signals for displaying the information and pages.
  • Keyboard interface 314 can be implemented as part of the TeleCruz chip 320. It translates keystrokes and mouse clicks generated by a user into IP packets for sending over the Internet via IP stack 310.
  • TVs 114 are controlled by handheld remote units, or remote keyboard units, in the normal fashion.
  • the remotes are used as user interfaces for TV, interactive TV, and/or Internet access
  • Remote control interface 316 can also be implemented as part of the TeleCruz chip 320. It translates channel selection and interactive TV commands generated by a user into control signals that can be used by tuners 204 and demux chains 206.
  • a Video Memory System (VMS) block 402 is placed between the conditional access encryption block of mux 208 and the Wireless Protocol converter 212.
  • the VMS 402 is implemented by a low-cost hard disk d ⁇ ve such as those adopted for consumer video by Seagate. Such a d ⁇ ve may be modified for low cost and consumer applications versus the type of d ⁇ ve built for computer applications The benefit of using a hard disk for this memory is that access is very fast and random
  • the incorporation of the VMS block 402 provides TV viewers in the home with a '"video pause" feature
  • a user viewing a TV program signal can press a "pause” button on the remote control
  • the picture on the TV freezes on the last frame.
  • the viewer can return to the TV at a later time, again press pause, and resume viewing the paused TV program without interruption
  • the pause feature is made possible by the presence of the VMS 402, which allows the TV matenal to be spooled up during and after the pause pe ⁇ od
  • Many other features are possible using a VMS, such as filtenng user preferred and/or user selected video material for later viewing.
  • User selected matenal can include that specified directly by the user based upon a mat ⁇ x of choices presented by an electronic program guide
  • User prefened matenal can be based upon tracking by the system of the channels and programs at specific times, thereby making possible the automatic profiling of the user's viewing habits, such systems are in use by TiVO and Replay TV and were first conceived and made public many years ago by Nicholas Negroponte, founder of MIT's Media Labs and published m his book Being Digital, Jan 95.
  • This embodiment of the invention expands the conventional concepts of VMS since now other users can share the VMS wirelessly
  • an entire network of users can be enjoying matenal from the VMS, or from real time, or both (with picture in picture or multi picture anays).
  • Each STB in the home wireless network including the MSTB 1 10 and the SSTBs 116, supports remote control commands that control the VMS and its functions such as video pause. Such commands are captured by the remote control interfaces of such STBs and converted into control signals that are then provided to VMS 402.
  • the VMS is configured to allow reading and wnting of several video streams simultaneously. This should not be a problem where a single picture video data rate is typically below 19.4 Mb/s; accordingly, for 5 users, the maximum throughput rate (R+W) would be less than 200 Mb/s or 25 MB/s, which is well within the capabilities of modern hard disc dnves.
  • VMS 402 can be used as a buffer for Internet pages, i.e. as a proxy store This allows recently viewed web (e.g HTML) pages and their associated resources (e.g jpg, .gif or other ancillary files) to be stored locally until they are changed at the serving point, thereby improving performance for the user while decreasing traffic from the ISP to the user
  • MSTB 1 10 additionally includes a wired Internet access unit 502 that is connected with an Internet source 504.
  • the Internet source 504 may include a telephone port, an XDSL line, a cable modem, or even a wireless source such as a local loop, a multi-channel multi- point distribution service (MMDS) or a Local Multi-pomt Distribution Service (LMDS)
  • MMDS multi-channel multi- point distribution service
  • LMDS Local Multi-pomt Distribution Service
  • alternative Internet sources are included in the system in a seamless way that does not require the user to differentiate between the sources of the content received.
  • the present invention can be configured to further limit the amount of hardware inside the home.
  • the basic functionality of the MSTB 1 10 is included in an external House Side Box (HSB) 702 so that all signals to the home 104 are made via the antennas 124.
  • HSA House Side Box
  • FIG. 7 A preferred embodiment of the HSB 702 of FIG. 6 is illustrated in FIG. 7.
  • the essential design difference between the HSB 702 illustrated in FIG. 7 and the MSTB 1 10" illustrated in FIG. 5 is the elimination of the link from the MUX 208 to the ma TV 1 12 since all transmissions are made wirelessly to SSTBs 116.
  • the alternative embodiments of MSTBs 1 10 — 1 10' are likewise adaptable to the design of the HSB 702 by elimination of the interface to the main TV 112 (or the co ⁇ espondmg local set interface 216 in FIG. 2).
  • a corresponding design for the SSTB 116 of FIG. 6 is illustrated m FIG. 8 where the transceiver 302 of the SSTB 116 communicates with the HSB 702.
  • the embodiment illustrated in FIG 6 advantageously eliminates all cabling between the outdoor satellite antennas (102, 122) and the intenor of the home 104. In addition, no cabling is needed inside the home 104. Thus, the installation process is substantially easier from the user's perspective since there are no cables to attach mside the home 104. Furthermore, it is easier to relocate the TVs 114 inside the home since none are tethered by cabling ,
  • FIG 9 A illustrates the embodiment of the present invention shown in FIG 6 where the antennas 124 provide wireless links (1 18, 120) from the HSB 702 to the SSTBs 116
  • FIG 9B an alternative embodiment is illustrated where the antennas 124 associated with the HSB 702 in FIG 6 are replaced by an antenna relay system 802 that is connected to the HSB 702 by a relay cable 804
  • minimal cabling is introduced into the home with the benefit of reducing the distances of the co ⁇ espondmg wireless links between the antenna relay system 802 and the SSTBs

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

Abstract

L'invention concerne un système de stockage et de distribution vidéo domestique permettant la distribution sans fil de signaux provenant de services satellite directement vers la maison et d services Internet. Des paraboles d'antenne placées à l'extérieur de la maison sont connectées à un boîtier de raccordement maître (MSTB), lui-même relié au récepteur de télévision principale de la maison. A l'intérieur du MSTB, les câbles coaxiaux provenant des récepteurs T.V. arrivent dans un boîtier de commutation R.F. pouvant être commandé soit manuellement, soit électroniquement. La sortie du boîtier de commutation R.F. est reliée à au moins un syntoniseur de T.V. 6-MHz utilisé pour transposer par abaissement de fréquence le signal large bande contenant jusqu'à 175 canaux dans le signal de bande de base désiré 6 MHz. Ledit signal de bande de base désiré est ensuite démodulé et démultipléxé en au moins un train de programmes audio/vidéo MPEG2. Lesdits trains de programmes sont combinés dans un multiplexeur qui associent tous les trains de programmes sélectionnés de façon à ce que les différents récepteurs de T.V. domestiques puissent y accéder. Les signaux T.V. et Internet aliment à la fois le récepteur T.V. local et un émetteur-récepteur radio de station de base. Ledit émetteur-récepteur envoie les informations désirées aux autres récepteurs T.V. via des antennes locales, et des boîtiers de raccordement asservis (SSTB). Chaque SSTB contient un émetteur-récepteur radio mobile et, de ce fait joue le rôle d'un terminal sans fil pour ledit émetteur-récepteur radio de station de base sans fil dans le MSTB. Ce terminal peut être utilisé pour une visualisation T.V. traditionnelle ou interactive et/ou un accès à Internet. Le MSTB peut également comprendre un système de mémoire vidéo (VMS) destiné à fournir un stockage centralisé de vidéo et/ou de train Internet auquel des récepteurs T.V. peuvent accéder et qu'ils peuvent utiliser dans toute la maison.
PCT/US2001/002628 2000-01-27 2001-01-26 Système de stockage et de distribution de vidéo domestique WO2001056297A1 (fr)

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AU2001229774A AU2001229774A1 (en) 2000-01-27 2001-01-26 Home video distribution and storing system

Applications Claiming Priority (2)

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US49288700A 2000-01-27 2000-01-27
US09/492,887 2000-01-27

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