CA2173303A1 - Dynamic channel assignment for data transmitted via cable television channels - Google Patents

Dynamic channel assignment for data transmitted via cable television channels

Info

Publication number
CA2173303A1
CA2173303A1 CA002173303A CA2173303A CA2173303A1 CA 2173303 A1 CA2173303 A1 CA 2173303A1 CA 002173303 A CA002173303 A CA 002173303A CA 2173303 A CA2173303 A CA 2173303A CA 2173303 A1 CA2173303 A1 CA 2173303A1
Authority
CA
Canada
Prior art keywords
bandwidth
channels
request
management unit
data
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
Application number
CA002173303A
Other languages
French (fr)
Other versions
CA2173303C (en
Inventor
Venkata Chalapathi Majeti
Mark Meir Rochkind
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T IPM Corp
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 AT&T IPM Corp filed Critical AT&T IPM Corp
Publication of CA2173303A1 publication Critical patent/CA2173303A1/en
Application granted granted Critical
Publication of CA2173303C publication Critical patent/CA2173303C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • 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
    • H04N21/2385—Channel allocation; Bandwidth allocation
    • 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
    • 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
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42684—Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
    • 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]
    • H04N21/60—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
    • H04N21/643—Communication protocols
    • H04N21/64322—IP
    • 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
    • H04N7/17336—Handling of requests in head-ends

Abstract

A system which avoids the bandwidth inefficiencies of simply providing multiple separate and independent channels for distributing data services over television compatible networks by considering the multiple channels as one unit and managing them as one unit with an upstream bandwidth management unit. This bandwidth management unit dynamically assigns active users to unused bandwidth among multiple channels. To accomplish this, the bandwidth management unit records each request for channel bandwidth that is made, each request that is being actively fulfilled, and each request that has been completed. Thus, data serviceproviders, such as multimedia services, can efficiently use multiple 6 megahertztelevision network compatible channels to distribute their data to many requesters/users at high rates of speed over a relatively inexpensive existing network.
CA002173303A 1995-05-08 1996-04-02 Dynamic channel assignment for data transmitted via cable television channels Expired - Fee Related CA2173303C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US435,048 1995-05-08
US08/435,048 US5675732A (en) 1995-05-08 1995-05-08 Dynamic channel assignment for TCP/IP data transmitted via cable television channels by managing the channels as a single sub network

Publications (2)

Publication Number Publication Date
CA2173303A1 true CA2173303A1 (en) 1996-11-09
CA2173303C CA2173303C (en) 2001-03-13

Family

ID=23726751

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002173303A Expired - Fee Related CA2173303C (en) 1995-05-08 1996-04-02 Dynamic channel assignment for data transmitted via cable television channels

Country Status (5)

Country Link
US (1) US5675732A (en)
EP (1) EP0742658B1 (en)
JP (1) JP3486294B2 (en)
CA (1) CA2173303C (en)
DE (1) DE69634375T2 (en)

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Also Published As

Publication number Publication date
JP3486294B2 (en) 2004-01-13
JPH08316992A (en) 1996-11-29
EP0742658B1 (en) 2005-02-23
US5675732A (en) 1997-10-07
EP0742658A2 (en) 1996-11-13
DE69634375T2 (en) 2006-04-27
DE69634375D1 (en) 2005-03-31
EP0742658A3 (en) 2002-06-12
CA2173303C (en) 2001-03-13

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