US007 200855B2
`
`(12) United States Patent
`LaksOn.0
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 7,200,855 B2
`Apr. 3, 2007
`
`(54) METHOD AND APPARATUS OF
`MULTIPLEXING A PLURALITY OF
`CHANNELS IN A MULTIMEDIA SYSTEM
`
`(75) Inventor: Indra Laksono, Richmond Hill (CA)
`
`(*) Notice:
`
`(73) Assignee: VIXS Systems, Inc., Toronto, Ontario
`(CA)
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 1144 days.
`(21) Appl. No.: 09/864,602
`(22) Filed:
`May 24, 2OO1
`
`(65)
`
`Prior Publication Data
`US 2003/O156218 A1
`Aug. 21, 2003
`
`(51) Int. Cl.
`(2006.01)
`H04N 7/20
`(52) U.S. Cl. ............................ 725/82; 725/74; 725/80;
`725/85; 725/120; 709/201: 709/227; 709/231
`(58) Field of Classification Search .................. 725/96,
`725/144-148, 114-119, 120, 121, 138, 47,
`725/74, 80, 82,85, 105: 709/201-203, 227 229,
`709/231
`See application file for complete search history.
`References Cited
`
`(56)
`
`U.S. PATENT DOCUMENTS
`5,134,486 A
`7, 1992 Suzuki
`5,654,774 A
`8/1997 Pugel
`5,757,416 A * 5/1998 Birch et al. ................. T25,144
`5,883,661 A * 3/1999 Hoarty ...........
`... T25.93
`5,886,995 A * 3/1999 Arsenault et al. ........... 370/477
`
`5,951,664 A * 9/1999 Lambrecht et al. ......... T10,124
`6,133,910 A 10/2000 Stinebruner
`6,473.414 B1 * 10/2002 Hartley et al. .............. 370,338
`6,493,873 B1* 12/2002 Williams ..........
`... 725,78
`85. R. 23. E.Real- - - - - - - - - 2.78
`7,099.951 B2 * 8/2006 Laksono ..................... TO9,231
`2001/0005908 A1* 6/2001 Hodge et al. .....
`... 725,121
`2004/0172658 A1* 9, 2004 Rakib et al. ................ 725/120
`OTHER PUBLICATIONS
`VTST-Series NTSC PAL Electronic Television T
`-SS
`COC WSO US.
`TDC Components for Modems & Digital—Set top boxes.
`Conexant CX22702.
`Conexant-CX24108.
`What is Digital Satellite Television.
`a 1S LJ1g.
`a
`WSO
`* cited by examiner
`Primary Examiner Ngoc Vu
`
`(57)
`
`ABSTRACT
`
`A method and apparatus for multiplexing a plurality of
`channels within a multimedia system includes processing
`that begins by receiving a plurality of channels from a
`multimedia source. The processing then continues by receiv
`ing a plurality of channel selection commands from client
`modules. The processing continues by selecting a channel of
`the plurality of channels for each of the channel selection
`commands to produce selected channels. As such, for each
`channel selection command, a corresponding channel is
`selected from the plurality of channels. The processing
`continues by encoding the selected channels based on a data
`conveyance protocol (e.g., encoding scheme and/or modu
`lation scheme). The encoded channel data is then conveyed
`to a plurality of clients.
`
`63 Claims, 51 Drawing Sheets
`
`710
`receive a plurality of channels
`from at least one multimedia
`SOce
`
`receive select requests from at
`east one client module via a
`communication path
`
`
`
`714
`generate a set of channel select
`commands from the select
`requests
`
`722
`
`> deformat the select requests
`
`724
`interpret the select requests to
`produce the set of channel
`select commands
`
`select a set of channels from
`the plurality of channels based
`on the set of channel select
`commands
`
`mix the set of channels into a
`stream of channel data
`
`transmit the stream of channel
`data on to the communication
`path such that at least one
`client receives at least a portion
`of the stream of channel data
`
`726
`format the stream of channel
`=> data for transmission via the
`transceiving module
`
`Comcast, Ex. 1001
`
`1
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`U.S. Patent
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 6 of 51
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`U.S. Patent
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`U.S. Patent
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`Apr. 3, 2007
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 10 of 51
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`U.S. Patent
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`Sheet 14 of 51
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`US 7,200,855 B2
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`U.S. Patent
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`Sheet 15 of 51
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`US 7,200,855 B2
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`U.S. Patent
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`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 18 of 51
`
`US 7.200,855 B2
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`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 19 of 51
`
`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 20 of 51
`
`US 7,200,855 B2
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`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 21 of 51
`Sheet 21 of 51
`
`US 7.200,855 B2
`US 7,200,855 B2
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`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 22 of 51
`Sheet 22 of 51
`
`US 7,200,855 B2
`US 7,200,855 B2
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`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 23 Of 51
`Sheet 23 of 51
`
`US 7,200,855 B2
`US 7,200,855 B2
`
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`

`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 24 of 51
`
`US 7,200,855 B2
`
`
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`

`U.S. Patent
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`2
`
`US 7,200,855 B2
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`

`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 26 of 51
`
`US 7,200,855 B2
`
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`

`

`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 27 of 51
`
`US 7,200,855 B2
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`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 28 of 51
`
`US 7,200,855 B2
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`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 29 Of 51
`Sheet 29 of 51
`
`US 7,200,855 B2
`US 7,200,855 B2
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`

`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 30 Of 51
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`US 7,200,855 B2
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`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 31 of 51
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`US 7,200,855 B2
`
`
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`

`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 32 Of 51
`
`US 7,200,855 B2
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`

`

`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 33 of 51
`
`US 7,200,855 B2
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`
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
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`Sheet 34 of 51
`Sheet 34 of 51
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`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 35 of 51
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`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 36 of 51
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`US 7,200,855 B2
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`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 37 of 51
`Sheet 37 of 51
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`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 38 of 51
`Sheet 38 of 51
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`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 39 Of 51
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`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 40 of 51
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`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
`
`Sheet 41 of 51
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`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 42 of 51
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`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 43 of 51
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`US 7,200,855 B2
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 44 of 51
`
`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 45 of 51
`Sheet 45 of 51
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`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
`
`Apr. 3, 2007
`
`Sheet 46 of 51
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`US 7,200,855 B2
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`‘Apr.3,2007
`
`Sheet 47 of 51
`Sheet 47 of 51
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`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`‘Apr.3,2007
`
`Sheet 48 of 51
`Sheet 48 of 51
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`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
`
`Sheet 49 of 51
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`US 7,200,855 B2
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`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2007
`Apr. 3, 2007
`
`Sheet 50 of 51
`Sheet 50 of 51
`
`US 7,200,855 B2
`US 7,200,855 B2
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`U.S. Patent
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`Apr. 3, 2007
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`Sheet 51. Of 51
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`US 7,200,855 B2
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`US 7,200,855 B2
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`1.
`METHOD AND APPARATUS OF
`MULTIPLEXING A PLURALITY OF
`CHANNELS IN A MULTIMEDIA SYSTEM
`
`TECHNICAL FIELD OF THE INVENTION
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`5
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`This invention relates generally to communication sys
`tems and more particularly to in-home local area network
`ing.
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`10
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`BACKGROUND OF THE INVENTION
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`2
`transmission protocol. For example, a computer network
`may utilize any one of the Ethernet standards.
`In any type of communication system, a user must have
`the appropriate receiving and possibly transmitting equip
`ment to independently access the communication system.
`For example, a user of a satellite television system must
`have a satellite receiver and a television to receive satellite
`broadcast. If another television is to independently access
`the satellite broadcast, it needs its own satellite receiver. The
`same is true for NTSC broadcast, cable broadcast, etcetera,
`although currently most televisions include an NTSC tuner
`and/or some form of cable tuner.
`With the number of households having multiple television
`sets increasing, and many users wanting the latest and
`greatest Video viewing services. As such, many households
`have multiple satellite receivers, cable set-top boxes,
`modems, etcetera. As is further known, dependent multiple
`access to satellite broadcasts may be achieved by linking
`slave televisions to a master television. The master televi
`sion has full control of and independent access to, the
`satellite receiver while the slave televisions receive what
`ever channel has been selected by the master.
`For in-home Internet access, each computer or Internet
`device has its own Internet connection. As such, each
`computer or Internet device includes a modem. As an
`alternative to each computer having its modem, an in-home
`local area network may be used to provide Internet access.
`In Such an in-home local area network, each computer or
`Internet device includes a network card to access a server.
`The server provides the coupling to the Internet. Currently,
`the cost of a network card is at least as expensive as a 56K
`modem thus, there is no cost savings with such an in-home
`local area network.
`As is further known, in-home local area networks use one
`or more of telephone lines, radio frequencies, power lines,
`and/or infrared connections as the communication medium.
`Such in-home local area networks are typically used to
`facilitate an in-home computer network that couples a
`plurality of computers with one or more printers, facsimile
`machine, etc. As such, entertainment type data transmissions
`(e.g., from VCRs, DVDs, etcetera) are not supported by the
`in-home local area network without having the home spe
`cially wired to support an in-home LAN that transceives
`entertainment type data.
`Therefore, a need exists for a method and apparatus for a
`communication system to overcome the above-mentioned
`issues and to offer additional services within homes.
`
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`Communication systems are known to convey data from
`one entity to another. The data may be audio data, video data
`and/or text data. In Such communication systems, the data is
`transmitted via one or more transmission mediums (e.g.,
`radio frequencies, coaxial cable, twisted pair copper wire,
`fiber optic cabling, etcetera) in accordance with one or more
`data transmission protocols. The distance over which the
`data traverses within a communication system may be
`inches, feet, miles, tens of miles, hundreds of miles, thou
`sands of miles, et cetera.
`As is also known, communication systems have two basic
`configurations: wide area networks (WAN) and local area
`networks (LAN). In addition, WAN and/or LAN communi
`cation systems may use a variety of transmission types
`including broadcast transmissions, asymmetrical transmis
`sions, and symmetrical transmissions. In a broadcast com
`munication system, a network hub transmits data to a
`30
`plurality of users with little or no data being transmitted
`from the users to the network hub. Examples of broadcast
`communication systems include radio systems, NTSC (na
`tional television standards committee) television systems
`(e.g., regular TV), high definition television systems, cable
`systems, and satellite systems. In each of these broadcast
`communication systems, a network hub (e.g., radio station,
`television station, et cetera) transmits a broadcast signal.
`Any user within range of the broadcast signal and who has
`an appropriate receiver (e.g., radio, television, etcetera) can
`receive the broadcast signal. Such broadcast systems employ
`a particular data transmission protocol Such as amplitude
`modulation, frequency modulation, ultra-high frequency,
`very high frequency, etcetera.
`Asymmetrical communication systems transmit more
`data in one direction than in another (i.e., one entity trans
`mits to others more than it receives data from each of the
`other entities). An example of an asymmetrical communi
`cation system is the Internet, where web servers transmit
`Substantially more data than they receive from any one user.
`The Internet uses TCP/IP as its data transmission protocol,
`while a variety of physical layer data transmission protocols
`may be used to access the Internet. Such physical layer data
`transmission protocols include asynchronous transfer mode
`(ATM), frame relay, integrated services digital network
`(ISDN), digi