I 1111111111111111 11111 111111111111111 11111 111111111111111 lll111111111111111
`US007200855B2
`
`c12) United States Patent
`Laksono
`
`(IO) Patent No.:
`(45) Date of Patent:
`
`US 7,200,855 B2
`Apr. 3, 2007
`
`(54)
`
`(75)
`
`(73)
`
`METHOD AND APPARATUS OF
`MULTIPLEXING A PLURALITY OF
`CHANNELS IN A MULTIMEDIA SYSTEM
`
`Inventor:
`
`Indra Laksono, Richmond Hill (CA)
`
`Assignee: VIXS Systems, Inc., Toronto, Ontario
`(CA)
`
`( *) Notice:
`
`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, 2001
`
`(65)
`
`(51)
`
`(52)
`
`(58)
`
`Prior Publication Data
`
`US 2003/0156218 Al
`
`Aug. 21, 2003
`
`Int. Cl.
`H04N 7120
`(2006.01)
`U.S. Cl. ............................ 725/82; 725/74; 725/80;
`725/85; 725/120; 709/201; 709/227; 709/231
`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.
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`5,134,486 A
`5,654,774 A
`5,757,416 A *
`5,883,661 A *
`5,886,995 A *
`
`7/1992 Suzuki
`8/ 1997 Pugel
`5/1998 Birch et al. ................. 725/144
`3/ 1999 Roarty . ... .. ... ... ... ... ... .. . 725/93
`3/1999 Arsenault et al ............ 370/477
`
`5,951,664 A *
`6,133,910 A
`6,473,414 Bl*
`6,493,873 Bl *
`6,522,342 Bl *
`6,598,231 Bl*
`7,099,951 B2 *
`2001/0005908 Al *
`2004/0172658 Al *
`
`9/1999 Lambrecht et al. ......... 710/124
`10/2000 Stinebruner
`10/2002 Hartley et al. .............. 370/338
`12/2002 Williams ..................... 725/78
`2/2003 Gagnon et al.
`............. 715/716
`7/2003 Basawapatna et al ....... 725/120
`8/2006 Laksono ..................... 709/231
`6/2001 Hodge et al. ............... 725/121
`9/2004 Rakib et al ................. 725/120
`
`OTHER PUBLICATIONS
`
`VTST-Series NTSC/PAL Electronic Television Tuners.
`TDC Components for Modems & Digital-Set top boxes.
`Conexant-CX22702.
`Conexant-CX24108.
`What is Digital Satellite Television.
`
`* 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(cid:173)
`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(cid:173)
`lation scheme). The encoded channel data is then conveyed
`to a plurality of clients.
`
`63 Claims, 51 Drawing Sheets
`
`start
`
`710
`receive a plurality of channels
`from at least one multimedia
`source
`
`712
`receive select requests from at
`least one client module via a
`communication path
`
`714
`generate a set of channel select
`commands from the select
`requests
`
`716
`select a set of channels from
`the plurality of channels based
`on the set of channel select
`commands
`
`718
`mix the set of channels into a
`stream of channel data
`720
`
`722
`
`deformat the select requests
`
`724
`interpret the select requests to
`produce the set of channel
`select commands
`
`726
`transmit the stream of channel
`data on to the communication
`format the stream of channel
`path such that at least one ~ data for transmission via the
`client receives at least a portion --V
`transceivlng module
`of the stream of channel data
`' - - - - -~~ - - -~
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`FIG. 11
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`

`UI = N
`'-"= 00
`N =
`
`UI
`
`'-"--...l
`
`d r.,;_
`
`....
`0 ....
`
`Ul
`
`0
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`134-142
`
`112-120, &/or
`
`22, 46-54, 90-98,
`client module 14-
`
`FIG. 21
`
`~
`
`..J-
`
`1-
`
`192 = RF path 680
`communication path
`
`switch 678
`module 204 &/ i.----1--' .. transceiving
`
`or 345
`
`RF
`
`'--4---1
`
`processing
`
`sources 676
`
`telecomm
`
`246, 286, &/or 346
`module 154, 208,
`
`transceiving
`
`&/or 344
`
`156, 244, 284,
`control module
`
`or342
`
`152,242,282,&/
`
`•1
`
`channel mixer
`
`&/or 340
`
`150, 240, 280, I
`tuning module
`
`674
`
`AN sources
`
`-....J
`0
`0
`N
`'-"~
`
`t :-:
`
`134-142
`
`112-120, &/or
`
`;_ 22, 46-54, 90-98,
`client module 14-
`
`FiG. 20
`
`connection 670
`192 = wireline
`
`communication path
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`~
`
`-
`
`router 672
`
`~
`
`~
`
`---+
`
`246,286,&/or346
`module 154,208,
`
`transceiving
`
`I
`or 342
`
`;_ 152, 242, 282, &/
`
`channel mixer
`
`, 150, 240,280,
`tuning module
`
`or345
`
`, module 204 &/ J
`
`processing
`
`sources 676
`
`telecomm
`
`156, 244, 284, +-
`control module
`
`&/or 344
`
`&/or 340
`
`i
`
`674
`
`AN sources
`
`21
`
`

`

`UI = N
`'-"= 00
`N =
`
`UI
`
`'-"--...l
`d r.,;_
`
`....
`0 ....
`N ....
`.....
`rJJ =(cid:173)
`
`Ul
`
`('D
`('D
`
`FIG. 23
`
`server700
`~ multimedia
`
`path 692
`
`694
`
`l-ilf-+ 2ND communication
`
`encoder
`
`module 690
`transceiving
`!
`
`,I,
`
`channel data
`
`688 of stream of
`analog signals
`
`multiplexor 686
`
`analog
`
`..
`
`-
`
`-
`
`..
`
`&/or 346
`
`154,208,246,286,
`transceiving module
`
`'
`-152,242,282,&/
`channel mixer
`
`or342
`
`.
`
`...-
`+-
`
`,
`
`or345
`
`module 204 &/
`
`processing
`
`sources 676
`telecomm
`
`&/or 344
`
`, ...
`
`156, 244, 284,
`control module
`
`&/or 340
`
`i
`
`150, 240, 280,
`tuning module
`
`674
`
`AN sources
`
`-....J
`0
`0
`N
`'-"~
`
`t :-:
`
`134-142
`
`112-120, &/or
`
`22, 46-54, 90-98,
`client module 14-
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`FiG. 22
`
`...
`
`r
`
`+
`92 = IR path 684
`ommunication path
`
`y
`
`switch 682
`;. transceiving
`
`IR
`
`'-I-+
`
`or 345
`
`, ...
`
`• module 204 &/
`
`processing
`
`sources 676
`telecomm
`
`(
`
`246, 286, &/or 346
`module 154, 208,
`
`transceiving
`
`'
`-152,242,282, &/
`channel mixer
`
`I
`or 342
`
`156, 244, 284, +-
`control module
`
`&/or 344
`
`i
`
`&/or 340
`
`~ 150, 240, 280,
`tuning module
`
`674
`
`AN sources
`
`22
`
`

`

`UI = N
`'N = = 00
`
`UI
`
`-....l
`
`d r.,;_
`
`FIG. 24
`
`....
`0 ....
`
`Ul
`
`N
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`-....J
`0
`0
`N
`~
`
`~
`
`t :-:
`
`select commands
`
`produce the set of channel
`
`interpret the select requests to
`724
`
`r
`~
`
`deformat the select requests
`
`722
`
`==>
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`transceivin_g module
`
`data for transmission via the
`format the stream of channel
`726
`
`==>
`
`of the stream of channel data
`client receives at least a portion
`
`path such that at least one
`
`data on to the communication
`transmit the stream of channel
`
`720
`
`-l
`
`stream of channel data
`
`mix the set of channels into a
`718
`
`+
`
`commands
`
`on the set of channel select
`
`the plurality of channels based
`select a set of channels from
`716
`
`i
`
`requests
`
`commands from the select
`
`generate a set of channel select
`714
`
`+
`
`communication path
`
`least one client module via a
`receive select requests from at
`712
`
`-l
`
`source
`
`from at least one multimedia
`receive a plurality of channels
`
`~ +
`
`....
`
`start
`
`(
`
`23
`
`

`

`UI = N
`'N = = 00
`
`UI
`
`-....l
`
`d r.,;_
`
`~
`N
`.....
`rJ'1 =(cid:173)
`
`('D
`('D
`
`....
`0 ....
`
`Ul
`
`interval 756
`
`transmit
`
`.. ..
`interval 752 I interval 754
`transmit
`receive
`
`....
`
`....
`..
`I interval 750 I
`
`receive
`
`transmit interval 7 48
`
`module 744
`
`module 742
`
`client
`
`f
`
`client
`
`f
`
`module 740
`
`client
`
`f
`
`FIG. 26
`
`comm. path 746
`
`frames
`
`frames
`
`packets or
`
`packets or
`
`•••
`
`frames
`
`frames
`
`frames
`
`packets or
`
`packets or
`
`packets or
`
`MM server 738
`
`f
`
`frames
`
`pacKets or
`~
`
`-....J
`0
`0
`N
`~
`
`~
`
`t :-:
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`formatted based on the type of transceiving
`
`~ intervals on the wireline connection, select requests
`receive formatted select requests during receiving
`
`736
`
`---+ data to at least one of the clients
`provide the formatted channel
`
`during transmitting intervals
`
`transceiving
`
`data based on the type of
`
`format the stream of channel
`
`~
`
`FIG. 25
`
`intervals
`
`intervals and the receiving
`determine the transmitting
`
`7
`
`,L,
`
`wireline connection
`
`comm. path is a
`
`24
`
`

`

`UI = N
`'-"= 00
`N =
`
`UI
`
`'-"--...l
`d r.,;_
`
`....
`0 ....
`
`Ul
`
`.i;...
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`-....J
`0
`0
`N
`'-"~
`
`t :-:
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`based on the type of transceiving
`
`intervals on the IR path, select requests formatted
`receive formatted select requests during receiving
`
`,..
`.
`
`776
`
`transmitting intervals via the IR path
`
`to at least one client during
`
`provide the formatted channel data
`
`transceiving
`
`data based on the type of __.
`
`format the stream of channel
`
`~ ,
`
`based on the type of transceiving
`
`intervals on the RF path, select requests formatted
`receive formatted select requests during receiving
`
`~
`
`,
`
`766
`
`transmitting intervals via the RF path
`
`transceiving
`
`data based on the type of ~ to at least one client during
`
`provide the formatted channel data
`
`format the stream of channel
`
`.
`
`'
`
`FIG. 28
`
`intervals
`
`intervals and the receiving
`determine the transmitting
`
`7
`
`~
`
`"'
`
`+
`
`'"
`
`infrared path
`
`comm. path is an
`
`FIG. 27
`
`intervals
`
`intervals and the receiving
`determine the transmitting
`
`71
`
`~
`
`+
`
`frequency path
`
`comm. path is a radio
`
`25
`
`

`

`UI = N
`'N = = 00
`
`UI
`
`-....l
`
`d r.,;_
`
`Ul
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`Ul
`
`....
`0 ....
`
`-....J
`0
`0
`N
`~
`
`~
`
`t :-:
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`commands 830
`channel select
`
`1
`
`Cl)
`..c
`Cll
`~
`"C
`.0
`:::J
`Cl)
`00
`N
`V
`
`packets 828
`
`module 826
`
`receiving
`
`I
`
`channels 822 _ .
`encoded set of
`
`806
`
`bus interface
`
`,.
`...
`
`I
`I
`I
`I
`I
`I
`I
`I
`I
`I
`
`I
`
`I
`I
`I
`I
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`I
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`,__
`a.
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`{)
`~
`Q)
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`.N
`i:::
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`-E
`0
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`N
`0
`
`-
`
`L.-
`
`.
`
`Q)
`C
`...,
`Q
`""O
`Q)
`...
`00
`,....
`co
`
`.
`
`,
`
`,.
`
`. .
`
`-
`
`• &~
`,----------,
`
`,_
`i
`.c
`:::J 00
`
`...
`
`•
`
`I
`I
`I
`
`I
`I
`I
`i
`I
`I
`.c
`I
`:::J CX)
`~~
`I ...
`.._
`I
`I
`i
`I
`I
`.c
`:::J co
`I ... &~
`...
`!
`I
`i
`I
`I
`.c
`. :::J 00
`I ,. &~
`I
`I
`I
`I
`
`I
`
`encoding module 804
`
`controller 818
`
`buffer
`
`___________ ___,
`
`I
`
`I
`
`FIG.29
`
`.uninq module 825
`
`channel794
`
`selected
`
`:
`
`4f selector 786
`command 802
`channel select
`
`..
`
`channel792
`
`selected
`
`channel790
`
`selected
`
`cnannel/tltl
`
`~ selector 784 1
`I
`
`command 800
`channel select
`
`+
`
`~ selector 782 1
`
`command 798
`channel select
`
`+
`
`_.j selector 780 1
`
`I
`
`w
`
`channel select
`
`:::J c..
`e!
`~
`b
`{)
`..c
`Cll
`C
`C
`a3
`00 r-(cid:173)
`r--
`
`-
`
`C/)
`
`26
`
`

`

`UI = N
`'N = = 00
`
`UI
`
`-....l
`
`d r.,;_
`
`....
`0 ....
`
`Ul
`
`O'I
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`-....J
`0
`0
`N
`
`~
`
`~
`
`t :-:
`
`1-£3
`('(l
`~
`"O
`.0
`:::J
`------;·NC/)
`channels 822 ~
`encoded set of I"""
`
`frames 846
`
`commands 848
`channel select
`
`,I,
`
`1•1
`
`module 844
`monitoring
`
`806
`
`bus interface
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`~
`·E
`C
`g
`rn
`"8....
`E
`«>,~-.. 0
`"O
`I...
`"S
`00
`.....
`Q)
`~
`N
`
`-- LJ
`
`I
`
`_.
`
`I
`
`--
`
`-
`
`Q)
`
`..0
`
`i---,I---PI
`
`I
`I
`I
`I
`I
`I • .E 00 I
`I I ~ 'q"
`I
`t
`I
`I
`::i oo
`I
`I ~ N
`.._
`i
`I
`I
`,...___,,.........
`..0
`I ~ oo
`I w o i---i--...
`I
`I
`I
`I •_ i:! g I
`1 ~ co
`r-----
`
`encoding module 804
`
`FIG. 30
`
`controller 818
`
`buffer
`
`-H
`I
`I
`I
`I
`I
`I
`I
`I
`•I
`I
`--;....::-----1
`
`'°
`
`,--
`
`t__,
`
`1
`
`tuning module 840
`
`channel 794
`
`selected
`
`L..j selector 786 I
`I .
`
`command 802
`channel select
`
`t:
`
`_._ __ _, channel 790
`
`selector 782
`
`selected
`
`command 798
`channel select
`
`channel 788
`
`selected
`
`rl selector 780 I
`
`command 796
`channel select
`
`t:
`
`§~
`Cl)
`......
`00
`t--
`
`92
`
`I
`
`_._ __ _, channel 7
`selected
`
`selector 784
`
`command 800
`channel select
`
`~~
`('(l
`~
`
`..c o--0
`
`('(l
`
`27
`
`

`

`UI = N
`'-"= 00
`N =
`
`UI
`
`'-"--...l
`
`d r.,;_
`
`....
`0 ....
`
`Ul
`
`-....J
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`-....J
`0
`0
`N
`'-"~
`
`t :-:
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`FIG. 31
`
`g module 850
`
`I tunin
`
`J,
`J,
`
`804
`
`encoding module
`
`J,
`
`module 860
`encrypting
`
`J,
`
`module 862
`
`data compressing
`
`shared bus 824
`
`bus interface 806
`
`,1r
`
`controller 870
`
`bus
`
`----_____ I
`depacketizer 854 ~I
`-g I
`.~I
`El
`0
`-5 I
`..!!1 I
`~ I
`N
`---------1
`
`buffer 858
`
`t
`
`t
`
`I
`
`-0
`
`deframer/
`
`decoder 856
`
`t
`
`ii,
`
`,,,
`
`~ ~
`
`channel 788 ~ r
`
`selected
`
`annel794
`lected
`
`C
`s,
`
`channel790
`
`selected
`
`channel792
`
`selected
`
`selector 786
`
`"
`...
`,...
`...
`
`selector 780
`
`selector 784
`
`~
`
`,
`
`,
`...
`
`,
`...
`,
`
`-
`
`selector 782
`
`I channel select command 796 _.)If
`command 798
`channel select J
`command 800
`channel select J
`
`,
`...
`-+
`
`channel select command 802
`
`channels 787 ~
`
`plurality of
`
`module 868
`156, 244, 284,
`control module I+-decompressing
`
`&/or 344
`
`module 864
`decrypting
`
`t
`
`28
`
`

`

`UI = N
`'N = = 00
`
`UI
`
`-....l
`
`d r.,;_
`
`....
`0 ....
`
`Ul
`
`QO
`N
`.....
`rJJ =(cid:173)
`
`('D
`('D
`
`-....J
`0
`0
`N
`~
`
`~
`
`t :-:
`
`~ = ~
`
`~
`~
`~
`•
`00
`
`e •
`
`channel selection request
`authenticate the specific
`908
`
`selection request
`
`provides a specific channel
`
`plurality of clients that
`
`authenticate a client of the
`
`906
`
`requests
`
`of the channel selection
`
`the clients and at least one
`to identify at least one of
`channel selection request
`
`interpret at least one
`
`904
`
`FIG. 34
`
`and/or
`
`commands
`
`the plurality of channel selection
`
`selection requests to produce
`process the plurality of channel
`
`902
`
`clients
`
`requests from a plurality of
`
`receiving the channel selection
`900
`
`selection commands
`receiving the channel
`
`FIG. 33
`
`data
`
`convey the encoded channel
`898
`
`!
`
`multimedia system
`
`conveyance protocol of the
`channels based on a data
`encode each of the selected
`
`896
`
`!
`
`commands
`
`plurality of channel selection
`selection command of the
`of channels per