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`
`US00?5584i’2B2
`
`(12) United States Patent
`Locket et al.
`
`(10) Patent No.:
`
`(45; Date of Patent:
`
`US 7,558,472 B2
`Jul. 7, 2009
`
`(54)
`
`(75)
`
`.VIUI..TIMI~lDIA SIGNAL PR()(IESSl.-VG
`SYSTEM
`
`Inventors: David I.-ticket, Los Gatos, CA (US):
`Kurtis G. Ileaton. Pleasanton, CA (US);
`James M. Barton. Los (iatos. CA (US):
`Jean Swey Kao. Cupertino. CA (US):
`(Thing Tong Chow. Fremont. CA (US);
`Roderiek James Melnnis. Milpits. (‘A
`(US); Andrew Martin Goodman.
`Menlo Park, CA (US)
`
`(73)
`
`Assignee:
`
`'l'iVo Inc.. Alviso. CA (US)
`
`(‘°‘}
`
`Notice:
`
`Subject to any disclaimer. the term of this
`patent is extended or adjusted under 35
`U.s.(:. t54{b)by 1623 days.
`
`(21)
`
`Appl. No .: 093935.426
`
`(22)
`
`Filed:
`
`Aug. 22.. 2001
`
`(65)
`
`(63)
`
`(60)
`
`Prior Publication Data
`
`US 2()O2a"(}037l6()_*\l
`
`Mar. 28, 2002
`
`Related U.S. Application Data
`
`Contitniation-in-part of application No. 093827.029.
`filed on Apr. 5. 200}.
`
`Provisional application No. 60t'226.856. filed on Aug.
`22. 2000.
`
`(51)
`
`Int. (21.
`
`(2006.01)
`H04N 7/00
`(2006.01)
`H04N 5/00
`(200(:.()l)
`H04N 7/26
`386K125: 386K124: 386.005
`U.S. (I1.
`Field ofClassifieation Search
`386f46.
`386r’l09_. 111, 112. 83. 96.124
`See application tile for complete search history.
`
`(52)
`(53)
`
`(56)
`
`CA
`
`References Cited
`US. l-’A'l'liN'I‘ DUClJMl",N'l‘S
`
`3.683.353 A
`
`8."'l9?2
`
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`
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`Macwcek News anicle entitled. “Quiclc'l'itne Ready for Prime 'l'ime".
`dated Dec.
`I0.
`[991 (2 pages. numbered 'l‘IV()-410797 & 'I'l\.r'tI}-
`4 10'.-"98).
`
`((.‘ontinued)
`
`Prirrtarjt-' E.\'arrtt'ner—Robert Chevalier
`(74) Attorney. Agent. or Firm llickman Palermo Truong 8;
`1'-locker LLP
`
`(57)
`
`ABSTRACT
`
`A multimedia signal processing system utilizes an easily
`manipulated, low-cost storage and display system that allows
`the user to view a television program and instantly review
`previous scenes within the progratn. The invention also
`allows the user to store selected programs while simulta-
`neously watcliing or reviewing anotlter. A versatile system
`architecture enables providing the invention in multiple con-
`figurations. each adapted to receive input signals from a dif-
`ferent source. At the highest level. the system includes an
`input section and an output section. Across all cottfigurations.
`the output section retnains substantially the same. while the
`input section varies according to the signal type and the
`source. 'l'hus_. several configurations are provided. each one
`requiring. only minor system board modifications. The system
`architecture thus simplifies the design and Inanufacturing
`challenge presented by producing units to serve different
`markets. such as digital satellite. digital cable and analog
`cable.
`
`37 Claims, 23 Drawing Sheets
`
`W0
`
`% hard disk
`
`I-"OI
`
`
`
`SAMSUNG 1001
`
`SAMSUNG 1001
`
`1
`
`

`
`US 7,558,472 B2
`Page 2
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`
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`
`* cited by examiner
`
`5
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet] of 23
`
`US 7,558,472 B2
`
`
`
`6
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 2 of 23
`
`US 7,558,472 B2
`
`20)‘
`
`Input
`Module
`
`Input
`Module
`
`Input
`Module
`
`Input
`Module
`
`202
`
`203
`
`204
`
`Output
`Module
`
`Output
`Module
`
`Output
`Modute
`
`Output
`; Module
`
`206
`
`207
`
`208
`
`209
`
`205
`
`Media
`Switch
`
`FIG. 2
`
`7
`
`

`
`U.S. Patent
`
`Jul. 7,2009
`
`Sheet 3 of 23
`
`US 7,558,472 B2
`
`8
`
`

`
`U.S. Patent
`
`Jul.7,2009
`
`Sheet 4 of 23
`
`US 7,553,472 B2
`
`408
`
`40?
`
`402
`
`408
`
`409J
`
`40?'“\
`
`Purser
`
`403
`
`404
`
`405
`
`4fiU
`
`video buffer
`
`41?-
`
`uudio buffer
`
`412
`
`private data buffer
`
`4?3
`
`event buffer
`
`FIG. 4
`
`50?
`
`502
`
`503
`
`504
`
`time stamp
`
`type
`
`FIG. 5
`
`9
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 5 of 23
`
`US 7,558,472 B2
`
`Circular
`Segment
`Buffers
`
`.
`A Log I ccli
`Segment
`
`
`
`
`Length
`
`Type = I-FRAME
`
`SW1
`
`
`
`Media Switch
`
`Events
`Trans loted t
`
`‘,
`
`Logical
`Segments
`
`10
`
`10
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 6 of 23
`
`US 7,558,472 B2
`
`encoder audio
`
`video
`on- so reen
`
`display
`
` 703
`
`MPEG
`
`FIG. 7
`
`11
`
`11
`
`

`
`U.S. Patent
`
`Jul. 7,2009
`
`Sheet 7 of 23
`
`US 7,558,472 B2
`
`301
`
`803
`
`Transforms
`
`
`encode r
`
`decoder
`
`804
`
`hard disk
`
`FIG.8
`
`12
`
`12
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 8 of 23
`
`US 7,558,472 B2
`
`918
`
` IIIIII
`\-919
`X920
`
`push
`
`current
`
`FIG. 9
`
`13
`
`13
`
`

`
`U.S. Patent
`
`Jul. 7,2009
`
`Sheet 9 of 23
`
`US 7,558,472 B2
`
`1002-x
`
`TmkCHpCache
`
`1001
`
`7003
`
`
`
`TmkClip
`Reader
`
`14
`
`14
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 10 of 23
`
`US 7,558,472 B2
`
`15
`
`15
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 11 of 23
`
`US 7,558,472 B2
`
`NTSC Field Sequence
`
`even
`
`
`
`VBI {";,VBl Line 21 (FCC Mandated)
`i
`5* ice“ Eamasnz i‘
`C1 C1
`X e
`on Girls
`picture
`Region K
`Services (EDS) data (e.g.,
`Time of day, V—chip)
`
`//-1202
`
`-i Two characters per odd field
`\
`
` .3 Circular Buffer
`
`
`
`Recognizer state machine
`
`V120?
`
`Trigger
`Action
`
`Sto rt capture ,
`Stop capture ,
`Phrase seen ,
`
`Etc.
`
`Separate into
` words
`
`Wordi StateA
`Ward2 StateB ---_..
`Word3 StateC
`
`
`
`7205 -\
`
`
`Words added to a special
`segment
`in the fI'xed—size
`PES buffer.
`
`
`
`
`
`FIG. 12
`
`16
`
`
`1203/
`1204
`
`Next Unparsed
`Character
`
`Next Empty Position
`
`
`
`
`16
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 12 of 23
`
`US 7,558,472 B2
`
`Input
`st reams
`
`p
`
`MPEG
`streams
`
`MPEG
`st reams
`
`FIG. 13
`
`17
`
`17
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 13 of 23
`
`US 7,553,472 B2
`
`I I
`
`1402
`
`[
`
`I400 \
`
`1403 :
`:I
`
`Il
`
`CPU
`
`I408
`
`IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
`
`_'
`
`FIG. 14
`
`18
`
`éfin
`
`:—-
`
`III
`
`18
`
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 14 of 23
`
`US 7,558,472 B2
`
`1402\
`
`1403 1501
`
`32 64MB
`SDRAM
`
`1502
`
`FLASH
`FROM
`
`1406
`
`_,____
`
`S—VID
`
`I
`
`" : CVBS(2)
`Host Bridge. > Aud-L(2)
`Men’: Controller,
`Aud—R(2)
`x
`t omux,
`P0?
`S/PDIF
`Dual SD MPEG
`A/V Decoder
`
`‘
`
`smcIr7f
`I
`‘ Card(s)
`
`II
`
`1504
`
`1503
`
`/,
`
`7519
`
`V30
`Modem
`
`RJ11
`I
`
`1506'
`
`.
`——————— .
`'
`1394
`‘#:';““
`I50/Link/PHYI—|]
`L ____ __!
`Secure
`-
`MICFO
`
`?'57i'
`
`1407
`
`1405
`
`Pm
`
`
`
`Ts 1|:
`
`
`
`1505
`‘:1
`- in
`Em‘!
`i.,__
`“J
`Encrypted
`U55
`h '
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`3,
`IRR
`IR
`Two
`IRE
`
`
`f518—” 9’
`Media
`GPIO Manager
`
`12::
`ASIC
`i'508-/
`
`GPIO
`\1515
`
`232
`
`232
`
`
`
`
`7575
`
`FIG. 15
`
`19
`
`19
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 15 of 23
`
`US 7,558,472 B2
`
`Stand Alone Analog Fron’: End
`
`“W
`
`CVBS/Aud
`1602
`
`
`
`FR out III)! RF M
`
`CV35 :
`
`Aud-
`
`Aud-
`
`MPEG
`A/V Encoder
`
`I. _____________________________ __
`
`I I I I I I
`
`}
`
`I I I I I
`
`7503
`
`FIG. 76
`
`_[1401B
`
`DIRECTV Combo
`
`Sotolite Front End
`
`I
`
`o)Il DIRECTV
`Tuner
`
`QPSK
`DM OD
`
`1
`I
`'
`}
`{
`I
`
`II
`
`'
`'
`'
`'
`I
`I
`
`I
`
`20
`
`I
`
`1
`I
`I
`I
`I
`E
`I
`I
`I
`I
`I
`I
`
`20
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 16 of 23
`
`US 7,558,472 B2
`
`I I I I I I I l I I I I I I l
`
`II I I I I I I I I I I I I I
`
`Cable Combo
`
`Dual
`
`Input Front End
`
`QAM/BT — oocszs
`QPSK - mvxc
`
`TS
`
`21
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 17 of 23
`
`US 7,558,472 B2
`
`Stand Alone Analog Front End
`
`CVBS/Aud
`
`
`
`SeeFig.19B
`
`FIG. 79A
`
`22
`
`22
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 13 of 23
`
`US 7,558,472 B2
`
`200 MHZ
`
`MIPS CPU
`
`19A
`
`TS
`
`TS
`
`PCI System Bus
`
`TS SeeFig.
`_L_L_:j.:...__......._.._._..L:.__..-:-.---LL11
`
`Sys/Ad
`
`Mam Controller,
`Xpori DMUX,
`Dual SD MPEG
`
`A,/V Decoder
`
`FIG. 19B
`
`23
`
`23
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 19 of 23
`
`US 7,558,472 B2
`
`‘Z-f401B
`
`‘I
`
`SeeF1'.g.20B
`
`I I I I I I
`
`Sotolite Front End
`
`DIRECTV Combo
`
` USB
`
`Controller
`
`FIG. 20A
`
`24
`
`24
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 20 of 23
`
`US 7,558,472 B2
`
`[2022
`
`200 MHZ
`MIPS CPU
`
`M03
`
`Mem Controller,
`Xport DMUX,
`Dual SD MPEG
`
`PCI System Bus
`
`1405
`
`PCI
`
`A/V Decoder SeeF1lg.20A
`GPIO Nov Cluster
`
`ted
`
`Encr
`[DE yp
`IRR
`
`IRE
`GP 1 O
`
`TiVo
`Media
`MGHCJQB I"
`AS I C
`
`RS252 I
`
`FIG. 20B
`
`25
`
`25
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 21 of 23
`
`US 7,558,472 B2
`
`——1_...—......——.—1:1—l
`
`SeeF1',_q.21B
`
`£ 1401C
`
`Cclbie Combo
`
`Dual
`
`Input Front End
`
`OAM/BT - DOCSIS
`QPSK - DAVIC
`
`TS
`
`Dual MPEG
`125 A/V Encoder
`
`FIG. 21A
`
`26
`
`26
`
`

`
`U.S. Patent
`
`Jul. 7, 2009
`
`Sheet 22 of 23
`
`US 7,558,472 B2
`
`/-2100
`
`200 MHZ
`MIPS CPU
`
`1403
`
`32-54MBI ‘W’
`
`Host Bridge,
`Mem Controller,
`X
`t DMUX.
`DuF::rSD MPEG
`A/V Decoder
`
`FLASH
`PROM
`
`\_1406
`
`T3
`T5
`
`T3
`
`§
`
`in
`
`%
`
`S-VID
`
`I’ Aud—L(2)
`S/PW
`_ :-—§r;c:r_t_
`
`Cc1rd(s)
`
`v.90
`Modern
`
`R“
`
`
`
`140?
`PCI System Bus
`
`1405
`
`i_ ____ __iiLink
`1394
`;—|:]
`{SC/Link/PHY:—{j
`
`Nov Cluster
`
`FrontPune|
`r"'a
`
`E
`
`FIG. 21B
`
`27
`
`27
`
`

`
`U.S. Patent
`
`Jul. 7,2009
`
`Sheet 23 of 23
`
`US 7,558,472 B2
`
`
`
`2203
`
`PROCESSOR
`
`CORE
`
`1710.22
`
`28
`
`2202
`
`
`
`IDENTIFIER
`
`STATE
`
`ENGINE
`
`
`
`
`
`2205
`
`ID
`GENERATOR
`
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`US 2558.472 B2
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`MULTIMEDIA SIGNAL PROCESSING
`SYSTEM
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`CROSS REFERENCE TO RELATED
`APPl.l(..‘.»\'I'lONS
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`microprocessor from the high video data rates, thereby reduc-
`ing the microprocessor and system requirements. which are at
`a premium.
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`SUMMARY OF TI-llzi lNV'l9}N'l‘]ON
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`This application is a Continuation—in—part of U.S. patent
`application Ser. No. 09r‘827.029, filed on Apr. 5. 2001. and
`claims benefit of U .S. Provisional Patent Application Ser. No.
`601226.856, filed on Aug. 22. 2000. U.S. patent application
`Ser. No. 09r‘827_.029 is a Continuation of U.S. Pat. No. 6.233,
`389, Filed on Jul. 30. 1998.
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`BACKGROUND OF THE INVENTION
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`1. Technical Field
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`The invention relates to the time shifting of television
`broadcast signals. More particularly. the invention relates to
`the real time capture. storage. and display of television broad-
`cast Signals.
`2. Description of the Prior Art
`The Video Cassette Recorder (VCR) has changed the lives
`of television ('I‘V’] viewers throughout the world. The VCR
`has offered viewers the flexibility to timr.~s11ifi’I'V programs
`to match their lifestyles.
`The viewer stores TV programs onto magnetic tape using
`the VCR. The VCR gives the viewer the ability to play.
`rewind. fast—forward and pause the stored program material.
`These functions enable the viewer to pause the program play-
`back whenever he desires. fast forward through unwanted
`program material or commercials. and to replay favorite
`scenes. However. a VCR cannot both capture and play back
`information at the same time.
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`One approach to solving this problem is to use several
`VCRs. For example, iftwo video tape recorders are available,
`it might be possible to Ping—Pong between the two. in this
`case, tl1e first recorder is started at tl1e beginning of the pro-
`gram of interest. If the viewer wishes to rewind the broadcast.
`the second recorder begins recording, while the lirst recorder
`is halted. rewound to the appropriate place, and playback
`initiated. However. at least a third video tape recorder is
`required if the viewer wishes to fast forward to some point in
`titne after the initial rewind was requested. In this case. the
`third recorder starts recording the broadcast stream while the
`second is halted and rewound to the appropriate position.
`Continuing this exercise. one can quickly see that the equip-
`ment becomes unwieldy. unreliable. expensive. and hard to
`operate. while never supporting all desired functions. In addi-
`tion, tapes are of finite length, and may potentially end at
`inconvenient times, drastically lowering the value ofthe solu-
`tion.
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`The use of digital computer systems to solve this problem
`has been suggested. U.S. Pat. No. 5.3".-'1 .551 issued to Logan
`et al.. on Dec. 6. I994. teaches a method for concurrent video
`recording and playback. It presents a microprocessor con-
`trolled broadcast and playback device. Said device com-
`presses and stores video data onto a hard disk. However, this
`approach is dillicult to implement because the processor
`requirements for keeping up with the high video rates makes
`the device expensive and problematic. The microprocessor
`must be extremely fast to keep up with the incoming and
`outgoing video data.
`It would be advantageous to provide a multimedia signal
`processing system that gives the user the ability to simulta-
`neously record and play back TV broadcast programs. It
`would further be advantageous to provide a multimedia signal
`processing system that utilizes an approach that decouples the
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`The invention provides a multimedia signal processing
`system. The invention utilizes an easily manipulated. low co st
`multimedia storage and display system that allows the user to
`view a television broadcast program with the option of
`instantly reviewing previous scenes within the program. In
`addition. the invention allows the user to store selected tele-
`vision broadcast programs while the user is simultaneously
`watching or reviewing another program
`A preferred embodiment of the invention accepts televi-
`sion [’]'V) input streams in a multitude of forms. for example.
`analog forms such as National Television Standards Commit-
`tee (NTSC) or PAL broadcast. and digital fonns such as
`Digital Satellite System (D538). Digital Broadcast Services
`(DB5). or Advanced Television Standards Comrnittee
`(ATSC). Analog TV streams are converted to an Moving
`Pictures Experts Group (MPEG) formatted stream for ii1ter—
`nal transfer and manipulation. while pre-formatted MPEG
`streams are extracted from the digital TV signal and presented
`in a similar format to encoded analog streams.
`The invention parses the resulting MP1-3G stream and sepa-
`rates it into its video and audio components. lt then stores the
`components into temporary buffers. Events are recorded that
`indicate the type of component that has been found. where it
`is located, and when it occurred. The program logic is notified
`that an event has occurred and the data is extracted from the
`bulfers.
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`The pars er and event bu ffer decouple the CPU from having
`to parse the MPEG stream and front the real time nature ofthe
`data streams. This decoupling allows for slower CPU and bus
`speeds. which translates to lower system costs.
`The video and audio components are stored on a storage
`device. When the program is requested for display. the video
`and audio components are extracted from the storage device
`and reassembled into an MPEG stream. The MPEU stream is
`sent to a decoder. The decoder converts the MP1-Ki stream into
`TV output signals and delivers the TV output signals to a TV
`receiver.
`User control commands are accepted and sent through the
`system. These commands affect the flow of said MPEG
`stream and allow the user to view stored programs with at
`least the following functions: reverse. fast forward. play,
`pause. index. fastfslow reverse play. and fastfslow play.
`Furthermore. the invention incorporates a versatile system
`architecture that makes it possible to provide the invention in
`a variety of configurations. each adapted to receive input
`signals from a different source. At the highest level, the sys-
`tem board comprises an input section and art output section, in
`whic