`1111111111111101111011111111q1101111111111110111111111111111
`
`11111111111111101111111111!!!!11111111 J11111111111111111110111111
`USOO6668246B1
`(10) Patent No.:
`US 6,668,246 B1
`US 6,668,246 B1
`US 6,668,246 B1
`(10) Patent No.:
`(to) Patent No.:
`(45) Date of Patent:
`Dec. 23, 2003
`(45) Date of Patent:
`Dec. 23, 2003
`(45) Date of Patent:
`Dec. 23, 2003
`
`(12) United States Patent
`(12) United States Patent
`(12) United States Patent
`Yeung et al.
`Yeung et al.
`Yeung et al.
`
`(54) MULTIMEDIA DATA DELIVERY AND
`(54)
`MULTIMEDIA DATA DELIVERY AND
`(54) MULTIMEDIA DATA DELIVERY AND
`PLAYBACK SYSTEM WITH MULTI-LEVEL
`PLAYBACK SYSTEM WITH MULTI-LEVEL
`PLAYBACK SYSTEM WITH MULTI-LEVEL
`CONTENT AND PRIVACY PROTECTION
`CONTENT AND PRIVACY PROTECTION
`CONTENT AND PRIVACY PROTECTION
`
`(75) Inventors: Minerva Ming-Yee Yeung, Sunnyvale,
`Inventors: Minerva Ming-Yee Yeung, Sunnyvale,
`(75)
`Inventors: Minerva Ming-Yee Yeung, Sunnyvale,
`(75)
`CA (US); Matthew J. Holliman,
`CA (US); Matthew J. Holliman,
`CA (US); Matthew J. Holliman,
`Libertyville, IL (US); Robert G. Liu,
`Libertyville, IL (US); Robert G. Liu,
`Libertyville, IL (US); Robert G. Liu,
`Sunnyvale, CA (US); William W.
`Sunnyvale, CA (US); William W.
`Sunnyvale, CA (US); William W.
`Macy, Palo Alto, CA (US); Boon-Lock
`Macy, Palo Alto, CA (US); Boon-Lock
`Macy, Palo Alto, CA (US); Boon-Lock
`Yeo, Sunnyvale, CA (US)
`Yeo, Sunnyvale, CA (US)
`Yeo, Sunnyvale, CA (US)
`
`(*) Notice:
`Notice:
`( * ) Notice:
`* )
`
`(73) Assignee: Intel Corporation, Santa Clara, CA
`(73)
`Assignee: Intel Corporation, Santa Clara, CA
`(73) Assignee: Intel Corporation, Santa Clara, CA
`(US)
`(US)
`(US)
`Subject to any disclaimer, the term of this
`Subject to any disclaimer, the term of this
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`patent is extended or adjusted under 35
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`U.S.C. 154(b) by 0 days.
`U.S.C. 154(b) by 0 days.
`(21) Appl. No.: 09/275,905
`(21)
`Appl. No.: 09/275,905
`(21) Appl. No.: 09/275,905
`(22) Filed:
`Mar. 24, 1999
`(22)
`Filed:
`Mar. 24, 1999
`(22) Filed:
`Mar. 24, 1999
`(51) Int. Cl. ................................................ G06F 17/60
` GO6F 17/60
`(51)
`Int. C1.7
` GO6F 17/60
`(51) Int. C1.7
`(52) U.S. Cl. ............................. 705/57; 380/211: 705/1:
` 705/57; 380/211; 705/1;
`(52)
`U.S. Cl.
` 705/57; 380/211; 705/1;
`(52) U.S. Cl.
`705/51; 713/150
`705/51; 713/150
`705/51; 713/150
`380/200, 201
`(58) Field of Search
` 380/200, 201,
`(58)
`Field of Search
` 380/200, 201,
`(58) Field of Search
`380/211; 705/ 50.51.52 s 4, 57. 71.7150
`380/211; 705/1, 50, 51, 52, 54, 57; 713/150
`380/211; 705/1, 50, 51, 52, 54, 57; 713/150
`s
`s a Yu’s a u-s a as a
`s a
`s
`References Cited
`References Cited
`References Cited
`
`(56)
`(56)
`(56)
`
`U.S. PATENT DOCUMENTS
`U.S. PATENT DOCUMENTS
`U.S. PATENT DOCUMENTS
`
` 380/44
`4,933,971 A * 6/1990 Bestock et al.
`380/44
`4,933,971 A * 6/1990 Bestock et al.
`4,933,971. A * 6/1990 Bestock et al. ............... 380/44
`5,638,448 A * 6/1997 Nguyen
` 380/29
`5,638,448 A * 6/1997 Nguyen ....................... 380/29
`5,638,448 A * 6/1997 Nguyen ...
`380/29
`
`JP
`JP
`JP
`
`5,689,566 A * 11/1997 Nguyen ...................... 713/155
`713/155
`5,689,566 A * 11/1997 Nguyen
`713/155
`5,689,566 A * 11/1997 Nguyen
`6,275,939 B1 * 8/2001 Garrison
`713/200
`6,275,939 B1 * 8/2001 Garrison
`713/200
`6,275,939 B1
`8/2001 Garrison ..................... 713/200
`6,298,446 B1 * 10/2001 Schreiber et al.
`713/201
`6,298,446 B1 * 10/2001 Schreiber et al.
`713/201
`6,298.446 B1 * 10/2001 Schreiber et al. ........... 713/201
`6,304,969 B1 * 10/2001 Wasserman et al.
`713/172
`6,304,969 B1 * 10/2001 Wasserman et al. ........ 713/172
`6,304,969 B1 * 10/2001 Wasserman et al.
`713/172
`6,353,892 B2 * 3/2002 Schreiber et al.
`713/201
`6,353,892 B2 * 3/2002 Schreiber et al.
`713/201
`6,353,892 B2 * 3/2002 Schreiber et al. ........... 713/201
`FOREIGN PATENT DOCUMENTS
`FOREIGN PATENT DOCUMENTS
`FOREIGN PATENT DOCUMENTS
`2000-148689 A * 5/2000
`2000-148689 A * 5/2000
`2000-148689 A * 5/2000
`OTHER PUBLICATIONS
`OTHER PUBLICATIONS
`OTHER PUBLICATIONS
`Bobrowski: "Database in a client/server world-Under
`Bobrowski: "Database in a client/server world—Under-
`Bobrowski: "Database in a client/server world—Under-
`Standing the unique challenges of keeping your client/server
`standing the unique challenges of keeping your client/server
`standing the unique challenges of keeping your client/server
`database environment secure'; DBMS, Sep. 1, 1994, vol. 7,
`database environment secure"; DBMS, Sep. 1, 1994, vol. 7,
`database environment secure"; DBMS, Sep. 1, 1994, vol. 7,
`No. 10, pp. 48–48, (Abstract Onlv).
`No. 10, pp. 48-48, (Abstract Only).*
`No. 10, pp. 48-48, (Abstract Only).*
`O. IU, pp
`, (Abstract Only)
`* cited by examiner
`* cited by examiner
`* cited by examiner
`Primary Examiner Edward R. Cosimano
`Primary Examiner—Edward R. Cosimano
`Primary Examiner—Edward R. Cosimano
`(74) Attorney, Agent, or Firm-Blakely, Sokoloff, Taylor &
`(74) Attorney, Agent, or Firm—Makely, Sokoloff, Taylor &
`(74) Attorney, Agent, or Firm—Blakely, Sokoloff, Taylor &
`Zafman LLP
`Zafman LLP
`Zafman LLP
`ABSTRACT
`(57)
`ABSTRACT
`(57)
`ABSTRACT
`(57)
`A content distribution System comprising a server platform
`A content distribution system comprising a server platform
`A content distribution system comprising a server platform
`and a client platform. The Server platform includes a
`and a client platform. The server platform includes a
`and a client platform. The server platform includes a
`memory unit to Store digital content and access control logic
`memory unit to store digital content and access control logic
`memory unit to store digital content and access control logic
`to activate content protection mechanisms that provide mul
`to activate content protection mechanisms that provide mul-
`to activate content protection mechanisms that provide mul-
`tiple levels of access protection to the digital content. In
`tiple levels of access protection to the digital content. In
`tiple levels of access protection to the digital content. In
`communication with the Server platform, the client platform
`communication with the server platform, the client platform
`communication with the server platform, the client platform
`plays back Segments of the digital content at one of a
`plays back segments of the digital content at one of a
`plays back segments of the digital content at one of a
`plurality of quality levels.
`plurality of quality levels.
`plurality of quality levels.
`
`24 Claims, 9 Drawing Sheets
`24 Claims, 9 Drawing Sheets
`24 Claims, 9 Drawing Sheets
`
`Data
`Data
`
`22
`220
`220
`
`( Content )--er.
`t
`EN2
`EN0
`EN2-0.
`
`225
`2
`225
`
`236
`( -230
`( -230
`Edecompression
`Decompression
`Decompression
`Unit
`Unit
`Unit
`
`f
`
`Process ControlLogic
`Process COMM! Logic
`Process Control Logic
`210
`2.
`210
`4 4 4 4 4 4
`ENEN2EN3EN4 ENS EN3
`EN1 EN2 EN3 EN4 ENS EN6
`EN! EN2 EN3 EN4 ENS EN6
`
`-------------------
`s
`15
`( -215
`1"
`
`Robust
`Robust
`Robust
`Watermark HEN
`Wateimaik
`Watermark 1-ENI
`insertion
`Insertion
`Insertion
`
`FROM
`FROM
`FROM
`120
`120
`12
`Request80
`Request 180
`Request 180
`Client
`Client
`Client
`identifier
`Identifier
`Identifier
`(CPUID)
`(CPU ID)
`(CPU JD)
`Order Info
`Order info
`Order Info
`
`5
`185
`185
`
`y
`Jit
`235
`235
`235
`EN3
`EN3
`EN3- R
`r c Content
`
`REC_ID
`REC_ID
`Compression w
`Compression
`Compress].
`Unit
`Unit
`
`:
`
`/
`
`Content
`k
`
`240
`
`)
`)
`
`---------------------wou
`
`r 200 Unit
`Memory EN4-0.
`200 Unit
`
`ENS-4.
`ENS
`
`KEY] 4.
`KEY
`251 -
`250 22551; KEY1
`250 -
`2501 2255/2-.--- KEYS'- /
`252
`KEY
`EN6
`EN6-1.
`
`Fast Waternark
`ao
`Fasth,serdSSter
`
`Fast Watermark
`Insertion
`280
`280
`280
`Insertion
`Insertion
`Visual. Perceptual
`Isual/Percmptal
`Visual/Perceptual
`Scrambiing
`Scrambling
`Scrambling
`260
`260
`260
`Data Scrambling
`Data Scrambling
`Data Scrambling
`(Encrypt
`(Encrypt)
`(Encrypt)
`270
`270
`270
`
`:
`:
`
`)
`R.
`TV
`Delivered'.
`Delivered'.
`iDelivered
` Content
`Content
`Content
`290
`290
`29t
`
`
`
`CEient-Based
`Client-Based
`Client-Based
`Information
`Information
`information
`
`185
`185
`35
`
`Authentication
`Authentication
`Authentication
`Check
`Check
`Check
`(CPUIDs, REC IDs,
`(CPU_1Ds, REC_IDs,
`(CPU_lDs, REC_IDs,
`etc.)
`etc.)
`
`Key
`Key
`Key
`Generation
`Generation
`Generation
`1940.s
`(Mapping
`(Mapping
`bmnion
`Function)
`Function)
`255
`255
`255
`
`
`
`WER
`SERVER
`SERVER
`p
`PLATFORM
`PLATFORM
`f
`110
`110
`
`YS 250
`YS 250
`Y1 5
`RI
`KEY!
`252
`252
`
`DISH-Blue Spike-246
`Exhibit 1014, Page 0001
`
`

`

`U.S. Patent
`luaiud 'S'fl
`Waled *S11
`
`Dec. 23, 2003
`
`Sheet 1 of 9
`6 JO 1 lamIS
`6 JO I lamiS
`
`HI 917Z`899`9 Sfl US 6,668,246 B1
`is 917e899`9 Sf1
`
`
`
`140
`140
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`135
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`SIG
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`155
`155
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`CHIPSET
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`150
`150
`
`120
`120
`
`PLATFORM
`PLATFORM
`
`CLIENT
`CLIENT
`
`185
`185
`
`<_TENT-BASED INFO
`CLTFNT-BASED INFO
`
`DEVICE
`DEVICE
`
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`
`COMMUNICATION
`COMMUNICATION
`
`' 180
`18
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`REQUEST
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`CONTENT
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`110
`110
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`
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`
`SERVER
`SERVER
`
`100
`100
`
`FIG. 1
`
`
`
`
`
`DISH-Blue Spike-246
`Exhibit 1014, Page 0002
`
`

`

`U.S. Patent
`U.S. Patent
`U.S. Patent
`
`Dec. 23, 2003
`Dec. 23, 2003
`Dec. 23, 2003
`
`Sheet 2 of 9
`Sheet 2 of 9
`Sheet 2 of 9
`
`US 6,668,246 B1
`US 6,668,246 B1
`US 6,668,246 B1
`
`FIG. 2
`FIG, 2
`
`Data
`Data
`Data
`
`220
`2201/4
`221
`
` ►
`Content
`Content
`EN2
`EN2
`EN2—*
`
`225
`225
`225 '1
`
`r230
`( -230
`230
`Decompression
`Decompression
`Decompression
`Unit
`Unit
`Unit
`
`-
`
`r215
`25
`r215
`
`
`
`
`
`
`
`►
`
`Robust
`Robust
`Robust
`Watermark
`-EN1;
`Watermark 4--EN]
`Watermark 4-EN1
`Insertion
`Insertion
`Insertion
`
`
`
`
`
`
`
`
`
`FROM
`FROM
`FROM
`120
`120
`120
`Request 180
`Request 180
`Request 180
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`Client
`Client
`Identifier
`Identifier
`Identifier
`(CPUID)
`(CPU_ID)
`(CPU_ID)
`Order Info
`Order Info
`
`
`
`
`
`85
`}185
`}185
`
`•
`•
`
`REC_ID
`REC_ID
`
`Process Control Logic
`Process Control Logic
`210
`210
`
`EN1 EN2 EN3 EN4 ENS EN6
`EN1 EN2 EN3 EN4 EN5 EN6
`
`(
`
`235
`235
`EN3-10
`EN3
`
`Compression
`Compression
`Unit
`Unit
`
`rC Content
`240
`240
`
`K Content
`CD
`r Memory EN4
`r Memory
`t
`200
`200 Unit
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`EN4
`
`ENS
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`Client-Based
`Client-Based
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`Information
`Information
`Information
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`250'
`250
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`251
`251
`252
`252
`
`185
`85
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`/
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`280
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`Fast Watermark
`Fast Watermark
`280
`280
`Insertion
`Insertion
`Visual/Perceptual
`Visual/Perceptu
`Visual/Perceptual
`Scrambling
`Scrambling
`Scrambling
`260
`260
`260
`
`Disting
`Data Scrambling
`Data Scrambling
`(Encrypt)
`(Encrypt)
`C
`Er
`270
`270
`
`V
`
`SERVER
`SERVER
`SERVER
`PLATFORM
`PLATFORM
`PLATFORM
`
`110
`110
`10
`
`Delivered
`Delivere
`Delivered
`Content
`Content
`Content
`290
`290
`290
`
`185 /
`
`
`
`Authentication
`Authentication
`Authentication
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`Check
`Check
`(CPUIDs, REC IDs,
`(CPU_TDs, REC_1Ds,
`(CPUJ:Ds, REC_1D
`etc.)
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`etc.)
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`
`
`Key
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`255
`255
`255
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`KEYS 250
`KEYS 250
`KEYS 250
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`KEY 1
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`251
`251
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`KEY1
`KEY
`
`252
`252
`252
`
`
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`
`
`
`
`
`
`
`
`
`
`DISH-Blue Spike-246
`Exhibit 1014, Page 0003
`
`

`

`U.S. Patent
`U.S. Patent
`U.S. Patent
`
`Dec. 23, 2003
`Dec. 23, 2003
`Dec. 23, 2003
`
`Sheet 3 of 9
`Sheet 3 of 9
`Sheet 3 of 9
`
`US 6,668,246 B1
`US 6,668,246 B1
`US 6,668,246 B1
`
`
`
`0 MPEG Video Content Delivery System
`C MPEG Video Content Delivery System
`
`Fr4
`
`370
`370
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`312
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`300
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`
`382
`382
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`330-
`330
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`Source
`340
`340
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`340
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`360
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`Watermarking Message
`Watermarking Message'
`
`350
`350
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`FIG, 3
`FIG 3
`FIG, 3
`
`DISH-Blue Spike-246
`Exhibit 1014, Page 0004
`
`

`

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`FIG, 4
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`120
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`150
`
`DISH-Blue Spike-246
`Exhibit 1014, Page 0005
`
`

`

`HI 917Z`899`9 Sfl US 6,668,246 B1
`is 917e899`9 Sf1
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`6 JO S lamIS
`6 JO i lamiS
`Sheet 5 of 9
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`Dec. 23, 2003
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`U.S. Patent
`Waled *S11
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`
`DISH-Blue Spike-246
`Exhibit 1014, Page 0006
`
`

`

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`

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`US 6,668,246 B1
`US 6,668,246 B1
`US 6,668,246 B1
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`1
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`MULTIMEDIA DATA DELIVERY AND
`MULTIMEDIA DATA DELIVERY AND
`MULTIMEDIA DATA DELIVERY AND
`PLAYBACK SYSTEM WITH MULTI-LEVEL
`PLAYBACK SYSTEM WITH MULTI-LEVEL
`PLAYBACK SYSTEM WITH MULTI-LEVEL
`CONTENT AND PRIVACY PROTECTION
`CONTENT AND PRIVACY PROTECTION
`CONTENT AND PRIVACY PROTECTION
`
`BACKGROUND
`BACKGROUND
`BACKGROUND
`
`2
`2
`2
`FIG. 3 is an embodiment of a screen menu produced at the
`FIG. 3 is an embodiment of a screen menu produced at the
`FIG. 3 is an embodiment of a screen menu produced at the
`Server platform for Selecting the origin of the content and the
`server platform for selecting the origin of the content and the
`server platform for selecting the origin of the content and the
`level of access control based on the Selected content pro
`level of access control based on the selected content pro-
`level of access control based on the selected content pro-
`tection mechanisms.
`tection mechanisms.
`tection mechanisms.
`FIG. 4 is an illustrative block diagram of an embodiment
`FIG. 4 is an illustrative block diagram of an embodiment
`FIG. 4 is an illustrative block diagram of an embodiment
`of a client platform of the content distribution system of
`of a client platform of the content distribution system of
`of a client platform of the content distribution system of
`FIG. 1.
`FIG. 1.
`FIG. 1.
`1. Field
`1. Field
`1. Field
`FIG. 5 is an embodiment of a screen display produced by
`FIG. 5 is an embodiment of a screen display produced by
`FIG. 5 is an embodiment of a screen display produced by
`The present invention relates to the field of data security.
`The present invention relates to the field of data security.
`The present invention relates to the field of data security.
`the client platform of FIG. 4 when the content client
`More particularly, this invention relates to a platform and
`the client platform of FIG. 4 when the content client
`the client platform of FIG. 4 when the content client
`More particularly, this invention relates to a platform and
`More particularly, this invention relates to a platform and
`10 platform is unable to pass a first level of access control.
`10
`platform is unable to pass a first level of acceSS control.
`corresponding method for protecting content through mul
`platform is unable to pass a first level of access control.
`corresponding method for protecting content through mul-
`corresponding method for protecting content through mul-
`tiple content control.
`FIG. 6 is an embodiment of a Screen display featuring
`tiple content control.
`tiple content control.
`FIG. 6 is an embodiment of a screen display featuring
`FIG. 6 is an embodiment of a screen display featuring
`degraded digital content produced by the client platform of
`2. General Background
`degraded digital content produced by the client platform of
`degraded digital content produced by the client platform of
`2. General Background
`2. General Background
`FIG. 4 when the client platform is unable to pass a second
`FIG. 4 when the client platform is unable to pass a second
`FIG. 4 when the client platform is unable to pass a second
`For over fifty years, the entertainment industry has pro
`For over fifty years, the entertainment industry has pro-
`For over fifty years, the entertainment industry has pro-
`level of acceSS control.
`level of access control.
`level of access control.
`Vided audio-visual information to the general populous in
`vided audio-visual information to the general populous in
`vided audio-visual information to the general populous in
`FIG. 7 is an embodiment of a screen display featuring a
`FIG. 7 is an embodiment of a screen display featuring a
`the form of television programming. When transmitted in an
`FIG. 7 is an embodiment of a screen display featuring a
`the form of television programming. When transmitted in an
`the form of television programming. When transmitted in an
`user identification window that prompting input of user
`user identification window that prompting input of user
`analog format Such as National Television Systems Com
`user identification window that prompting input of user
`analog format such as National Television Systems Com-
`analog format such as National Television Systems Com-
`information before removing visual degradation from the
`mittee (NTSC) or Phase Alternating Line (PAL), this pro
`information before removing visual degradation from the
`information before removing visual degradation from the
`mittee (NTSC) or Phase Alternating Line (PAL), this pro-
`mittee (NTSC) or Phase Alternating Line (PAL), this pro-
`digital content.
`gramming is Somewhat protected due to the inherent nature
`digital content.
`digital content.
`gramming is somewhat protected due to the inherent nature
`gramming is somewhat protected due to the inherent nature
`of analog signaling. For example, analog Signals are trouble
`FIG. 8 is an embodiment of a screen display featuring a
`of analog signaling. For example, analog signals are trouble-
`of analog signaling. For example, analog signals are trouble-
`FIG. 8 is an embodiment of a screen display featuring a
`FIG. 8 is an embodiment of a screen display featuring a
`fingerprinting menu to provide ownership information con
`Some to illicitly copy and redistribute. Also, the recorded
`some to illicitly copy and redistribute. Also, the recorded
`some to illicitly copy and redistribute. Also, the recorded
`fingerprinting menu to provide ownership information con-
`fingerprinting menu to provide ownership information con-
`copies have poorer image quality than the original program
`cerning the digital content prior to playback on the content
`copies have poorer image quality than the original program-
`copies have poorer image quality than the original program-
`cerning the digital content prior to playback on the content
`cerning the digital content prior to playback on the content
`ming.
`client platform.
`ming.
`ming.
`client platform.
`client platform.
`Due to advances in digital processing technology and
`FIG. 9 is an illustrative block diagram of a second
`Due to advances in digital processing technology and
`Due to advances in digital processing technology and
`FIG. 9 is an illustrative block diagram of a second
`FIG. 9 is an illustrative block diagram of a second
`acceptance of the Internet, digital content distribution is now
`embodiment of the content distribution system of FIG. 1.
`25
`acceptance of the Internet, digital content distribution is now
`acceptance of the Internet, digital content distribution is now
`25 embodiment of the content distribution system of FIG. 1.
`25 embodiment of the content distribution system of FIG. 1.
`growing in popularity. Presently, original equipment manu
`growing in popularity. Presently, original equipment manu-
`growing in popularity. Presently, original equipment manu-
`facturers (OEMs) are providing personal computers with
`DETAILED DESCRIPTION
`DETAILED DESCRIPTION
`DETAILED DESCRIPTION
`facturers (OEMs) are providing personal computers with
`facturers (OEMs) are providing personal computers with
`open, programmable architectures that are capable of receiv
`open, programmable architectures that are capable of receiv-
`open, programmable architectures that are capable of receiv-
`The present invention relates to a platform and corre
`The present invention relates to a platform and corre-
`The present invention relates to a platform and corre-
`ing and/or transmitting audio-Visual information in a digital
`ing and/or transmitting audio-visual information in a digital
`ing and/or transmitting audio-visual information in a digital
`sponding method to protect content from unauthorized
`sponding method to protect content from unauthorized
`sponding method to protect content from unauthorized
`format. In many instances, the digitized audio-visual infor
`format. In many instances, the digitized audio-visual infor-
`format. In many instances, the digitized audio-visual infor-
`observation and/or manipulation through hardware-based
`observation and/or manipulation through hardware-based
`observation and/or manipulation through hardware-based
`mation is encrypted before transmission and decryption
`mation is encrypted before transmission and decryption
`mation is encrypted before transmission and decryption
`identification and a variety of content protection mecha
`identification and a variety of content protection mecha-
`identification and a variety of content protection mecha-
`upon receipt. Thus, most conventional personal computers
`upon receipt. Thus, most conventional personal computers
`upon receipt. Thus, most conventional personal computers
`nisms. Selected combinations of content protection mecha
`nisms. Selected combinations of content protection mecha-
`nisms. Selected combinations of content protection mecha-
`only rely on a single content protection mechanism (e.g.,
`only rely on a single content protection mechanism (e.g.,
`only rely on a single content protection mechanism (e.g.,
`nisms combined with hardware-based identification can
`nisms combined with hardware-based identification can
`nisms combined with hardware-based identification can
`encryption and decryption) that either provides program
`encryption and decryption) that either provides program-
`encryption and decryption) that either provides program-
`provide different levels of access control. Each level of
`provide different levels of access control. Each level of
`provide different levels of access control. Each level of
`ming in full quality or prevents the programming from being
`ming in full quality or prevents the programming from being
`ming in full quality or prevents the programming from being
`acceSS control is associated with a unique degree of protec
`access control is associated with a unique degree of protec-
`access control is associated with a unique degree of protec-
`displayed. Due to a lack of multiple content protection
`displayed. Due to a lack of multiple content protection
`displayed. Due to a lack of multiple content protection
`tion against unauthorized observation and/or manipulation
`tion against unauthorized observation and/or manipulation
`tion against unauthorized observation and/or manipulation
`mechanisms, conventional computers are unable to protect
`mechanisms, conventional computers are unable to protect
`mechanisms, conventional computers are unable to protect
`of content. Hence, each level of acceSS control comprises:
`of content. Hence, each level of access control comprises:
`of content. Hence, each level of access control comprises:
`the decrypted, digitized Video from being observed by an
`the decrypted, digitized video from being observed by an
`the decrypted, digitized video from being observed by an
`one or more authentication checks of a client identifier
`one or more authentication checks of a client identifier
`one or more authentication checks of a client identifier
`unauthorized user or manipulated (e.g., copied, altered, etc.)
`unauthorized user or manipulated (e.g., copied, altered, etc.)
`unauthorized user or manipulated (e.g., copied, altered, etc.)
`and/or auxiliary information associated with the content
`and/or auxiliary information associated with the content
`and/or auxiliary information associated with the content
`by a malicious program during playback. This has greatly
`by a malicious program during playback. This has greatly
`by a malicious program during playback. This has greatly
`purchaser, content transformation and distortion; and pos
`purchaser; content transformation and distortion; and pos-
`purchaser; content transformation and distortion; and pos-
`impeded the expansion of digital content distribution.
`impeded the expansion of digital content distribution.
`impeded the expansion of digital content distribution.
`sibly extraction of meta-data from delivered content.
`sibly extraction of meta-data from delivered content.
`sibly extraction of meta-data from delivered content.
`Therefore, it would be desirable to create a platform and
`Therefore, it would be desirable to create a platform and
`Therefore, it would be desirable to create a platform and
`It should be apparent that certain embodiments are
`It should be apparent that certain embodiments are
`It should be apparent that certain embodiments are
`method for protecting digital content through hardware
`method for protecting digital content through hardware-
`method for protecting digital content through hardware-
`described in order to provide a thorough understanding of
`described in order to provide a thorough understanding of
`described in order to provide a thorough understanding of
`based identification and a variety of content protection
`based identification and a variety of content protection
`based identification and a variety of content protection
`the invention; however, these embodiments should