USO0RE41076E

(19)

United States

(12) Reissued Patent

(10) Patent Number:

Chu (54)

US RE41,076 E

(45) Date of Reissued Patent:

PASSWORD PROTECTED MODULAR

*Jan. 12, 2010

OTHER PUBLICATIONS

COMPUTER METHOD AND DEVICE

(75) Inventor:

William W. Y. Chu, L05 A1105, CA (Us)

(73) Assignee: Acqis Technology, Inc., Mountain View, CA (Us) _

(*) 21

(

A

)

_

_

_

_

Clalmer'

Dirk S. Faegre et al., “CTOS Revealed”, http://WWW.byte. com/art/9412/sec13/art2.htm.*

’

Kelly Spang, “Component House: Design Technology for

Sep. 6, 2006

PCs in a snap’iNeoSystmes Offers Building Blocks”, Computer Reseller News, Apr. 21, 1997, Issue 732, Section:

Related US. Patent Documents

Channel

Reissue of:

“Think Modular”, PC Magazine, Jun. 10, 1997, WysiWyg:// 60/http://homeZdnet.com/pcmag/issues/1611/

Appl. No.:

09/183,493

pcmgoo72_htm_*

Flled'

Oct‘ 30’ 1998

Jesse Berst’s Anchor Desk, http://WWW.Zdnet.coin/an

chordesk/talkback/talkbacki56555.html, (Dec. 5, 1997), 1

G06F 13/14

(2006.01)

Page~

US. Cl. .......................... .. 726/34; 726/28; 713/183;

(Commued)

455/347; 455/349; 710/101

58)

http://WWW.techWeb.coin/se/

623212335 NOV- 20’ 2001

(51) In‘; C]_

(

Assembly,

directlink.cgi?CRN1 997042 1 S0054. *

(64) Patent N05 Issued:

(52)

http://techWeb.cmp.com/eet/neWs/97/949neWs/ef

fon_html_*

O"

(22) Filed:

paths”,

This patent is subject to a terminal dis-

1 N _ 11/517 601

pp '

chordesk/story/storyil5041111111,* Rick BoydiMerritt, “UpgradableiPC effort takes divergent

_

Notice:

Jesse Berst’s Anchor Desk, http://WWW.Zdnet.coin/an chordesk/talkback/talkbacki6555-hIm1-* Jesse Berst’s Anchor Desk, http://WWW.Zdnet.coin/an

Field of Classi?cation Search .

None

.

""""""" ".' """ "

.

.

(74) Attorney, Agent, or FirmACOOIey GodWard Kronish

See application ?le for complete search history.

LLP

References Cited

(57)

(56)

U~S~ PATENT DOCUMENTS

.

Prlmary Exammeriponnoreay Plch

ABSTRACT

A method and device for securing a removable Attached

3,996,585 A

12/1976 Hogan

Computer Module (“ACM”) 10.

4,623,964 A

11/1986 GetZ et a1‘

puter Module Bay (“CMB”) 40 Within a peripheral console

10 inserts into a Com

4,700,362 A

10/1987 Todd et al,

to form a functional computer such as a desktop computer or

_

portable computer. The present ACM 10 includes a locking

(Commued)

system, Which includes hardWare and softWare 600, 700, to

FOREIGN PATENT DOCUMENTS

prevent accidental removal or theft of the ACM from the

peripheral console. While ACM is in transit, further security EP

JP

722138 A1

7/1996

is necessary against illegal or unauthorized use. If ACM con

6'289953

10/1994

tains con?dential data, a high security method is needed to

W0

WO 92/18924

* 10/1992

WO

WO94/00097

1/1994

WO

WO95/13640

5/1995

WO

WO97/00481

*

Safe

ard a ainst theft g“

g

l/ 1997

'

35 Claims, 17 Drawing Sheets

// 1 COMPUTER MODULE BAY 40

MON'TOR _

13 15

2D

INSERT

11

“4'35"” "°"'°z1’5§ZZ="$;§§Z‘=’ °‘’ 10

ATTACHED COMPUTER

MODULE

PgRlPliTsclzpAL \lSOl. 20

US RE41,076 E Page 2

US. PATENT DOCUMENTS 4769764 A

9/1988 Levanon

6,002,442 A 6,003,105 A 6,006,243 A

4,872,091 A 4,890,282 A

10/1989 Maniwaetal. 12/1989 Lambertetal.

6,009,488 A 6,011,546 A

4,918,572 A

4/1990 Taweretal

6,012,145 A

4,939,735 A 5,056,141 A 5,086,499 A 5,103,446 A 5,191,581 A 5,251,097 A

5,278,509 5,278,730 5,293,497 5,311,397 5,317,477

A A A A A

7/1990 Fredericks etal. 10/1991 Dyke 2/1992 Mutone 4/1992 Fischer ..................... .. 370/236 3/1993 Woodburyet a1. ........ .. 370/364 10/1993 slmmonsetal

1/1994 l/1994 3/1994 5/1994 5/1994

Haynes etal. KikiniS Free HarshbergeretalGillett

12/1999 Li et a1. 12/1999 Vicard et a1. * 12/1999

Karidis ..................... .. 708/100

12/1999 Kavipumpu 1/2000 Bertram *

6,016,252 A 6,028,643 A

1/2000

Mathersetal. ............. .. 726/17

1/2000 pignoletetal‘ 2/2000 Jordan etal.

6,029,183 A

2/2000 Jenkins et a1.

6,038,621 A 6,040,792 A 6,046,571 A

3/2000 Gale etal‘ 3/2()()() Watson et 31‘ 4/2000 Bovio etal. ............... .. 320/113

6,052,513 6,069,615 6,070,214 6,088,224 6,088,752

*

A A A A A

4/2000 5/2000 5/2000 7/2000 7/2000 *

McLaren Abraham et a1. Ahern Gallagher et a1. Ahern

5,319,771 A

6/1994 Takéda

6,104,921 A

5331509 A

7/1994 K1191“?

6,157,534 A

12/2000 Gallagher et a1.

8/2000 Cosleyetal. ............. .. 455/349

12/2000 Ishibashietal. 1/2001 Papa et a1.

5355391 A 5,428,806 A

10/1994 HOIOWIIZ etal 6/1995 Poems

6,163,464 A 6,175,490 B1

5,436,857 A 5463742 A

7/1995 Nelson er 91 10/1995 Kobayashl

6,202,169 B1 6,208,522 B1

3/2001 RaZZaghe-Asra? et a1. 3/2001 Manweileretal.

6,216,185 B1 6,256,689 B1

4/2001 7/2001

5,519,843 A 5,539,616 A

5/1996 Moran etal. .............. .. 711/103 7/1996 Kikinis- ..................... .. 361/686

Chu Khosrowpour ____________ __ 710/300

5550710 A

8/1996 R?hamlm eta1~

6,260,155 B1

7/2001 Dellacona

5,550,861 A

8/1996 Chan et a1~

6,266,539 B1 *

7/2001

Pardo .................... .. 455/556.2

9/2001

Taylor et 31‘

5,572,441 A

11/1996 Boie ........................ .. 307/109

6,289,376 B1

5,578,940 5,600,800 5,603,044 5,606,717 5,608,608 5,623,637 5,630,057 5,638,521 5,640,302

11/1996 2/1997 2/1997 2/1997 3/1997 4/1997 5/1997 6/1997 6/1997

6,304,895 6,311,268 6,314,522 6,317,329 6,321,335 6,332,180 6,345,330 6,366,951 6,378,009

A A A A A A A A A

13111011 Kikinis et 31. Annapareddy eta1~ Farmw?ldet 91 Flintet 31. Jonesetal Hair Buchalaet al. Kikinis

B1 B1 B1 B1 B1 B1 B2 B1 B1

10/2001 10/2001 11/2001 11/2001 11/2001 12/2001 2/2002 4/2002 4/2002

Schneider etal. Chu Chu et a1.

Dowdy etal. Chu Kauffman et a1. Chu Schmidt Pinkston, 11 et a1.

5,648,762 A

7/1997 Ichimura et a1. ............ .. 726/34

6,381,602 B1

4/2002 shoroffet 31‘

5,659,773 A 5,663,661 A

8/1997 Huynh etal 9/1997 Dillon eta1~

6,393,561 B1 6,401,124 B1

5/2002 Hagiwaraetal. 6/2002 Yang etal.

9/1997 Hamirani .................. .. 361/686

6,425,033 B1

7/2002 Conway et 31‘

6,452,789 B1 6,452,790 B1 6,453,344 B1

9/2002 Pallotti et a1. 9/2002 Chu et a1. 9/2002 Ellsworth

5,673,174 A

5,680,126 A 5,689,654 A 5,721,837 A

10/1997 KikiniS 11/1997 Kikinis 2/1998 Kikinis

5,721,842 A

2/1998 Beasleyetal

6,496,361 B2

5,745,733 A

4/1998 Roblnson

6,549,966 B1

5,751,711 A

5/1998 Sakaue ..................... .. 370/431

6,564,274 B1

5,752,080 A 5,764,924 A

5/1998 Ryan 6/1998 H9118

6,643,777 B1 6,718,415 B1

5,774,704 A

6/1998 Williams .................. .. 713/501

6,725,317 B1

5,795,228 A

8/1998 Trumbull

7,099,981 B2

8/2006 Chu

5,809,538 A

9/1998 P<_>ll_m_ann

7,146,446 B2

12/2006 Chu

5,815,681 A

9/1998 Klklnls

5,819,050 A 5,826,048 A

10/1998 Boehling etal. 10/1998 Dempsey et a1.

5,838,932 A

11/1998 AlZien ...................... .. 710/314

5,848,249 A

12/1998 Garbus

5,859,669 A 5,862,381 A

1/1999 Prentice 1/1999 Advani et a1.

12/2002 Kimetal. 4/2003 Dickens et a1. 5/2003 Heath et 31‘

11/2003 Chu 4/2004 Chu 4/2004 Bouchier et 31‘

2001/0011312 A1*

8/2001

Chu .......................... .. 710/64

OTHER PUBLICATIONS

Jesse Berst’s Anchor Desk, http://www.Zdnet.com/an chordesk/story/storyil504.html, (Dec. 5, 1997), pp. 1A3.

5,907,566 A

5/1999

5,933,609 A

8/1999 Walker etal. ............. .. 710/304

BoydWIemn, RICK, “UngradeableePc effOIT takes dlver

5,941,965 A 5,960,213 A

g/1999 MOIOZ 8/1999 Wilson

gent paths”, http://techweb.cmp.com/eet/news/97/949news. efforthtml, (Jul. 31, 1998) pp. 1A3.

5,948,047 A

9/1999

Benson et a1.

_

Jenkins etal.

_

_

_

“

”

_

5,968,144 A 5,971,804 A

10/1999 Walker et a1‘ 10/1999 Gallagher et a1‘

Faegre,D1rk S.et al., CTOS Revealed ,Core Technologles, http://www.byte
5,977,989 A

11/1999 Lee etal.

pp. 1A6.

5,978,919 A

11/1999

5,982,363 A

D '

ll/1999 Nzilff

tal.

.

“

.

Eversys Corporatlon, Eversys System 8000 Consolldated

5,991,163 A

11/1999 Marconi et 31‘

5,991,g44 A

12/1999 Khosrowpour

Network Server Market and Product Overvlew,” S11de Pre

sentation downloaded from , (product

5,999,952 A

12/1999 Jenkins et al.

to be released Mar. 1, 1997) 20 pages, unknown date.

US RE41,076 E Page 3

Synder, Joel, “Better Management through Consolidation,”

Cubix, “Click on the front panel that matches your system”,

pp. 146 downloaded from the intemet @ http:// www.opus 1 .com/www/j ms/nwiconi08 1 8rev.html. (Aug. 1 8, 1 997). US. Appl. No. 12/322,858, ?led Feb. 5, 2009, William W. Y.

density/desity.htm>>, downloaded from web on Jun. 22, 2004, 1 pg.

Chu.

Agerwala, T., “SP2 System Architecture,” IBM Systems

(@2000)

<
Cubix Product Manual entitled, “Density System,” Chapter 4*Maintenance and Repair, (@2000) <> down

Joural, vol. 34, No. 2, pp. 1524184 (1995). Bemal, Carlos, product brochure entitled: “PowerSMP Series 4000” (Mar. 1998) <
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Windows/Article/ArticleID/ 3095/ 1 3095.html, downloaded from web on Jun. 22, 2004, 2 pgs. CETIA Brochure “CETIA Powerengine CVME 603e”, pp. 146 downloaded from the intemet at. http://www.cetia.com/ ProductAddOns/wpi47i0l .pdf on Feb. 15, 2006.

tro.htm>>, downloaded from web on Jun. 22, 2004, 2 pgs.

Cragle, Jonathan, “Density System 1100”, May 1999) <
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5199/5199.html>>, downloaded from web on Jun. 21, 2004,

chap*2.htm>>, downloaded from web on Jun. 22, 2004, 3

3 pgs.

pgs.

Crystal Advertisement for “Rackmount Computers”,

Cubix, “SP 5200 Series” Chapter 2*Switches & Jumpers,

(@2000i2004) <>, downloaded from web on Jun. 17, 2004, 8 pgs.

Cubix, “SP 5200XS Series Plugiin Computers”, (@2000)

<
(@2000)

<
sp5200Xs/spec.htm>>, downloaded from web on Jun. 22, 2004, 2 pgs.

<
(@2000) <
Cubix, “Click on the front panel that matches your system”,

sp5200/chap*3.htm>>, downloaded from web on Jun. 22, 2004, 3 pgs.

(@2000)

Cubix, “SP 5200 Series” Chapter3*Installation, (@2000)

<
density/density.htm>>, downloaded from web on Jun. 22, 2004, 1 pg.

Cubix, “DP 6200 ‘D’ Series Plugiin Computers” <>, downloaded from web on Jun. 22, 2004, 2 pgs.

<>, downloaded from web on Jun. 22, 2004, 4 pgs.

Cubix, “SP 5200 Series” Chapter4iTechnical Reference,

(@2000) <
Cubix, “Installing DP or SP Series Boards” (@2000)

<>, downloaded from web on Jun. 22, 2004, 2 pgs.

Cubix, “Powering On/Off or Resetting Plugiin Computers in an Density System”, (@2000) <
sp5200xs/chap*1.htm>>, downloaded from web on Jun. 22, 2004, 3 pgs.

Cubix, “What are Groups?”, (@2000) <>, downloaded from web on Jun. 22, 2004, 3 pgs.

down

eBay Advertisement for “Total IT Group Network Engines”,

Cubix, “Multiplexing Video, Keyboard & Mouse with Mul

AMDBI%3AMEBI3AIT&rd=1>>, Downloaded from web

port/techinfo/ system/density/ info/p ower.htm> >, loaded from web on Jun. 22, 2004, 2 pgs.

tiple Density Systems”, (@2000) <>, downloaded from web on Jun. 22, 2004, 2 pgs.

Cubix Product Brochure entitled, “Density System”,

(@2000)

<
density/density10.htm>> downloaded from web on Jun. 22, 2004, 3 pgs.

Cubix Product Brochure entitled, “Density System, Techni

cal Speci?cations”, (@2000) > downloaded from web on Jun. 22, 2004, 2 pgs.

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1*Introduction, (@2000) <>downloaded from

<
“Features Chart”, (Feb. 1, 1997) <>, downloaded from web on Jun. 23,2004, 3 pgs.

Feldman, Jonathan, “Rack Steady: The Four RackiMounted Servers That Rocked Our Networ ”, <
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Fetters, Dave, “Cubix HighiDensity Server Leads the Way

With Standout Management Software”, (Feb. 8, 1999)

<>, downloaded from web on Jun. 23, 2004, 5 pgs.

Gardner, Michael and Null, Christopher, “A Server Condo

web on Jun. 22, 2004, 5 pgs.

Cubix Product Manual entitled, “Density System”,

Chapter2*Installation, (@2000) < > downloaded

minium”,

<
806a042a.html>>, Jun. 23, 2004, 3 pgs. Harrison, Dave, “VME in the Military: The M1A2 Main

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Battle Tank Upgrade Relies on COTS VME” <
Cubix Product Manual entitled, “Density System”, Chapter

www.dy4.com>>>, (Feb 9, 1998), pp. 1434. Internet Telephony Roundup, “Industrial Computer”,

3*Operation,

(@2000),

<
techinfo/manuals/density/Chapi3.htm>> downloaded from

<
web on Jun. 22, 2004, 4 pgs.

up.htm>>, downloaded from web on Jun. 23, 2004, 5 pgs.

US RE41,076 E Page 4

Kelly Spang, “Component House: Design Technology for

Product Manual entitled “ERS II and ERS/FT II”, Chap. 3,

PCs in a snap’iNeoSystmes Offers Building Blocks”, Com

System Components, <>, doWnloaded from

puter Reseller News, Apr. 21, 1997, Issue 732, Section: Channel Assembly, http ://WWW.techWeb.com/se/ directlink.cgi?CRN1 9970421 S0054.

Web on Jun. 22, 2004, 21 pgs.

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“SQL Server and NT Cluster Manager Availability Demo,” Microsoft Server Programmer Developers Conference, Nov.

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DOCs/u48600xd.pdf on Feb. 15, 2006.

MPL,

“The

First

Rugged

AlliiniOne

Industrial

486FDX*133 MHZ PC” IPM 486 Brochure/IPM5 User

manual, 1998, pp. 1452.

Press Release: HiaWatha, IoWa, (Mar. 1, 1997) entitled “Crystal Group Products Offer Industrial PCs With Builtiin

Flexibility”,

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1997)

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<> doWnloaded from Web on Jun. 23, 2004, 4 pgs.

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Press Release: Kanata, Ontario, Canada, (Apr. 1998) entitled

1997,

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1101/ntent008.htm>> doWnloaded from the Web on Jun. 22,


2004, pg. NT07.

Williams, Dennis “EVERSYS Corp. System 8000”, Feb. 17,

pgs

1997)

Product Brochure entitled “SVME/DMil92 Pentium® II

702b070b.html>> downloaded from Web on Jun. 22, 2004, 4

Single Board Computer” (Jun. 1999) pp. 149. Product Brochure entitled “System 8000”, <>, doWnloaded from

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Web on Jun. 22, 2004, 4 pgs.

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Product Brochure entitled “ERS/FT II System”, (@2000)

<
<
Williams, Dennis, “Executive Summary: Consolidate NoW”,

(Feb. 17, 1997) <
ersft2.htm>>, doWnloaded from Web on Jun. 22, 2004, 4 pgs. Product Manual entitled: “ERS II and ERS/FT II,” Chap. 6,

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2004, 2 pgs.

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97feb/702b064a.html>> doWnloaded from Web on Jun. 23, * cited by examiner

US. Patent

Jan. 12, 2010

COMPUTER

MODLgbE BAY

Sheet 1 0f 17

US RE41,076 E

MONITOR

DESKTOP

PERIPHERAL

CONSOLE 20 1°

ATTACHED COMPUTER MODULE

FIG.1

US. Patent

Jan. 12, 2010

Sheet 2 0f 17

US RE41,076 E

OPENING FOR ENGAGING LOCK

US. Patent

Jan. 12, 2010

Sheet 3 0f 17

US RE41,076 E

FRONT

MANUAL KEY RELEASE

F 11 E:> ( ACM /" INSERTION BLOCKED

\. 29 "w PERIPHERAL

<

J 27

CONSOLE ENCLOSURE

19

r‘ COMPUTER MODULE BAY FRAME

FIG.3

US. Patent

Jan. 12, 2010

400

Sheet 4 0f 17

US RE41,076 E

17

17

10

I——L—I_?_ CMI CONNECTOR I"-‘———-I____ CMICONNECTOR .' ___8 f/

I \

F IIITEQEZCF ' FIE‘CIIQIEMI

I

:CONTROLLER I: BIOS-AND :

‘

|_ _ __

‘

4 1

CIIIIIOI

0

403

iI

CPQGNLODULE

I

( . mm)

I

i HEIGHT: (11147???)

I

I ‘?'gl? (5.748")

I

I

A!l

_' M“

I

31/2- HARD

I

DRIVE (25.4mm)

'

I /435 * .

|

_____ __

i

234mm

I

NORTH I

|

|— — — — — — — 1|

I

BR|DGE

I

:

I

I

l GRAPHICS '

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I

l- ---- --1

l

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REGULATOR

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I MA'IOCIEsU"

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i

421

I f/ 431

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COMPONENT

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l

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. CONNECTIONTO

I

I

|

429

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m

Imm-

------ ---

.

SECURITY

|

LOCK

T’ "5

3 FIG.4

LOCK CONTROL

' ’

-

*-

DEPTH

13

US. Patent

Jan. 12, 2010

Sheet 5 0f 17

US RE41,076 E

f/500

s01

ATTACHED CDMPuTER MODULE

)

I 523

PRIMARY HARD DISK w/ SECURITY PROGRAM

MAIN

s02 -r~

DRIVE

MEMORY 525

BUS E

€

- HDD CDNTRDLLER'

529w MEBNLIgRY 2 527

‘I

CPU

53’1

7

FLASH MEM I» 505

537 = Hog?spm WITHSBEIES & PASSWORD

[$1582

85%

[J 503

_

2%, C_

“1541 "1- 533

ii?

CONTROL 543-11

526

) GRAPHICS

521

I

358854"

51in

INTERFACE

\\

CONTROLLER

\\ 511

535

LOCK CONTROL

SUBSYSTEM

>\

519

507

‘

v

) l vIDED

\‘

509

517

FIG.5

_

{ 513 INTERFACE

CONNECTORS

US. Patent

Jan. 12, 2010

Sheet 6 0f 17

US RE41,076 E

ATTACHED COMPUTER MODULE

PROGRAM

T" 501

‘ DRIVE 7 BUS

7 HDD CONTROLLER x 503

FLASH MEM

T“ 533

WITLIJISBEIRS & I505

HOSIIJLSPCI

PASSWORD 507

I =

[J

HOST INTERFACE CONTROLLER

LOCK ONIOFF LOCK STATUS SOLENOID

DRIVER SECURITY |

LOCK

"‘

CONTROL B_IT

1 551

*P''

BIT \

l 549

509

551

"WLQC

557 553! LOCK STATUS SIGNAL

FIG.5A

US. Patent

Jan. 12, 2010

Sheet 7 0f 17

ACM INSERTED INTO CMB

600

US RE41,076 E

ACM OUTSIDE OF

700

PREVE [ TICEEGAL ugg )"T- 701

( POWER UP )"L 601 I

V

SECURITY

USE KEY

PROGRAM '1 603

To TURN

"L- 703

LOCK ON

604

l

605

,

ACM

NO

CANNOT

I

“\- 705

INSERT

LOCK

YES

606

INTO CMB

STAYS OFF

,

2609

SOFTWARE

TURNS I

607

TJcSIETSEK “~10?

LOCK ON

LOCK OFF

7

}

0s TURNS 612" POWER

POWER

DOWN

“I 611

FAILURE e17

,—-1l--\ ACM CAN

M8581’ \—/\ 709

USE KEY TO

RELEASE -..s1s

LOCK

STAYS ON 621

622 ‘K ‘Y

STLAQCéKON 1 623 SR‘ETE‘XSAE‘SE LOCK “625 U

ACM CAN

BE REMOVED 627

FIG.6

FIG-7

US. Patent

Jan. 12, 2010

Sheet 8 0f 17

ACM

[810

00

r840

CPU

US RE41,076 E

Peripheral Console

f9

[#40

f ‘I10

Primary Display

q00\

Device

{820

Primary ' Input

System Memory

Device Interface

[650 _

r920 ’

and

I000

Support

Hrgh

Imerface

f I

Secondary

and

Mass

Support

Storage

X950

:: lnterconneclron ;

Performance :1

Devices

Other Devices

#7630 ’

[830 Primary

-

Mass

7

Exgelrgsron f‘? 0

Storage

5 . Pnmary Power Supply

Secondary Power Supply

FIG._8

/ (‘130

US. Patent

Jan. 12, 2010

Sheet 12 0f 17

US RE41,076 E

I101

-BIOSI

PCK

a m m _m

POI

|_|_ m mm .u n. H my w w GdI1|

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US. Patent

Jan. 12, 2010

PCK

-—~

P01

--———- Drivel

Sheet 14 or 17

US RE41,076 E

PCK

ow

Receiver

‘

P01

§

P02 ____. Dvivel

>— p02

P03 --— Driver

é‘ p03

PCN —— OM

PCN

FIG. W‘

US. Patent

Jan. 12, 2010

Sheet 15 or 17

US RE41,076 E

Primary PCI Bus

PCl Clock Asynchronous

1‘

1

PCI Bus Controller XPBus Controller

Host Interface

to Control

Controller pLL F Clock

A

l

r' - - """"""" '" ‘i “ * - "— ';

XPBus _~\_

:

I

‘~~~:

pcK

P013210]:

\

é

PCKR

: PDR[3::O] RSTEP“ :

|

Peripheral

RSTEH?

Interface

vH t I Asynchronous

Controller

XPBUS

Controller 1 PLL

PCI Bus

IO

Clock F Controller

Comm

+

PClClock +

r

{v

1 PCI

Secondary PCI Bus

Device

FIG. l5