a 102 6
US006885954B2
(12) United States Patent
(10) Patent No.: (45) Date of Patent:
Jones et al.
(54) SEQUENCE TIME DOMAIN
4,947,425 A
RE34,972 5,570,217 5,621,518 RE35,607
REFLECTOMETRY USING COMPLEMENTARY GOLAY CODES
(75) Inventors: Keith R. Jones, Irvine, CA (US); Gilberto Isaac Sada Trevino, Irvine, CA (US); Ragnar H. Jonsson, Reykjavik (IS); William W. Jones, Aliso Viejo, CA (US)
6,028,661 6,075,628 6,512,610 6,534,997
A A B1 B1
6,547,453 B1 2002/0114383 A1
Subject to any disclaimer, the term of this patent is extended or adjusted under 35
Horiguchi et al. Fleuren Beller Nagamune et al.
12/1997 Bauer et al. *
6,542,228 B1
Newport Beach, CA (US)
Notice:
6/1995 10/1996 4/1997 9/1997
5,699,402 A
(73) Assignee: Mindspeed Technologies, Inc., (*)
8/1990 GriZmala et al.
E A A E
5,884,231 A
US 6,885,954 B2 Apr. 26, 2005
3/1999
Perdue et al. ............... .. 702/28
2/2000 6/2000 1/2003 3/2003
Minami et al. Fisher et al. Minami et al. Horishita et al.
4/2003 Hartog 4/2003 Stummer et al. 8/2002 Belge et al.
* cited by examiner
U.S.C. 154(b) by 47 days.
Primary Examiner—EdWard Raymond
(21) Appl. No.: 10/465,064 Jun. 18, 2003 (22) Filed: Prior Publication Data (65)
(74) Attorney, Agent, or Firm—Weide & Miller, Ltd.
(57)
Amethod and system for performing sequence time domain re?ectometry over a communication channel to determine
US 2004/0019443 A1 Jan. 29, 2004
the location of line anomalies in the communication channel is disclosed. In one embodiment, the system generates a sequence signal and transmits the sequence signal over an optical channel. The system receives one or more re?ection
Related US. Application Data
(63) (51) (52) (58)
ABSTRACT
Continuation-in-part of application No. 10/095,825, ?led on Mar. 11, 2002, which is a continuation-in-part of application No. 09/810,932, ?led on Mar. 16, 2001.
signals over the optical channel and performs re?ection signal processing on the re?ection signal. In one
Int. Cl.7 .............................................. .. G06F 19/00
embodiment, the optical re?ection is transformed to an
US. Cl. ....................................... .. 702/79; 356/731
electrical signal and correlated With the original sequence signal to generate a correlated signal. The time betWeen the start of the re?ection signal and a subsequent point of correlation and the rate of propagation reveals a line anomaly location. A circulator, beam splitter, or any other similar device may direct the re?ection signal to the appa
Field of Search ........................ .. 702/79, 189, 190;
385/24, 88, 89—91; 356/731; 324/531, 533, 534; 714/25 References Cited
(56)
ratus con?gured to perform re?ection signal processing. U.S. PATENT DOCUMENTS 4,719,643 A
6 Claims, 28 Drawing Sheets
1/1988 Beeman
108
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104
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Communication Interface
102g
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Apr. 26,2005
Sheet 3 0f 28
US 6,885,954 B2
/
w_:mUcQ
(12) United States Patent
(10) Patent No.: (45) Date of Patent:
Jones et al.
(54) SEQUENCE TIME DOMAIN
4,947,425 A
RE34,972 5,570,217 5,621,518 RE35,607
REFLECTOMETRY USING COMPLEMENTARY GOLAY CODES
(75) Inventors: Keith R. Jones, Irvine, CA (US); Gilberto Isaac Sada Trevino, Irvine, CA (US); Ragnar H. Jonsson, Reykjavik (IS); William W. Jones, Aliso Viejo, CA (US)
6,028,661 6,075,628 6,512,610 6,534,997
A A B1 B1
6,547,453 B1 2002/0114383 A1
Subject to any disclaimer, the term of this patent is extended or adjusted under 35
Horiguchi et al. Fleuren Beller Nagamune et al.
12/1997 Bauer et al. *
6,542,228 B1
Newport Beach, CA (US)
Notice:
6/1995 10/1996 4/1997 9/1997
5,699,402 A
(73) Assignee: Mindspeed Technologies, Inc., (*)
8/1990 GriZmala et al.
E A A E
5,884,231 A
US 6,885,954 B2 Apr. 26, 2005
3/1999
Perdue et al. ............... .. 702/28
2/2000 6/2000 1/2003 3/2003
Minami et al. Fisher et al. Minami et al. Horishita et al.
4/2003 Hartog 4/2003 Stummer et al. 8/2002 Belge et al.
* cited by examiner
U.S.C. 154(b) by 47 days.
Primary Examiner—EdWard Raymond
(21) Appl. No.: 10/465,064 Jun. 18, 2003 (22) Filed: Prior Publication Data (65)
(74) Attorney, Agent, or Firm—Weide & Miller, Ltd.
(57)
Amethod and system for performing sequence time domain re?ectometry over a communication channel to determine
US 2004/0019443 A1 Jan. 29, 2004
the location of line anomalies in the communication channel is disclosed. In one embodiment, the system generates a sequence signal and transmits the sequence signal over an optical channel. The system receives one or more re?ection
Related US. Application Data
(63) (51) (52) (58)
ABSTRACT
Continuation-in-part of application No. 10/095,825, ?led on Mar. 11, 2002, which is a continuation-in-part of application No. 09/810,932, ?led on Mar. 16, 2001.
signals over the optical channel and performs re?ection signal processing on the re?ection signal. In one
Int. Cl.7 .............................................. .. G06F 19/00
embodiment, the optical re?ection is transformed to an
US. Cl. ....................................... .. 702/79; 356/731
electrical signal and correlated With the original sequence signal to generate a correlated signal. The time betWeen the start of the re?ection signal and a subsequent point of correlation and the rate of propagation reveals a line anomaly location. A circulator, beam splitter, or any other similar device may direct the re?ection signal to the appa
Field of Search ........................ .. 702/79, 189, 190;
385/24, 88, 89—91; 356/731; 324/531, 533, 534; 714/25 References Cited
(56)
ratus con?gured to perform re?ection signal processing. U.S. PATENT DOCUMENTS 4,719,643 A
6 Claims, 28 Drawing Sheets
1/1988 Beeman
108
CPE
5 a 100
104
0.0.
\|\
Communication Interface
102g
/120
Switch
PSTN
a
116
106
122
/
112
K
ISP
6
Internet
1) 1 10
118
U.S. Patent
A p r.
Shw 1
M
n,
US 6,885,954 B2
8
0
6m595
W. m:
zkwa
w:
ow?
.5 F
mm?
.0 63m
41/?
mm:
wow
cozmE
motE
N: wow
we?
mu
6:
00*
U.S. Patent
Apr. 26,2005
Sheet 3 0f 28
US 6,885,954 B2
/
w_:mUcQ
