| |
 |
|
Class Information
Number: 379/30
Name: Telephonic communications > Diagnostic testing, malfunction indication, or electrical condition measurement > Testing of subscriber loop or terminal > Loop impedance (e.g., resistance, capacitance)
Description: Subject matter for measuring the electrical impedance along and across a subscriber line or terminal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620155 |
Method and apparatus for automated asymmetric digital subscriber line loop testing |
Nov. 17, 2009 |
| 7529348 |
Method of performing insertion loss estimation |
May. 5, 2009 |
| 7436935 |
Qualifying telephone lines for data transmission |
Oct. 14, 2008 |
| 7418083 |
Telecommunications line parameter estimation |
Aug. 26, 2008 |
| 7362850 |
Method and arrangement for estimation of line properties |
Apr. 22, 2008 |
| RE40020 |
Impedance blocking filter circuit |
Jan. 22, 2008 |
| 7302046 |
Method for the detection of impedances and for the qualification of the telephone lines |
Nov. 27, 2007 |
| 7295654 |
Digital kick meter and graphical user interface (GUI) |
Nov. 13, 2007 |
| 7263174 |
Predicting performance of telephone lines for data services |
Aug. 28, 2007 |
| 7235979 |
Apparatus and method for measuring loop insertion loss single-endedly |
Jun. 26, 2007 |
| RE39432 |
Impedance blocking filter circuit |
Dec. 19, 2006 |
| 7149285 |
Dynamic, automated double-ended system and method for testing and qualifying metallic telecommunication loops |
Dec. 12, 2006 |
| 7073108 |
Communications jacks including test circuits and related circuits and methods |
Jul. 4, 2006 |
| 7072385 |
Load coil and DSL repeater including same |
Jul. 4, 2006 |
| 7058305 |
Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system |
Jun. 6, 2006 |
| 7050548 |
Localization of customer premises in a local loop based on reflectometry measurements |
May. 23, 2006 |
| 7012991 |
Qualifying telephone lines for data transmission |
Mar. 14, 2006 |
| 6975706 |
Capacitance measurement-based mechanism for locating open telecommunication line fault |
Dec. 13, 2005 |
| 6901091 |
Electronic driver circuit for directly modulated semiconductor lasers |
May. 31, 2005 |
| 6876725 |
Single ended line probing in DSL system |
Apr. 5, 2005 |
| 6873684 |
System and method for estimating the capacity of a local loop to carry data |
Mar. 29, 2005 |
| 6865257 |
Method for resolving trouble in a connection having a plurality of components |
Mar. 8, 2005 |
| 6859051 |
Systems and methods for impedance synthesis |
Feb. 22, 2005 |
| 6765988 |
Automated dispatching from a telephone cable air pressure monitoring system |
Jul. 20, 2004 |
| 6757382 |
Quasi ground fault interruption signal-based activation of emergency pots by-pass paths for line-powered digital subscriber loop |
Jun. 29, 2004 |
| 6754309 |
Communication device and access network device |
Jun. 22, 2004 |
| 6747205 |
Device for assisting in the measurement of the earth resistance |
Jun. 8, 2004 |
| 6741675 |
Method and apparatus for generating an audible tone in DSL environment |
May. 25, 2004 |
| 6700387 |
Systems and methods for impedance synthesis |
Mar. 2, 2004 |
| 6668041 |
Single ended line probing in DSL system |
Dec. 23, 2003 |
| 6618469 |
Circuits and methods for testing POTS service |
Sep. 9, 2003 |
| 6614882 |
Proact module for proactive maintenance application |
Sep. 2, 2003 |
| 6584176 |
Loop loss measurement and reporting mechanism for digital data services telephone channel equipment |
Jun. 24, 2003 |
| 6574310 |
Apparatus and method for a wide band spectral balance measurement |
Jun. 3, 2003 |
| 6516049 |
Method and apparatus for insertion loss estimation in wireline communications |
Feb. 4, 2003 |
| 6504927 |
Mechanism for measuring resistance of telephone subscriber line and generating measurement as pulse width of periodic waveform |
Jan. 7, 2003 |
| 6472992 |
Alarm filter circuit |
Oct. 29, 2002 |
| 6466647 |
System and method for estimating the capacity of a local loop to carry data |
Oct. 15, 2002 |
| 6456694 |
Method for prequalifying subscriber lines for high speed data service |
Sep. 24, 2002 |
| 6434232 |
Apparatus and method for measuring loop impedance |
Aug. 13, 2002 |
| 6411680 |
Telephonic apparatus and input device for telephonic apparatus |
Jun. 25, 2002 |
| 6404347 |
Alarm filter circuit |
Jun. 11, 2002 |
| 6393102 |
Computer-executable method for diagnosing trouble causes in telephone cable segments when trouble data are available only for entire cables |
May. 21, 2002 |
| 6389110 |
Telecom service identification resonator apparatus and technique |
May. 14, 2002 |
| 6389109 |
Fault conditions affecting high speed data services |
May. 14, 2002 |
| 6385297 |
Method and apparatus for qualifying loops for data services |
May. 7, 2002 |
| 6301337 |
Combined handset and POTS filter |
Oct. 9, 2001 |
| 6292540 |
Battery injection and loop supervision for DSL environment |
Sep. 18, 2001 |
| 6285744 |
Telephony test system with adjustable output impedance |
Sep. 4, 2001 |
| 6266395 |
Single-ended subscriber loop qualification for xDSL service |
Jul. 24, 2001 |
|
|
|
