Source: http://www.google.com/patents/US7826545?dq=5,371,548
Timestamp: 2015-01-27 20:08:14
Document Index: 551015494

Matched Legal Cases: ['Application No. 05027153', 'Application No. 2006203214', 'Application No. 2006203214', 'Application No. 10', 'Application No. 2007', 'Application No. 2', 'Application No. 2', 'Application No. 02734665', 'Application No. 08001578']

Patent US7826545 - Variable state length initialization - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThrough the use of a variable state length initialization, both the transmitter and the receiver can have control of the length of one or more initialization states. For example, a transmitter can send information, such as a message, to the receiver at the commencement of, during initialization or prior...http://www.google.com/patents/US7826545?utm_source=gb-gplus-sharePatent US7826545 - Variable state length initializationAdvanced Patent SearchPublication numberUS7826545 B2Publication typeGrantApplication numberUS 11/828,134Publication dateNov 2, 2010Filing dateJul 25, 2007Priority dateJun 7, 2001Fee statusPaidAlso published asCA2416302A1, CA2416302C, CA2559482A1, CA2559482C, DE60208022D1, DE60208022T2, DE60224892D1, DE60224892T2, EP1393541A1, EP1393541B1, EP1641174A2, EP1641174A3, EP1641174B1, EP1912375A2, EP1912375A3, EP1912375B1, US6647068, US7272171, US8208520, US20020186704, US20040022305, US20070263706, US20110032975, WO2002102043A1Publication number11828134, 828134, US 7826545 B2, US 7826545B2, US-B2-7826545, US7826545 B2, US7826545B2InventorsMarcos C. TzannesOriginal AssigneeTzannes Marcos CExport CitationBiBTeX, EndNote, RefManPatent Citations (43), Non-Patent Citations (24), Classifications (18), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetVariable state length initializationUS 7826545 B2Abstract Through the use of a variable state length initialization, both the transmitter and the receiver can have control of the length of one or more initialization states. For example, a transmitter can send information, such as a message, to the receiver at the commencement of, during initialization or prior to entering a variable length initialization state. The information can specify, for example, a minimum length of an initialization state as needed by the transmitter.
RELATED APPLICATION DATA This application is a continuation of prior U.S. application Ser. No. 10/630,673 filed Jul. 31, 2003 now patented as U.S. Pat. No. 7,272,171, which itself is a divisional of prior U.S. application Ser. No. 10/163,692 filed Jun. 7, 2002 now patented as U.S. Pat. No. 6,647,068, which itself claims the benefit of and priority under 35 U.S.C. �119(e) to U.S. Patent Application Ser. No. 60/296,697, filed Jun. 7, 2001, entitled �Variable State Length Initialization,� which is incorporated herein by reference in its entirety.
SUMMARY OF THE INVENTION DSL (Digital Subscriber Line) modems use variable length initialization states for ADSL communications. The ITU ADSL Standards G.992.1 and G.992.2, incorporated herein by reference in their entirety, specify operation of conventional ADSL systems. For example, in �Multi-Company Proposal for Initialization,� incorporated herein by reference in its entirety, the C-REVERB1 initialization state and the R-REVERB3 initialization state have a variable length. The length of a state is defined as the number of DMT symbols transmitted in that state where DMT symbols are also known as multicarrier symbols. The length of C-REVERB1 is controlled by the ATU-R (ATU-R�ADSL Transceiver Unit-Remote) and the length of R-REVERB3 is controlled by the ATU-C (ADSL Transceiver Unit-Central Office). In this example, the ATU-C transmitter continues to sends C-REVERB1 until the ATU-C receiver detects R-REVERB2 sent from the ATU-R. Likewise, the ATU-R transmitter continues to send R-REVERB3 until the ATU-R receiver detects C-REVERB2 sent from the ATU-C transmitter. For example, when the ATU-C receiver has received the R-REVERB3 signal for a sufficient amount of time, the ATU-C transmitter sends the C-REVERB2 signal to the ATU-R which once detected by the ATU-R receiver causes the ATU-R transmitter to exit the R-REVERB3 state. Likewise, when the ATU-R receiver has received the C-REVERB1 signal for a sufficient amount of time, the ATU-R transmitter sends the R-REVERB2 signal to the ATU-C which once detected by the ATU-C receiver causes the ATU-C transmitter to exit the R-REVERB3 state.
Using the above example, based on the C-REVERB1 state, prior to entering or during the C-REVERB1 state, the ATU-C would send a message to the ATU-R indicating the minimum length of the state �MinState.� For example, the ATU-C could indicate that MinState equals 1000 DMT symbols for C-REVERB1. In this case, the ATU-R would wait at least 1000 DMT symbols before the ATU-R transmitter would send R-REVERB2 to the ATU-C, and thus terminating the C-REVERB1 state.
DETAILED DESCRIPTION OF THE INVENTION FIG. 1 illustrates an exemplary communication system 10. In particular, the communication system 10 comprises a first transceiver 100 and a second transceiver 200, connected by link 5. The transceiver 100 comprises a state length determination module 110, a state length verification module 120, a memory 130 and a message module 140. The transceiver 200 comprises a state length determination module 210, a state length verification module 220, a memory 230 and a message module 240.
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No. 10/630,673.21Official Action for Canadian Patent Application No. 2,416,302, mailed Aug. 30, 2004.22Official Action for Canadian Patent Application No. 2,416,302, mailed Jun. 6, 2005.23Official Action for European Patent Application No. 02734665, mailed Feb. 11, 2005.24Search Report and Opinion for European Patent Application No. 08001578.7, mailed Apr. 21, 2008.Classifications U.S. Classification375/260International ClassificationH04J1/00, H04M11/06, H04J11/00, H04L29/06, H04K1/10Cooperative ClassificationH04L27/2601, H04L29/06, H04L5/0053, H04L5/1438, H04M11/062, H04L27/2608, H04L69/24European ClassificationH04M11/06B, H04L27/26M1P, H04L29/06, H04L27/26M, H04L5/14RLegal EventsDateCodeEventDescriptionApr 24, 2014FPAYFee paymentYear of fee payment: 4Jan 25, 2013ASAssignmentOwner name: INTELLECTUAL VENTURES II LLC, DELAWAREFree format text: MERGER;ASSIGNOR:DAPHIMO CO. B.V., LLC;REEL/FRAME:029697/0829Effective date: 20130124Sep 1, 2011ASAssignmentOwner name: AWARE, INC., MASSACHUSETTSEffective date: 20081215Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TZANNES, MARCOS C.;REEL/FRAME:026847/0041Feb 16, 2009ASAssignmentOwner name: DAPHIMO CO. B.V., LLC, DELAWAREFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AWARE, INC.;REEL/FRAME:022259/0569Effective date: 20081219RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services