Method and apparatus for fast V.90 modem startup

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C379S093310, C375S222000

Reexamination Certificate

active

11205896

ABSTRACT:
A fast startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the fast connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a fast initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.

REFERENCES:
patent: 4578796 (1986-03-01), Charalambous et al.
patent: 4621366 (1986-11-01), Cain et al.
patent: 4852151 (1989-07-01), Dittakavi et al.
patent: 4894847 (1990-01-01), Tjahjadi et al.
patent: 4995074 (1991-02-01), Goldman et al.
patent: 5127051 (1992-06-01), Chan et al.
patent: 5131025 (1992-07-01), Hamasaki
patent: 5287401 (1994-02-01), Lin
patent: 5317594 (1994-05-01), Goldstein
patent: 5353280 (1994-10-01), Ungerbock
patent: 5367563 (1994-11-01), Sainton
patent: 5513251 (1996-04-01), Rochkind et al.
patent: 5519767 (1996-05-01), O'Horo et al.
patent: 5550908 (1996-08-01), Cai et al.
patent: 5600712 (1997-02-01), Hanson et al.
patent: 5606599 (1997-02-01), O'Mahony et al.
patent: 5651060 (1997-07-01), Cohn et al.
patent: 5668861 (1997-09-01), Watts
patent: 5684825 (1997-11-01), Ko
patent: 5729594 (1998-03-01), Klingman
patent: 5757890 (1998-05-01), Venkatakrishnan
patent: 5764278 (1998-06-01), Nagao
patent: 5764736 (1998-06-01), Shachar et al.
patent: 5796808 (1998-08-01), Scott et al.
patent: 5802153 (1998-09-01), Sridhar et al.
patent: 5862474 (1999-01-01), Kimball
patent: 5896444 (1999-04-01), Perlman et al.
patent: 5903602 (1999-05-01), Torkkel
patent: 5940489 (1999-08-01), Cohn et al.
patent: 6104800 (2000-08-01), Benson
patent: 6314170 (2001-11-01), Noguchi et al.
patent: 6345071 (2002-02-01), Hamdi
patent: 6426946 (2002-07-01), Takagi et al.
patent: 6430219 (2002-08-01), Zuranski et al.
patent: 6574239 (2003-06-01), Dowling et al.
patent: 0 409 641 (1991-01-01), None
patent: 0 409 641 (1991-01-01), None
patent: 0 601 260 (1994-06-01), None
patent: 0 711 060 (1996-05-01), None
patent: 0 409 641 (1996-06-01), None
patent: 0 741 481 (1996-11-01), None
patent: 0 812 096 (1997-12-01), None
patent: 0 812 096 (1999-12-01), None
patent: 2 771 577 (1999-05-01), None
patent: WO96/05684 (1996-02-01), None
patent: WO 97/49228 (1997-12-01), None
patent: WO97/49228 (1997-12-01), None
patent: WO99/27702 (1999-06-01), None
patent: WO99/27702 (1999-06-01), None
patent: WO99/31813 (1999-06-01), None
patent: WO99/48304 (1999-09-01), None
“V.90” Sep. 1998, ITU-T Telecommunication Standardization Sector of ITU, the whole document.
MULTITECH “V.92 Q&A”, Internet, Online, Sep. 5, 2000, Retrieved from the Internet: <URL: HTTP://WWW.MULTICH.COM/APPLICATIONS/DATA—FAX/V92.ASP>.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for fast V.90 modem startup does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for fast V.90 modem startup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for fast V.90 modem startup will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3903060

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.