Telephonic communications – Special services – Three-way calling
Reexamination Certificate
2007-07-24
2010-11-02
Hong, Harry S (Department: 2614)
Telephonic communications
Special services
Three-way calling
C375S130000, C375S146000, C375S147000, C379S189000, C379S202010, C379S210020
Reexamination Certificate
active
07826604
ABSTRACT:
Three-way call detection is an important component of correctional facility telephone equipment because it helps restrict calling access by certain persons to certain restricted telephone numbers. Various three-way call detection methods exist, but all of these implementations suffer from one major limitation—the detection accuracy is not as high as is desired by the industry. The present invention improves detection accuracy, using “steganography.” Steganography involves hiding one set of data or signals within another signal or carrier in such a way that its presence is virtually imperceptible to the end recipient, and potential even the originator of the carrier signal. Television producers use steganographic methods to encode data in video signals for security, distribution monitoring, piracy-control, and other reasons. The present invention involves a device that connects to a telephone, either at the line or handset interfaces, and produces a known signal that is steganographically hidden within the user's normal voice signal. Detection equipment, residing at another location, monitors signals on telephone calls and tests for the presence of the hidden signal or data generated by the invention. Once detection is achieved, appropriate action, such as terminating or recording the call, may be taken. Improved accuracy is achieved by choosing the appropriate hidden signal(s)—ones that never occur in the course of normal conversation and never get generated by telephone company equipment. Once detected, the presence of the signal guarantees the call was made to the restricted party from a particular phone line.
REFERENCES:
patent: 4670628 (1987-06-01), Boratgis et al.
patent: 4691347 (1987-09-01), Stanley et al.
patent: 4737982 (1988-04-01), Boratgis et al.
patent: 4813070 (1989-03-01), Humphreys et al.
patent: 4907221 (1990-03-01), Pariani et al.
patent: 4918719 (1990-04-01), Daudelin
patent: 4943973 (1990-07-01), Werner
patent: 4995030 (1991-02-01), Helf
patent: 5291548 (1994-03-01), Tsumura et al.
patent: 5319702 (1994-06-01), Kitchin et al.
patent: 5319735 (1994-06-01), Preuss et al.
patent: 5345595 (1994-09-01), Johnson et al.
patent: 5379345 (1995-01-01), Greenberg
patent: 5425091 (1995-06-01), Josephs
patent: 5438616 (1995-08-01), Peoples
patent: 5502762 (1996-03-01), Andrew et al.
patent: 5535194 (1996-07-01), Ashley et al.
patent: 5535261 (1996-07-01), Brown et al.
patent: 5539731 (1996-07-01), Haneda et al.
patent: 5539812 (1996-07-01), Kitchin et al.
patent: 5555551 (1996-09-01), Rudokas et al.
patent: 5590171 (1996-12-01), Howe
patent: 5592548 (1997-01-01), Sih
patent: 5613004 (1997-03-01), Cooperman
patent: 5636292 (1997-06-01), Rhoads
patent: 5646940 (1997-07-01), Hotto
patent: 5687236 (1997-11-01), Moskowitz
patent: 5710834 (1998-01-01), Rhoads
patent: 5719937 (1998-02-01), Warren et al.
patent: 5745558 (1998-04-01), Richardson, Jr. et al.
patent: 5745569 (1998-04-01), Moskowitz
patent: 5745604 (1998-04-01), Rhoads
patent: 5748726 (1998-05-01), Unno
patent: 5748763 (1998-05-01), Rhoads
patent: 5748783 (1998-05-01), Rhoads
patent: 5757889 (1998-05-01), Ohtake
patent: 5768426 (1998-06-01), Rhoads
patent: 5774452 (1998-06-01), Wolosewicz
patent: 5796811 (1998-08-01), McFarlen
patent: 5805685 (1998-09-01), McFarlen
patent: 5822432 (1998-10-01), Moskowitz
patent: 5822436 (1998-10-01), Rhoads
patent: 5832119 (1998-11-01), Rhoads
patent: 5835486 (1998-11-01), Davis et al.
patent: 5841886 (1998-11-01), Rhoads
patent: 5841978 (1998-11-01), Rhoads
patent: 5850481 (1998-12-01), Rhoads
patent: 5862260 (1999-01-01), Rhoads
patent: 5867562 (1999-02-01), Scherer
patent: 5883945 (1999-03-01), Richardson, Jr. et al.
patent: 5889868 (1999-03-01), Moskowitz et al.
patent: 5907602 (1999-05-01), Peel et al.
patent: 5920834 (1999-07-01), Sih et al.
patent: 5926533 (1999-07-01), Gainsboro
patent: 5930369 (1999-07-01), Cox et al.
patent: 5930377 (1999-07-01), Powell et al.
patent: 5963909 (1999-10-01), Warren et al.
patent: 5982891 (1999-11-01), Ginter et al.
patent: 5999828 (1999-12-01), Sih et al.
patent: 6011849 (2000-01-01), Orrin
patent: 6026193 (2000-02-01), Rhoads
patent: 6035034 (2000-03-01), Trump
patent: 6052462 (2000-04-01), Lu
patent: 6072860 (2000-06-01), Kek et al.
patent: 6078567 (2000-06-01), Traill et al.
patent: 6078645 (2000-06-01), Cai et al.
patent: 6111954 (2000-08-01), Rhoads
patent: 6122392 (2000-09-01), Rhoads
patent: 6122403 (2000-09-01), Rhoads
patent: 6138119 (2000-10-01), Hall et al.
patent: 6141406 (2000-10-01), Johnson
patent: 6185416 (2001-02-01), Rudokas et al.
patent: 6185683 (2001-02-01), Ginter
patent: 6205249 (2001-03-01), Moskowitz et al.
patent: 6233347 (2001-05-01), Chen
patent: 6237786 (2001-05-01), Ginter et al.
patent: 6243480 (2001-06-01), Zhao et al.
patent: 6253193 (2001-06-01), Ginter et al.
patent: 6266430 (2001-07-01), Rhoads
patent: 6278781 (2001-08-01), Rhoads
patent: 6289108 (2001-09-01), Rhoads
patent: 6301360 (2001-10-01), Bocionek et al.
patent: 6312911 (2001-11-01), Bancroft
patent: 6314192 (2001-11-01), Chen et al.
patent: 6324573 (2001-11-01), Rhoads
patent: 6324650 (2001-11-01), Ogilvie
patent: 6330335 (2001-12-01), Rhoads
patent: 6343138 (2002-01-01), Rhoads
patent: 6343738 (2002-02-01), Ogilvie
patent: 6763099 (2004-07-01), Blink
patent: 7248685 (2007-07-01), Martin
patent: 7277468 (2007-10-01), Tian et al.
patent: 2003/0040326 (2003-02-01), Levy
patent: 2 075 313 (1981-11-01), None
patent: 59225626 (1984-12-01), None
patent: 60010821 (1985-01-01), None
patent: 61135239 (1986-06-01), None
patent: 3065826 (1991-03-01), None
patent: PCT/US9514230 (1996-05-01), None
Coherent Announces Industry's First Remote Management System for Echo Cancellers, Business Wire, Mar. 3, 1997.
Frankel, Elana; Audioconferencing options. (Teleconference Units, Conference Bridges and Service Bureaus) (includes related articles on speech processing and new conferencing technology); Teleconnect, v 14, n.5., p131(3), May 1996.
Silberg, Lurie; Digital on Call, HFN The Weekly Newspaper for the Home Furnishing Network, p. 97, Mar. 17, 1997.
Qwest; Inmate Telephone Services: Large Business: Voice; Oct. 2, 2001.
Boney, Laurence, et al.; Digital Watermarks for Audio Signals; Proceedings of the International Conference on Multimedia Computing Systems; 1996; p. 473-480.
Boney, Laurence, et al.; Digital Watermarks for Audio Signals; Proceedings of EUSIPCO-96, Eighth European Signal processing Conference, Trieste, Italy, Sep. 10-13, 1996.
Bender, W., et al.; Techniques for Data Hiding; IBM Systems Journal, vol. 35, Nos. 3&4, 1996.
International Search Report for PCT/US2004/025029 filed Aug. 4, 2004, dated Mar. 14, 2006.
Supplemental European Search Report for EP 04809530.1, corresponding to PCT/US2004/025029, filed Aug. 4, 2004, dated Apr. 2, 2009.
Newton's Telecom Dictionary, 18th Edition, Feb. 2002, p. 168, section “coding theory”.
DSI-ITI, LLC
Hong Harry S
Wiley & Rein LLP
LandOfFree
Three-way call detection using steganography does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-way call detection using steganography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-way call detection using steganography will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4182920