Cryptography – Video cryptography – Video electric signal masking
Reexamination Certificate
2005-09-13
2005-09-13
Caldwell, Andrew (Department: 2137)
Cryptography
Video cryptography
Video electric signal masking
C380S242000, C713S176000, C705S057000, C714S786000, C714S794000, C714S795000, C725S031000, C382S100000, C382S232000
Reexamination Certificate
active
06944298
ABSTRACT:
One aspect of the invention is a method of decoding an auxiliary code embedded in an audio signal. The method performs a statistical decoding of a multibit auxiliary code embedded in an audio signal. The auxiliary code has been repetitively embedded in the audio signal. The method decodes code values of the auxiliary code from two or more different portions of the audio signal, each having the multibit auxiliary code. It then uses the code values decoded from two or more different portions to determine statistically the code values of the auxiliary code. Another aspect of the invention is another method of decoding an auxiliary code embedded in an audio signal. The method receives an audio signal suspected of being embedded with an auxiliary code. It evaluates a statistical feature of a portion of the audio signal to decode code values of the auxiliary code from the audio signal. It then determines a code value in the auxiliary code based on the statistical feature. The statistical feature may comprise, for example, the power of the audio signal. The statistical feature may be analyzed over different portions of the audio signal to decode two or more values of the auxiliary code.
REFERENCES:
patent: 2630525 (1953-03-01), Tomberlin et al.
patent: 3004104 (1961-10-01), Hembrooke
patent: 3406344 (1968-10-01), Hopper
patent: 3845391 (1974-10-01), Crosby
patent: 3885217 (1975-05-01), Cintron
patent: 3894190 (1975-07-01), Gassmann
patent: 4025851 (1977-05-01), Haselwood et al.
patent: 4225967 (1980-09-01), Miwa et al.
patent: 4230990 (1980-10-01), Lert, Jr. et al.
patent: 4237484 (1980-12-01), Brown et al.
patent: 4238849 (1980-12-01), Gassmann
patent: 4245346 (1981-01-01), Grady et al.
patent: 4248528 (1981-02-01), Sahay
patent: 4297729 (1981-10-01), Steynor et al.
patent: 4313197 (1982-01-01), Maxemchuk
patent: 4333113 (1982-06-01), Kalinowski
patent: 4358857 (1982-11-01), Gleason et al.
patent: 4379947 (1983-04-01), Warner
patent: 4395600 (1983-07-01), Lundy et al.
patent: 4425642 (1984-01-01), Moses et al.
patent: 4425661 (1984-01-01), Moses et al.
patent: 4495620 (1985-01-01), Steele et al.
patent: 4512013 (1985-04-01), Nash et al.
patent: 4523311 (1985-06-01), Lee et al.
patent: 4528588 (1985-07-01), Lofberg
patent: 4593389 (1986-06-01), Wurzburg et al.
patent: 4703476 (1987-10-01), Howard
patent: 4718106 (1988-01-01), Weinblatt
patent: 4750173 (1988-06-01), Bluthgen
patent: 4775901 (1988-10-01), Nakano
patent: 4777529 (1988-10-01), Schultz et al.
patent: 4807031 (1989-02-01), Broughton et al.
patent: 4811357 (1989-03-01), Betts et al.
patent: 4855827 (1989-08-01), Best
patent: 4866771 (1989-09-01), Bain
patent: 4876617 (1989-10-01), Best et al.
patent: 4920503 (1990-04-01), Cook
patent: 4921278 (1990-05-01), Shiang et al.
patent: 4939515 (1990-07-01), Adelson
patent: 4943973 (1990-07-01), Werner
patent: 4945412 (1990-07-01), Kramer
patent: 4963998 (1990-10-01), Maufe
patent: 4969041 (1990-11-01), O'Grady et al.
patent: 4972471 (1990-11-01), Gross et al.
patent: 4979210 (1990-12-01), Nagata et al.
patent: 5010405 (1991-04-01), Schreiber et al.
patent: 5073899 (1991-12-01), Collier et al.
patent: 5079648 (1992-01-01), Maufe
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5134496 (1992-07-01), Schwab et al.
patent: 5146457 (1992-09-01), Veldhuis et al.
patent: 5161210 (1992-11-01), Druyvesteyn et al.
patent: 5200822 (1993-04-01), Bronfin et al.
patent: 5212551 (1993-05-01), Conanan
patent: 5213337 (1993-05-01), Sherman
patent: 5243411 (1993-09-01), Shirochi et al.
patent: 5243423 (1993-09-01), DeJean et al.
patent: 5257119 (1993-10-01), Funada et al.
patent: 5315098 (1994-05-01), Tow
patent: 5319453 (1994-06-01), Copriviza
patent: 5319735 (1994-06-01), Preuss et al.
patent: 5327237 (1994-07-01), Gerdes et al.
patent: 5379345 (1995-01-01), Greenberg
patent: 5387941 (1995-02-01), Montgomery et al.
patent: 5390185 (1995-02-01), Hooijmans et al.
patent: 5394274 (1995-02-01), Kahn
patent: 5404160 (1995-04-01), Schober et al.
patent: 5404377 (1995-04-01), Moses
patent: 5418853 (1995-05-01), Kanota et al.
patent: 5425100 (1995-06-01), Thomas et al.
patent: 5432542 (1995-07-01), Thibadeau et al.
patent: 5436653 (1995-07-01), Ellis et al.
patent: 5444779 (1995-08-01), Daniele
patent: 5450122 (1995-09-01), Keene
patent: 5450490 (1995-09-01), Jensen et al.
patent: 5452371 (1995-09-01), Bozinovic et al.
patent: 5453968 (1995-09-01), Veldhuis et al.
patent: 5473631 (1995-12-01), Moses
patent: 5479168 (1995-12-01), Johnson et al.
patent: 5481294 (1996-01-01), Thomas et al.
patent: 5510900 (1996-04-01), Shirochi et al.
patent: 5530655 (1996-06-01), Lokhoff et al.
patent: 5530751 (1996-06-01), Morris
patent: 5530759 (1996-06-01), Braudaway et al.
patent: 5537216 (1996-07-01), Yamashita et al.
patent: 5539471 (1996-07-01), Myhrvold et al.
patent: 5541662 (1996-07-01), Adams et al.
patent: 5559559 (1996-09-01), Jungo et al.
patent: 5572247 (1996-11-01), Montgomery et al.
patent: 5579124 (1996-11-01), Aijala et al.
patent: 5581800 (1996-12-01), Fardeau et al.
patent: 5612943 (1997-03-01), Moses et al.
patent: 5613004 (1997-03-01), Cooperman et al.
patent: 5627655 (1997-05-01), Okamoto et al.
patent: 5629980 (1997-05-01), Stefik et al.
patent: 5636292 (1997-06-01), Rhoads
patent: 5642397 (1997-06-01), Agbaje-Anozie
patent: 5646997 (1997-07-01), Barton
patent: 5649054 (1997-07-01), Oomen et al.
patent: 5652626 (1997-07-01), Kawakami et al.
patent: 5659726 (1997-08-01), Sandford et al.
patent: 5663766 (1997-09-01), Sizer, II
patent: 5671277 (1997-09-01), Ikenoue et al.
patent: 5712920 (1998-01-01), Spille
patent: 5719984 (1998-02-01), Yamagata et al.
patent: 5721788 (1998-02-01), Powell et al.
patent: 5727092 (1998-03-01), Sandford et al.
patent: 5737025 (1998-04-01), Dougherty et al.
patent: 5739864 (1998-04-01), Copeland
patent: 5748763 (1998-05-01), Rhoads
patent: 5764763 (1998-06-01), Jensen et al.
patent: 5768426 (1998-06-01), Rhoads
patent: 5774452 (1998-06-01), Wolosewicz
patent: 5832119 (1998-11-01), Rhoads
patent: 5850481 (1998-12-01), Rhoads
patent: 5857038 (1999-01-01), Owada et al.
patent: 5907443 (1999-05-01), Hirata
patent: 5960081 (1999-09-01), Vynne et al.
patent: 5960151 (1999-09-01), Takahashi
patent: 5987127 (1999-11-01), Ikenoue et al.
patent: 5991500 (1999-11-01), Kanota et al.
patent: 6003005 (1999-12-01), Hirschberg
patent: 6086706 (2000-07-01), Brassil et al.
patent: 6363159 (2002-03-01), Rhoads
patent: 6404898 (2002-06-01), Rhoads
patent: 6539095 (2003-03-01), Rhoads
patent: 6574349 (2003-06-01), Linnartz et al.
patent: 6628801 (2003-09-01), Powell et al.
patent: 6654480 (2003-11-01), Rhoads
patent: 2002/0090110 (2002-07-01), Braudaway et al.
patent: 2943436 (1981-05-01), None
patent: 3806411 (1989-09-01), None
patent: 0058482 (1982-08-01), None
patent: 0372601 (1990-06-01), None
patent: 0411232 (1991-02-01), None
patent: 0418964 (1991-03-01), None
patent: 0441702 (1991-08-01), None
patent: 0493091 (1992-07-01), None
patent: 0551016 (1993-07-01), None
patent: 0581317 (1994-02-01), None
patent: 0605208 (1994-07-01), None
patent: 0629972 (1994-12-01), None
patent: 0366381 (1995-03-01), None
patent: 0642060 (1995-03-01), None
patent: 0649074 (1995-04-01), None
patent: 0650146 (1995-04-01), None
patent: 0651554 (1995-05-01), None
patent: 0690595 (1996-02-01), None
patent: 0705025 (1996-04-01), None
patent: 0565947 (1997-05-01), None
patent: 2063018 (1981-05-01), None
patent: 2067871 (1981-07-01), None
patent: 2104701 (1983-03-01), None
patent: 2196167 (1988-04-01), None
patent: 2204984 (1988-11-01), None
patent: 4-248771 (1992-09-01), None
patent: 5-242217 (1993-09-01), None
patent: WO 89/08915 (1989-09-01), None
patent: WO 92/19073 (1992-10-01), None
patent: WO 93/25038 (1993-12-01), None
patent: WO 95/10835 (1995-04-01), None
patent: WO 95/20291 (1995-07-01), None
patent: WO 96/26494 (1996-08-01), None
patent: WO 96/27259 (1996-09-01), None
patent: WO 97/02522 (1997-01-01), None
Szepanski, Wolfram, “A Signal Theoretic Method for Creating Forgery-Proof Documents for Automatic Verification”, 1979 Carnahan Conference on Crime Countermeasures, May 16-18, 1979,
Caldwell Andrew
Callahan Paul E.
Digimare Corporation
Digimare Corporation
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