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Ricardo L. de Queiroz
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Pittsford, NY, US
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Patents Grants
last 30 patents
Information
Patent Grant
System for authentication of JPEG image data
Patent number
7,627,761
Issue date
Dec 1, 2009
Xerox Corporation
Ricardo L de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System and method for authentication of JPEG image data
Patent number
7,493,489
Issue date
Feb 17, 2009
Xerox Corporation
Ricardo L de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System and method for authentication of JPEG image data
Patent number
7,360,093
Issue date
Apr 15, 2008
Xerox Corporation
Ricardo L de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for authentication of JPEG image data
Patent number
7,313,696
Issue date
Dec 25, 2007
Xerox Corporation
Ricardo L de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Maximum likelihood estimation of JPEG quantization values
Patent number
7,187,805
Issue date
Mar 6, 2007
Xerox Corporation
Zhigang Fan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Gamut mapping preserving local luminance differences with adaptive...
Patent number
6,954,287
Issue date
Oct 11, 2005
Xerox Corporation
Thyagarajan Balasubramanian
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Resolution enhancement of compressed image data
Patent number
6,795,211
Issue date
Sep 21, 2004
Xerox Corporation
Reiner Eschbach
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for decompressing JPEG files using a variable block size inv...
Patent number
6,778,707
Issue date
Aug 17, 2004
Xerox Corporation
Ricardo L. de Queiroz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fast preview of CCITT-compressed documents
Patent number
6,778,301
Issue date
Aug 17, 2004
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Halftone detection in the wavelet domain
Patent number
6,738,524
Issue date
May 18, 2004
Xerox Corporation
Ricardo L. de Queiroz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Principal axis look-up for color correction
Patent number
6,707,938
Issue date
Mar 16, 2004
Xerox Corporation
Ricardo L. de Queiroz
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
HVQ-based filtering method
Patent number
6,683,994
Issue date
Jan 27, 2004
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Gamut mapping preserving local luminance differences
Patent number
6,646,762
Issue date
Nov 11, 2003
Xerox Corporation
Thyagarajan Balasubramanian
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of compressing JPEG files using a conditional transform
Patent number
6,611,626
Issue date
Aug 26, 2003
Xerox Corporation
Ricardo L. de Queiroz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for analyzing image data to use multiple trans...
Patent number
6,563,955
Issue date
May 13, 2003
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Blocking signature detection for identification of JPEG images
Patent number
6,385,342
Issue date
May 7, 2002
Xerox Corporation
Ricardo L. de Queiroz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Compression framework incorporating decoding commands
Patent number
6,377,706
Issue date
Apr 23, 2002
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for segmenting data to create mixed raster con...
Patent number
6,373,981
Issue date
Apr 16, 2002
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Iterative smoothing technique for pre-processing mixed raster conte...
Patent number
6,334,001
Issue date
Dec 25, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for pre-processing mixed raster content planes...
Patent number
6,275,620
Issue date
Aug 14, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Fully automatic pasting of images into compressed pre-collated docu...
Patent number
6,272,251
Issue date
Aug 7, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for pre-processing mixed raster content planes...
Patent number
6,272,255
Issue date
Aug 7, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Blocking signature detection for identification of JPEG images
Patent number
6,256,416
Issue date
Jul 3, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for simulating JPEG compression
Patent number
6,256,421
Issue date
Jul 3, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Blocking signature detection for identification JPEG images
Patent number
6,219,450
Issue date
Apr 17, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Blocking signature detection for identification of JPEG images
Patent number
6,195,457
Issue date
Feb 27, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Multi resolution color correction using wavelet transforms
Patent number
6,195,456
Issue date
Feb 27, 2001
Xerox Corporation
Thyagarajan Balasubramanian
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Fast decompression and rotation for devices with asymmetric resolution
Patent number
6,175,653
Issue date
Jan 16, 2001
Xerox Corporation
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of compressing JPEG files
Patent number
6,167,153
Issue date
Dec 26, 2000
Xerox Corporation
Ricardo L. de Queiroz
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Color correction of a compressed image
Patent number
6,097,838
Issue date
Aug 1, 2000
Xerox Corporation
R. Victor Klassen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Method for authentication of JPEG image data
Publication number
20040013268
Publication date
Jan 22, 2004
Xerox Corporation.
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
System and method for authentication of JPEG image data
Publication number
20040015697
Publication date
Jan 22, 2004
Xerox Corporation.
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
System and method for authentication of JPEG image data
Publication number
20040015695
Publication date
Jan 22, 2004
Xerox Corporation.
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
System and method for authentication of JPEG image data
Publication number
20040015696
Publication date
Jan 22, 2004
Xerox Corporation.
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Fast preview of CCITT-compressed documents
Publication number
20020101606
Publication date
Aug 1, 2002
Xerox Corporation.
Ricardo L. de Queiroz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
MERTHOD AND APPARATUS FOR ANALZING IMAGE DATA TO USE MULTIPLE TRANS...
Publication number
20010041017
Publication date
Nov 15, 2001
RICARDO DE QUEIROZ
G06 - COMPUTING CALCULATING COUNTING