1
John P Riganati, Visvaldis A Vitols: Automatic pattern processing system. Rockwell International Corporation, L Lee Humphries, H Fredrick Hamann, Rolf M Pitts, April 24, 1979: US04151512 (190 worldwide citation)

An automatic system is described wherein pattern representations of epidermal ridges, such as fingerprints, are uniquely described by the extraction of specific information. Specific information such as ridge contour data, describing the ridge flow in the fingerprint pattern and minutiae data, princ ...


2
Tien Lin Chang, Jimmy H Kabaian, John P Riganati, Stanley A White: Non-fingerprint region indicator. Rockwell International Corporation, L Lee Humphries, H Fredrick Hamann, Rolf M Pitts, September 30, 1980: US04225850 (102 worldwide citation)

Signalling means for enhancing the performance of automatic fingerprint identification systems by reducing system response to non-fingerprint-like regions within an image field pattern of interest. A two dimensional generalized sequency analyzer, such as a fast Fourier transform machine, responsive ...


3
John P Riganati, Visvaldis A Vitols: Minutiae pattern matcher. Rockwell International Corporation, L Lee Humphries, H Fredrick Hamann, Rolf M Pitts, January 16, 1979: US04135147 (83 worldwide citation)

A system which, in one exemplary embodiment, comprises first means responsive to minutiae of first and second fingerprints for selectively generating a plurality of neighborhood comparison signals indicative of the closeness of match and coordinate displacements between minutiae neighborhoods of the ...


4
John P Riganati, Visvaldis A Vitols: Two-dimensional binary data enhancement system. Rockwell International Corporation, H Fredrick Hamann, Rolf M Pitts, George Jameson, January 11, 1977: US04003024 (72 worldwide citation)

A system for enhancing a binary data bit stream derived from a two-dimensional pattern image wherein, in a preferred embodiment, each data bit in the bit stream and a preselected group of bits associated therewith are sequentially stored in a first location and in associated preselected locations, r ...


5
Maya B Gokhale, Janice M Stone, John P Riganati: Method for determining an optimal partitioning of data among several memories. Sarnoff Corporation, William J Burke, June 29, 2004: US06757892 (72 worldwide citation)

A method and system for optimizing variable locations within disparate storage elements in a target processing environment according to a least cost analysis based upon the number of times a variable is accessed by one or more program loops forming a program.


6
Visvaldis A Vitols, John P Riganati: Operator interactive pattern processing system. Rockwell International Corporation, H Fredrick Hamann, Harry John Staas, September 6, 1977: US04047154 (53 worldwide citation)

An operator interactive pattern processing system is described which combines high speed recognition and processing abilities of an automatic portion with the estimating and recognition abilities of a human operator to extract correct data from patterns, such as poor quality unidentified latent fing ...


7
John P Riganati, Richard D Capello, Gerald D Brown, Norman L Bolton, Alexander Csiszer: Method and apparatus for automatic extraction of fingerprint cores and tri-radii. Rockwell International Corporation, L Lee Humphries, H Fredrick Hamann, Rolf M Pitts, May 22, 1979: US04156230 (46 worldwide citation)

A method and apparatus for the smoothing and singularity detection of the ridge contour data of a fingerprint image for classification in an automatic fingerprint identification system. A template scanning window is passed electronically over a digital matrix of ridge contour data to generate a set ...


8
John P Riganati, Visvaldis A Vitols: Binary image minutiae detector. Rockwell International Corporation, H Fredrick Hamann, Rolf M Pitts, George Jameson, April 4, 1978: US04083035 (31 worldwide citation)

An apparatus is described for detecting minutiae in a two-dimensional binary image. In a preferred embodiment a two-dimensional binary data bit stream of an image is enhanced in an enhancement circuit by pore-fill and line-thin operations. The enhanced binary data bit stream is then applied in paral ...


9
Steven Alan Lipp, Joseph H Abeles, Alan Michael Braun, Sterling Eduard McBride, John P Riganati, Ralph Doud Whaley Jr, Peter J Zanzucchi: Anodically bonded cell, method for making same and systems incorporating same. Sarnoff Corporation, Lowenstein Sandler PC, July 15, 2008: US07400207 (7 worldwide citation)

A cell suitable for use with an atomic clock and a method for making the same, the cell including: a silicon wafer having a recess formed therein; at least one amorphous silicate member having an ion mobility and temperature expansion coefficient approximately that of silicon sealing the recess; and ...


10
Steven Alan Lipp, Joseph H Abeles, Alan Michael Braun, Sterling Eduard McBride, John P Riganati, Ralph Doud Whaley, Peter J Zanzucchi: Anodically Bonded Cell, Method for Making Same and Systems Incorporating Same. Sarnoff Corporation, Patent Docket Administrator, Lowenstein Sandler PC, September 11, 2008: US20080218281-A1

A cell suitable for use with an atomic clock and a method for making the same, the cell including: a silicon wafer having a recess formed therein; at least one amorphous silicate member having an ion mobility and temperature expansion coefficient approximately that of silicon sealing the recess; and ...