Patents

I have over 90 unique issued and over 25 pending patents.

Issued (unique, continuations merged)

  1. P. A. Chou, “Image recognition method using two-dimensional stochastic grammars,” US Patent 5,020,112 filed Oct 31, 1989, issued May 28, 1991.
  2. G. E. Kopec and P. A. Chou, “Image recognition using finite-state networks,” US Patent 5,321,773 filed Dec 10, 1991, issued June 14, 1994.
  3. G. E. Kopec, A. C. Kam, and P. A. Chou, “Document image decoding using modified branch-and-bound methods,” US Patent 5,526,444 filed May 7, 1993, issued June 11, 1996.
  4. V. Balasubramanian, F. R. Chen, P. A. Chou, D. G. Kimber, A. D. Poon, K. A. Weber, and L. D. Wilcox, “Real-time audio recording system for automatic speaker indexing,” US Patent 5,606,643 filed Apr 12, 1994, issued February 25, 1997.
  5. V. Balasubramanian, F. R. Chen, P. A. Chou, D. G. Kimber, A. D. Poon, K. A. Weber, and L. D. Wilcox, “Segmentation of audio data for indexing of conversational speech for real-time or postprocessing applications,” US Patent 5,655,058 filed Apr 12, 1994, issued August 5, 1997.
  6. M. Vishwanath and P. A. Chou, “Video image compression using weighted wavelet hierarchical vector quantization,” US Patent 5,602,589 filed Aug 19, 1994, issued February 11, 1997.
  7. G. E. Kopec, P. A. Chou, L. T. Niles, “Automatic training of character templates using a text line image source, a text line transcription, and a line image source model,” US Patent 5,594,809 filed Apr 28, 1995, issued January 14, 1997.
  8. D. Bloomberg, L. T. Niles, G. E. Kopec, and P. A. Chou, “Method for aligning a text image to a transcription of the image,” US Patent 5,689,585 filed Apr 28, 1995, issued November 18, 1997.
  9. G. E. Kopec, P. A. Chou, L. T. Niles, “Automatic training of character templates using a transcription and a two-dimensional image source model,” US Patent 5,689,620 filed Apr 28, 1995, issued November 18, 1997.
  10. G. E. Kopec and P. A. Chou, “Method of producing character templates using unsegmented samples,” US Patent 5,706,364 filed Apr 28, 1995, issued January 6, 1998.
  11. G. E. Kopec and P. A. Chou, “Unsupervised training of character templates using unsegmented samples,” US Patent 5,956,419 filed Apr 28, 1995, issued September 21, 1999.
  12. G. E. Kopec, P. A. Chou, and L. T. Niles, “Method and system for automatic transcription correction,” US Patent 5,883,986 filed Jun 2, 1995, issued March 16, 1999.
  13. A. E. Klemets and P. A. Chou, “Interleaved multiple media stream for synchronized transmission over a computer network,” US Patent 6,449,653 filed Mar 25, 1997, issued September 10, 2002.
  14. E. I. Levine and P. A. Chou, “Error correction and loss recovery of packets over a computer network,” US Patent 6,000,053 filed Jun 13, 1997, issued December 7, 1999.
  15. J. Hull, P. A. Chou, G. E. Kopec, and D. Arnon, “Automatic training of layout parameters in a 2D image model,” US Patent 6,687,404 filed Jun 20, 1997, issued February 3, 2004.
  16. M. Vishwanath, P. A. Chou, and N. Chaddha, “Method for transmitting data using an embedded bit stream produced in a hierarchical table-lookup vector quantizer,” US Patent 6,345,126 filed Jan 29, 1998, issued February 5, 2002; US Patent 6,671,416 filed Jul 30, 2001, issued December 30, 2003.
  17. P. A. Chou, “Multimedia presentation latency minimization,” US Patent 6,637,031 filed Dec 4, 1998, issued October 21, 2003; US Patent 7,424,730 filed Sep 10, 2003, issued September 9, 2008.
  18. P. A. Chou, S. Mehrotra, and A. Wang, “Apparatus and method for unequal error protection in multiple-description coding using overcomplete expansions,” US Patent 6,460,153 filed Mar 26, 1999, issued October 1, 2002.
  19. P. A. Chou, S. Mehrotra, and A. Wang, “Reconstruction of missing coefficients of overcomplete linear transforms using projections onto convex sets,” US Patent 6,470,469 filed Mar 26, 1999, issued October 22, 2002.
  20. P. A. Chou, A. Wang, and S. Mehrotra, “Receiver-driven layered error correction multicast over heterogeneous packet networks,” US Patent 6,532,562 filed May 21, 1999, issued March 11, 2003.
  21. P. A. Chou, A. Wang, S. Mehrotra, and A. E. Mohr, “Receiver-driven layered error correction multicast over heterogeneous packet networks,” US Patent 6,594,798 filed May 21, 1999, issued July 15, 2003.
  22. P. A. Chou, A. Wang, S. Mehrotra, and A. E. Mohr, “Receiver-driven layered error correction multicast over heterogeneous packet networks,” US Patent 6,996,097 filed May 21, 1999, issued February 7, 2006; US Patent 7,366,172 filed Jul 8, 2005, issued April 29, 2008; US Patent 7,697,514 filed Apr 18, 2005, issued April 13, 2010.
  23. P. A. Chou, “System and method for media streaming,” US Patent 6,778,533 filed Jan 24, 2000, issued August 17, 2004.
  24. V. N. Padmanabhan, J. Wang, and P. A. Chou, “System and Method for Distributing Streaming Content through Cooperative Networking,” US Patent 7,792,982 filed Jan 7, 2003, issued September 7, 2010.
  25. A. E. Klemets, R. Weiss, J. Ribas-Corbera, and P. A. Chou, “Streaming of variable bit rate multimedia content,” US Patent 7,391,717 filed Jun 30, 2003, issued June 24, 2008.
  26. D. Florencio, P. A. Chou, and L.-W. He, “System and method for providing high-quality stretching and compression of a digital audio signal,” US Patent 7,337,108 filed Sep 10, 2003, issued February 26, 2008.
  27. D. Florencio and P. A. Chou, “A system and method for real-time detection and preservation of speech onset in a signal,” US Patent 7,412,376 filed Sep 10, 2003, issued August 12, 2008.
  28. D. Florencio, L. He, and P. A. Chou, “A system and method for real-time jitter control and packet loss concealment in an audio signal,” US Patent 7,596,488 filed Sep 15, 2003, issued September 29, 2009.
  29. P. A. Chou and K. Jain, “System and method for broadcasting information over a network,” US Patent 7,349,440 filed Oct 15, 2003, issued March 25, 2008.
  30. P. A. Chou, Y. Wu, and K. Jain, “System and method for efficient broadcast of information over a network,” US Patent 7,408,938 filed Jan 5, 2004, issued August 5, 2008; US Patent 7,760,728 filed Aug 4, 2008, issued July 20, 2010.
  31. V. N. Padmanabhan, J. Wang, and P. A. Chou, “Method and systems for streaming data,” US Patent 7,400,577 filed Feb 25, 2004, issued July 15, 2008.
  32. P. A. Chou, V. N. Padmanabhan, and J. Wang, “Layered multiple description coding,” US Patent 7,222,285 filed Mar 17, 2004, issued May 22, 2007; US Patent 7,426,677 filed Apr 16, 2007, issued September 16, 2008.
  33. J. Li, C. Zhang, and P. A. Chou, “Efficient one-to-many content distribution in a peer-to-peer computer network,” US Patent 7,593,333 filed Jul 7, 2004, issued September 22, 2009.
  34. P. A. Chou, A. Klemets, and C. Huang, “System and process for controlling the coding bit rate of streaming media data employing a limited number of supported coding bit rates,” US Patent 7,536,469 filed Dec 10, 2004, issued May 19, 2009.
  35. P. A. Chou, A. Klemets, and C. Huang, “System and process for performing an exponentially weighted moving average on streaming data to establish a moving average bit rate,” US Patent 7,543,073 filed Dec 10, 2004, issued June 2, 2009.
  36. K. Jain, L. Lovasz, and P. A. Chou, “Scalable overlay network,” US Patent 7,529,198 filed Apr 7, 2005, issued May 5, 2009.
  37. A. D. Florencio and P. A. Chou, “Packet loss concealment for overlapped transform codecs,” US Patent 7,627,467 filed Jun 30, 2005, issued December 1, 2009.
  38. D. Teodosiu, P. A. Chou, A. Heron, C. Huang, T. Kleinpeter, J. Li, E. Schwartz, J. T. Spivey, D. C. Steere, and Y. Wu, “Scheduling connections between peers in a peer-to-peer file sharing environment,” US Patent 7,643,491 filed Dec 16, 2005, issued January 5, 2010.
  39. P. A. Chou, K. Jain, and D. Garg, “Congestion adaptive network data routing,” US Patent 7,613,121 filed Feb 28, 2006, issued November 3, 2009.
  40. A. D. Howell, D. Milstein, L. Criddle, M. Malueg, and P. A. Chou, “Extensible metadata structure,” US Patent 7,502,364 filed Mar 31, 2006, issued March 10, 2009.
  41. D. Howell, D. Milstein, P. A. Chou, M. Malueg, and L. Criddle, “VoIP variable metadata,” US Patent 8,842,660 filed Mar 31, 2006, issued September 23, 2014.
  42. D. Howell, D. Milstein, K. Wang, L. Criddle, P. A. Chou, S. Forbes, and T. Moore, “VoIP contextual information processing,” US Patent 8,228,824 filed Apr 6, 2006, issued July 24, 2012.
  43. D. Milstein, D. A. Howell, L. Criddle, P. A. Chou, and T. Moore, “Providing contextual information with a voicemail message,” US Patent 8,280,015 filed Apr 6, 2006, issued October 2, 2012; US Patent 8,483,368 filed Aug 31, 2012, issued July 9, 2013.
  44. J. Ribas-Corbera and P. A. Chou, “Generalized reference decoder for image or video processing,” US Patent 7,593,466 filed May 4, 2006, issued September 22, 2009; US Patent 7,646,816 filed Sep 19, 2001, issued January 12, 2010.
  45. Y. Wu, J. D. Padhye, R. Chandra, V. N. Padmanabhan, P. A. Chou, and M. J. Khaki, “Local network coding for wireless networks,” US Patent 8,040,836 filed May 26, 2006, issued October 18, 2011.
  46. M. Malueg, P. A. Chou, S. Forbes, and T. Moore, “VoIP communication content control,” US Patent 9,462,118 filed May 30, 2006, issued October 4, 2016.
  47. D. Howell, D. Milstein, K. Wang, L. Criddle, P. A. Chou, S. Forbes, T. Moore, and M. Malueg, “Metadata collection,” US Patent 7,983,247 filed May 31, 2006, issued July 19, 2011.
  48. D. Howell, D. Milstein, L. Criddle, and P. A. Chou, “Processing a received voicemail message,” US Patent 8,385,513 filed May 31, 2006, issued February 26, 2013.
  49. J. Li, D. Teodosiu, P. A. Chou, C. Huang, E. Schwartz, J. T. Spivey, Y. Wu, and A. Heron, “Content synchronization in a file-sharing environment,” US Patent 7,953,785 filed Jun 30, 2006, issued May 31, 2011.
  50. D. Howell, L. Criddle, M. Malueg, P. A. Chou, and L. Smith, “Transmitting packet-based data items,” US Patent 8,971,217 filed Jun 30, 2006, issued March 3, 2015.
  51. W. V. Barkley, P. A. Chou, R. J. Crinon, and T. Moore, “Techniques to perform rate matching for multimedia conference calls,” US Patent 7,898,950 filed Aug 18, 2006, issued March 1, 2011.
  52. W. V. Barkley, P. A. Chou, R. J. Crinon, and T. Moore, “Techniques for managing visual compositions for a multimedia conference call,” US Patent 8,773,494 filed Aug 29, 2006, issued July 8, 2014; US Patent 9,635,314 filed Jun 5, 2014, issued April 25, 2017; US Patent 10,187,608 filed Mar 21, 2017, issued January 22, 2019; US Patent 10,630,938 filed Jan 21, 2019, issued April 21, 2020.
  53. W. V. Barkley, P. A. Chou, R. J. Crinon, and T. Moore, “Techniques for virtual conferencing servers,” US Patent 8,990,305 filed Oct 18, 2006, issued March 24, 2015.
  54. Z. Liu, Z. Zhang, P. A. Chou, and M. Chen, “Energy-based sound source localization and gain normalization,” US Patent 7,924,655 filed Jan 16, 2007, issued April 12, 2011.
  55. D. Florencio, P. A. Chou, and S. S. Kozat, “Forward error correction for media transmission,” US Patent 8,553,757 filed Feb 14, 2007, issued October 8, 2013.
  56. A. Hassan, C. Huitema, W. Stark, Y. Wu, and P. A. Chou, “FEC in cognitive multi-user OFDMA,” US Patent 7,929,623 filed Mar 30, 2007, issued April 19, 2011.
  57. R. Hegde, Z. Liu, L. He, P. A. Chou, and C. A. Meek, “Collaborative media recommendation and sharing technique,” US Patent 8,200,681 filed Aug 22, 2007, issued June 12, 2012.
  58. J. Li, S. Sengupta, M. Ponec, M. Chen, and P. A. Chou, “Rate-controllable peer-to-peer data stream routing,” US Patent 7,636,789 filed Nov 27, 2007, issued December 22, 2009; US Patent 8,260,951 filed Nov 4, 2009, issued September 4, 2012.
  59. R. Hegde, C. Zhang, P. A. Chou, and Z. Liu, “Management of split audio video streams,” US Patent 8,276,195 filed Jan 2, 2008, issued September 25, 2012.
  60. S. Sengupta, M. Chen, J. Li, P. A. Chou, and M. Ponec, “Multi-rate peer-assisted data streaming,” US Patent 8,260,952 filed Jan 31, 2008, issued September 4, 2012.
  61. J. Dmochowski, Z. Liu, and P. A. Chou, “Speech separation with microphone arrays,” US Patent 8,144,896 filed Feb 22, 2008, issued March 27, 2012.
  62. Z. Zhang, X. D. Huang, Z. Liu, C. Zhang, P. A. Chou, and C. Huitema, “Participant positioning in multimedia conferencing,” US Patent 7,840,638 filed Jun 27, 2008, issued November 23, 2010.
  63. D. Florencio and P. A. Chou, “Real-time detection and preservation of speech onset in a signal,” US Patent 7,917,357 filed Jul 28, 2008, issued March 29, 2011.
  64. R. Hegde, Z. Zhang, P. A. Chou, Z. Liu, C. Zhang, and S. Junuzovic, “Multi-device capture and spatial browsing of conferences,” US Patent 8,537,196 filed Oct 6, 2008, issued September 17, 2013; US Patent 9,065,976 filed Jul 9, 2013, issued June 23, 2015.
  65. S. Liu, S. Sengupta, M. Chiang, J. Li, and P. A. Chou, “Models for routing tree selection in peer-to-peer communication,” US Patent 7,738,406 filed Oct 8, 2008, issued June 15, 2010.
  66. D. A. Florencio, A. Acero, W. Buxton, P. A. Chou, R. G. Cutler, J. Garms, C. Huitema, K. M. Quinn, D. A. Rosenfeld, and Z. Zhang, “Audio Transform in Connection with Multiparty Communication,” US Patent 8,340,267 filed Feb 5, 2009, issued December 25, 2012.
  67. Z. Liu, R. Hegde, and P. A. Chou, “Virtual Media Input Device,” US Patent 8,140,715 filed May 28, 2009, issued March 20, 2012.
  68. D. A. Rosenfeld, Z. Liu, R. G. Cutler, P. A. Chou, C. Huitema, and K. M. Quinn, “Interest Determination for Auditory Enhancement,” US Patent 8,416,715 filed Jun 15, 2009, issued April 9, 2013.
  69. J. Li, J. E. Oker, R. K. Hegde, D. A. F. Florencio, M. Pahud, S. K. Cunnington, P. A. Chou, and Z. Zhang, “Adaptive Meeting Management,” US Patent 9,111,263 filed Jun 15, 2009, issued August 18, 2015.
  70. S. K. Cunnington, R. K. Hegde, K. Quinn, J. Li, P. A. Chou, Z. Zhang, and D. Tan, “Detecting reactions and providing feedback to an interaction,” US Patent 8,670,018 filed May 27, 2010, issued March 11, 2014.
  71. B. Byun, P. A. Chou, M. P. Czerwinski, A. Kapoor, and B. Lee, “Non-Linguistic Signal Detection and Feedback,” US Patent 8,963,987 filed May 27, 2010, issued February 24, 2015.
  72. Y. Wu, Y. Zhao, B. Li, M. Chen, J. Li, and P. A. Chou, “Multiparty real time content delivery,” US Patent 8,824,470 filed Jun 2, 2010, issued September 2, 2014.
  73. C. Huang, J. Li, S. Mehrotra, P. A. Chou, F. Livni, H. Chen, J. Thaler, C. Zhang, and K. W. Ross, “Minimizing Network Latency in Interactive Internet Applications,” US Patent 9,059,817 filed Nov 22, 2010, issued June 16, 2015.
  74. P. A. Chou, Z. Zhang, and D. Florencio, “Augmented auditory perception for the visually impaired,” US Patent 8,797,386 filed Apr 22, 2011, issued August 5, 2014.
  75. P. A. Chou, Z. Zhang, C. Zhang, D. A. Florencio, Z. Liu, R. K. Hegde, and N. Chandrasekaran, “Immersive remote conferencing,” US Patent 8,675,067 filed May 4, 2011, issued March 18, 2014.
  76. C. Zhang, W. Zhu, Z. Zhang, and P. A. Chou, “Depth Reconstruction Using Plural Depth Capture Units,” US Patent 9,536,312 filed May 16, 2011, issued January 3, 2017.
  77. P. A. Chou, C. Zhang, Z. Zhang, and S. Liu, “Recovering dis-occluded areas using temporal information integration,” US Patent 9,031,357 filed May 4, 2012, issued May 12, 2015.
  78. A. D. Wilson, Z. Zhang, P. A. Chou, N. S. Fishman, D. M Gillett, and H. Benko, “Providing a Tele-Immersive Experience Using a Mirror Metaphor,” US Patent 9,325,943 filed Feb 20, 2013, issued April 26, 2016; US Patent 9,641,805 filed Mar 18, 2016, issued May 2, 2017; US Patent 10,044,982 filed Mar 28, 2017, issued August 7, 2018.
  79. D. Florencio, P. A. Chou, and S. S. Kozat, “Error resilient coding and decoding for media transmission,” US Patent 9,380,094 filed Oct 3, 2013, issued June 28, 2016.
  80. K. M. Inkpen, S. Junuzovic, S. Kim, A. C. Hoff, J. C. Tang, D. A. Molnar, and P. A. Chou, “Compositing and Transmitting Contextual Information During an Audio Or Video Call,” US Patent 10,771,736 filed Jun 30, 2014, issued September 8, 2020.
  81. Y. Chen, P. A. Chou, and Z. Zhang, “Telepresence experience,” US Patent 9,883,138 filed Jul 16, 2014, issued January 30, 2018.
  82. U. Dogan, C. Rodbro, and P. A. Chou, “Estimating Bandwidth in a Network,” US Patent 9,444,714 filed Aug 7, 2014, issued September 13, 2016; US Patent 10,057,151 filed Aug 12, 2016, issued August 21, 2018.
  83. P. A. Chou and R. L. de Queiroz, “Region-adaptive hierarchical transform and entropy coding for point cloud compression, and corresponding decompression,” US Patent 10,223,810 filed May 28, 2016, issued March 5, 2019.
  84. P. A. Chou and R. L. de Queiroz, “Scalable point cloud compression with transform, and corresponding decompression,” US Patent 10,694,210 filed May 28, 2016, issued June 23, 2020.
  85. P. A. Chou, V. Padmanabhan, G. Ananthanarayanan, J. Jiang, and R. Das, “Data-driven network path selection,” US Patent 10,045,276 filed May 31, 2016, issued August 7, 2018.
  86. P. A. Chou, M. Krivokuca, R. J. W. Higgs, C. Loop, and E. J. d’Eon, “Multiresolution surface representation and compression,” US Patent 10,192,353 filed Oct 17, 2017, issued January 29, 2019.
  87. G. Cernigliaro, P. A. Chou, and E. J. d’Eon, “UV mapping and compression,” US Patent 10,242,484 filed Oct 17, 2017, issued March 26, 2019; US Patent 10,818,069 filed Aug 22, 2018, issued October 27, 2020; US Patent 11,158,109 filed Sep 15, 2020, issued October 26, 2021.
  88. P. A. Chou, X. Zhang, M.-T. Sun, and R. de Queiroz, “View-dependent color compression,” US Patent 10,262,451 filed Apr 9, 2018, issued April 16, 2019.
  89. P. A. Chou, K. Thawley, R. J. W. Higgs, and J. Park, “Hologram streaming machine,” US Patent 10,834,391 filed Apr 23, 2018, issued November 10, 2020.
  90. P. A. Chou, M. Koroteev, M. Krivokuca, R. J. W. Higgs, and C. Loop, “Bezier volume representation of point cloud attributes,” US Patent 10,853,447 filed Jan 17, 2019, issued December 1, 2020.
  91. P. A. Chou, B. Isik, S. J. Hwang, N. M. Johnston, and G. D. Toderici, “Learned volumetric attribute compression using coordinate-based networks,” US Patent 11,900,525 filed Mar 30, 2022, issued February 13, 2024.

Pending

Over 25 other patents pending, including:

  1. P. A. Chou and R. L. de Queiroz, “Motion-compensated compression of dynamic voxelized point clouds,” US Patent Application Publication 2017/0347120, November 30, 2017, US Patent Application Publication 2022/0182674 published June 9, 2022.
  2. D. Tang, S. Singh, C. Keskin, P. A. Chou, C. Haene, M. Dou, S. R. F. Fanello, J. Taylor, A. Tagliasacchi, P. L. Davidson, Y. Zhang, O. G. Guleryuz, S. Izadi, and S. Bouaziz, “Systems and methods for compression of three-dimensional volumetric representations,” US Patent Application Publication 2023/0154051 published May 18, 2023.