- Roaming Hardware Paired Encryption Key Generation
US Patent 7,634,659 granted 12/15/09
Inventor: James W. Fahrny - Method and System of Determining Possible Change in Location of Network Drive
US Patent No. 7,716,325 granted on 5/11/10
Inventor: Ralph W. Brown - Method and System of Determining Last Hop Device Addresses
US Patent 7,392,216 granted 05/26/09
Inventors: Kevin C. Johns, Eric S. Rosenfeld, Jean-François Mulè - Hierarchical Encryption Key System for Securing Digital Media
US Patent 7,480,385 granted 01/20/09
Inventor: Joseph W. Weber - System and Method to Test Network Performance with Impairments
US Patent 7,451,472 granted 11/11/08
Inventor: Thomas H. Williams - Method for Using Communication Channel Round-Trip Response Time for Digital Asset Management
US Patent 7,398,392 granted 07/08/08
Inventor: Joseph W. Weber - Synchronizing services across opencable and packetcable
US Patent No. 7,093,275 granted 08/15/06
Inventors: David A. Birks, So Vang, David Broberg - Real time device polling for multiplexed transmission
US Patent No. 6,654,957 granted 11/25/03
Inventors: Thomas E. Moore, Andrew W. Sundelin, Jeff Weaver - Quantizer that uses optimum decision thresholds
US Patent No. 6,292,126 B1 granted 09/18/01
Inventors: Majid Chelehmal, Rich S. Prodan - Peak limiter for suppressing undesirable energy in a return path of a bidirectional cable network
US Patent No.5,892,865 granted 04/06/99
Inventor: Thomas H. Williams - Bidirectional cable network with a mixing tap for suppressing undesirable noise in signals from a remote end of the network
US Patent No. 5,870,513 granted 2/9/99
Inventor: Thomas H. Williams - Hybrid return gate system in a bidirectional cable network
US Patent No. 5,867,764 granted 02/02/99
CA Patent Cert. No. 2,217,338 granted 07/24/01
Inventor: Thomas H. Williams - Modulator/demodulator using baseband filtering
US Patent No. 5,825,242 granted 10/20/98
Inventors: Richard S. Prodan, Thomas H. Williams - Multiple user access method using ofdm
US Patent No.5,815,488 granted 09/29/98
Inventors: Thomas H. Williams, Richard S. Prodan - Undesirable energy suppression system in the return path of a bidirectional cable network having dynamically allocated time slots
US Patent No. 5,815,794 granted 09/29/98
CA Patent Cert. No. 2,184,527 granted 07/24/01
Inventor: Thomas H. Williams - Method for protecting publicly distributed software
US Patent No. 5,754,646 granted 05/19/98
Inventors: Thomas H. Williams, Claude T. Baggett - Undesirable energy suppression system in a contention based communication network
US Patent No.5,745,836 granted 04/28/98
Inventor: Thomas H. Williams - Demodulation using a time domain guard interval with an overlapped transform
US Patent No. 5,886,749 granted 03/23/99
CA Patent No. 2,217,259 granted 06/25/02
Inventors: Thomas H. Williams, Majid Chelehmal, Yasuhiro Ito - System for distributing radio telephone signals over a cable television network
US Patent No. 5,381,459 granted 01/10/95
Inventor: John Lappington - System for transmission of digital data using orthogonal frequency division
US Patent No. 5,371,548 granted 12/06/94
Inventor: Thomas H. Williams - System and Method of Managing Digital Rights
US Patent No. 7,818,260 granted 10/19/10
Inventor: Clarke Stevens - Method and System of Distributing Advertisements
US Patent No 7,860,743 granted 12/28/10
Inventor: Clarke Stevens - Method and System of Transferring Scrambled Content
US Patent No 7,907,728 granted 3/15/11
Inventor: Clarke Stevens - Media Formatting
US Patent No 7,760,740 granted 7/20/10
Inventor: David K. Broberg - Media Content Sharing
US Patent No 7,886,327 granted on 2/08/11
Inventor: Clarke Stevens - Increasing error correction in data streams encoded with linear block code
US Patent No 7,921,351 granted on 4/05/11
Inventors: Luis Alberto Campos and Thomas H. Williams
CableLabs Patents
An extensive list of patents owned by CableLabs.
