Patents by Inventor David Christman
David Christman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11088999Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: GrantFiled: January 7, 2019Date of Patent: August 10, 2021Assignee: TIME WARNER CABLE ENTERPRISES LLCInventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Publication number: 20190215310Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: ApplicationFiled: January 7, 2019Publication date: July 11, 2019Inventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Patent number: 10178072Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: GrantFiled: July 2, 2015Date of Patent: January 8, 2019Assignee: Time Warner Cable Enterprises LLCInventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Publication number: 20160182461Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: ApplicationFiled: July 2, 2015Publication date: June 23, 2016Inventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Patent number: 9083513Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: GrantFiled: September 10, 2012Date of Patent: July 14, 2015Assignee: Time Warner Cable Enterprises LLCInventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Publication number: 20130070922Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: ApplicationFiled: September 10, 2012Publication date: March 21, 2013Inventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Patent number: 8266429Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: GrantFiled: July 20, 2004Date of Patent: September 11, 2012Assignee: Time Warner Cable, Inc.Inventors: William Helms, Michael T. Hayashi, Kevin J. Leddy, David A. Christman
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Patent number: 8204354Abstract: A system and method for controlling a digital video recorder on a cable network. Signaling associated with the answering or initiation of a digital telephone call by a digital telephone subscriber is used to issue commands to a digital video recorder (DVR). A signal is generated by an MTA when the telephone is enters an “off-hook” state and sent to the DVR to initiate recording of a program being viewed by the called party. When the phone goes “on-hook”, the called party resumes watching the program from exactly where it was interrupted. The MTA may be connected directly to the VTD/DVR and the telephone state is determined by the DVR from information provided by the MTA. Alternatively, a soft switch monitors signaling from the MTA indicative of the state of the called telephone. A telephone state message comprising the telephone state information is then sent over an out-of-band channel/path to a DVR client within the VTD. The DVR client uses the telephone state information to control a DVR.Type: GrantFiled: November 12, 2008Date of Patent: June 19, 2012Assignee: Time Warner Cable, Inc.Inventors: Paul Alexander, Christopher P. Williams, Kenneth Gould, David Christman
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Publication number: 20090060152Abstract: A system and method for controlling a digital video recorder on a cable network. Signaling associated with the answering or initiation of a digital telephone call by a digital telephone subscriber is used to issue commands to a digital video recorder (DVR). A signal is generated by an MTA when the telephone is enters an “off-hook” state and sent to the DVR to initiate recording of a program being viewed by the called party. When the phone goes “on-hook”, the called party resumes watching the program from exactly where it was interrupted. The MTA may be connected directly to the VTD/DVR and the telephone state is determined by the DVR from information provided by the MTA. Alternatively, a soft switch monitors signaling from the MTA indicative of the state of the called telephone. A telephone state message comprising the telephone state information is then sent over an out-of-band channel/path to a DVR client within the VTD. The DVR client uses the telephone state information to control a DVR.Type: ApplicationFiled: November 12, 2008Publication date: March 5, 2009Inventors: Paul Alexander, Christopher P. Williams, Kenneth Gould, David Christman
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Patent number: 7486869Abstract: A system and method for controlling a digital video recorder on a cable network. Signaling associated with the answering or initiation of a digital telephone call by a digital telephone subscriber is used to issue commands to a digital video recorder (DVR). A signal is generated by an MTA when the telephone is enters an “off-hook” state and sent to the DVR to initiate recording of a program being viewed by the called party. When the phone goes “on-hook”, the called party resumes watching the program from exactly where it was interrupted. The MTA may be connected directly to the VTD/DVR and the telephone state is determined by the DVR from information provided by the MTA. Alternatively, a soft switch monitors signaling from the MTA indicative of the state of the called telephone. A telephone state message comprising the telephone state information is then sent over an out-of-band channel/path to a DVR client within the VTD. The DVR client uses the telephone state information to control a DVR.Type: GrantFiled: December 1, 2004Date of Patent: February 3, 2009Assignee: Time Warner Cable, Inc.Inventors: Paul Alexander, Christopher P. Williams, Kenneth Gould, David Christman
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Publication number: 20070235129Abstract: Apparatuses and methods for joining structural members. In one embodiment, an apparatus for joining a first member to a second member includes a first part and a second part configured to be engaged with and bonded to the first part. In one aspect of this embodiment, the first part includes a first surface facing a first direction, a second surface facing a second direction different than the first direction, a first recess at least proximate to the first surface, and a second recess at least proximate to the second surface. In another aspect of this embodiment, the second part includes a third surface facing a third direction, a fourth surface facing a fourth direction different than the third direction, a first protuberance at least proximate to the third surface, and a second protuberance at least proximate to the fourth surface.Type: ApplicationFiled: September 19, 2005Publication date: October 11, 2007Applicant: The Boeing CompanyInventors: David Christman, William Roeseler
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Publication number: 20060115058Abstract: A system and method for controlling a digital video recorder on a cable network. Signaling associated with the answering or initiation of a digital telephone call by a digital telephone subscriber is used to issue commands to a digital video recorder (DVR). A signal is generated by an MTA when the telephone is enters an “off-hook” state and sent to the DVR to initiate recording of a program being viewed by the called party. When the phone goes “on-hook”, the called party resumes watching the program from exactly where it was interrupted. The MTA may be connected directly to the VTD/DVR and the telephone state is determined by the DVR from information provided by the MTA. Alternatively, a soft switch monitors signaling from the MTA indicative of the state of the called telephone. A telephone state message comprising the telephone state information is then sent over an out-of-band channel/path to a DVR client within the VTD. The DVR client uses the telephone state information to control a DVR.Type: ApplicationFiled: December 1, 2004Publication date: June 1, 2006Inventors: Paul Alexander, Christopher Williams, Kenneth Gould, David Christman
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Publication number: 20060020786Abstract: A “trusted domain” is established within which content received from a communications network, e.g., a cable TV network, is protected from unauthorized copying thereof, in accordance with the invention. In an illustrative embodiment, the trusted domain includes a device associated with a user which receives content from the cable TV network. The content may be encrypted using a content key in accordance, e.g., with a 3DES encryption algorithm before it is stored in the device. In addition, a first encrypted content key version and a second encrypted content key version are generated by respectively encrypting the content key with a public key associated with the device and another public key associated with the user, in accordance with public key cryptography. The first and second encrypted content key versions are stored in association with the encrypted content in the device storage.Type: ApplicationFiled: July 20, 2004Publication date: January 26, 2006Inventors: William Helms, Michael Hayashi, Kevin Leddy, David Christman
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Publication number: 20050171885Abstract: The present invention involves a computer system and method for evaluating a portfolio of insurance policies system and method which evaluates the portfolio. The computer determines relevant data from a database of experiential data relating to insurance policies. Also, characteristics of a portfolio of insurance policies are analyzed and identified by the computer for correspondence to the relevant data. The computer calculates a valuation for the portfolio based on the experiential data and the analyzed characteristics. The database of experiential data relating to insurance policies has financial data and associated demographic data. The computer also indexes policies of the portfolio based on predetermined risk factors. The experiential data may be updated and the valuation recalculated when new experiential data is obtained.Type: ApplicationFiled: November 3, 2004Publication date: August 4, 2005Inventors: David Christman, James Wallace, Melanie Otto, Kathy Yeary