Douglas M Rayburn from 4249 Kalamath St, Denver, CO 80211, age 52, Phone: 3039194566

Name / Title

Company / Classification

Phones & Addresses

Douglas M. Rayburn
Principal

Draybu Islands LLC
Business Services at Non-Commercial Site

2800 19 St, Boulder, CO 80304

Us Patents

Host Certification Method And System
view source
US Patent:

7310821, Dec 18, 2007
Filed:

Aug 27, 2001
Appl. No.:

09/940026
Inventors:

Lane W. Lee - Lafayette CO, US
Timothy R. Feldman - Louisville CO, US
Douglas M. Rayburn - Denver CO, US
Gary G. Kiwimagi - Loveland CO, US
Assignee:

DPHI Acquisitions, Inc. - Longmont CO
International Classification:

G06F 7/04
H04L 9/00
US Classification:

726 27, 726 26, 713156, 705 51, 705 54, 705 55, 705 56, 705 57
Abstract:

A system and method is provided for authenticating a device. A method includes receiving a certificate from the device, the certificate including a plurality of fields, including a field holding a digital signature from a certifying authority, verifying the digital signatures in the certificate, the verifying including at least one of verifying the certifying authority digital signature using the certifying authority public key; and verifying a device digital signature using a device public key, and receiving validation data from a source, the validation data identifying one or more data in the certificate as valid or invalid according to predetermined criteria, and if the digital signatures are verified and validated, transmitting a session key to the device to establish a secure communication channel.

Revocation Method And Apparatus For Secure Content
view source
US Patent:

7672903, Mar 2, 2010
Filed:

Aug 27, 2001
Appl. No.:

09/939896
Inventors:

Lane W. Lee - Lafayette CO, US
Timothy R. Feldman - Louisville CO, US
Douglas M. Rayburn - Denver CO, US
Gary G. Kiwimagi - Loveland CO, US
Assignee:

DPHI Acquisitions, Inc. - Longmont CO
International Classification:

G06F 21/00
US Classification:

705 51, 705 64, 713158
Abstract:

A system and method is provided for revoking a device. A method includes receiving a certificate from the device, the certificate including one or more of fields, at least one of the fields holding a signature, attempting to verify the signature, receiving a revocation list from a source, the revocation list identifying one or more data on the certificate as valid or invalid, the data including at least one of the fields of the certificate; and if one of one or more signatures identified unsuccessfully verified and one or more data is identified as invalid, preventing the transmission of a session key to the device, the session key being required to establish a secure communication channel.

System And Method For Detecting Unauthorized Copying Of Encrypted Data
view source
US Patent:

7729495, Jun 1, 2010
Filed:

Aug 27, 2001
Appl. No.:

09/940174
Inventors:

Lane W. Lee - Lafayette CO, US
Timothy R. Feldman - Louisville CO, US
Douglas M. Rayburn - Denver CO, US
Gary G. Kiwimagi - Loveland CO, US
Assignee:

DPHI Acquisitions, Inc. - Longmont CO
International Classification:

H04N 5/91
US Classification:

380203, 360 60, 705 57, 705 51, 713193
Abstract:

A system and method is provided for detecting unauthorized actions with respect to encrypted data on a media disk, the media disk including a first portion for prerecorded content and a second portion for written content. The method includes reading an identifier on the media disk, wherein the identifier includes one or more sections located in one of the first portion for pre-recorded content, the second portion for written content, and both the first portion for pre-recorded content and the second portion for written content, determining whether the identifier includes a section located in the second portion written content, comparing the identifier with one or more predetermined types of identifiers for which a section is located in the second portion for written content, and if the identifier is of a type that is one of the one or more predetermined types of identifiers, detecting an unauthorized action.

Secure Access Method And System
view source
US Patent:

20030115147, Jun 19, 2003
Filed:

Aug 27, 2001
Appl. No.:

09/940083
Inventors:

Timothy Feldman - Louisville CO, US
Lane Lee - Lafayette CO, US
Michael Braitberg - Boulder CO, US
Douglas Rayburn - Denver CO, US
Gary Kiwimagi - Loveland CO, US
International Classification:

H04K001/00
H04L009/00
G06F017/60
US Classification:

705/064000
Abstract:

A secure electronic content system and method is provided. The system includes a controller including an interface component, a host system coupled to the controller, the host system configured to present content under predetermined conditions, the host system operable with a navigation protocol, the host system further including a system manager operable with an associations component configured to be at least partially run by the host system, a translator configured to provide meanings and generate commands within the host system at least a first digital rights management (DRM) component configured to provide encoding and access rules for the content; and a file system component including a file system application programming interface (API) configured to provide a logical interface between a plurality of components.

Mastering Process And System For Secure Content
view source
US Patent:

20030135465, Jul 17, 2003
Filed:

Aug 27, 2001
Appl. No.:

09/939960
Inventors:

Lane Lee - Lafayette CO, US
Timothy Feldman - Louisville CO, US
Douglas Rayburn - Denver CO, US
Gary Kiwimagi - Loveland CO, US
International Classification:

G06F017/60
US Classification:

705/051000
Abstract:

A system and method is provided for securing content stored on media. One method includes attaching content privileges to the media, wherein the privileges govern a plurality of levels of access, and configuring the media to permit access to the content according to the content privileges and predetermined conditions. An apparatus for securing content stored on media includes at least one tool for transferring content onto the media, the tool configured to attach a plurality of levels of access, wherein content privileges and predetermined conditions govern access to the content.

System And Method For Identifying Vendors Of Hidden Content
view source
US Patent:

20030188175, Oct 2, 2003
Filed:

Aug 27, 2001
Appl. No.:

09/940025
Inventors:

Steven Volk - Boulder CO, US
Michael Braitberg - Boulder CO, US
Timothy Feldman - Louisville CO, US
Lane Lee - Lafayette CO, US
Douglas Rayburn - Denver CO, US
Gary Kiwimagi - Loveland CO, US
International Classification:

G06F011/30
G06F009/445
US Classification:

713/191000, 717/177000
Abstract:

A system and method of identifying one or more vendors associated with a media disk includes providing instructions for the media disk, during a first install of the media disk into a host according to the instructions, installing an identifier on the media disk, the identifier including a code identifying the vendor from which the media disk originated, and after transmitting data to a server, reading the identifier to find a location associated with the vendor. An embodiment of a system and method of identifying a location via a media disk having at least a writeable portion and a non-rewriteable portion includes writing the location on the writeable portion, distributing one or more of the media disks to one or more entities, the location associating the media disks to the one or more entities, and if a return of the media disks occurs, altering the location according to predetermined conditions.

Unlocking Method And System For Data On Media
view source
US Patent:

20030188183, Oct 2, 2003
Filed:

Aug 27, 2001
Appl. No.:

09/940035
Inventors:

Lane Lee - Lafayette CO, US
Timothy Feldman - Louisville CO, US
Douglas Rayburn - Denver CO, US
Gary Kiwimagi - Loveland CO, US
International Classification:

H04L009/00
US Classification:

713/200000, 713/151000
Abstract:

A system and method is provided for altering secured data on a storage medium. The method includes establishing a secure session with a host, receiving, via a communications channel, a command to unlock the secured data governed by at least one of a plurality of content storage models, and unlocking the secured data wherein the command responds to an identifier on the medium, the identifier configured to govern access to the secured data, and at least one of the plurality of content storage models is a secure content manager. A system includes a plurality of content storage models for locked data stored on the storage medium, and an engine capable of unlocking secured data wherein the engine modifies attributes of the data on the storage medium to unlock the secured data according to a content storage model in response to a command to unlock the data.