Patents by Inventor Holger Hofmann

Holger Hofmann 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).

  • Patent number: 10683894
    Abstract: An air bearing for movably bearing at least two elements includes a bearing main body with a first air outflow channel and a second air outflow channel. The first air outflow channel is supplied with air via at least one first air delivery device. The second air outflow channel is supplied with air via at least one second air delivery device. A sensor detects at least one of a bearing stroke, a bearing pressure, and a bearing throughflow, and a controller adjusts the supply of the air to at least one of the first air outflow channel and the second air outflow channel in accordance with the at least one of the bearing stroke, the bearing pressure, and the bearing throughflow.
    Type: Grant
    Filed: March 25, 2018
    Date of Patent: June 16, 2020
    Assignee: Carl Zeiss Industrielle Messtechnik GmbH
    Inventors: Malte Langmack, Steffen Strauss, Wolfgang Strauss, Raphael Koch, Christof Poglitsch, Holger Hofmann, Nikolai Zeller
  • Patent number: 10121509
    Abstract: Authentication of discs occurs by the use of interferometric authentication data. Such authentication data of a data disc is generated based on an interference pattern associated with thickness variations of a material layer on the disc. The interference pattern represents a unique fingerprint that can be used for authentication of individual discs.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: November 6, 2018
    Assignee: Thomson Licensing
    Inventors: Alan Bruce Hamersley, John Matthew Town, Holger Hofmann
  • Publication number: 20180283451
    Abstract: An air bearing for movably bearing at least two elements includes a bearing main body with a first air outflow channel and a second air outflow channel. The first air outflow channel is supplied with air via at least one first air delivery device. The second air outflow channel is supplied with air via at least one second air delivery device. A sensor detects at least one of a bearing stroke, a bearing pressure, and a bearing throughflow, and a controller adjusts the supply of the air to at least one of the first air outflow channel and the second air outflow channel in accordance with the at least one of the bearing stroke, the bearing pressure, and the bearing throughflow.
    Type: Application
    Filed: March 25, 2018
    Publication date: October 4, 2018
    Inventors: Malte Langmack, Steffen Strauss, Wolfgang Strauss, Raphael Koch, Christof Poglitsch, Holger Hofmann, Nikolai Zeller
  • Publication number: 20170148480
    Abstract: Authentication of discs occurs by the use of interferometric authentication data. Such authentication data of a data disc is generated based on an interference pattern associated with thickness variations of a material layer on the disc. The interference pattern represents a unique fingerprint that can be used for authentication of individual discs.
    Type: Application
    Filed: February 23, 2015
    Publication date: May 25, 2017
    Inventors: Alan Bruce HAMERSLEY, John Matthew TOWN, Holger HOFMANN
  • Patent number: 9333792
    Abstract: In a method or system for monitoring of printed data in a printing system, a monitoring code for a respective page to be printed of a recording medium is generated. The monitoring code is printed on the respective page. The printed monitoring code is automatically read and evaluated such that monitoring numbers that are not contained in numerical succession in a monitoring list are used as the monitoring codes.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: May 10, 2016
    Assignee: Oce Printing Systems GmbH
    Inventor: Holger Hofmann
  • Patent number: 9117487
    Abstract: A method and apparatus for disc authentication are disclosed. The authentication method includes measuring at least one physical property of a data disc, which includes at least one of an angle and an eccentricity parameter associated with two data layers of a data disc, and authenticating the disc by determining whether a match exists between the measured property and encoded information on data layer the data disc relating to the physical property.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: August 25, 2015
    Assignee: Thomson Licensing
    Inventors: John Matthew Town, Holger Hofmann, Alan Bruce Hamersley
  • Patent number: 9076483
    Abstract: A system and method for replicating protected content on media includes a controller for enabling replicating of media content from partial encoded content received at a location of the controller. A media recorder is coupled to the controller and including a modulation process (104) to complete encoding of the partial encoded content to record media content on media readable by a device other than the media recorder.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: July 7, 2015
    Assignee: Thomson Licensing LLC
    Inventors: Alan Bruce Hamersley, Holger Hofmann, John Matthew Town
  • Patent number: 9025426
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: May 5, 2015
    Assignee: Thomson Licensing
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Patent number: 9019807
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: April 28, 2015
    Assignee: Thomson Licensing
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Patent number: 8921011
    Abstract: A method is provided for mastering optically variable devices (OVDs) used to authenticate optical discs. The method generally includes the steps of providing a laser beam recorder (LBR), introducing a substrate to the LBR, and exposing a portion of the substrate to the LBR. The mastering system thus includes the LBR, which has a laser that emits a beam, a processor or computer for programming or otherwise controlling the beam in order to expose the substrate and create the desired optical effect. Depending on the material used for the substrate, the exposure is then developed, if necessary, and processed to generate a master for the OVD. The OVD can then be replicated in order to provide authentic resultant products or articles, such as optical discs.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: December 30, 2014
    Assignee: 3dcd, LLC
    Inventors: Nigel C. Abraham, Holger Hofmann, Raymond L. Keating
  • Publication number: 20140347968
    Abstract: A method and apparatus for disc authentication are disclosed. The authentication method includes measuring at least one physical property of a data disc, which includes at least one of an angle and an eccentricity parameter associated with two data layers of a data disc, and authenticating the disc by determining whether a match exists between the measured property and encoded information on data layer the data disc relating to the physical property.
    Type: Application
    Filed: September 21, 2012
    Publication date: November 27, 2014
    Applicant: Thomson Licensing
    Inventors: John Matthew Town, Holger Hofmann, Alan Bruce Hamersley
  • Patent number: 8792321
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: July 29, 2014
    Assignee: Thomson Licensing
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Publication number: 20140153374
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Application
    Filed: February 4, 2014
    Publication date: June 5, 2014
    Applicant: THOMSON LICENSING
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Publication number: 20140146656
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 29, 2014
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Publication number: 20140146655
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 29, 2014
    Applicant: THOMSON LICENSING
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Patent number: 8675466
    Abstract: An optical disc having a region with pre-recorded data and a recordable region, a method of fabricating the disc, a stamper for forming a disc master, and a recording device for use with the disc are disclosed. Data recorded in the recordable region may be used for activation of the disc, providing unique identification or enhancing program content on the disc.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: March 18, 2014
    Assignee: Thomson Licensing
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Patent number: 8599674
    Abstract: The invention relates to a method for storing data in a prerecorded area of an optical recording medium, and to an optical recording medium having at least one prerecorded area in which data is stored according to the method. It is an object to propose a method for storing data in a prerecorded area of an optical recording medium using pits and lands, whereby the signal obtained from the pits and lands is compatible with a high frequency modulated groove signal. According to the invention, the pits and lands adjacent to bit cell signal transitions are arranged in a predefined manner, either in a fixed recurring sequence of pits and lands or symmetrically to the bit cell signal transitions.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: December 3, 2013
    Assignee: Thomson Licensing
    Inventors: Hartmut Richter, Holger Hofmann, Stephan Knappmann, Christof Ballweg, Christian B├╝chler
  • Publication number: 20130234364
    Abstract: A method is provided for mastering optically variable devices (OVDs) used to authenticate optical discs. The method generally includes the steps of providing a laser beam recorder (LBR), introducing a substrate to the LBR, and exposing a portion of the substrate to the LBR, The mastering system thus includes the LBR, which has a laser that emits a beam, a processor or computer for programming or otherwise controlling the beam in order to expose the substrate and create the desired optical effect. Depending on the material used for the substrate, the exposure is then developed, if necessary, and processed to generate a master for the OVD. The OVD can then be replicated in order to provide authentic resultant products or articles, such as optical discs.
    Type: Application
    Filed: April 23, 2013
    Publication date: September 12, 2013
    Applicant: 3dcd, LLC
    Inventors: NIGEL C. ABRAHAM, Holger HOFMANN, Raymond L. KEATING
  • Patent number: 8445091
    Abstract: An optical disc having at least two metal-containing layers with different compositions and partially overlapping areal extents in the plane of the disc and method of forming the disc are described. The optical disc with dual metallization exhibits visually distinct regions suitable for use for identification purposes.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: May 21, 2013
    Assignee: Thomson Licensing
    Inventors: Justin John Cunningham, Ibsen Lourenco, Holger Hofmann
  • Patent number: 8379501
    Abstract: The present principles provide a way to place a multilevel grayscale image, visible with the bare eye in the data area of an optical disc. This feature can be used to authenticate a legitimate disc, since the image features are lost when copying a disc either with a PC recording drive or by a pirate creating a data set to be used on a laser beam recorder to produce forged ROM discs. The modulation rules are selectively varied during disc writing in a way to change the distribution of pit/land lengths, so that the at least three (3) different diffraction properties are generated, and therefore produce at least three (3) distinct looks to the bare eye.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: February 19, 2013
    Assignee: Thomson Licensing
    Inventors: Holger Hofmann, Alan Bruce Hamersley, John Matthew Town