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: 8131444
    Abstract: A method for a driver assistance system of a motor vehicle includes the following steps: on the basis of a digital map of a navigation system, verifying whether there is a turn option, and, if there is a turn option, analyzing the dynamic data, measured by a locating system, of a preceding vehicle and calculating a turn probability for the preceding vehicle on the basis of these data.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: March 6, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Werner Urban, Holger Hofmann, Brendan Gibson
  • Patent number: 8036803
    Abstract: Adaptive cruise control (ACC) system for motor vehicles is provided, the ACC system having a sensor system for acquiring data concerning a target object and the own (host) vehicle, an actuator system for controlling the longitudinal movement of the vehicle, and a controller that intervenes in the actuator system within certain intervention limits in order to maintain a defined, controlled target distance from the target object, and an output device for issuing a take-over request to the driver if the controlled target distance cannot be maintained. The ACC system further includes a prediction system for predicting a conflict situation in which the controlled target distance cannot be maintained, in which case the take-over request is initiated before the conflict situation actually occurs.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: October 11, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Harald Michi, Goetz Braeuchle, Holger Hofmann
  • Patent number: 7928865
    Abstract: There are provided a method and apparatus for embedding a second level code into a first level code of an optical disc by data modulation rule variation. The apparatus includes a multi-level, varying rule based modulator (199) for modulating the first level code to obtain a channel bit stream representative of the first level code and having the second level code embedded therein. The multi-level, varying rule based modulator modulates the first level code using modulation rules respectively having different statistical properties of pit-land length distributions that preserve a readability of the first level code and that are distinguishable at readout of the optical disc. The different statistical properties represent binary or multilevel data of the second level code.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: April 19, 2011
    Assignee: Thomson Licensing
    Inventors: Holger Hofmann, Alan Bruce Hamersley, John Matthew Town
  • Publication number: 20100322055
    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 19, 2009
    Publication date: December 23, 2010
    Inventors: John Matthew Town, Alan Bruce Hamersley, Holger Hofmann
  • Publication number: 20100188272
    Abstract: There are provided a method and apparatus for embedding a second level code into a first level code of an optical disc by data modulation rule variation. The apparatus includes a multi-level, varying rule based modulator (199) for modulating the first level code to obtain a channel bit stream representative of the first level code and having the second level code embedded therein. The multi-level, varying rule based modulator modulates the first level code using modulation rules respectively having different statistical properties of pit-land length distributions that preserve a readability of the first level code and that are distinguishable at readout of the optical disc. The different statistical properties represent binary or multilevel data of the second level code.
    Type: Application
    Filed: June 12, 2006
    Publication date: July 29, 2010
    Inventors: Holger Hofmann, Alan Bruce Hamersley, John Matthew Town
  • Publication number: 20100183895
    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: Application
    Filed: August 20, 2008
    Publication date: July 22, 2010
    Inventors: Justin John Cunningham, Ibsen Lourenco, Holger Hofmann
  • Publication number: 20090245055
    Abstract: An apparatus includes a controller for enabling replicating of media content from encoded content received, and a recorder responsive to the controller for recording content on media readable by a device other than said recorder.
    Type: Application
    Filed: June 1, 2006
    Publication date: October 1, 2009
    Inventors: Alan Bruce Hamersley, Holger Hofmann, John Matthew Town
  • Publication number: 20090204304
    Abstract: A method for a driver assistance system of a motor vehicle includes the following steps: on the basis of a digital map of a navigation system, verifying whether there is a turn option, and, if there is a turn option, analyzing the dynamic data, measured by a locating system, of a preceding vehicle and calculating a turn probability for the preceding vehicle on the basis of these data.
    Type: Application
    Filed: June 23, 2006
    Publication date: August 13, 2009
    Inventors: Werner Urban, Holger Hofmann, Brendan Gibson
  • Publication number: 20090122684
    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 three (3) different diffraction properties are generated, and therefore produce at least three (3) distinct looks to the bare eye.
    Type: Application
    Filed: June 15, 2006
    Publication date: May 14, 2009
    Inventors: Holger Hofmann, Alan Bruce Hamersley, John Matthew Town
  • Publication number: 20090113555
    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: Application
    Filed: April 12, 2006
    Publication date: April 30, 2009
    Inventors: Alan Bruce Hamersley, Holger Hofmann, John Matthew Town
  • Publication number: 20070282513
    Abstract: Adaptive cruise control (ACC) system for motor vehicles is provided, the ACC system having a sensor system for acquiring data concerning a target object and the own (host) vehicle, an actuator system for controlling the longitudinal movement of the vehicle, and a controller that intervenes in the actuator system within certain intervention limits in order to maintain a defined, controlled target distance from the target object, and an output device for issuing a take-over request to the driver if the controlled target distance cannot be maintained. The ACC system further includes a prediction system for predicting a conflict situation in which the controlled target distance cannot be maintained, in which case the take-over request is initiated before the conflict situation actually occurs.
    Type: Application
    Filed: December 9, 2004
    Publication date: December 6, 2007
    Inventors: Harald Michi, Goetz Braeuchle, Holger Hofmann
  • Patent number: 7274901
    Abstract: The invention relates to a method and an arrangement for generating positionally-accurate print images on a carrier material with the aid of an electrophotographic printer or copier. A positioning error of the position of the carrier material with respect to a toner image present on the toner image carrier is determined, which error occurs during the contacting of a carrier material to be printed. Dependent on the positioning error determined, for every subsequent contacting of the carrier material to be printed with the toner image carrier, the position of the carrier material with respect to the toner image is adapted before the contacting such that the carrier material and the toner image are arranged with respect to one another substantially free of positioning errors.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: September 25, 2007
    Assignee: Oce Printing Systems GmbH
    Inventors: Hans Winter, Johann Bartosch, Holger Hofmann, Heinrich Lay, Günther Gassner, Frank Freudenberg
  • Publication number: 20070178287
    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: January 29, 2007
    Publication date: August 2, 2007
    Inventors: NIGEL C. ABRAHAM, Holger Hofmann, Raymond L. Keating
  • Publication number: 20070147209
    Abstract: Method for recording on an optical recording medium The invention relates to a method for recording on an optical recording medium, to an optical recording medium suitable for this method, and to a device for writing to optical recording media using such method or optical recording medium. According to the invention the recording process is split into two tasks: Pre-writing an optical recording medium, e.g. in a stationary device, and recording on the optical recording medium with a low-power write strategy, e.g. in a mobile device.
    Type: Application
    Filed: December 18, 2006
    Publication date: June 28, 2007
    Inventors: Hartmut Richter, Holger Hofmann, Dietmar Braeuer, Gael Pilard
  • Publication number: 20070053256
    Abstract: In drives for optical storage media, a focus error signal generated by means of weighted addition from main beam and secondary beam focus error signals always contains an undesired component of the track error signal whenever the weighting factors are not exactly tuned to the optical and mechanical properties of the drive actually present and of the storage medium. The invention describes methods for tuning the weighting factors automatically to these properties. The methods are suitable for use directly after the insertion of the storage medium, while some can also be applied without interruption during the writing or reading operation.
    Type: Application
    Filed: May 14, 2004
    Publication date: March 8, 2007
    Inventors: Christian Büchler, Holger Hofmann
  • Publication number: 20070053266
    Abstract: Device and method for reading multilayer optical disk The invention refers to a device and a method for scanning an optical data carrier (1) by means of a main scanning beam (3) being reflected by the data carrier (1) and being detected by means of a photodetector (10), the data carrier (1) having first and second layers (11,12) to be scanned, the second layer (12) being scanned through the first layer (11), light passing the first layer (11) being shaded dependent on local properties of the first layer (11). An object of the invention is to propose a device having increased performance even for use with multi layer disks (1) having a layer (11) causing light fluctuations on a layer (12) to be scanned, as well as a respective method. According to the invention such device is provided with means (2,7,17) for keeping an output signal (D) of the photodetector (10) independent of variations of shading.
    Type: Application
    Filed: November 9, 2006
    Publication date: March 8, 2007
    Inventors: Holger Hofmann, Hartmut Richter
  • Patent number: 7158471
    Abstract: The invention refers to a device and a method for scanning an optical data carrier by means of a main scanning beam being reflected by the data carrier and being detected by means of a photodetector, the data carrier having first and second layers to be scanned, the second layer being scanned through the first layer, light passing the first layer being shaded dependent on local properties of the first layer. An object of the invention is to propose a device having increased performance even for use with multi layer disks having a layer causing light fluctuations on a layer to be scanned, as well as a respective method. According to the invention such device is provided with means for keeping an output signal of the photodetector independent of variations of shading.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: January 2, 2007
    Assignee: Thomson Licensing
    Inventors: Holger Hofmann, Hartmut Richter
  • Publication number: 20060156942
    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: Application
    Filed: February 23, 2004
    Publication date: July 20, 2006
    Inventor: Holger Hofmann
  • Publication number: 20060072396
    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: Application
    Filed: November 3, 2003
    Publication date: April 6, 2006
    Applicant: Thomson Licensing S.A.
    Inventors: Hartmut Richter, Holger Hofmann, Stephan Knappmann, Christof Ballweg
  • Patent number: 7009165
    Abstract: An optical detection device for detecting an intensity of a light beam in a detection window and for detecting data transmitted by the light beam includes a first detection diode and an array of at least two second detection diodes in a detection window. In addition, provision is made for a first readout circuit connectable to the first detection diode, for reading out the first detection diode at a first readout speed to detect the data, and for a second readout circuit connectable to the second detection diodes, for reading out the second detection diodes at a second readout speed smaller than the first readout speed, so as to detect the intensity of the light beam.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: March 7, 2006
    Assignees: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V., Deutsche Thomson-Brandt GmbH
    Inventors: Ingo Hehemann, Werner Brockherde, Armin Kemna, Holger Hofmann, Hartmut Richter