Patents by Inventor Stefan Kimmelmann
Stefan Kimmelmann 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: 8213278Abstract: The optical disc comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure arranged in tracks which are arranged in groups being separated each by a land section. The tracks of the groups are each arranged as a spiral, and the start of a track of a consecutive group begins at a position corresponding with the end of a track of a preceding group. A group comprises advantageously an inner track, a center track and an outer track. The optical disc comprises in a preferred embodiment a nonlinear layer with a super-resolution structure and the track pitch between neighboring tracks within a group is below the diffraction limit of a corresponding pickup for reading of data. Further, a tracking method is described which does not rely on tracking offsets to detect the inner and outer tracks of a group.Type: GrantFiled: December 11, 2009Date of Patent: July 3, 2012Assignee: Thomson LicensingInventors: Stephan Knappmann, Michael Krause, Stefan Kimmelmann
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Patent number: 8184516Abstract: A method for controlling the quality of storage media, and more specifically a method for determining if the quality of a storage medium decreases. The method includes: determining one or more quality parameters of the storage medium; and comparing one or more of the determined quality parameters with previously determined quality parameters of the storage medium stored in a memory in case the quality of the storage medium has been determined before.Type: GrantFiled: January 9, 2007Date of Patent: May 22, 2012Assignee: Thomson LicensingInventors: Stefan Kimmelmann, Hartmut Richter, Atols Kern, Xavier Lebegue, Emmanuel Daugeras
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Publication number: 20110255385Abstract: The optical disc comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure arranged in tracks which are arranged in groups being separated each by a land section. The tracks of the groups are each arranged as a spiral, and the start of a track of a consecutive group begins at a position corresponding with the end of a track of a preceding group. A group comprises advantageously an inner track, a center track and an outer track. The optical disc comprises in a preferred embodiment a nonlinear layer with a super-resolution structure and the track pitch between neighboring tracks within a group is below the diffraction limit of a corresponding pickup for reading of data. Further, a tracking method is described which does not rely on tracking offsets to detect the inner and outer tracks of a group.Type: ApplicationFiled: December 11, 2009Publication date: October 20, 2011Inventors: Stephan Knappmann, Michael Krause, Stefan Kimmelmann
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Patent number: 8027241Abstract: The optical storage medium comprises a substrate layer, and a data layer having a mark/space data structure with data arranged in tracks on the substrate layer, , wherein between neighboring tracks alternatingly a groove section or a land section without a groove is arranged. The tracks, groove sections and land sections may be arranged by providing a single spiral, two spirals, or four spirals on the optical storage medium. The optical storage medium is in particular an optical disc comprising a nonlinear layer with a super-resolution structure arranged above the data layer.Type: GrantFiled: February 10, 2009Date of Patent: September 27, 2011Assignee: Thomson LicensingInventors: Stephan Knappmann, Michael Krause, Stefan Kimmelmann
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Publication number: 20110149710Abstract: A format of a recordable optical recording medium is described. The recordable optical recording medium is designed in such a way that it has the appearance of a read-only optical recording medium for most players and recorders. Also described are a method for manufacturing the recordable optical recording medium and a method for writing to the optical recording medium. The optical recording medium has a recording area and a guide structure for tracking. The guide structure does only extend over one or a few track spirals or concentric tracks outside the recording area. For writing to this optical recording medium a further light beam falling onto the guide structure or already recorded data is used for generating a tracking error signal for a main light beam.Type: ApplicationFiled: August 24, 2009Publication date: June 23, 2011Inventors: Sergey Khruschchev, Uwe Reschke, Stefan Kimmelmann
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Publication number: 20100315932Abstract: The optical storage medium comprises a substrate layer, and a data layer having a mark/space data structure with data arranged in tracks on the substrate layer, wherein between neighboring tracks alternatingly a groove section or a land section without a groove is arranged. The tracks, groove sections and land sections may be arranged by providing a single spiral, two spirals, or four spirals on the optical storage medium. The optical storage medium is in particular an optical disc comprising a nonlinear layer with a super-resolution structure arranged above the data layer.Type: ApplicationFiled: February 10, 2009Publication date: December 16, 2010Inventors: Stephan Knappmann, Michael Krause, Stefan Kimmelmann
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Patent number: 7768894Abstract: The present invention relates to a holographic storage medium, and more specifically to a holographic storage medium with an improved servo architecture for precise positioning of a laser beam in radial, axial and tangential direction. According to the invention, a holographic storage medium includes a holographic layer for storing holograms and a servo layer with a track structure for positioning a light beam for reading and/or recording of a hologram relative to the holographic recording medium, wherein the track structure includes a pack of two or more tracks.Type: GrantFiled: February 22, 2007Date of Patent: August 3, 2010Assignee: Thomson LicensingInventors: Stefan Kimmelmann, Christof Ballweg, Uwe Reschke
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Publication number: 20100188945Abstract: In data detection 5 from a storage medium carrying data in a storage layer with a corresponding drive or apparatus, a motor moves the medium and a motor control unit controls the position of the medium using a position signal. A reading unit reads the data from the medium and generates a readout signal. By using a sampling control signal, a data detection unit derives discrete data from the readout signal. According to the invention the data detection unit of the apparatus is coupled to the motor control unit. In particular, the sampling control signal is derived from the position signal, such that the value of the sampling control signal univocally depends on the position of the motor moving the medium.Type: ApplicationFiled: August 20, 2008Publication date: July 29, 2010Inventors: Christof Ballweg, Stefan Kimmelmann
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Publication number: 20090180369Abstract: The present invention relates to a method for controlling the quality of storage media, and more specifically to a method for determining if the quality of a storage medium decreases. A method according to the invention has the steps of: determining one or more quality parameters of the storage medium; and comparing one or more of the determined quality parameters with previously determined quality parameters of the storage medium stored in a memory in case the quality of the storage medium has been determined before.Type: ApplicationFiled: January 9, 2007Publication date: July 16, 2009Inventors: Stefan Kimmelmann, Hartmut Richter, Alois Kern, Xavier Lebegue, Emmanuel Daugeras
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Patent number: 7560889Abstract: The invention relates to a method and an arrangement for a digital servo system with moving average filter (Amovavf 1, Amovavf 2),which is used as an input filter for a digital signal processor of the servo system to shorten processing delay, which improves the stability of the control loop and/or allow a fast servo signal processing, which improve the overall servo signal control performance. Said input filter provides average values of samples provided from an analog digital converter (ADC) at a frequency corresponding to a sample frequency (fADC) of the analog digital converter (ADC) and has an adjustable filter length (n), which is determined according to a quality of detector signals indicating a deviation from a target of servo means of the servo system. The invention is e.g. applicable for a fast digital servo system in an optical disc drive.Type: GrantFiled: June 23, 2006Date of Patent: July 14, 2009Assignee: Thomson LicensingInventor: Stefan Kimmelmann
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Patent number: 7336566Abstract: The track jumping of a scanner on optical storage media in which information items are stored on groove and land tracks or which have not yet been written to is intended to be made possible in a reliable manner. For this purpose, firstly a fictitious track type is defined for a regulating circuit, which regulates the position of the scanner. The regulating circuit is then closed on the basis of the track type defined and a track scanning signal. The reaction of the scanner to the closing is detected in order to obtain from this an item of information about the track type. This method is also advantageous, in principle, for closing the track following regulation in information carriers having relatively high storage densities.Type: GrantFiled: December 10, 2001Date of Patent: February 26, 2008Assignee: Thomson LicensingInventors: Heinz-Jörg Schröder, Christian Büchler, Stefan Kimmelmann
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Publication number: 20070201340Abstract: The present invention relates to a holographic storage medium, and more specifically to a holographic storage medium with an improved servo architecture for precise positioning of a laser beam in radial, axial and tangential direction. According to the invention, a holographic storage medium includes a holographic layer for storing holograms and a servo layer with a track structure for positioning a light beam for reading and/or recording of a hologram relative to the holographic recording medium, wherein the track structure includes a pack of two or more tracks.Type: ApplicationFiled: February 22, 2007Publication date: August 30, 2007Inventors: Stefan Kimmelmann, Christof Ballweg, Uwe Reschke
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Patent number: 7206263Abstract: Track jumping on optical storage media whose address information items invalidate the track error signal at time intervals is intended to be configured more securely and more reliably. For this purpose, at the end of a coarse jump, one or more correction jumps are carried out if the optical scanner is not presently sweeping over an address information area and the track change frequency of the tracks crossed by the scanner falls below a predetermined value.Type: GrantFiled: December 10, 2001Date of Patent: April 17, 2007Assignee: Thomson LicensingInventors: Christian Büchler, Martin Kuner, Stefan Kimmelmann
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Publication number: 20070001639Abstract: The invention relates to a method and an arrangement for a digital servo system with pre-processing old control states to shorten processing delay, which improves the stability of the control loop and/or allow a fast servo signal processing, which improve the overall servo control performance. The digital signal processor of the servo system stores previously calculated control filter states for a calculation of a digital signal processor output value from a current input value and provides the digital signal processor output value before calculating control filter states based on said current input value. The invention is e.g. applicable for a fast digital servo system in an optical disc drive.Type: ApplicationFiled: May 31, 2006Publication date: January 4, 2007Inventor: Stefan Kimmelmann
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Publication number: 20070001640Abstract: The invention relates to a method and an arrangement for a digital servo system with moving average filter, which is used as an input filter for a digital signal processor of the servo system to shorten processing delay, which improves the stability of the control loop and/or allow a fast servo signal processing, which improve the overall servo control performance. Said input filter provides average values of samples provided from an analog digital converter at a frequeny corresponding to a sample frequency of the analog digital converter and has an adjustable filter length, which is determined according to a quality of detector signals indicating a deviation from a target of servo means of the servo system. The invention is e.g. applicable for a fast digital servo system in an optical disc drive.Type: ApplicationFiled: June 23, 2006Publication date: January 4, 2007Inventor: Stefan Kimmelmann
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Patent number: 6768520Abstract: In computer monitors having a picture tube, it may be seen that a small white picture area is displayed with the same white value as a large white picture area. If it were intended to achieve the same result for a television receiver with a picture tube, a voltage supply is necessary in which the power is permitted to fluctuate between 60 and 300 watts given a stable output voltage. On account of the lower luminous efficiency, this effect would have considerably intensified repercussions on the power consumption of plasma screens. The invention is based on the object of providing a simplified method for regulating the picture power in a television receiver. The method according to the invention is distinguished by the following steps. The power consumption of the picture power is obtained by the video voltage R, G, B. The video voltage is converted into an information item which is then a measure of the picture power. This information item is subsequently fed to two regulating loops.Type: GrantFiled: April 20, 2000Date of Patent: July 27, 2004Assignee: Thomson Licensing S.A.Inventors: Gérard Rilly, Hossein Ahmari, Hans Guenter Bicheler, Stefan Kimmelmann
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Publication number: 20040057354Abstract: Track jumping on optical storage media whose address information items invalidate the track error signal (TE) at time intervals is intended to be configured more securely and more reliably. For this purpose, at the end of a coarse jump, one or more correction jumps are carried out if the optical scanner (1) is not presently sweeping over an address information area and the track change frequency of the tracks crossed by the scanner (1) falls below a predetermined value.Type: ApplicationFiled: June 12, 2003Publication date: March 25, 2004Inventors: Christian Buchler, Martin Kuner, Stefan Kimmelmann
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Publication number: 20040052182Abstract: The track jumping of a scanner (1) on optical storage media in which information items are stored on groove and land tracks or which have not yet been written to is intended to be made possible in a reliable manner. For this purpose, firstly a fictitious track type is defined for a regulating circuit (1, 2, 7, 8, 9, 10), which regulates the position of the scanner (1). The regulating circuit (1, 2, 7, 8, 9, 10) is then closed on the basis of the track type defined and a track scanning signal. The reaction of the scanner (1) to the closing is detected in order to obtain from this an item of information about the track type. This method is also advantageous, in principle, for closing the track following regulation in information carriers having relatively high storage densities.Type: ApplicationFiled: June 11, 2003Publication date: March 18, 2004Inventors: Heinz-Jorg Schroder, Christian Buchler, Stefan Kimmelmann