Patents by Inventor Stefan Valentin

Stefan Valentin 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).

  • Publication number: 20240279762
    Abstract: A method for producing a rolling bearing component includes forming the rolling bearing component from a 100CrMnSi6-4 or 100Cr6 rolling bearing steel, heating the rolling bearing component, quenching the rolling bearing component, heating the rolling bearing component and holding the rolling bearing component. The rolling bearing component to heated to an austenitizing temperature to form an austenitic microstructure. The rolling bearing component is quenched in a hot salt bath to a first temperature of between 170° C. and 200° C. such that there is a pearlitic or ferritic microstructure in a core region of the rolling bearing component. The rolling bearing component is heated to a second temperature between 220° C. and 280° C. The rolling bearing component is held at the second temperature for a holding time of at least 7 hours such that there is a predominantly bainitic microstructure formed on a surface of the rolling bearing component.
    Type: Application
    Filed: May 10, 2022
    Publication date: August 22, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Johannes Moeller, Werner Trojahn, Stefan Valentin, Markus Dinkel
  • Patent number: 11202099
    Abstract: A system and method for improving quality of encoding and decoding a panoramic video. The panoramic video comprises a sequence of encoded picture frames. In panoramic video picture frames are mapped on a spherical viewing area. In the method the projection center of the encoded frame is transformed before encoding. In the decoding phase the projection center is transformed back accordingly after decoding the frame.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: December 14, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Maxim Borisovitch Sychev, Alexis Decurninge, Dimitrios Tsilimantos, Alexander Alexandrovich Karabutov, Stefan Valentin, Sergey Yurievich Ikonin
  • Patent number: 11109022
    Abstract: The application relates to a method and a transmitter communication device configured to provide video data to a receiver communication device, wherein the video data comprises one or more groups of frames and each group of frames comprises a plurality of temporally successive frames. The method comprises processing a first frame of a current, i.e. currently processed group of frames using a first modulation and coding scheme of a plurality of modulation and coding schemes and processing a second frame of the current group of frames using a second modulation and coding scheme of the plurality of modulation and coding schemes, and further selecting the second modulation and coding scheme of the plurality of modulation and coding schemes on the basis of a temporal position of the second frame relative to the first frame of the current group of frames.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: August 31, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Dimitrios Tsilimantos, Zhijun Chao, Afef Feki, Amaya Nogales Gomez, Xianwen Shi, Haifeng Tang, Stefan Valentin
  • Patent number: 10999204
    Abstract: Traffic profiling in real time within a video streaming session is described. Multiple data packet flows at a lower layer of the OSI model are observed. A data packet flow pattern is obtained for each observed flow, and each obtained pattern is compared to a pre-defined characteristic streaming pattern. From the observed flows, any data packet flow that has its data packet flow pattern close to the pre-defined characteristic streaming pattern is selected as a video streaming flow. A buffer state of the video streaming flow is identified amongst a filling state, a steady state, and a depletion state, by observing a slope of accumulated data over time. Eventually, multimedia-related information of the selected video streaming flow is provided based on its data packet flow pattern.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: May 4, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Dimitrios Tsilimantos, Stefan Valentin, Theodoros Karagkioules, Amaya Nogales Gomez, Xianwen Shi, Zhijun Chao
  • Patent number: 10680705
    Abstract: The disclosure relates to a network entity for selecting a communication relay from a plurality of communication relays within the service area of a base station covering a plurality of geographic positions, wherein each communication relay is able to retransmit a communication between the base station and a user equipment, wherein the network entity comprises a divider configured to divide the service area into a plurality of different regions based on an attenuation measure at each geographic position, a determiner configured to determine for each pair of regions a spatial isolation measure based on the attenuation measures at the geographic positions within the regions, and a selector configured to select a communication relay based on the spatial isolation measures associated with the geographic position of each communication relay.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: June 9, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Afef Feki, Melissa Duarte Gelvez, Stefan Valentin, Luca Rose
  • Publication number: 20200145695
    Abstract: A system and method for providing motion compensation in decoding of a panoramic video. The panoramic video comprises a sequence encoded of image frames. Using inter frame prediction an image frame of a video is expressed in terms of at least one of neighboring image frames. In panoramic video image frames are mapped on a spherical viewing area. In the method the motion caused by camera movements is compensated by computing a difference between a reference frame and a current frame. The computed difference is then used when reconstructing the current frame, which may be placed to an image buffer and used as a reference frame for other frames.
    Type: Application
    Filed: January 3, 2020
    Publication date: May 7, 2020
    Inventors: Maxim Borisovitch SYCHEV, Alexis DECURNINGE, Dimitrios TSILIMANTOS, Alexander Alexandrovich KARABUTOV, Sergey Yurievich IKONIN, Stefan VALENTIN, Qingpeng XIE
  • Publication number: 20200145694
    Abstract: A system and method for improving quality of encoding and decoding a panoramic video. The panoramic video comprises a sequence encoded of picture frames. In panoramic video picture frames are mapped on a spherical viewing area. In the method the projection center of the encoded frame is transformed before encoding. In the decoding phase the projection center is transformed back accordingly after decoding the frame.
    Type: Application
    Filed: January 3, 2020
    Publication date: May 7, 2020
    Inventors: Maxim Borisovitch SYCHEV, Alexis DECURNINGE, Dimitrios TSILIMANTOS, Alexander Alexandrovich KARABUTOV, Stefan VALENTIN, Sergey Yurievich IKONIN
  • Publication number: 20200112721
    Abstract: The application relates to a method and a transmitter communication device configured to provide video data to a receiver communication device, wherein the video data comprises one or more groups of frames and each group of frames comprises a plurality of temporally successive frames. The method comprises processing a first frame of a current, i.e. currently processed group of frames using a first modulation and coding scheme of a plurality of modulation and coding schemes and processing a second frame of the current group of frames using a second modulation and coding scheme of the plurality of modulation and coding schemes, and further selecting the second modulation and coding scheme of the plurality of modulation and coding schemes on the basis of a temporal position of the second frame relative to the first frame of the current group of frames.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 9, 2020
    Inventors: Dimitrios TSILIMANTOS, Zhijun CHAO, Afef FEKI, Amaya NOGALES GOMEZ, Xianwen SHI, Haifeng TANG, Stefan VALENTIN
  • Publication number: 20200092213
    Abstract: The present invention relates to traffic profiling in real time within a video streaming session. First, multiple data packet flows at a lower layer of the OSI model are observed. A data packet flow pattern is obtained for each observed flow, and each obtained pattern is compared to a pre-defined characteristic streaming pattern. From the observed flows, any data packet flow that has its data packet flow pattern close to the pre-defined characteristic streaming pattern is selected as a video streaming flow. A buffer state of the video streaming flow is identified amongst a filling state, a steady state, and a depletion state, by observing a slope of accumulated data over time. Eventually, multimedia-related information of the selected video streaming flow is provided based on its data packet flow pattern.
    Type: Application
    Filed: November 19, 2019
    Publication date: March 19, 2020
    Inventors: Dimitrios TSILIMANTOS, Stefan VALENTIN, Theodoros KARAGKIOULES, Amaya NOGALES GOMEZ, Xianwen SHI, Zhijun CHAO
  • Publication number: 20180278325
    Abstract: The disclosure relates to a network entity for selecting a communication relay from a plurality of communication relays within the service area of a base station covering a plurality of geographic positions, wherein each communication relay is able to retransmit a communication between the base station and a user equipment, wherein the network entity comprises a divider configured to divide the service area into a plurality of different regions based on an attenuation measure at each geographic position, a determiner configured to determine for each pair of regions a spatial isolation measure based on the attenuation measures at the geographic positions within the regions, and a selector configured to select a communication relay based on the spatial isolation measures associated with the geographic position of each communication relay.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 27, 2018
    Inventors: Afef FEKI, Melissa Duarte GELVEZ, Stefan VALENTIN, Luca ROSE
  • Patent number: 9967300
    Abstract: Embodiments of the claimed subject matter provide a method and apparatus for scheduling adaptive bit rate streams. Some embodiments of the method include accessing, at user equipment, a first bit rate selected from a plurality of bit rates used to encode a portion of an adaptive multimedia stream, a size of the portion of the adaptive multimedia stream, and a play out duration of the portion of the adaptive multimedia stream. Some embodiments of the method also include providing, from the user equipment, indications of the first bit rate, the size, and the play out duration.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: May 8, 2018
    Assignee: Alcatel Lucent
    Inventors: Edward Grinshpun, David Faucher, Stefan Valentin
  • Patent number: 9389301
    Abstract: Various embodiments provide a method and apparatus for determining tag location by using one or more estimated channel responses (CR) that characterize the wireless channel between the tag and one or more respective anchors. In particular, a tracking server in communication with the anchor(s) determines the tag's location based on a comparison of the estimated CR(s) with a set of stored CRs associated with the anchor(s).
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: July 12, 2016
    Assignee: Alcatel Lucent
    Inventors: Howard Huang, Dragan Samardzija, Irwin Kennedy, Stefan Valentin, Dmitry Chizhik, Gregory Wright, Sarabjot Singh
  • Patent number: 9271297
    Abstract: Embodiments relate to apparatuses, methods and computer programs for a mobile transceiver, a base station transceiver and a data server. A mobile transceiver apparatus comprises means for extracting context information from an application being run on a mobile transceiver, context information from an operation system being run on the mobile transceiver, or context information from hardware drivers or hardware of the mobile transceiver, the context information comprising information on a state of the application and/or information on a state of the mobile transceiver. The apparatus further comprises means for communicating data packets with the base station transceiver, wherein the data packets comprise payload data packets and control data packets, and wherein the means for communicating is operable to communicate payload data packets associated with the application with a data server through the base station transceiver.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: February 23, 2016
    Assignee: Alcatel Lucent
    Inventors: Stefan Valentin, Matthias Kaschub, Magnus Proebster, Thomas Werthmann, Christian Muller
  • Publication number: 20160014799
    Abstract: The invention concerns a method for scheduling of radio resources to user terminals (UE11-UE24) of different network operators using a scheduling unit, wherein the scheduling unit determines weight parameters for the user terminals (UE11-UE24) of the different network operators for scheduling of the radio resources based on a predefined distribution of radio resources among the different network operators (si) and at least one data throughput per user terminal in a time interval (Tij), and the scheduling unit schedules the radio resources to the user terminals (UE11-UE24) of the different network operators based on said weight parameters, and a base station therefor.
    Type: Application
    Filed: January 18, 2013
    Publication date: January 14, 2016
    Inventors: Osman Aydin, Stefan Valentin
  • Patent number: 9231746
    Abstract: The present invention refers to a method and a transmitter element (35) for transmitting channel information (CI) for link adaptation of a radio channel (33) in a wireless network (11). In order to allow for reliable and efficient transfer of the channel information (CI) and to adapt the detection probability to the importance of the CI as well as to the channel stability, it is suggested that the method comprises encoding (19) the channel information (CI) using multi-level coding, said multi-level coding (19) comprising combining multiple bit sequences (c1, c2, . . . , cn, d), each bit sequence (c1, c2, . . . , cn, d) corresponding to a coding level (1, . . . , n) of said multilevel coding (19) and assigning (37) one of said coding levels (1, . . . , n) to at least a part (ci1, ci2) of the channel information (CI) such that at least a part (ci1, ci2) of the channel information (CI) corresponds to the bit sequence (c1, c2, . . . , cn) of that coding level (1, . . . , n).
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: January 5, 2016
    Assignee: Alcatel Lucent
    Inventors: Stefan Valentin, Thorsten Wild, Andre F. D. Santos
  • Publication number: 20150247915
    Abstract: Various embodiments provide a method and apparatus for determining tag location by using one or more estimated channel responses (CR) that characterize the wireless channel between the tag and one or more respective anchors. In particular, a tracking server in communication with the anchor(s) determines the tag's location based on a comparison of the estimated CR(s) with a set of stored CRs associated with the anchor(s).
    Type: Application
    Filed: February 28, 2014
    Publication date: September 3, 2015
    Applicants: Alcatel-Lucent USA Inc., Alcatel Lucent
    Inventors: Howard Huang, Dragan Samardzija, Irwin Kennedy, Stefan Valentin, Dmitry Chizhik, Gregory Wright, Sarabjot Singh
  • Publication number: 20140161050
    Abstract: Embodiments of the claimed subject matter provide a method and apparatus for scheduling adaptive bit rate streams. Some embodiments of the method include accessing, at user equipment, a first bit rate selected from a plurality of bit rates used to encode a portion of an adaptive multimedia stream, a size of the portion of the adaptive multimedia stream, and a play out duration of the portion of the adaptive multimedia stream. Some embodiments of the method also include providing, from the user equipment, indications of the first bit rate, the size, and the play out duration.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: ALCATEL-LUCENT USA, INC.
    Inventors: EDWARD GRINSHPUN, David Faucher, Stefan Valentin
  • Publication number: 20140106770
    Abstract: Embodiments relate to apparatuses, methods and computer programs for a mobile transceiver, a base station transceiver and a data server. A mobile transceiver apparatus (10) comprises means for extracting (12) context information from an application being run on a mobile transceiver (100), context information from an operation system being run on the mobile transceiver (100), or context information from hardware drivers or hardware of the mobile transceiver (100), the context information comprising information on a state of the application and/or information on a state of the mobile transceiver (100). The apparatus (10) further comprises means for communicating (14) data packets with the base station transceiver (200), wherein the data packets comprise payload data packets and control data packets, and wherein the means for communicating (14) is operable to communicate payload data packets associated with the application with a data server (300) through the base station transceiver (200).
    Type: Application
    Filed: June 1, 2012
    Publication date: April 17, 2014
    Applicant: Alcatel Lucent
    Inventors: Stefan Valentin, Matthias Kaschub, Magnus Proebster, Thomas Werthmann, Christian Muller
  • Publication number: 20140098778
    Abstract: A concept for scheduling in a communication system (500). The communication system comprises a mobile transceiver (100), a base station transceiver (200) and a data server (300). A scheduling concept at the base station transceiver (200) is based on context information determined by the mobile transceiver (100), the base station transceiver (200) and/or the data server (300).
    Type: Application
    Filed: May 31, 2012
    Publication date: April 10, 2014
    Applicant: ALCATEL LUCENT
    Inventors: Stefan Valentin, Magnus Proebster, Matthias Kaschub
  • Publication number: 20130308623
    Abstract: The present invention refers to methods and apparatus for simultaneous transmission and reception of a data sequence (d) and channel information (CI) for link adaptation. In order to provide a method, a transmitter element (34), and a receiver element (38) that consume less transmission resources and improve the overall spectral efficiency of the network, a method and a transmitter element (34) for simultaneous transmission of a data sequence (d) and channel information (CI) for link adaptation over a radio channel (29) of a wireless network (11) is suggested, the method A comprising encoding said data sequence to a codeword (c) using a channel encoder (19) and transmitting (21) the codeword (c) over the radio channel (29), wherein the method further comprises including the channel information (CI) into the codeword (c) using said channel encoder (19), the codeword (c) comprising both the data sequence (d) and the channel information (CI).
    Type: Application
    Filed: December 16, 2011
    Publication date: November 21, 2013
    Applicant: ALCATEL LUCENT
    Inventors: Andre F.D. Santos, Thorsten Wild, Stefan Valentin