Patents by Inventor Christoph Lenfort

Christoph Lenfort 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: 8144642
    Abstract: In order to prevent in a communication system covering at least one cell for wireless communication, the system having a line-limited or across-line wireless direct communication possibility between mobile phones that is synchronized with a base station, that mobile parts attempt to synchronize in the communication system with a continuous broadcast downlink service provided by a hybrid mobile part, it is proposed to mark the continuous broadcast downlink service of the hybrid mobile part, which assumes the role of a radio fixed part, so that mobile parts, which want to synchronize with a true radio fixed part, can detect that the service provided by the hybrid mobile part is not permanently available, or even incomplete.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: March 27, 2012
    Assignee: Gigaset Communications GmbH
    Inventors: Stefan Hülder, Dieter Kehren, Christoph Lenfort
  • Patent number: 7848344
    Abstract: During the transmission of subscriber-specific data, particularly via a transfer medium and according to a transmission principle based on time slot transmission with time slot separation, the transfer medium used by several subscribers can also be efficiently used when the data rates of the data transmitted in the transmission direction (SRI) and the reception direction (ERI) for at least one subscriber using the transmission are differently, i.e. asymmetrically distributed. To this end, the data to be transmitted for each subscriber are transmitted, as in the case of a symmetric data distribution, in at least two time slots (ZS) per a periodically returning time frame (ZR, ZR1, ZR6) and corresponding to the asymmetrical distribution of the ratio of a number of transmission data packets (SDP) to reception data packets (EDP) in a plurality n half time frame of the time frame (ZR, ZR1 ZR6) with n being greater or equal to 2 or ? N.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: December 7, 2010
    Assignee: Gigaset Communications GmbH
    Inventors: Stefan Hülder, Erich Kamperschroer, Dieter Kehren, Günter Kleindl, Christoph Lenfort, Andreas Müller, Marco van de Logt
  • Publication number: 20100130190
    Abstract: In order to prevent in a communication system covering at least one cell for wireless communication, the system having a line-limited or across-line wireless direct communication possibility between mobile phones that is synchronized with a base station, that mobile parts attempt to synchronize in the communication system with a continuous broadcast downlink service provided by a hybrid mobile part, it is proposed to mark the continuous broadcast downlink service of the hybrid mobile part, which assumes the role of a radio fixed part, so that mobile parts, which want to synchronize with a true radio fixed part, can detect that the service provided by the hybrid mobile part is not permanently available, or even incomplete.
    Type: Application
    Filed: January 29, 2008
    Publication date: May 27, 2010
    Applicant: GIGASET COMMUNICATIONS GMBH
    Inventors: Stefan Hülder, Dieter Kehren, Christoph Lenfort
  • Publication number: 20100095358
    Abstract: When registering a DECT mobile part (MT) with the base station (BS), the VoIP user ID (user) is formed from the DECT user ID (IPUI) according to a mapping rule and is used for registering an SIP account (SIPA). In addition, the SIP password (pw(AC)) is formed from the DECT authentication code (AC). Roaming or handover of DECT mobile parts (MT) in DECT systems featuring a VoIP connection can be accomplished in a simple manner by adjusting the DECT user ID (IPUI) to the SIP user ID (user (IPUI)) and adjusting the authentication code (AC) to the password (pw(AC)). The DECT mobile parts (MT) can continue to be used without change even when the same are connected to IP-oriented networks (IN), while said DECT mobile parts (MT) can be marketed for a wider range of uses.
    Type: Application
    Filed: March 3, 2008
    Publication date: April 15, 2010
    Applicant: GIGASET COMMUNICATIONS GMBH
    Inventors: Anton Kruk, Christoph Lenfort
  • Publication number: 20080144667
    Abstract: During the transmission of subscriber-specific data, particularly via a transfer medium and according to a transmission principle based on time slot transmission with time slot separation, the transfer medium used by several subscribers can also be efficiently used when the data rates of the data transmitted in the transmission direction and the reception direction for at least one subscriber using the transmission medium are differently, i.e. asymmetrically distributed. To this end, the data to be transmitted for each subscriber are transmitted, as in the case of a symmetric data distribution, in at least two time slots per a periodically returning time frame and corresponding to the asymmetrical distribution of the ratio of a number of transmission data packets to reception data packets in a plurality n half time frame of the time frame with n being greater or equal to 2 and N.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 19, 2008
    Inventors: Stefan Hulder, Erich Kamperschroer, Dieter Kehren, Gunter Kleindl, Christoph Lenfort, Andreas Muller, Marco van de Logt
  • Publication number: 20030096615
    Abstract: The invention relates to a base station to which especially more mobile components are allocated than the number of radio channels provided. The base station signals an incoming connection request to the mobile components in such a way that said station establishes a bidirectional connection to one of the mobile components after the connection request has been received, whereby the base station thus signals the incoming connection request and subsequently suppresses said request. This is sequentially repeated by means of at least one component of the mobile components. In addition, the base station can simultaneously establish a unidirectional connection to all mobile components and signal the incoming connection request immediately after the connection request has been received.
    Type: Application
    Filed: December 6, 2002
    Publication date: May 22, 2003
    Inventors: Michael Beckers, Hans-Georg Beerens, Rolf Biedermann, Christoph Lenfort, Georg Schmitz
  • Patent number: 6400949
    Abstract: In order to set up telecommunication connections more quickly between a DECT fixed part and a DECT mobile part (portable part) of a DECT system, if no items of “blind slot” information relating to the telecommunication connections to be set up are present, and to increase the probability that a connection setup takes place given these conditions, the DECT radio channels used in failed attempts at setting up the telecommunication connections are marked, at least temporarily, as unusable radio channels for further connection setup attempts.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: June 4, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ludger Bielefeld, Christoph Lenfort