Patents by Inventor Thomas Ahrndt

Thomas Ahrndt 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).

  • Method for dialing up a data network terminal as well as switching system with appertaining subscriber terminals
    Patent number: 6625264
    Abstract: In order to produce an accelerated connection between a subscriber terminal (1, 2) and a data network terminal (15) given a traditional switching system (3) and in order to avoid an uneconomical system load, it is provided that the subscriber terminal (1, 2) generates a special dial signal for dialing into the data network terminal (15). The switching system (3) must be fashioned in this case such that it recognizes the special dial signal and, upon its arrival, immediately initiates a forwarding to the data terminal network terminal (15).
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: September 23, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thomas Ahrndt
  • Method for measuring the operating properties of a subscriber line module for high-bit-rate data transmission
    Patent number: 6507199
    Abstract: For measuring the operating properties of a subscriber line module (1) for high bit rate data transmission, a test signal is generated within the module and supplied into a test line (6) with a defined line termination (7) who line or terminating properties are known. The echo signal arising in the test line (6) as a result of the test signal is in turn detected in the subscriber line module (1) and interpreted for evaluating the operating properties.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: January 14, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Ahrndt, Johann Neumayer
  • Arrangement for data transmission utilizing telephone network
    Patent number: 6236719
    Abstract: For modem connections via telephone lines, modems that respectively correspond to the modems of the terminal equipment side are arranged in the subscriber line circuits of the telephone switching centers as close as possible to the entry point of the subscriber line circuits. Modem communication only respectively between these pairs.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: May 22, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Ahrndt, Stephan Binde, Martin Braun, Ira Hilscher, Karl Kloppe, Hans-Werner Rudolf
  • Circuit arrangement for the subscriber-remote termination of a subscriber line in the form of a two-lead copper line for the transmission of high bit rate data signals in addition to analog telephone signals
    Patent number: 6108414
    Abstract: A circuit arrangement for a subscriber-remote termination of a subscriber line, high-bit rate data signals and analog telephone signals. The arrangement integrates exchange-side devices, a splitter and a modem into a subscriber line circuit for the subscriber line. Additionally, the exchange-side devices, splitter and modem may be protected from overvoltages by an overvoltage protection circuit contained within the subscriber line circuit.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: August 22, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Ahrndt, Stephan Binde, Martin Braun, Ira Hilscher, Karl Kloppe, Hans-Werner Rudolf