Patents Assigned to Ascom AG
  • Publication number: 20070298782
    Abstract: In a method of testing a cellular network system in which setting up a communication link between two subscribers starts with a negotiation phase comprising the two steps of one of the subscribers sending a request (21) for a connection with the other subscriber to a network management and of the network management sending back an answer (23) to the subscriber, wherein the link can be established if the network management's answer (23) satisfies certain conditions, for testing the cellular network system the subscriber's request (21) and the network management's answer (23) are monitored and analyzed. Preferably, the set up process is actively terminated after the negotiation phase, before an actual link is established. Thereby, it is ensured that the use of network capacity is minimized for test links.
    Type: Application
    Filed: May 11, 2004
    Publication date: December 27, 2007
    Applicant: ASCOM AG
    Inventor: Raymond Wu
  • Publication number: 20050124350
    Abstract: In a radio communication system, where a user (8, 9), who wants to transmit data, is allocated a certain transmission capacity. It is a general goal to have an efficient resource allocation algorithm. In order to serve as much subscribers of the network as possible, the allocation of the available resources is improved by determining an utilization factor, which is some kind of measure for the exploitation of the transmission capacity allocated to a user. This is done by analysing the communication activities of the user (8) by monitoring for example directly the radio link (10) between the users terminal (8) and the corresponding basestation (4) with a monitoring device (16.4). The monitoring of the communication can also be done in other locations (16.1, 16.2, 16.3, 16.5), e.g.
    Type: Application
    Filed: March 12, 2002
    Publication date: June 9, 2005
    Applicant: ASCOM AG
    Inventor: Raymond Wu
  • Patent number: 6651041
    Abstract: A source signal (e.g. a speech sample) is processed or transmitted by a speech coder 1 and converted into a reception signal (coded speech signal). The source and reception signals are separately subjected to preprocessing 2 and psychoacoustic modelling 3. This is followed by a distance calculation 4, which assesses the similarity of the signals. Lastly, an MOS calculation is carried out in order to obtain a result comparable with human evaluation. According to the invention, in order to assess the transmission quality a spectral similarity value is determined which is based on calculation of the covariance of the spectra of the source signal and reception signal and division of the covariance by the standard deviations of the two said spectra. The method makes it possible to obtain an objective assessment (speech quality prediction) while taking the human auditory process into account.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: November 18, 2003
    Assignee: Ascom AG
    Inventor: Pero Juric
  • Patent number: 6373209
    Abstract: A stepping motor with an electrical activation circuit for electrical control of its exciter windings, is made as a driving motor and also as a braking motor with an adjustable braking action. The predefinable braking action is achieved passively without any current feed into the exciter windings. For this purpose a stipulated impedance with an adjustable duty factor can be connected to each exciter winding. One such stepping motor that is controlled in its braking action is used in an arrangement in which a strip or filament material can be transported braked from a storage.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: April 16, 2002
    Assignee: Ascom AG
    Inventors: Georges Gerber, Olivier Gaeumann, Pierre-Yves Monneron
  • Patent number: 6315462
    Abstract: A fiber Optic circuit switch comprises elements constructed entirely from a coating layer on a substrate. A procedure for production of the fiber optic circuit switch is disclosed.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: November 13, 2001
    Assignee: Ascom AG
    Inventors: Olivier Anthamatten, Cornel Marxer