Patents by Inventor Jonas Persson

Jonas Persson 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: 20040172369
    Abstract: The present invention relates to a smart card based registry database and is a database in which mobile terminal applications, SIM card based applications, PDA applications etc all can gain access, create new entries, read already stored information or update old information etc. How the information is used is up to the application, the registry only stores the information The registry comprises security such as authentication and encryption and can be used to improve existing applications.
    Type: Application
    Filed: April 26, 2004
    Publication date: September 2, 2004
    Inventor: Jonas Persson
  • Publication number: 20020058486
    Abstract: The invention relates to a method of adjusting a radio frequency signal produced by radio frequency circuitry in response to receipt of phase and amplitude control signals from digital baseband circuitry which operates to convert digital data signals into such phase and amplitude control signals. The phase and amplitude control signals are adjusted in the digital baseband circuitry in order to compensate for time alignment errors which occur in the radio frequency circuitry.
    Type: Application
    Filed: October 16, 2001
    Publication date: May 16, 2002
    Inventor: Jonas Persson
  • Publication number: 20020045429
    Abstract: A method for controlling power output of a radio frequency transmitter, wherein information relating to statistical variations in the amplitude of the information signal that is to be transmitted is used to control a gain value of the radio frequency transmitter.
    Type: Application
    Filed: October 17, 2001
    Publication date: April 18, 2002
    Inventor: Jonas Persson
  • Patent number: 6246286
    Abstract: A method and apparatus adaptively compensates for nonlinearities of a power amplifier by measuring a distortion characteristic across the power amplifier during amplification of a distortion detection signal. The distortion detection signal has a well-defined input power versus time relationship, such as ramp-up signal or ramp-down signal. Due to this well-defined relationship, the distortion characteristic can be calculated as a function of the input power level. This calculated function is then utilized to update a predistortion lookup table.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: June 12, 2001
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Jonas Persson
  • Patent number: 5906855
    Abstract: A method pertaining to the baking of products (B) in a baking oven (1) in which the products are supported by at least one rotary oven trolley (17) comprises rotating the trolley through a number of revolutions in one direction (R1) during the baking process, and thereafter reversing the direction of rotation and continuing rotation of the trolley through several revolutions in the opposite direction (R2) before again reversing the direction of rotation of the trolley. The trolley (17) keeps the same axial position in both directions of rotation. An arrangement for carrying out the method includes a drive device (20-26) for alternating rotation of the oven trolley through an equal number of revolutions in both directions during the baking process.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: May 25, 1999
    Assignee: Sveba-Dahlen AB
    Inventors: Jonas Persson, Lennart Larsson
  • Patent number: 5813393
    Abstract: The invention relates to a convection oven for processing food products, preferably, an oven (1) for baking. This is provided with heat-generating devices (4).According to the invention, the heat-generating device is a catalytic burner (4) that creates at least the main part of the heat, whereby higher efficiency is achieved, less space is needed, controllability is greater, and the process is more environmentally friendly.The invention also relates to a method for generating oven heat by means of catalytic combustion.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: September 29, 1998
    Assignee: Sveba-Dahlen AB
    Inventors: Jonas Persson, Lennart Larsson
  • Patent number: 5601013
    Abstract: An arrangement for generating steam in ovens, particularly baker's ovens, comprising a stand which carries a plurality of superposed and generally horizontally extending gutter means (8, 9) whose bottoms include a plurality of through-penetrating holes (11) which allow water to pass to underlying gutter means, and further comprising members (12) which are mounted adjacent the holes and which partially covering the holes. The members (12) have an elongated form and extend through holes (11) in at least two gutter means (8, 9) arranged one above the other, and the cross-sectional area of the members (12) in the hole region is smaller than the cross-sectional areas of the gutter means.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: February 11, 1997
    Assignee: Sveba-Dahlen AB
    Inventors: Lennart Larsson, Jonas Persson