Patents by Inventor Mika Erola

Mika Erola 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 conveying control commands for SIM card from external apparatus to SIM card
    Patent number: 6092133
    Abstract: The method according to the invention can be used for conveying low-level SIM card commands from an external apparatus (12) of a mobile station (1) to a SIM card (2) connected to the mobile station. The invention is based on locking the SIM card (2) solely for a particular control element (10) for the duration of the exchange of low-level commands. The mobile station according to the invention advantageously includes two SIM card control elements (4, 10) the first of which (4) is intended for executing commands issued by internal blocks of the mobile station and the second of which (10) is intended for conveying low-level commands from an external apparatus (12) connected to the mobile station. Said first control element (4) receives high-level commands from the various blocks (6) of the mobile station and conveys to the SIM card (2) the corresponding low-level command sequences.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: July 18, 2000
    Assignee: Nokia Mobile Phones Ltd
    Inventors: Mika Erola, Jukka-Pekka Honkanen, Harri Halminen