The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 2009
Filed:
Nov. 27, 2002
Jakke Mäkelä, Turku, FI;
Janne Kari Aikio, Oulu, FI;
Sanna Aikio, Oulu, FI;
Kari Juhani Kataja, Oulu, FI;
Teemu Alajoki, Oulu, FI;
Jakke Mäkelä, Turku, FI;
Janne Kari Aikio, Oulu, FI;
Sanna Aikio, Oulu, FI;
Kari Juhani Kataja, Oulu, FI;
Teemu Alajoki, Oulu, FI;
Nokia Corporation, Espoo, FI;
Abstract
A method and miniaturizable device is described to read/write information to an optical storage medium (). A device comprises one or more light sources () bounded up with an access unit () which is arranged to be controllable to a position, in which light beams () are transmitted transversal towards an optical storage medium, and reflected light beams () are analysed by a detector element () which further informs the access unit whether to move or stand still to keep light beams in focus and on track. A device according to the invention is possible to implement in a small size and low weight due to reduced component count and thin access unit geometries. A communication device () according to the invention may be implemented to fulfil a crucial need for ultraminiature range of communication devices.