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. 02, 2007
Filed:
Oct. 19, 2001
Markus Schetelig, Waltrop, DE;
Harald Kafemann, Haltem, DE;
Markus Schetelig, Waltrop, DE;
Harald Kafemann, Haltem, DE;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to a method and a device for identifying a data packet in a data stream, in which by means of a d.c. voltage quota determining circuit () the d.c. voltage quota (dc) for a demodulated digital input signal (S) is calculated, in which a k-bit word is allocated to the input signal (S), in that for each symbol of the input signal (S) corresponding to a bit a bit value (1 or 0) is determined by a decoding circuit () as a function of the d.c. voltage quota (dc), in which the k-bit word corresponding to the input signal (S) is compared by a comparison and correlation calculating circuit () with an expected k-bit synchronization word in order to determine a correlation value (c) and in which a packet identification signal (Pd) is generated by a correlation value comparison circuit () if the correlation value (c) is greater than a correlation threshold value (c). Calculation of the d.c. voltage quota (dc) is therein repeated continually at least until a packet identification signal (Pd) indicates that a data packet is being received.