Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1035/CHENP/2012 A
(19) INDIA
(22) Date of filing of Application :01/02/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : METHOD OF FILTERING A SIGNAL AND OF OBTAINING FILTER COEFFICIENTS
(51) International classification :G06T5/00
(31) Priority Document No :09305717.2
(32) Priority Date :30/07/2009
(33) Name of priority country :EPO
(86) International Application No
Filing Date
(87) International Publication No : NA
(61) Patent of Addition to Application
:NA
Number
:NA
Filing Date
(62) Divisional to Application Number
Filing Date
:PCT/IB2010/053360
:23/07/2010
:NA
:NA
(71)Name of Applicant :
1)KONINKLIJKE PHILIPS ELECTRONICS N.V.
Address of Applicant :GROENEWOUDSEWEG 1
EINDHOVEN 5621 BA NETHERLANDS
(72)Name of Inventor :
1)VAN DER VEN John Cornelius Petrus
2)TEGENBOSCH Jeroen Arnoldus Paulus
(57) Abstract :
A method of filtering a signal includes determining a class of a section (23;39) of the signal obtained as input wherein the
determination of the class includes calculating a signal section (28;41) comprising at least a component representative of a
derivative of at least a first order of the input signal section (23;39) and applying a quantisation operation to the calculated signal
section (28;41). A digital filter associated with the class is selected from a plurality of available filters. In the quantisation
operation a quantisation step is adapted to a dynamic range of the calculated signal section (28;41).
No. of Pages : 24 No. of Claims : 15
The Patent Office Journal 21/06/2013 13634