Patent ID: 6535300
Filing Date: 2003-03-18
Classification: H04N

Abstract:
A picture signal processing apparatus comprising:reception means for receiving a picture signal; image conversion means for converting the picture signal received by the reception means into image data using a selected mode of conversion; odd-number field determining means for directly determining whether there is an odd-number field signal in the picture signal received by the reception means; even-number field determining means for directly determining whether there is an even-number field signal in the picture signal received by the reception means; and conversion mode changing means for automatically determining the selected mode of conversion to be used by the image conversion means based on the determinations made by the odd-number field determining means and the even-number field determining means, wherein the odd-number field determining means and the even-number field determining means determines the presence of the odd-number field signal and the even-number field signal in the picture signal based on a waiting of a predetermined period of time which comprises an integer number of times of input cycle of one of the odd-number field signal and the even-number field signal.