Patent ID: 7671913
Filing Date: 2010-03-02
Classification: H04N

Abstract:
1. A method for converting image data in a first format into image data in a second format, the image data in the first format having a first frame frequency and a first line frequency, the image data in the second format having a second frame frequency and a second line frequency, the method comprising the steps of: retrieving respective image data required for producing the image data in the second format of an odd field and an even field, out of moving image data in the first format from a memory to which the moving image data in the first format is written, every odd field period and every even field period in the second format, respectively; converting retrieved image data into first image data and second image data, both the first and second image data having the second line frequency; outputting the image data of the odd field in the second format by mixing image data of an odd field of the first image data and image data of an odd field of the second image data at a first predetermined mixing ratio; outputting the image data of the even field in the second format by mixing image data of an even field of the first image data and image data of an even field of the second image data at a second predetermined mixing ratio; and changing the first and second predetermined mixing ratios every field period in the second format.