| 摘要 |
1507628 Television DE TELECOMMUNICATIONS S.A. 22 June 1976 [3 July 1975] 25816/76 Heading H4F A method of transmitting differential P.C.M. video signals wherein each frame is scanned by means of two consecutive fields, each field comprising lines of the same parity i.e. odd or even lines, and each frame dot being represented by a word of n binary digits, comprises transmitting one field every three fields, storing a field of each parity at the receiving equipment, systematically replacing a stored field by the next transmitted field of the same parity, and forming intermediate fields by interpolating between the stored fields. The method includes the formation at the receiver of a pseudo-field I n with opposite parity to a stored field T n by interpolating between T n and the stored field T n+3 or T n-3 and generating an intermediate field T n+1 or T n-1 from I n and T n+3 or T n-3 , respectively. |
