公开(公告)号：WO1989009527A1

公开(公告)日：1989-10-05

申请号：PCT/US1989001143

申请日：1989-03-20

Applicant: SCIENTIFIC ATLANTA, INC.

Inventor： SCIENTIFIC ATLANTA, INC. ,  RHODES, Charles, W.

IPC: H04N05/455

CPC classification number: H04N11/08 ,  H04N7/083

Abstract: In a Multiplexed Analog Component (MAC) color television transmission system in which the MAC signal is to be converted at the receiver to a composite color television signal having a 227.5 fH color subcarrier, frequency-generation equipment required at the receiver is simplified, and bandwidth is extended, by selecting the various frequencies in accordance with the following relationship: f0 = 3f1 = 3f2 = 2f4 = 1365k fH where f0 is the master clock frequency generated by a master clock (401), f1 is the luminance sampling frequency, and f2 is the chrominance sampling frequency generated by a frequency divider circuit (403); f4 is the MAC sampling frequency generated by a second frequency divider circuit (402), fH is the horizontal line frequency, and k is a positive integer greater than 2, f3 is the data clock frequency which is independent of k and remains fixed at its present value.