公开(公告)号：EP0425528A4

公开(公告)日：1992-05-06

申请号：EP89907628

申请日：1989-07-07

Applicant: THE COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

Inventor： WARD, JOHN VICTOR ,  MCNAMEE, ROBERT CHARLES

IPC: G01R19/00 ,  G01R31/302 ,  G09G1/28 ,  G09G5/00 ,  G09G5/02 ,  G09G5/18 ,  H01J37/22 ,  H04N7/18 ,  H04N9/67

CPC classification number: H04N9/67

Abstract: A real-time signal processing circuit (2, 70, 80, 150) which includes means (12, 14, 16, 18, 20) for receiving input signals generated by a scanning device and means (10) for obtaining a synchronising signal and a first blanking signal from the receiving means (12, 14, 16, 18, 20). The circuit has an input stage (4) and a processing stage (6) which selectively generates colour output signals from the input signals, each colour output signal being derived from one or a combination of the input signals. The circuit also has an output stage (8) for including a blanking output signal in the colour output signals in response to the first blanking signal and outputting the colour signals and the synchronising signal.