公开(公告)号：GB2186150A

公开(公告)日：1987-08-05

申请号：GB8702141

申请日：1987-01-30

Applicant: RCA CORP

Inventor： STROLLE CHRISTOPHER HUGH ,  REITMEIER GLENN ARTHUR

IPC: H04N7/015 ,  H04N9/80 ,  H04N11/24 ,  H04N11/02

Abstract: A progressively scanned video signal is encoded into temporal sum and difference components for transmission. The sum signal is temporally filtered, decimated and time expended to be compatible with interlaced receivers. The difference signal, also temporally filtered, decimated and time expanded, is conveyed via single or separate channels with the sum signal to a progressive scan receiver for reconstitution of the original progressive scan signal. Modified quadrature amplitude modulation is used to convey the sum and difference signals in a common channel.

公开(公告)号：IT8219283D0

公开(公告)日：1982-01-25

申请号：IT1928382

申请日：1982-01-25

Applicant: RCA CORP

Inventor： CHRISTOPHER LAUREN ANN ,  REITMEIER GLENN ARTHUR ,  SMITH TERRENCE RAYMOND ,  STROLLE CHRISTOPHER HUGH

IPC: G06F1/02 ,  G06F1/03 ,  G06F7/548 ,  G06F12/02 ,  G06F17/17 ,  G06G7/26 ,  G09G5/39 ,  G11C7/00 ,  G11C8/04 ,  G11C8/12 ,  G11C8/16 ,  H03H17/02 ,  H03H17/06 ,  H04N9/78 ,  G11C