公开(公告)号：CA2191632A1

公开(公告)日：1997-08-14

申请号：CA2191632

申请日：1996-11-29

Applicant: IBM

Inventor： COMBS JAMES LEE ,  CRUMP DWAYNE THOMAS ,  HURD JONATHAN JAMES ,  PANCOAST STEPHEN TAYLOR ,  WORTHINGTON THOMAS K

IPC: H04N5/45 ,  H04N7/08 ,  G06T1/00 ,  H04N5/06

Abstract: Disclosed is a video processor for processing first and second analog composite video signals and producing an output analog video signal. The video processor includes a video decoder and scaler for converting the second analog composite video signal to a reduced digital video signal. The video processor also includes a video encoder for converting the reduced digital video to a third analog composite video signal. Synchronization circuits are included for producing synchronization information for synchronizing the third analog composite video signal with the first analog composite video signal. The video processor further includes a composite video multiplexer for combining the first analog composite video signal with the third analog composite signal to produce the output analog composite video signal which is comprised of a portion of the first analog video signal and a portion of the third analog video signal.

公开(公告)号：CA2191631A1

公开(公告)日：1997-08-14

申请号：CA2191631

申请日：1996-11-29

Applicant: IBM

Inventor： CRUMP DWAYNE THOMAS ,  HURD JONATHAN JAMES ,  PANCOAST STEPHEN TAYLOR ,  WORTHINGTON THOMAS K

IPC: G06F3/033 ,  H04N5/44 ,  H04N7/16 ,  H04N5/45 ,  G06T1/00

Abstract: Disclosed is a method and apparatus for processing two analog composite vide o signals to be displayed to a human observer. The system includes at least a first an d a second video source for generating first and second analog composite video signals respec tively, and a selector coupled to the first and second video sources. The selector is operative to supply either the first or second analog composite video signal to one input of a video processor an d independently and simultaneously supply either the first or second analog composite video signal to a second input of the video processor. The video processor is operative under contro l of a CPU to generate an output analog composite video signal comprised of a portion of t he analog composite video signal supplied to the video processor's first input and a portion of the analog composite video signal supplied to the video processor's second input.