The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2007
Filed:
Feb. 04, 2004
Stefan Lundberg, Lund, SE;
Gunnar Dahlgren, Gothenburg, SE;
Stefan Lundberg, Lund, SE;
Gunnar Dahlgren, Gothenburg, SE;
Axis, AB, Lund, SE;
Abstract
Method and apparatus for combining a first video signal and a second video signal. The method comprising the act of replacing data in the second video signal with corresponding, in respect of a position within an image, data from the first video signal when said data in the second video signal represent a predefined repetitive pattern. The apparatus comprising a first input for input of the first video signal; a second input for input of the second video signal; an output for output of a third video signal; a keying-pattern detector connected to said second input for detecting a predefined repetitive pattern, wherein said keying-pattern detector comprises a means for receiving and/or storing a representation of the predefined repetitive pattern, and an output that is arranged to provide a signal indicating whether said predefined repetitive pattern is detected or not; and a video switch connected to said first input, said second input, said output and said output of the keying-pattern detector for continuously selecting a video signal from one of the first and second input to be represented in a third video signal, said selection being controlled by a signal from the output of the keying-pattern detector.