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:
Jun. 28, 1994
Filed:
May. 03, 1993
Bruce J Penney, Beaverton, OR (US);
Tektronix, Inc., Wilsonville, OR (US);
Abstract
A mulltiformat television switcher adds an up-converter, a down-converter and an auxiliary selector to an existing master control switcher to provide the ability to provide both a standard format output video signal (NTSC, PAL, SECAM, etc.) and a HDTV format output video signal corresponding to a selected input video signal from a plurality of input video sources which include both standard and HDTV formats. The master control switcher provides a selected one of the standard format input video signals to a standard format input of the auxiliary selector and to the up-converter, and provides a control signal to the auxiliary selector. The HDTV format input video signals and the HDTV format video signal output from the up-converter are applied to HDTV inputs of the auxiliary selector. The auxiliary selector provides an HDTV format output video signal, selected from the HDTV inputs, and a corresponding standard format output video signal, selected from the standard format inputs, according to the video signal source selected by an operator at the master control switcher. A down-converter converts the HDTV format output video signal to a standard format video signal that is applied to other standard format inputs of the auxiliary selector. When the operator selects the video signal source, it is either up-converted or down-converted as necessary and output in both formats by the auxiliary selector.