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:
Dec. 23, 2008
Filed:
Jun. 04, 1999
Hans Fiesel, Glottertal, DE;
Hans Fiesel, Glottertal, DE;
Micronas Intermetall GmbH, Freiburg, DE;
Abstract
A frequency converter for converting an intermediate-frequency television signal (s) to a low frequency by means of a mixer () which is fed at its radio-frequency signal input () with the intermediate-frequency television signal (s) via an intermediate-frequency filter () and at its local-oscillator-signal input () with a local-oscillator signal (u), the frequency of the local-oscillator signal (u) lying in the range of an adjacent picture carrier (NBT) which is defined by the channel spacing (k; k*) and the respective television standard, and which after the frequency conversion is suppressed as a converted adjacent picture carrier (NBT*), or at least attenuated to a negligible residual amplitude, by means of a high-pass selectivity skirt (HP) of a filter device ().