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EP0105072A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Digital filter integrated circuit for the chrominance channel of a colour television apparatus

Assignee: TDK Micronas GmbH
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Filing: 1982-10-06
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Granted: —
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Expires: 2002-10-06
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Abstract

Abstract Translated from German Das Digitalfilter (D) dient der Kompensation der vom Durchlaßbereich der Zwischenfrequenzstufen bewirkten Amplitudenabsenkung des Referenzträgers (fc) und damit zur Erzielung eines im Bereich der Chrominanzkanal-Bandbreite flachen Verlaufs von dessen Durchlaßkurve. Das Digitalfilter (D) hat die Transferfunktion Y(z) (X(z) = T(z) = 1/a + z<->¹ + z<->²/a, wobei mit a eine vom Hersteller des Farbfernsehgeräts vorgebbare, in dessen Betrieb jedoch konstante Zahl bezeichnet ist. The digital filter (D) is used to compensate for the reduction in amplitude of the reference carrier (fc) brought about by the pass band of the intermediate frequency stages and thus to achieve a flat profile of its pass curve in the range of the chrominance channel bandwidth. The digital filter (D) has the transfer function Y (z) (X (z) = T (z) = 1 / a + z <-> 1 + z <-> 2 / a, with a being a predefinable by the manufacturer of the color television set , in the operation of which, however, a constant number is designated.

Inventors

  • 👤 Peotr H. Baker

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 13:02
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/646; H04N5/00; H04N5/14; H04N5/21; H04N5/211; H04N5/44

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