U.S. Philips Corporation

Leo Warmuth

Hartmut Hackmann

Rolf-Dieter Gutsmann

Siegfried Bohme

At least a first and a second digital signal, both in parallel form, are converted to a single serial signal and transmitted from a digital color decoder to a signal processing unit so as to avoid picture disturbances in the signal processing unit. The first digital signal is dependent on the instantaneous value of a clock frequency used in the decoder for processing a digital color picture signal, and the second digital signal is dependent on the instantaneous value of a chrominance subcarrier frequency generated in the decoder and used for color decoding.

Data transmission method

Circuit arrangement for separating the components of a PAL color television signal, in which the (digitized) u- and v-signals of the subcarrier frequency are passed through two delay lines which produce different time delays (for example 283.5 and 284 chrominance subcarrier periods): an improved cross-talk attenuation from the luminance signal to the chrominance signals in the lower sideband is then obtained.

Growing community of inventors

Hamburg, Germany

Leo Warmuth