Device for converting the field frequency and line number in a high definition television receiver

Abstract

Abstract The present invention relates to a field-frequency and line-number conversion device for a high-definition television receiver able to receive as input video signals corresponding to different standards and to yield as output a high-definition type signal at a desired field frequency and over a desired number of lines, the said device being associated with a pass-band reducing decoder processing the 625/2:1/50 Hz type high-definition input video signals. <??>It comprises:   - at least one first memory (5) for storing the fields of the video signal being input at a frequency dependent on the field frequency of the input signal, this memory being read at the field frequency desired as output;   - a pass-band reducing decoder (6) connected to the memory and delivering separately as output the even and odd fields of the high-definition type video signal decompressed at the field frequency desired as output, and   - a video processing circuit (7) connected respectively to the outputs of the pass-band reducing decoder able to deliver a video display signal at the desired field frequency and with the desired line number. <IMAGE>

Inventors

• 👤 David Gillies
• 👤 Jean-Yves Moraillon

Bibliographic Details