DE3723151

• Main Author: SAKAMOTO, HITOSHI, KANAGAWA, JP
• Format: Patent
• Language: English
• Published: 07.05.1992
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

A video signal processing system for processing a reproduced video signal includes a first mixing circuit for mixing reproduced video signals of a plurality of television lines with a first combination of mixing coefficients to produce a first interpolated signal, a second mixing circuit for mixing reproduced video signals of a plurality of the television lines with a second combination of mixing coefficients to produce a second interpolated signal and a comparator circuit for comparing odd and even fields of the video signal with reference odd and even fields, whereby the first and second mixing circuits are switched in response to a coincidence or non-coincidence between odd and even fields of the reproduced video signals and reference odd and even fields by the compared output from the comparator circuit. Accordingly, the change of sharpness of the reproduced video signal is reduced regardless of the above coincidence or non-coincidence.