| 摘要 |
<p>Chrominance component signals of two different types are produced such that the chrominance signals alternate within a field and between adjacent fields in order to provide an improved amount of information from which to enhance the vertical chrominance resolution of a television receiver. The appropriate chrominance structure is either provided by a special source or else a conventional source is filtered in order to produce the appropriate structure. The filter comprises two portions, one for filtering chrominance signals of a first type from a first field and one for filtering chrominance signals of a second type from the first field in order to provide interpolated signals. A specific filter structure is disclosed which may be used for either pre- or post-filtering.</p> |
