Patent ID: 7082161
Filing Date: 2006-07-25
Classification: H04N

Abstract:
1. A television/cinema scheme identification apparatus for a picture signal having a field frequency, for identifying a pull-down scheme when a picture source of the picture signal has been subjected to conversion processing, the identification apparatus comprising: a signal processing section which acquires a correlation identification output obtained by identifying the presence or absence of correction of a pattern on a field by field basis by a plurality of continuous fields, and outputs an acquired output as a field correlation pattern; a first pull-down identifying section which compares the field collection pattern with a first comparison pattern, and, as a result of the comparison, acquires an identification output of a first type pull-down scheme; and a second pull-down identifying section which compares the field correlation pattern with a second comparison pattern, and as a result of the comparison, acquires an identification output of a second type pull-down scheme, wherein the field correlation pattern is identical in data length to the first and second comparison patterns with which the field correlation pattern is compared, and an appearance pattern of correlation identification for the first type pull-down scheme and an appearance pattern of correlation identification for the second type pull-down scheme each have a data length such that a mutually exclusive pattern relationship is established.