Patent ID: 8780989
Filing Date: 2014-07-15
Classification: H04N

Abstract:
1. A moving-picture coding device that divides a moving-picture signal comprised of a plurality of fields into a plurality of blocks and selects a coded area prediction in a current field and inter-field motion compensation prediction by block units, the moving-picture coding device comprising: a memory; and a processor that executes a procedure in the memory, the procedure including: a forced intra block line determining process that determines a block line position in which coding is forcedly performed by the coded area prediction in the current field; an intra selecting process that forcedly selects intra coding with respect to the block line position determined by the forced intra block line determining process; a vector limit block line determining process that determines a block line position forcedly limiting a reference field and a reference area of the inter-field motion compensation prediction by an arbitrary block line of the current field; a vector limit process that forcedly limits the reference field and the reference area of the inter-field motion compensation prediction by a vector limit block line position determined by the vector limit block line determining process; a slice division process that forcedly performs slice division at a first one-lower block line of a block line selecting the coded area prediction in the current field by the intra selecting process; and a deblocking filter inhibit process that forcedly inhibits deblocking filter processing performed across a block line of the current field for the slice division performed by the slice division process, wherein the vector limit process performs: a first vector limit to receive a parity of the current field, a parity of the reference field, a slice division position of the reference field, and the vector limit block line position, and makes only an upper part of a slice division position of a reference field referable in a block above the vector limit block line position, and a second vector limit to make a block line of the reference field that is in a position same as a vector limit block line position non-referable if a parity of the current field is a bottom field and a parity of the reference field is a top field, wherein the slice division process receives the parity of the current field, the forced intra block line position, and the vector limit block line position, performs the slice division at a boundary between the vector limit block line position and the one lower block line if the parity of the current field is the top field, and performs the slice division at a boundary of a forced intra block line position and the one lower block line if the parity of the current field is the bottom field.