Video data processing apparatus, video data encoding apparatus, and methods thereof

A video data processing apparatus for removing a repeat field from video data, comprising:

• repeat field detecting means for detecting the repeat field contained in the video data;
• analyzing means for determining whether or not an occurrence sequence of the repeat field contained in the video data is regular corresponding to the detected results of said repeat field detecting means;
• video data processing means for removing the repeat field contained in the video data;
• and
• controlling means for controlling said video data processing means to remove a field determined as a repeat field by said repeat field detecting means from the video data in a period that the occurrence sequence of the repeat field is determined regular by said analyzing means and for controlling said video data processing means not to remove a field determined as a repeat field by said repeat field detecting means from the video data in a period that the occurrence sequence of the repeat field is determined irregular by said analyzing means.

A video data processing apparatus for processing video data of which a first video material of which an original material is processed with 2:3 pull-down process and a second video material of an original material with a frequency of a normal television signal coexist, comprising:

• analyzing means for analyzing a repetitive pattern of the repeat field contained in the video data and determining whether a current field of the video data is a field of the first video material or a field of the second video material;
• video data processing means for removing the repeat field from the video data;
• and
• controlling means for controlling the operation of said video data processing means corresponding to the analyzed results of said analyzing means.

A video data processing apparatus for processing video data including a progressive-scanned video material and an interlace-scanned video material, comprising:

• analyzing means for analyzing the continuity of a repeat field contained in the video data and determining whether the current field of the video data is a field of the progressive-scanned video material or a field of the interlace-scanned video material;
• video data processing means for removing the repeat field from the video data;
• and
• controlling means for controlling said video data processing means to remove a repeat field contained in the progressive-scanned video material and not to remove a field contained in the interlace-scanned video material corresponding to the analyzed results of said repeat field analyzing means.

A video data processing method for removing a repeat field from video data, comprising the steps of:

• detecting the repeat field contained in the video data;
• analyzing a pattern of the repeat field contained in the video data corresponding to the detected results of the repeat field detecting step and determining whether the pattern of the repeat field is continuous or discontinuous;
• removing the repeat field contained in the video data;
• and
• controlling the video data processing step to remove a field determined as a repeat field by the repeat field detecting step from the video data in a period that the patten of the repeat field is determined continuous by the analyzing step and the video data processing step not to remove a field determined as a repeat field by the repeat field detecting step from the video data in a period that the pattern of the repeat field is determined discontinuous by the analyzing step.

A video data processing method for removing a repeat field from video data, comprising the steps of:

• detecting the repeat field contained in the video data;
• determining whether or not an occurrence sequence of the repeat field contained in the video data is regular corresponding to the detected results of the repeat field detecting step;
• removing the repeat field contained in the video data;
• and
• controlling the video data processing step to remove a field determined as a repeat field by the repeat field detecting step from the video data in a period that the occurrence sequence of the repeat field is determined regular by the analyzing step and the video data processing step not to remove a field determined as a repeat field by the repeat field detecting step from the video data in a period that the occurrence sequence of the repeat field is determined irregular by the analyzing step.

A video data processing method for processing video data of which a first video material of which an original material is processed with 2:3 pull-down process and a second video material of an original material with a frequency of a normal television signal coexist, comprising the steps of:

• analyzing a repetitive pattern of the repeat field contained in the video data and determining whether a current field of the video data is a field of the first video material or a field of the second video material;
• removing the repeat field from the video data;
• and
• controlling the operation of the video data processing means corresponding to the analyzed results of the analyzing step.

A video data processing method for processing video data field by field, a progressive-scanned video material and an interlace-scanned video material coexisting in the video data, comprising the steps of:

• analyzing the continuity of a repeat field contained in the video data and determining whether the current field of the video data is a field of the progressive-scanned video material or a field of the interlace-scanned video material;
• removing the repeat field from the video data;
• and
• controlling the video data processing step to remove a repeat field contained in the progressive-scanned video material and not to remove a field contained in the interlace-scanned video material corresponding to the analyzed results of the repeat field analyzing step.

A video data encoding apparatus for encoding video data in which a repeat field is placed in a predetermined sequence, comprising:

• analyzing means for analyzing a pattern of the repeat field contained in the video data and determining whether or not the pattern of the repeat field is continuous;
• video data processing means for removing the repeat field from the video data;
• encoding means for encoding video data that is output from said video data processing means;
• and
• controlling means for controlling said video data processing means to remove a field determined as a repeat field by said repeat field detecting means and perform an encoding process in a frame prediction mode and a frame DCT mode in a period that the pattern of the repeat field is determined continuous by said analyzing means and for controlling said video processing means not to remove a field determined as a repeat field by said repeat field detecting means and perform an encoding process in one of a frame prediction mode and a field prediction mode and one of a frame DCT mode and a field DCT mode in a period that the pattern of the repeat field is determined discontinuous by said analyzing means.

A video data encoding apparatus for encoding video data of which a first video material of which an original material is processed with 2:3 pull-down process and a second video material of an original material with a frequency of a normal television signal coexist, comprising:

• analyzing means for analyzing a repetitive pattern of the repeat field contained in the video data and determining whether the current field of the video data is a field of the first video material or a field of the second video material;
• video data processing means for removing the repeat field from the video data;
• encoding means for encoding video data that is output from said video data processing means;
• and
• controlling means for controlling an operation of said video data processing means and an encoding mode of said encoding means corresponding to the analyzed results of said analyzing means.

A video data encoding apparatus for encoding video data of which a progressive-scanned video material and an interlace-scanned video material coexist, comprising:

• analyzing means for analyzing the continuity of a repeat field contained in the video data and determining whether the video data is the progressive-scanned video data or the interlace-scanned video data;
• video data processing means for removing the repeat field from the video data;
• encoding means for encoding video data that is output from said video data processing means;
• and
• controlling means for controlling said video data processing means to remove a repeat field contained in the progressive-scanned video material and not to remove a field contained in the interlace-scanned video material corresponding to the analyzed results of said analyzing means and for controlling said encoding means to select an encoding mode corresponding to the progressive-scanned video material or the interlace-scanned video material.

A video data encoding apparatus for encoding video data of which a progressive-scanned video material and an interlace-scanned video material coexist, comprising:

• analyzing means for analyzing the continuity of a repeat field contained in the video data and determining whether the video data is the progressive-scanned video data or the interlace-scanned video data;
• video data processing means for removing the repeat field from the video data;
• encoding means for encoding video data that is output from said video data processing means;
• and
• controlling means for controlling said video data processing means to remove a repeat field contained in the video data and said encoding means to perform an encoding process in an encoding mode corresponding to the progressive-scanned video material when the video data is determined as the progressive-scanned video material by said analyzing means and for controlling said video data processing means not to remove a repeat field contained in the video data and said encoding means to perform an encoding process in an encoding mode corresponding to the interlace-scanned video material when the video data is determined as the interlace-scanned video material by said analyzing means.

A video data encoding apparatus for encoding video data in which a repeat field is placed, comprising:

• video data processing means for removing the repeat field from the video data;
• encoding means for encoding video data that has been processed by said video data processing means;
• and
• controlling means for analyzing the continuity of a repeat field contained in the video data, determining whether a pattern of the repeat field contained in the video data is continuous or discontinuous, and controlling an operation of said video data processing means and an encoding mode of said encoding means.

A video data encoding apparatus for encoding video data in which a repeat field is placed, comprising:

• video data processing means for removing the repeat field from the video data;
• encoding means for encoding video data that has been processed by said video data processing means;
• and
• controlling means for analyzing the continuity of a repeat field contained in the video data, determining whether an original material of the video data is a progress-scanned video material or interlace-scanned video data, and controlling an operation of said video data processing means and an encoding mode of said encoding means.

A video data encoding method for encoding video data in which a repeat field is placed in a predetermined sequence, comprising the steps of:

• analyzing a pattern of the repeat field contained in the video data and determining whether or not the pattern of the repeat field is continuous;
• removing the repeat field from the video data;
• encoding video data that is output from the video data processing step;
• and
• controlling the video data processing step to remove a field determined as a repeat field by the repeat field detecting step and perform an encoding process in a frame prediction mode and a frame DCT mode in a period that the pattern of the repeat field is determined continuous by the analyzing step and for controlling the video processing step not to remove a field determined as a repeat field by the repeat field detecting step and perform an encoding process in one of a frame prediction mode and a field prediction mode and one of a frame DCT mode and a field DCT mode in a period that the pattern of the repeat field is determined discontinuous by the analyzing step.

A video data encoding method for encoding video data of which a first video material of which an original material is processed with 2:3 pull-down process and a second video material of an original material with a frequency of a normal television signal coexist, comprising the steps of:

• analyzing a repetitive pattern of the repeat field contained in the video data and determining whether the current field of the video data is a field of the first video material or a field of the second video material;
• removing the repeat field from the video data;
• encoding video data that is output from the video data processing step;
• and
• controlling an operation of the video data processing step and an encoding mode of the encoding step corresponding to the analyzed results of the analyzing step.

A video data encoding method for encoding video data of which a progressive-scanned video material and an interlace-scanned video material coexist, comprising the steps of:

• analyzing the continuity of a repeat field contained in the video data and determining whether the video data is the progressive-scanned video data or the interlace-scanned video data;
• removing the repeat field from the video data;
• encoding video data that is output from the video data processing step;
• and
• controlling the video data processing step to remove a repeat field contained in the progressive-scanned video material and not to remove a field contained in the interlace-scanned video material corresponding to the analyzed results of the analyzing step and for controlling the encoding step to select an encoding mode corresponding to the progressive-scanned video material or the interlace-scanned video material.

A video data encoding method for encoding video data of which a progressive-scanned video material and an interlace-scanned video material coexist, comprising the steps of:

• analyzing the continuity of a repeat field contained in the video data and determining whether the video data is the progressive-scanned video data or the interlace-scanned video data;
• removing the repeat field from the video data;
• encoding step for encoding video data-that is output from the video data processing step;
• and
• controlling the video data processing step to remove a repeat field contained in the video data and the encoding step to perform an encoding process in an encoding mode corresponding to the progressive-scanned video material when the video data is determined as the progressive-scanned video material by the analyzing step and for controlling the video data processing step not to remove a repeat field contained in the video data and the encoding step to perform an encoding process in an encoding mode corresponding to the interlace-scanned video material when the video data is determined as the interlace-scanned video material by the analyzing step.

A video data encoding method for encoding video data in which a repeat field is placed, comprising the steps of:

• removing the repeat field from the video data;
• encoding video data that has been processed by the video data processing step;
• and
• analyzing the continuity of a repeat field contained in the video data, determining whether a pattern of the repeat field contained in the video data is continuous or discontinuous, and controlling an operation of the video data processing step and an encoding mode of the encoding step.

A video data encoding method for encoding video data in which a repeat field is placed, comprising the steps of:

• removing the repeat field from the video data;
• encoding video data that has been processed by the video data processing step;
• and
• analyzing the continuity of a repeat field contained in the video data, determining whether an original material of-the video data is a progress-scanned video material or interlace-scanned video data, and controlling an operation of the video data processing step and an encoding mode of the encoding step.