Method and an apparatus for encoding video data for seamless connection using flags to indicate top or bottom of field and whether a field is presented plural times
First Claim
1. A method for generating a bit stream to be stored to a disc, the bit stream containing a video object that contains encoded video data and management information, the encoded video data including one or more video frames, the management information including a first flag and a second flag for each video frame, the first flag indicating whether a first field of a corresponding video frame is a top field or a bottom field and the second flag indicating whether the first field of the corresponding video frame is presented a plurality of times during presentation of the video object, said method comprising:
- generating the encoded video data from an input video signal, from which at least one field is removed, and the management information in such a manner that the first and second flags have such values that the presentation of the video object starts with a top field and ends with a bottom filed; and
converting the encoded video data and the management information to the video object.
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Abstract
A signal conversion recording method applies a signal recording method whereby a video signal converted to a frame rate greater than the frame rate of the signal source by repeating particular fields plural times is converted to an intermediate signal having a frame rate substantially equal to the frame rate of the original signal source by deleting these repeated redundant fields. This intermediate signal is compression coded to obtain the recording signal, and the recording signal is recorded to a recording medium together with a repeat first field flag RFF declaring whether a field was deleted, and a top field first flag TFF declaring which of the two fields in the each of the resulting frames is first on the time-base, is wherein when plural logical recording periods are provided on a single recording medium, the video signal is converted to the recording signal so that the flags hold particular values at the start and end of each recording period.
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Citations
13 Claims
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1. A method for generating a bit stream to be stored to a disc, the bit stream containing a video object that contains encoded video data and management information, the encoded video data including one or more video frames, the management information including a first flag and a second flag for each video frame, the first flag indicating whether a first field of a corresponding video frame is a top field or a bottom field and the second flag indicating whether the first field of the corresponding video frame is presented a plurality of times during presentation of the video object, said method comprising:
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generating the encoded video data from an input video signal, from which at least one field is removed, and the management information in such a manner that the first and second flags have such values that the presentation of the video object starts with a top field and ends with a bottom filed; and converting the encoded video data and the management information to the video object. - View Dependent Claims (2, 3)
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4. An apparatus for generating a bit stream to be stored to a disc, the bit stream including a video object that contains encoded video data and management information, the encoded video data including one or more video frames, the management information including a first flag and a second flag for each video frame, the first flag indicating whether a first field of a corresponding video frame is a top field or a bottom field while the second flag indicates whether the first field of the bottom corresponding video frame is presented a plurality of times during presentation of the video object, said apparatus comprising:
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a storage means for storing an input video signal; a decision means for determining at least one removal field to be removed from the stored input video signal; a video data generating means for removing the at least one removal field from the input video signal and encoding a remaining part of the input video signal to obtain the encoded video data; a management information generating means for generating the management information including the first and second flags; a conversion means for converting the encoded video data and the management information into the video object; and a controller for controlling the video data generating means and the management information generating means in such a manner that the first and second flags in the generated management information have such values that the presentation of the video object starts with a top field and ends with a bottom field. - View Dependent Claims (5, 6)
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7. A machine-readable information disc for storing a bit stream containing a plurality of video objects, said information disc comprising:
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a video object storage area for storing the video objects containing encoded video data encoded from a video signal from which at least one field is removed, and management information therefor; and an index storage area for storing reproduction sequence information indicative of a reproduction order of the video objects, and seamless information indicative of at least one of the video objects that is to be contiguously reproduced; wherein the encoded video data includes one or more video frames, and the management information includes a first flag and a second flag for each video frame, the first flag indicating whether a first field of a corresponding video frame is a top field or a bottom field, the second flag indicating whether the first field of the corresponding video frame is presented a plurality of times during video presentation, the first and second flags having such values that presentation of each video object starts with a top field and ends with a bottom field. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification