Moving picture data decoding device
AssigneeFujitsu Limited
InventorToshiro OHBITSU
Life of this patent
Estimating the term…
Abstract
To aim at outputting video signals causing a viewer to feel none of a sense of discomfort even if a partial or entire lack of the picture occurs in a device that decodes a datastream of a compressed moving picture of one-segment broadcasting etc and outputs the video signals. A moving picture data decoding device includes a buffer unit 26 buffered with a predetermined quantity of already-decoded pictures decoded by a decoding process, and a picture generation unit 23 configured to generate pictures and, if there is a missing picture used for interframe prediction (S202), performing the picture generation (S205) in a way that acquires a substitute reference picture with which to substitute the missing picture from the already-decoded pictures buffered in the buffer unit 26 (S203).
Claims7
A moving picture data decoding device executing a decoding process including picture generation by interframe prediction based on a compressed moving picture datastream, comprising:
- a buffer buffered with a predetermined quantity of already-decoded pictures decoded by the decoding process;
- and
- a picture generation unit configured to generate pictures and, if there is a missing reference picture used for the interframe prediction, performing the picture generation in a way that acquires a substitute reference picture with which to substitute the missing picture from the already-decoded pictures buffered in said buffer.
Information equipment executing a decoding process including picture generation by interframe prediction based on a compressed moving picture datastream, comprising:
- a buffer buffered with a predetermined quantity of already-decoded pictures decoded by the decoding process;
- a picture generation unit configured to generate pictures and, if there is a missing reference picture used for the interframe prediction, performing the picture generation in a way that acquires a substitute reference picture with which to substitute the missing reference picture from the already-decoded pictures buffered in said buffer;
- an output control unit outputting, to said display device, video signals based on the already-decoded pictures with a delay of a predetermined period of time since the time when the compressed moving picture datastream has been received or inputted in a state of being buffered with the predetermined quantity of already-decoded pictures;
- and
- a display unit displaying a picture based on the video signals output by said output control unit,
- wherein said picture generation unit, if the missing picture occurs due to a lack of information of the compressed moving picture datastream, acquires a reference picture or the substitute reference picture from the already-decoded pictures buffered in said buffer, then performs the picture generation and supplements the missing picture.
A moving picture data decoding method of executing a decoding process including picture generation by interframe prediction based on a compressed moving picture datastream, by which a computer executes:
- a buffering step of buffering a predetermined quantity of already-decoded pictures decoded by the decoding process;
- and
- a picture generating step of generating pictures and, if there is a missing reference picture used for the interframe prediction, performing the picture generation in a way that acquires a substitute reference picture with which to substitute the missing reference picture from the already-decoded pictures buffered in said buffering step.
A readable-by-computer recording medium recorded with a moving picture data decoding program for executing a decoding process including picture generation by interframe prediction based on a compressed moving picture datastream, said program making a computer execute:
- a buffering step of buffering a predetermined quantity of already-decoded pictures decoded by the decoding process;
- and
- a picture generating step of generating pictures and, if there is a missing reference picture used for the interframe prediction, performing the picture generation in a way that acquires a substitute reference picture with which to substitute the missing reference picture from the already-decoded pictures buffered in said buffering step.
Dependencies are inferred from the claim text.