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US 5,479,264 AGranted
High-efficiency encoder and video information recording/reproducing apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTomohiro Ueda, Takashi Itow, Yoshinori Asamura, Ken Onishi, Hidetoshi Mishima
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Abstract
In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field.
Claims82
A video information apparatus comprising:
- a recording device, recording video information with helical scanning, wherein said recording device collects signals of a plurality of fields or frames in one recording unit and records in a predetermined number of tracks.
A video information apparatus comprising:
- a recording device, recording video information with helical scanning, wherein said recording device collects signals of a plurality of fields or frames in one recording unit, and records in one or more tracks selected from a predetermined number of tracks in accordance with an information amount to be recorded.
A video information apparatus, comprising:
- a recording device, including
- an encoder, encoding a digital video signal including a plurality of fields or frames;
- and
- a recorder, recording the plurality of fields or frames as one recording unit in a plurality of tracks.
1 more element
Dependencies are inferred from the claim text.