Title:
【発明の名称】画像情報圧縮伸長装置
Document Type and Number:
Japanese Patent JP2956464
Kind Code:
B2
Abstract:
An image information compression and decompression device produces a low frequency band signal suitable for reproduction of a standard definition (SD) image and a combined high frequency band signal which, when processed together with the low frequency band signal, can reproduce a high definition (HD) image. These signals are derived from a high definition (HD) image signal and are subjected to motion compensation prediction coding. An I picture of the HD image is divided into a plurality of band signals which are coded and quantized by a coding/quantizing circuit. Thus, an intra-plane coding of the divided image signal is performed for the I picture. For a P picture of the HD image, a low frequency band signal is derived and a combined high frequency band signal excluding the low frequency band signal, is produced. The low frequency band signal and the combined high frequency band signal are subjected to motion compensation prediction coding by a motion compensation prediction coding circuit. This results in a system which is compatible to both standard and high definition television systems.
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Inventors:
TERANISHI YASUHIKO
HIGURE SEIJI
HARUMATSU MITSUO
HIGURE SEIJI
HARUMATSU MITSUO
Application Number:
JP35261593A
Publication Date:
October 04, 1999
Filing Date:
December 29, 1993
Export Citation:
Assignee:
NIPPON BIKUTAA KK
International Classes:
H04N19/423; H04N19/60; H04N19/503; H04N19/51; H04N19/59; H04N19/593; H04N19/61; H04N19/625; H04N19/635; H04N19/85; (IPC1-7): H04N7/30
Domestic Patent References:
| JP62260492A | ||||
| JP4181887A |
Attorney, Agent or Firm:
Kajiwara Yasunori