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Patent Searching and Data


Title:
COMPRESSED IMAGE DATA REPRODUCING DEVICE AND COMPRESSED IMAGE DATA REPRODUCING METHOD
Document Type and Number:
Japanese Patent JP3496604
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To obtain a compressed image data reproducing device that can realize smooth reproduced image and nonlinear editing reproduction in the case of IP picture searching.
SOLUTION: A storage device 100 stores a structure of a data file where an interval between an in-frame coded frame and an inter-frame coded frame is made variable as management data. A system control circuit 103 uses storage device control data 9 for conducting processing such as ordinary reproduction, search, nonlinear edit reproduction or the like according to an external control signal 8 to output a 0-th decoder control signal 10, a 1st decoder control data 11, and a selection circuit control signal 12 respectively to a storage device 100, a 0-th decoder 101, a 1st decoder 102 and a selection circuit 104. In the case of reproduction of image data compression-coded by a variable length code, motion compensation using temporal correlation is conducted and fast preview using management information is attained and a variable M value in a GOP is stored in the unit of M value frames to realize various edit reproduction functions.


Inventors:
Yamamoto, Naoto
Application Number:
JP1999000360912
Publication Date:
February 16, 2004
Filing Date:
December 20, 1999
Export Citation:
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Assignee:
NEC CORP
International Classes:
H04N5/92; G11B27/00; G11B27/034; H04N5/783; H04N5/937; H04N19/114; H04N19/12; H04N19/134; H04N19/159; H04N19/177; H04N19/423; H04N19/48; H04N19/50; H04N19/503; H04N19/51; H04N19/527; H04N19/57; H04N19/577; H04N19/593; H04N19/61; H04N19/625; H04N5/781; H04N5/85; H04N9/804; (IPC1-7): H04N5/92; H04N5/937; H04N7/32
Attorney, Agent or Firm:
丸山 隆夫