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Patent Searching and Data


Title:
ENCODER AND DECODER FOR MOVING IMAGE DATA
Document Type and Number:
Japanese Patent JPH08336133
Kind Code:
A
Abstract:

PURPOSE: To obtain an image with low bit rate and high picture quality by transmitting only a specific area selectively in an encoder and a decoder for moving image data.

CONSTITUTION: This encoder judges whether a sampled image or the whole image(entire image) should be transmitted by a coding area judging device 103. When the entire image is coded and transmitted. it is transmitted by adding a signal representing the transmission of the entire image, and the entire image is stored in frame memory 107. When the sampled image is coded and transmitted, a small area such as a face, etc., is sampled and coded, and it is transmitted by adding a coding area identification signal representing the transmission of the sampled image and sampled image information representing a sampling position in the entire image. The decoder puts together the sampled image on the appropriate position of the entire image by identifying the fact that a received image is the sampled image and the sampling position by detecting the coding area identification signal and the sampled image information.


Inventors:
YOSHINO YOSHIKATSU
HONDA TOYOTA
KURODA MASAYOSHI
Application Number:
JP14343495A
Publication Date:
December 17, 1996
Filing Date:
June 09, 1995
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H04N19/102; H03M7/36; H04N7/24; H04N19/00; H04N19/136; H04N19/139; H04N19/196; H04N19/423; H04N19/46; H04N19/51; H04N19/593; H04N19/61; H04N19/625; H04N19/70; H04N19/85; (IPC1-7): H04N7/24; H03M7/36
Attorney, Agent or Firm:
Kenjiro Take