IMAGE-DECODING METHOD AND APPARATUS

Title:

IMAGE-DECODING METHOD AND APPARATUS

Document Type and Number:

Japanese Patent JP2002300588

Kind Code:

A

Abstract:

To reduce load on image-decoding processing.

The image-decoding apparatus comprises an image type decoding section 104 for detecting a bidirectional prediction coding frame obtained, based on a first frame in the past and a second frame in the future in an image display order, a code read jump circuit 103 for abbreviating the decoding of the bidirectional prediction coding frame based on the detection result, and means 150, 160, 170, and 180 allocating what is obtained by decoding the coded data in the first frame or what is obtained by decoding the coded data of the second frame instead of the result output of the decoding, when the decoding to the bidirectional prediction coded frame is abbreviated, thus abbreviating the decoding to the bidirectional prediction coded frame and hence reducing the load on image decoding.

Inventors:

KATAGAI TOSHIHARU
WATANABE HIROMI
HASE AKIRA
IWATA KENICHI

Application Number:

JP2001104272A

Publication Date:

October 11, 2002

Filing Date:

April 03, 2001

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Assignee:

HITACHI LTD

International Classes:

H04N19/50; G06T9/00; H03M7/36; H04N19/102; H04N19/134; H04N19/172; H04N19/196; H04N19/42; H04N19/423; H04N19/44; H04N19/503; H04N19/51; H04N19/577; H04N19/61; H04N19/625; (IPC1-7): H04N7/32; H03M7/36

Attorney, Agent or Firm:

Tamamura Shizuyo

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