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Recording/reproduction/edition device

A technology of editing and video recording, applied in the direction of recording carrier editing, electronic editing of digital analog information signals, image communication, etc., to achieve the effect of reducing the burden of processing and smooth editing operations

Inactive Publication Date: 2007-04-25
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in a device with low signal processing capability such as a mobile terminal, if fast-forwarding is performed to decode all frames, there is a problem of image display delay.

Method used

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  • Recording/reproduction/edition device
  • Recording/reproduction/edition device
  • Recording/reproduction/edition device

Examples

Experimental program
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Embodiment Construction

[0034] Referring to FIG. 1, a configuration example of a video recording playback editing device according to the present invention will be described. The video playback editing device of this example has: image data input part 1, input image data by wired or wireless from the outside; Storage part 2, store the image data file that imports via image data input part 1; The image data file in the storage unit 2 separates the management information part and the data part such as image / sound; the image compression / expansion unit 4 decodes the image / sound data separated by the multiple separation unit 3 into data that can be displayed on the display unit form; the management information processing part 5 obtains the management information of the file separated by the multiple separation part 3; the reference image frame sequence generation judging part 6 judges whether to generate the reference image frame sequence; the reference image frame sequence generation part 7 judges as Whe...

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Abstract

There is provided a recording / reproduction / edition device capable of accessing moving picture data compressed by inter-frame encoding at random even if the signal processing ability is low. The recording / reproduction / edition device includes: an image data input unit for inputting image data compressed by inter-frame prediction; a reference image frame sequence creation judgment unit for judging whether to create a reference image frame sequence according to the number of I frames contained in each file of the image data or the I frame insert interval; and a reference image frame sequence creation unit for adding an image frame to the I frame to create a reference image frame sequence consisting of the I frame and the added image frame if the reference image frame sequence creation judgment unit has judged to create the reference image frame sequence.

Description

technical field [0001] The present invention relates to a recording, reproducing and editing device for recording, reproducing and editing moving image data compressed by inter-frame coding. Background technique [0002] In video compression techniques such as MPEG and H.263, an intercoding technique using interframe prediction is used. In the inter-frame coding technique, a layer composed of a plurality of picture frames called a Group of Pictures (GOP (Group of Pictures)) is used. [0003] As shown in Figure 8, GOP consists of intra-coded frames (I frames) I1, I2, forward predictive coded frames (P frames) P1, P2, and bidirectional predictive coded frames (B frames) B1, B2, B3, B4, B5, B6 There are three types of frames. An I-frame does not use inter-coding, instead it uses intra-coding. I-frames must be inserted at the beginning of each GOP. A P frame is a frame in which a difference obtained by inter-frame prediction from a past frame is coded. A B-frame is a frame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/91H04N5/92H04N7/24G11B27/00H04N5/783H04N9/804H04N19/132H04N19/134H04N19/159H04N19/172H04N19/189H04N19/40H04N19/50H04N19/503H04N19/577H04N21/433H04N21/4402H04N21/845
CPCG11B27/005H04N5/783H04N21/4334H04N21/4402H04N9/8042H04N21/845G11B27/3027G11B27/034H04N5/91
Inventor 中村康洋
Owner SHARP KK