Image coder, video camera, integrated circuit, and image coding method

An image coding and coding technology, which is applied in image communication, television, electrical components, etc., can solve problems such as image quality damage, and achieve the effect of good reproduction image quality and high practical value

Inactive Publication Date: 2010-11-17
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] However, in the above-mentioned conventional digital video camera having a pre-recording function, there is a problem that, when decoding the recorded coded information, the decoding result of a dummy GOP (GOP_d) is displayed as a dummy image, and unnecessary dummy images are generated. The image will also be displayed, and the quality of the beginning of the following GOP will also be damaged

Method used

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  • Image coder, video camera, integrated circuit, and image coding method
  • Image coder, video camera, integrated circuit, and image coding method
  • Image coder, video camera, integrated circuit, and image coding method

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Embodiment Construction

[0057] An image encoding device according to the present invention encodes a video signal sent from an imaging unit and records it on a recording medium, and includes: an encoding unit that generates a closed group of pictures or an open picture by encoding the video signal. group; a buffer unit that memorizes at least one picture group generated by the encoding unit in a first-in-first-out manner; a user interface unit that accepts an instruction to start and end shooting; and a recording control unit that (1) part, and (2) according to the instructions accepted by the user interface part, ensure either one of the recording state and the non-recording state, the recording state means that the picture group output from the buffer part is In the state of recording on the recording medium, the non-recording state refers to a state in which the group of pictures is not recorded on the recording medium; the recording control unit, before the user interface unit accepts a shooting s...

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Abstract

An image coder having a pre-recoding function comprises a coding unit (11) for generating a closed GOP or an open GOP by coding a video signal, a buffer unit (14) for storing at least one GOP generated by the coding unit (11) in a first-in first-out way, a user I / F section (12a) for receiving start and end instructions of imaging, and a recording control section (12b) which sets up a non-recording mode before the user I / F section (12a) receives an imaging start instruction, allows the coding unit (11) to start and continue coding and thereby to generate a GOP sequence including a closed GOP, changes the mode from the non-recording mode to a recording mode when the user I / F section (12a) receives the imaging start instruction, and controls the coding unit (11) to generate a GOP sequence including only open GOPs.

Description

technical field [0001] The present invention relates to an image encoding device that encodes a video signal sent from an imaging unit and records it on a recording medium, and a digital video camera including the image encoding device. Background technique [0002] When a conventional digital camera or the like records an image, encoding and recording of the image are started by a user's instruction to start recording (operation of a recording key, etc.) (for example, refer to Patent Document 1). [0003] Figure 7 The configuration of a conventional digital video camera is shown. Figure 8 show Figure 7 The control timing of the recording operation of the conventional digital video camera is shown. [0004] Such as Figure 7 As shown, a conventional digital video camera has: an imaging unit 40 , an encoding unit 41 , a control unit 42 , a recording unit 43 and a data transfer unit 47 . [0005] The imaging unit 40 is a camera unit composed of an optical mechanism, an im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N5/225H04N5/92
CPCH04N19/00781H04N5/772H04N19/0023H04N9/8042H04N19/00484H04N19/00054H04N19/61H04N19/114H04N19/162H04N19/423
Inventor 增野贵司重里达郎津田贤治郎岛崎浩昭西乡贺津雄小林裕树千叶琢麻关征永
Owner PANASONIC CORP
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