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Coding apparatus, coding method, coding method program, and recording medium recording the coding method program

A coding device and coding technology, applied in TV, electrical components, digital video signal modification, etc., can solve problems such as damage to image quality stability, and achieve the effect of simplifying the overall structure

Inactive Publication Date: 2006-01-11
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Accordingly, image quality stability may be compromised

Method used

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  • Coding apparatus, coding method, coding method program, and recording medium recording the coding method program
  • Coding apparatus, coding method, coding method program, and recording medium recording the coding method program
  • Coding apparatus, coding method, coding method program, and recording medium recording the coding method program

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Embodiment 1

[0261] (1) Configuration of the embodiment

[0262] Fig. 1 is a block diagram showing an encoding apparatus according to an embodiment of the present invention. For example, a DVD player or the like reproduces MPEG2 compression-encoded data DMPEG. The TV tuner outputs an analog video signal S1. The recording and reproducing apparatus records encoded data DMPEG and video signal S1 on a recording medium such as an optical disc. The encoding device 41 is applicable to such a recording and reproducing device, compresses and encodes the data DMPEG and the video signal S1 according to AVC, and outputs the encoded data D4.

[0263] In the encoding device 41, an A / D converter (A / D) 42 performs analog-digital conversion on the video signal S1, and outputs video data D11.

[0264] MPEG2-based coded data DMPEG is provided to decoding means 43, which decodes the coded data DMPEG and outputs baseband-based video data D12. In this process, the decoding means 43 notifies the complexity c...

Embodiment 2

[0338] According to this embodiment, the computer runs the coded program. In this way, the computer provides functional blocks corresponding to the blocks of the encoding device 41 described above with reference to Embodiment 1. The computer executes processes equivalent to those of the encoding device 41 . The encoding program may be provided by being pre-installed in the computer. In addition, the encoding program can be provided by downloading via a network such as the Internet. Alternatively, the encoded program can be provided by being recorded on a recording medium. Various recording media may be available such as optical disks, magneto-optical disks, and the like.

[0339] As in this embodiment, a computer can execute a processing program to configure functional blocks similar to the encoding device 41 according to Embodiment 1 for encoding. In this case, Embodiment 2 can also provide similar effects to Embodiment 1.

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Abstract

Disclosed is an coding apparatus, an coding method, an coding method program, and a recording medium recording the coding method program. The present invention is applicable to transmission of motion pictures using satellite broadcasts, cable television, Internet, cellular phones, and the like, and recording of motion pictures on recording media such as optical disks, magnetic optical disks, flash memory, and the like, for example. In this manner, the coding apparatus can be also constructed to function as a decoding apparatus and an image conversion apparatus. An embodiment of the present invention can simplify the overall construction of such coding apparatus. An embodiment of the present invention detects an optimum prediction mode for intra prediction and inter prediction prior to a coding process. The embodiment detects variables IntraSAD, InterSAD, and (X) indicating differential data sizes according to the detected optimum prediction mode. The embodiment determines target code amounts for pictures according to the variables IntraSAD, InterSAD, and (X).

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2004-200255 filed in the Japan Patent Office on Jul. 7, 2004, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an encoding device, an encoding method, an encoding method program, and a recording medium for recording the encoding method program. The present invention is applicable to, for example, transmission of movies using satellite broadcasting, cable television, the Internet, cellular phones, etc., and recording of movies on recording media such as optical disks, magneto-optical disks, flash memory, and the like. An encoding device may detect optimal prediction modes of intra prediction and inter prediction before the encoding process. The encoding device may detect a variable indicating the size of the difference data according to the detected best predict...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/50H04N7/26H04N19/50H04N19/105H04N19/109H04N19/11H04N19/115H04N19/12H04N19/126H04N19/134H04N19/136H04N19/137H04N19/14H04N19/147H04N19/172H04N19/176H04N19/177H04N19/186H04N19/19H04N19/196H04N19/503H04N19/523H04N19/567H04N19/577H04N19/593H04N19/60H04N19/61H04N19/625H04N19/85H04N19/91
CPCH04N19/00781H04N19/00181H04N19/00218H04N19/0003H04N19/00042H04N7/2617H04N19/00036H04N19/0009H04N19/159H04N19/149H04N19/61H04N19/11H04N19/107H04N19/109H04N19/124
Inventor 佐藤数史竺逸雯Y·亚加萨基
Owner SONY CORP
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