Abstract: In a random access reproduction of a stream in which video and audio are multiplexed, it is difficult to reproduce the video and audio in synchronization. A demultiplexer (110) separate a video packet, an audio packet, and a subtitle packet from the inputted multiplexed stream and supplies them to a video decoder (130), an audio decoder (140), and a subtitle decoder (150), respectively. The video decoder (130) decodes the inputted video packets and calculates PTS of the display head picture according to the PTS of the decoded head picture acquired from the video stream. A clock control unit (120) supplies the PTS of the display head picture as a synchronization signal to the audio decoder (140) and the subtitle decoder (150). The audio decoder (140) and the subtitle decoder (150) decode an audio and a subtitle access unit having the PTS value identical to the display head PTS.

Abstract: To provide an apparatus for treating a nitrate waste liquid that includes a denitrification tank (12A) which accommodates active sludge that adsorbs or takes in the radioactive substance in a nitrate waste liquid (11) and in which an anaerobic microorganism that reduces the nitric acid to nitrogen gas grows, and a reaeration tank (14) in which a denitrification-treated liquid (24) treated in the denitrification tank (12A) is aerated and mixed with active sludge.

Abstract: According to one embodiment, a capturing apparatus includes a capturing unit configured to capture a moving image video, a storage unit configured to store the moving image video captured by the capturing unit, an operation unit configured to include a plurality of keys used to instruct playback of the moving image video stored in the storage unit, a skip playback unit configured to play back the moving image video while skipping the moving image video at predetermined time intervals every time a predetermined operation is made on the operation unit, and a playback control unit configured to switch the time intervals skipped by the skip playback unit based on the total playback time period of the moving image video.

Abstract: An image-coding format converting apparatus comprising an EMPEG2 image decoder 30, a resolution/frame rate converter 31, a motion vector converter 32, and an MPEG4 encoder 33. The EMPEG2 decoder 30 decodes a bit stream of EMPEG2 image codes, generating an image signal. The resolution/frame rate converter 31 converts the image signal. The MPEG4 encoder 33 encodes the output of the resolution/frame rate converter 31, generating a bit stream of MPEG4 image codes. In the resolution/frame rate converter 31, pixels are added or extracted in accordance with the start position of a macro block, thus adjusting the input image signal to one than can easily be encoded to MPEG4 image codes. The motion vector converter 32 generates an MPEG4 motion vector from parameters such as an MPEG2 motion vector. The MPEG4 encoder 33 uses the MPEG4 motion vector to encode the output of the resolution/frame rate converter 31.

Abstract: An image information decoding method for decoding compressed image information which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resultant orthogonal transform coefficients. The decoding process includes performing dequantization such that a quantization parameter is weighted by an addition operation, and the dequantization is performed on each chroma components of the quantized coefficients using said weighted quantization parameter, and performing an inverse orthogonal transform.

Abstract: It is possible to display a caption with an aspect ratio independent from the aspect ratio of a main video. When a flag indicating that the aspect ratio of the caption is 16:9 is set, the caption video image frame size (720×480) is converted so as to match the aspect ratio of 16:9 and the caption video obtained as the result is superimposed on the main video and displayed. That is, when the main video has an aspect ratio of 4:3, as shown in FIG. 19, reduction in the lateral direction is performed and the main video is displayed with addition of black tone at the right and left but the caption video is displayed with the aspect ratio of 16:9.

Abstract: An image-coding format converting apparatus comprising an MPEG2 image decoder 30, a resolution/frame rate converter 31, a motion vector converter 32, and an MPEG4 encoder 33. The MPEG2 decoder 30 decodes a bit stream of MPEG2 image codes, generating an image signal. The resolution/frame rate converter 31 converts the image signal. The MPEG4 encoder 33 encodes the output of the resolution/frame rate converter 31, generating a bit stream of MPEG4 image codes. In the resolution/frame rate converter 31, pixels are added or extracted in accordance with the start position of a macro block, thus adjusting the input image signal to one than can easily be encoded to MPEG4 image codes. The motion vector converter 32 generates an MPEG4 motion vector from parameters such as an MPEG2 motion vector. The MPEG4 encoder 33 uses the MPEG4 motion vector to encode the output of the resolution/frame rate converter 31.

Abstract: An image information decoding method for decoding compressed image information in an image decoding apparatus, which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resultant orthogonal transform coefficients. The decoding process includes performing, in a dequantization unit in the image decoding apparatus, dequantization such that a quantization parameter is weighted by an addition operation that adds the weight by addition, and the dequantization is performed on each chroma and luma component of the quantized coefficients using quantization step sizes, said luma component being weighted by the quantization parameter; and performing, in a transform unit in the image decoding apparatus, an inverse orthogonal transform.

Abstract: An image information decoding method for decoding compressed image information which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resultant orthogonal transform coefficients. The decoding process includes performing dequantization such that a quantization parameter is weighted by an addition operation, and the dequantization is performed on each chroma components of the quantized coefficients using said weighted quantization parameter, and performing an inverse orthogonal transform.

Abstract: According to an embodiment of the invention, in a digital video camera using a non-tape recording medium, the user can select whether to save a moving image file in a divided form or as one file, when recording a moving image, by changing the function of a REC button. When one moving image file has been saved in a divided form, a moving image file to be reproduced is easily searched, and a moving image is quickly played from an object chapter, or from a divided sub-file.

Abstract: In a random access reproduction of a stream in which video and audio are multiplexed, it is difficult to reproduce the video and audio in synchronization. A demultiplexer (110) separate a video packet, an audio packet, and a subtitle packet from the inputted multiplexed stream and supplies them to a video decoder (130), an audio decoder (140), and a subtitle decoder (150), respectively. The video decoder (130) decodes the inputted video packet and calculates PTS of the display head picture according to the PTS of the decoded head picture acquired from the video stream. A clock control unit (120) supplies the PTS of the display head picture as a synchronization signal to the audio decoder (140) and the subtitle decoder (150). The audio decoder (140) and the subtitle decoder (150) decode an audio and a subtitle access unit having the PTS value identical to the display head PTS.

Abstract: To effectively reproduce video depending on the performance of a reproducing apparatus. A controller 446 determines whether or not an entry of video is a beginning of a chapter of video or whether or not a scene change of the entry is important. In other words, the controller 446 determines whether or not an entry under evaluation corresponds to a time of a chapter of chapter scene change information 447 or whether or not the entry is an important scene change. If an entry under evaluation corresponds to a time of a chapter the controller 446 sets priority_flag=3 and stores it to an output server 426. The present invention can be applied to a game device or the like that uses for example a DVD.

Abstract: Pictures can be encoded such that no display wait occurs or a decoding side. Pictures are re-encoded such that their encoding order is changed. As a result, picture B3 is detected as picture Na+1 (FIG. 11A) that is decoded later than picture I1 (picture Nd) by two pictures. Thus, picture P3 (picture Na+2) (a picture displayed later than picture I1 by two pictures) is contained in picture sequence {I1, P2, B3}. As shown in FIG. 11C and FIG. 11D, picture B3 is decoded at a time corresponding to its displaying time. Thus, picture B3 can be displayed at its displaying time.

Abstract: A 6-tap filter circuit and a 4-tap filter circuit generate interpolation pixel signals of an image signal S40. A selection circuit selects one of the 6-tap filter circuit and the 4-tap filter circuit based on a filter selection signal S34 according to the block size of a motion vector to be generated in a motion-vector generating circuit.

Abstract: An image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.

Abstract: According to one embodiment, a camera apparatus includes an extraction device extracting a corresponding “I” picture corresponding to chapter data from “I” pictures included in moving image data while the chapter data specifying a reproduction start point in the moving image data indicating a shot video is being generated.

Abstract: According to one embodiment an image shooting apparatus comprises shooting mechanism for shooting image information, generating means for generating a moving image stream data file and a moving image information data file formed of information associated with the moving image stream data file as separate files for one title in the image information shot by the shooting means, and first recording means for recording the moving image stream data file and the moving image information data file generated by the generating means as separate files.

Abstract: The invention provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.

Abstract: An image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.

Abstract: An image processing apparatus is provided that can define the change amount of a quantizing parameter by suitably reflecting the complexity of image data in the case, when the quantizing parameter is increased a predetermined unit amount, the coarseness the image data of motion picture is quantized becomes r times. An activity computing circuit generates an activity Nactj serving as a complexity of the image data. A ?Q computing circuit defines a corresponding relationship between activity Nactj and change amount data ?Q such that the change amount data ?Q of quantizing parameter increases 1 as the activity Nactj becomes 1.12 times, to thereby acquire change amount data ?Q corresponding to the activity Nactj generated by the activity computing circuit.