JP2008035535A - Method and apparatus for managing animation data of interactive optical disc - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for reproducing animation data using an enhanced navigation player. <P>SOLUTION: The method for reproducing animation data using the enhanced navigation player comprises the steps of: receiving first graphic information comprising an MNG file and animation data, associated with audio/video (A/V) data, from a first source; extracting from the first graphic information, second graphic information comprising a PNG file; decoding the second graphic information into first image data; and reproducing the first image data as animated images, based on the control data. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an animation data management method and apparatus for an interactive optical disc, and more particularly, to an A / A on an enhanced navigation medium such as an interactive DVD (IBD: Interactive Digital Versatile Disc) or an enhanced DVD (eDVD: Enhanced DVD). The present invention relates to a method and apparatus for managing animation data so that various animation data related to V data can be reproduced.

  High-density optical discs that can record and store digital data, such as DVDs, are widely used, but DVDs are capable of recording and storing high-quality video data as well as high-quality digital audio data for a long time. It is a capacity recording medium.

  The DVD includes a data stream area in which a digital data stream such as moving picture data is stored and a navigation data area in which navigation data necessary for playback control of the moving picture data is stored.

  Therefore, in a general DVD playback device, when a DVD is inserted into the device, the navigation data recorded in the navigation data area is read out and stored in the memory in the device, and then the navigation data is used. The moving image data recorded in the data stream area is reproduced. Thus, a user having a DVD playback device can view high-quality moving image data recorded on a DVD.

  Additional information related to the reproduction of A / V data can be recorded on the DVD. Such information includes HTML (Hyper Text Markup Language), SMIL (Synchronized Multimedia Integration Language), CSS (Cascading Style Sheet's Script Type; Data types such as content files, image data ('JPEG' or 'PNG'), audio data ('AC-3', 'MPEGaudio', 'DTS', 'SDDS'), animation data ('MNG') Content files and text / font data.

  Standardization for interactive DVD (IDVD) is in progress. The A / V data recorded on the IDVD is reproduced by the user's interactive request. If such an interactive DVD is commercialized, it is expected that various contents related to the main A / V data are widely provided via the digital recording medium, and the convenience of the user is improved.

  A method for accepting various types of content files listed above from a content server while reproducing main A / V data recorded on a DVD has been realized. Main A / V data and related content For example, there is a demand for a method for efficiently reproducing various animation data according to a user's request.

  Many embodiments of the present invention provide a method for playing animation data via an enhanced navigation player. The method includes receiving first graphic information comprised of animation data and control data associated with audio / video (A / V) data read from a first source; second and second from the first graphic information; Extracting third graphic information; decoding the second and third graphic information with first and second image data, respectively; and based on the control data, the first and second image data The method includes a step of reproducing at least one of them as an animation image.

  In one example, first control data is extracted from the first graphic information, second control data is extracted from the second graphic information, and third control data is extracted from the third graphic information. For example, the first graphic information is an MNG (Multimedia Network Graphics) file, the second graphic information is a PNG (Portable Network Graphics) file, and the third graphic information is JNG (JPEG Network Graphics). It is a file.

  The first control data is composed of MNG control information, the second control data is composed of PNG control information, and the third control data is composed of JNG control information.

  In one example, the method includes extracting first control data from the first graphic information; extracting second control data from the second graphic information; and extracting third control data from the third graphic information. The control data may be composed of the first, second, and third control data.

  For example, the first control data may be composed of MNG control information, the second control data may be composed of PNG control information, and the third control data may be composed of JNG control information. The first graphic information is an MNG file, the second graphic information is a PNG file, and the third graphic information is a JNG file.

  Another embodiment of the present invention is a method of playing animation data via an enhanced navigation player, which includes animation data and control data associated with audio / video (A / V) data read from a first source. Receiving first graphic information comprising: a step of storing the first graphic information on a storage medium; a step of extracting second and third graphic information from the first graphic information; Decoding first and second graphic information with first and second image data, respectively, extracting first, second, and third control data from the first, second, and third graphic information; ; Based on the control data, at least one of the first and second image data is animated Characterized in that it comprises the step of reproducing as Deployment image.

  In one example, the control data is composed of the first, second, and third control data, the first control data is composed of MNG control information, and the second control data is composed of PNG control information, The third control data is composed of JNG control information.

  The first graphic information is an MNG file, the second graphic information is a PNG file, and the third graphic information is a JNG file. The first source is an enhanced navigation medium or a content server. The storage medium may be a temporary storage medium and the first source may be an interactive DVD.

  The first graphic information may include MNG, PNG, and JNG data chunks. The MNG data chunk includes MNG header information, MNG end information, and control information for reproducing an animation image, and the PNG data chunk includes PNG header information, PNG end information, object image data, and object image data thereof. Control information for controlling the playback of the video.

  The JNG data chunk includes JNG header information, JNG end information, JPEG image data, and control information for controlling reproduction of the JPEG image data. The JPEG image data includes a multidimensional density attribute for determining a screen ratio for image data displayed on the display device based on a size of the display device. The multi-dimensional density attribute may include a horizontal pixel density X and a vertical pixel density Y in one example.

  An enhanced navigation player for playing animation data according to another embodiment of the present invention includes a first graphic composed of animation data and control data associated with audio / video (A / V) data read from a first source. A first decoder for receiving information; a second decoder for extracting second graphic information from the first graphic information as decoded first image data; and a third image from the first graphic information to a second image. A parser that extracts data; a third decoder that decodes the third graphic information as decoded second image data; and the decoded first and second image data based on the control data. Receive Characterized in that it comprises an image manager to play in the form of animation images.

  The first decoder, the second decoder, and the parser extract first, second, and third control data from the first, second, and third graphic information, respectively. The first control data includes MNG control information, the second control data includes PNG control information, and the third control data includes JNG control information. The first graphic information is an MNG file, the second graphic information is a PNG file, and the third graphic information is a JNG file.

  The first source is an enhanced navigation medium, a content server, or an interactive DVD. The storage device may further include a storage medium for temporarily storing the first graphic information received from the first decoder.

  In one example, the first graphic information includes MNG, PNG, and JNG data chunks. The MNG data chunk includes MNG header information, MNG end information, and control information for reproducing an animation image. The PNG data chunk includes PNG header information, PNG end information, object image data, and the object image data. Control information for controlling the playback of the video.

  The JNG data chunk includes JNG header information, JNG end information, JPEG image data, and control information for controlling reproduction of the JPEG image data. The JPEG image data includes a multidimensional density attribute for determining a screen ratio for image data displayed on the display device based on a size of the display device.

  According to another embodiment of the present invention, an enhanced navigation player includes an MNG composed of animation data and control data associated with audio / video (A / V) data read from at least one of an enhanced navigation medium or a content server. An MNG decoder for receiving graphic information; a PNG decoder for extracting PNG graphic information from the MNG graphic information as decoded first image data; and a JNG parser for extracting JNG graphic information from the MNG graphic information as JPEG image data A JPEG decoder for decoding the JNG graphic information with the decoded second image data; and based on the control data, Characterized in that it comprises a MNG layout manager for reproducing as an animation image by receiving the serial decoded first and second image data.

  The MNG decoder, PNG decoder, and JNG parser respectively extract MNG, PNG, and JNG control data from the MNG, PNG, and JNG graphic information.

  An enhanced navigation medium according to yet another embodiment of the present invention includes audio / video (A / V) data; navigation data for controlling playback of the A / V data by an enhanced navigation player; and the A / V data. And a structural configuration packed with control data. The structural configuration includes a data frame including an MNG file having animation information.

  The MNG file includes MNG chunk data; and at least one of PNG chunk data and JNG chunk data. The MNG chunk data includes an MNG header frame identifier; an MNG end frame identifier; and MNG control information.

  According to yet another embodiment of the present invention, an enhanced navigation data structure for packing animation data played via an enhanced navigation player includes an MNG file, which is an audio / video (A / V) file. Data; and navigation data for controlling reproduction of the A / V data by the enhanced navigation player.

  The A / V data and navigation data are packed into at least one of MNG chunk data; and PNG chunk data and JNG chunk data. The MNG chunk data includes a MNG header frame identifier; MNG end frame identifier; and MNG control information, and the PNG chunk data includes a PNG header frame identifier; PNG end frame identifier; and MNG control information, and the JNG chunk data. Includes a JNG header frame identifier; a JNG end frame identifier; and JNG control information.

  With reference to FIG. 1, an enhanced navigation player or an interactive disc player such as an ENAV or IDVD player will be described. Embodiments of the present invention will be described in conjunction with an IDVD or enhanced navigation (ENAV) disc or disc player, but this is merely an example, and the system and method provided herein is another form of recording medium. Alternatively, it can be applied to a content player device.

  An interactive disc player such as the IDVD player of FIG. The ENAV engine 100 includes a network manager 10 for downloading ENAV content from a content server 300 connected via a network, an ENAV buffer 11 for preloading ENAV content recorded on a content disc 400 such as IDVD, and an ENAV document. It includes a document processing unit 12 that receives and performs a data processing operation corresponding thereto.

  An element decoder 13 that decodes text data and element data such as animation data using audio, image, font, video or audio data, controls the ENAV buffer, and receives control signals received from the document processing unit 12 ENAV including an ENAV interface handler 14 for performing necessary related operations and receiving and transmitting a user trigger signal, a DVD trigger signal, a DVD status signal and a DVD control signal, and an AV renderer 15 for outputting audio and video The engine 100 is included in one or several embodiments.

  The ENAV engine 100 is connected to the DVD-Video playback engine 200. The content server 300 is connected to the network manager 10 and transmits various contents related to the A / V data recorded on the interactive DVD 400 to a plurality of data files. For example, as shown in FIG. 2, ENAV content data is divided into ENAV units (ENAVUnits) composed of one or more 'XHTML Document' files and related image, animation, audio, or text / font data. And transmitted.

  The animation data can be transmitted, for example, as an MNG (Multimedia Network Graphics) file recorded in a data format. The animation data MNG file includes, for example, a PNG (Portable Network Graphics) file or a JNG (JPEG Network Graphics) file.

  FIG. 3 shows MNG chunk data (Chunk Data) and chunk data structures of PNG and JNG. For example, MNG header information (MHDR) is recorded at the beginning of the MNG file, MNG end information (MEND) is recorded at the rear end, and a PNG file and a JNG file of image data are further recorded in this MNG file. Various control information (TERM, pHYs...) For reproducing and controlling image data of PNG files and JNG files can be selectively recorded in the MNG file.

  PNG header information (IHDR) is recorded at the beginning of the PNG file, PNG end information (IEND) is recorded at the rear end, and object image data (IDAT) displayed as an animation image and the object image data are recorded. Control information (pHYs, sRGB...) For reproduction control is selectively recorded in the PNG file.

  JNG header information (JHDR) is recorded at the beginning of the JNG file, JNG end information (IEND) is recorded at the rear end, and JPEG image data (JDAT) displayed as an animation image and the JPEG image are played back. Control information (pHYs, sRGB...) For control is selectively recorded in the JNG file.

  In one embodiment, the MNG file of animation data is received from the content server 300 and temporarily stored in the ENAV buffer 11, or in another embodiment, it is read from a specific recording area of the interactive DVD 400 and stored in the ENAV buffer. 11 is temporarily stored. As shown in FIG. 4, the animation decoder included in the element decoder 13 for reproducing an MNG file as an animation image includes an MNG-LC decoder 130, a PNG decoder 131, a JNG chunk parser 132, a JPEG decoder 133, and a layout manager. 134.

  Thereby, the MNG file of animation data is read from the interactive DVD 400 or received from the content server 300 and separated into the PNG file and the JNG file by the MNG-LC decoder 130, respectively, and the control included in the MNG file. The information is also separated and output to the MNG layout manager 134.

  The separated PNG file is decoded by the PNG decoder 131. At this time, the control information included in the PNG file and the decoded object image are respectively output to the MNG layout manager 134 and separated. The JNG file is separated into control information and JPEG image data by the JNG chunk parser 132.

  The control information of the JNG file is output to the MNG layout manager 134, and the JPEG image data is decoded with the JPEG image by the JPEG decoder 133 and output to the MNG layout manager 134. The JNG chunk parser 132 and the JPEG decoder 133 can be configured integrally, and control information and file separation operations in the MNG-LC decoder 130, the PNG decoder 131, and the JNG chunk parser 132 are based on, for example, the type of chunk data. Each is separated.

  The MNG layout manager 134 refers to the MNG control information, the PNG control information, and the JNG control information, respectively, and relates the decoded object image and JPEG image to the main A / V data reproduced by the DVD engine. Play as an animated video.

  Accordingly, the interactive optical disc player reads the animation data MNG file received from the content server 300 or read from the interactive DVD 400 while reproducing the main A / V data from the interactive DVD 400. It can be reproduced as an animation image related to the main A / V data.

  An interactive optical disk animation control information management method for efficiently recording control information selectively added and recorded for reproduction control of animation video as described above, so as to be more suitable for an interactive DVD. Will be described in detail.

  As shown in FIG. 5, 'Frame_width' (0 to 720) and 'Frame_height' (0 to limit the screen size are included in the MNG header information (MHDR) corresponding to the main control chunk in the MNG file of animation data. to 480 (576)) information, and 'Ticks_per_second' (up to 24) information for limiting the frame rate is recorded.

  The MNG header information (MHDR) further includes, for example, 'Nominal_layer_count' information, 'Nominal_frame_count' information, 'Nominal_layer_count' information, 'Simplity_profile' information, and the like, and MNG end information (MEND) for informing the end of the MNG file. ) Is recorded in an empty chunk.

  As shown in FIG. 6, DEFI (Define an object) information corresponding to an image definition chunk (Image Defining Chunks) in the MNG file includes, for example, “Object_id” information, “Do_not_show” information, “Concrete_flag” information, “ X_location 'information,' Y_location 'information,' Left_cb 'information,' Right_cb 'information,' Top_cb 'information,' Bottom_cb 'information, etc. are included, but if only one object exists,' Object_id 'information and' Concrete_flag ' 'Information is omitted, and' Do_not_show 'information is recorded as' 0x00 (visible)'.

  Then, the remaining information excluding the “Right_cb” information and the “Bottom_cb” information indicating the area and height of the frame is recorded as, for example, “Default 0”, and the maximum of 256 R in the PLTE (Global palette) information, for example. 'Max (256x3) B' information for indicating each of / G / B color is recorded, and information for indicating transparency for, for example, 256R / G / B color is recorded in tRNS (Global transparency) information. The

  The MNG file further includes IHDR / JHDR information, IDAT / JDAT information, and IEND information. TERM (Termination) information includes 'Termination_action' information, 'Action_after_iteration' information, 'Delay' information, and 'Iteration_max' information. If 'Termination_action' information is '0', the animation frame is finally displayed. Indicates the state, and when it is “1”, it indicates that the display is automatically turned off when the display is completed.

  When the 'Termination_action' information is '2', it returns to the first frame, and when it is '3', for example, it indicates that the display operation is started within the range from the first frame to the last frame.

  The 'Action_after_iteration' information indicates, for example, that the animation frame is finally displayed when '0', and indicates that when the display is completed, the animation frame disappears automatically when '1'. Indicates return to the first frame.

  In addition, 'Delay' information indicates a pause (Idle) time period from once playback to the next playback, and 'Iteration_max' information indicates a maximum value at which an animation frame can be repeatedly played back, and an infinite playback mode. In this case, for example, it is recorded as a '0x7FFFFFF' value.

  As shown in FIG. 7, the BACK (Background) information corresponding to the image display chunk in the MNG file includes 'Red_background' information, 'Green_background' information, and 'Blue_background' information, but the BACK information is an animation frame. This is information for setting the background color.

  The frame definition (FRAM) information includes information such as a frame mode (Frame_mode) and a subframe name (Sub_frame_name) defined in MNG-LC version 1.0, for example. On the other hand, as shown in FIG. 8, IHDR (Image header) information corresponding to the main PNG chunk in the PNG file of animation data includes “Width” (0 to 0) for limiting the screen area and height in IDVD. 720) and 'Height' (0 to 480 (576)) information.

  The IHDR (Image Header) information includes 'Bit Depth' information, 'Color type' information, 'Compression method' information, 'Filter method' information, and 'Interlace method' information, but 'Bit Depth' information. If the length value of the data used when representing each index of the palette is “8”, for example, it is possible to represent 2 to the 8th power, so that 256 colors can be represented.

  'Color type' information is information for expressing a color in the image and conforms to the PNG format. The functions of “Compression method” information and “Filter method” information are still undecided. The 'Interlace method' information is recorded as '0x00' when the interlace function is not supported.

  The PLTE (palette) information includes 'max (256x3) B' information for indicating a maximum of 256 R / G / B colors, IDAT (image data) information records actual image data, and PNG IEND information as information for notifying the end of the file is recorded as an empty chunk.

  As shown in FIG. 9, the tRNS (Transparency) information corresponding to the auxiliary PNG chunk in the PNG file includes, for example, 'max256B' information for indicating transparency for 256R / G / B color. In the gAMA (Gamma) information, a value fixed to support sRGB, for example, '(45455 sRGB)' is recorded. However, if sRGB is not used, other values can be recorded.

  The cHRM (Primary chromaticities) information includes 'White point x' information, 'White point y' information, 'Red point x' information, 'Red point y' information, 'Green point x information', and 'Green point x' information. 'Information', 'Blue point x' information, and 'Blue point y' information are included.

  The cHRM information may further include sRGB (Standard RGB color space) information and pHYs (Physical pixel dimensions) information. 'Pixels per unit x' recorded in the pHYs information indicates, for example, a screen ratio of 4: 3 or 16: 9, and 'Pixels per unit y' is recorded, for example, as a value indicating NTSC or PAL.

  Further, as shown in FIG. 10, JHDR (JNG header) information corresponding to the main JNG chunk in the JNG file of animation data includes “Width” (0 to 720) for limiting the screen area and height. ) And “Height” (0 to 480 (576)) information, and also include “Color type” information, “Image_sample_depth” information, “Image_Compression method” information, and “Image_interlace_method” information.

  In the “Image_sample_depth” information, a value “0x08” for limiting the bit size of the image sample data used in the JPEG file to 8 bits, for example, is recorded, and the “Image_Compression method” information is, for example, ISO10918 limited by IDVD. −1 Huffman-encoded JPEG compression method is used, and “0x00” value is recorded in the “Image_interlace_method” information so that only sequential compression can be supported.

  The JHDR information further includes, for example, 'Alpha_sample_depth' information, 'Alpha_compression_method' information, 'Alpha_filter_method' information, and 'Alpha_interlace_method' information. α (Alpha) corresponds to transparency, and the “Alpha_sample_depth” information indicates, for example, one α value. If the value is 4, for example, the number of 2 is raised to the fourth power. be able to.

  The 'Alpha_interlace_method' information is recorded with, for example, a '0x00' value that does not support the interlace function, the actual image data is recorded in the JDAT (Image Data) information, and IEND information (notifying the end of the JNG file) In the MEND), for example, an empty chunk is recorded.

  On the other hand, as shown in FIG. 11, in the gAMA (Gamma) information corresponding to the auxiliary JNG chunk in the JNG file, a value fixed to support sRGB, for example, '(45455sRGB)' is recorded, and cHRM (Primary chromaticities) information includes, for example, 'White point x' information, 'White point y' information, 'Red point x' information, 'Red point y' information, 'Green point x' information, 'Green point' information , 'Blue point x' information and 'Blue point y' information are recorded.

  The cHRM information further includes sRGB (Standard RGB color space) information and pHYs (Physical pixel dimensions) information. 'Pixels per unit x' recorded in the pHYs information indicates, for example, a screen ratio of 4: 3 or 16: 9, and 'Pixels per unit y' stores, for example, a value indicating NTSC or PAL.

  In an interactive optical disc player for reproducing main A / V data and content data of a content disc, the system according to the present invention converts an MNG file of animation data contained in content data received from an interactive DVD or a content server to PNG Separate files and JNG files.

  This system decodes the image data included in each file, refers to the control information included in the file, and reproduces the image data as various animation images. Can be efficiently linked with the main A / V data and reproduced.

  The programs, modules, processes, etc. described herein are for illustrative purposes only and are not related or limited to any particular computer, apparatus, or computer program language. Rather, various forms of general purpose computer machines or devices may be used with the logic code implemented by the features of the present invention.

  Also, the order of performing the steps in the method according to the invention has been described by way of example. In fact, the steps can be performed in any order or in parallel, unless otherwise presented in the present invention. The method according to the present invention can be implemented in hardware, software, or a combination thereof, which are terms currently known in the technical field to which the present invention belongs.

  In particular, the method according to the invention can be executed by software, firmware, macro code running on any type of computer. Also, software implementing the present invention can be configured as computer instructions on a medium such as a ROM, RAM, magnetic medium, perforated tape or card, CD, or DVD.

  The software may also be in the form of a computer signal carried on a carrier wave or accessed via a computer web page linked via the Internet. Accordingly, the present invention is not limited to a particular platform, unless presented differently in the present invention.

  As described above, a method and system for managing animation data on an interactive disc have been provided. Although the present invention has been described with reference to the preferred embodiments, those skilled in the art can make changes and modifications to the preferred embodiments within the scope of the invention.

  The described embodiments are to be considered merely as examples in all respects and are not limited in any way. Accordingly, other embodiments, system structures, platforms, and devices that can support many aspects of the present invention can be utilized without departing from the described technical features of the present invention.

  Adaptations and combinations of the features of the described embodiments are included within the scope of the invention. The present invention is limited by the claims and their equivalents.

1 illustrates a configuration of an interactive disc player for managing animation data and attribute information thereof on an interactive optical disc according to an embodiment of the present invention. 4 illustrates a method of reproducing interactive DVD A / V data and animation data according to an exemplary embodiment of the present invention. 2 illustrates a graphic file structure of animation data according to an embodiment of the present invention. 2 illustrates a configuration for an animation decoder that is part of the element decoder of the interactive disc player of FIG. 1 according to one embodiment of the present invention. The data structure for the graphic file structure is shown. The data structure for the graphic file structure is shown. The data structure for the graphic file structure is shown. Fig. 6 illustrates another embodiment for a graphic file structure. Fig. 6 illustrates another embodiment for a graphic file structure. Fig. 4 illustrates a further embodiment for a graphic file structure according to the present invention. FIG. 6 shows still another embodiment of a graphic file structure according to the present invention. FIG. FIG. 6 shows still another embodiment of a graphic file structure according to the present invention. FIG.

Claims (17)

Receiving first graphic information including animation data from a first source, associated with audio / video (A / V) data and including an MNG (Multimedia Network Graphics) file;
Extracting second graphic information including a PNG (Portable Network Graphics) file from the first graphic information;
Decoding the second graphic information into the first image data; and reproducing the animation data through an enhanced navigation player based on the control data; and reproducing the first image data as an animation image.   The method further includes extracting first control data from the first graphic information, wherein the first control data includes MNG (Multimedia Network Graphics) control information, and the first control data includes frame size information and frame rate. The method of claim 1 comprising information.   The method further includes extracting second control data from the second graphic information, wherein the second control data includes PNG (Portable Network Graphics) control information, and the second control data includes “bit depth”, “ The method according to claim 2, comprising at least one of “color type”, “compression method”, “filter method”, and “interlace method”.   The method of claim 2, wherein the first control data further includes at least one of physical pixel size information, standard RGB information, gamma information, chromaticity information, palette information, and transparency information.   The method of claim 2, wherein the first control data further includes global palette information.   The first source is an enhanced storage medium or a content server, and the receiving step includes reading the first graphic information from the enhanced storage medium when the first source is the enhanced storage medium. The method of claim 1. A first decoder for decoding first graphic information composed of animation data associated with audio / video (A / V) data, including MNG (Multimedia Network Graphics) files;
A second decoder for decoding a PNG (Portable Network Graphics) file and second graphic information from the first graphic information as decoded first image data;
An apparatus for reproducing animation data including an image manager that receives the decoded first image data and reproduces an animation image based on control data.   The first decoder and the second decoder extract first and second control information from the first and second graphic information, respectively, and the first control data includes MNG (Multimedia Network Graphics) control information. The second control data includes PNG (Portable Network Graphics) control information, and the image manager is based on at least one of MNG (Multimedia Network Graphics) control information and PNG (Portable Network Graphics) control information. The apparatus according to claim 7, wherein the apparatus reproduces an animation image.   8. The apparatus of claim 7, further comprising a read unit for reading the first graphic information from an enhanced storage medium. 8. The apparatus of claim 7, further comprising a network manager for receiving the first graphic information from a content server; and a data storage for temporarily storing the first graphic information received from the content server.   8. The apparatus of claim 7, wherein the first graphic information includes an MNG (Multimedia Network Graphics) data chunk and a PNG (Portable Network Graphics) data chunk.   The apparatus of claim 11, wherein the MNG data chunk includes MNG header information and MNG end information, and the MNG header includes the control data for controlling reproduction of the object image data.   The apparatus of claim 11, wherein the PNG data chunk includes PNG header information, PNG end information, and object image data, and the PNG header information includes control data for controlling reproduction of the object image data. .   A document file including at least one of a markup, a cascading style sheet, and a script language, and enhanced content data including image data composed of MNG (Multimedia Network Graphics) having an animation image, the MNG file including: An enhanced storage medium composed of MNG chunk data and PNG (Portable Network Graphics) chunk data including object image data.   The enhanced storage medium of claim 14, wherein the MNG file further includes JPEG image data.   The PNG chunk data further includes PNG header information, PNG end information, and object image data. The PNG header information includes bit depth information, color type information, compression method information, filter method information, and interlace method information. The enhanced storage medium of claim 14, comprising at least one.   The enhanced storage medium according to claim 14, wherein the MNG chunk data includes an MNG header including frame size information and frame rate information, and an MNG end identifier.

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