TWI332791B - Digital video recorder, digital video system, and video playback method thereof - Google Patents

Description

1332791 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to digital video technology, and more particularly to an image playback method for use in a digital video recording device. [Prior Art] # 棚人电脑 or other digital (4) processing and storage systems, all need to use a specific file system (10) system) for its storage space configuration and access management 'currently more common file system including FAT32 (File Allocation Table 32-bit version) ^ NTFS (New Technology File

System) and other specifications. Among them, the case that meets the specifications of the 2-slot system is a file with a -4Gbyte file. In the past, the upper limit of the file size did not cause too much trouble in the storage and reading of the slot. After all, in the past In the application of computers or information products, there is rarely a single case where there is more than 4 Gbytes of data.

Ik's progress in semi-V body technology, the processing power of various electronic products is getting stronger and stronger. 'The unit price of storage space is getting lower and lower, making various devices store and process large-quantity dragon-shooting energy' in response to this trend. The most developed field is in 6 1332791 in terms of multimedia audio and video specifications, for example, in image specifications, from the past standard definition (SD) images to the current high image quality (high definition) , HD) images, and in terms of hardware, there are products such as digital TV, digital set-top box (sett〇pb〇x, STB), and digital video recorder (DVR). The advent of these developments is based on the development of science and technology, hoping to bring better audiovisual experience and more convenient use mode to the viewers. However, in such a trend, if the FAT32 file system has a cap on the size of a single file, it will cause inconvenience in file management and dissatisfaction in audio-visual enjoyment. This is due to the current and future multimedia video formats. After the storage, the amount of data generated exceeds a dozen Gbytes, and the audio-visual information (such as the same movie) belonging to the same content is bound to be stored in a plurality of individual files, resulting in inconvenient file management and difficulty in reading. The same ## situation will also occur in image compression technology or other multimedia video processing technology. For example, the compressed file generated by DivX video coding technology, i.e., the size of lGbyte will also cause the same as above. result. Digital W-like devices such as digital video recording, or digital on-board or digital TV with built-in digital video and playback functions, are required to play the previously recorded t, or multiple downloaded from other places. When there is an image file with the upper limit of the size, but in fact it is the same as the content of 7 1332791 (such as the same movie), the method adopted is only to judge the file under the alphabetical order of the file name when playing a file. Performing automatic playback of the file, this processing method is not actually a grouping of files belonging to the same content, so if there is a non-partition between the files in the same valley in alphabetical order The extra file of the content, the system will not be able to exclude it and still play; when you want to perform the same content (such as the same movie), the scope of the standard can only be compared with the currently playing block. The case can not be carried out across the ages; and the inevitable video pauses and discontinuities between the playback of the tow and the beginning of the next---fourth One poor viewer experience viewing the main reason. SUMMARY OF THE INVENTION A digital video device and related information of a file. Therefore, one of the objects of the present invention is to provide a digital video playing method, in which a lion will belong to the same file-data structure of the same content to record The purpose of smoothly playing the image is to expose a kind of scale device, which is packaged

According to an embodiment of the present invention, there is provided a storage device; a processing device j'332791 in the device and a wire generating-needle data structure, the clock data structure comprising a plurality of (four) materials 'dividing in the complex image file; And a display device, connected to the processing circuit, for displaying the video content of the plurality of image files; wherein when the video content is displayed, the processing circuit searches and compares the index data structure according to the time count value The first position in the plurality of image slots of the mosquitoes to be read by the mosquitoes, the first image, and the first image file. According to an embodiment of the present invention, a digital image system is further disclosed, which comprises a plurality of data, and the image is included in the plurality of images and a display device.

Containing a storage device, and looking at the length of the hoof; - [Lai, coupled to the storage device, 'hiding maintenance-(four) 丨f material structure, the seven-dimensional data structure is packaged 'coupled to the first-logic, Receiving and displaying the video content of the plurality of image rights from the first logic; wherein, when displaying the video content, the first logic is scaly and tasted according to the time-time value to determine the desired read Take the fiber (4) kl - the first position of the first image file in the shaft wheel. According to an embodiment of the present invention, the method further discloses that the method 9 11332791 includes a production-primary data structure, a section data, and a pain η ～ 弓 卜 卜 身 、 、 、 、 、 、 、 包含 包含 包含Knife should be in the fine time count value corresponding to the desired maintenance time-time count value 'which causes the cable to be sneaked into the storage ^ 现 现 现 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; -影:::'::定: Read a content. 中中.海第健, to display the video [Embodiment] The following description of the embodiment of the present invention is performed by a digital video recorder and/or It exemplifies the main components included in the __ _ __ chip as an example, but those skilled in the art should understand that the application field of the invention is not limited to this. Others have digital video/ The playback function or the built-in digital display of the digital video control chip; the image device, such as digital computer, digital TV, game host material, and even other electronic devices that continuously play a plurality of difficult requirements belonging to the same β-capacity /Multimedia products, can use this The method of the present invention. «Monday refers to FIG. 1 , which shows a digital image system 13327791 according to the present invention - for example, a digital video recorder, a digital on-board box, a digital television, a game console, and various devices as described above. A schematic diagram of a control chip or other device or product or a control chip thereof. In FIG. 1, a main component of a digital image device 1 includes a TV decoder 110. The microprocessor 120 and a television encoder (13), it should be noted that, in addition to the above-mentioned main constituent elements, the digital image device 1 can be further included according to the application field. There are other components, such as audio input and output interface, Ethernet module, IEEE1394 interface, USB interface, DDR control module, flash memory control module, various peripheral interface modules (such as Gpl〇, UART, & etc., since these components are not the focus of the present invention, they will not be described here. In the present embodiment, the digital video device 1 is connected to the television decoder 11 - a video source 14 〇 (for example, a video stream transmitted over a network, or a television signal from a central office) to receive a video signal from a video source 140. The television decoder 11 is used to The received video signal is subjected to a decoding operation, for example, a data format in which the NTSC, PAL, and/or SECA1VU video signals are decoded in the digital frequency, and in the present embodiment, the 'TV decoder 11G system includes four groups. An analog-to-digital converter of 1G bits, with 2D and 3D comb choppers (c〇mb fiiter) for luminance/chroma 11 1332791 separation processing (YC separation). The microprocessor 120 is coupled to the television decoder U, the television encoder 130, and a mass data storage device, such as a hard disk 150 'the microprocessor 120 is used to decode the video signal from the television decoder 11 The processing is performed, and the hard disk 150 is accessed to transmit the processed video signal to the television encoder 130. In this embodiment, the microprocessor 12 is processed by one or more digital signals (digital signal processing). A circuit and/or a microprocessor circuit (such as MIPS). The television encoder 130 is coupled to a display device 16 (for example, a flat display screen of a television or a display) for encoding the video signal processed by the microprocessor 120, for example, a digit 4:2. The video format of the 2 format is encoded into various standard television signals, such as NTSC, PAL CVBS, S-video signals, individual νυν or RGB output signals, etc. In this example, the television encoder 130 includes six 12 A digital analog converter of bits. Referring to Fig. 2, there is shown a processing path diagram of the video information received by the digital video device 1 in the first embodiment of the present invention in accordance with an embodiment of the present invention. In Section 2®, each party's financial representative is the processing or operation of each component in the diagram, which will be described in detail below. After the digital video device receives the video signal from the source 140, the television decoding operation 210 is first performed by the television decoding 12 1332791 210. The operation content is as described above, after the television decoding operation 210 is completed. 'The television decoder 210 will transmit the video signal after the decoding operation to the microprocessor 12'. The microprocessor 12 will first perform the video pre-processing 222 on the video signal, in general, the front-end Processing (pre_p_ssing) will perform filtering operations or other image processing operations on the video signal to reduce or eliminate the noise-generating county. After the pre-processing, the video # signal will enter two different processing paths respectively. In the first path, the pre-processed video signal will be directly transmitted to the TV encoder 13 to perform - a television encoding operation 230, the operation content of which is as described above, and the video information system after the encoding operation is transmitted to the display device (10) to perform the playback operation threat, and the second hand is processed after the second hand is processed. The system will then be implicitly executed by the microprocessor 224 - MPEG2 encoding operation, or other data compression operation to compress the amount of data for storage in the hard disk 150 (ie, video data storage operation 250), in the presence of The required timing (as exemplified below), the previously stored compressed beaker will be read out, and the microprocessor 12q will perform it - MPEG2 decoding operation 2% 'to replenish the job, then The video signal after decompression is processed by the television encoding operation 23 and the playback operation (10) to play the video signal. 13 1332791 It should be noted that the microprocessor 120 compresses the video signal in the second path to facilitate its storage, and also adds a timestamp to the Wei signal, which is convenient for digits. The image device 1 identifies the time point at which each portion of the image is located. The technical aspects of the video signal stamping time stamp are widely known to those skilled in the art, so the details will not be described here. If the embodiment of the present invention does not resemble the conventional processing method, only the previously stored video data can be read and played back from the storage device, which will result in the instant content 〇ivee_nt) The user of the demand must endure - significant delay in the coffee (or even a long job second), _ provide a resolution processing job (ie _1 - Jian), its miscellaneous honours after a pre-processing "in the After reading the hard disk _> reading the hard disk ·> solution [reduced decoding _ in the case of 'directing the video signal output play, to ensure that the user can see the "right gpfl main, a, "The Vision" is not required because of the access to the hard disk _ extra coffee. Such a Wei is significant in the case where the user and the second viewing wire are very concerned (for example, watching a sports event on the spot, or paying for a movie). In addition, the embodiment of the present invention provides a second path for the playback and storage of the pre-processed video signal, in addition to the first path of the instant playback, which is considered to be the user's request for viewing the instant content. In addition, there will be a need to pause viewing and replay at any time and/or to perform a referral or seek for content that has already been played. For example, when a user intends to continue viewing during a period of viewing a live content (for example, pressing the pause "pause"), if he does not wish to miss any moment in the content, The details can be used to perform appropriate operations on the digital video device (for example, press the "PLAY" button again). At this time, the microprocessor m generates a corresponding control signal CTRL' to select (indicated by the multiplexer 228). Read from the hard disk (9) and after the MPEG2 decoding operation, the image that is presented is the content of the (4) silk pause. _ ground, when the Langer has the need to rewind or search (magnetic (4)) for the content that has already been played, it can be used for the operation of the touch (4). (4) Press T·News “REW” "Qing" or operating the shuttle "shuttle"), the microprocessor 12 will generate a corresponding control signal CTRL, read from the hard disk 15 并 and after the MPEG2 decoding operation video The signal, and according to the time point corresponding to the user's operation, output the playback content with the correct time stamp. In addition to the above remaining works, the Langer can also choose to return to the viewing of the most 1332791 real-time content at any time, as long as the appropriate operation (such as pressing the instant play button "LIVE"), then the microprocessor 120 will A corresponding control signal CTRL ' is generated to reproduce the content again by the video efl said, which is generated after the pre-processing of the county, is not reduced and stored. It should be noted that, in the above embodiment, the television decoding operation 210 and the television encoding operation 230 are implemented by a dedicated television decoder circuit and a television encoder circuit, respectively, and the video pre-processing 222, The MpEG2 encoding operation and the MPEG2 decoding operation are implemented by the microprocessor 12 in conjunction with the operation of the software or the body code. However, it should be understood by those skilled in the art that the present invention is not limited thereto. Both the operation and the functions provided can be implemented by a dedicated hardware circuit, software code, or a combination of the two. Furthermore, in the present embodiment, the digital video device 1 includes a television decoder 11 for converting analog video signals into digital video signals, and a television for converting digital video signals into digital video signals. The encoder 13 is not limited thereto. In the case where the video signal transmitted from the video material source 140 is originally a digital format, the television decoder 110 is an unnecessary component and the display device at the rear end. In the case where the 160 has a digital signal interface and is capable of accepting digital video signals, the television encoder 130 is also an unnecessary component. In the present embodiment, although the hard disk of the digital video device (8) is exemplified by the gorge or the digital video device (8), the present invention is not such a secret, and other remote devices such as those connected through the scales are also An example. In the embodiment, the digital video device first compresses the video signal when it is stored to save the access bandwidth or the storage space. However, the present invention is not based on the other embodiments. The towel can also be directly stored in the storage device 150 without compressing the video signal. Please refer to FIG. 3 again, which shows a plurality of images of the same content (such as the same movie) stored in the hard disk 150 or received via the network or other data source. Schematic diagram of the file. As shown in Figure 3, video data belonging to the same content is sequentially stored into five files, which are 2Gbyte "video.001", 1Gbyte rvide〇〇〇2", and 〇5Gbyte "video.003". 2Gbyte of "video.004", 1Gbyte of Γ_〇〇〇5", where the information stored in video.002 is the content chronologically connected after video.OOl, and video 〇〇3 The information stored in the text is in the chronological order of the content after the video, and so on. The reason why the video data is stored in multiple files may be due to the file system used (such as FAT32) or the encoding technology used (such as DivX) added to the single-file size. A plurality of ages may be transmitted from (4) sources to 17 5 hours (such as through the network), ie, in the form of individual files, or in the case of micro-disciplinary 12G compression coding, the order between the initials is stored in Wei. Into a number of individual files, and stored in the hard disk 15 。. In the embodiment of the present invention, the digital image device is configured to receive or form the plurality of image files belonging to the same content, and the image images are stored on the hard disk 15G+. And the age of the 帛 帛 指向 指向 指向 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 m m m m m m m m m m m m m m m m m m m m m m m m m m m A schematic diagram of the corresponding meaning. At the 4th hour, the index # material structure contains a plurality of entries (the entry of the towel), and each of the pens should be in one of the plurality of image files, for example, the first data 41 corresponds to the video. .OOl '苐二笔资料420 corresponds to ¥0.〇〇2, and so on. Referring again to Figure 5, there is shown a schematic diagram of what is included in the index data structure 400 of Figure 4 in accordance with an embodiment of the present invention. In the index data structure 4', corresponding to the parent data, the system includes a "slot name" field 460, a "file size" field 470, and optionally a "cumulative file size" block. 480. 1332791 wherein the 'File Name' field 460 is used to indicate the file name of each individual case according to the temporal order of the content of the video material, for example, in the file name of the first data in the figure 5 The system is "vide〇〇〇i", the "File Name" field of the second data is "video.002", and so on. The "File Name" field of the fifth data is "videaG()". 5". The "File Size" block 47 is used to indicate the size of the corresponding job name for each data towel. For example, in Figure 5, the "File Size" field of the first data is Wd (7). The size is 2Gbyte 'The size of the second file is "1", which is the size of ν·〇〇2, and so on. The fifth (4) "size" block is the size of videa005, which is 1Gbyte. . If you choose to use the "cumulative file size" block 480, then the block is used to store the size of the file since the first data. For example, in Figure 5, the "Dragon Drum" block is based on The order stores 2Gbyte, 3Gbyte, 3.5Gbyte, 5.5Gbyte, and 6.5Gbyte. In this example, the digital view > like the device will search for the stored money bank at the appropriate timing, such as when initializing, or when opening a specific job directory (10), Each of the characteristics of the hidden file (4) (for example, in the case of this embodiment, all the cases with the beginning of "(4)(7)")" then fill in the relevant information of these jobs and index the information generated by them ^ 19 丄夕夕厶/y丄4 〇 ' ' and the index data structure is temporarily stored in a memory (for example, a dynamic random access (4), not _ wealth). The method for maintaining the structure of the lead-and-sand structure disclosed herein is not the condition of (4), and other persons familiar with the technology or the method of generating and transferring can also be applied to the present invention 'for example, The index data structure can also be stored in the form of a building. Furthermore, the index data structure in the present embodiment includes, in addition to the information of each of the blocks as described above, the signal format G of the incoming party may be further included as NTSC $胤). God (_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ After the index data structure is 4, the digital image device 1 can quickly find the video currently to be played by reading the information stored in the index data structure 4 and adding a simple index operation. The content is located in which of the plurality of image files, and then accesses the location of the file to be correctly played to play the video content correctly. Please refer to Figure 6, which is A schematic diagram showing the correspondence between the video content played by the digital video device and the plurality of video files according to an embodiment of the present invention is shown in Fig. 20 1332791

In the sixth embodiment, the operation interface 5i of the digital image device, the remote operation interface 520, and the display surface 530 are displayed. In the embodiment, the operation interface 51 includes the control video playback. Operating functions, such as "play", "rewind", "fastforward" buttons, or other functions, and remote operation interface 520 (such as a remote control) In addition to the various operating buttons described above, it also includes a shuttle knob that can be used to quickly find a video clip of the desired viewing content. In Fig. 6, a time axis 540 is further shown. It should be noted that the time axis crossbar 54〇 may be part of the playback operation interface actually belonging to the digital image device, and may be The drag operation (dmg) is applied to determine the desired time point or it may also be used only in the present embodiment to represent the time index of the video content placed in the embodiment, and is not actually displayed in the operation. In the interface.

When the user presses the regeneration (for example, when the user presses the regeneration (4), the digital image device will continue to maintain a time count value, ^ to indicate the time point of the content currently being played, by continuously increasing The time meter: the video content can be played in order, within the video (4) ^ with the Qing Dynasty like Shelton, the corresponding 46 wealthy, listen to her _ health pole job 21 1332791 to represent the various files The inner valley index of the negative material position ((7) is such that the 丨in(jex) 550 system has a one-to-one correspondence. Therefore, the time count value maintained by the digital image device 1〇〇 can be converted into the corresponding data position. And searching and comparing the index data structure 400 in FIG. 5 to determine which location in the file of the plurality of image files is the video content at the time point currently being played. For example, if the user presses the regeneration button, the time point played is located at one hour and twenty-five minutes of the video content, the time point/data amount conversion, and the index data structure 400. After searching and comparing (for example, searching and comparing the "file size" field 470), the data location corresponding to the current time point can be obtained (2Gbyte + lGbyte + 〇.5Gbyte) = 35Gbyte and (2Gbyte + 1) Gbyte + 0.5Gbyte + 2Gbyte ) = 5.5Gbyte (or, you can also directly search and compare the "accumulated file size" field 48〇), which is located in the file video.004, and it is in the file. The exact position can also be obtained according to a conversion formula or a proportional relationship, so that the digital video device can correctly access the video data located in video.004 and broadcast it, and as the video content is broadcasted in sequence, the office The time point of playback enters the data location stored in the next file (for example, two hours of the video content), and also passes through 22 1332791 * time point / data volume conversion, and search for index data structure 400 and After the comparison, it is also very quick to get the data location corresponding to the current time point in the file video.005, and its exact location, digital image Similarly, the device 1 can correctly access the video data located in video.005 and play it out. When performing the operations such as inversion, searching, etc. on the video content being played, for example, pressing the reverse button and operating The shuttle knob on the remote control 520, or the cursor on the timeline rail 540, may further illustrate the benefits of the present invention, particularly in the reverse or search operation across files. In the same example as before, That is, the time point of the playback is located at -25 minutes of the video content, and the corresponding data location is located in the video.004 file. If this time reverses or searches for the result of the operation, the playback is performed. The time point falls within one hour and five minutes of the video content. • The time point/data volume conversion and the search and comparison of the index data structure are the same. The corresponding data location is located in the file of Video.003 and its exact location, so that the digital video device 1GG can correctly access the information in the vide_ and Out. It is particularly noteworthy that the video material accessed by the digital imaging device 1 in the inversion or search operation in this example was originally from sulfur. Shizhong ^ was taken out, and later it was taken out from Vide〇.003. Such an operation was carried out according to the operation of 23 U02791 A beaker, especially the reverse (baek 丽d) cross-mesh operation of storing video data. In the conventional method, it cannot be achieved, but through the generation and use of the index data structure disclosed and illustrated in the embodiments of the present invention, the job requires some simple search file contents and comparative arithmetic operations, which can be easily achieved. It is desirable here that although in the above embodiment, the cable structure is stored in a small drum (or a size) (4), the person skilled in the art should understand that the present invention does not The limit index data structure _ can also store the square wire processing corresponding to the time stamp of the beginning and/or the end position of the file content, and can also be used for the purpose of (4). Furthermore, since the information is arranged in the manner that each piece of data corresponds to a slot name and its slot number II:: imprint, the cable/ _ digital image device of the present invention is used. In the image file of the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 'You can find the correct image file. Relatively speaking, the small warehouse data structure can achieve seamless cross-archive video search and playback operations without the seams 24 1332791 (seamless), instead of causing users to play in the cross-slot case as in the conventional technology. It is necessary to endure unpleasant audiovisual encounters such as pauses or interruptions, and problems such as the inability to perform cross-over-reverse miscellaneous work. In addition, the fine-grained operation interface of the digital image device with the cable structure of the cable structure according to the embodiment of the present invention can also be designed and managed by the secret index data structure, so that the user The interface of the application software only needs to be in contact with content_based instead of "file-based" #information, which will make the interface management of the application software more concise. And intuition. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should fall within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a digital image (four) system according to the present (four)-solid detail; FIG. 2 is a processing path of video data received by a digital image device in accordance with an embodiment of the present invention. Figure 3 is a schematic diagram of a plurality of image files belonging to the same content; - Figure 4 is a schematic diagram showing the correspondence between the cable structure 4GG and the image file 25 according to the present invention - the fifth embodiment; The figure is a schematic diagram of the content contained in the *51 data structure 400 in FIG. 4 according to an embodiment of the present invention; and FIG. 6 is a video played when the digital image is loaded according to the embodiment of the present embodiment. A schematic diagram of the correspondence between the content and the plurality of image files. [Main component symbol description] 100 110 120 130 140 Digital video device ------ TV decoder -------- Microprocessor ---~- TV encoder --- audio and video data source 150 storage device 160 display device 210

222 224 226 TV Decoding Operation ------ Microprocessor Operation ----- Video Pre-Processing ----- MPEG2 Editing Operation MPEG2 Decoding Operation 26 1332791 228 Select Operation 230 TV Encoding Operation 250 Video Information Storage 260 Playback Operation 400 Index Data Structure 410-450 Data 460 File Name Field 470 File Size Field 480 Total File Size Field 510 Operation Interface 520 Remote Operation Interface 530 Display Face 540 Timeline Crossbar (Time Indicator) 550 Content indicator 27

Claims (1)

Patent application scope: A digital video recording device, comprising: a storage device; a processing circuit that touches the storage device to store the video signal, and stores the video signal in the form of a plurality of image files in the storage device. The towel, and the silk material: #料结构 The index data lion includes a plurality of pens (four) corresponding to the plurality of image files; and a display device ' _ for the processing circuit for displaying the plurality of image files The video content is: when the video content is displayed, the processing circuit searches and compares the index data structure according to the time count value to determine one of the plurality of image files to be read. And a first location in the first image file. For example, the chrome device described in the first item of the above-mentioned H, further includes a decoding device connected to the processing circuit for performing analog digital conversion on the received video signal. 3. The digital video recording device according to claim 1 of the patent application, further comprising an encoding device between the secret circuit and the Wei display device, and the image storage device for storing the miscellaneous recording towel The video signal is digitally analog converted. #4. The digital video recording device of claim 1, wherein the processing circuit is further configured to decompress the image standard read from the bribe device. .5. The digital video recording device of claim 1, wherein the data structure of the cable is included in the hard-to-find name of the images. #6如/Please refer to the digital video recording device of the first aspect of the patent, wherein the index data structure includes the file size of the image buildings. 7. A digital imaging system comprising: - a storage device for storing a plurality of image buildings; a first logic - _ for the storage device for maintaining an "axis data node." Na contains a plurality of pens, respectively, for 29 丄 791 should be in the plurality of image files; and - display device ' __ _ _ _, silk rotation - logic to receive and display the video content of the plurality of image files; When the time period is displayed, the first logic searches and compares the index data structure according to the time count value to determine the first image slot and the first image slot to be read. One of the first locations in an image file. 8. The digital video system of claim 7, further comprising a decoding device for hiding from the first logic for analog digital conversion of the received video signal. 9. The digital imaging system of claim 7, further comprising: an encoding device </ br> between the first logic and the display device for storing the images stored in the Lai Wei towel The video signal corresponding to the file is digitally analog converted. H). For the digital image system described in claim 7 of the patent application, the application of the fourth to fourth series is used to decompress the image file read from the storage device towel into the 30 1332791 line. 1L = The digital image system described in claim 7 of the patent scope, wherein the material structure includes the file names of the image files. 2·2%% patent_The digital image system described in Item 7, the structure of the poor material contains the file size of the image files. Φ 14. The digital image system of claim 7, wherein the read storage device is a remote device connected to the first logic via a network. An image playing method, comprising: generating a cable structure, wherein the index data structure comprises pen data corresponding to a plurality of image files, a maintenance-time count value, wherein the time count; The video content is searched and compared according to the time count value, and r determines the 乂M plural file in the plurality of image slots to be read and the first image file. The first first image set and the 1327791 read the first position in the first image file to display the video content. 15. The video playback method of claim 14, wherein the index data structure includes file names of the image files. 16. The video playback method of claim 14, wherein the index data structure includes a file size of the image files. 17. The video playback method of claim 16, further comprising comparing a data location corresponding to the time count value and a file size stored in the index data structure to determine the first image file and the First position. 18. The video playback method of claim 14, further comprising: providing an application software; and displaying the index data structure in an operation interface of the application software. 32