TWI442769B - Method applied to medium apparatus and associated medium apparatus - Google Patents

Description

Method for applying media device and related media device

The present invention relates to a method and related media device for use in a media device, and more particularly to a method and related media device capable of performing chapter segmentation on the fly while recording.

Media devices capable of recording static and/or motion pictures as multimedia files have been widely used in modern information society; such as CD-ROMs, hard disks and/or memory card recorders, digital cameras, digital video cameras (camcorder) ), a computer with a video capture lens, a tablet computer, a notebook computer, a mobile phone, a personal digital assistant (PDA), a video conferencing system and a driving recorder, and a screen or display capable of recording the playback content. Media devices such as TV systems, TV cards, and TV boxes (desktops) have become very popular and become an important part of information life.

When using multimedia files, if the content of the files has been divided into different chapters, it will be very helpful to play, edit, use and/or manage the multimedia files. The chapters in the multimedia file allow the user (viewer) to quickly jump between different segments (different chapters) in the file without having to perform a time-consuming linear search.

However, in current conventional media devices, chapter segmentation cannot be performed while recording a file. In the prior art, in order to segment a multimedia file, the user must replay the file after the file is recorded to set the chapter during playback. This kind of post-production work is very time consuming and inconvenient for the user.

In fact, in many applications, when recording a multimedia file, the user also monitors the recorded content; if the chapter can be segmented immediately while recording the file, not only can time-consuming post-production work be avoided, but also More in line with the user's intuition, the chapter can be segmented immediately according to the current judgment when the user records the file. The present invention is directed to a technique for enabling chapter segmentation in real time while recording.

One of the objects of the present invention is to provide a method for applying to a media device that can record a multimedia file containing a plurality of frames. The method includes: when the media device records a file, after receiving a chapter segmentation command, selecting a marker frame in the file, and recording a corresponding chapter information for the marker frame; in an embodiment, This marker frame is the first frame of a chapter.

In one embodiment, a temporally closest intra-frame coding frame is selected as the marker frame after the chapter segmentation command. In another embodiment, after receiving the chapter segmentation command, the media device causes the media device to record a frame coded in the frame as the marker frame. The chapter segmentation command can be triggered by the user.

The chapter information of the marker frame is used to locate the marker frame in the file, so that when the multimedia file is played, it can jump to the marker frame to continue playing. The following examples are given when setting chapter information. In one embodiment, the media device records each frame in the file in units of bytes in sequence from a starting byte; according to the order of the tag frame bits relative to the starting byte , you can provide corresponding chapter information for each marker frame. In one embodiment, the media device records the frames in the file in units of bytes in a sequence of bits starting from a first byte after a header; according to the tag frame, the byte is relative to the first The order of a tuple provides chapter information for the marker frame. In an embodiment, when the second chapter segmentation command is received when the file is recorded, a second marker frame is selected in the file, and the second marker frame byte is relative to the marker. The order of the frame tuples can provide and record a corresponding second chapter information for the second marker frame. In an embodiment, the corresponding chapter information may be provided according to the time point of the marked frame. In one embodiment, a corresponding second chapter information is provided and recorded for the second marker frame according to the difference between the second marker frame time point and the marker frame time point.

In one embodiment, the multimedia file includes a header; during the recording of the file, once the chapter segmentation command is received and the chapter information is set, the chapter information is recorded in the header. In one embodiment, the chapter information is recorded (temporarily stored) in a memory; when the media device finishes recording the file (for example, after the frame is no longer added to the file), the chapter information is written into the file.

In conjunction with the chapters added when recording multimedia files, when playing a file, a chapter name can be displayed according to each chapter information. And/or, a thumbnail of the frame corresponding to each chapter information can be displayed when the file is played. When playing the file, you can jump to the frame corresponding to each chapter information and continue playing after receiving a jump command.

It is still another object of the present invention to provide a media device comprising a recording module and a chapter setting module for implementing the method of the present invention. The recording module records the multimedia file; when the recording module records the file, if the chapter setting module receives a chapter segmentation command, the frame coding frame closest to the time can be selected as the basis of the chapter information. Alternatively, when the chapter setting module receives a chapter segmentation command, the recording module can record a frame code frame and use the frame code frame as the basis of the chapter information. In one embodiment, during the recording of the multimedia file, each time the chapter setting module provides a chapter information, the recording module records the chapter information to the file. In another embodiment, during the recording of the multimedia file, the chapter setting module temporarily stores the chapter information in the memory; when the recording module ends the file recording, the chapter information temporarily stored in the memory is recorded into the file.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

Please refer to FIG. 1 , which illustrates a process 100 according to an embodiment of the present invention; the process 100 can be applied to a media device having a multimedia file recording function to implement the function of instant chapter segmentation during recording. The steps of the process 100 can be explained as follows.

Step 102: Start recording, and the media device starts to record the frame in a file.

Step 104: Detect whether one of the end video command or the chapter segmentation command is received. If the chapter segmentation command is received, proceed to step 106; if the end video command is received, proceed to step 110. If the end video command and the chapter segment command are not received, the detection is continued in step 104.

Step 106: If a chapter segmentation command is received, proceed to step 108.

Step 108: In the file being recorded, select an in-frame code frame that is closest in time to the chapter segmentation command as a mark frame, and set a corresponding chapter information for the mark frame, and then The chapter information is recorded in the file. This tag frame also becomes the first frame of a new chapter; its corresponding chapter information is used to locate this tag frame in the file. When you want to play this file, you can jump to this tag frame and continue playing after receiving the jump command. In an embodiment, when the media device records the multimedia file, a file header is created at the beginning of the file, and the file header may have a directory section for recording chapter information. Step 108 is to write the chapter information to the directory section in the file header while the file continues to be recorded.

Step 110: If the end recording command is received, proceed to step 112.

Step 112: End the recording. End the recording of the multimedia file, no longer continue to record the frame in the file.

Modern media devices compress frames as they are recorded, for example, frame compression in accordance with various version specifications of MPEG (Moving Picture Expert Group). Some frames are compressed by inter-frame coding (predictive coding) or bidirectional coding; such coding compression refers to other frames. Therefore, when playing such a frame, you need to refer to other frames to decompress. To use this type of frame as the first frame of a chapter, it takes some time to jump to this section to complete the decompression of this frame based on the other frames.

In order to make the jump of the chapter smoother, step 108 of the process 100 is to select the intra-frame coded frame that is closest in time after selecting the chapter segmentation command as the first frame of the new chapter. Because the frame is not referenced when encoding the frame in the compression box, once you jump to a chapter during playback, the first frame of the chapter can be quickly decompressed and played. However, in another embodiment, the present invention may still select a frame that is not in-frame coded (e.g., an inter-frame coded frame or a bi-directionally coded frame) as the first frame of the chapter.

The execution of the process 100 can be illustrated by the second figure. Figure 2 illustrates an example of a process 100 performed when recording a file 50 (e.g., a multimedia file). The file 50 has a file header 52; with the continuous recording of the file 50, the file header 52 is sequentially added to the data of each frame, such as frames F(i-1), F(i), F(i+1) and F. (j), F(j+1), etc. Among them, the frames labeled with the symbol "X", such as frames F(i-1), F(i), and F(j), are not frame-encoded frames. For example, these frames may be inter-frame encoded. Frame. In contrast, the frames labeled "I", such as frames F(i+1) and F(j+1), are in-frame coded frames. When recording file 50, it is assumed that the user triggers a chapter segmentation command cmdC(n) at time point t1; although time frame t1 is followed by frame F(i), frame F(i) is not in frame Encoding frame. After the time point t1, the in-frame coded picture frame closest to the time point t1 in time is the frame F(i+1). Therefore, the frame F(i+1) can be selected as the first frame of the new chapter, and the related chapter information infoC(n) is recorded to the header 52. At time point t2, a chapter segmentation command cmdC(n+1) is received again, and the first in-frame coding frame F(j+1) after time point t2 can be used as the first chapter of another chapter. For the frame, the corresponding chapter information infoC(n+1) is also written to the header 52.

Some media devices compress and record in-frame coded frames in the file periodically and periodically during recording of the multimedia file; the process 100 can be applied to such media devices because such media devices can be provided in the frame periodically. Encode the frame as a candidate for the new chapter. For example, a media device that pays more attention to the image quality of the recorded file will periodically record the in-frame coded frame. Since the in-frame coded frame will appear periodically in the file, whenever the chapter segmentation command is received, an in-frame coded frame will appear as the first frame of the new chapter soon after the chapter segmentation command.

In an embodiment, the first frame of each chapter has a corresponding chapter information, and each chapter information locates a first frame of the corresponding chapter in the multimedia file, so that when the file is played, it can jump to The first frame of each chapter continues to play. Please refer to FIG. 3, which is a schematic diagram of positioning each chapter frame according to an embodiment of the present invention. When the media device records a digital multimedia file 50, it can record the file 50 in units of bytes. As shown in FIG. 3, the file 50 records the header 52 in the byte B(1), B(2) to B(Nh) in the byte sequence, with the byte B (Nh+1) to B. (Nh+N(1)) records the first frame F(1), and records the i-th with the byte B (Nh+N(i-1)+1) to B(Nh+N(i)) Frame F(i) (where i is greater than 1), and so on. However, the present invention can set chapter information for the mark frame of each chapter (ie, the first frame of each chapter) according to the order (or address) of the byte.

In one embodiment, since the byte B(1) is the starting byte of the entire file 50, the chapter information can be set according to the order of each tag frame byte relative to the byte B(1). For example, suppose the first frame of the first chapter is frame F(i+1), because its first byte is B(Nh+N(i)+1), so it can be followed. The sequence (Nh+N(i)+1) is used to record the chapter information corresponding to this chapter. Similarly, if the first frame of the second chapter is F(j+1), since its first byte is B(Nh+N(j)+1), it can be ordered according to the order (Nh). +N(j)+1) to record the chapter information for this second chapter, and so on.

In another embodiment, since the file 50 records the frames in the file in units of bytes in sequence from the first byte B (Nh+1) after the file header 52, it can be based on each mark map. The first bit of each chapter is located relative to the order of the first byte B (Nh + 1). For the first frame F(i+1) of the first chapter, since its first byte B (Nh+N(i)+1) is the first (N(i)+ after the head 52 1) a byte, so the chapter information can be defined according to its order (N(i)+1); for the first frame F(j+1) of the second chapter, it can be based on the order (N(j) ) +1) Set its chapter information.

In still another embodiment, when the corresponding chapter information is provided for a current marker frame, the chapter may be defined for the current marker frame according to the relative order between the current marker frame byte and the previously marked frame byte. News. For example, for the first frame F(i+1) of the first chapter, according to the order of its first byte B (Nh+N(i)+1) (Nh+N(i) +1) define its chapter information; for the first frame F(j+1) of the second chapter, due to the first byte B of the frame F(j+1) (Nh+N(j) +1) is the (N(j)-N(i)) byte after the byte B (Nh+N(i)+1), so it can be ordered according to the order (N(j)-N(i) )) to set the chapter information of the second chapter. That is, suppose the first frame of the kth chapter is the frame F(k1+1) (the first byte of which is the byte B (Nh+N(k1)+1)), The first frame of the (k+1) chapter is the frame F(k2+1) (the first byte is the byte B (Nh+N(k2)+1)), then the bit is based on the bit The relative order difference (N(k2)-N(k1)) between group B(Nh+N(k1)+1) and byte B(Nh+N(k2)+1) is the (k+1) ) Chapters set chapter information. When the file 50 is played, if you want to jump from the kth chapter to the (k+1)th chapter, just add the chapter information of the kth chapter to the chapter information of the (k+1)th chapter. The first frame of the (k+1)th chapter is located and continues to be played by the frame.

In another embodiment, for the first frame F(i+1) of the first chapter, its chapter is defined according to the order of its first byte after the header 52 (N(i)+1). Information; for the first frame F(j+1) of the second chapter, the chapter information is set according to the relative order (N(j)-N(i)). That is, assume that the marker frame of the kth chapter is the frame F(k1+1) (the first byte of which is the byte B (Nh+N(k1)+1)), the (k The label frame of +1) chapters is frame F(k2+1) (the first byte is byte B (Nh+N(k2)+1)), then according to byte B (Nh) +N(k2)+1) sets the chapter information for the (k+1)th chapter relative to the order of the byte B(Nh+N(k1)+1) (N(k2)-N(k1)) .

In the embodiment of FIG. 3, the number of bytes occupied by each frame may be different. The first byte of each frame (such as the byte B (Nh+N(i-1)+1) in frame F(i)) may be the frame header of each frame; The content of the box header can be a fixed sequence of bits. In the discussion of Figure 3, the byte is taken as an example, but any unit that can properly partition the file 50 (such as a bit or a character group, etc.) can be used to define the chapter information.

Please refer to FIG. 4, which is a schematic diagram of positioning each chapter frame according to an embodiment of the present invention. In this embodiment, when the media device is recording the multimedia file 50, it is at time points t(1), t(2), ..., t(i), t(i+1), ... , t(j) and t(j+1) recording frames F(1), F(2), ..., F(i), F(i+1), ...F(j) and F (j+1), and the present invention can provide corresponding chapter information according to the time point of the first frame of each chapter. For example, for the first frame F(i+1) of the first chapter, it can be based on the time point t(i+1) (for example, between time points t(i+1) and t(1) The gap) to set the chapter information of the first chapter. For the first frame F(j+1) of the second chapter, according to the time point t(j+1) (for example, the difference between the time point t(j+1) and t(1)) Set the chapter information for the second chapter, and so on.

In another embodiment, when the chapter information is to be set for a certain chapter, the time difference between the time point of the chapter marking frame and the time point of the previous chapter marking frame may be referred to. For example, when setting the chapter information of the second chapter, the difference between the time point t(j+1) and the time point t(i+1) can be used (t(j+1)-t(i+1) ) to define the chapter information of the second chapter. That is to say, if the mark frame of the kth chapter is the frame F(k1) (corresponding to the time point t(k1)), the mark frame of the (k+1)th chapter is the frame F(k2) ( Corresponding to the time point t(k2)), the chapter is set for the (k+1)th chapter according to the time point difference (t(k2)-t(k1)) between the frame F(k2) and F(k1). News.

Some media devices can record frames with a fixed frame rate, so if the time point corresponding to a frame is known, the frame can be located in the multimedia file.

Referring to FIG. 5, illustrated is a media device 60 in accordance with an embodiment of the present invention; the techniques of the present invention may be implemented in media device 60 to enable instant chapter segmentation of a video. The media device 60 includes a command interface 64, a chapter setting module 66, a source interface 68 and a recording module 62. The source interface 68 is coupled between a source 78 and the recording module 62, and receives the multimedia content provided by the source 78 and transmits the multimedia content to the recording module 62. The command interface 64 is coupled to the recording module 62 and the chapter setting module 66 for receiving the command 76. The command 76 can be a start recording command, an end recording command, a chapter segmentation command, or the like. According to the control of the command 76, the recording module 62 records the multimedia content provided by the source 78 in the multimedia file 50. When the recording module 62 records the file 50, if the chapter setting module 66 receives the chapter segmentation command via the command interface 64, a marker frame can be selected for the new chapter in the file 50, and the marker frame is provided for the marker frame. A corresponding chapter information. The chapter setting module 66 can provide chapter information according to the embodiment of FIG. 3 and/or FIG. 4; the chapter setting module 66 can be implemented by software, firmware and/or hardware.

In an embodiment, the media device 60 is implemented in an add-on card, such as a TV card or a TV stick; the add-in card is attached to a host (not shown) via a connector, for example, a USB connection. , PCI slot, PCI-E (PCI-Express) slot or Serial ATA (serial ATA) connector, etc. The command interface 64 can receive a command 76 issued by the host via the connector; for example, the host can display a human interface to the user via the keyboard, the mouse, the touchpad, the touch screen, or utilize gestures, actions, sounds, etc. Interacting with the human interface, the host interprets the user's interaction as a corresponding command and transmits the command to the media device 60. In one embodiment, the host can configure a dedicated button (fast key), a button combination, a dedicated clickable icon button, and/or a touch area for the chapter segmentation command, so that the user can record the file 50. Quickly trigger the chapter segmentation command. The file 50 recorded by the media device 60 can be transferred to a storage device (not shown) in the host for storage. In an embodiment, the chapter segmentation command may be automatically triggered by the host, for example, the host may periodically issue a chapter segmentation command; and/or, the host may identify and detect features in the recorded frame. In the test, once a specific feature is detected (for example, the statistical difference between the frames is greater than a preset value, and/or a specific image appears in the frame), the chapter segmentation command is automatically issued.

The media device 60 can also be a consumer electronic device, such as a CD-ROM, a hard disk, a video card recorder, a digital camera, a digital video camera, a computer with an image capturing lens, a tablet computer, a notebook computer, a mobile phone, and a personal computer. Digital assistants, video conferencing systems, security monitoring systems and/or driving recorders, etc., and/or screens, displays, television systems, television boxes and desktops that can record content.

In one embodiment, the command interface 64 can include a remote control transmitter and a remote control receiver (not shown). A keyboard, a mouse, a touchpad, and/or a touch screen are disposed on the remote control transmitter to accept user manipulation; and the remote control receiver is disposed in the media device 60. The user's manipulation on the remote transmitter will be translated into a corresponding command, and the remote signal will be sent to the remote receiver, and the remote receiver will transmit the command to the media device 60. In one embodiment, a dedicated button can be configured for the chapter segmentation command on the remote control transmitter to allow the user to quickly trigger the chapter segmentation command while recording the file 50.

In one embodiment, the command interface 64 can include a display panel, a projection device, and/or a voice sounding device to display/prompt a human interface to the user by image or sound, and includes a keyboard, a mouse, a touchpad, and a touch. a screen, a camera that captures the user's image, a sensor that senses the user's position and/or motion, and/or a microphone that listens to the user's voice for voice control, etc., to detect the user and the human machine interface. Interact and interpret the corresponding commands. In one embodiment, the command interface 64 can configure a dedicated button (fast key), a button combination, a dedicated clickable icon button, a touch area, and/or a voice keyword for the chapter segmentation command, so that the user can record The file segmentation command is triggered quickly when the file is 50.

In one embodiment, the source interface 68 can include an antenna and a corresponding receiving circuit for receiving a wireless source, such as a digital television program transmitted by the wireless television station. And/or, the source interface 68 can include a cable connector of the cable television and a corresponding receiving circuit to receive the cable television program provided by the cable television station. And/or, the source interface 68 can include various video interfaces for receiving the video source, such as an AV terminal, an S terminal, a DVI (Digital Video Interface), and/or a high definition multimedia interface (HDMI, High Definition Multimedia Interface). ) Specifications of video input 埠 and so on.

The media device 60 may include a storage device (not shown), such as a hard disk, a CD burner, and/or a memory card for storing the file 50. And/or, the media device 60 can include an output connector to output the file 50. And/or, the media device 60 can include various video interface ports for outputting video, and output the file 50 to a playback device such as an audio, a television, a display, a display panel, a projection device, and the like. Media device 60 may also include a wired and/or network card that retrieves command 76 and/or source 78 from the network and/or transmits file 50 to the remote end of the network.

In one embodiment, the media device 60 is a playback device (such as a television box or a television) having a time shifting function, which can record the multimedia content provided by the source 78 as a buffer for time shifting, and the present invention can also be implemented herein. Kind of playback device.

Please refer to FIG. 6 , which illustrates a process 200 according to an embodiment of the present invention; the process 200 can be applied to a media device having a multimedia file recording function (such as the media device 60 in FIG. 5 ) to implement an instant chapter during recording. Segmentation function. The steps of process 200 can be illustrated as follows.

Step 202: Start recording, and the media device starts to record the frame in a file.

Step 204: Detect whether one of the end video command or the chapter segmentation command is received. If the chapter segmentation command is received, proceed to step 206; if the end video command is received, proceed to step 210. If the end video command and the chapter segment command are not received, the detection is continued in step 204.

Step 206: If the chapter segmentation command is received, proceed to step 207.

Step 207: Require the media device to record the frame currently being recorded as an in-frame coded frame.

Step 208: Select the in-frame code frame generated in step 207 as a mark frame, and set a corresponding chapter information for the mark frame, and then record the chapter information in the file. This tag frame becomes the first frame of a new chapter. While the file continues to be recorded, the chapter information is written to the file header.

Step 210: If the end recording command is received, proceed to step 212.

Step 212: End the recording.

Some media devices pay more attention to the file size of multimedia files, and often use the inter-frame code frame for video recording. For such a media device, the process 200 can be utilized to implement the video instant chapter segmentation technique of the present invention. When the chapter segmentation is to be performed in the video, the media device may record the closest frame to be recorded at the time point as an in-frame code frame after receiving the chapter segmentation command (step 207), so that the frame is in the frame. The coded frame can be used as the first frame of a chapter. Various embodiments for providing chapter information can be referred to the discussion of Figures 3 and 4.

Please refer to FIG. 7, which illustrates a process 300 according to an embodiment of the present invention; the process 300 can be applied to a media device (such as the media device 60) having a multimedia file recording function to implement instant chapter segmentation during recording. Features. The steps of the process 300 can be illustrated as follows.

Step 302: Start recording; the media device begins to record the frame in a multimedia file.

Step 304: Detect whether one of the end video command or the chapter segment command is received. If the chapter segmentation command is received, proceed to step 306; if the end video command is received, proceed to step 310. If the end video command and the chapter segment command are not received, the detection is continued in step 304.

Step 306: If the chapter segmentation command is received, proceed to step 308.

Step 308: In the multimedia file being recorded, select an in-frame code frame that is closest in time to the chapter segmentation command as a mark frame, and set a corresponding chapter information for the coded frame in the frame. The recording of the multimedia file continues, but the information in this chapter is not currently written to the multimedia file. In one embodiment, the media device or host that records the multimedia file is provided with a temporary memory (such as a volatile random access memory), and the chapter information can be temporarily stored in the memory.

Step 310: If the end video command is received, proceed to step 312.

Step 312: End the recording and proceed to step 314.

Step 314: Save the chapter information temporarily stored in step 308 to the multimedia file. In one embodiment, the multimedia file has a header, and the header can have a directory section for recording chapter information; and step 314 is to write chapter information to the directory section in the header.

Please refer to FIG. 8 , which illustrates a process 400 according to an embodiment of the present invention; it can realize instant chapter segmentation on a media device (such as the media device 60 in FIG. 5 ) of a multimedia file recording function. Features. The steps of the process 400 can be illustrated as follows.

Step 402: Start recording, and the media device starts to record the frame in a multimedia file.

Step 404: Detect whether one of the end video command or the chapter segmentation command is received. If the chapter segmentation command is received, proceed to step 406; if the end video command is received, proceed to step 410. If the end video command and the chapter segment command are not received, the detection is continued in step 404.

Step 406: If the chapter segmentation command is received, proceed to step 407.

Step 407: Require the media device to record the frame currently being recorded as an in-frame coded frame.

Step 408: Select the in-frame code frame generated in step 407 as a mark frame, and set a corresponding chapter information for the mark frame. While the multimedia file continues to be recorded, the chapter information is temporarily stored in the memory of the media device (or host) and is not written to the header of the multimedia file.

Step 410: If the end recording command is received, proceed to step 412.

Step 412: End the recording and proceed to step 414.

Step 414: Save the chapter information temporarily stored in step 408 to the multimedia file.

When the processes 100, 200, 300, and/or 400 are implemented by the device 60, the chapter information is provided by the chapter setting module 66. When step 108 or 208 is performed, each chapter setting module 66 provides a chapter information for a new chapter, and the chapter information is recorded by the recording module 62 into the file 50. When step 308 or 408 is performed, the chapter information provided by the chapter setting module 66 is temporarily stored in the memory. After the recording module 62 finishes recording the file 50, the temporarily stored chapter information is uniformly written to the file 50. The device 60 can have one or several of the processes 100, 200, 300, and 400 built in; in one embodiment, the user selects which process to use to implement the video instant chapter segmentation. And/or, device 60 (or the host to which device 60 is attached) can automatically determine which process to use based on factors such as the format of the file to be recorded.

Referring to FIGS. 9-11, it is illustrated that a multimedia file is played on a screen 80 of a playback device (not shown) in accordance with various embodiments of the present invention. In the embodiment of FIG. 9, the file names of different multimedia files are displayed in only one playback file menu (in the figure 9, file A, file B, file C, etc.), and the user selects a multimedia file. After the file name, the playback device starts to play back the multimedia file; during the playback, if the user triggers the jump command, the playback device will jump (fast forward or reverse) according to the chapter information in the multimedia file after receiving the jump command. To each chapter (such as the first frame of each chapter).

In the embodiment of FIG. 10, the playback device displays the file name and the chapter name in the playback file menu on the screen 80, and the user can select a certain file or a certain chapter of a certain file to start playback. For example, when the user selects a certain chapter of a certain multimedia file via the playback device, the playback device receives a jump command and jumps to the selected chapter of the multimedia file. After jumping to the selected chapter, the user can also issue a subsequent jump command to quickly forward or reverse to other chapters according to the chapter segmentation. In an embodiment, the preset chapter name may be displayed according to the chapter information; for example, the first chapter is displayed as "Chapter 1" and the second chapter is displayed as "Chapter 2". In one embodiment, the user can also edit the chapter names of the chapters by themselves. In an embodiment, when the user performs chapter segmentation during recording, the chapter segmentation may be performed according to different chapter hierarchical structures, for example, having multiple chapters in the file and segmenting each chapter. Multiple paragraphs and so on.

In the embodiment of Fig. 11, the picture/icon of each chapter is displayed in the playback file menu, for example, a thumbnail of each chapter mark frame (i.e., the first frame of each chapter). The user can select a screen/icon/thumbnail to trigger a jump command to play back a chapter, or to fast forward or reverse according to the chapter segmentation. The screen 80 (and the playback device) of Figures 9 through 11 may be integrated with the media device 60 of Figure 5; or the screen 80 and associated playback device discussed with respect to Figures 9 through 11 are independent of the media. Device 60.

Users can also edit multimedia files according to chapters. For example, a user can delete a chapter from the file. When deleting, the first frame of the chapter to the last frame of the chapter is removed from the archive, and the chapter information corresponding to the chapter is deleted in the directory section of the file header. Similarly, you can copy all the frames of a chapter and insert them into the same or another file, and so on.

In summary, compared with the prior art, the present invention can perform chapter segmentation at the same time of video recording, and does not need to perform chapter segmentation in the post-production process, thereby saving time and cost of post-production, and arranging files, Play and management is more convenient and also meets the user's intuitive operation.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

50. . . file

52. . . Head

60. . . Media device

62. . . Recording module

64. . . Command interface

66. . . Chapter setting module

68. . . Source interface

76. . . command

78. . . Source

80‧‧‧ screen

100, 200, 300, 400‧‧‧ processes

Steps 102-112, 202-212, 302-314, 402-414‧‧

F(.)‧‧‧ frame

cmdC(.)‧‧‧ chapter segmentation order

T1, t2, t (.) ‧ ‧ time points

B (.) ‧ ‧ Bytes

Figure 1 is a flow diagram in accordance with an embodiment of the present invention.

Figure 2 illustrates the operation of the flow of Figure 1.

3 and 4 illustrate schematic diagrams of positioning a frame in a multimedia file in accordance with various embodiments of the present invention.

Figure 5 illustrates a media device in accordance with an embodiment of the present invention.

Figures 6 through 8 are diagrams of processes in accordance with various embodiments of the present invention.

9 to 11 are schematic views showing the playing of a multimedia file in accordance with various embodiments of the present invention.

100. . . Process

102-112. . . step

Claims (15)

A method for applying to a media device, the media device recording a file, the file comprising a plurality of frames, and the method comprising: when the media device records the file, after receiving a chapter segmentation command, In the file, an intra-frame coding frame is selected as a mark frame; and a corresponding chapter information is recorded for the mark frame. The method of claim 1, further comprising: after receiving the chapter segmentation command, causing the media device to record a frame coded frame in the file; and when the marker frame is selected, Select the frame coded in this box. The method of claim 1, wherein the media device records each frame in the file in units of a byte in a sequence starting from a starting byte, and the method further comprises: The byte of the tag frame provides the chapter information relative to the order of the starting byte. The method of claim 1, wherein the media device records each frame in the file in units of bytes starting from a first byte after a header. And the method further comprises: providing the chapter information according to the order of the byte of the marked frame relative to the first byte. The method of claim 1, wherein the media device sequentially records each frame in the file in units of bytes, and the method further comprises: when the media device records the file, After receiving a second chapter segmentation command, selecting a second marker frame in the file; according to the order of the byte of the second marker frame relative to the byte of the marker frame The second marker frame provides a corresponding second chapter information; and records the second chapter information. The method of claim 1, further comprising: providing the chapter information according to the time point of the marked frame. The method of claim 1, further comprising: when the media device records the file, after receiving a second chapter segmentation command, selecting a second marker frame in the file; The difference between the second marker frame time point and the marker frame time point provides a corresponding second chapter information for the second marker frame; and the second chapter information is recorded. The method of claim 1, further comprising: when the file is played, after the jump command is received, the mark frame starts to continue playing. A media device includes: a recording module, recording a file, the file includes a plurality of frames; and a chapter setting module; when the recording module records the file, the chapter setting module receives a After the chapter segmentation command, an intra-frame coding frame is selected as a marker frame in the file, and a corresponding chapter information is provided for the marker frame. The media device of claim 9, wherein after receiving the chapter segmentation command, the recording module records a frame coded frame in the file, and the chapter setting module is The frame coded in the frame is selected as the marker frame. The media device of claim 9, wherein the recording module records each frame in the file in units of a byte group starting from a starting byte, and the chapter sets a mode. The group provides the chapter information according to the order of the bytes of the marked frame relative to the starting byte. The media device of claim 9, wherein the recording module is recorded by a first byte after a header, and sequentially records each of the files in a byte unit. a frame, and the chapter setting module provides the chapter information according to the order of the byte of the marked frame relative to the first byte. The media device of claim 9, wherein the recording module sequentially records each frame in the file in units of bytes; when the recording module records the file, the chapter is set After receiving a second chapter segmentation command, the module selects a second marker frame in the file, and according to the order of the byte of the second marker frame relative to the byte of the marker frame A corresponding second chapter information is provided for the second marker frame. The media device of claim 9, wherein the chapter setting module provides the chapter information according to a time point of the marking frame. The media device of claim 9, wherein when the recording module records the file, after receiving a second chapter segmentation command, the chapter setting module selects a second marker image in the file. The frame provides a corresponding second chapter information for the second marker frame according to the difference between the second marker frame time point and the marker frame time point.