JP2008277905A - Code recording device and code recording method, and code sending-out device and code sending-out method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compatibly perform continuous reproduction of codes over a plurality of recording medium and independent reproduction of codes by the recording media when codes representing a continuous signal are divided and recorded on the plurality of recording media. <P>SOLUTION: When a long-time moving image is captured, a control unit 10 switches a recording destination of a data file F containing audio data DA and video data DV between a removal medium RM and an internal memory 23 alternately, resets SCR, AudioPTS, and VideoPTS for each data file F, and further generates and records a connection information file C containing adjusted time stamp information etc., at the time of switching of the recording destination. When the moving image is reproduced and transferred, the moving image is reproduced while the time stamp is adjusted based upon the adjusted time stamp information of the connection information file C, so that an MPEG1 stream which the time stamp suitably counts up is generated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a code recording apparatus, a code recording method, a code transmission apparatus, and a code transmission method, and is suitable for application to a digital camera, for example.

  Conventionally, in digital cameras, a still image captured through a lens is encoded and recorded in a recording medium such as a memory card as still image data in JPEG (Joint Photographic Coding Experts Group) format or the like is widely used. ing.

  In recent years, there has also been proposed a digital camera that captures moving images in addition to still images and records them on a recording medium as moving image data in the MPEG1 (Motion Pictures Expert Group 1) format or the like.

  However, a recording medium such as a memory card is supposed to record still image data having a relatively small size for each sheet. For this reason, a recording medium such as a memory card has a problem in that only moving image data of a relatively short time can be recorded when moving image data whose size is much larger than still image data is recorded. .

Therefore, in some digital cameras, a user can exchange a plurality of recording media while temporarily using a built-in memory so that a moving image can be recorded over a long period of time across the plurality of recording media. Have also been proposed (see, for example, Patent Document 1).
JP-A-2005-310214 (page 7, FIGS. 3 and 4)

  By the way, moving image data in the MPEG1 format or the like is composed of still image data for every predetermined time (for example, 1/30 second), and each still image data has a time for reproduction along the original traveling time. A stamp is attached. In general, the time stamp starts from a value “0” and sequentially counts up.

  On the other hand, some playback devices that play back moving image data cannot play back correctly unless the time stamp starts from the value “0”, or cannot be played back when the time stamp becomes discontinuous. There is.

  For this reason, when continuous time stamps are given across a plurality of recording media by a digital camera, moving image data can be continuously reproduced while replacing the plurality of recording media in the reproduction device, but the second and subsequent recordings are possible. When the moving image data recorded on the medium is reproduced alone, there is a problem that the moving image data may not be correctly reproduced because it starts from a time stamp other than “0”.

  On the other hand, when resetting the time stamp to the value “0” for each storage medium, the moving image data for each recording medium can be reproduced independently by the reproducing apparatus, but when the moving image data is edited and combined as it is, There is a problem in that the time stamp is discontinuous at the editing location, so that playback on the playback device may be impossible.

  The present invention has been made in consideration of the above points. When a code representing a continuous signal is divided and recorded on a plurality of recording media, continuous reproduction of the codes over the plurality of recording media and codes for each recording medium are performed. A code recording device, a code recording method, a code sending device, and a code sending method that are compatible with single reproduction of the code are proposed.

  In order to solve such problems, in the code recording apparatus and the code recording method of the present invention, continuous signals should be sequentially encoded, and the generated codes should be divided into recording units corresponding to a predetermined time to be reproduced as recording units. A time stamp indicating timing is given and stored in each predetermined packet, and when each packet is distributed and recorded on a plurality of recording media, the time stamp of the packet distributed to the second and subsequent recording media is recorded for each recording medium. By starting recording from a predetermined initial value and recording the original timing of the first packet in the second and subsequent recording media as connection information corresponding to each recording medium in a predetermined recording unit. When the code is read and sent to a predetermined destination, the code of each packet recorded on the first recording medium is in accordance with the time stamp. After sending out by imming, the time stamp of each packet recorded on the second and subsequent recording media is changed according to the timing to be originally reproduced of the connection information corresponding to each recording medium, and then each packet is sent out. did.

  Thus, the time stamp of each recording medium can be started from the initial value to maintain the reproduction compatibility, and the connection information is recorded to connect each recording medium when sending the packet of each recording medium. It is possible to change the time stamp of each packet based on the timing of the first packet to be reproduced.

  In the code transmission device and the code transmission method of the present invention, a code generated based on continuous signals is packetized every minute corresponding to a predetermined time, and each packet is given a time stamp indicating the timing to be reproduced. From the recording medium recorded by changing the time stamp of the packet distributed to the second and subsequent recording media so as to start from a predetermined initial value for each recording medium, Reads packets sequentially, obtains connection information storing the timing to be originally reproduced of the packets recorded on the second and subsequent recording media from a predetermined recording unit, and assigns them to the packets read from the second and subsequent recording media Each time stamp is changed based on the timing at which the connection information corresponding to each recording medium should be reproduced. Packets read from the body, and a packet time stamp has been replaced struck read from the second and subsequent recording medium so as to sequentially sent to a predetermined transmission destination.

  Thus, when connecting and sending packets of each recording medium whose time stamps all start from the initial value, the time stamp of each packet is converted into the original time stamp as a series of packets by referring to the connection information. Can be sent to

  According to the present invention, the time stamp of each recording medium can be started from the initial value to maintain reproduction compatibility, and by recording connection information, when connecting and sending packets of each recording medium, The time stamp of each packet can be changed based on the timing of the original packet to be reproduced on each recording medium, and thus a plurality of codes when a code representing a continuous signal is divided and recorded on a plurality of recording media Therefore, it is possible to realize a code recording apparatus and a code recording method capable of achieving both continuous reproduction of codes over the recording medium and independent reproduction of codes for each recording medium.

  Further, according to the present invention, when connecting and transmitting packets of each recording medium whose time stamps all start from the initial value, the time stamp of each packet is converted into a series of packets by referring to the connection information. The code can be transmitted after being replaced with the original time stamp. Thus, when a code representing a continuous signal is divided into a plurality of recording media and recorded, the code is reproduced continuously over a plurality of recording media and the code for each recording medium. The code sending device and the code sending method can be realized that can achieve both the single reproduction and the code sending.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Configuration of Digital Camera (1-1) Appearance Configuration As shown in FIGS. 1A to 1C, the digital camera 1 encodes and encodes a still image or a moving image captured through the camera lens 2. The subsequent still image data or moving image data can be recorded on a removable medium RM as a recording medium such as a memory stick (registered trademark of Sony Corporation).

  The digital camera 1 is configured in a substantially rectangular parallelepiped shape as a whole, and is assumed to be used by being held by a user, like a general camera. As shown in FIG. 1A, the digital camera 1 is provided with a camera lens 2 for condensing light from a subject on the front, and a shutter button 3A for receiving an imaging instruction from a user on the upper surface. ing.

  In addition, as shown in FIG. 1B, the digital camera 1 includes operations such as a cursor key for receiving various operations in addition to a display unit 4 for displaying an image captured through the camera lens 2. A button group 3B is provided on the back surface.

  Further, as shown in FIG. 1 (A), the digital camera 1 is provided with a microphone 5 that collects ambient sounds and a speaker 8 that emits reproduced sounds, and a removable medium RM is inserted. An external interface (I / F) terminal 8 for connecting to a computer or the like via a media slot 7 and a USB (Universal Serial Bus) cable or the like for data transfer or the like is provided on the side surface.

(1-2) Circuit Configuration As shown in FIG. 2, the digital camera 1 is configured to perform overall control by the control unit 10. The control unit 10 includes a CPU (Central Processing Unit) that performs various arithmetic processes, a ROM (Read Only Memory) that stores various programs such as a moving image recording program, and a RAM (Random Access Memory) that is used as a work area of the CPU. , None of which are shown in the figure), and various processes such as a moving picture recording process are executed by developing and executing a moving picture recording program read from the ROM by the CPU in the RAM. ing.

  Each processing block such as the control unit 10 and the camera block 13 operates by receiving power supply from the power supply block 11.

  Incidentally, the control unit 10 has a plurality of operation modes such as a still image capturing mode for capturing a still image, a moving image capturing mode for capturing a moving image, and a moving image reproduction mode for reproducing captured image data. The operation mode can be switched by a mode switching operation by the user via the operation unit 3.

  In practice, the control unit 10 presses the shutter button 3A (FIG. 1A) in a state where the mode is switched to the moving image capturing mode by the mode switching operation via the operation unit 3, thereby moving the moving image. Imaging is started.

  At this time, the control unit 10 controls the camera controller 14 of the camera block 13 via the bus 12 so that light from a subject (not shown) is condensed by the camera lens 2 that has been subjected to predetermined focus adjustment or the like. Then, this is imaged on an image pickup device 15 composed of a CCD (Charge Coupled Device) image sensor, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, or the like.

  The image sensor 15 generates a video signal SV 1 corresponding to the imaged light and supplies it to the analog signal processing circuit 16. The analog signal processing circuit 16 generates a video signal SV2 by performing predetermined signal processing on the video signal SV1, and converts the video signal SV2 into a digital video signal SDV by an A / D (Analog / Digital) conversion circuit 17. The data is temporarily stored by supplying it to the buffer memory 18 via the bus 12.

  The control unit 10 sequentially reads out the digital video signal SDV from the buffer memory 18 and supplies the digital video signal SDV to the image compression / expansion circuit 19 so that the digital video signal SDV is sequentially converted into MPEG1 (Motion Pictures Expert Group 1) video data DV. The data is compressed and encoded and sequentially stored in the buffer memory 18 again.

  On the other hand, the control unit 10 collects the sound by the microphone 5 and sequentially generates the sound signal SA based on the collected sound, and converts the sound signal SA into the digital sound signal SDA by the A / D conversion circuit 20. The data is supplied to the compression / decompression circuit 21.

  The control unit 10 sequentially converts the digital audio signal SDA into MP3 (Motion Pictures Expert Group-1 Layer-3) type audio data DA by the audio compression / decompression circuit 21 and sequentially stores it in the buffer memory 18.

  The control unit 10 reads out a predetermined amount of video data DV from the buffer memory 18 and adds header data THV storing a time stamp (hereinafter also referred to as PTS (Presentation Time Stamp)) to be referred to during reproduction. The video packets TV are sequentially generated, a predetermined amount of audio data DA is read from the buffer memory 18, and the header data THA in which the time stamp (PTS) is stored is added to generate the audio packets TA sequentially. Are sequentially recorded on the removable media RM through the media interface 22 as MPEG1 streams. Incidentally, the bit rate of this MPEG1 stream is about 1M [Byte / Sec].

  At this time, as shown in FIG. 3, the control unit 10 configures a pack P having a pack header PH of a predetermined format such as a time stamp (hereinafter also referred to as SCR (System Clock Reference)) to be referred to at the time of reproduction. A predetermined number or less of audio packets TA (hereinafter referred to as audio packet group PA) and a predetermined number or less of video packets TV (hereinafter referred to as video packet group PV) are sequentially stored in the pack P. .

  Incidentally, the control unit 10 is configured so that one data file F is constituted by one or a plurality of packs P, and the data file F can be recorded in the removable medium RM and reproduced.

  Further, the control unit 10 can record the pack P in the nonvolatile built-in memory 23 (FIG. 2) instead of the removable medium RM. That is, as shown in FIG. 4, the control unit 10 controls the media interface 22 to switch the recording destination of the video data DV and audio data DA stored in the buffer memory 18 to the built-in memory 23.

  At this time, the control unit 10 configures the data file F having one or more packs P in the internal memory 23 so that the video data DV and the audio data DA are stored in the packs P as in the case of the removable media RM. The stored data file F can be recorded.

  Incidentally, the built-in memory 23 has a capacity of 1 G [Byte] or more, and can record moving image data of about 16 minutes or more.

  On the other hand, when the control unit 10 is switched to the moving image playback mode by the mode switching operation via the operation unit 3, the control unit 10 displays a predetermined GUI (Graphical User Interface) menu on the display unit 4 (FIG. 1B), The user is allowed to select moving image data to be reproduced via the operation button group 3B (FIG. 1B).

  At this time, the control unit 10 reads the pack P from the removable medium RM corresponding to the selected moving image data, and temporarily stores it in the buffer memory 18 via the media interface 22 and the bus 12, while the video data DV is received from the pack P. And audio data DA are sequentially taken out and sequentially sent to the image compression / decompression circuit 19 and the audio compression / decompression circuit 21, respectively.

  The image compression / decompression circuit 19 generates a decoded video signal DV2 by sequentially decoding the video data DV and supplies it to a D / A (Digital / Analog) conversion circuit 24 to convert it into an analog decoded video signal SV2. This is supplied to the display controller 25.

  The display controller 25 generates a display video signal SV3 based on the decoded video signal SV2, and supplies the display video signal SV3 to the display unit 4, thereby sequentially displaying each image constituting the moving image data.

  In parallel with this, the audio compression / decompression circuit 21 generates the decoded audio signal DA2 by sequentially decoding the audio data DA and supplies it to the D / A conversion circuit 26. The D / A conversion circuit 26 converts the decoded audio signal DA2 into an analog audio signal SA2, and supplies the analog audio signal SA2 to the speaker 6, thereby sequentially outputting the audio of the moving image.

  Thus, the control unit 10 can reproduce the moving image data stored in the removable media RM as the data file F and selected by the user, that is, the MPEG1 stream.

  Incidentally, when reproducing the moving image data, the control unit 10 operates a counter internally to count up the counter every predetermined unit time and store it in the pack header P of the pack P (FIG. 3) in the data file F. The SCR, the VideoPTS stored in the header data THV of the video packet TV, and the VideoPTS stored in the header data THA of the audio packet TA (hereinafter collectively referred to as PTS) are collated.

  The control unit 10 reads each pack P from the removable medium RM at the timing when the SCR stored in the pack header P matches the counter value, and the PTS stored in the header data THV and THA respectively matches the counter value. By sending each video packet TV and each audio packet TA to the image compression / decompression circuit 19 and the audio compression / decompression circuit 21 at the same timing, the time changes in the same manner as during recording while synchronizing the video and audio. The moving image can be played back.

  Further, when an external computer (not shown) or the like is connected to the external interface terminal 8 via a USB cable (not shown), the control unit 10 performs predetermined data conversion processing or the like by the external interface 27. Thus, the data file F read from the removable medium RM can be transferred to the computer in the MPEG1 stream format.

  Incidentally, when the control unit 10 is switched to the still image capturing mode by the mode switching operation via the operation unit 3, the control unit 10 captures a still image at the timing when the shutter button 3A is pressed. In this case, the control unit 10 generates a video signal SV1 for one frame by the camera block 13, and encodes it into still image data DS of JPEG (Joint Photographic Coding Experts Group) system by the image compression / expansion circuit 19, This is recorded on the removable medium RM as one file.

  When the control unit 10 is switched to the still image reproduction mode by the mode switching operation via the operation unit 3, the control unit 10 reads out a predetermined number (for example, nine) of the still image data DS from the removable media RM and creates the thumbnail image THM. At the same time, the images are displayed side by side on the display unit 4, and the user selects a still image to be reproduced (that is, displayed on the entire display unit 4) via the operation button group 3B (FIG. 1B). When any one of the thumbnail images THM is selected by the user, the control unit 10 enlarges or reduces the still image data DS corresponding to the thumbnail image THM according to the number of pixels of the display unit 4 and the like. This is displayed on the part 4.

  As described above, the digital camera 1 captures a moving image, generates video data DV and audio data DA under the control of the control unit 10, stores the video data DV and audio data DA in the pack P in the MPEG1 format, and stores them in the removable media RM or the built-in memory. 23 (hereinafter collectively referred to as a medium) can be recorded and reproduced as a data file F.

(2) Recording of moving image (2-1) Switching of recording destination In digital camera 1, imaging data (that is, video data DV and audio data DA) increases according to the imaging time of moving images. The recording capacity of the removable media RM is finite. That is, in the digital camera 1, the recording time of a moving image that can be recorded on the removable medium RM is limited by the recording capacity.

  Therefore, when the control unit 10 of the digital camera 1 wants to continue recording a moving image exceeding the recording time limit, the control unit 10 appropriately switches the recording destination between the removable medium RM and the built-in memory 23 to set the media upper limit time. It is designed to continue recording moving images for a long time.

  That is, as shown in FIG. 5, the control unit 10 first configures the data file F1 on the first removable medium RM1, and stores the video data DV and audio data DA as moving image data in the pack P11 of the data file F1. To go.

  At this time, for example, as shown in FIG. 6A, the control unit 10 sets the SCR of the pack header PH in the first pack P11 to the value “00000000” in the data file F1 of the removable medium RM1, and sets the first audio packet TA. The header data THA and the PTS in the header data THV of the video packet TV are both set to the value “00003000”, and the SCR value and the PTS value are increased by a predetermined number.

  The control unit 10 monitors the free capacity of the removable medium RM that is the current recording destination during recording of the moving image data. When the free space becomes equal to or less than a predetermined threshold, the control unit 10 displays a media replacement notice message MSG1 on the display unit 4 as shown in FIG. To encourage you to prepare.

  For example, this threshold value is set to a recording capacity corresponding to about 60 seconds when converted into the recording time of moving image data. Further, the control unit 10 needs to replace the removable medium RM by converting the free space of the removable medium RM into the recordable time of the moving image data and displaying the recordable time together on the display unit 4. So that the user can recognize the time until. Further, the control unit 10 performs so-called countdown by updating the recordable time as needed.

  The control unit 10 continues recording the moving image data on the removable medium RM as it is. In the example of FIG. 6A, the SCR in the second (that is, the last) pack P12 is set to the value “00027000”, and the last audio is recorded. Both the packet TA and the PTS in the last video packet TV have the value “0060000”.

  After that, the control unit 10 switches the recording destination of the moving image data to the built-in memory 23 when the free space of the removable medium RM runs out. Specifically, the control unit 10 configures a data file F2 in the built-in memory 23, and stores video data DV and audio data DA as moving image data in the pack P21 of the data file F2.

  At this time, the control unit 10 resets the SCR in the pack P21 to the value “00000000” as in the case of the pack P11, and resets both the PTSs in the audio packet TA and the video packet TV to be the same as in the case of the pack P11. Starting from the value “00003000”.

  Further, the control unit 10 creates a connection information file C as shown in FIG. 6B as information for connecting the data files F1 and F2. The connection information file C includes the previous file information ci1 and the subsequent file information ci2 indicating the media type (that is, either the removable medium RM or the built-in memory 23) and the file name in the data file F before and after connection, and time stamp replacement. A time stamp replacement flag ci3 indicating necessity (to be described in detail later), connection SCR information ci4, connection AudioPTS information ci5 and connection VideoPTS information ci6 respectively indicating SCR, AudioPTS and VideoPTS after time stamp replacement are stored. It is made like that.

  When the SCR, AudioPTS, and VideoPTS of the pack P21 are all reset, the control unit 10 resets the SCR, AudioPTS, and VideoPTS in the data file F2 by setting the value “1” in the time stamp replacement flag ci3. Record that.

  Further, if the SCR, AudioPTS, and VideoPTS of the pack P21 are not reset, the control unit 10 sets values to be set in the SCR, AudioPTS, and VideoPTS of the pack P21 following the pack P12, connection SCR information ci4, connection AudioPTS information ci5 and connection VideoPTS information ci6 (hereinafter collectively referred to as replacement time stamp information) are stored. In the example of FIG. 6B, the value “00057000” to be set next to the SCR value “00027000” in the last pack P12 of the data file F1, the last audio packet TA and the last video in the data file F1, respectively. A value “00063000” to be set next to the PTS value “0060000” in the packet TV is set.

  Incidentally, in the connection information file C1, the thumbnail image THM of the first frame of the video data DV in the rear data file F (that is, the data file F2), the user memo YM that can be arbitrarily set by the user, the imaging date and time, the shutter speed, etc. Exif (Exchangeable Image File Format) information defined for imaging information can also be stored.

  This connection information file C1 is recorded in the internal memory 23 and managed in association with the data file F (“FILE001” in the case of FIG. 6B, that is, the data file F1) stored as the previous file information ci1. It is made so that.

  Further, when the recording destination of the moving image data is switched to the built-in memory 23, the control unit 10 displays a media exchange message MSG2 on the display unit 4 as shown in FIG. It is urged to exchange. At this time, the control unit 10 displays the recordable time according to the free space of the built-in memory 23 to prompt early replacement of the removable medium RM.

  The control unit 10 monitors whether or not the removable media RM has been replaced via the media interface 22 (FIG. 2) and the free space after the replacement. When the control unit 10 detects that the removable medium RM has been replaced with a removable medium RM having a sufficient free space, the control unit 10 switches the recording destination of the moving image data from the built-in memory 23 to the removable medium RM again. A data file F3 is configured on the medium RM2 (FIG. 5), and all of the SCR, AudioPTS, and VideoPTS are reset, and video data DV and audio data DA are stored as moving image data in the data file F3.

  At this time, the control unit 10 creates a connection information file C2 (not shown) of the same format as the connection information file C1 as information for connecting the data files F2 and F3 and records it in the built-in memory 23.

  Thereafter, the control unit 10 repeats the same processing to create a data file F4 in the internal memory 23, a data file F5 in the third removable medium RM3, and video data DV and audio data as moving image data. DA is stored, and connection information files C3 and C4 (not shown) are created as information for connecting the data files F3 and F4 and information for connecting the data files F4 and F5. Record in the memory 23.

  Incidentally, when receiving a predetermined stop operation through the operation unit 3, the control unit 10 ends the moving image data recording process.

  In addition, when a still image or other data is recorded on the removable medium RM or the built-in memory 23 as a recording destination, the control unit 10 considers these as unnecessary files from the viewpoint of recording moving image data as long as possible. It is supposed to be considered.

  In this case, as shown in FIG. 7C, the control unit 10 displays a message MSG3 for confirming whether or not unnecessary files can be deleted on the display unit 4, and when receiving the deletion instruction, the control unit 10 stores the unnecessary files. It is designed to delete and increase free space.

  As described above, when capturing a moving image for a long time, the control unit 10 divides the data into a plurality of data files F while alternately switching the removable medium RM and the built-in memory 23 as a recording destination of the moving image data, and SCR, AudioPTS. The video data DV and the audio data DA are stored each time the VideoPTS is reset, and the connection information file C is generated and recorded in the built-in memory 23 when the recording destination is switched.

(2-2) Moving Image Recording Processing Next, a detailed processing procedure in moving image recording by the digital camera 1 will be described with reference to the flowchart of FIG. That is, when the control unit 10 of the digital camera 1 receives an instruction to start capturing a moving image via the operation unit 3 (FIG. 2), the control unit 10 starts the moving image recording processing procedure RT1 and proceeds to step SP1.

  In step SP1, the control unit 10 determines whether or not the free space of the removable media RM is equal to or less than a threshold value. If a negative result is obtained here, this means that the audio packet TA and the video packet TV can be continuously recorded as moving image data on the removable medium RM for a while. At this time, the control unit 10 Control goes to step SP14.

  On the other hand, if a positive result is obtained in step SP1, this means that moving image data cannot be recorded on the removable medium RM soon. At this time, the control unit 10 proceeds to the next step SP2.

  In step SP2, the control unit 10 displays the media replacement notice message MSG1 (FIG. 7A) on the display unit 4, and prepares for switching the recording destination of the moving image data from the removable medium RM to the built-in memory 23. The close process of the data file F storing the video data DV and the audio data DA is started, and a loop counter used in the subsequent process is initialized, and the process proceeds to the next step SP3.

  In step SP3, the control unit 10 determines whether or not the capacity of the built-in memory 23 is equal to or greater than a predetermined value. If an affirmative result is obtained here, this indicates that a certain amount of moving image data can be recorded in the built-in memory 23. At this time, the control unit 10 proceeds to the next step SP4.

  In step SP4, the control unit 10 determines whether or not the loop counter remains at the initial value, that is, whether or not the loop processing is the first time. If an affirmative result is obtained here, this indicates that the data file F has not been created since the recording destination of the moving image data has just been switched to the built-in memory 23. At this time, the control unit 10 Move to next Step SP5.

  In step SP5, the control unit 10 creates the connection information file C in the built-in memory 23 and stores each information such as the previous file information ci1 and the connection SCR information ci4, and proceeds to the next step SP6. Incidentally, the connection information file C at this time stores information for connecting the data file F of the built-in memory 23 to the data file F of the removable medium RM.

  In step SP6, the controller 10 records the SCR value stored in the pack header PH when the pack P is next recorded, and the PTS stored in the packet header THA of the audio packet TA and the packet header THV of the video packet TV. All the values are reset, and the process proceeds to the next step SP7.

  In step SP7, the control unit 10 creates the data file F in the built-in memory 23, starts storing the video data DV and audio data DA in the pack P of the data file F, and proceeds to the next step SP8. .

  In step SP8, the control unit 10 displays the media exchange message MSG2 on the display unit 4 via the display controller 25, and proceeds to the next step SP9.

  On the other hand, if a negative result is obtained in step SP4, this indicates that the series of loop processing is performed for the second time or later, and at this time, the control unit 10 omits the processing of steps SP5 to SP8 described above and continues. The process proceeds to step SP9.

  In step SP9, the control unit 10 calculates the free space of the built-in memory 23, converts the free space into a recordable time for moving image data, and displays (or updates) the recordable time on the display unit 4. The process proceeds to next step SP10.

  In step SP10, the control unit 10 increments the loop counter and determines whether the user has replaced the removable media RM via the media interface 22. If a negative result is obtained here, this means that it is necessary to continue recording moving image data in the built-in memory 23, and at this time, the control unit 10 returns to step SP4 again.

  On the other hand, if a positive result is obtained in step SP10, this indicates that the recording destination of the moving image data should be switched from the built-in memory 23 to the replaced removable medium RM. The process proceeds to step SP11.

  In step SP11, the control unit 10 creates the connection information file C in the built-in memory 23 and stores each information such as the previous file information ci1 and the connection SCR information ci4, and proceeds to the next step SP12. Incidentally, the connection information file C at this time is different from the connection information file C created in step SP5, and information for connecting the data file F of the removable medium RM is stored in the data file F of the built-in memory 23. .

  In step SP12, the control unit 10 records the value of the SCR stored in the pack header PH when the pack P is next recorded, and the PTS stored in the packet header THA of the audio packet TA and the packet header THV of the video packet TV. All the values are reset, and the process proceeds to the next step SP13.

  In step SP13, the control unit 10 creates the data file F on the removable medium RM, starts storing the video data DV and the audio data DA in the pack P of the data file F, and proceeds to the next step SP14. .

  In step SP14, the control unit 10 records the video data DV and the audio data DA on the removable medium RM, moves to the next step SP17, and ends the moving image recording processing procedure RT1.

  On the other hand, if a negative result is obtained in step SP3, this means that the moving image data cannot be recorded in the built-in memory 23 for a time sufficient for the user to replace the removable media RM. The control unit 10 moves to the next step SP15.

  In step SP15, the control unit 10 displays a message indicating that there is not enough free space in the built-in memory 23 to record moving image data, and proceeds to the next step SP16.

  In step SP16, the control unit 10 ends the recording of the moving image when recording of the moving image data in the data file F of the removable medium RM is completed, and moves to the next step SP17 to end the moving image recording processing procedure RT1. To do.

  Incidentally, the control unit 10 is configured to execute the moving image recording processing procedure RT1 periodically (for example, every second) until an instruction to stop moving image recording is received from the user.

(3) Connected playback of moving images (3-1) Timestamp replacement When the digital camera 1 divides and records moving image data in the removable medium RM and the built-in memory 23 as shown in FIG. When reproducing the generated data file F, if an external computer (not shown) or the like is connected to the external interface terminal 8 via a USB cable (not shown), a moving image of each data file F is captured. Playback is performed while connecting in order (hereinafter referred to as connection playback), and an MPEG1 stream flowing on the bus 12 (FIG. 2) can be transferred to the computer.

  For example, when the control unit 10 of the digital camera 1 reads the data file F1 from the first removable medium RM1 and reproduces the moving image data, the moving image data (that is, the audio packet TA and the video packet TV) is transferred to the external interface terminal 8. To the computer.

  In this case, the control unit 10 transfers the moving image data in the MPEG1 stream format, that is, the pack P format shown in FIG. 3, so that the SCR stored in the pack header PH of the pack P and the audio packet TA and The PTSs of the packet headers THA and THV respectively stored in the video packet TV are also transferred.

  At this time, the control unit 10 reads the connection information file C1 (FIG. 6B) corresponding to the data file F1 from the built-in memory 23, and further displays the subsequent file information ci2 from the connection information file C1, that is, the data file F2. By acquiring “FILE002”, it is recognized that the data file F following the data file F1 currently being reproduced is the data file F2 stored in the built-in memory 23.

  After that, the control unit 10 reproduces the moving image data, that is, the packs P11 and P12 from the data file F1 of the removable medium RM1, and displays a predetermined confirmation screen when the remaining reproduction time becomes less than a predetermined time (for example, 60 seconds) The display unit 4 inquires whether or not the next data file F2 is to be continuously reproduced. When receiving an instruction for continuous reproduction, the control unit 10 continues to reproduce the moving image data by reading the data file F2 from the built-in memory 23 after the reproduction of the data file F1.

  At this time, when the value “1” is set in the time stamp replacement flag ci3, the control unit 10 sets the replacement time stamp information (that is, connection SCR information ci4, connection AudioPTS information ci5, and connection VideoPTS information) of the connection information file C1. Based on ci6), the data file F2 is connected to the data file F1 by replacing the SCR and PTS of the pack P21 in the moving image data of the data file F2.

  Specifically, as shown in FIG. 6C, the control unit 10 switches the SCR of the pack P21 from the value “00000000” to the value “00057000” of the connection SCR information ci4, and sets the AudioPTS of the first audio packet TA as the value. The value “00063000” of the connection AudioPTS information ci5 is changed from “00003000”, and the VideoPTS of the first video packet TV is changed from the value “00003000” to the value “00063000” of the connection VideoPTS information ci6.

  Thereafter, the control unit 10 sequentially switches the subsequent SCRs and PTSs while counting up appropriately, so that the pack P, the audio packet TA, and the video packet TV recorded in the data file F2 of the built-in memory 23 are An MPEG1 stream to which SCR and PTS are added so as to continuously count up from the pack P of the data file F1 of the removable media RM1 and the audio packet TA and the video packet TV is transferred to the computer.

  Incidentally, the control unit 10 starts to reproduce the data file F2 in the built-in memory 23, and at the same time, displays on the display unit 4 an exchange message (not shown) indicating that the removable medium RM1 should be exchanged for the removable medium RM2. As a result, the replacement work to the removable medium RM2 is urged. Further, the control unit 10 calculates the remaining time until the data file F2 is completely reproduced at this time and displays it on the display unit 4 so that the replacement work to the removable medium RM2 is completed within the remaining time. It is also possible to allow the user to recognize that moving image data can be reproduced continuously without interruption.

  The control unit 10 sequentially connects the subsequent moving image data, that is, the data file F3 of the removable medium RM2, the data file F4 of the built-in memory 23, and the data file F5 of the removable medium RM3 in the same manner. Based on the connection SCR information ci4, the connection AudioPTS information ci5 and the connection VideoPTS information ci6 stored in C, the MPEG1 stream is transferred to the computer while changing over each SCR and each PTS.

  As a result, as shown in FIG. 6C, the computer that has received the MPEG1 stream can generate the connection file FJ1 that is properly counted up without resetting the SCR, AudioPTS, and VideoPTS. .

  By the way, when the user actually uses the digital camera 1, the removable media RM is lost, and the data file F constituting a part of the moving image is connected for the reason of erasing the data file F by mistake. It may not be possible. In addition, there is a possibility that a user wishes to connect to the next data file F by skipping a specific data file F according to the intention of the user.

  For this reason, the control unit 10 displays a predetermined confirmation screen on the display unit 4 when the remaining time of the data file F currently being reproduced becomes a predetermined time (for example, 60 seconds) or less, whereby the next data file F is displayed. The next data file F is reproduced and connected only when an instruction to continuously reproduce is received from the user as to whether or not to reproduce continuously.

  At this time, the control unit 10 displays various information such as the thumbnail image THM and the user memo YM stored in the connection information file C on the display unit 4 to determine whether or not to connect the next data file F. It can also be used as a judgment material.

  As described above, the control unit 10 of the digital camera 1 connects and reproduces the moving image data divided and recorded on a plurality of media and transfers it to the outside based on the replacement time stamp information stored in the connection information file C. A plurality of data files F are connected, and a continuous MPEG1 stream is generated by exchanging the SCR of the pack P, the AudioPTS of the audio packet TA, and the VideoPTS of the video packet TV in the subsequent data file F.

(3-2) Moving Image Connection / Playback Processing Next, a detailed processing procedure in moving image connection by the digital camera 1 will be described with reference to the flowchart of FIG. That is, when the control unit 10 of the digital camera 1 receives an instruction to connect and play a moving image via the operation unit 3 (FIG. 2), the control unit 10 starts a moving image connection / playback processing procedure RT2, and proceeds to step SP21.

  In step SP21, the control unit 10 initializes a variable n indicating the order of the data file F to a value “1”, and proceeds to the next step SP22. In step SP22, the control unit 10 starts reproduction and transfer of the nth data file Fn, and proceeds to the next step SP23.

  In step SP23, the control unit 10 determines whether or not the connection information file Cn corresponding to the data file Fn is recorded in the built-in memory 23. If an affirmative result is obtained here, this means that the next data file F (n + 1) can be continuously reproduced based on the connection information file Cn. At this time, the control unit 10 performs the next step. Move to SP24.

  In step SP24, the control unit 10 reads the connection information file Cn from the built-in memory 23 and acquires the later file information ci2, thereby recognizing the file name and the like of the data file F (n + 1) to be reproduced next. Control goes to step SP25.

  In step SP25, the control unit 10 displays a confirmation screen on the display unit 4 when the remaining time of the data file Fn is equal to or less than a predetermined time, so that the data file F ( n + 1) is inquired of the user as to whether or not to reproduce. If an affirmative result is obtained here, this means that the next data file F (n + 1) should be connected to the currently reproduced data file Fn and reproduced, and at this time, the control unit 10 The process proceeds to step SP26.

  In step SP26, the control unit 10 determines whether or not the data file F (n + 1) is recorded in the built-in memory 23. If a negative result is obtained here, this indicates that the data file F (n + 1) is recorded on the removable medium RM. At this time, the control unit 10 proceeds to the next step SP27.

  In step SP27, the control unit 10 displays the media exchange message MSG2 (FIG. 7B) on the display unit 4 to request the user to exchange the removable media RM, and proceeds to the next step SP28.

  In step SP28, the control unit 10 determines whether or not the data file F (n + 1) has been replaced with the removable medium RM recorded before the reproduction of the data file Fn is completed. If a positive result is obtained here, the control unit 10 proceeds to the next step SP29.

  On the other hand, if an affirmative result is obtained in step SP26, this indicates that it is not particularly necessary to replace the removable medium RM at this point, and the control unit 10 proceeds to the next step SP29.

  In step SP29, the control unit 10 determines whether or not the time stamp replacement flag ci3 of the connection information file Cn is set to the value “1”, that is, whether or not time stamp replacement is necessary. If a positive result is obtained here, the control unit 10 proceeds to the next step SP30.

  In step SP30, the control unit 10 switches SCR, AudioPTS, and VideoPTS during playback based on the replacement time stamp information (that is, connection SCR information ci4, connection AudioPTS information ci5, and connection VideoPTS information ci6) of the connection information file Cn. Offset variables oSC, oPA, and oPV are set, and the process proceeds to the next step SP31.

  In step SP31, the control unit 10 starts reproduction and transfer of the data file F (n + 1) while changing over SCR, AudioPTS, and VideoPTS according to the following equations (1) to (3), and proceeds to the next step SP32.

SCR = SCR + oSC (1)
AudioPTS = AudioPTS + oPA (2)
VideoPTS = VideoPTS + oPV (3)

  In step SP32, the control unit 10 returns to step SP23 again to further connect and reproduce the next data file F (n + 2) by incrementing the variable n.

  On the other hand, if a negative result is obtained in step SP25, this indicates that the user does not have an intention to continuously reproduce the (n + 1) th data file F (n + 1). 10 moves to step SP33.

  In step SP <b> 33, the control unit 10 displays a predetermined confirmation screen on the display unit 4, thereby determining whether or not to continue the reproduction of the data file F. If a positive result is obtained here, this means that the user may want to skip the data file F (n + 1) and connect the next data file F (n + 2) to the data file Fn for playback. At this time, the control unit 10 proceeds to the next step SP34.

  In step SP34, the control unit 10 stores each value of the time stamp (in other words, SCR, AudioPTS, and VideoPTS) held inside at this time in the built-in memory 23 for use in the subsequent connection processing, and the next step SP35. Move on.

  In step SP35, the control unit 10 returns to step SP23 again to further connect and reproduce the next data file F (n + 2) by incrementing the variable n.

  On the other hand, if a negative result is obtained in step SP23, this indicates that another data file F cannot be connected to the currently reproduced data file Fn and cannot be reproduced. At this time, the control unit 10 performs step SP36. Move on.

  If a negative result is obtained in step SP28, this means that the user cannot prepare the removable medium RM on which the data file F (n + 1) is recorded, and the data file F (n + 1) is added to the data file Fn. ) Is connected and cannot be reproduced. At this time, the control unit 10 proceeds to step SP36.

  Further, if a negative result is obtained in step SP33, this indicates that the user does not have the intention to connect and reproduce another data file F to the data file Fn currently being reproduced. The unit 10 moves to step SP36.

  In step SP36, the control unit 10 ends the reproduction and transfer processing of the moving image when the reproduction of the data file Fn is completed, and moves to the next step SP37 to end the moving image connection / reproduction processing procedure RT2.

(4) Operation and Effect In the above configuration, when the control unit 10 of the digital camera 1 captures a long-time moving image, the recording destination of the data file F storing the audio data DA and the video data DV is set as the removable medium RM. Alternatively, the moving image data is continuously recorded without interruption by switching to the built-in memory 23 alternately.

  At this time, the control unit 10 resets the SCR, AudioPTS, and VideoPTS for each data file F, and generates a connection information file C that stores the replacement time stamp information and the like when switching the recording destination, and records it in the internal memory 23. To do.

  Further, the control unit 10 reproduces moving image data divided and recorded in a plurality of recording destinations and transfers the moving image data to an external computer or the like, based on the replacement time stamp information of the connection information file C, SCR, AudioPTS. And by reproducing the video PTS while changing it, an MPEG1 stream in which the SCR, AudioPTS, and VideoPTS count up appropriately is generated and transferred.

  Therefore, even if the moving image data is divided into a plurality of data files F and distributed and recorded in a plurality of recording destinations (that is, the removable media RM and the built-in memory 23), the control unit 10 of the digital camera 1 has a large capacity. A connection file FJ1 (FIG. 6C) composed of one MPEG1 stream whose time stamp (that is, SCR, AudioPTS, and VideoPTS) is appropriately counted up can be created in an external computer or the like having a storage medium.

  At this time, since the control unit 10 can acquire the time stamp to be replaced from the connection information file C, the control unit 10 can obtain an accurate time stamp as compared with the case of analogy from the last time stamp of the data file F that is the connection source. Can be replaced. As a result, the control unit 10 can eliminate the possibility of switching to an incorrect time stamp due to analogy or the like, and can switch to an optimal time stamp, so that the moving image data after connection is played back by another playback device. In this case, there is no problem that an error caused by the time stamp occurs and the operation stops.

  Further, since the control unit 10 can assign the time stamps of the data files F recorded separately on the removable medium RM or the built-in memory 23 from the correct initial values, each data file F can be assigned by another playback device or the like. When it is played back independently, it can be played back correctly without causing a problem such as “cannot be played back because the time stamp starts from a value other than the initial value”.

  Further, since all the connection information file C is recorded in the built-in memory 23, the control unit 10 may occur when the connection information file C is recorded on the removable medium RM together with the corresponding data file F, “the relevant removable medium RM The next data file F cannot be specified because the data file is lost, and the data file F cannot be skipped and another data file F cannot be connected.

  In addition, when the moving image data is recorded in the data file F2 of the built-in memory 23, the control unit 10 maintains the bit rate equivalent to the case of recording the moving image data in the data file F1 of the removable medium RM. There is no problem that may occur when recording is performed at a different rate, such as a sudden change in image quality during playback, which makes the user feel uncomfortable.

  According to the above configuration, when the control unit 10 of the digital camera 1 captures a long-time moving image, the recording destination of the data file F storing the audio data DA and the video data DV is the removable medium RM or the built-in memory 23. The SCR, AudioPTS, and VideoPTS are reset for each data file F, and the connection information file C that stores the replacement time stamp information is generated and recorded in the built-in memory 23 when the recording destination is switched. When the moving image is played back and transferred, an MPEG1 stream in which the time stamp is appropriately counted up is generated by playing back the time stamp, based on the time stamp information in the connection information file C. be able to.

(5) Other Embodiments In the above-described embodiment, when transferring moving image data to an external computer or the like while reproducing the moving image data, the time stamp (ie, SCR, AudioPTS and VideoPTS) is changed. Although the present invention is not limited to this, the present invention is not limited to this. For example, when only moving image data is reproduced and not transferred to a computer or the like, the time stamp is not changed, and the data is based on the connection information file C. The file F may be reproduced continuously in the recording order.

  In the above-described embodiment, the case where the user is inquired whether to connect the next data file F in step SP25 of the moving image connection / playback processing procedure RT2 (FIG. 9) has been described. The invention is not limited to this, and the next data file F may be connected unconditionally without inquiring the user.

  Further, in the above-described embodiment, the case where the reproduction of the data file F and the change of the time stamp are performed in parallel in step SP31 of the moving image connection reproduction processing procedure RT2 (FIG. 9) has been described. The present invention is not limited to this. For example, time stamp replacement may be performed in advance, and then the data file F may be reproduced.

  Further, in the above-described embodiment, the case where moving image data is transferred while being reproduced has been described. However, the present invention is not limited to this, and for example, without reproducing moving image data, that is, audio data DA and The video data DV may not be decoded and displayed on the display unit 4, and only the data file F may be transferred while changing the time stamp.

  Further, in the above-described embodiment, the case where a plurality of connection information files C are generated in the built-in memory 23 has been described. However, the present invention is not limited to this, for example, a connection that collectively manages various types of information in a database format. You may make it manage replacement time stamp information etc. using an information database.

  Further, in the above-described embodiment, the case where only one media slot 7 is provided and the moving image data recording destination is switched to the removable medium RM or the built-in memory 23 has been described. However, the present invention is not limited to this. For example, when there are two or more media slots, the recording destination of the moving image data may be switched to the removable media RM of each media slot. In this case, only the connection information file C may be recorded in the built-in memory 23.

  Further, in the above-described embodiment, the case where moving image data is reproduced by the digital camera 1 has been described. However, the present invention is not limited to this, and for example, all connection information files C and data files in the built-in memory 23 are used. F is transferred to an external computer or the like, and the moving image connection / playback processing procedure RT2 (FIG. 9) is executed on the computer so that the data file F is continuously played back to generate one MPEG1 stream. Also good.

  Further, in the above-described embodiment, the case where moving image data is encoded by the MPEG1 system and recorded as the data file F has been described. However, the present invention is not limited to this, and for example, Motion JPEG, MPEG2, H.264, etc. Other encoding schemes such as H.264 / MPEG4 AVC (Advanced Video Codec) may be used. In short, as long as continuous data is divided at relatively short intervals and encoded with a time stamp, Good.

  Further, in the above-described embodiment, the case where the present invention is applied when a digital camera 1 captures and reproduces a moving image has been described. However, the present invention is not limited to this, and an audio recording device such as a so-called IC recorder is used. The present invention may be applied to a case where a continuous signal is recorded and recorded while being switched and switched to a plurality of recording destinations.

  Further, in the above-described embodiment, the case where the present invention is applied to the digital camera 1 has been described. However, the present invention is not limited to this. For example, a digital video camera or a mobile phone having a moving image capturing function, a PDA (Personal) The present invention may be applied to various electronic devices such as Digital Assistant).

  Further, in the above-described embodiment, the image compression / expansion circuit 19 and the audio compression / expansion circuit 21 as the encoding means, the control unit 10 as the recording means, the removable media RM and the built-in memory 23, and the connection information recording means. Although the case where the digital camera 1 as a code recording apparatus is configured by the control unit 10 and the built-in memory 23 as described above, the present invention is not limited to this, and encoding means and recording means having other various circuit configurations are described. And the connection information recording means may constitute a code recording device.

  Further, in the above-described embodiment, the media interface 22 and the control unit 10 as reading means, the built-in memory 23 as the connection information acquisition means, the media interface 22 and the control unit 10, and the control unit 10 as replacement means The case where the digital camera 1 as the code sending device is configured by the bus 12 as the sending means and the external interface 27 has been described. However, the present invention is not limited to this, and the reading means having various circuit configurations and the connection You may make it comprise a code | symbol transmission apparatus by an information acquisition means, a replacement means, and a sending means.

  The present invention can also be used in electronic devices such as digital cameras and IC recorders.

It is a basic diagram which shows the external appearance structure of a digital camera. It is a basic diagram which shows the circuit structure of a digital camera. It is a basic diagram which shows the data structure of a pack. It is an approximate line figure used for explanation of a flow of image and sound data at the time of recording. It is a basic diagram with which it uses for description of switching of the recording destination of moving image imaging data. It is a basic diagram which shows the mode of the time stamp replacement | exchange using a connection information file. It is a basic diagram which shows the mode of the display of a message. It is a flowchart which shows a moving image recording process procedure. It is a flowchart which shows a moving image reproduction | regeneration processing procedure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Digital camera, 3 ... Operation part, 4 ... Display part, 10 ... Control part, 12 ... Bus, 19 ... Image compression / decompression circuit, 21 ... Audio compression / decompression circuit, 22 ... Media interface, 23 ... Internal memory, 27 ... External interface, RM ... Removable media, DA ... Audio data, DV ... Video data, THA, THV ... Packet header, TA ... Audio packet, TV ... Video packet, P ... pack, PH ... pack header, F ... data file, C ... connection information file, FJ1 ... connection file.

Claims (12)

Encoding means for sequentially encoding successive signals;
The code generated by the encoding means is divided into recording units corresponding to a predetermined time, and a time stamp indicating the timing to be reproduced for each recording unit is given and stored in a predetermined packet. Recording means for changing and recording the time stamp of the packet distributed to the second and subsequent recording media so as to start from a predetermined initial value for each of the recording media,
When the timing at which the first packet in the second and subsequent recording media should be reproduced is recorded in a predetermined recording section as connection information corresponding to each recording medium, when the code is read out and transmitted to a predetermined destination After the code of each packet recorded on the first recording medium is transmitted at a timing according to the time stamp, the time stamp of each packet recorded on the second and subsequent recording media corresponds to each recording medium. A code recording apparatus comprising: connection information recording means for sending each packet after switching the connection information according to the timing to be originally reproduced. A detecting means for detecting the free space of the recording medium,
The recording means is
When recording the packet on the recording medium, if the free space becomes equal to or less than a predetermined value, the user confirms whether or not the packet can be recorded on the next recording medium, and the next recording is performed only when it is permitted. The code recording apparatus according to claim 1, wherein the packet is recorded on a medium. When other data is recorded on the recording medium, the user confirms whether or not the other data can be deleted before or during recording of the packet, and deletes the other data if permitted. The code recording apparatus according to claim 1, further comprising: means. The above connection information
The code recording device according to claim 1, wherein content information representing the content of the code recorded in the corresponding connection information is recorded. An encoding step for sequentially encoding successive signals;
The code generated in the above encoding step is divided into recording units corresponding to a predetermined time, and a recording unit is provided with a time stamp indicating the timing to be reproduced in each recording unit, and each packet is stored in a plurality of packets. A recording step in which the time stamp of the packet distributed to the second and subsequent recording media is changed and recorded so as to start from a predetermined initial value for each of the recording media;
When the timing at which the first packet in the second and subsequent recording media should be reproduced is recorded in a predetermined recording section as connection information corresponding to each recording medium, when the code is read out and transmitted to a predetermined destination After the code of each packet recorded on the first recording medium is transmitted at a timing according to the time stamp, the time stamp of each packet recorded on the second and subsequent recording media corresponds to each recording medium. And a connection information recording step of sending each packet after switching the connection information according to the timing to be originally reproduced. When a code generated based on continuous signals is packetized every minute corresponding to a predetermined time, a time stamp indicating the timing to be reproduced is assigned to each packet, and distributed and recorded on a plurality of recording media. Read means for sequentially reading the packets from the recording medium recorded by changing the time stamps of the packets to be distributed to the subsequent recording media to start from a predetermined initial value for each recording medium;
Connection information acquisition means for acquiring connection information storing a timing at which a packet recorded on the second and subsequent recording media should be reproduced from a predetermined recording unit;
A changing means for changing the time stamp given to the packet read from the second and subsequent recording media based on the timing of the connection information corresponding to each recording medium to be originally reproduced;
The packet read from the first recording medium by the reading means, and the packet read from the second and subsequent recording media by the reading means and the time stamp changed by the changing means. A code sending device comprising: sending means for sequentially sending to a predetermined destination. The reading means is
When reading the packet from the recording medium, if it is recognized that there is a next recording medium from which the next packet is to be read based on the connection information, the packet is continuously read from the next recording medium. The code transmission device according to claim 6, wherein the packet is read from the next recording medium when the user is inquired about whether or not the result is affirmative. The reading means is
Asks the user whether to continue reading the packet from the next recording medium, and if not, whether to skip the next recording medium and read the packet from the next recording medium. The code transmission device according to claim 7, wherein when the user is inquired and affirmed, the packet is read from the next recording medium. The above connection information
Content information representing the content of the code recorded in the corresponding connection information is recorded respectively.
The reading means is
8. The code transmission device according to claim 7, wherein when the user is inquired whether to continuously read out the packet from the next recording medium, the content information is displayed on a predetermined display means. Some or all of the plurality of recording media are exchangeable recording media,
The reading means is
When reading the packet from the recording medium, if it is recognized that the recording medium from which the packet is to be read next is the replaceable recording medium based on the connection information, the packet is replaced with the replaceable recording medium. The code sending device according to claim 6, wherein a request is made to the user. The sending means is
By sending the packet to an external device having a large-capacity recording means capable of recording all the packets recorded on the plurality of recording media, the large device is connected in a state where all the packets are connected by the external device. The code sending device according to claim 6, wherein the code is recorded by a capacity recording means. When a code generated based on continuous signals is packetized every minute corresponding to a predetermined time, a time stamp indicating the timing to be reproduced is assigned to each packet, and distributed and recorded on a plurality of recording media. A reading step of sequentially reading the packets from the recording medium recorded by changing the time stamps of the packets to be distributed to the subsequent recording media from a predetermined initial value for each recording medium; and
A connection information acquisition step of acquiring connection information storing the timing to be originally reproduced of the packets recorded in the second and subsequent recording media from a predetermined recording unit;
A step of replacing each of the time stamps attached to the packets read from the second and subsequent recording media based on the original timing of the connection information corresponding to each recording medium;
The packet read from the first recording medium by the reading step, and the packet read from the second and subsequent recording media by the reading step and the time stamp changed by the replacement step. A code sending method comprising: a sending step for sequentially sending to a predetermined destination;

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