JP4272670B2 - Recording apparatus, reproducing apparatus, and recording method - Google Patents

Description

  The present invention relates to a recording / reproducing apparatus for recording / reproducing an optical disc such as a DVD-RAM, a DVD-R, a DVD-RW, a DVD + RW, and more particularly to an improvement in editing moving image data recorded on an optical disc.

In video editing, the risk of losing the original moving image due to editing mistakes, etc. is constantly increasing. If video editing is realized on consumer devices used by the general public, it is necessary to avoid such deficiencies. In recent years, DVD recording apparatuses that have appeared on the market have a function of temporary editing in addition to the main editing based on such demands. Temporary editing is an editing operation in which pointer information that specifies picture data that is the start point and end point of a playback section is defined according to a user operation. In contrast, there is a feature in that there is no processing for the original moving image. Since there is no processing on the original moving image, the editing operation can be performed again and again when editing fails, and even a beginner of moving image editing can work on moving image editing with peace of mind. Regarding moving image editing, there are known literature inventions described in the following patent documents.
JP 11-45555 (Sony Corporation) JP-A-2-162589 (Matsushita Electric Industrial Co., Ltd.)

By the way, temporary editing can work on video editing with peace of mind, but it cannot guarantee that the video display is not interrupted when switching between playback sections. This is because the two playback sections are arranged apart from each other on the disc, and the two playback sections need to be randomly accessed.
In addition, moving image data recorded on a DVD contains a large amount of picture data that has been compression-encoded according to the MPEG standard based on the inter-frame correlation with the preceding and following picture data. Is assumed. When multiple pointer information is defined by provisional editing and two or more playback sections are specified, picture data positioned at the end of the preceding one of the two playback sections, and picture data positioned at the head of the succeeding one Are encoded with other picture data at the beginning, and it is difficult to continuously reproduce these playback sections, and the preceding playback section and the subsequent playback section are connected to each other. Then, many interruptions of moving images appear.

On the other hand, in movies and TV broadcasts where there are many opportunities for the general public to come in contact, various ingenuity on the visual effect is applied to connect the playback sections, and the playback section that is the result of temporary editing is It is far from the perfection of professionally produced editing products, and makes users feel unsatisfactory. An object of the present invention is to provide a recording apparatus capable of recording moving image data so that various processes can be performed at the joining of playback sections while guaranteeing recovery upon editing failure.

In order to solve the above problems, a recording apparatus according to the present invention is a recording apparatus for an optical disc on which moving image data is recorded, and accepting means for receiving an operation for specifying at least two reproduction sections from the moving image data from an operator. And writing a duplicate portion on the optical disc, which is a duplicate of the vicinity of the end of the preceding playback section that is the preceding playback section of the two playback sections and the vicinity of the leading end of the subsequent playback section that is the playback section on the subsequent side. A duplicating means; and a writing means for writing a flag to the optical disc, wherein the duplicating portion is a portion to be processed, and when the flag is set to ON, near the end in the preceding playback section This indicates that the part before the part and the part near the tip of the subsequent playback section are played back via the duplicate part, and is set to off. If, without going through the copied portion, said indicates that the preceding reproduction reproduction section and the subsequent and reproduction section sequentially, the video data is compression-coded picture data string, the processing, the preceding is between seamless processing to achieve visual effects show the compression encoded picture data included in the reproduction section and the compression-encoded picture data included in the subsequent reproduction section, wherein the replication means, the preceding reproducing duplicate the necessary to the processing of a predetermined number of compressed coded picture data included in a predetermined number of compressed coded picture data and the subsequent reproduction section included in the section, written on the optical disc is characterized in that .

As described above, since the recording apparatus according to the present invention has the above-described configuration, it is possible to perform various processes on the visual effect on this duplicated portion. If the editing is successful, the flag is set to ON so that the playback device plays back the portion near the end of the preceding playback section and the portion after the top of the subsequent playback section via the duplicate portion. . As a result, the user can reproduce the editing result that he / she has performed and immerse himself in the bag.

If editing has failed or editing has not been completed, the flag is set to OFF and the preceding playback section and the subsequent playback section are played back, so that the specified playback section is played back as if nothing had happened. be able to. Since recovery in the event of editing failure is certain, the user can increase opportunities to challenge various editing techniques that involve processing.
Further, since the duplication parts are limited to the vicinity of the end of the preceding reproduction section and the vicinity of the front end of the subsequent reproduction section, the data amount is doubled along with the duplication, and the optical disk is not full.

(First embodiment)
Hereinafter, an embodiment of an optical disc according to the present invention will be described with reference to the drawings. The optical disc according to the first embodiment is a phase change type optical disc, and is a DVD-RAM, DVD-RW (hereinafter abbreviated as “DVD”) capable of recording moving image data in accordance with the DVD-VIDEO RECORDING standard. Suppose that

  A directory and files shown in FIG. 1 are recorded on the DVD. In FIG. 1, a VIDEO_RTAV (RealTime Recording Audio Video) directory is arranged immediately under the ROOT directory, and an AV file in which one VOB is recorded and a management file in which various types of management information are recorded are arranged thereunder. FIG. 2A is a diagram detailing the configuration of the VOB recorded in the AV file in stages. A VOB (Video Object) is a program stream conforming to the ISO / IEC13818-1 standard obtained by multiplexing a video stream and an audio stream, and a program_end_code is not added to the end portion thereof. In the figure, the video stream located in the first stage is an array of picture data composed of a plurality of picture data. These picture data strings are divided into a plurality of GOPs as shown in the second row. The GOP unit picture data is divided into 2 KByte units. On the other hand, the audio stream located on the right side of the first stage is also divided into a plurality of units of about 2 KBytes as shown in the third stage. The GOP unit picture data divided into 2 KBytes is interleave-multiplexed with the audio stream divided into about 2 KByte units to form a pack sequence shown in the fourth row. Such a pack row forms a plurality of VOBUs (Video Object Units) shown in the fifth row, and the VOB shown in the sixth row has a configuration in which a plurality of VOBUs are arranged in time series. The lead line shown by the broken line in this figure clarifies which part of the lower logical format is detailed in the upper logical format. Referring to the broken line in the figure based on this notation, the VOBU at the fifth level corresponds to the pack sequence shown at the fourth level, and further corresponds to the picture data in GOP units shown at the second level. .

  As is clear from the correspondence shown by the broken line, VOBU means at least one GOP consisting of picture data whose playback time is about 0.4 to 1.0 seconds, and audio multiplexed with this picture data. A unit that includes data, and is configured by arranging video packs and audio packs according to the MPEG standard. Next, picture data included in the GOP will be described. FIG. 2B is a diagram showing the internal configuration of the GOP. Picture data is compressed using the Bidirectionally Predictive (B) picture that is compressed using the correlation with the image to be reproduced in the past and future directions, and the correlation with the image that is to be reproduced in the past direction. The Predictive (P) picture that is being used is converted into any of the Intra (I) pictures that are compressed using the spatial frequency characteristics within the image for one frame without using the correlation. Picture data is displayed in one display period (also called a video frame) of about 1/33 seconds.

  Next, the management file will be described. FIG. 3 shows the internal structure of the management file. As shown in FIG. 3, the management file includes an M_AVFI table and a PGCI table. The “M_AVFI (Motion AV File Information) table” is a management table for VOBs, and as shown by a dashed lead line hy1, attribute information “VOB STI (Stream Information) # 1. ”And“ VOBI # 1 ... # L ”.

  In “VOB STI”, what video attributes are included in the picture data included in each VOB (coding mode, aspect ratio, NTSC / PAL, line21 information, etc.), and how the audio data included in each VOB is The audio attributes (coding mode, number of channels, frequency, etc.). “VOBI (Video Object Information)” is a VOB type “VOB_Type” as shown by a dashed lead line hy2, and a reproduction start time “ VOB_Start_PTM '', playback end time `` VOB_End_PTM '' indicating the time when playback of the last picture data of the video stream constituting the VOB ends, recording date information `` VOB_REC_TM '' indicating the first recording date of the VOB, VOB STI # 1, A pointer “VOB_STIN” that designates a #K corresponding to this VOB as indicated by an arrow Pr1, and time map information “TMAPI” for each VOBU constituting the VOB. TMAPI includes “TMAP_GI”, “TM_ENT # 1 to #S”, and “VOBU_ENT # 1 to #T” as indicated by a dashed arrow hy3.

  “VOBU_ENT” is information associated with each VOBU. As shown by the broken arrow hy4, the size of the I picture located at the head of the corresponding VOBU is “1STREF_SZ” and the playback time of the corresponding VOBU “VOBU_PB_TM” ”And the corresponding VOBU size“ VOBU_SZ ”. “TM_ENT” is the information indicating the location of the time entry every 10 seconds, as shown by the dashed arrow hy5, “VOBU_ENTN” indicating the VOBU including this time entry, and the time entry from the beginning of the VOBU indicated by VOBU_ENTN “TM_DIFF” indicating the offset time until “VOBU_ENTR” and “VOBU_ADR” indicating the offset data from the beginning of the VOB to the beginning of the VOBU indicated by VOBU_ENTN.

  “TMAP_GI” is information for managing the entire TMAPI. As indicated by the dashed arrow hy6, “TM_ENT_Ns” indicating the number of time entries set in the VOB and “VOBU_ENT_Ns” indicating the number of VOBU_ENTs included in TMAPI. And “TM_OFS” indicating the offset from the beginning of the VOB to one time entry, and “ADR_OFS” indicating the offset from the beginning of the AV file to the beginning of the VOB.

  FIG. 4 is a diagram schematically illustrating the relationship between TMAPI and VOBU. As shown in the figure, the correspondence between the playback time of each VOBU and the size of the VOBU is taken by a combination of VOBU_PB_TM (PB_TM in the figure) and VOBU_SZ. TM_DIFF in TM_ENT indicates how many seconds after the start of VOBU playback the time entry is reached. With TMAPI having the above structure, it is possible to specify which VOBU corresponds to an arbitrary time code.

  Next, the PGCI table will be described. The PGCI table includes a plurality of playlist information. Playlist information (abbreviated as “PLI” in FIG. 3) is an array of CELL information, and is a playlist that instructs the playback device to play back the playback sections sequentially. The CELL information (abbreviated as “CELLI” in FIG. 3) is pointer information indicating a playback section set based on a temporary editing operation by the user. In the temporary editing, an operation for specifying the start point (In point) of the playback section and the end point (Out point) of the playback section is performed. CELL information includes “VOBI_SRP” that indicates the target VOB, “Cell_Start_PTM” that is the time code that specifies the picture data that is the In point of the picture data included in the VOB, and Out of the VOB that is included in the VOB. It includes a time code “Cell_End_PTM” that specifies picture data to be a point. This time code has the time accuracy of the video frame which is the display period of the picture data, and the CELL information is expressed with the time accuracy of this video frame.

  The order of CELL information in Playlist information means the order of playback sections. In other words, when CELL information is stored in the playlist information in the order of CELL information # 1, # 2, # 3, the corresponding playback sections # 1, # 2, # 3 are `` # 1 '', `` # It will be played back in the order of “2” and “# 3”. FIG. 5 is a diagram schematically showing how a playback section is specified by CELL information #x, # x + 1. As shown in FIG. 5, the playback section is defined by a hierarchical structure including three layers of VOB-VOB information-CELL information. The user sets the In and Out points of playback section #x for CELL information #x in this figure, and the In and Out points of playback section # x + 1 for CELL information # x + 1 It is assumed that it is set. The CELL information #x specifies the playback section #x. VOBI_SRP in this CELL information #x specifies VOB # x via VOB information #x as shown by arrow vy1, and Cell_Start_PTM in CELL information #x is the In point of playback section #x as shown by arrow vy2. Cell_End_PTM in the CELL information #x indicates the Out point of the playback section #x as indicated by an arrow vy3.

  On the other hand, the CELL information # x + 1 identifies the reproduction section # x + 1. VOBI_SRP in CELL information # x + 1 specifies VOB # x + 1 via VOB information # x + 1 as indicated by arrow vy4, and Cell_Start_PTM in CELL information # x + 1 is indicated by arrow vy5 The In point of the playback section # x + 1 is indicated, and Cell_End_PTM in the CELL information # x + 1 indicates the Out point of the playback section # x + 1 as indicated by an arrow vy6. The playlist information is handled as one edited product by such an array of CELL information.

  Now, the picture data specified by the CELL information includes a lot of picture data that has been compression-encoded according to the MPEG standard based on the inter-frame correlation with the preceding and succeeding picture data. This compression encoding is performed under the assumption that all picture data constituting a VOB (VOBU) is reproduced sequentially from the beginning at the time of decoding. On the other hand, as shown in FIG. 5, the picture data located at the end of the preceding one of the playback sections designated two or more and the picture data located at the beginning of the succeeding one are continuously reproduced. It is contrary to assumptions. Therefore, continuous playback of a plurality of playback sections specified by the playlist information becomes difficult, and there are many moving image breaks or the like in the above-described connection between the preceding playback section and the subsequent playback section. Each time the playback section is switched, the image playback is interrupted. Therefore, the edit product defined by the playlist information is, in a word, a patchy edit product.

  Some processing is required for the above-mentioned joints in order to eliminate the interruption and show the edited product with a high degree of completion. There are types of processing methods for smoothly showing playback section joining, such as seamless connection, fade-out connection, fade-in connection, and cross-fade connection. FIG. 6A to FIG. 6D are diagrams for explaining each of a plurality of types of processing. In the present specification, the parts to be processed are referred to as “the vicinity of the end of the preceding playback section” and “the vicinity of the end of the subsequent playback section”. 6A to 6D, it is assumed that the end vicinity includes four picture data such as picture data PC1 to PC4, and the front end vicinity includes four picture data such as picture data PC5 to PC8.

  FIG. 6 (a) is a diagram showing seamless connection. In this figure, after the last picture data PC4 in the vicinity of the end of the preceding playback section is played back, one video frame is displayed in the vicinity of the end of the subsequent playback section. This is a connection mode in which the first picture data PC5 is displayed, and is a processing technique that eliminates the apparent interruption of reproduction. FIG. 6B shows a fade-out connection. In this figure, the brightness of the picture data belonging to the vicinity of the end is lowered in the order of picture data PC1 to PC3, the picture data PC4 is displayed with the lowest brightness, and then the picture data PC5 in the vicinity of the front end of the subsequent playback section is displayed. It is a connection form of displaying.

  FIG. 6C is a diagram showing the fade-in connection. In this figure, after the picture data PC4 in the vicinity of the end is reproduced, the picture data PC5 in the vicinity of the end is displayed with the lowest brightness, and then the picture is displayed. In this connection form, data PC6 to PC8 are displayed in order of increasing brightness. FIG. 6D shows a crossfade connection. The picture data PC1 to PC4 belonging to the vicinity of the end are displayed while gradually decreasing the brightness as in FIG. 6B. On the other hand, the picture data PC5 to PC8 belonging to the vicinity of the leading edge are displayed while gradually increasing the brightness similarly to FIG. 6C. Picture data PC4 and picture data PC5, picture data PC2 and picture data PC6, picture data PC3 and picture data PC7, picture data PC4 and picture data PC8, etc. The picture data PC8 of the subsequent playback section appears at the time point when it should be displayed with the brightness of. The above is the processing method for smoothly showing the connection between the two playback sections.

  Naturally, the processing referred to in this specification is not only processing for realizing the visual effect of smoothly showing the joining of playback sections, but also synthesis of computer graphics and animation, addition of telop, etc. Included in the category are all processes involving data manipulation for VOBs. How to set the vicinity of the end and the vicinity of the tip will be described.

  FIG. 7A to FIG. 7B are diagrams showing how to set the vicinity of the terminal end and the vicinity of the front end when the processing technique is seamless connection. In FIG. 7A, from the preceding VOB # x, the VOBU # (Out) including the Out point of the preceding playback section to the next two VOBUs are used as the vicinity of the end, and the subsequent CELL information # x + The VOBU including the In point of the subsequent playback section is set as the vicinity of the tip.

  The reason for re-encoding up to two VOBUs ahead is to maintain synchronized playback with audio data. Because picture data is compression-encoded based on the correlation with other picture data, it is not played back immediately after it is read from the DVD, but waits for subsequent picture data to be played back. In most cases, it must be done. For this reason, picture data is stored in a buffer in the playback device from when it is read from the DVD until it is played back, and the storage period in this buffer can be up to 1 second. On the other hand, the audio data has no or only a short period of time stored in the buffer in the playback device, so that the picture data in the GOP is the same as the audio data read from the DVD after 1 second has elapsed since its own reading. Synchronized playback may occur.

  Audio data read from a DVD after 1 second from the reading of picture data is often one or two VOBUs ahead of the picture data, so the picture data contained in a certain VOBU Depends on the VOBU one or two following. Because of such dependency relationships, up to two VOBUs ahead of the re-encoding are targeted for re-encoding.

  The basis for defining the end vicinity and the end vicinity in this way is described in US Pat. No. 6,148,140 of the applicant's prior art, so refer to this publication for details. In the case of seamless connection, the continuous length of the preceding playback section needs to be a predetermined length or more. This is because if the continuous length of the preceding playback section is short, sufficient data is not accumulated in the buffer due to the playback of the preceding playback section, so the buffer underflow occurs during disk seek caused by random access from the preceding playback section to the subsequent playback section. This is because.

  On the other hand, in types of processing such as fade-out connection, fade-in connection, and cross-fade connection, as shown in FIG. 7A, in addition to the VOBU shown in FIG. Up to the end portion near the end, and up to k VOBUs after the VOBU including the In point are near the end. The numbers j and k are ranges in which visual effects such as fade-in connection, fade-out connection, and cross-fade connection extend, and also depend on how the user wants to apply the visual effect. That is, it can be said that it is a fluid number. Usually, the vicinity of the end and the vicinity of the tip are different from each other. However, for the sake of simplicity in the following description, the end of the vicinity is only VOBU # (Out) including the Out point, and the vicinity of the tip. Is only VOBU # (In) including the In point. The above is the outline of processing for VOB. It should be noted here that provisional editing is based on the principle that no processing is performed on the original VOB, so that these processing techniques cannot be applied directly.

  Therefore, in the present embodiment, the vicinity of the end of the preceding playback section in the VOB and the vicinity of the front end of the subsequent playback section are duplicated, and this duplicated portion is written on the DVD for processing. FIG. 8 is a diagram showing a duplicate portion written for data processing. In this figure, duplication as shown by arrows Cy1 and Cy2 is performed. In this figure, VOB # z is a duplicate of the vicinity of the end of the preceding playback section (from the VOBU # (Out) including the Out point to the next two VOBUs), and VOB # z + 1 is the subsequent playback section This is a duplicate of the vicinity of the tip (VOBU # (In) including the In point).

  For these VOB # z and # z + 1, VOB information #z and # z + 1 are set like other VOBs, and a playback section is specified by Temp_Cell information #z and Temp_Cell information # z + 1. . FIG. 9 shows a DVD in which VOB information #z, # z + 1 and Temp_Cell information #z, # z + 1 are written together with VOB # z, # z + 1. It can be seen that VOB information #z and # z + 1 are written as indicated by arrows by1 and by2, and Temp_Cell information #z and Temp_Cell information # z + 1 are written as indicated by arrows by3 and by4. Therefore, the reproduction section is defined as a playback section with a three-layer structure of VOB-VOB information-CELL information. These VOB # z and # z + 1 are different from other VOBs in that they are specified by special type of cell information called “Temp_Cell information”. Temp_Cell information is a CELL that specifies a playback section to be linked and played between the preceding playback section specified by the preceding CELL information in the Playlist information and the subsequent playback section specified by the subsequent CELL information. Information. Since VOB # z and # z + 1 specified by Temp_Cell information #z and # z + 1 are duplicate parts that can be processed respectively, this VOB # z and # z + 1 must be specified by Temp_Cell information Thus, after the reproduction of the preceding reproduction section #x is completed, the reproduction portion that can be processed can be reproduced before the reproduction of the subsequent reproduction section # x + 1 is started.

  Next, the data structure of Temp_Cell information and the data structure of CELL information when Temp_Cell information is set will be described with reference to FIG. FIG. 10 is a diagram showing the data structure of CELL information of the playlist information according to the first embodiment, and FIG. 11 shows how the VOB is specified by the CELL information and Temp_Cell information shown in FIG. FIG. The difference between the internal structure of the playlist information in FIG. 10 and the playlist information shown in FIG. 3 is indicated by thick frames wk1, wk2, and wk3. In FIG. 10, the playlist information includes Temp_Cell information # 1 to #M (abbreviated as Temp_CellI in the drawing) shown in the thick frame wk1 in addition to the CELL information # 1 to #N shown in FIG. As shown in the thick frame wk3, the Temp_Cell information includes “VOBI_SRP” indicating the corresponding VOB, “Cell_Start_PTM” indicating the start point of the playback section in the VOB, and “Cell_End_PTM” indicating the end point of the playback section in the VOB, It consists of “Temp_Cell_SRP” indicating Temp_Cell information that should follow this Temp_Cell information. Temp_Cell_SRP designates a link from VOB # z to VOB # z + 1 indicated by an arrow yp1 in FIG.

  Further, how Cell_Start_PTM and Cell_End_PTM in the Temp_Cell information are set is as indicated by arrows cy1, cy2, cy3, and cy4 in FIG. Cell_Start_PTM in Temp_Cell information #z specifies the first picture data of VOB # z as indicated by arrow cy1 in FIG. 11, and Cell_End_PTM is the same picture as the Out point specified by the user as indicated by arrow cy2. Data is specified. Cell_End_PTM in Temp_Cell information # z + 1 specifies the last picture data of VOB # z + 1 as shown by arrow cy3, and Cell_Start_PTM is the same as the In point specified by the user as shown by arrow cy4 Picture data is specified for VOB # z + 1. Since VOB # z and # z + 1 are originally a duplication part near the end of the preceding reproduction section and a duplication part near the leading end of the subsequent reproduction period, Cell_End_PTM of Temp_Cell information #z is Cell_End_PTM of CELL information #x The Cell_Start_PTM of Temp_Cell information # z + 1 specifies the same picture data as the picture data specified by Cell_Start_PTM of CELL information # x + 1.

  Next, the data structure of CELL information in FIG. 10 will be described. 10 is the same as FIG. 3 in that “VOBI_SRP”, “Cell_Start_PTM”, and “Cell_End_PTM” are set in the CELL information of FIG. What is different is the part surrounded by the thick frame wk3, and the points where “Trimming_Start_PTM”, “Trimming_End_PTM”, “Temp_Cell_SRP”, “Effect_Type”, and “Temp_Cell_FLAG” are set are the same as the CELL information shown in FIG. It is a difference.

  “Temp_Cell_SRP” is pointer information indicating the route-destination Temp_Cell information when passing through the Temp_Cell information. By this Temp_Cell_SRP, the link sy1 from CELL information #x to Temp_Cell information #z in FIG. 11 is explicitly specified. The route to Temp_Cell information is defined by the link relationship by Temp_Cell_SRP because the duplicated parts (VOB # z and VOB # z + 1) specified by Temp_Cell information are integrated into one VOB by processing, or 3 This is because of the possibility of being divided into two or more. For example, when VOB # z + 1 is integrated with VOB # z, update to cover the entire new VOB # z with Cell_Start_PTM and Cell_End_PTM in Temp_Cell information #z, and Temp_Cell_SRP included in Temp_Cell information # z + 1 Should be deleted.

  When VOB # z + 1 is divided into VOB # z + 1 and VOB # z + 2, Temp_Cell information # z + 1 is divided into Temp_Cell information # z + 1 and # z + 2. The playback section in VOB # z + 1 is specified by Temp_Cell information # z + 1, the playback section in VOB # z + 2 is specified as Temp_Cell information # z + 2, and these Temp_Cell information # z + 1, #z The link between +2 can be specified by Temp_Cell_SRP. Since the VOB of the duplicate part that has the possibility of integration / division is specified in the Temp_Cell information that specifies the link relationship, if the duplication part is integrated / division, it is sufficient to update only the Temp_Cell information. There is no need to update the information. Therefore, the trouble of updating at the time of processing can be minimized.

  “Trimming_Start_PTM” is a time code indicating picture data located immediately after the tip vicinity. “Trimming_End_PTM” is a time code indicating picture data located immediately before the end vicinity. The reason why Trimming_Start_PTM and Trimming_End_PTM are provided is to prevent the same content from being reproduced repeatedly when passing through Temp_Cell information. In other words, Cell_End_PTM of CELL information #x specifies the Out point near the end of the duplicate part, and Cell_Start_PTM of CELL information # x + 1 specifies the In point of the duplicate part near the tip. Out point and In point are specified twice by CELL information and Temp_Cell information. In this case, the reproduction from the beginning of the vicinity of the end to the Out point and from the In point to the end of the vicinity of the front end are reproduced twice. Thus, Trimming_End_PTM and Trimming_Start_PTM designate picture data located immediately after the front end portion and picture data located immediately before the end portion. In FIG. 11, Cell_End_PTM of CELL information #x specifies a range of a broken line bs1. On the other hand, Trimming_End_PTM of CELL information #x designates the last picture data of VOBU # (PreEdge) located immediately before the end vicinity as indicated by arrow gy1. Similarly, Cell_Start_PTM of CELL information # x + 1 specifies a range of a broken line bs2. On the other hand, Trimming_Start_PTM of CELL information # x + 1 designates the first picture data of VOBU # (PostEdge) positioned immediately after the vicinity of the tip as indicated by an arrow gy2. By such designation immediately before and after, even when reproduction is performed via Temp_Cell information, duplicate reproduction can be avoided.

  As described above, in the data structure of FIG. 10, when the Temp_Cell information is not passed, the preceding playback section so as to include the end vicinity and the end vicinity shown by the broken lines bs1 and b2 based on Cell_End_PTM and Cell_Start_PTM. And the entire playback of the subsequent playback section is performed. When going to Temp_Cell information, it indicates that the playback from the vicinity of the end of the subsequent playback section to the position near the end of the preceding playback section is performed based on Trimming_End_PTM and Trimming_Start_PTM.

  “Effect_Type” indicates what kind of visual effect is applied to the VOB specified by the Temp_Cell information. The types of visual effects here include seam race connection, fade-in connection, fade-out connection, and cross-fade connection as described above. `` Temp_Cell_FLAG '' is set to `` 0 (off) '' to indicate that it moves directly to the subsequent CELL information without going through Temp_Cell information, and is set to `` 1 (on) '' Indicates that the transition is made to the subsequent CELL information via Temp_Cell information. As a specific case where Temp_Cell_FLAG is set to “0”, if there is not enough free space on the DVD to write the duplicate part (1), the duplicate part can be written and re-encoding etc. There are cases (2) in which the result is poor but the result is not good and the reproduction is not desired. On the contrary, as a specific case where Temp_Cell_FLAG is set to “1”, there is a case where processing for a duplicated part is successful and it is desired to go through Temp_Cell information specifying the duplicated part that has been processed.

  Due to the presence of Temp_Cell_FLAG, it is possible to easily switch whether or not to pass through Temp_Cell information. FIG. 12 is a diagram illustrating an example of setting the CELL information and Temp_Cell information illustrated in FIG. 10 according to the example of FIG. 9. Temp_Cell_SRP of CELL information #x indicates Temp_Cell information #z as indicated by an arrow sy1, and Temp_Cell_SRP of Temp_Cell information #z indicates Temp_Cell information # z + 1 as indicated by an arrow yp1. Trimming_End_PTM of CELL information #x is the picture data located at the end of VOBU # (PreEdge) as indicated by arrow gy1, and Trimming_Start_PTM of CELL information # x + 1 is VOBU # (PostEdge) as indicated by arrow gy2. Each picture data located at the head is shown. Cell_Start_PTM of Temp_Cell information #z indicates the picture data located at the beginning of VOB # z as indicated by arrow cy1, Cell_End_PTM of Temp_Cell information #z indicates the Out point of VOB # z as indicated by arrow cy2, and VOB # z Cell_Start_PTM of +1 indicates the In point of VOB # z + 1 as indicated by arrow Cy4, and Cell_End_PTM of VOB # z + 1 indicates the end of VOB # z + 1 as indicated by arrow cy3. Temp_Cell_FLAG indicates whether playback is performed along the path indicated by arrows sy1, yp1, sy2, or whether playback is performed directly from CELL information #x to CELL information # x + 1 as indicated by arrow ty0.

  As described above, according to this embodiment, after copying the vicinity of the end of the preceding playback section and the vicinity of the tip of the subsequent playback section, the copied portion is written on the DVD for processing. While maintaining the principle, it is possible to apply various processings on the reproduction effect to the duplicated portion. If the editing is successful, set Temp_Cell_FLAG in the CELL information to ON and play back via the duplicated part. If it does so, the reproduction | regeneration area row | line | column designated by play list information will be reproduced | regenerated smoothly without the interruption of reproduction | regeneration, and the user can be immersed in a bag.

Recovering when editing fails is also reliable, increasing the chances of challenging editing techniques such as fade-in, fade-out, and crossfade.
(Second Embodiment) The second embodiment relates to a recording apparatus which performs temporary editing and obtains CELL information and Temp_Cell information having the data structure shown in the first embodiment on a DVD. FIG. 13 is a diagram showing an internal configuration of the recording apparatus. The recording apparatus includes a system control unit 1, a disk drive 2, an MPEG decoder 3, a signal output unit 4, a track buffer 5, and a user interface unit 6, and includes a system control unit. 1 includes an address / time code conversion unit 7 and a playlist writing control unit 8.

  The system control unit 1 receives designation of a point (Play point) to be reproduced from the operator, and if the Play point is designated, which VOBU among the VOBUs included in the VOB includes this Play point, The TMAPI is used to identify which of the plurality of picture data included in this VOBU corresponds to the Play point. The disk drive 2 is instructed to read the specified VOBU, and the MPEG decoder 3 is instructed to display only the picture data designated by the Play point in the read VOBU. When two Play points are specified and they are specified as the start point (In point) and the end point (Out point) of the playback section, playlist information including CELL information for specifying the playback section is displayed. Write to DVD.

The disk drive 2 is a device for loading and accessing a DVD. When reproducing picture data, the VOBU including the picture data is read and input to the MPEG decoder. When the reproduction of picture data is instructed, the MPEG decoder 3 decodes the VOBU read from the DVD by the disk drive 2 to obtain uncompressed picture data.
The signal output unit 4 converts the uncompressed picture data obtained by the decoding of the MPEG decoder 3 into a video signal and outputs it to a television or the like. The track buffer 5 is a buffer for absorbing the speed difference between the VOBU reading speed from the DVD by the disk drive 2 and the picture data decoding speed by the MPEG decoder 3. As long as the buffer does not overflow or underflow, a plurality of picture data can be continuously reproduced.

  The user interface unit 6 receives an operation for specifying the Play point, the In point, and the Out point via the dialog screen. FIG. 14 is a diagram illustrating an example of an interactive screen used for the temporary editing process. As shown in this figure, the dialogue screen is displayed as follows: rail gu1, slide bar gu2, playback window gu3, IN button gu4, OUT button gu5, section identification button gu6, In point In point thumbnail gu7, Out point thumbnail gu8, End button gu9 including. The slide bar gu2 moves on the rail gu1 according to the operation of the user's cursor key. If the position of the slide bar gu2 is determined, the system control unit 1 interprets the position of the slide bar gu2 on the rail gu1 as a Play point. For example, when the VOB is 2 hours and the position of the slide bar gu2 is determined just near the middle on the rail gu1, the time when 1 hour has elapsed from the beginning of the VOB is interpreted as the Play point.

  In the playback window gu3, picture data existing at the Play point is displayed. The IN button gu4 and the OUT button gu5 are buttons for accepting setting operations for the In point and the Out point, and the segment specifying button gu6 is a button for accepting an operation for executing a playback segment specifying process. The In point thumbnail gu7 and the Out point thumbnail gu8 are windows for displaying thumbnails of picture data located at the portions set as the In point and Out point, and the end button gu9 is a button for accepting a temporary editing end operation.

  The address / time code conversion unit 7 specifies the VOBU address in the AV file from the time code. Some time codes specify Play points, In points and Out points in the playback section, and when these are set by the user, the address / time code conversion unit 7 is included in which VOBU, and the VOBU's Which picture data corresponds to a time code is specified with reference to TMAPI. 15 to 17 are diagrams illustrating a process in which the address / time code conversion unit 7 specifies the VOBU address from the time code. Hereinafter, this specific process will be described using the In point as an example. As shown in FIG. 15, when the In point is designated at the relative time Tx from the beginning of the VOB, as shown in FIG. 16, x, y, z satisfying the following expression 1 are obtained, and x, y are Applying to Equation 2, the address of VOBU # i is obtained as shown in FIG. If the VOBU is read from the DVD from the address thus obtained, and the system control unit 1 commands the reproduction of picture data that appears when the time z has elapsed from the reproduction start time of this VOBU, the picture corresponding to the In point Data will be displayed.

(Formula 1) In point time code Tx = 10 seconds x x-TM_ENT # x + 1 TM_DIFF + TM_OFS + (VOBU_PB_TM) x y + z (Formula 2)
VOBU # i address = ADR_OFS + TM_ENT # x + 1 VOBU_ADR + VOBU_SZ × y The playlist writing control unit 8 is a component that writes playlist information to a DVD based on a user's interactive operation. 20 is a program for realizing the processing procedure of the flowchart shown in FIGS. Hereinafter, the processing procedure by the playlist writing control unit 8 will be described with reference to this flowchart. When the recording apparatus is activated, the process proceeds to a loop process of steps S1 to S4. This loop process waits for the slide bar gu2, the IN button gu4, the OUT button gu5, the section specifying button gu6, and the process end button gu9 to be specified. When the slide bar gu2 is designated, the process proceeds from step S1 to step S5 and waits for the movement operation of the slide bar gu2. When the slide bar gu2 is moved, in step S6, the slide bar gu2 is moved according to the move operation. Thereafter, while the movement operation of the slide bar gu2 by the user continues, the slide bar gu2 moves in the left-right direction through steps S5 to S6. If the moving operation on the slide bar gu2 is interrupted, step S5 becomes No and the process proceeds to step S7. A time code is generated based on the relative position of the slide bar gu2 with the left end of the rail gu1 as a base point. Play points. Here, if the cell to be edited is 1.5 hours long, the left end of rail gu1 is considered as 00: 00: 00.00, the right end of rail gu1 is considered as 01: 30: 00.00, and the slide bar gu2 on this rail gu1 The position is expressed in hours, minutes and seconds. Here, assuming that the slide bar gu2 exists at the intermediate position of the rail gu1, 00: 45: 00.00 is the Play point.

  Thereafter, the picture data specified by the time code is displayed on the playback window gu3. As a result, an arbitrary Play point in the playback section is designated by the moving operation of the slide bar gu2. Thereafter, the process proceeds to a loop process including steps S1 to S4. If the desired play point is not designated in the move operation for the slide bar gu2, the user designates the slide bar gu2 again in step S1, and the play operation is performed again in steps S5 to S6 by performing the move operation again. Make fine adjustments to the position.

  It is assumed that the Play point desired by the operator is specified through fine adjustment and the IN button gu4 is pressed. In this case, in step S8, the Play point is designated as the In point, and in step S9, a ▽ mark is displayed at the position designated as the In point on the rail gu1. In step S10, the time code indicating the In point is displayed in the notation of hours: minutes: seconds, and in step S11, the thumbnail of the picture data at the In point is displayed in the In point thumbnail gu7. Through the above process, the In point is set. After the In point is set, the slide bar gu2 is specified, the operation to move the slide bar gu2 is performed again, and if the OUT setting button is specified, the Out point is set through the same procedure as the In point. Is done.

  If the In point and Out point are set through the above process, the playback section is determined. Thereafter, the process proceeds to the loop process of steps S1 to S4, and the section specifying button gu6 is designated. If the section specifying button gu6 is designated, Step S3 becomes Yes and the process proceeds to Step S12. In step S12, cell information is generated in which the target VOB is designated as VOBI_SRP, the In point is designated as Cell_Start_PTM, and the Out point is designated as Cell_End_PTM. It is assumed that the above processing of FIG. 18 is repeated and n pieces of CELL information are generated. Thereafter, if the process end button gu9 is pressed, the process of FIG. 18 is terminated and the process proceeds to the flowchart of FIG.

  The flowchart of FIG. 19 has a loop structure in which the processes of steps S13 to S33 are repeated for CELL information # 1 to # n-1 (steps S34 and S35). In this flowchart, CELL information to be processed is set as CELL information #x, and CELL information subsequent to this is set as CELL information # x + 1 in the playlist information. In step S13, VOBU # (Out) including picture data that is the Out point of the playback section #x is specified, and VOBU # (In) including picture data that is the In point of the playback section # x + 1 is specified. After the designation of the visual effect type is accepted in step S14, the vicinity of the end of the playback section #x based on VOBU # (Out) is specified in accordance with the visual effect type in step S15, and VOBU # ( The vicinity of the tip of the playback section # x + 1 with reference to In) is specified. The reason for specifying the vicinity of the end and the vicinity of the tip based on the type of the visual effect is that the portion to be processed may be different for each aspect of the visual effect. When visual effects such as fade-in connection, fade-out connection, and cross-fade connection are applied, it is desirable to let the user specify the processing range by interactive operation rather than automatically setting the processing range. If the end vicinity portion and the tip vicinity portion are specified, it is determined in step S17 whether or not the size obtained by adding the tip vicinity portion and the end vicinity portion exceeds a predetermined size of the DVD. This is because the temporary editing according to the present embodiment is accompanied by recording of a duplicated portion, so that when the free space of the DVD is small, the DVD is prevented from becoming full. As a standard for determining the predetermined size, for example, a value obtained by subtracting a data size of 5 to 10 VOBU from an empty area of a DVD is desirable. When step S17 is determined to be Yes, Temp_Cell_FLAG of Cell information # 1 to #n is set to “0” in step S18, and the processing of this flowchart is ended.

  If it is determined No in step S17, in step S19, the vicinity of the end of the playback section #x and the vicinity of the top of the playback section # x + 1 are duplicated, and the duplicated portions are VOB # z, # z + 1. As a DVD. Thereafter, in step S20, VOB information #z, # z + 1 and Temp_Cell information #z, # z + 1 are generated and written to the DVD. The state after the processing of step S20 is FIG. 9 shown in the first embodiment.

  In step S21 to step S24, setting for CELL information is performed. In step S21, Trimming_End_PTM that specifies picture data one video frame before the end portion is set in Cell information #x. In step S22, Trimming_Start_PTM that specifies picture data one video frame after the front end portion is set to Cell information. Set to # x + 1. Through these steps, the last picture data of VOBU # (PreEdge) is designated by Trimming_End_PTM as shown by arrow gy1 in FIG. 11, and the first picture data of VOBU # (PostEdge) is designated as shown by arrow gy2. It is specified by Trimming_Start_PTM. In step S23, Temp_Cell_FLAG of Cell information #x is set to “1”. In step S24, Temp_Cell information #z is designated by Temp_Cell_SRP of CELL information #x. Thereby, a link as shown by an arrow sy1 in FIG. 11 is formed. Through the above processing, the CELL information shown in FIG. 9 is obtained on the DVD.

  In subsequent steps S25 to S29, processing is performed on Temp_Cell information #z. That is, in step S25, VOBI_SRPN of Temp_Cell information #z is set to VOB # z, and in step S26, Cell_Start_PTM of Temp_Cell information #z is set to the first picture data of VOB # z. In step S27, the Out point of the playback section #x is set in Cell_End_PTM of Temp_Cell information #z. Accordingly, a reference relationship from Temp_Cell information #z to VOB # z is established as indicated by arrows cy1 and cy2 in FIG. In step S28, Temp_Cell information # z + 1 is specified in Temp_Cell_SRP of Temp_Cell information #z. As a result, a link from Temp_Cell information #z to Temp_Cell information # z + 1 as shown by an arrow yp1 is established. Thereafter, in Step S29, the Effect_Type of Temp_Cell information #z is set.

  In subsequent step S30 to step S33, processing for Temp_Cell information # z + 1 is performed. In step S30, VOB # z + 1 is set in VOBI_SRPN of Temp_Cell information # z + 1. In step S31, the In_point of playback section # x + 1 is set in Cell_Start_PTM of Temp_Cell information # z + 1. In step S32, Temp_Cell The end of VOB # z + 1 is set in Cell_End_PTM of information # z + 1. Accordingly, a reference relationship from Temp_Cell information # z + 1 to VOB # z + 1 is established as indicated by arrows cy3 and cy4 in FIG. Thereafter, Effect_Type of Temp_Cell information #z is set in step S33.

As described above, according to the present embodiment, the DVD described in the first embodiment can be obtained in a user-friendly operating environment via an interactive screen, and therefore the opportunity to use the DVD described in the first embodiment. Can be increased.
(Third Embodiment) The third embodiment relates to a playback apparatus for a DVD in which CELL information and Temp_Cell information are recorded in the data structure shown in the first embodiment. FIG. 20 is a diagram illustrating an internal configuration of a playback apparatus according to the third embodiment. As shown in the figure, the playback apparatus according to the third embodiment is based on the internal configuration of the recording apparatus shown in the second embodiment, and common components are denoted by common reference numerals. Description is omitted. The difference is that a playlist reproduction control unit 9 is added in the system control unit 1.

  Further, the MPEG decoder 3 in the third embodiment performs a trimming process so as to perform reproduction based on playlist information. Trimming processing is the specification of the In and Out points of the playback section, which is received from the playlist playback control unit 9, and among the output images, only uncompressed picture data belonging to the range from the In point to the Out point This is a reproduction range restriction operation in which non-compressed picture data is not output for images belonging to outside the range.

  The playlist playback control unit 9 newly added in the third embodiment is a component that controls playback based on playlist information recorded on the optical disc, and its substance is the flow shown in FIGS. 21 and 22. This is a program for realizing the chart processing procedure. A processing procedure of the playlist reproduction control unit 9 will be described with reference to the flowcharts of FIGS. In this flowchart, in step S40, PLI including CELL information # 1 to #n and Temp_Cell information # 1 to #m is read from the DVD and held in the apparatus. Thereafter, the processing from step S41 to step S61 is repeated for CELL information # 1 to # n-1 (steps S62 and S63). In this repetitive processing, CELL information to be processed is CELL information #x, and subsequent CELL information is CELL information # x + 1. Step S41 is a step for determining whether or not Temp_Cell_FLAG in CELL information #x is “0”. If it is “0”, playback section # is determined based on VOBI_SRPN and Cell_Start_PTM in CELL information #x in step S42. VOBU # (In) including the In point is specified in x, and in step S43, VOBU # (Out) including the Out point in the playback section #x is specified based on VOBI_SRPN and Cell_End_PTM of the CELL information #x.

  In step S44, VOBU # (In) to VOBU # (Out) are read out and input to the MPEG decoder 3. In step S45, the MPEG decoder 3 is instructed to perform trimming processing from the In point to the Out point of the output image. FIG. 23 is a diagram showing the read range specified in step S44 and the reproduction range specified in step S45. In the figure, the readout range ym1 specifies up to the end of the vicinity of the end, whereas the reproduction range ym2 specifies up to the Out point in the readout range ym1. Similarly, the readout range ym3 in this figure designates readout from the beginning of the vicinity of the tip, while the reproduction range ym4 designates the In point and after in the readout range ym3.

  On the other hand, if it is determined that Temp_Cell_FLAG is “1”, it is determined in step S46 whether or not there is a preceding playback section. If there is no preceding playback section, in step S47, VOBU # (In) including the In point is specified in playback section #x based on VOBI_SRPN and Cell_Start_PTM of CELL information #x. On the other hand, if there is a preceding playback section, in step S48, VOBU # (PostEdge) located immediately after the tip of playback section # x + 1 is specified based on CELL information VOBI_SRPN and Trimming_Start_PTM.

  After the identification, in step S49, the VOBU # (PreEdge) located immediately before the end of the playback section #x is identified based on VOBI_SRPN and Trimming_End_PTM of the CELL information. In step S50, VOBU # (In) or VOBU # (PostEdge) to VOBU # (PreEdge) are read out and input to the MPEG decoder 3. FIG. 24 is a diagram showing the reading range specified in step S50 and the reproduction range specified in step S50. It can be seen that the reading range yt1 and the reproduction range yt2 in this figure specify up to the end of VOBU # (PreEdge).

  Subsequently, in step S51, Temp_Cell information #z specified by Temp_Cell_SRP of CELL information #x is read, and in step S52, VOB information-SRPN of Temp_Cell information #z is used to copy the duplication portion near the end of playback section #x. Identify the corresponding VOB # z. In step S53, Cell_End_PTM of Temp_Cell information #z is set to the Out point. In step S54, VOB # z is read and input to the MPEG decoder 3. After the input, in step S55, a trimming instruction from the top picture data of VOB # z to the picture data specified at the Out point is performed. In FIG. 24, the arrow yp1 indicates the reading range specified in step S54, and the arrow yp2 indicates the reproduction range specified in step S55. The read range yp1 specifies the entire VOB # z, while the playback range yp2 specifies up to the Out point in the read range yp1. As a result, the image output is limited to the Out point of the CELL information.

  In step S56, it is determined whether or not there is designation by Temp_Cell_SRP of Temp_Cell information #z. If it exists, the Temp_Cell information # z + 1 specified by the Temp_Cell_SRP of the Temp_Cell information #z is read in Step S57, and the VOBI_SRPN of the Temp_Cell information # z + 1 is read in Step S58. VOB # z + 1 corresponding to the duplicate part in the vicinity is specified. In step S59, Cell_Start_PTM of Temp_Cell information # z + 1 is designated as the In point, and in step S60, VOB # z + 1 is read and input to the MPEG decoder 3. In step S61, a trimming instruction from the picture data specified at the In point to the end of VOB # z + 1 in the output image is performed. An arrow hp1 in FIG. 20 indicates the reading range specified in step S60, and an arrow hp2 indicates the reproduction range specified in step S61. The read range hp1 specifies the entire VOB # z + 1, while the playback range hp2 specifies from the In point to the end of the read range hp1. As a result, the image output is limited to the point after the In point in the subsequent playback section.

As described above, according to the present embodiment, it is possible to increase the opportunities for using the DVD shown in the first embodiment by causing an existing playback device to perform playback according to Temp_Cell_FLAG in Cell information.
(Fourth Embodiment) The fourth embodiment relates to a recording apparatus for realizing nonlinear editing for moving image data using a hard disk (HD) array. FIG. 25 is a diagram illustrating an internal configuration of the recording apparatus according to the fourth embodiment. The recording apparatus shown in this figure is based on the internal configuration of the playback apparatus shown in FIG. 20, and common components are denoted by common reference numerals and description thereof is omitted. Compared with FIG. 20, the recording apparatus shown in FIG. 25 is new in that the HD array 10 (including the end storage unit 11, the front end storage unit 12, and the editing result storage unit 13), the semiconductor memory 15 (the end side frame memory 16). (1), the playlist writing control unit 8 is added to the playlist writing control unit 14. It has been replaced (2).

  The HD array 10 is a disk device that can be accessed at a higher speed than a DVD, and includes a terminal storage unit 11, a tip storage unit 12, and an editing result storage unit 13. The vicinity of the front end and the vicinity of the end are stored in the HD array 10 because non-linear editing requires high-speed data transfer such as a quadruple speed of a normal hard disk. The playlist write control unit 14 is a constituent element based on the playlist write control unit 8 shown in the first embodiment, but the operation after the end vicinity and the tip vicinity are specified is a playlist document. Different from the control unit 8. In other words, when the end vicinity and the front end vicinity are specified by the processing of steps S15 to S16 in FIG. 19, the picture data constituting the end vicinity and the front end vicinity is read out and decoded by the MPEG decoder 3. When the picture data constituting the end vicinity portion and the front end vicinity portion is converted into uncompressed picture data, the uncompressed picture data forming the end vicinity portion is written to the end storage portion 11 in the HD array 10, and the front end vicinity portion is written. The uncompressed picture data making up is written into the leading edge storage unit 12. With the above processing, the picture data constituting VOB # z and VOB # z + 1 are stored in the HD array 10 in an uncompressed state.

  The semiconductor memory 15 includes a terminal frame memory 16, a tip frame memory 17, and an editing result frame memory 18. In the end side frame memory 16, one frame of picture data out of the uncompressed picture data constituting the end vicinity part stored in the end storage unit 11 is stored in the front end frame memory 17. Of the uncompressed picture data constituting the stored vicinity of the front end, one frame of picture data is expanded. The editing result frame memory 18 stores uncompressed picture data obtained by performing image processing on the uncompressed picture data stored in the frame memory.

  The non-linear editing unit 19 is an application program that performs various moving image processes based on user operations. The moving image processing by the nonlinear editing unit 19 is to individually perform image processing on each of a plurality of uncompressed picture data stored in the end vicinity storage unit 11 and the front end storage unit 12. Specifically, the non-linear editing unit 19 terminates each of a plurality of uncompressed picture data stored in the end vicinity storage unit 11 and a plurality of uncompressed picture data stored in the front end storage unit 12. The data is read out to the side frame memory 16 or the front end side frame memory 17, and pixel data constituting one image is developed in these frame memories. Pixel calculation is performed on the pixel data stored in these frame memories, and the result of the pixel calculation is obtained in the editing result frame memory 18. When image processing for one piece of picture data is completed, the picture data stored in the editing result frame memory 18 is stored in the editing result storage unit 13. The above processing is repeated for each of the uncompressed picture data stored in the end vicinity storage unit 11 and the plurality of uncompressed picture data stored in the front end storage unit 12. Since the calculation at the pixel level is premised, the non-linear editing unit 19 can perform higher-level image processing than the various types of processing shown in the first embodiment. To list specific examples, the image processing by the nonlinear editing unit 19 includes filtering processing for individual picture data, layer synthesis processing for a plurality of picture data, and the like. The filtering process is a process for performing image operations such as embossing, contour extraction, mosaicing, and the like by performing pixel operations on the pixels constituting the picture data. The layer composition process is a process of assigning picture data constituting the end vicinity part and picture data constituting the tip vicinity part to different layers and creating a composite image obtained by superimposing these layers. The non-linear editing unit 19 may be provided in the system control unit 1.

The MPEG encoder 20 encodes the uncompressed picture data written in the editing result storage unit 13 to obtain VOB # z and # z + 1 and outputs them to the track buffer 5. The picture data output to the track buffer 5 is written to the DVD in association with the VOB information and Temp_Cell information based on the control of the playlist write control unit 14 described above.
As described above, according to the present embodiment, the final editing result is written on the DVD while using the HD array for moving image processing that requires high-speed access, thereby realizing advanced image editing. can do. Since the editing result is specified by Temp_Cell information as in the first embodiment, editing recovery can be easily performed by switching the setting value of Temp_Cell_FLAG as in the first embodiment.

  (Fifth Embodiment) The fifth embodiment relates to a reproducing apparatus provided with a hard disk array. FIG. 26 is a diagram illustrating an internal configuration of a playback apparatus according to the fifth embodiment. The playback device shown in FIG. 26 is based on the configuration of the recording device shown in FIG. 25, and the same reference numerals are assigned to the same components as those in FIG. The difference from the internal configuration shown in FIG. 25 is that a Temp_Cell information prefetch control unit 21 and a playlist reproduction control unit 23 are provided in the system control unit 1, and the nonlinear editing unit 19 is replaced with a nonlinear editing unit 22. It is.

  The Temp_Cell information prefetch control unit 21 performs prefetch processing when reproduction based on Playlist information is designated. This pre-reading process reads VOB # z and # z + 1 specified by Temp_Cell information prior to CELL information and outputs to MPEG decoder 3 when playback of a playback section based on Playlist information is specified. It is to do. When the MPEG decoder 3 performs decoding on the read VOB # z and # z + 1 and uncompressed picture data is obtained, the uncompressed picture data included in VOB # z is stored in the end storage unit 11. The uncompressed picture data included in VOB # z + 1 is stored in the leading edge storage unit 12.

  The non-linear editing unit 22 stores the uncompressed picture data stored in the end storage unit 11 and the front end storage unit 12 in the end side frame memory 16, the front end without waiting for an operation from the user during the VOB prefetching process described above. It reads out to the side frame memory 17 and executes moving image editing according to Effect_Type included in Temp_Cell information. Here, if the Effect_Type included in the Temp_Cell information indicates fade-out, fade-out processing is applied to the uncompressed picture data constituting the VOB # z and VOB # z + 1, and the Effect_Type indicates filtering or layer synthesis. Then, fade-out processing is applied to uncompressed picture data constituting VOB # z and VOB # z + 1. Each time an editing result of one frame is obtained in the editing result frame memory 18, it is stored in the editing result storage unit 13. When the above processing is completed, the end of processing is notified to the playlist reproduction control unit 23.

  The playlist reproduction control unit 23 performs processing unique to the fifth embodiment while being based on the function of the playlist reproduction control unit 9 shown in the third embodiment. In the third embodiment, the playlist playback control unit 9 inputs up to VOBU # (PreEdge) of the preceding playback section in the MPEG decoder in step S50 of FIG. 22, and then VOB # z specified by VOBI_SRP of Temp_Cell information. , VOB # z and # z + 1 specified by VOBI_SRP of # z + 1 are input to the MPEG decoder 3. On the other hand, the playlist reproduction control unit 23 in the fifth embodiment edits the editing result obtained when the nonlinear editing unit 22 performs editing instead of VOB # z and # z + 1 recorded on the DVD. Read from the result storage unit 13 and input to the signal output unit 4.

  The editing result stored in the editing result storage unit 13 is obtained by the non-linear editing unit 22 performing editing in accordance with the Effect_Type of Temp_Cell information. Since VOB # z and # z + 1 are replaced with these editing results, various visual effects were applied to the vicinity of the end of the preceding playback section and the vicinity of the front end of the subsequent playback section when the playlist information was played back. It is replaced with picture data.

As described above, according to the present embodiment, VOB # z and # z + 1 specified by Temp_Cell information are pre-read and edited when playlist information is played back. You can play it immediately.
(Sixth Embodiment) The sixth embodiment relates to a high-performance playback apparatus that includes two MPEG decoders and can decode two VOBs. FIG. 27 is a diagram illustrating an internal configuration according to the sixth embodiment. The configuration of the recording apparatus in this figure is based on the configuration of the reproducing apparatus shown in FIG. 26, and common components are given the same reference numerals and description thereof is omitted. The new point is that the MPEG decoder 3 shown in FIG. 26 is replaced with the MPEG decoder 24 and the MPEG decoder 25, and the non-linear editing unit 22 is replaced with the non-linear editing unit 26.

  Of the two MPEG decoders, one MPEG decoder 24 performs decoding from Cell_Start_PTM or Trimming_Start_PTM to Trimming_End_PTM in the playback section specified by the CELL information. The other MPEG decoder 25 decodes the playback section specified by the Temp_Cell information to obtain uncompressed picture data, and writes it to the end storage unit 11 and the front end storage unit 12.

  The non-linear editing unit 26 sequentially reads the uncompressed picture data written in the end storage unit 11 and the front end storage unit 12 into the end side frame memory 16 and the front end side frame memory 17, and performs processing according to the Effect_Type on this. The processing result is obtained in the editing result frame memory 18. Each time processing on one piece of uncompressed picture data is completed, the processing result is written into the editing result storage unit 13.

  The MPEG decoder 25 and the nonlinear editing unit 26 perform the above processing until the decoding by the MPEG decoder 24 is completed. When the VOB decoding by the MPEG decoder 24 is completed, the signal output unit 4 reproduces and outputs the uncompressed picture data stored in the editing result storage unit 13. As described above, according to the present embodiment, decoding from Cell_Start_PTM or Trimming_Start_PTM to Trimming_End_PTM in the playback section, decoding of the playback section specified by Temp_Cell information, and video editing are performed in parallel. If is set, the user can enjoy visual effects such as fade-in connection, fade-out connection, and crossfade connection without being conscious of the processing for the VOB.

(Seventh Embodiment) Visual effects such as wiping and sliding are added to Effect_Type in Temp_Cell information. 28 (a) to 28 (c) are diagrams showing how the wiping process is performed, and FIGS. 29 (a) to 29 (c) are how the sliding process is performed. FIG.
In the wipe process, as shown in FIG. 28A, the image A included in the end of the preceding playback section is superimposed on the image B included in the vicinity of the leading end of the subsequent playback section, and the image A on the end side is overlapped. Is moved in either direction on the screen as indicated by arrows wy1 and wy2 in FIGS. 28 (b) and 28 (c), so that the image in the vicinity of the tip that is hidden by the image A on the end side is hidden. This is the visual effect of displaying B on screen C.

  In the slide processing, as shown in FIG. 29 (a), the image A included in the vicinity of the end of the preceding playback section and the image included in the vicinity of the end of the subsequent playback section are adjacent to each other. This is a visual effect in which the image near the tip is displayed on the screen while moving the image near the tip so as to push out the image A on the end side as indicated by arrows wy3, 4. The recording apparatus according to the seventh embodiment writes Effect_Type indicating these wipe processing and slide processing in Temp_Cell information.

  On the other hand, FIG. 30 shows an internal configuration of a playback apparatus according to the seventh embodiment. As shown in FIG. 30, this playback apparatus basically has the same configuration as the playback apparatus according to the fifth embodiment shown in FIG. In the seventh embodiment, the MPEG decoder 3 converts the picture data in the vicinity of the end and the picture data in the vicinity of the front end into uncompressed picture data in accordance with Temp_Cell information.

  The non-linear editing unit 19 performs wipe processing or slide processing according to Effect_Type on the uncompressed picture data stored in the end storage unit 11 and the front end storage unit 12 and causes the signal output unit 4 to display and output the result. . As described above, according to the present embodiment, when recording Temp_Cell information, visual effects such as wipe processing and slide processing can be set, and variations in moving image editing can be increased.

  (Eighth Embodiment) In the first to seventh embodiments, the duplicate parts are written on the DVD as VOB # z, # z + 1. If the continuous lengths of VOB # z and # z + 1 are short, VOB # z + 1 is read and VOB # z + 1 is read and VOB # z + 1 is read. There is a possibility that the track buffer 5 will underflow before reading. That is, if the continuous length is short, even if the processing from the first embodiment to the seventh embodiment is performed, the reproduction is interrupted due to the underflow of the track buffer 5. In order to avoid this, the recording apparatus according to the second embodiment performs so-called merge processing. The merge process is a process of connecting VOB # z and VOB # z + 1 so that the data length of the connected part exceeds a predetermined data length.

Here, the DVD recording area is divided into a plurality of sectors of 2048 bytes, further divided into a plurality of ECC blocks consisting of 16 consecutive sectors, and the VOB is composed of a plurality of packs having a size of 2048 bytes. The predetermined data length is a size corresponding to the number of Ecc blocks N_ecc expressed by the following equation.
N_ecc = Vo * Tj / ((16 * 8 * 2048) * (1-Vo / Vr)) where Tj is the maximum jump time of the optical pickup in the playback device, Vr is the input transfer rate (Mbps) of the track buffer, Vo indicates the output transfer rate (Mbps) of the track buffer.

  For details of the basis of this equation, see the aforementioned US Pat. No. 6,148,140. Further, the recording device may determine the duplication portion so as to satisfy such a continuous length when the duplication portion is written. As described above, according to the present embodiment, in duplication, the duplication portion is determined to have a data length such that the track buffer does not underflow, so that it is possible to avoid interruption of reproduction due to underflow.

  Ninth Embodiment The ninth embodiment relates to a recording apparatus that performs processing in consideration of the recording capacity of a DVD. In the second embodiment, every time provisional editing is performed, the duplication portion in the vicinity of the end and the vicinity of the end is written on the DVD. Therefore, if the temporary editing is repeated and a lot of CELL information is generated, the capacity of the DVD is subject to pressure, and the probability that the optical disk becomes full will increase. Therefore, in the ninth embodiment, whether or not there is a possibility of processing is presented to the user, and when the user performs an affirmative operation with respect to this presentation, the mode of the recording device is set to the processing mode. . On the other hand, when a negative operation is performed, the non-machining mode is set. The recording apparatus of the ninth embodiment performs the process of the second embodiment only when the own apparatus is set to the machining mode, and does not perform the process of the second embodiment when the apparatus is set to the non-machining mode. As a result, many other VOBs can be written in the capacity of the DVD.

  In addition, when a DVD on which a duplicate portion has already been written is loaded and there is no capacity for writing other VOBs on the DVD, the recording apparatus according to the ninth embodiment secures a free area. If the user wishes to secure a free area, the VOB specified in the Temp_Cell information, the VOB information corresponding to the VOB, and the Temp_Cell information are deleted and the free area is secured.

  As described above, according to the present embodiment, it is possible to avoid the occurrence of a disk full accompanying the recording process of the duplicate portion shown in the second embodiment. Although it has been described based on the above embodiment, it is merely presented as an example of a system that can be expected to have the best effect in the present situation. The present invention can be modified and implemented without departing from the gist thereof. As typical modified embodiments, there are the following (A), (B), (C),...

  (A) In the first to seventh embodiments, the portion to be duplicated is set as the vicinity of the end of the preceding playback section and the vicinity of the tip of the subsequent playback section. A duplicate part of the part may be specified by Temp_Cell information. In the first to seventh embodiments, an example in which two or more playback sections are set for each of VOB # x and # x + 1 has been described. However, two or more playback sections are set for one VOB. A playback section may be set.

  (B) In the first to seventh embodiments, description has been made by taking as an example a DVD that can record moving image data in accordance with the DVD-VIDEO RECORDING standard, such as DVD-RAM, DVD-RW, etc. As long as the data can be recorded on the recording medium, the physical structure may be any recording medium. For example, it may be a phase change optical disc such as PD, DVD + RW, CD-RW, etc. other than DVD-RAM and DVD-RW. Also, write-once optical disks such as CD-R and DVD-R (i), magneto-optical storage optical disks (ii) such as MO (Magneto-optical disk), MD-DAT (Mini disc-Data), iD format, ORB, Jaz, SparQ, SyJet, EZFley, micro drive and other removable hard disk drives (iii), flexible disks, SuperDisk, Zip, Clik! And other magnetic recording disks (iv), SD memory cards, flash cards, smart media, memory It may be a flash memory card (v) such as a stick, a multimedia card, or a PCM-CIA card.

  (C) When the DVD is also used as a computer recording medium, the following configuration may be adopted. That is, the disk drive 2 is connected to the computer bus via a SCSI, IDE, IEEE1394 compliant interface as a DVD drive device. Further, the constituent elements other than the disk drive 2 in the figure are realized by executing the OS and the application program on the hardware of the computer.

(D) In this embodiment, the video stream and the audio stream are multiplexed in the VOB. However, a sub-picture stream obtained by run-length compression of subtitle characters and other control information may be multiplexed.
(E) In the present embodiment, the display period of picture data is described in video frames. However, when 3: 2 pull-down used for compressing a video of 24 frames / second like a film material is used, In some cases, 1.5 frames = 1 picture instead of 1 frame = 1 picture. The present invention does not substantially depend on 3: 2 pull-down, and in this case is not limited to the frame described above.

  (F) In this specification, no description has been made about the device for processing, but this is based on the fact that the recording device and the device for moving image processing are traded as separate devices. In other words, at present, AV files and management files are often written by a DVD recorder, which is one of consumer devices such as Panasonic's DMR-E20. On the other hand, the processing described above is often performed by a personal computer in which an external drive device is connected by an IEEE1394 type connector and a digital video editing program such as “MotionDV STUDIO” or “DVD MovieAlbum” is installed. is there.

  However, the present specification does not exclude the possibility of integration with the processing apparatus, and integrates the above-described processing apparatus with the recording apparatus and playback apparatus described in the second to ninth embodiments. It may be configured. In the second to ninth embodiments, the recording device and the playback device have been described separately as separate embodiments. However, this is for convenience of explanation, and the recording device and the playback device are configured to be integrated. Also good.

(G) In all the embodiments, the optical disc records various data in a format conforming to the DVD-VIDEO RECORDING standard. However, any standard that can record data on the premise of editing conforms to other standards. It may be recorded.
(H) In the fourth to sixth embodiments, the description has been made by taking the hard disk array as an example, but the hard disk array may be replaced by one hard disk.

  (I) In all the embodiments, Temp_Cell_FLAG is used for switching whether or not to pass through the duplicated portion. However, even if switching is made whether or not to pass through the duplicated portion by a user operation without using this Temp_Cell_FLAG. Good.

  The optical disk, the recording apparatus, and the playback apparatus according to the present invention have an internal configuration disclosed in the above embodiment, and are apparently mass-produced based on the internal configuration. Therefore, the optical disc, the recording device, and the playback device according to the present invention have industrial applicability.

It is a figure which shows the directory and file in DVD. (A) It is the figure which detailed the structure of VOB recorded on AV file in steps. (B) It is a figure which shows the internal structure of GOP. It is a figure which shows the internal structure of a management file. It is the figure which drew the relationship between TMAPI and VOBU typically. It is a figure which shows typically how a reproduction area is specified by CELL information #x, # x + 1. (A)-(d) It is a figure for demonstrating each of multiple types of process. (A)-(b) It is a figure which shows how a termination | terminus vicinity part and a front-end | tip vicinity part are set when a processing method is seamless connection. It is a figure which shows the replication part written for data processing. It is a figure which shows DVD in which VOB information #z and # z + 1 and Temp_Cell information #z and # z + 1 were written with VOB # z and # z + 1. It is a figure which shows the data structure of CELL information of the playlist information which concerns on 1st Embodiment. It is a figure which shows typically how a VOB is designated by the CELL information and Temp_Cell information shown in FIG. In FIG. 9, it is a figure which shows which site | part specifies the component of CELL information and Temp_Cell information. It is a figure which shows the internal structure of a recording device. It is a figure which shows an example of the dialogue screen used for temporary edit processing. It is a figure which shows the process in which the address time code conversion part 7 specifies the address of VOBU from a time code. It is a figure which shows the process in which the address time code conversion part 7 specifies the address of VOBU from a time code. It is a figure which shows the process in which the address time code conversion part 7 specifies the address of VOBU from a time code. 7 is a flowchart showing a processing procedure of a playlist writing control unit 8. 7 is a flowchart showing a processing procedure of a playlist writing control unit 8. It is a figure which shows the internal structure of the reproducing | regenerating apparatus concerning 3rd Embodiment. 10 is a flowchart illustrating a processing procedure of a playlist reproduction control unit 9. 10 is a flowchart illustrating a processing procedure of a playlist reproduction control unit 9. It is a figure which shows the read-out range designated by step S44, and the reproduction | regeneration range designated by step S45. It is a figure which shows the read-out range designated by step S50, and the reproduction | regeneration range designated by step S50. It is a figure which shows the internal structure of the recording device which concerns on 4th Embodiment. It is a figure which shows the internal structure of the reproducing | regenerating apparatus which concerns on 5th Embodiment. It is a figure which shows the internal structure of the reproducing | regenerating apparatus which concerns on 6th Embodiment. (A)-(c) It is a figure which shows how a wiping process is performed. (A)-(c) It is a figure which shows how slide processing is performed. It is a figure which shows the internal structure of the reproducing | regenerating apparatus concerning 7th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 System control part 2 Disk drive 3 MPEG decoder 4 Signal output part 5 Track buffer 6 User interface part 7 Time code conversion part 8 Playlist write control part 9 Playlist reproduction control part 10 HD array 11 Termination storage part 12 Tip storage part DESCRIPTION OF SYMBOLS 13 Edit result storage part 14 Playlist write control part 15 Semiconductor memory 16 End side frame memory 17 Front end side frame memory 18 Edit result frame memory 19 Non-linear edit part 20 MPEG encoder 21 System control part 22 Non-linear edit part 23 Playlist reproduction control Section 24 MPEG Decoder 25 MPEG Decoder

Claims (6)

A recording device for an optical disc on which video data is recorded,
Accepting means for accepting an operation for identifying at least two playback sections from the video data from an operator;
Duplicating means for writing on the optical disc a duplicated portion obtained by duplicating the vicinity of the end of the preceding playback section, which is the preceding playback section of the two playback sections, and the vicinity of the leading end of the subsequent playback section, which is the playback section on the subsequent side. When,
Writing means for writing the flag to the optical disc,
The duplicate part is a part to be processed,
The flag is
When set to ON, indicates that the part before the end of the preceding playback section and the part near the end of the subsequent playback section are played back via the duplicate part,
When set to off, indicates that the preceding playback section and the subsequent playback section are sequentially played without going through the duplicate portion,
The moving image data is a compression-encoded picture data sequence,
The processing is processing for realizing a visual effect to show between the compression encoded picture data included in the subsequent reproduction section and the compression coded picture data included in the preceding reproduction section seamlessly,
It said duplicating means duplicates the necessary to the processing of a predetermined number of compressed coded picture data included in the subsequent reproduction section and a predetermined number of compressed coded picture data included in the preceding reproduction section, an optical disk Write on the
A recording apparatus. Video data, at least two playback section information for identifying at least two playback sections from the video data, and a side adjacent to the end of the preceding playback section that is the preceding playback section of the two playback sections A reproduction device for an optical disc on which a duplication portion obtained by duplicating the vicinity of the leading end of a subsequent reproduction section, which is a reproduction section, and a flag,
Reference means for referring to the flag;
When the flag is set to ON, the portion before the end portion in the preceding playback section and the portion after the tip portion of the subsequent playback section are played back via the duplicate portion,
Replay means for sequentially reproducing the preceding reproduction section and the subsequent reproduction section without going through the duplicate portion when the flag is set to OFF,
The duplicate part is a part to be processed,
The moving image data is a compression-encoded picture data sequence,
The processing is processing for realizing a visual effect to show between the compression encoded picture data included in the subsequent reproduction section and the compression coded picture data included in the preceding reproduction section seamlessly,
The reproduction means, when the flag is set to ON, the visual effect to show seamlessly when reproducing the compression-encoded picture data included in the preceding reproduction section and the compression-encoded picture data included in the subsequent reproduction section Realizing
A reproducing apparatus characterized by that. A recording program for causing a computer to perform processing for recording moving image data on an optical disc,
An accepting step for accepting from the operator an operation for identifying at least two playback sections from the video data;
Duplicating the portion near the end of the preceding playback section that is the preceding playback section of the two playback sections and the vicinity of the leading end of the subsequent playback section that is the succeeding playback section, and writing the copied portion to the optical disc Steps,
Causing the computer to perform a process of writing a flag to the optical disc;
The duplicate part is a part to be processed,
The moving image data is a compression-encoded picture data sequence,
The flag is
When set to ON, indicates that the part before the end of the preceding playback section and the part near the end of the subsequent playback section are played back via the duplicate part,
When set to off, indicates that the preceding playback section and the subsequent playback section are sequentially played without going through the duplicate portion,
The processing is processing for realizing a visual effect to show between the compression encoded picture data included in the subsequent reproduction section and the compression coded picture data included in the preceding reproduction section seamlessly,
The replication step, the preceding number of predetermined included in the reproduction section compression encoded picture data, and replicates what the machining of a predetermined number of compressed coded picture data included in the subsequent reproduction section is required, Let the computer do the process of writing to the optical disc,
A recording program characterized by that. Followed by moving picture data, at least two pieces of playing section information for identifying at least two playing sections from the moving picture data, and a vicinity of the end of the preceding playing section that is a preceding playing section of at least two playing sections. A reproduction program for causing a computer to perform a process of reproducing an optical disc on which a duplication portion obtained by duplicating the vicinity of the leading end of a subsequent reproduction section, which is a reproduction section on the side, and a flag,
A reference step for referring to the flag;
When the flag indicates ON, the part before the end of the preceding playback section and the part after the tip of the subsequent playback section are played back via the duplicate part,
When the flag indicates off, the computer performs a playback step of sequentially playing back the preceding playback section and the subsequent playback section without going through the duplicate portion,
The duplicate part is a part to be processed,
The moving image data is a compression-encoded picture data sequence,
The regeneration step, when the flag is set to ON, when said preceding predetermined number of included reproduction section and a predetermined number of compressed coded picture data included in the subsequent reproduction section of the compression encoded picture data reproduced To achieve a seamless visual effect,
A reproduction program characterized by that. A recording method for recording moving image data on an optical disc,
An accepting step for accepting from the operator an operation for identifying at least two playback sections from the video data;
Duplicate the vicinity of the end of the preceding playback section, which is the preceding playback section of the two playback sections, and the vicinity of the leading end of the subsequent playback section, which is the playback section of the succeeding side, and write the duplicated portion to the optical disc. A duplication step;
A writing step of writing a flag to the optical disc,
The duplicate part is a part to be processed,
The moving image data is a compression-encoded picture data sequence,
The flag is
When set to ON, indicates that the part before the end of the preceding playback section and the part near the tip of the subsequent playback section are played back via the duplicate part,
When set to off, indicates that the preceding playback section and the subsequent playback section are sequentially played without going through the duplicate portion,
The processing and is a processing for realizing a visual effect to show between the compression encoded picture data included in the subsequent reproduction section and the compression coded picture data included in the preceding reproduction section seamlessly,
The replication step is to replicate the necessary to the processing of a predetermined number of compressed coded picture data included in the subsequent reproduction section and a predetermined number of compressed coded picture data included in the preceding reproduction section, an optical disk Write on the
And a recording method. Video data, at least two playback section information for identifying at least two playback sections from the video data, and a side adjacent to the end of the preceding playback section that is the preceding playback section of at least two playback sections A reproduction method for reproducing an optical disc on which a duplication portion obtained by duplicating the vicinity of the leading end of a subsequent reproduction section, which is a reproduction section, and a flag,
A reference step for referring to the flag;
When the flag indicates ON, the part before the end of the preceding playback section and the part after the tip of the subsequent playback section are played back via the duplicate part,
When the flag indicates OFF, a playback step of sequentially playing the preceding playback section and the subsequent playback section without going through the duplicate portion, and
The duplicate part is a part to be processed,
The moving image data is a compression-encoded picture data sequence,
The processing is processing for realizing a visual effect to show between the compression encoded picture data included in the subsequent reproduction section and the compression coded picture data included in the preceding reproduction section seamlessly,
The regeneration step, when the flag is set to ON, when said preceding predetermined number of included reproduction section and a predetermined number of compressed coded picture data included in the subsequent reproduction section of the compression encoded picture data reproduced To achieve a seamless visual effect,
A reproduction method characterized by the above.

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