JP2003289509A - Stored contents reproducing apparatus, reproducing method therefor, reproducing program therefor, medium therefor, contents transmitting-receiving system, and specific frame information file - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stored contents reproducing apparatus or the like in which a reproduction mode from a storage part for digital contents is controlled from the side of a contents provider. <P>SOLUTION: The digital contents are provided with a flag presenting whether fast forwarding or the like is permitted or not in its I frame position information. When there is a fast forward request while reading and reproducing the digital contents from the storage part, the I frame position information is checked and whether it is during a forced ordinary reproduction period at present or not is judged. When it is during the forced ordinary reproduction period, the fast forward request is refused and ordinary reproduction is continued. When it becomes the forced ordinary reproduction period during fast forwarding reproduction, the ordinary reproduction is temporarily started. Then, fast forwarding reproduction is started after the end of the forced ordinary reproduction period. Thus, the ordinary reproduction is performed during the forced ordinary reproduction period without fail. It is similar with respect to rewinding and skipping as well. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stored content reproducing apparatus and the like for reading and reproducing transport stream data containing contents accumulated in a storage section. More specifically, the present invention relates to a stored content reproduction apparatus having not only normal reproduction but also various reproduction modes such as fast-forwarding, a reproduction method thereof, a reproduction program and medium thereof, a content transmission / reception system, and a specific frame information file.

[0002]

2. Description of the Related Art Some digital broadcast receiving devices have a storage unit for storing received contents, which are transport stream data. As for the reproduction of the accumulated transport stream data, there is a demand for reproduction in a mode other than the normal reproduction such as fast-forward and rewind, as in the case of reproduction from an analog medium. To enable this, I frames are arranged everywhere in the transport stream data.

By the way, when the contents can be fast-forwarded or skipped in this way, the user wants to skip the CM inserted in the contents for viewing. There is a technology that realizes the CM cut request of the user (see, for example, Patent Document 1).

[0004]

[Patent Document 1] Japanese Patent Laid-Open No. 2000-69414

[0005]

However, as a content provider, there are cases where the content should include a portion that should be viewed in normal reproduction. Such as commercial advertising. However, such a part may not be reproduced normally because it is fast forwarded or skipped. Therefore, the content provider cannot fully expect the effects of commercial advertisement and the like. This also hinders the advertiser's willingness to advertise and hinders the inexpensive provision of digital content.

[0006] The contents also include scenes that children do not want to show, such as so-called parental locks. It is desirable to limit the reproduction of such a scene unless a predetermined operation is performed. It is an object of the present invention to provide a stored content reproduction apparatus and a method thereof, which can control a reproduction mode when a transport stream data is read from a storage unit and reproduced, from a content provider side.

[0007]

In order to solve the above-mentioned problems, the present invention is a stored content reproducing apparatus for reading and reproducing transport stream data containing at least one stored content, the transport stream data A file storage means for storing a specific frame information file describing position information of a specific frame inserted everywhere, and a read position of the transport stream data being reproduced, a predetermined reproduction described in the specific frame information file. Determining means for deciding whether or not it is in the specific reproduction mode period based on whether or not reproduction in the mode is possible, and when the determining means determines that it is in the specific reproduction mode period, reproduction in the specific reproduction mode is performed. The control means for controlling is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments embodying the present invention will be described in detail below with reference to the accompanying drawings.
In the present embodiment, the entire system shown in FIG. 1 transmits digital content from the broadcasting device 100 to the receiving device 200. In the receiving device 200, the received digital content can be viewed immediately or can be stored and viewed later.

The broadcasting device 100 is provided with a storage unit 101, a data management unit 102, and a broadcasting unit 103. The storage unit 101 stores all data relating to the content of broadcast content. Data such as video and audio of the content is stored in the storage unit 101 as transport stream (TS) data. T
Most of the image data in the S data represents only the changed portion from the previous screen. However, I-frames representing a complete image are arranged everywhere at a frequency of several times per second. This is for viewing from the middle of the content, fast-forwarding or rewinding when accumulated. Also, the relative position information is attached to the TS packet in which the TS data is accommodated. The storage unit 101 also stores an I frame information file that describes the relative position of the packet in which the I frame in the TS data is stored. The data management unit 102 is a unit that manages when and in what order various data stored in the storage unit 101 is transmitted. The broadcasting unit 103 multiplexes an I frame information file and the like on a TS including content to be broadcast,
It is a part for sending toward.

The receiving device 200 includes a data receiving section 20.
3, recording control unit 204, reception information management unit 205, reception information storage unit 206, reproduction control unit 207, recording / reproduction unit 20
9, a video storage unit 210, and a display control unit 211 are provided. The data receiving unit 203 is a unit that demodulates the signal transmitted from the broadcasting device 100 to obtain the original data. The recording control unit 204 includes the data receiving unit 20.
This is a part for distributing the data demodulated in 3. That is, since the TS data is stored in the video storage unit 210, it is sent to the recording / playback unit 209. On the other hand, the I-frame information file is sent to the reception information management unit 205 to be stored in the reception information storage unit 206. The reception information management unit 205 is a unit that controls writing and reading of information in the reception information storage unit 206.

The recording / playback unit 209 is a unit for sending to the display control unit 211 the data to be viewed among the various data stored in the video storage unit 210 or the data demodulated by the data receiving unit 203. The recording / reproducing unit 209 also performs decoding when the data is scrambled. Reproduction control unit 2
Reference numeral 07 is a portion for inputting various commands and the like to the recording / playback unit 209 and the display control unit 211 based on an operation signal from the remote controller 202. The display control unit 211 is a unit that outputs a video to the display unit 212 based on signals from the recording / playback unit 209 and the playback control unit 207.

In FIG. 1, the receiving device 200 is a broadcasting device 10.
It is drawn so that the radio wave signal from 0 is received by the antenna 201. However, the present invention is not limited to this, and may be a system in which data is received from the broadcasting device 100 to the receiving device 200 by a cable. When using a radio wave, the radio wave may be a ground wave or a satellite wave. In FIG. 1, the display unit 212 is also drawn outside the receiving device 200. However, the present invention is not limited to this, and the receiving device 200 may have the display unit 212 built therein. Also, with respect to the remote controller 202, an operation portion having a function equivalent to that function may be provided in the receiving device 200 itself.

Next, the structure of data transmitted from the broadcasting device 100 will be described. First, the TS data will be described.
As shown in FIG. 2, the TS data includes many TS packets. That is, in FIG. 2, “PID1
Individual TS packets are shown as (1) ”. Although only the I-frame TS packets are shown in FIG. 2, actually, B-frame and P-frame image TS packets other than the I-frame and audio TS packets are also included. Also, the number of I-frame TS packets is actually larger. In FIG. 2, the horizontal axis is the time axis, and the data on the left side of the figure is the data reproduced at an earlier time. In this embodiment, three programs identified by the packet identifiers "1" to "3", that is, contents, are multiplexed on the TS and transmitted. "PID1" of "PID1 (1)"
The part of indicates which program the I frame data is. The part "(1)" indicates the number of the I frame data of the program from the start of the program.

The video and audio multiplexed files included in the TS data are encoded in the time-stamped partial TS format as shown in FIG. 3 according to the ARIB standard when transmitted by the carousel method. "Transp
In “ort_packet”, PAT data, PMT data, and optionally SIT data, a video stream and an audio stream are transmitted. DDB of encoded file
The division into (Download Data Block) is performed from the beginning according to the size specified in the operation. DII (Down
The TS descriptor with the time stamp shown in FIG. 4 is inserted in load Info Indication).

Of these, "default_video_flag" is a flag indicating whether or not the TS file contains a video stream to be reproduced by default. If the value is "0", it indicates that a video stream to be played back is included by default. In that case, the PI
D is specified by "videoPID". If the value is "1",
Indicates that the video stream to be played by default is not included. “Default_audio_flag” is a flag indicating whether or not the TS file includes an audio stream to be played back by default. The value is "0"
Indicates that the audio stream to be played is included by default. In that case, the PID is "au
dioPID ". If the value is "1", it indicates that the audio stream to be reproduced by default is not included.

[TimestampedTS_PBctrl_info_flag] is
It is a flag indicating whether or not the TS file is associated with reproduction control information in which control information necessary for special reproduction (fast forward, etc.) and cueing is stored. If the value is “0”, it indicates that the reproduction control information is associated. In that case, the URI (Uniform Resource)
Identifier) character string length is indicated by "text_length",
The character string is indicated by "text_ch". As a result, the I frame information file (FIGS. 5 and 6) is designated. In addition,
This I frame information file is also multiplexed in the TS and repeatedly transmitted. If the value is "1", it indicates that the reproduction control information is not associated.

Next, the I frame information file will be described. In the I-frame information file, as shown in FIG. 5, the "video PID" at the beginning specifies which program the data is included in. FIG. 5 shows an example including data of three programs. “1”, “2”, and “3” here correspond to “PID1”, “PID2”, and “PID3” in FIG. 2, respectively. In the "I frame position information" column, position information is recorded corresponding to each I frame data in the TS of FIG. The part such as "00: 00: 00: 000" indicates the time from the beginning of the program when the I frame of each program is normally reproduced. In addition, each data includes a flag indicating whether or not special reproduction such as fast-forwarding is possible.
The portion of "fast-forward: possible" or "fast-forward: impossible" is this flag. Whether or not special reproduction (skip, etc.) other than fast-forward is possible follows this flag. The I-frame information file is
This is for the case where programs are stored in the receiving device 200 and reproduced later. That is, where I in the TS data of FIG.
It indicates whether the frame exists.

The I frame information file has a data structure shown in FIG. The video PID to which the I frame belongs is described in the third to sixth lines. Further, the portion of the eighth line and below is the portion for describing the position information of the I frame. In addition to "start_offset" and "end_offset" which are position information,
back "is included. "Playback" is data corresponding to the flag shown as "fast-forward: enabled" or "fast-forward: disabled" in FIG. That is, it is data that specifies whether or not fast-forwarding or other special reproduction is allowed for the I frame.

Here, 2 assigned to "playback"
The value of the bit flag will be described. For example, "00" is attached to "fast-forwarding: possible" and "01" is attached to "fast-forwarding: not possible" in FIG. Further, skip is also included as a reproduction mode similar to fast-forward. In addition to this, the content provider can set the parental lock period by adding “10”. The parental lock period is skipped unless the parental lock such as predetermined authentication is released at the time of reproduction.

The preview period may be set by adding "11". During this period, the user can play and view the content free of charge.
As for the values of the 2-bit flags assigned to these “playbacks”, the contents corresponding to the reproduction control unit 207 and the recording / reproducing unit 209 of the receiving device 200 are stored in advance.

Next, the handling of the data sent from the broadcasting device 100 in the receiving device 200 will be described. In the receiving device 200, the received signal is descrambled and demodulated by the data receiving unit 203. When the content is viewed as it is in real time, the TS data obtained by demodulation is transferred from the recording control unit 204 to the recording / reproducing unit 209.
Send to. Then, it is output from the display control unit 211 to the display unit 212.

When contents are stored, the handling is different between the TS data and the I frame information file. The TS data is sent from the recording control unit 204 to the recording / playback unit 209, locally encrypted by the recording / playback unit 209, and stored in the video storage unit 210. The I frame information file is sent from the recording control unit 204 to the reception information management unit 205 and stored in the reception information storage unit 206. Received information storage unit 20
File information (see FIG. 7) describing the relationship between the file name of the I frame information file and the file name of the TS data is also recorded in 6.

When playing back the stored content later, the TS data corresponding to the content to be played back is read from the video storage unit 210 by the recording / playback unit 209. The locally encrypted TS data is decrypted and output from the display control unit 211 to the display unit 212. Here, normally, all the video data and audio data included in the TS data of the content are reproduced according to the time stamp. As a result, the same reproduction as when viewing in real time is performed. This is normal reproduction.

Although the scrambling of the TS data is decrypted by the data receiving unit 203 and re-encrypted by the recording / reproducing unit 209, when the content is stored, the data receiving unit 203 does not decrypt the data for recording. Playback unit 20
9 may be stored in the video storage unit 210 as it is. The receiving device 200 can also perform special reproduction of the accumulated content in addition to normal reproduction. Special playback includes fast-forwarding, which plays at a speed faster than normal playback, and rewinding, which plays in the opposite direction to normal playback. In addition to this, there is also a skip in which a point is jumped from the point currently being played back to another point and then played normally. In the case of fast-forwarding, only I frame data is extracted and reproduced from the video data in the TS data. Also in the case of rewinding, only the I frame data is extracted and reproduced. However, the playback order is reversed. That is, the I frame data is reproduced while going back to the past. In both fast forward and rewind, the speed can be adjusted depending on how many I frame data are reproduced. The slowest speed is the speed when reproducing all I frame data. In the case of skipping, the I frame data immediately before or after the time point of the skip destination is first reproduced, and then the normal reproduction is performed. The time to skip to may be forward or backward from the current time.

For these special reproductions, it is necessary to know at which position (time) in the TS data the I frame data exists. I stored in the reception information storage unit 206
The frame information file is used for that purpose. That is, the recording / reproducing unit 20 is used for special reproduction.
9 is a reception information storage unit 2 via the reception information management unit 205.
Access 06. Then, the I frame information file corresponding to the content is read. Then, the above is performed based on the I frame position information described therein. These special reproductions are performed by the user issuing a command from the remote controller 202. That is, the reproduction control unit 207, which receives the command signal from the remote controller 202, appropriately controls the recording / reproduction unit 209.

Here, the receiving apparatus 200 does not always perform special reproduction as instructed by the user. A period during which trick play in the content is not allowed, for example,
During the period when the value of the above-mentioned flag is "01", trick play is not performed even if the user gives an instruction. That is, the reproduction for such a period is always the normal reproduction regardless of the user's operation. Such a period is called a forced normal regeneration period. That is, it depends on the flag "playback" in the I frame information file (FIG. 6). The period from the I frame in which "fast forward: not possible" is specified by this flag to the I frame in which "fast forward: possible" is specified next is the forced normal reproduction period. Generally, a forced normal regeneration period is set for a set period of several tens of seconds to several minutes. For example, regarding the content of “PID1” in FIG. 5, the period from time ta1 to time tb1 is the forced normal reproduction period. “Fast-forward: Impossible” is specified for all I-frames arranged between them.
It should be noted that it is not necessary to describe "fast forward: not possible" in all I frames, but do not describe "fast forward: possible".

The control flow of special reproduction in the receiving apparatus 200 will be described with reference to the flowcharts of FIGS. In the following description, the types of special reproduction are assumed to be only three types: fast forward, rewind, and skip. Also,
When any special reproduction is requested, a new special reproduction request will not be accepted until the processing is completed.

First, the normal reproduction process (FIG. 8) will be described. In the normal reproduction processing, first, the T of the content to be reproduced is
S is read from the video storage unit 210 (S1). As a result, the recording / playback unit 209 obtains video data and audio data having a time stamp corresponding to the current playback time. Then, if it is necessary to decrypt, it decrypts. Then, the data is transferred to the display control unit 211 (S
2). As a result, video and audio are reproduced on the display unit 212. Next, it is determined whether or not the reproduction control unit 207 has received a skip request by a user operation (S).
3). If no skip request is received (S3: N
o), it is determined whether a fast-forward request or a rewind request is received (S4). If neither the fast-forward request nor the rewind request has been received (S4: No), the process returns to S1.
Then, the processing is performed on the video data and audio data having the subsequent time stamps. Thus, the processes of S1 and S2 are repeated until the user requests some special reproduction. As a result, the contents
It will be played back at the same speed as for real-time viewing.

When the user makes a skip request, Y is returned in S3.
Judged as es. As a result, the processing shifts to the skip processing of FIG. When the user makes a fast-forward request or a rewind request, it is determined as Yes in S4. In this case, instead of suddenly moving to fast forward / rewind processing, first,
Read the I frame position information of the reception information storage unit 206 (S
5). This is to determine whether or not the current reproduction time is within the forced normal reproduction period (indicated as "NG period" in the figure) (S6). Specifically, this determination is based on the setting of the flag "playback" of the I frame reproduced immediately before.
If this is set to "Fast-forward: Impossible", it is determined that the forced normal reproduction period is in effect. If it is set to "Fast forward: Yes", it is determined that it is not within the forced normal reproduction period. If it is not within the forced normal reproduction period (S6: No), the process proceeds to the fast-forward / rewind process of FIG. If it is within the forced normal reproduction period (S6: Yes), the process proceeds to the NG period reproduction process of FIG. 10 instead of the fast-forward / rewind process. The above is the description of the normal reproduction process.

Next, the skip processing (FIG. 9) will be described. When entering the skip processing, first, the reception information storage unit 20
The I frame position information of No. 6 is read (S11). This is to determine whether or not the current reproduction time is within the forced normal reproduction period (S12). If it is within the forced normal reproduction period (S12: Yes), the process proceeds to the NG period reproduction process of FIG. If it is not within the forced normal reproduction period (S12: N
o), it is determined whether or not the forced normal reproduction period is crossed by skipping (S13). In other words, it is determined whether or not the forced normal reproduction period exists between the current reproduction time and the skip destination time. However, in the case of backward skip, the forced normal playback period immediately after the playback is finished is excluded. If the forced normal reproduction period is not crossed (S13: No), skip to the skip destination time point (S14). Then, the process returns to the normal reproduction process of FIG. As a result, normal reproduction is started from the skip destination time point. If the forced normal reproduction period is exceeded in S13, (S
13: Yes), skip to the beginning of the forced normal reproduction period (S15). When spanning multiple forced normal playback periods, skip to the beginning of the closest forced normal playback period in the skip direction from the current time point. And N in FIG.
The process shifts to the G period reproduction process. The above is the description of the skip processing.

Next, the NG period reproduction processing (FIG. 10) will be described. In the NG period reproduction process, first, the TS of the content being reproduced is read from the video storage unit 210 (S2).
1). As a result, necessary video data and audio data are acquired. Then, the data is transferred to the display control unit 211 (S22). At this time, not only I frame but also B data and P frame TS data are acquired and reproduced. Next, the I frame position information is read (S23). This is for determining whether or not the forced normal reproduction period has ended (S24). This determination is based on the setting of the flag "playback" of the I frame reproduced immediately before. If the forced normal reproduction period has not ended (S24: No), the process returns to S21. Then, the processing is performed on the video data and audio data having the subsequent time stamps. Thus, the processing of S21 and S22 is repeated until the forced normal regeneration period ends. That is, the same reproduction as the normal reproduction is performed.

When the forced normal reproduction period ends (S24:
Yes), it is determined whether or not the special reproduction currently being performed is skip processing (S25). If it is skip processing (S25: Yes), it is determined whether the skip destination has been exceeded (S26). This is because the skip destination may be exceeded by performing normal playback during the forced normal playback period. If the skip destination is not exceeded (S2
6: No), and returns to the skip processing of FIG. If it exceeds the skip destination (S26: Yes), the process returns to the normal reproduction process of FIG. This is because the skip purpose has already been achieved. As a result, the normal reproduction is continued after the forced normal reproduction period in which the reproduction is completed.

If the special reproduction currently being performed is not the skip processing at S25 (S25: No), it is determined whether the special reproduction currently being performed is the rewind processing (S27). If it is a rewinding process (S27: Ye
s), skip to the beginning of the forced normal reproduction period after the reproduction is completed (S28). Then, the process returns to the fast-forward / rewind processing of FIG. This causes the rewinding to continue. In S27, if the special reproduction currently being performed is the fast-forward processing, it is determined as "No". In this case, the process directly returns to the fast-forward / rewind process of FIG. This will continue the fast forward from there. The above is the description of the NG period reproduction processing.

Next, the fast forward / rewind processing (FIG. 11) will be described. When entering the fast forward / rewind process,
It is determined whether or not the reproduction control unit 207 has received a normal reproduction request by a user operation (S41). If the normal reproduction request is received (S41: Yes), the process directly returns to the normal reproduction process of FIG. As a result, normal playback is resumed from there.

If no normal reproduction request is received (S4
1: No), the I frame position information is read (S42). This is for determining whether or not the forced normal reproduction period has been reached (S43). This determination is based on the setting of the flag "playback" of the I frame reproduced immediately before. In S43, in the case of fast-forward processing, it is determined as Yes when the start point of the forced normal reproduction period is reached, and in the case of rewind processing, it is determined as Yes when the end point of the forced normal reproduction period is reached. If the forced normal reproduction period has not been reached (S43: No), T
The next I frame in S (forward in fast-forward, backward in rewind, and may not be closest depending on speed setting) is read (S44). Then, the data is transferred to the display control unit 211 (S45). Then, the process is returned to S41. Thus, the fast-forwarding or rewinding process is continued until the normal reproduction request is made by the user or the forced normal reproduction period is reached.

When the forced normal reproduction period is reached, it is determined "Yes" in S43. Then, it is determined whether or not the special reproduction currently performed is the rewinding process (S4).
6). If it is rewinding processing (S46: Ye
s), skip to the start point of the forced normal reproduction period (S)
47). Then, the process proceeds to the NG period reproduction process of FIG. As a result, normal reproduction is started from the beginning of the forced normal reproduction period. In S46, if the special reproduction currently being performed is the fast-forward processing, it is determined as "No".
In this case, the process directly proceeds to the NG period reproduction process of FIG. As a result, normal reproduction is started from the starting point of the forced normal reproduction period. The above is the description of the fast-forward / rewind processing.

Next, the actual operation of the receiving apparatus 200 having the above control flow when the user performs an operation for special reproduction will be described with reference to FIGS. The time axis in these figures is
It indicates the time when the content is normally played, not the real time. That is, it is the time corresponding to the time stamp.

First, a practical example of the fast-forwarding process will be shown. Shown in is an example when there is a fast-forward request during the forced normal playback period. In the example of FIG. 12, the forced normal reproduction period is from time t2 to time t4. When the user makes a reproduction request with the remote controller 202 at time t0, normal reproduction of the program is started. The normal reproduction is performed by repeating S1 to (S4: No) of the normal reproduction processing of FIG. 8 as described above. Then, it is assumed that the user makes a fast-forward request at time t3. Time t3 is a time that has passed time t2 but has not reached time t4. That is, it is during the forced normal regeneration period. Then, it is determined to be Yes in S4, and S6
Is judged as Yes. Therefore, the NG period reproduction process of FIG. 10 is started. After this, S21 to (S24: No) are repeated. That is, fast-forwarding does not start immediately. To the user, it seems as if the fast-forward request was rejected and normal playback continues. Therefore, at this time, an appropriate message may be displayed on the screen of the display unit 212. This is because the user may suspect a malfunction or the like of the remote controller 202.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
Judged as es. Further, (S25: No) → (S2
7: No), and the fast forward / rewind process of FIG. 11 starts. This starts fast-forward playback. The user's fast-forward request can be fulfilled at this point. If the user has requested normal reproduction from time t3 to time t4, it is determined as Yes in S41 immediately after the start of the fast-forward / rewind processing. As a result, the process returns to the normal reproduction process of FIG. 8 and the normal reproduction is continued.

Next, FIG. 13 shows an example in which the forced normal reproduction period is reached during fast-forward reproduction. Also in the example of FIG. 13, the forced normal reproduction period is from time t2 to time t4. When the user makes a fast-forward request at time t1 before time t2, fast-forward reproduction of the program is started. As described above, the fast-forward reproduction is performed in the fast-forward / rewind processing (S41: No) to (S43: No) to S4 in FIG.
This is done by repeating 5 times. Then, at time t2, the forced normal regeneration period is entered. Then, S43
Is judged as Yes. Therefore, after (S46: No), the NG period reproduction process of FIG. 10 is started. After this, S21
(S24: No) is repeated. That is, to the user, it looks as if the fast-forwarding was canceled without permission. Therefore, at this time, an appropriate message may be displayed on the screen of the display unit 212. The user may be surprised.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
Judged as es. Further, (S25: No) → (S2
7: No) and returns to the fast-forward / rewind processing of FIG. This resumes fast-forward playback. At this point, the state requested by the user is restored. Next, an actual example of the rewinding process is shown. FIG. 14 shows an example in which a rewind request is issued during the forced normal reproduction period. 14
Also in the example, the period from time t2 to time t4 is the forced normal reproduction period. When the user makes a reproduction request at time t0, normal reproduction of the program is started. Then, it is assumed that the user makes a fast-forward request at time t3. Time t3 is during the forced normal reproduction period. Then, it is determined Yes in S4 and Yes in S6. Therefore, N in FIG.
The G period reproduction process starts. After this, S21- (S24: N
o) is repeated. That is, rewinding does not start immediately. To the user, it seems as if the rewind request was rejected and normal playback continues. Therefore, at this time, an appropriate message may be displayed on the screen of the display unit 212. The user operates the remote control 20
This is because you may suspect the failure of item 2.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
Judged as es. Further, (S25: No) → (S2
7: Yes), the starting point of the forced normal regeneration period,
That is, the process skips to time t2 (S28). Then, the fast forward / rewind processing shown in FIG. 11 is started. As a result, rewind reproduction is started. The user's rewind request can be fulfilled at this point.

Next, FIG. 15 shows an example of the case where the rewinding reproduction is being performed and the end point of the forced normal reproduction period is reached. Also in the example of FIG. 15, the forced normal reproduction period is from time t2 to time t4. When the user makes a rewinding request at time t5 after time t4, rewinding reproduction of the program is started. As described above, the rewinding reproduction is performed from the fast forward / rewind processing (S41: No) to (S43:
No) to S45 are repeated. Then, at time t4, the end of the forced normal reproduction period has been reached. Then, it is determined Yes in S43.
Therefore, by (S46: Yes), the process is skipped to the starting point of the forced normal reproduction period, that is, time t2 (S4).
7). Then, the NG period reproduction processing of FIG. 10 is started. After this, S21 to (S24: No) are repeated. That is, it looks to the user as if the rewinding was canceled without permission. Therefore, at this time, an appropriate message may be displayed on the screen of the display unit 212.
The user may be surprised.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
Judged as es. Further, (S25: No) → (S2
7: Yes) and skip to the starting point of the forced normal regeneration period, that is, time t2 (S28). And Figure 1
Return to the fast forward / rewind processing of 1. This resumes the rewinding reproduction. At this point, the state requested by the user is restored.

Next, an actual example of the skip processing will be shown. FIG.
Shown in is an example of a case where there is a skip request during the forced normal reproduction period and there is no other forced normal reproduction period between the time and the skip destination time. Also in the example of FIG. 16, the forced normal reproduction period is from time t2 to time t4. When the user makes a reproduction request at time t0, normal reproduction of the program is started. Then, it is assumed that the user makes a skip request at time t3. Time t3 is during the forced normal reproduction period. Then, it is determined to be Yes in S3. Therefore, the skip processing of FIG. 9 is started. However, in S12, Ye
Since it is determined to be s, the NG period reproduction processing of FIG. 10 is entered, and S21 to (S24: No) are repeated. That is, skipping does not start immediately. To the user, it seems as if the skip request was rejected and normal playback continues. So at this time,
An appropriate message may be displayed on the screen of the display unit 212. This is because the user may suspect a malfunction or the like of the remote controller 202.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
Judged as es. Furthermore, (S25: Yes) → (S
26: No), and returns to the skip processing of FIG. Then, it is determined No in S12. In the subsequent S13, it is determined as No. This is because there is no longer any forced normal reproduction period between the current time t4 and the skip destination time t5. Therefore, skip to the skip destination (S1
4), returning to the normal reproduction processing of FIG. As a result, the time t
Normal reproduction is performed from 5.

In the case of backward skip, it becomes as shown in FIG. That is, when the forced normal reproduction period is reproduced, the time t
When the number reaches 4, the skip is performed in the reverse direction and the normal reproduction is performed from the time t1. Here, the determination at S13 when returning to the skip processing of FIG. 9 at time t4 is No, as in the case of forward skip. This is because the forced normal reproduction period immediately after the reproduction is finished is ignored in the determination of S13.

Next, FIG. 18 shows an example in which the skip destination time is within the forced normal reproduction period and there is no other forced normal reproduction period between the request time and the skip destination time. . Also in the example of FIG. 18, the forced normal reproduction period is from time t2 to time t4. When the user makes a skip request at time t1 before time t2, it is determined as Yes in S3 of the normal reproduction process of FIG. 8, and the skip process of FIG. 9 is started.
Then, it is determined No in S12. Then, it is determined Yes in S13. This is because the forced normal reproduction period (t2 to t3) exists between the current time t1 and the skip destination time t3. Therefore, the process skips to time t2 which is the starting point of the forced normal reproduction period (S15). That is,
Instead of skipping to the original skip destination t3, it skips only until a time t2 which is slightly before that. Then, the NG period reproduction process of FIG. 10 is started, and S21 to (S
24: No) is repeated. As a result, the reproduction is started from time t2 which is the starting point of the forced normal reproduction period.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
It is determined to be es, and Yes is determined in S25. Further, it is determined Yes in S26. This is because the original skip destination time t3 has already been exceeded and the purpose of skipping has been achieved. Therefore, the normal reproduction process of FIG. 8 is started, and the normal reproduction is continued.

FIG. 19 shows the case of backward skip. That is, when the user makes a skip request at time t5 after time t4, the skip processing of FIG.
It is determined No in 2. Then, it is determined Yes in S13. This is because the forced normal reproduction period (t3 to t4) exists between the current time t5 and the skip destination time t3. Therefore, the process skips to time t2 which is the starting point of the forced normal reproduction period (S15). That is, instead of skipping to the original skip destination t3, it is additionally skipped until a time t2 slightly before that. And Fig. 1
The NG period reproduction process of 0 is started, and the reproduction is started from time t2 which is the starting point of the forced normal reproduction period.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
It is determined to be es, and Yes is determined in S25. Further, it is determined Yes in S26. This is because at the time of skipping to time t2, the original skip destination time t3 has already been exceeded, and the purpose of skipping has been achieved. Therefore, the normal reproduction process of FIG. 8 is started, and the normal reproduction is continued.

Next, FIG. 20 shows an example in which both the skip-requested time and the skip-destination time are outside the forced normal reproduction period, but during the forced normal reproduction period. Also in the example of FIG. 20, from time t2 to time t
Up to 4 is the forced normal regeneration period. When the user makes a skip request at time t1 before time t2, it is determined as Yes in S3 of the normal reproduction process of FIG. 8, and the skip process of FIG. 9 is started. Then, it is determined No in S12. And
It is determined as Yes in S13. Forced normal reproduction period (t2 to t4) between the current time t1 and the skip destination time t5
Because there exists. Therefore, the process skips to time t2 which is the starting point of the forced normal reproduction period (S15). That is, instead of skipping to the original skip destination t3, only the time t2 is skipped. Then, the NG period reproduction processing of FIG.
4: No) is repeated. As a result, the reproduction is started from the time t2 which is the starting point of the forced normal reproduction period. At this time, an appropriate message may be displayed on the screen of the display unit 212. The user may be surprised because it will skip again later.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
It is determined to be es, and Yes is determined in S25. Further, it is determined No in S26. This is because the time t5, which is the skip destination, has not yet been exceeded. Therefore, the process returns to the skip processing of FIG. Then, it is determined No in S12. Further, it is determined No in S13. This is because there is no forced normal reproduction period between the current time t4 and the skip destination time t5. Therefore, the process skips to the skip destination time t5 (S14). Then, the normal reproduction process of FIG. 8 is started, and the normal reproduction is started from time t5.

When there are a plurality of forced normal reproduction periods between the skip request time t1 and the skip destination time t5, the following occurs. That is, in this case, the skip destination from the time t1 is the starting point of the forced normal reproduction period closest to the skip direction as viewed from the time t1, that is, the forward most forced normal reproduction period. Hereafter, each forced normal reproduction period will be normally reproduced in order from the front.

FIG. 21 shows the case of backward skip. That is, when the user makes a skip request at time t5 after time t4, the skip processing of FIG.
It is determined No in 2. Then, it is determined Yes in S13. This is because the forced normal reproduction period (t2 to t4) exists between the current time t5 and the skip destination time t1. Therefore, the process skips to time t2 which is the starting point of the forced normal reproduction period (S15). That is, instead of skipping to the original skip destination t3, only the time t2 is skipped. Then, the NG period reproduction process of FIG. 10 is entered, and S21 to (S24: No) are repeated. As a result, the reproduction is started from the time t2 which is the starting point of the forced normal reproduction period. At this time, the display unit 2
Appropriate messages may be displayed on the 12 screens. The user may be surprised because it will skip again later.

Then, when time t4 is reached due to the lapse of time, the forced normal reproduction period ends. Then, in S24, Y
It is determined to be es, and Yes is determined in S25. Further, it is determined No in S26. This is because the time t1, which is the skip destination, has not yet been exceeded. Therefore, the process returns to the skip processing of FIG. Then, it is determined No in S12. Further, it is determined No in S13. This is because the forced normal reproduction period immediately after the reproduction is finished is ignored in the determination of S13. Therefore, the process skips to the skip destination time t1 (S14). Then, the normal reproduction process of FIG. 8 is started, and the normal reproduction is started from time t1.

When there are a plurality of forced normal reproduction periods between the skip-requested time t5 and the skip-destination time t1, the process is as follows. That is, in this case, the skip destination from time t5 is the starting point of the forced normal reproduction period closest to the skip direction as seen from time t5, that is, the rearmost forced normal reproduction period. Hereinafter, each forced normal reproduction period will be normally reproduced in order from the rear one.

In each of the above specific examples, the special reproduction request is made by the user during normal reproduction. However, the present invention is not limited to this, and the special reproduction request can be accepted even when the reproduction is suspended. Then, the same thing as each of the above specific examples occurs. Further, in each of the above-described specific examples, the forced normal reproduction period is applied to rewinding and skipping in the head direction of the program, but it may not be applied to rewinding or skipping in the head direction.

As described in detail above, in the present embodiment, when transmitting digital contents from the broadcasting device 100 to the receiving device 200, a forced normal reproduction period is set in the contents. That is, the flag "playback" is included in the I frame position information of the I frame information file.
“00” and “01” are provided. Based on this value, the receiving apparatus 200 is requested to make the reproduction during that period be normal reproduction.

In the receiving device 200, when the received contents are stored and reproduced later, the reproduction is performed according to the flag. That is, when the user requests special reproduction such as fast-forward, first, I
By looking at the frame position information, it is determined whether or not the current time is within the forced normal reproduction period. And if it is outside the forced normal regeneration period, it immediately follows the request,
If it is within the forced normal reproduction period, the normal reproduction is continued. Then, after the forced normal reproduction period ends, the user's request is followed. Also, when the forced normal reproduction period is reached during fast-forwarding or rewinding, the normal reproduction is automatically started. Then, after the forced normal reproduction period ends, the fast forward or rewind is resumed. Further, if the forced normal reproduction period is crossed by skipping, the process is skipped to the start point of the forced normal reproduction period for the time being. Then, after the forced normal reproduction period ends, the original skip destination is skipped.

As described above, in this embodiment, the mode of reproduction in the receiving apparatus 200 can be controlled from the broadcasting apparatus 100 side. As a result, the receiving device 200 capable of performing the reproduction according to the intention of the content providing side, the digital content providing system using the receiving device 200, and the like are realized. Therefore, when a commercial advertisement is included in the digital content, the commercial advertisement portion can be set to the forced normal reproduction period.
In this way, in the receiving apparatus 200, even when the digital content is stored and viewed later, the commercial advertisement portion cannot be fast-forwarded, and the normal reproduction is always performed. Become. Therefore, a high advertising effect can be expected. Furthermore, this can motivate advertisers to motivate their advertisements, which can contribute to the inexpensive popularization of digital contents. However, needless to say, the forced normal reproduction period can be arbitrarily set, not limited to commercial advertisement.

Further, in this embodiment, a flag indicating whether or not it is within the forced normal reproduction period is provided in the I frame position information. The I frame position information is information that is always referred to when performing fast forward, rewind, or skip processing. Therefore, the judgment as to whether or not it is within the forced normal regeneration period does not become a heavy control burden.

The present embodiment is merely an example and does not limit the present invention. Therefore, naturally, the present invention can be variously improved and modified without departing from the gist thereof. For example, in this embodiment, when special reproduction is requested during the forced normal reproduction period, the request is followed after the forced normal reproduction period has elapsed. However, the control is not limited to this, and the special reproduction request during the forced normal reproduction period may be completely ignored. Further, in the present embodiment, when the forced normal reproduction period is reached and the normal reproduction is started by fast forward and rewind, the fast normal and rewind are restored after the forced normal reproduction period has elapsed. However, the present invention is not limited to this, and it is also possible to perform control so that when the normal reproduction is started due to the forced normal reproduction period, fast-forwarding and rewinding are not resumed. Further, in the present embodiment, when the skip destination is changed by straddling the forced normal reproduction period, the remaining skip is performed after the forced normal reproduction period has elapsed. However, the present invention is not limited to this, and it is also possible to perform control so that the remaining skip is not performed when the skip destination is changed.

Further, in the present embodiment, all of the three types of special reproduction of fast forward, rewind and skip are managed by the common flag, but it is also possible to set the prohibition period individually by different flags. . Further, the flag may be provided for one of a plurality of I frame position information instead of being provided for all the I frame position information.
In addition, a serviceman mode for disassembly and repair, etc.
Special reproduction may be performed even during the forced normal reproduction period only in the serviceman mode.

Furthermore, the types of special reproduction are not limited to the above. It may include a case where the special reproduction is slow reproduction.
Further, in the case of slow reproduction or temporary stop, it may be allowed within the forced normal reproduction period. Examples of special reproduction other than the above include sub-screen display reproduction. That is, during the forced normal playback period, the full-screen display is always performed. In that case, it is possible to decide whether or not to allow the child screen display of other channels. Also, parental control and preview control can be realized by applying the present invention. Parental control is possible as follows. That is, the content provider sets a parental lock period for the content. During playback, the part of the parental lock period is always skipped unless the parental lock is released. Preview control is possible as follows. That is, the content provider sets a preview period for the content. During playback, only the preview period is decrypted without charge.

[0066]

As described above, the present invention is a stored content playback apparatus for reading and playing back transport stream data containing at least one stored content, which is inserted everywhere in the transport stream data. A file storage means for storing a specific frame information file in which the positional information of the specified specific frame described is stored, and a read position of the transport stream data being reproduced is reproduced in a predetermined reproduction mode described in the specific frame information file. Determination means for determining whether or not in the specific reproduction mode period, based on the possibility of, and control means for controlling reproduction in the specific reproduction mode when the determination means determines in the specific reproduction mode period It is supposed to be equipped with. With such a configuration, when the specific frame inserted in the transport stream data is read and reproduced, when the specific frame information file does not permit the reproduction in the predetermined reproduction mode, the reproduction is performed in the specific reproduction mode. It will be. Therefore, for example, if the content provider sets fast-forward playback or skip playback as a predetermined playback mode in the specific frame information file with the CM period as a specific playback mode period for normal playback, the user can perform fast-forward playback or skip. Even if playback is requested, normal playback is forcibly performed during the CM period, and the user can view the CM as intended by the content provider. Also, it becomes possible to set the parental lock and the preview period.

Further, the position information described in the specific frame information file corresponds to the relative position information of the transport stream packet containing the transport stream data, and the judging means sets the predetermined reproduction mode. When it finds a specific frame that is not allowed to be played back in, it is determined as the starting point of the specific playback mode period, and when it finds a specific frame that is allowed to be played in a predetermined playback mode, the end point of the specific playback mode period. Then, the control means controls the transport stream data corresponding to the specific reproduction mode period to be reproduced in the specific reproduction mode. With such a configuration, when the TS packet corresponding to the position information of the specific frame for which the predetermined reproduction mode is not permitted is read from the specific frame information file, the specific reproduction mode period is set as the starting point, and then the predetermined reproduction mode is set. When the TS packet corresponding to the position information of the permitted specific frame is read, it can be the end point of the specific reproduction mode period. The specific reproduction mode period can be reproduced in the specific reproduction mode.

The specific frame is an I frame, the predetermined reproduction mode is fast-forward reproduction or skip reproduction, and the specific reproduction mode when reproduction in the predetermined reproduction mode is not normal is It is supposed to be reproduction. With such a configuration, the I frame displayed during the fast-forward reproduction is set as the specific frame. Therefore, according to the description of the I-frame information file, when the fast-forward reproduction or the skip reproduction is rejected, the normal reproduction can be easily performed. is there.

The control means further includes a reproducing means for reading the specific frame information file stored in the file storing means and reproducing the I frame in the transport stream data. While it is determined that all the I-frames, B-frames and P-frames of the transport stream data are controlled to be reproduced by the reproducing means. With such a configuration, when the fast-forward reproduction is rejected, all of the I frame, B frame, and P frame in the transport stream data are reproduced and the normal reproduction is performed.

Further, the reproducing means receives the fast-forward reproduction request from the user and receives the I in the transport stream data.
When the frame is played back and the user's fast-forward playback request is a request before the specific playback mode period, fast-forward playback is performed up to the start point of the specific playback mode period, and fast-forward playback is restarted from the end point of the specific playback mode period. However, when the user's fast-forward reproduction request is during the specific reproduction mode period, the fast-forward reproduction is started from the end point of the specific reproduction mode period. With such a configuration, normal playback can be performed only during the specific playback mode period and fast-forward playback can be performed outside the playback mode period in response to a request for fast-forward playback.

Also, the reproducing means for reading the specific frame information file stored in the file storing means and reproducing the I frame in the transport stream data, and the reproducing position of the transport stream data from the current position to the succeeding position. Further comprising a skip means for skipping, the control means prohibits the skip in the skip means while the determining means determines the specific reproduction mode period, and causes the reproducing means to I frame of the transport stream data, Control is performed so that all B frames and P frames are reproduced. With such a configuration, when skip reproduction is denied, all of the I frame, B frame, and P frame in the transport stream data are reproduced, and normal reproduction is performed.

Further, when the skip means receives the skip request from the user and skips the reproduction position of the transport stream data from the current position to the subsequent position, and the skip request of the user extends over a specific reproduction mode period,
Skip to the starting point of the specific reproduction mode period, restart the skip from the end point of the specific reproduction mode period, and skip from the end point of the specific reproduction mode period when the user's skip request is a request during the specific reproduction mode period. Is about to start. With this configuration,
In response to the skip request, skip reproduction can be performed outside the reproduction mode period.

Further, the specific frame is an I frame, the predetermined reproduction mode is normal reproduction or special reproduction, and the specific reproduction mode when reproduction in the predetermined reproduction mode is denied is predetermined. It is defined as normal playback or special playback when it is certified. With such a configuration, for example, unless the parental lock is released in response to the parental lock, it can be set that the playback is not performed during the specific playback mode period.

Further, the specific frame is an I frame, the predetermined reproduction mode is a preview showing a free viewing period, and the specific reproduction mode when reproduction in the predetermined reproduction mode is permitted is: It is supposed to be free playback during the preview period and billing when the preview period has elapsed. With such a configuration, a free viewing period can be set for a pay program.

Whether or not the predetermined reproduction mode is possible is as follows.
Described by a 2-bit flag, the determination means and the control means correspond to the value of the flag described by the 2-bit and a predetermined reproduction mode and whether reproduction is possible, and the flag value and a specific reproduction mode at that time. It is supposed to know the correspondence with. With such a configuration, the specific reproduction mode period can be easily known by acquiring the value of this flag.

Further, the present invention is a stored content reproducing method for reading and reproducing transport stream data containing at least one stored content,
The read position of the transport stream data being reproduced is based on whether or not reproduction is possible in a predetermined reproduction mode described in a specific frame information file describing position information of specific frames inserted everywhere in the transport stream data. A determination step of determining whether or not it is in the specific reproduction mode period, and a control step of controlling reproduction in the specific reproduction mode when it is determined in the determination step that the specific reproduction mode period is present. I am trying. By such a method, it becomes possible to set the reproduction mode from the content provider.

The present invention is also a stored content reproduction program for reading and reproducing transport stream data containing at least one stored content, wherein the read position of the transport stream data being reproduced is the transport stream. Judgment as to whether or not it is in the specific reproduction mode period based on whether or not reproduction in a specific reproduction mode described in the specific frame information file describing the position information of the specific frame inserted everywhere in the data is determined The computer is caused to perform the functions of the means and the control means for controlling the reproduction in the specific reproduction mode when the determination means determines that the reproduction is in the specific reproduction mode period. By applying such a stored content reproduction program to the stored content reproduction apparatus, it is possible to set a reproduction mode in accordance with the intention of the content provider.

Further, according to the present invention, the recording medium on which the stored content reproduction program is recorded can be applied to the stored content reproduction apparatus, and the reproduction mode can be set from the content provider side. Further, the present invention is a content transmission / reception system comprising a transmission device and a stored content reproduction device, wherein the transmission device is a transport stream containing at least one content, and is specified everywhere in the transport stream data. The stored content reproducing apparatus includes a multiplexing transmission unit that multiplexes and transmits a specific frame information file in which frame position information is described, and a receiving unit that receives the multiplexed transport stream of the specific frame information file. Storage means for storing the received transport stream data and a specific frame information file, and a read position of the transport stream data being reproduced in a predetermined reproduction mode described in the specific frame information file. Based on the availability of Determining means for determining whether or not there playback mode period, when it is determined that a specific playback mode period determination means, and further comprising a control means for controlling so as to reproduce a particular play mode. With such a configuration, the stored content reproduction apparatus can set the reproduction mode according to the intention of the content provider according to the specific frame information received from the transmission apparatus.

Further, the present invention receives and accumulates transport stream data including at least one content, is used when reproducing the accumulated transport stream data, and is not used in real time reproduction. It is a specific frame information file in which position information of each specific frame inserted in various places of data is described, and whether or not reproduction in a predetermined reproduction mode is possible is described corresponding to the specific frame. By allowing such a specific frame information file to be received by the stored content playback device after being multiplexed with the transport stream, the playback mode can be controlled on the content provider side when the transport stream data is played back.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall system according to an embodiment.

FIG. 2 is a conceptual diagram showing the structure of TS data.

FIG. 3 is a structural diagram of TS data with a time stamp.

FIG. 4 is a data structure diagram of DII.

FIG. 5 is a conceptual diagram showing a structure of I frame position information.

FIG. 6 is a data structure diagram of an I frame information file.

FIG. 7 is a diagram showing an example of file information.

FIG. 8 is a flowchart of normal reproduction processing.

FIG. 9 is a flowchart of skip processing.

FIG. 10 is a flowchart of an NG section reproduction process.

FIG. 11 is a flowchart of fast forward / rewind processing.

FIG. 12 is a time chart showing an example (first) of fast-forward processing.

FIG. 13 is a time chart showing an example (second) of fast-forward processing.

FIG. 14 is a time chart showing an example (1) of rewinding processing.

FIG. 15 is a time chart showing an example (No. 2) of the rewinding process.

FIG. 16 is a time chart showing an example (part 1) of skip processing.

FIG. 17 is a time chart showing an example (part 2) of skip processing.

FIG. 18 is a time chart showing an example (part 3) of skip processing.

FIG. 19 is a time chart showing an example (part 4) of skip processing.

FIG. 20 is a time chart showing an example (part 5) of skip processing.

FIG. 21 is a time chart showing an example (part 6) of skip processing.

[Explanation of symbols]

100 broadcasting equipment 200 receiver 205 reception information management unit 206 reception information storage unit 209 Recording / playback unit 210 video storage

Claims (15)

[Claims] 1. A stored content playback apparatus for reading and playing back transport stream data including at least one stored content, wherein position information of a specific frame inserted at various places in the transport stream data is described. The file storage means for storing the specific frame information file and the read position of the transport stream data being reproduced are determined based on whether or not reproduction is possible in a predetermined reproduction mode described in the specific frame information file. The stored content is characterized by comprising: a determining unit that determines whether or not the content is present, and a control unit that controls the playback to be performed in the specific playback mode when the determination unit determines that the playback is in the specific playback mode period. Playback device. 2. The position information described in the specific frame information file corresponds to the relative position information of a transport stream packet containing transport stream data, and the determination means is configured to perform a predetermined reproduction mode. When it finds a specific frame that is not allowed to be played back in, it is determined as the starting point of the specific playback mode period, and when it finds a specific frame that is allowed to be played in a predetermined playback mode, the end point of the specific playback mode period. The stored content reproducing apparatus according to claim 1, wherein the control means controls the transport stream data corresponding to the specific reproduction mode period to be reproduced in the specific reproduction mode. 3. The specific frame is an I frame, the predetermined reproduction mode is fast-forward reproduction or skip reproduction, and the specific reproduction mode when reproduction in the predetermined reproduction mode is denied is The stored content reproducing apparatus according to claim 2, wherein the apparatus is reproducing. 4. A reproduction means for reading the specific frame information file stored in the file storage means and reproducing an I frame in the transport stream data is further provided, wherein the control means is a determination means for the specific reproduction mode period. 4. The stored content reproducing apparatus according to claim 3, wherein the reproducing means is controlled so as to reproduce all of the I frame, B frame and P frame of the transport stream data while it is judged that. 5. The reproducing means reproduces an I frame in the transport stream data in response to a fast-forward reproduction request from the user, and when the fast-forward reproduction request from the user is a request before the specific reproduction mode period, Fast-forward playback is performed up to the start point of the specific playback mode period, and fast-forward playback is restarted from the end point of the specific playback mode period. When the user's fast-forward playback request is a request during the specific playback mode period, the specific playback mode period 5. The stored content reproduction apparatus according to claim 4, wherein the fast-forward reproduction is started from the end point of. 6. Playback means for reading a specific frame information file stored in the file storage means and playing back an I frame in transport stream data, and a playback position of the transport stream data from a current position to a subsequent position. Further comprising a skip means for skipping, wherein the control means prohibits the skip in the skip means while the determination means determines the specific reproduction mode period, and causes the reproduction means to I frame of the transport stream data, 4. The stored content reproduction apparatus according to claim 3, wherein the stored content reproduction apparatus is controlled to reproduce all B frames and P frames. 7. The skip means receives a skip request from a user, skips a reproduction position of transport stream data from a current position to a subsequent position, and when the skip request of the user extends over a specific reproduction mode period, Skip to the starting point of the specific reproduction mode period, restart the skip from the end point of the specific reproduction mode period, and when the user's skip request is a request during the specific reproduction mode period, skip from the end point of the specific reproduction mode period. 7. The stored content reproducing apparatus according to claim 6, which is started. 8. The specific frame is an I frame, the predetermined reproduction mode is normal reproduction or special reproduction, and the specific reproduction mode when reproduction in the predetermined reproduction mode is denied is predetermined. 3. The stored content reproduction apparatus according to claim 2, wherein the reproduction is a normal reproduction or a special reproduction when the certification of is received. 9. The specific frame is an I frame, the predetermined reproduction mode is a preview showing a free viewing period, and the specific reproduction mode when reproduction in the predetermined reproduction mode is allowed is: 2. The stored content reproducing apparatus according to claim 1, wherein the reproduction is free of charge during the preview period and is a charging process when the preview period has elapsed. 10. The permission / prohibition in the predetermined reproduction mode is 2.
It is described by a bit flag, and the judging means and the control means correspond to the value of the flag described by 2 bits, a predetermined reproduction mode and whether reproduction is possible, and the flag value and a specific reproduction mode at that time. 2. The stored content reproduction apparatus according to claim 1, wherein the correspondence of is stored in advance. 11. A stored content reproducing method for reading and reproducing transport stream data including at least one accumulated content, wherein a read position of the transport stream data being reproduced is anywhere in the transport stream data. A determination step of determining whether or not in a specific reproduction mode period, based on whether or not reproduction in a predetermined reproduction mode described in a specific frame information file describing position information of the specific frame inserted in And a control step of controlling the reproduction in the specific reproduction mode when the determination step determines that the reproduction is in the specific reproduction mode period. 12. A stored content playback program for reading and playing back transport stream data including at least one stored content, wherein a read position of the transport stream data being played is anywhere in the transport stream data. Based on whether or not reproduction in a predetermined reproduction mode described in the specific frame information file describing the position information of the specific frame inserted in, a determination means for determining whether or not in a specific reproduction mode period, A stored content reproduction program for causing a computer to exhibit the function of a control means for controlling reproduction in a specific reproduction mode when the determination means determines that the reproduction is in the specific reproduction mode period. 13. A computer-readable recording medium in which the stored content reproduction program according to claim 12 is recorded. 14. A content transmission / reception system comprising a transmission device and a stored content reproduction device, wherein the transmission device inserts into a transport stream containing at least one content, everywhere in the transport stream data. A storage unit for multiplexing and transmitting a specific frame information file describing frame position information, wherein the stored content reproduction device receives the multiplexed transport stream of the specific frame information file; A storage means for storing the received transport stream data and a specific frame information file, and a read position of the transport stream data being reproduced in a predetermined reproduction mode described in the specific frame information file. Based on the availability of A determination means for determining whether or not it is in the specific reproduction mode period, and a control means for controlling the reproduction in the specific reproduction mode when the determination device determines that the specific reproduction mode period is present. Characteristic content transmission / reception system. 15. Everywhere in the transport stream data, which is used when receiving and accumulating the transport stream data including at least one content and reproducing the accumulated transport stream data, and not used in the real time reproduction. A specific frame information file in which position information of each specific frame inserted in is described, and specific frame information characterized in that whether or not reproduction in a predetermined reproduction mode is described corresponds to the specific frame. File.