JP2009272808A - Digital broadcast receiver and digital broadcast reproduction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver for optionally controlling the way of reproduction, such as forcibly making a viewer watch a commercial message, with a single digital broadcast receiver, when reproducing recorded broadcast data. <P>SOLUTION: The digital broadcast receiver is provided with: a receiving means for receiving a digital broadcast; a recording medium for storing broadcast data received by a receiving part in a storage device; and a reproduction control means for reproducing the broadcast data stored in the storage device. The broadcast data include a reproduction control flag and the reproduction control means controls the manner of reproducing the broadcast data, with reference to the reproduction control flag, corresponding to a part which is being reproduced. Thus, when reproducing the videotaped digital broadcast, on the basis of the reproduction control flag corresponding to a part which is being reproduced, the single digital broadcast receiver controls the manner of reproduction optionally. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a digital broadcast reception and playback method.

Conventionally, when broadcasting data is recorded, viewers can view the program without being divided by the CM by deleting or skipping CM (Commercial Message) data included in the broadcast data or by playing the CM first. There is known a broadcast recording apparatus provided for the above (see, for example, Patent Document 1).
JP 2007-214672 A

  By the way, in the conventional broadcast recording apparatus, when the CM data is erased or skipped, the viewer can view the program without being divided by the CM, but the program sponsor will not be able to view the CM. Has the disadvantage of decreasing.

  On the other hand, in the case of the recording / reproducing method described in Patent Document 1, since the CM is forcibly reproduced first, an improvement in the advertising effect can be expected. However, in this method, in addition to the need to newly prepare a dedicated server, the broadcast recording apparatus has a communication function, and it is necessary to acquire broadcast result data indicating the time when the CM is broadcast from the dedicated server. However, it has been pointed out that the recording / reproducing method cannot be realized by a single broadcast recording apparatus.

  The present invention has been made in view of such circumstances, and when reproducing recorded broadcast data, forcibly controlling to reproduce at normal speed without skipping a predetermined corner or the like in a CM or a program. An object of the present invention is to provide a digital broadcast receiving apparatus capable of performing the above.

  In addition, the present invention uses only data included in broadcast data transmitted from a broadcasting station or the like without using a dedicated server or broadcast result data, and can arbitrarily play back the digital broadcast receiver alone. An object of the present invention is to provide a digital broadcast receiving apparatus that can be controlled.

  In order to solve the above problems, a digital broadcast receiving apparatus according to the present invention includes a receiving means for receiving a digital broadcast, a recording means for storing broadcast data received by the receiving section in a storage device, and a broadcast stored in the storage device. Reproduction control means for reproducing data, wherein the broadcast data includes a reproduction control flag, and the reproduction control means controls a method of reproducing the broadcast data with reference to the reproduction control flag corresponding to the location being reproduced. To do. According to this invention, when playing back a recorded digital broadcast, it becomes possible to arbitrarily control the playback method by the digital broadcast receiving apparatus alone based on the playback control flag corresponding to the part being played back. .

  Preferably, the information processing apparatus further includes input means for inputting an instruction from the user, and the reproduction control means responds to the reproduction control flag corresponding to the position being reproduced when the instruction from the user is input by the input means. Then, it is determined whether or not to execute processing based on the input instruction. When the recorded digital broadcast is reproduced, it can be determined whether or not to execute the process based on the input instruction based on the reproduction control flag corresponding to the part being reproduced.

  More preferably, the reproduction control flag is flag information indicating permission or prohibition of fast-forwarding, and the reproduction control means includes reproduction control included in broadcast data being reproduced when the input means receives a fast-forward instruction from the user. When the flag indicates that fast-forwarding is permitted, the broadcast data being played is played back by fast-forwarding, and when the playback control flag indicates that fast-forwarding is prohibited, the instruction from the user accepted at the input unit is invalidated and playback is in progress. Broadcast data is reproduced at normal speed by prohibiting fast-forwarding of the broadcast data. According to this invention, when a fast-forward or skip instruction is input from the user, fast-forward or skip processing can be prohibited. Therefore, by setting the playback control flag on the broadcasting station side or the like, it becomes possible to control the permission or prohibition of fast-forwarding at any part of the broadcast data.

  Preferably, the playback control flag is set to prohibit fast-forwarding at a location corresponding to the CM. According to this invention, if the fast-forward prohibition flag is set in the CM portion on the broadcast station side or the like, the viewer can be prohibited from fast-forwarding or skipping the CM when reproducing the recorded broadcast data. . In this way, the CM portion can be controlled so as to allow reproduction only at the normal speed, so that the viewer can be forced to view the CM.

  More preferably, the reproduction control flag is included in the event information table. According to this invention, it becomes possible to arbitrarily control the playback method such as prohibiting fast-forwarding of CM in a format compliant with the existing digital broadcasting standard.

  The digital broadcast playback method according to the present invention is a method for playing back recorded broadcast data in a digital broadcast receiving apparatus capable of receiving, recording and playing back digital broadcasts. And a step of referring to the playback control flag corresponding to the part being played back, and a step of controlling the method of playing the broadcast data according to the referenced playback control flag.

  The program of the present invention causes a computer to execute each processing step of the digital broadcast reproduction method of the present invention. The program of the present invention can be installed or loaded on a computer through various recording media such as an optical disk such as a CD-ROM, a magnetic disk, or a semiconductor memory, or via a communication network.

  In this specification and the like, the means does not simply mean a physical means, but includes a case where the function of the means is realized by software. Further, the function of one means may be realized by two or more physical means, or the functions of two or more means may be realized by one physical means.

  According to the digital broadcast receiving apparatus of the present invention, when recorded broadcast data is reproduced, it can be forcibly controlled to reproduce at a normal speed without skipping a predetermined corner or the like in a CM or a program. In addition, it is possible to arbitrarily control the playback method by using only the data included in the broadcast data transmitted from a broadcasting station or the like without using a dedicated server or broadcast result data. For this reason, according to the present invention, it is possible to arbitrarily designate a method for reproducing a program or the like recorded in the digital broadcast receiving apparatus on the broadcast station side or the like.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

  FIG. 1 is a block diagram showing a schematic configuration of a digital broadcast system 100 including a digital broadcast receiver 10 according to an embodiment of the present invention. As shown in FIG. 1, the digital broadcast system 100 includes a digital broadcast transmission system 30, a digital broadcast receiver 10, and an output device 20.

  The digital broadcast receiver 10 is a device that can receive digital broadcasts. Preferably, the apparatus is capable of recording and reproducing the received program. For example, a digital broadcast compatible recorder.

  The output device 20 is a device that can output video and audio when reproducing broadcast data received by the digital broadcast receiving device 10.

  The digital broadcast receiving device 10 and the output device 20 may be configured separately, for example, like a recorder and a display, or one seg (mobile phone / mobile terminal) that is a terrestrial digital broadcast for mobile. The digital broadcast receiving apparatus 10 may be configured to include the output apparatus 20 by integrating both of them, such as a mobile phone capable of viewing a one-segment partial reception service). Moreover, the digital broadcast receiving apparatus 10 does not necessarily need to be configured by a single device.

  As an embodiment of the digital broadcast receiving device 10, a portable terminal device such as a mobile phone that supports one-segment broadcasting is particularly preferable. However, other examples include a personal computer (PC) equipped with a one-segment tuner and digital broadcast reception. A set top box (STB) or the like can be applied. Further, the output device 20 may be regarded as, for example, a digital TV capable of receiving a digital broadcast and a mobile phone having a two-dimensional code reading function, or an analog broadcast receiving device equipped with a terrestrial digital reception tuner. You may use a television. The communication method between the digital broadcast receiver 10 and the output device 20 may be wired or wireless.

  The digital broadcast transmission system 30 corresponds to a so-called broadcast station, and digitizes, multiplexes and transmits elements (video, audio, data of data broadcast) constituting a program by digital broadcast. These elements are transmitted as a TS (transport stream) that is a stream format that can be received by a digital broadcast receiver including the digital broadcast receiver 10 by bundling several broadcast channels or programs.

  The TS is transmitted via a broadcast network or a communication line. It does not matter whether the broadcast network or communication line is wired or wireless. FIG. 1 is a block diagram assuming that the recorder (digital broadcast receiving apparatus 10) receives a digital broadcast by wire as an example when the digital broadcast receiving apparatus 10 and the output apparatus 20 are configured separately. Although described, it goes without saying that the recorder may receive a digital broadcast wirelessly.

  FIG. 2 is a block diagram illustrating an example of a schematic configuration of the digital broadcast receiving apparatus 10. As shown in FIG. 2, the digital broadcast receiving apparatus 10 includes an antenna 102, a tuner unit 104, an HDD 106, a decoder 108, an encoder 110, an input unit 112, a CPU (Central Processing Unit) 116, a RAM (Random Access Memory) 118, and a storage. The unit 120 is configured to be provided.

  The antenna 102 is a parabolic antenna, a UHF antenna, or the like, for example, receives a digital broadcast wave, and outputs an RF (Radio Frequency) signal to the tuner unit 104. Thereby, the antenna 102 functions as a part of receiving means. When receiving broadcast data via a CATV line, a connection cable (not shown) or the like may be provided instead of the antenna 102.

  The tuner unit 104 includes, for example, a mixer (not shown), a channel selection circuit (not shown), an A / D conversion circuit (not shown), and the like, and is input from the antenna 102 by the mixer, the channel selection circuit, and the like. The RF signal is converted into an IF (Intermediate Frequency) signal of a channel desired by the user, and the generated IF signal is converted into broadcast data which is digital data by an A / D conversion circuit. Thereby, the tuner unit 104 functions as a part of the receiving unit together with the antenna 102.

  The HDD 106 includes, for example, a magnetic recording medium. Broadcast data is recorded in the HDD 106 by the CPU 116 executing a recording program 122 described later. Thereby, the HDD 106 functions as a storage device.

  For example, the decoder 108 performs a decoding process on the broadcast data input from the tuner unit 104 or the HDD 106 and outputs the decoded data to the output device 20 or the like.

  For example, the encoder 110 performs an encoding process on the broadcast data decoded by the decoder 108 and outputs the encoded data to the HDD 106 or the like.

  The input unit 112 includes, for example, various keys for inputting various operation signals, and outputs various operation signals to the CPU 116 when operated by the user. More specifically, the input unit 112 is operated by a user operation, for example, an operation signal instructing reproduction of a desired program from broadcast data recorded in the HDD 106, or an operation instructing fast-forwarding of a program being reproduced. The signal is output to the CPU 116. Thereby, the input unit 112 functions as an input unit.

  The CPU 116 controls the entire digital broadcast receiving apparatus 10 by reading out a processing program stored in the storage unit 120, developing it in the RAM 118, and executing it.

  The RAM 118 develops a processing program executed by the CPU 116 in a program storage area in the RAM 118, and stores input data and a processing result generated when the processing program is executed in the data storage area.

  The storage unit 120 includes, for example, a recording medium in which programs, data, and the like are stored in advance, and this recording medium is configured by, for example, a semiconductor memory. In addition, the storage unit 120 stores various data, various processing programs, data processed by executing these programs, and the like for realizing the function of the CPU 116 controlling the entire digital broadcast receiving apparatus 10.

  More specifically, the storage unit 120 stores, for example, a recording program 122 and a reproduction control program 124 as shown in FIG.

  The recording program 122 is a program for realizing a function of recording broadcast data by causing the CPU 116 to store the broadcast data received by the antenna 102 and output from the tuner unit 104 in the HDD 106, for example. More specifically, the recording program 122 realizes a function of controlling the tuner unit 104 to record the broadcast data in the HDD 106 based on an instruction from the user via the input unit 112 in the CPU 116. It is a program to let you. The CPU 116 functions as a recording unit by executing the recording program 122.

  The reproduction control program 124 controls the decoder 108 and stores it in the HDD 106 when, for example, an operation signal instructing the reproduction of broadcast data stored in the HDD 106 is input to the CPU 116 by the user operating the input unit 112. The broadcast data is subjected to a decoding process or the like, and output to the output device 20. In parallel with this reproduction processing, it is determined whether or not a fast-forward prohibition flag is added to the broadcast data, and during the reproduction of broadcast data to which the fast-forward prohibition flag is added, an instruction for fast-forward is given from the input unit 112 Even if an operation signal is input, the program disables the operation signal and realizes a function of performing a control of reproducing broadcast data at a normal speed without fast-forwarding. The CPU 116 functions as a reproduction control unit by executing the reproduction control program 124. Details of processing by the reproduction control program 124 will be described later.

  For example, as shown in FIG. 2, the output device 20 includes a display unit 22, a sound output unit 24, and the like, and displays video and audio based on video data and audio data output from the decoder 108, respectively. 22 and the sound output unit 24.

  Next, a TS (transport stream) transmitted from the digital broadcast transmission system will be described.

  FIG. 3 is an example of a schematic diagram of TS. Information transmitted as TS can be classified into three types: broadcast program (program itself), broadcast directory and program detailed information, and limited reception information.

Broadcast program (program itself)
A program in digital broadcasting is composed of main line video, main line audio, and data broadcast data. Data of data broadcasting is described in BML (Broadcast Markup Language). A plurality of BML files are collected to form data of one data broadcast program. In FIG. 3, file1, file2,. . , FileN indicates a BML file. A data broadcast program may have related contents synchronized with the main line (so-called normal television broadcast), or may have different contents unrelated to the main line.

In order for the broadcast directory / program detailed information receiver to receive a specific program or channel selected by the viewer, the correspondence between the program and the TS packet group constituting the program, and the correspondence between the TS packet and the transponder that transmits the TS packet Necessary. Each program is assigned an event ID that can uniquely identify the program, and the program and channel, and the channel and packet identification numbers are associated with each other. Such program configuration information is transmitted as table information called PSI (Program Specific Information). Detailed information such as a program title, broadcast time, channel, and program content is sent in a data format called SI (Service Information).

Limited reception information Information for setting a specific channel or only a specific program to be received by each receiver. In order to implement pay broadcasting, viewing permission control information, which is information for scrambled a specific channel or a specific program so that it can be viewed only by a specified receiver (IC card number), and pay broadcasting Viewing history collection information for recording and collecting viewing performance required for the billing process (PPV).

  The digital broadcast transmission system 30 can send a trigger signal called an event message during a program broadcast. The event message can be used for the purpose of changing the display of the data broadcast content at a certain timing of the program.

  FIG. 4 is a diagram showing an outline of the format of an event information section (Event Information Section) 40.

  The SI in the broadcast data includes an event information table. The event information table is a table that provides information on a program (event), a table that provides information on a program that is currently being broadcast and a program that is broadcast next, and a table that provides information corresponding to the program table. For example, the genre, program name, program content, event ID, etc. of the program currently being broadcast are described. The event information table is transmitted in a signal format called an event information section.

  In this embodiment, the event information section 40 includes an area 41 for storing an event ID and an area 42 for storing a reproduction control flag, as shown in FIG. At the time of filing this application, the area 41 for storing the event ID is defined in the PSI / SI standard, but the area 42 for storing the reproduction control flag is not defined in the standard. Therefore, it is preferable to embed information related to the reproduction control flag using a spare area that is not particularly used in the current standard.

  The event ID is an identifier typically given to a digital broadcast program for each program in order to identify each program in the digital broadcast. Instead of assigning the event ID in units of one program, the event ID may be assigned in units smaller than the program, for example, one corner or CM in the program.

  The reproduction control flag is control information unique to the present invention. When the digital broadcast receiving apparatus 10 reproduces the broadcast data recorded in the HDD 106, the digital broadcast receiving apparatus 10 refers to the reproduction control flag to control the reproduction method. For example, fast-forwarding can be prohibited or a luminance processing AGC (Automatic Gain Control) circuit can be controlled using a reproduction control flag.

  Next, an outline of the operation of the digital broadcast receiving apparatus 10 will be described. In the following embodiment, a case where the reproduction control flag is used as a fast-forward prohibition flag is shown.

  FIG. 5 is a schematic diagram showing an example of broadcast data transmitted from the digital broadcast transmission system 30 and recorded in the HDD 106 of the digital broadcast receiving apparatus 10. When the digital broadcast receiving apparatus 10 records a program, the HDD 106 records the contents of the event information table included in the broadcast data in addition to video and audio. At this time, the playback control flag included in the event information table is recorded in the HDD 106 corresponding to video and audio data, for example, as shown in FIG.

  In the example shown in FIG. 5, the main program 50, CM 51, main program 52, CM 53, and main program 54 are transmitted from the digital broadcast transmission system 30. In addition, a playback control flag for each section in the broadcast data is set on the digital broadcast transmission system 30 side such as a broadcasting station. In this embodiment, “0” indicating that fast-forwarding is possible is set as the reproduction control flags 55, 57, 59 in association with the main programs 50, 52, 54. In association with the CMs 51 and 53, “1” indicating that fast-forwarding is not possible is set as the reproduction control flags 56 and 58. When the main program and CM video and audio data 50 to 54 are transmitted from the digital broadcast transmission system 30, corresponding playback control flags 55 to 59 are embedded in the event information section 40, and the video and audio data 50 to 50 are embedded. 54.

  When the broadcast data is recorded, the digital broadcast receiving apparatus 10 not only records the main program or CM video and audio data 50 to 54 on the HDD 106 but also includes playback control flags 55 to 59 corresponding to the audio data 50 to 54. Records in the HDD 106. When the recorded broadcast data is reproduced, the reproduction control flags 55 to 59 recorded in the HDD 106 are referred to control the reproduction method.

  FIG. 6 is a flowchart showing the flow of playback control processing in the digital broadcast receiving apparatus 10. Note that the process of recording broadcast data, the process until playback of the recorded broadcast data, and the playback stop process are the same as the conventional recording / playback process, except that the playback control flag must be recorded.

  The digital broadcast receiving apparatus 10 determines whether an instruction from the user is input through the input unit 112 during the reproduction of the broadcast data (S60). If no instruction is input from the user (S60: NO), the previous state is maintained, and if the broadcast data is being reproduced, the reproduction process is continued as it is. However, when the recorded data ends, the reproduction process ends. If the broadcast data is not reproduced, the process waits as it is.

  On the other hand, when the input from the user is accepted (S60: YES), the reproduction control flag corresponding to the part being reproduced or being reproduced is read from the HDD 106 and the status is confirmed (S61). If the reproduction control flag is down (S61: “0”), the process based on the input instruction is executed as it is (S62). That is, if the user has instructed fast-forwarding, fast-forwarding processing (including fast-forwarding reproduction) is executed, and if rewinding has been instructed, rewinding processing is executed. On the other hand, when the reproduction control flag is set (S61: “1”), the broadcast data reproduction method is controlled to be limited according to the type of the reproduction control flag (S63).

  For example, when the playback control flag is flag information indicating permission or prohibition of fast-forwarding, if the playback control flag is “1” indicating that fast-forwarding is impossible, fast-forwarding processing is prohibited. In this case, even if the user instructs to fast-forward the broadcast data being reproduced from the input unit 112, the fast-forward instruction is invalidated, and the reproduction at the normal speed is continued without performing the fast-forward process. However, when an instruction other than fast-forwarding is input from the user, processing based on the input instruction is executed.

  As a result, as shown in FIG. 5, “0” indicating that fast-forwarding is possible is set in the reproduction control flags 55, 57, and 59 in association with the main programs 50, 52, and 54, and in association with the CMs 51 and 53. Thus, when reproducing broadcast data in which “1” indicating that fast-forwarding cannot be performed is set in the reproduction control flags 56 and 58, the user performs all operations including fast-forwarding when reproducing the main program 50, 52, and 54. On the other hand, when the CMs 51 and 53 are reproduced, the fast-forward process cannot be executed. Therefore, in this embodiment, when reproducing the recorded digital broadcast data, the viewer cannot fast-forward the CM. It is preferable that not only the fast-forward process is prohibited but also the CM skip process is prohibited by the fast-forward prohibition flag.

  As described above, according to the present invention, when the recorded digital broadcast is reproduced, it is determined whether or not to execute the process based on the input instruction based on the reproduction control flag corresponding to the portion being reproduced. If the playback control flag is used as a fast-forwarding prohibition flag, it is possible to prohibit the fast-forwarding process when a fast-forwarding instruction is input from the user. Therefore, by setting the playback control flag on the broadcasting station side or the like, it becomes possible to control the permission or prohibition of fast-forwarding at any part of the broadcast data. If a fast-forward prohibition flag is set in the CM portion on the broadcasting station side or the like, fast-forwarding or skipping by the viewer can be prohibited when the recorded broadcast data is reproduced. In this way, since the CM portion can be controlled to allow reproduction only at the normal speed, an improvement in the advertising effect can be expected.

  The present invention is not limited to the above-described embodiment, and can be implemented in various other forms without departing from the gist of the present invention. For this reason, the said embodiment is only a mere illustration in all points, and is not interpreted limitedly. For example, the above-described processing steps can be executed in any order or in parallel as long as there is no contradiction in the processing contents.

  In this embodiment, an example is shown in which fast-forwarding and skipping of CMs are prohibited, but not limited to CMs, fast-forwarding and skipping of arbitrary corners and arbitrary times in a program may be prohibited. In other words, if the broadcast control or the like is set to enable / disable fast-forwarding or skipping for each corner or CM in the program using the playback control flag in the SI information, the digital broadcast receiving device 10 When playing back a recorded program, the playback control flag can be referenced to control playback at each corner or CM in the program.

  Further, in this embodiment, an example in which permission or prohibition of fast-forwarding is controlled by the reproduction control flag is shown, but various processes can be controlled by using the reproduction control flag in addition to the fast-forwarding process. become. For example, by controlling the function to control the brightness processing AGC (Automatic Gain Control) circuit using the playback control flag, the function to automatically adjust the gain of the brightness input signal to maintain appropriate brightness is controlled. May be.

1 is a block diagram showing a schematic configuration of a digital broadcast system 100 including a digital broadcast receiver 10. 2 is a block diagram illustrating an example of a schematic configuration of a digital broadcast receiving device 10. FIG. It is an example of the schematic diagram of TS (transport stream). It is a figure which shows the outline of the format of the event information section (Event Information Section) 40. 4 is a schematic diagram showing an example of broadcast data transmitted from the digital broadcast transmission system 30 and recorded in the HDD 106 of the digital broadcast reception device 10. FIG. 4 is a flowchart showing a flow of playback control processing in the digital broadcast receiving apparatus 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Digital broadcast receiver 20 Output device 22 Display part 24 Sound output part 30 Digital broadcast transmission system 100 Digital broadcast system 102 Antenna (a part of receiving means)
104 Tuner (part of receiving means)
106 HDD (storage device)
108 Decoder 110 Encoder 112 Input unit (input means)
116 CPU (recording means, reproduction control means)
118 RAM
120 Storage Unit 122 Recording Program 124 Playback Control Program

Claims (8)

Receiving means for receiving digital broadcasting;
Recording means for storing broadcast data received by the receiver in a storage device;
Playback control means for playing back the broadcast data stored in the storage device;
With
The broadcast data includes a playback control flag,
The reproduction control means refers to a reproduction control flag corresponding to the part being reproduced, and controls a method of reproducing broadcast data.
A digital broadcast receiver characterized by that. It further comprises input means for inputting an instruction from the user,
The reproduction control means determines whether or not to execute processing based on the inputted instruction according to a reproduction control flag corresponding to a part being reproduced when an instruction from the user is inputted by the input means. To
The digital broadcast receiver according to claim 1. The reproduction control flag is flag information indicating permission or prohibition of fast-forwarding,
When the input means accepts a fast-forward instruction from the user, the playback control means plays back the broadcast data being played back in fast-forward if the playback control flag included in the broadcast data being played back indicates permission for fast-forward. When the reproduction control flag indicates prohibition of fast-forwarding, the instruction from the user accepted by the input unit is invalidated, and fast-forwarding of the broadcast data being reproduced is prohibited and the broadcast data is reproduced at a normal speed.
The digital broadcast receiver according to claim 2. The playback control flag is set to prohibit fast-forwarding at a location corresponding to the CM.
The digital broadcast receiver according to claim 3. The playback control flag is included in the event information table.
The digital broadcast receiver according to claim 1, wherein the digital broadcast receiver is a digital broadcast receiver. In a digital broadcast receiving apparatus capable of receiving, recording, and playing back digital broadcasts, a method of playing back recorded broadcast data,
A step of referring to a reproduction control flag included in the broadcast data during reproduction of the broadcast data and corresponding to the portion being reproduced;
Controlling a method of reproducing broadcast data according to the reproduction control flag referred to;
A digital broadcast reproduction method comprising:   A program for causing a computer to execute the digital broadcast reproduction method according to claim 6.   A computer-readable recording medium on which the program according to claim 7 is recorded.

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