JP4879146B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus that receives and records terrestrial digital broadcasts.

  Terrestrial digital broadcasting is performed by dividing one channel into 13 segments. Broadcasts for fixed receivers are broadcasts in which 12 of the 13 segments are allocated (hereinafter referred to as 12-segment broadcasts), such as high-definition broadcasts using one program per channel and three programs per channel. Is broadcast at standard quality. The broadcast for portable receivers is a broadcast to which one segment out of 13 segments is allocated (hereinafter referred to as one segment broadcast), and a simple moving image is broadcast.

  In recent years, portable terminals such as mobile phones having a function of receiving one-segment broadcasting have become widespread, and it has been possible to take out of the house as well as outside the house and view digital terrestrial broadcasts. It became an environment that can be watched by moving the data recorded in to the mobile terminal.

  However, the conventional fixed receiver receives and demodulates all 13 segments, but at the time of recording, only the 12-segment broadcast program data is extracted to create the recorded data. Not included. Therefore, there is a problem that viewing on a mobile terminal is difficult.

  As a countermeasure for this problem, an apparatus (for example, see Patent Document 1) in which a fixed receiver is provided with means for receiving, demodulating, and recording two systems of 12-segment broadcasting and 1-segment broadcasting, or for mobile terminals in advance. There is an apparatus (see, for example, Patent Document 2) that converts data to data for a portable terminal by a fixed receiver and records the data when the user designates the recording as the data.

JP 2005-204064 A JP 2007-155102 A

  However, Patent Document 1 has a problem that the circuit scale and software scale of the apparatus increase. In addition, since the recording data for the fixed receiver and the recording data for the portable terminal exist in the apparatus, there is a problem that management data and a management method for associating both data are required.

  Further, in Patent Document 2, there is a problem that the user has to explicitly specify a future reproduction form.

  The present invention has been made to solve these problems. When a broadcast program for a fixed receiver is received and recorded, the broadcast program for the fixed receiver and the broadcast program for a portable receiver are simultaneously recorded. It is an object of the present invention to provide a recording apparatus for recording and converting the recorded broadcast program for a portable receiver so that the portable terminal can reproduce the broadcast program.

In order to solve the above problems, a recording apparatus according to the present invention is a recording apparatus that receives a digital broadcast in which one channel is divided into a plurality of segments and records a program on a recording medium. Of these, the receiving means for receiving the segment broadcast allocated for the fixed receiver and the segment broadcast allocated for the portable receiver, and the segment broadcast allocated for the fixed receiver received by the receiving means. When recording a program, PID acquisition for acquiring a PID of a packet constituting the program to be recorded and a PID of a packet constituting a program being broadcast on the same channel as a segment broadcast allocated for the portable receiver Means, a PID table for setting the PID acquired by the PID acquisition means, and demodulated by the reception means Packet extraction for extracting a packet having a PID set in the PID table from stream data obtained by multiplexing broadcast data of a segment allocated for a fixed receiver and broadcast data of a segment allocated for a portable receiver Means, recording means for recording recorded data consisting of packets extracted by the packet extracting means on a recording medium, and packets constituting a segment broadcast program allocated to the portable receiver from the recorded data recorded on the recording medium. The program extracting means for extracting, the data format converting means for converting the program data composed of the packets extracted by the program extracting means into a data format that can be reproduced by the portable receiver, and the data generated by the data format converting means can be attached and detached. and a memory card control means for transmitting to the memory card attached to Characterized in that it obtain.

According to the present invention, when the PID acquisition unit performs the program recording of the broadcast of the segment allocated for the fixed receiver received by the receiving unit, the PID of the packet constituting the recorded program and the portable receiver The PID of the packet constituting the program being broadcast on the same channel is acquired as the broadcast of the allocated segment, the PID table is set with the PID acquired by the PID acquisition means, and the packet extraction means is demodulated by the reception means. a stationary broadcast segments assigned to the receiver for data and broadcast data segment allocated to the portable receiver for is multiplexed stream data, and extracts packets having the PID set in the PID table, the program extracts The means is assigned to the portable receiver from the recorded data recorded on the recording medium. The data format conversion means converts the program data consisting of the packets extracted by the program extraction means into a data format that can be played back by the portable receiver, and the memory card control means Since the data generated by the data format conversion means is transmitted to a detachable memory card, when receiving and recording a digital broadcast, a broadcast program for a fixed receiver and a broadcast program for a portable receiver are It is possible to record at the same time and convert the recorded broadcast program for portable receivers so that it can be played back on a portable terminal.

  Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment 1>
FIG. 1 is a block diagram of a recording apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, a recording apparatus 1 that receives a digital broadcast in which one channel is divided into a plurality of segments and records a program on a recording medium includes a 12-segment broadcast and a 1-segment broadcast among a plurality of segments of the digital broadcast. The antenna 2 that receives the segment broadcast, the tuner unit 3 (reception means) that demodulates the digital broadcast received by the antenna 2, and the broadcast program data demodulated by the tuner unit 3 are MPEG (Moving Picture Expert Group) video data, MPEG A demultiplexer unit 4 that outputs audio data and program additional information separately, a decoder unit 5 that decodes MPEG video data and MPEG audio data output from the demultiplexer unit 4, and a tuner unit 3 Packet PID (Pack) extracted from broadcast program data t ID) table 6, control unit 7 that controls the entire recording apparatus 1, input processing unit 9 that performs input processing from the user by the remote controller 8, and data output to a monitor such as a television. A display processing unit 10, an HDD 11 (recording medium) for recording a recorded program, a memory card 12 detachably attached to the recording device 1, and a memory card control for controlling data transmission / reception with respect to the memory card 12 Part 13 (memory card control means).

  First, the operation of the recording process by the recording apparatus 1 will be described.

  FIG. 2 is a flowchart of the recording process according to the first embodiment of the present invention.

  In step S <b> 1, for example, when the user inputs an operation for starting recording via the input processing unit 9 using the remote controller 8 to the recording device 1, the control unit 7 records the 12-segment broadcast program received by the antenna 2. To start.

  In step S 2, when recording is started, the PID acquisition unit of the control unit 7 acquires the PID of a packet constituting a program to be recorded by 12 segment broadcast and sets it in the PID table of the memory 6. Here, the packets constituting the program include, for example, program identification information such as PAT (Program Association Table) and PMT (Program Map Table), video, audio, subtitle, text super, and ES (Elementary stream) of data broadcasting. Including packets.

  In step S 3, the PID acquisition unit acquires the PID of the packet constituting the program being broadcast in the one-segment broadcast and sets it in the PID table of the memory 6. In the one-segment broadcasting, the PMT is easily acquired because the PMT PID is determined in advance, and the PMT PID is set in the PID table of the memory 6. At the same time, the acquired PMT is analyzed to acquire the PID of the ES and set in the PID table of the memory 6.

  In step S4, the packet extraction means of the control unit 7 has the PID set in the PID table of the memory 6 from the stream data obtained by multiplexing the 12 segment broadcast data demodulated by the tuner unit 3 and the 1 segment broadcast data. Extract the packet.

  In step S <b> 5, the recording unit of the control unit 7 records the recording data including the packet extracted in step S <b> 4 on the HDD 11.

  FIG. 3 is a diagram showing an example of recorded data according to the first embodiment of the present invention. When the processing of FIG. 2 is performed, one piece of recording data as shown in FIG. 3 is generated, in which program data to be recorded in 12 segment broadcast and program data to be recorded in 1 segment broadcast are multiplexed. In FIG. 3, (a) shows a 12-segment broadcast packet, and (b) shows a 1-segment broadcast packet.

  Next, an operation of processing for extracting a one-segment broadcast program from the recorded data recorded in the HDD 11 will be described.

  FIG. 4 is a flowchart of the program extraction process according to the first embodiment of the present invention.

  In step S 10, for example, when the user inserts the memory card 12 into the recording apparatus 1 and inputs an operation of taking out a one-segment broadcast program from the HDD 11 through the input processing unit 9 using the remote controller 1 to the recording apparatus 1. The control unit 7 starts the process of extracting a one-segment broadcast program from the HDD 11.

  In step S <b> 11, the program extraction unit of the control unit 7 reads data for one packet out of the packets constituting the one-segment broadcast program from the recorded data recorded in the HDD 11.

  In step S12, the PID described in the header of the read packet is acquired, and it is determined whether it is the PID of the 1-segment broadcast PMT set in the PID table of the memory 6. As a result of the determination, if it is a PID of a PMT of one segment broadcast, the process proceeds to step S13, and if not, the process proceeds to step S14.

  In step S13, if the PID of the PMT of the one segment broadcast is obtained in step S12, the PMT section is analyzed, the PID of the ES of the one segment broadcast is acquired and set in the PID table of the memory 6, and then the step S16. Migrate to

  In step S14, if it is not the PID of the 1-segment broadcast PMT in step S12, it is determined whether it is the PID of the 1-segment broadcast ES set in the PID table of the memory 6. If it is the PID of one-segment broadcasting ES, the process proceeds to step S15, and if not, the process proceeds to step S11.

  In step S15, if it is the PID of the ES of one segment broadcast in step S14, the read data for one packet is written into the memory 6 or the buffer in the HDD 11, and the process proceeds to step S16.

  In step S16, it is determined whether the data has been read up to the end of the recorded data recorded on the HDD 11. If data has not been read up to the end of the recorded data, the process returns to step S11 to continue reading data until the end of the recorded data.

  In step S17, when it is determined in step S16 that the data has been read up to the end of the recorded data, reading of the recorded data from the HDD 11 is terminated.

  By performing the above processing, it is possible to generate program data composed of packets constituting a one-segment broadcast program from the recorded data recorded on the HDD 11.

  The program data generated by the processing in FIG. 4 is converted into a data format (for example, SD-Video standard) that can be played back by the portable terminal by the data format conversion means of the control unit 7. At this time, depending on the data format, it is necessary to create new data separately from the program data. For example, in the case of the SD-Video standard, it is necessary to create data such as timing management information for reproduction control, extended information for reproduction control, and program attribute information.

  The program data whose data format has been converted by the data format means of the control unit 7 is stored in the memory card 12 detachably attached to the recording apparatus 1 by the memory card control unit 13 together with new data created as necessary. Sent. The memory card 12 may be any memory card such as an SD card.

  From the above, when recording a 12-segment broadcast program, the circuit scale is obtained by creating and recording one recording data in which the 12-segment broadcast program data and the 1-segment broadcast program data are multiplexed. And can be processed by a conventional fixed receiver system without increasing the software scale. Further, since a 1-segment broadcast is automatically recorded when a 12-segment broadcast program is recorded, the user operation is not complicated.

<Embodiment 2>
In Embodiment 2 of the present invention, when recording a 12-segment broadcast program received by the antenna 2 of the recording apparatus 1, the control unit 7 creates metadata of program data transmitted as the 1-segment broadcast on the same channel. A metadata creation unit is provided, the metadata is recorded on the memory card 12 by the recording unit of the control unit 7, and the data format is converted by the data format conversion unit of the control unit 7 based on the metadata.

  Specifically, before the packet extraction unit of the control unit 7 extracts the packet from the stream data output from the tuner unit 3, the metadata generation unit of the control unit 7 performs information (for example, information on 1-segment broadcast data). , Packet arrival time, packet loss information, etc.) are created as metadata, and when the program recording ends, the recording means of the control unit 7 records the metadata in the HDD 11.

  Then, when the data format conversion means converts the 1-segment broadcast program data generated by the program extraction means into a data format that can be played back on the portable terminal, the controller 7 creates new data separately from the program data. When it is necessary to read the metadata, it is possible to read the metadata from the HDD 11 and obtain information necessary for creating new data from the metadata or derive it from the information described in the metadata.

  From the above, by creating metadata by the metadata creation means, when it is necessary to create new data that can be played back on a mobile device, information is acquired from the metadata, so the efficiency of data creation is high Thus, various data formats can be supported.

  As an application example of the present invention, the present invention can be applied to a liquid crystal digital television, a DVD recorder, and the like, which are digital broadcast receivers equipped with a recording medium such as an HDD.

It is a block diagram of the video recording apparatus by Embodiment 1 of this invention. It is a flowchart of the video recording process by Embodiment 1 of this invention. It is a figure which shows an example of the video recording data by Embodiment 1 of this invention. It is a flowchart of the program extraction process by Embodiment 1 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Recording device, 2 Antenna, 3 Tuner part, 4 Demultiplexer part, 5 Decoder part, 6 Memory, 7 Control part, 8 Remote control, 9 Input processing part, 10 Display processing part, 11 HDD, 12 Memory card, 13 Memory card Control unit.

Claims (2)

A recording apparatus for receiving a digital broadcast in which one channel is divided into a plurality of segments and recording a program on a recording medium,
Receiving means for receiving a broadcast of a segment allocated for a fixed receiver and a broadcast of a segment allocated for a portable receiver among the plurality of segments;
When the program recording of the broadcast of the segment allocated for the fixed receiver received by the receiving means is performed, the PID of the packet constituting the program to be recorded and the segment allocated for the portable receiver PID acquisition means for acquiring a PID of a packet constituting a program being broadcast on the same channel as broadcast;
A PID table for setting the PID acquired by the PID acquisition means;
Set in the PID table from stream data obtained by multiplexing the broadcast data of the segment allocated for the fixed receiver and the broadcast data of the segment allocated for the portable receiver demodulated by the receiving means. Packet extracting means for extracting a packet having the PID,
Recording means for recording the recording data consisting of packets extracted by the packet extraction means on the recording medium;
Program extraction means for extracting packets constituting a broadcast program of a segment allocated for the portable receiver from recorded data recorded on the recording medium;
Data format conversion means for converting program data consisting of the packets extracted by the program extraction means into a data format reproducible by the portable receiver;
Memory card control means for transmitting data generated by the data format conversion means to a detachably mounted memory card;
A recording apparatus comprising: The program data transmitted on the same channel as the segment broadcast allocated to the portable receiver when the program recording of the segment allocated to the fixed receiver received by the receiving means is configured. Further comprising metadata creating means for creating information on the packet to be processed as metadata,
2. The recording apparatus according to claim 1, wherein the metadata is recorded on the recording medium by the recording means, and the data format is converted by the data format conversion means based on the metadata.

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