JP2008160521A - Video voice recording/reproducing system and video voice recording/reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable video voice data, which could not be recorded due to poor reception sensitivity, to be reproduced. <P>SOLUTION: A chapter is set according to a variation of a reception sensitivity of each device among a plurality of video voice recording/reproducing devices 10, 10, ... which share recording programming information, and chapter information is shared with other devices. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video / audio recording / reproducing system and a video / audio recording / reproducing apparatus for receiving a digital broadcast radio wave and recording and reproducing the received broadcast program on a recording medium.

  In recent years, digitalization of television broadcasting has progressed in earnest, and television receivers compatible with digital broadcasting have begun to gain popularity. In addition, the main broadcast of portable one-segment digital broadcasting has been started, and the receiving terminal devices have been commercialized one after another.

  In proportion to the spread of these receiving apparatuses, video / audio recording / reproducing apparatuses capable of recording and reproducing digital broadcasts on recording media such as hard disks, memory cards, DVD media, and next-generation media are also becoming increasingly popular. Accordingly, various types of devices such as a stationary video / audio recording / reproducing apparatus installed in a home and a portable video / audio recording / reproducing apparatus having a reduced size have been proposed to users. For example, a portable video / audio recording / reproducing apparatus includes a one-segment digital broadcast receiving function and a mobile phone incorporating the broadcast recording / reproducing function.

  Therefore, a user can use a stationary video / audio recording / reproducing apparatus at home and carry a portable video / audio recording / reproducing apparatus outside the room.

  In this way, the user can receive a digital broadcast wave inside or outside the room and record the broadcast program on the recording medium. However, in the case of reception outside the room, as in the case of analog broadcasting, depending on the reception conditions, the reception sensitivity may be poor, and when recording a video, the broadcast program may not be viewable. There is.

In order to solve such a problem, for example, Patent Document 1 discloses that a part of a recording reservation is shared between a plurality of video / audio recording / reproducing apparatuses connected to each other by a communication unit, thereby starting recording. A technique has been disclosed in which a broadcast program can be received by another device even when the broadcast program cannot be received by the device, and recording is normally performed. That is, the user can specify sharing of recording reservation information through the network, and recording and sharing of a broadcast program can be performed by a plurality of video / audio recording / reproducing apparatuses.
JP 2004-364186 A

  However, in the above-described technology, it is assumed that the reception sensitivity of all the video / audio recording / reproducing apparatuses connected on the network can secure a quality sufficient for recording. Therefore, if the reception sensitivity differs between the devices, even if the recording reservation of the video / audio data can be shared between the devices, the video / audio data can be acquired only partially in the device with poor reception sensitivity. There may be no cases.

  In addition, even if the video / audio data can be shared over the network, it is a burden on the user to try to link the video / audio data recorded incompletely between the devices so as to become the original video / audio data. It was very inconvenient.

  The present invention has been made in view of this point, and an object of the present invention is to be able to reproduce video and audio data that could not be recorded due to poor reception sensitivity.

That is, the present invention is a video / audio recording / reproducing system that performs communication and data exchange with each other using a plurality of video / audio recording / reproducing devices,
The video / audio recording / reproducing apparatus comprises:
Receiving means for receiving video and audio data of digital broadcasting;
A reception state acquisition unit that acquires information indicating a reception state of the video and audio data in the reception unit;
Recording / reproducing means for reproducing the recorded video / audio data while recording the received video / audio data on a recording medium;
Chapter setting means for setting a chapter for reproduction from a specific position on the video / audio data recorded on the recording medium and recording the chapter on the recording medium;
Communication means for performing communication and data exchange with other video / audio recording / reproducing devices;
When recording of video / audio data is started by one of the plurality of video / audio recording / reproducing devices, recording of the same video / audio data is started by another video / audio recording / reproducing device, while recording of the video / audio data is started. Control means for setting a chapter at the changed position when one of a plurality of video / audio recording / reproducing devices changes, and controlling the sharing of the chapter information among the devices. It is characterized by that.

  Further, the present invention is a video / audio recording / reproducing apparatus used in such a video / audio recording / reproducing system.

  As described above, according to the present invention, a chapter is set according to a change in reception sensitivity, and the chapter can be shared among a plurality of video / audio recording / reproducing apparatuses sharing a recording reservation for the same video / audio data. Thus, it is possible to easily confirm when the reception sensitivity has changed while reproducing the actual video / audio data.

  Also, in other video / audio recording / playback devices that share the recording reservation, video / audio data that could not be recorded due to poor reception sensitivity was skipped by the chapter on the device that was able to record well. It can be easily played by playing.

  As described above, the convenience is improved for a user who owns a plurality of video / audio recording / reproducing apparatuses, that is, a portable video / audio recording / reproducing apparatus and a stationary video recording / reproducing apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

<Embodiment 1>
FIG. 1 is a block diagram showing a configuration of a video / audio recording / reproducing apparatus 10 according to Embodiment 1 of the present invention. As shown in FIG. 1, a video / audio recording / reproducing apparatus 10 includes a receiving unit 1 that receives video / audio data of digital broadcasting, a data processing unit 2 that processes the received video / audio data, and received video / audio data. Recording / reproducing unit 3 that reproduces recorded video / audio data while recording on a recording medium, reception state obtaining unit 4 that obtains information indicating a reception state of video / audio data, and reproduction from a specific position of video / audio data A chapter setting unit 5 for setting a chapter for performing communication, a communication unit 6 for mutual communication and data exchange with another video / audio recording / reproducing device 10, and a control unit 7 for controlling the operation of the video / audio recording / reproducing device 10. And.

  The recording / playback unit 3 records playback time information and encoded video / audio data necessary for playback on a recording medium such as a semiconductor memory during recording. At the time of reproduction, the encoded video / audio data is decoded using the reproduction time information, and the video / audio is reproduced while being synchronized.

  The reception state acquisition unit 4 acquires the reception state using reception sensitivity information provided by a tuner module for receiving broadcast radio waves.

  The chapter setting unit 5 sets chapters on the device side having good reception sensitivity when relaying recording. The chapter is added to the recording medium along with the time information at the time of reproduction.

  The communication unit 6 communicates with other devices through a communication line such as a wireless network or FTTH.

  FIG. 2 is a block diagram showing a configuration of the video / audio recording / reproducing system 20 according to the first embodiment. As shown in FIG. 2, this video / audio recording / reproducing system 20 uses four video / audio recording / reproducing apparatuses 10 to communicate and exchange data with each other by the communication unit 6 of each of the apparatuses 1 to 4. .

  FIG. 3 is a schematic diagram showing recording states of video / audio data and chapter data recorded on a recording medium by the recording / reproducing unit 3 of each of the devices 1 to 4 using four video / audio recording / reproducing devices 10. In FIG. 3, the recording time (1 hour in FIG. 3) of the video / audio data is shown on the horizontal axis, and the devices 1 to 4 are shown on the vertical axis. In addition, the video / audio data is represented as “received AV-Data”, and the chapter data is indicated by a maximum of 5 points in order of time passage from left to right.

  FIG. 4 defines a reception state acquired by the reception state acquisition unit 4 of the video / audio recording / reproducing apparatus 10 and shows a relationship with whether or not recording can be performed by the recording / reproduction unit 3 in each reception state.

  Specifically, level 0 indicates a state in which reception of video / audio data is not started by the receiving unit 1, and indicates that it has not been received.

  Level 1 indicates that the video / audio data has not been acquired by the receiving unit 1 and that reception is not possible.

  Level 2 is a state in which the audio / video data is barely acquired by the receiving unit 1 (a state in which noise is included), and indicates that the reception unit 1 is ready to receive.

  Level 3 is a state in which the audio / video data is acquired by the receiving unit 1 (a state in which correction is performed when an abnormality occurs in the data processing unit 2), and is a normal receiving state. Show.

  Level 4 is a state in which the audio / video data can be acquired in a good state in the receiving unit 1 (a state in which no abnormality has occurred in the data processing unit 2), and indicates a good receiving state. .

  FIG. 5 is a diagram showing the data contents of the chapter data recorded on the recording medium by the recording / reproducing unit 3 of each of the devices 1 to 4 when the video / audio is recorded using the four video / audio recording / reproducing devices 10. is there.

  FIG. 6 is a flowchart showing a control procedure when video / audio data is stored in the control unit 7 of the video / audio recording / reproducing apparatus.

  Hereinafter, the operation of the video / audio recording / reproducing apparatus 10 according to the first embodiment will be described with reference to FIGS. In the description of the operation, it is assumed that the communication delay is so small that it is not necessary to consider it. In addition, the devices 1 to 3 are portable video / audio recording / reproducing devices 10 whose reception sensitivity is easily changed, and the device 4 is a stationary video / audio recording / reproducing device 10 having stable reception sensitivity.

  First, when the recording reservation of the video / audio data is made in the device 1, information indicating the recording reservation is transmitted to the other devices 2 to 4 by the communication unit 6, and the reservation information is shared among the devices 2 to 4.

  Next, the video / audio data to be recorded is received by the receivers 1 of the devices 1 to 4, and the recording / playback unit 3 starts recording the video / audio data on the recording medium. At this time, information indicating reception sensitivity is simultaneously acquired in the reception state acquisition unit 4 of each of the devices 1 to 4.

  Here, as illustrated in FIG. 3, in each of the devices 1 to 4, the reception state changes from the non-reception state to the reception state. Therefore, as shown in FIG. 6, in step S501, a chapter is set by the chapter setting unit 5 of each device 1 to 4, and the process proceeds to the subsequent step S502.

  Specifically, as shown in FIG. 5, the device 1 has Chap1-1 (recording start 00:00), the device 2 has Chap2-1 (recording start 00:00), and the device 3 has Chap3-1 (recording start 00: 00), in the device 4, Chap4-1 (recording start 00:00) is set. As for the reception sensitivity data in each chapter, the device 1 receives from the non-reception state “level 0” to the receivable state “level 2”, the device 2 from the non-reception state “level 0” to the normal state “level 3”, and the device 3 Is changed from the unreceived state “level 0” to the normal state “level 3”, and the device 4 is changed from the unreceived state “level 0” to the normal state “level 3”.

  In step S502, chapter data is recorded on the recording medium together with the video / audio data by the recording / reproducing unit 3, and the process proceeds to the subsequent step S503.

  In step S503, it is determined whether or not the recording operation by the recording / reproducing unit 3 is to be continued. If “YES” at step S503, the process branches to step S504. If the determination in step S503 is “NO”, the recording process ends.

  In step S504, it is determined whether the reception state has changed in each of the devices 1 to 4. If “YES” at step S504, the process branches to step S502, and the chapter data is recorded together with the video / audio data again. If the determination in step S504 is “NO”, the process ends.

  Specifically, as shown in FIG. 3 and FIG. 5, the device 1 is in the reception-enabled state “level 2” from the reception-disabled state “level 1”, and the devices 2 and 3 are in the normal state “level 3” from the reception-disabled state “level”. It has changed to 1 ”. Then, Chap1-2 is set for the device 1, Chap2-2 is set for the device 2, and Chap3-2 is set for the device 3. As a result, Chap1-1 (recording section 00: 00-00: 12) is used in apparatus 1, Chap2-1 (recording section 00: 00-00: 28) in apparatus 2, and Chap3-1 (recording section 00: The recording section of 00-00: 18)) is confirmed.

  The updated chapter data and the newly added chapter data are updated and recorded on the recording medium together with the video / audio data by the recording / reproducing unit 3.

  Although the following description is omitted, as shown in FIGS. 3 and 5, the chapter information is updated and determined according to the change in reception sensitivity, and a new chapter is set.

  The chapters set as shown in FIGS. 3 and 5 are shared between the devices 1 to 4 by the communication unit 6. As a result, for example, Chap1-2 and Chap1-4 video / audio data with poor reception sensitivity in the device 1 share the information of Chap1-2 and Chap1-4 with the recorded content of the video / audio data in the device 4 By skipping the recording sections 00: 18-00: 22 and 00: 42-00: 50, the video and audio data that could not be recorded because the device 1 was in a reception-disabled state can be easily reproduced. Can be confirmed.

  As described above, according to the video / audio recording / reproducing system 20 and the video / audio recording / reproducing apparatus 10 according to the first embodiment, the chapter information generated based on the change in the reception sensitivity is shared using the communication unit 6. Thus, video / audio data that could not be recorded because the reception was disabled in a certain device can be easily confirmed on the device having good reception sensitivity.

  In the first embodiment, after recording is started, even if the video / audio data is in the reception disabled state (level 1) shown in FIG. 4, chapters are generated, and the video / audio data which is actually meaningless data is generated. Although it has been described that the operation is performed in such a manner that the recording is continued, the recording may be controlled not to be recorded on the recording medium. Thus, by not recording video / audio data that cannot be played back as video or audio during playback, or chapters related thereto, on the recording medium, it is possible to improve the recording capacity of the recording medium required for chapter selection and chapter storage during playback. It becomes possible.

<Embodiment 2>
FIG. 7 is a block diagram showing the configuration of the video / audio recording / reproducing apparatus 15 according to Embodiment 2 of the present invention. Since the difference from the first embodiment is that a chapter storage unit 9 is added, the same parts as those in the first embodiment are denoted by the same reference numerals, and only the differences will be described.

  As shown in FIG. 7, the chapter storage unit 9 stores recording medium information of video / audio data, identification information of video / audio data, and information (recording section) related to chapters.

  The chapter setting unit 8 is configured to record chapter data in the chapter storage unit 9 at the time of chapter setting.

  FIG. 8 shows the data contents of the chapter data recorded in the chapter storage unit 9 of each of the devices 1 to 4 when the video / audio data is recorded using the four video / audio recording / reproducing devices 15 according to the second embodiment. FIG. Here, it is assumed that the reception state and the recording section are the same as the example shown in FIG. 5 of the first embodiment.

  Here, as the recording medium information, the identification numbers of the media on which the video and audio data are recorded by the respective devices 1 to 4 are newly expressed as # 1, # 2, # 3, and # 4. Also, the identification information of the video / audio data is represented by # 1.

  Hereinafter, the operation of the video / audio recording / reproducing apparatus 15 according to the second embodiment will be described with reference to FIGS. 2 to 4 and FIGS. 6 to 8.

  First, when the recording reservation of the video / audio data is made in the device 1, the information indicating the recording reservation and the information indicating that the identification information of the video / audio data is # 1 are transmitted by the communication unit 6 to the other devices 2-4. The reservation information and the identification information of the video / audio data are shared by the devices 2 to 4.

  Next, the video / audio data of the identification information # 1 to be recorded is received by the receiving unit 1 of each of the devices 1 to 4, and the recording / reproducing unit 3 starts recording the video / audio data on the recording medium. At this time, in each of the devices 1 to 4, the identification information # 1 to # 4 of the recording medium and information indicating the reception sensitivity are acquired simultaneously.

  Here, as illustrated in FIG. 3, in each of the devices 1 to 4, the reception state changes from the non-reception state to the reception state. Therefore, as shown in FIG. 6, in step S501, a chapter is set by the chapter setting unit 5 of each device 1 to 4, and the process proceeds to the subsequent step S502.

  Specifically, as shown in FIG. 8, the device 1 has Chap1-1 (recording medium # 1, video / audio identification information # 1, recording start 00:00), and the device 2 has Chap2-1 (recording medium # 2, video). Audio identification information # 1, recording start 00:00), apparatus 3 Chap3-1 (recording medium # 3, video / audio identification information # 1, recording start 00:00), apparatus 4 Chap4-1 (recording medium # 4) , Video / audio identification information # 1, recording start 00:00) is set. As for the reception sensitivity data in each chapter, the device 1 receives from the non-reception state “level 0” to the receivable state “level 2”, the device 2 from the non-reception state “level 0” to the normal state “level 3”, and the device 3 Is changed from the unreceived state “level 0” to the normal state “level 3”, and the device 4 is changed from the unreceived state “level 0” to the normal state “level 3”.

  In step S502, the recording / playback unit 3 records the video / audio data on the recording medium, while the chapter setting unit 8 records the reception sensitivity, the video / audio data identification information, and the video / audio data recorded by the devices 1 to 4. The identification information and the recording section are recorded in the chapter storage unit 9, and the process proceeds to step S503.

  In step S503, it is determined whether or not the recording operation by the recording / reproducing unit 3 is to be continued. If “YES” at step S503, the process branches to step S504. If the determination in step S503 is “NO”, the recording process ends.

  In step S504, it is determined whether the reception state has changed in each of the devices 1 to 4. If “YES” at step S504, the process branches to step S502, and the chapter data is recorded together with the video / audio data again. If the determination in step S504 is “NO”, the process ends.

Specifically, as shown in FIG. 3 and FIG. 8, the device 1 is in the reception enabled state “level 2” from the reception disabled state “level 1”, and the devices 2 and 3 are in the normal state “level 3” from the reception disabled state “level”. It has changed to 1 ”. Then, Chap1-2 is set for the device 1, Chap2-2 is set for the device 2, and Chap3-2 is set for the device 3. As a result, Chap1-1 (recording section 00: 00-00: 12) is used for apparatus 1, Chap2-1 (recording section 00: 00-00: 28) is used for apparatus 2, and Chap3-1 (recording section 00:00:28 is used for apparatus 3). The recording section of 00-00: 18)) is confirmed.
The chapter data updated in this way and newly added chapter data are updated and recorded in the chapter storage unit 9 by the chapter setting unit 8.

  Although the following description is omitted, as shown in FIGS. 3 and 5, the chapter information is updated and determined according to the change in reception sensitivity, and a new chapter is set.

  The chapters set as shown in FIGS. 3 and 8 are shared among the devices 1 to 4 by the communication unit 6. As a result, for example, Chap1-2 and Chap1-4 video / audio data with poor reception sensitivity in the device 1 share the information of Chap1-2 and Chap1-4 with the recorded content of the video / audio data in the device 4 By skipping the recording sections 00: 18-00: 22 and 00: 42-00: 50, the video and audio data that could not be recorded because the device 1 was in a reception-disabled state can be easily reproduced. Can be confirmed.

  As described above, according to the video / audio recording / reproducing system 20 and the video / audio recording / reproducing apparatus 15 according to the second embodiment of the present invention, the chapter information generated based on the change in the reception sensitivity is shared using the communication unit 6. By doing so, video / audio data that could not be recorded because the reception was disabled in a certain device can be easily confirmed on the device having good reception sensitivity.

  Moreover, since chapter information etc. are memorize | stored in the chapter memory | storage part 9 of each apparatus 1-4, the time which uses a chapter can be shortened compared with the case where it memorize | stores in the recording medium.

  In the second embodiment, after recording is started, even if the video / audio data is in the reception disabled state (level 1) shown in FIG. 4, chapters are generated, and video / audio data that is actually meaningless data is generated. Although it has been described that the operation is performed in such a manner that the recording is continued, the recording may be controlled not to be recorded on the recording medium. Thus, by not recording video / audio data that cannot be reproduced as video or audio at the time of reproduction, or chapters related thereto, on the recording medium, the recording capacity of the chapter storage unit 9 required for chapter selection and chapter storage at the time of reproduction is reduced. Improvement is possible.

  Further, in the second embodiment, the configuration in which the devices 1 to 4 are provided with the chapter storage unit 9 has been described. However, by sharing the chapter storage unit 9 of a certain device among the devices 1 to 4, The storage capacity required for storing chapters can be further reduced without impairing convenience.

  As described above, the present invention provides a highly practical effect of being able to reproduce video and audio data that could not be recorded due to poor reception sensitivity, and is therefore extremely useful and industrially applicable. Is expensive.

1 is a block diagram showing a configuration of a video / audio recording / reproducing apparatus according to Embodiment 1 of the present invention. FIG. 1 is a block diagram showing a configuration of a video / audio recording / reproducing system according to Embodiment 1. FIG. It is a schematic diagram which shows the recording state of the video / audio data and chapter data which were recorded by each apparatus when video / audio data was received using four video / audio recording / reproducing apparatuses. It is a figure which shows the relationship between the level of the receiving state acquired by the receiving state acquisition part, and the propriety of recording in each receiving state. It is a figure which shows the data content of the chapter data of this Embodiment 1. It is a flowchart figure which shows the control procedure performed in a control part. It is a block diagram which shows the structure of the video / audio recording / reproducing apparatus which concerns on this Embodiment 2. It is a figure which shows the data content of the chapter data of this Embodiment 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reception part 2 Data processing part 3 Recording / reproducing part 4 Reception state acquisition part 5 Chapter setting part 6 Communication part 7 Control part 8 Chapter setting part 9 Chapter memory | storage part 10 Video / audio recording / reproducing apparatus 15 Video / audio recording / reproducing apparatus 20 Video / audio recording Playback system

Claims (6)

A video / audio recording / reproducing system for performing communication and data exchange with each other using a plurality of video / audio recording / reproducing apparatuses,
The video / audio recording / reproducing apparatus comprises:
Receiving means for receiving video and audio data of digital broadcasting;
A reception state acquisition unit that acquires information indicating a reception state of the video and audio data in the reception unit;
Recording / reproducing means for reproducing the recorded video / audio data while recording the received video / audio data on a recording medium;
Chapter setting means for setting a chapter for reproduction from a specific position on the video / audio data recorded on the recording medium and recording the chapter on the recording medium;
Communication means for performing communication and data exchange with other video / audio recording / reproducing devices;
When recording of video / audio data is started by one of the plurality of video / audio recording / reproducing devices, recording of the same video / audio data is started by another video / audio recording / reproducing device, while recording of the video / audio data is started. Control means for setting a chapter at the changed position when one of a plurality of video / audio recording / reproducing devices changes, and controlling the sharing of the chapter information among the devices. A video / audio recording / reproducing system characterized by that. In claim 1,
The video and audio recording / reproducing system, wherein the chapter setting means is configured to record information indicating reception sensitivity together with chapter data on the recording medium when the chapter is set. In claim 1 or 2,
Comprising chapter storage means for storing video / audio data recording medium information, video / audio data identification information, and chapter data;
The video / audio recording / reproducing system, wherein the chapter setting unit is configured to record chapter data in the chapter storage unit when the chapter is set. In claim 1 or 2,
It comprises chapter storage means for storing identification information for identifying a plurality of video / audio recording / reproducing devices, video / audio data recording medium information, video / audio data identification information, and chapter data,
The video / audio recording / reproducing system, wherein the chapter setting unit is configured to record chapter data in the chapter storage unit when the chapter is set. In any one of Claims 2 thru | or 4,
The video / audio recording / reproducing system is characterized in that the chapter setting means is configured not to perform chapter setting when reception sensitivity is poor.   6. A video / audio recording / reproducing apparatus used in the video / audio recording / reproducing system according to claim 1.

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