JP2007115343A - Reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reproducing device capable of efficiently using the recording area of a recording medium, in the reproducing device for reproducing video and audio on the basis of a reproduction data recorded in the recording medium such as a hard disk and a DVD. <P>SOLUTION: The reproducing device 1 reproduces the video and the audio on the basis of the reproduction data recorded in the recording medium 10, and erases the reproduced data after reproduction to save it in a volatile recording means 13. The reproduced data saved in the volatile recording means 13 can be returned to the recording medium 10 when a predetermine operation is carried out, and is erased from the volatile recording means 13 when a predetermined erasure condition is satisfied. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a playback device that plays back video and / or audio based on playback data recorded on a recording medium such as a hard disk, and more particularly to a playback device that can efficiently use a recording area of a recording medium.

  Hard disk, DVD (Digital Versatile Disc), hard disk recorder for reproducing video and audio based on reproduction data such as video data and audio data recorded on a recording medium such as a semiconductor memory, DVD player, various recording / reproducing devices, etc. Reproducing devices are widespread. Since reproduced data recorded on a recording medium generally has a large amount of data, there is a universal problem to efficiently use the recording area of the recording medium.

For example, Patent Document 1 describes a method of efficiently using a recording area by periodically overwriting a broadcast program.
Japanese Patent Laid-Open No. 2004-213834

  However, in order to efficiently use the recording area of the recording medium, it is necessary to complete the playback and erase the playback data that is no longer needed. There are various problems with the operation. Since Patent Document 1 is intended only for periodically repeated broadcast programs, it cannot be applied to other than broadcast programs that are periodically repeated.

  The present invention has been made in view of such circumstances, and by automatically deleting the reproduced data that has been reproduced from the recording medium, there is no problem with operability, and recording without limiting the applied reproduction data. An object of the present invention is to provide a playback apparatus that can efficiently use a recording area of a medium.

  The reproduction apparatus according to the present invention is a reproduction apparatus that reproduces video and / or audio based on reproduction data recorded on a recording medium capable of erasing the recorded data, and reproduction based on the reproduction data is completed. In this case, it is characterized in that it comprises erasure means for erasing reproduced data after reproduction from the recording medium.

  In the present invention, it is possible to efficiently use the recording area of the recording medium.

  The reproducing apparatus according to the present invention further includes a saving recording means for saving the reproduction data, and the erasing means is configured to erase the reproduction data after saving the reproducing data in the saving recording means. It is characterized by.

  In the present invention, the reproduction data erased from the recording medium is not completely deleted, but can be restored as needed by saving it in the recording means.

  The playback apparatus according to the present invention includes a means for receiving an operation for returning the playback data saved in the recording means to the recording medium, and a playback data saved in the recording means based on the received operation is returned to the recording medium. And a means for causing the above to occur.

  In the present invention, since the reproduction data can be restored when the user performs a predetermined operation, the reproduction data to be recorded can be re-recorded on the recording medium and stored by the user's intention. is there.

  The reproducing apparatus according to the present invention further comprises means for erasing the reproduced data saved in the recording means when a predetermined erasing condition is satisfied.

  In the present invention, it is possible to efficiently use the recording area of the recording means by deleting the saved reproduction data.

  In the reproducing apparatus according to the present invention, the erasing condition is a change in its operating state, an elapsed time after evacuation, a data amount of evacuated reproduction data, or reproduction of other reproduction data.

  In the present invention, when the erasure condition is satisfied, the reproduction data can be automatically erased without performing a specific operation by the user.

  In the playback apparatus according to the present invention, the playback data includes a plurality of unit playback data that are played back continuously, and the erasing unit is configured to delete the played back unit playback data. Features.

  In the present invention, since the reproduction data is erased from the reproduced position, the recording area of the recording means can be used efficiently.

  The reproduction apparatus of the present invention reproduces video and / or audio based on reproduction data recorded on a recording medium such as a hard disk, erases the reproduced data after reproduction from the recording medium, and saves it in a recording means. The reproduction data saved in the recording means can be restored to the recording medium when a predetermined operation is performed, and the reproduction data is erased from the recording means when a predetermined erasing condition is satisfied.

  With this configuration, the reproduction data after reproduction is automatically erased according to the present invention, so that an excellent effect is achieved such that the recording capacity of the recording medium can be used efficiently. Moreover, since no operation is required for erasing the reproduction data, there is no problem with operability, and the present invention can be applied to reproduction data other than broadcast programs that are periodically broadcast repeatedly.

  In addition, the present invention has an excellent effect such that it is possible to restore the reproduction data erased from the recording medium as needed.

  Furthermore, in the present invention, it is possible to protect the copyrighted work by limiting the number of reproductions based on the reproduction data recorded on the recording medium by erasing the reproduction data that has been reproduced. Play.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a block diagram showing a configuration example of a playback apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a playback device such as a hard disk recorder or a DVD player. The playback device 1 includes a recording medium 10 such as a built-in or removable hard disk or DVD, and is recorded on the recording medium 10. Video and audio are played back based on the data. Note that the playback device 1 may be a portable device such as a digital video camera or an IC recorder, and the recording medium 10 may be a medium such as a semiconductor memory used in the portable device.

  The reproduction apparatus 1 includes a control unit 11 such as a CPU (Central Processing Unit) that controls the entire apparatus, a non-volatile recording unit 12 that records various programs and data required for the control of the control unit 11, and a DRAM used for saving reproduction data The volatile recording means 13 such as the above, the access means 14 for accessing the recording medium 10 to read, write and erase the reproduction data on the recording medium 10, and the display means 15 for outputting a video based on the reproduction data read by the access means 14. And an audio output means 16 for outputting audio, an operation means 17 for receiving various operations by the user, and an acquisition means 18 for acquiring a sound and video for recording reproduction data on the recording medium 10 such as a tuner, a microphone, a camera, a connector, etc. I have.

  The recording medium 10 has a recording area where data can be recorded and erased. Each recording position in the recording area is assigned an address, and the recorded data can be specified by the address. The reproduction data recorded on the recording medium 10 includes a plurality of unit reproduction data used for reproduction for several milliseconds, and the unit reproduction data is continuously reproduced in a predetermined order so that the video is reproduced. And audio are played back.

  Next, various processes of the playback apparatus 1 of the present invention will be described. The playback apparatus 1 described below operates in an automatic erasure mode that is one of the functions of the playback apparatus of the present invention. FIG. 2 is a flowchart showing an example of the reproduction process of the reproduction apparatus 1 of the present invention. The playback device 1 reads the playback data recorded on the recording medium 10 by the access unit 14 under the control of the control unit 11, plays back video and audio based on the read playback data (S101), and plays back after playback. The data and the address indicating the recording position of the recording medium 10 on which the reproduction data has been recorded are saved (recorded) in the volatile recording means 13 (S102). In step S102, the reproduction data is saved in units of unit reproduction data.

  FIG. 3 is a flowchart showing an example of the reproduction data erasing process of the reproduction apparatus 1 of the present invention. In the playback device 1 in which a playback stop event such as an operation to stop playback such as the stop of playback of playback data or the end of playback occurs, playback data erasure processing for deleting playback data on the recording medium 10 is executed. Under the control of the control means 11, the playback apparatus 1 detects the occurrence of a playback stop event of playback data, such as accepting an operation to stop playback and processing to end playback (S201), and is recorded and played back on the recording medium 10. Of the reproduced data, the reproduced data after reproduction is erased from the recording medium 10 (S202). In step S202, the reproduction data is erased in units of unit reproduction data for which reproduction has been completed. For this reason, when the reproduction is stopped halfway, the next reproduction is started from the point of time when the reproduction has already been performed. Note that the reproduction stop event may not be detected and may be deleted every time reproduction of the unit reproduction data is completed.

  FIG. 4 is a flowchart showing an example of the return process of the playback apparatus 1 of the present invention. A user operating the playback apparatus 1 can restore the playback data saved in the volatile recording unit 13 to the recording medium 10 by performing a predetermined operation. The playback device 1 receives an operation from the operation unit 17 under the control of the control unit 11 (S301), reads the playback data and address saved (recorded) in the volatile recording unit 13 based on the received operation (S302), The read reproduction data is returned (recorded) to the recording position of the recording medium 10 indicated by the read address (S303).

  FIG. 5 is a flowchart showing an example of the saved reproduction data erasing process of the reproduction apparatus 1 of the present invention. The reproduction apparatus 1 erases the reproduction data saved in the volatile recording unit 13 from the volatile recording unit 13 when the predetermined erasure condition is satisfied (S401) under the control of the control unit 11 (S402). The erasure condition in step S402 is, for example, when the own operating state changes such as mode switching or power supply stop, when the elapsed time after evacuation reaches a predetermined time, and the data amount of the evacuated reproduction data is predetermined. When the upper limit value is reached, there are conditions such as the start of reproduction of other reproduction data.

  In the above-described embodiment, the reproduction data is saved in the volatile recording means and erased from the recording medium. However, the present invention is not limited to this, and the saved data is erased without being saved in the volatile recording means. It is also possible to make it possible to easily restore data while reducing the amount of recorded data as an overwritable state rather than erasing from the recording medium, The reproduction data may be saved in a non-volatile recording means, and can be developed in various forms.

It is a block diagram which shows the structural example of the reproducing | regenerating apparatus of this invention. It is a flowchart which shows an example of the reproduction | regeneration processing of the reproducing | regenerating apparatus of this invention. It is a flowchart which shows an example of the reproduction | regeneration data erasing process of the reproducing | regenerating apparatus of this invention. It is a flowchart which shows an example of the return process of the reproducing | regenerating apparatus of this invention. It is a flowchart which shows an example of the evacuation reproduction | regeneration data erasing process of the reproducing | regenerating apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Playback apparatus 10 Recording medium 13 Volatile recording means

Claims (6)

In a reproducing apparatus for reproducing video and / or audio based on reproduction data recorded on a recording medium capable of erasing recorded data,
A playback apparatus comprising: erase means for erasing playback data after playback from a recording medium when playback based on playback data is completed. It further comprises a recording means for saving the reproduction data,
2. The reproducing apparatus according to claim 1, wherein the erasing unit is configured to erase the reproduction data after evacuating the data to the recording unit for evacuation. Means for accepting an operation of returning the reproduction data saved in the recording means to the recording medium;
The reproducing apparatus according to claim 2, further comprising: means for returning the reproduction data saved in the recording means to the recording medium based on an accepted operation.   4. The reproducing apparatus according to claim 2, further comprising means for erasing the reproduced data saved in the recording means when a predetermined erasing condition is satisfied.   5. The reproducing apparatus according to claim 4, wherein the erasing condition is a change in its own operating state, an elapsed time after evacuation, a data amount of evacuated reproduction data, or reproduction of other reproduction data. The reproduction data includes a plurality of unit reproduction data to be reproduced continuously,
The playback device according to any one of claims 1 to 5, wherein the erasing unit is configured to erase the reproduced unit playback data.

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