JP2008310863A - Video recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the amount of access to a medium holding a content increases because the processing of reading (moving) data and simultaneously erasing (writing) a source file is required for preventing the same content from being left in a duplex manner when moving the content with copy control. <P>SOLUTION: A video recording and reproducing device including a function of moving a recording content includes a storage part regularly storing a move position when executing the move and reproducing position correction part capable of performing correction such that reproduction is not allowed at the location subjected to the move on the basis of the move position information. Accordingly, it is not required to always erase the content simultaneously with the move operation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a moving device of a recording / playback device, and more particularly to a recording / playback device capable of reducing the amount of access to a recording medium when performing a content moving function.

  In recent years when digital recording has become common, the content recording function and the copyright problem are one of the problems that cannot be separated. Since digital recording does not cause image quality degradation due to copying, a copyright protection mechanism called copy control is provided.

  For example, a recording / playback device with a built-in HDD (hard disk) uses a function called “move” to copy content accumulated in the HDD to another device or another medium. It becomes a move. Here, “move” refers to an operation and a function for copying content to another device, another medium, etc., and erasing the content of the copy source.

In order to perform this function called “Move” in order to ensure that copyright does not occur and to ensure that content is not duplicated, it is common to erase the content while playing it. A method of deleting a file by dividing it into small files in advance, or a method of creating a plurality of files and reproducing only one has been used.
JP 2002-300517 A JP 2005-352642 A

  However, the above-described method increases the number of write (erase) accesses to the HDD as compared with simple copying. In recent recording / playback apparatuses, it is necessary to simultaneously perform recording and playback on the HDD while moving, and there is a problem that the amount of access to the HDD increases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a recording / playback apparatus for ensuring copy control without increasing the amount of access to an HDD.

  The recording / playback apparatus of the present invention shows a content recording medium for recording content, a receiving means for receiving a television signal, a recording means for recording the television signal received by the receiving means on the content recording medium as recorded content, and the content Move position information storage means for storing move position information comprising information and information indicating the reproduction position of the content, and based on the move position information stored in the move position information storage means, the recorded content recorded on the content recording medium Playback position correcting means for determining the playback position, playback means for playing back the recorded content from the playback position of the recorded content determined by the playback position correcting means, moving the recorded content recorded on the content recording medium, and starting the move Until the move is completed, the data stored in the move position information storage means Characterized in that a move means for updating the blanking position information periodically.

  The present invention eliminates the need for the process of erasing the original data at the same time as the content is moved by using the move position information indicating how far the content has been moved, that is, the amount of access to the recording medium of the content. It will have the effect of reducing.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a recording / playback apparatus according to an embodiment of the present invention.

  In FIG. 1, the recording / playback apparatus records a television signal received by a receiving unit 110, a recording unit 130 for recording a television signal on a content recording medium 160, and a television signal received by the receiving unit 110 as content. A recording medium 160, a reproducing means 140 for reproducing the recorded content recorded on the content recording medium 160, a moving means 150 for moving the recorded content recorded on the content recording medium 160, and a move A move position information storage unit 170 that holds the move position during (dubbing), a reproduction position correction unit 180 that corrects a reproduction position based on information from the move position information storage unit 170, and a reception unit 110 or a reproduction unit 140 Video that decodes output and outputs as video signal / audio signal It consists audio decoding unit 120.

  The operation of the recording / playback apparatus according to the embodiment of the present invention configured as described above will be described.

  The television signal received by the receiving unit 110 is recorded on the content recording medium 160 by the recording unit 130. Of the content recorded on the content recording medium 160, when reproducing content that is not subjected to copy control or content that has not been moved (dubbed), the reproducing unit 140 passes the content recording medium through the reproduction position correcting unit 180. The content data is read from 160 and converted into a video signal and an audio signal by the video / audio decoding means 120. At this time, the reproduction position correcting means 180 reproduces the content from the beginning of the content or from the reproduction position desired by the user without correcting the reproduction position.

  Next, a case where specific content existing on the content recording medium is moved to another device or another medium will be described. The mover 150 reads the content data from the content recording medium 160 and outputs the content data from the content start position. At this time, in the case of content subjected to copy control, move position information indicating how far the move has been executed (content data is output) is stored in the move position information storage unit 170. The move position information includes information indicating the content and information indicating the reproduction position of the content. The information indicating the playback position of the content may be, for example, the moved data size (bytes, etc.) of the content data, or data (hours / minutes / seconds) indicating the time from the start of the content. May be.

  The reproduction position correction means 180, when reproducing / moving the content having the move position information stored in the move position information storage means 170, displays the reproduction position and the move (dubbing) position at which the reproduction of the content is started. Forcibly set after the finished position.

  Next, operations at the time of movement and playback of the recording / playback apparatus of the present invention will be described with reference to the flowchart of FIG.

  First, the operation during the move will be described. When moving the content, the reproduction position correction unit 180 refers to the move position information stored in the move position information storage unit 170 and corrects the move start position (S201). Thereafter, the move is started, and the move position information indicating how far the move has been performed is continuously recorded from the start of the move to the end of the move (S202). The move position information is information that can specify the playback position of the content, and can be recorded in a completely different area from the recording medium that holds the content as long as it is clear which content the move position information is for. Is also possible. The recording interval of the move position information is preferably as short as possible. As an example of the recording interval, there is a notation that the content may be doubled if it is less than 1 minute in ARIB, so it can be considered to be less than 1 minute. If the move is completed for a content that has been moved without being moved halfway, such as when the user ends the move or the power is cut off, the move position information is deleted at the same time as the content is deleted. (S204). With the above operation, it is possible to prevent the copy-controlled content from being moved many times.

  Next, the operation during reproduction will be described.

  At the time of reproduction, first, it is determined whether or not the move position information relating to the content to be reproduced is stored in the move position information storage means 170 (S211). If there is no move position information related to the content to be played, playback is started from the beginning as normal content. On the other hand, if the move position information regarding the content to be reproduced exists, the reproduction position is advanced to the moved position (S212). Thereby, it is possible to prevent the content up to the moved location from being reproduced again.

  FIG. 3 shows specific examples of move position information, and two examples (A) and (B). (A) is a format in which a list having move position information corresponding to all contents is held as one data. In FIG. 3A, for example, the content represented by the content identification number 25 indicates that the move has been completed up to 10 minutes from the start of the content. (B) is that only the content for which the move position information exists has its content identification number as a file name, and the move position information is held in the content. In FIG. 3B, for example, the content represented by the content identification number 25 indicates that the move has been completed up to 10 minutes from the start of the content.

  FIG. 5 shows an example in which the contents during the move are shown to the user. When a list of contents recorded on the content recording medium 160 is displayed, a predetermined icon is displayed for the contents having the move position information, thereby informing the user that the contents cannot be reproduced from the beginning. .

  According to such a configuration, when moving the copy-controlled content, by using the move position information indicating how far the content has been moved, the content is moved to protect the content and at the same time the original data is deleted. There is no need. For this reason, when moving the copy-controlled content, the access amount of the content to the recording medium can be reduced.

(Embodiment 2)
FIG. 4 is a block diagram showing a configuration of a recording / playback apparatus according to another embodiment of the present invention.

  In FIG. 4, the recording / playback apparatus includes a receiving unit 210 that receives a television broadcast, a recording unit 230 that records a television signal on a content recording medium 260, and a content that records the television signal received by the receiving unit 210 as content. Recording medium 260, reproducing means 240 for reproducing the recorded content recorded on the content recording medium 260, moving means 250 for moving the recorded content recorded on the content recording medium 260, and the move position during the move (dubbing) Is stored based on the information from the move position information storage 270, the playback position is stored during playback based on information from the playback position information storage means 290, the move position information storage means 270, and the playback position information storage means 290. And reproduction position correction means 280 for correcting the position.

  The operation of the recording / playback apparatus according to the embodiment of the present invention configured as described above will be described. Since the operation of the move is the same as that of the first embodiment, the description thereof is omitted.

  Next, the operation during reproduction will be described. When playing back content that has undergone copy control, the playback position information storage means 290 stores the playback end position and playback position information indicating the content at the end of playback.

  The reproduction position correction unit 280 refers to the move position information stored in the move position information storage unit 270 and the reproduction position information stored in the reproduction position information storage unit 290. Then, more advanced position information is selected from the move position information and the reproduction position information, and is set as the reproduction / move start position.

  According to such a configuration, it is possible to reproduce the content in the middle of the move from the last reproduction position.

  The recording / playback apparatus of the present invention has an effect that it is possible to reduce the access amount to the recording medium when moving the recorded content subjected to copy control, and the functions of recording / playback / move can be performed simultaneously. This is useful in that the concentration of access to the recording medium can be avoided in realizing the device to be executed.

1 is a block diagram showing a configuration of a recording / playback apparatus according to Embodiment 1 of the present invention. The flowchart which shows the move of the recording / reproducing apparatus in Embodiment 1 of this invention, and a reproduction | regeneration processing procedure The figure which shows the example of a data structure which shows the move position information of the video recording / reproducing apparatus in Embodiment 1 of this invention The block diagram which shows the structure of the video recording / reproducing apparatus in Embodiment 2 of this invention. The figure which shows an example of the display interface to a user

Explanation of symbols

110 receiving means 120 video / audio decoding means 130 recording means 140 reproducing means 150 moving means 160 content recording medium 170 move position information storing means 180 reproducing position correcting means 210 receiving means 220 video / audio decoding means 230 recording means 240 reproducing means 250 move Means 260 Content recording medium 270 Move position information storage means 280 Playback position correction means 290 Playback position information storage means

Claims (2)

A content recording medium for recording content;
Receiving means for receiving a television signal;
Recording means for recording the television signal received by the receiving means on the content recording medium as recorded content;
Move position information storage means for storing move position information composed of information indicating content and information indicating the reproduction position of the content;
Reproduction position correction means for determining the reproduction position of the recorded content recorded on the content recording medium based on the move position information stored in the move position information storage means;
Playback means for playing back the recorded content from the playback position of the recorded content determined by the playback position correcting means;
Move means for moving the recorded content recorded on the content recording medium;
With
The recording / reproducing apparatus that periodically updates the move position information stored in the move position information storage means from the start of the move to the end of the move. Reproduction position information storage means for storing reproduction position information composed of information indicating content and information indicating a position where reproduction has ended,
The reproduction position correction means includes
Based on the move position information stored in the move position information storage means and the playback position information stored in the playback position information storage means, the playback position of the recorded content recorded on the content recording medium is determined. The recording / reproducing apparatus according to claim 1.

Images