JP2007234089A - Recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device in which the degree of freedom is high and CM skip can be performed accurately. <P>SOLUTION: Marks are recorded in a recording medium in a CM management file creation part 5 at a start point and a finish point of CM determined by an input voice determination part 3. The CM management file creation part 5 has an editorial function, displays an image and a voice reproduced from the recording medium 6 on a monitor TV 11, while it reproduces marks of the start point and the finish point of CM, and displays the reproduction mark information on the monitor TV 11. An error between the actual start point and the finish point of CM and positions of marks indicating them can be confirmed based on the displayed image and mark display, the marks are edited and recorded at an accurate positions of the start point and the finish point of CM using the editorial function provided by the CM management file making part 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus, and more particularly to a recording / reproducing apparatus that skips a commercial message (hereinafter referred to as CM) when a change in sound or a screen changes when a television broadcast program is recorded on a recording medium.

  Some recording and playback devices that record and play back television broadcast programs on recording media automatically detect the change in screen, change in sound, silence, etc. during recording, and automatically create the CM section of the program. Some programs are equipped with a function (CM skip) for skipping a CM section of a program and reproducing only the main part when the recorded program is reproduced (see, for example, Patent Documents 1 and 2).

  As a specific method of distinguishing between the CM section and the change point of the main part, a method in which the screen mute part is regarded as the change point, and the received audio signal mode (monaural, stereo, bilingual) is stereo in the CM part. There are a method of considering a change point using broadcasting in an audio mode, a method of considering a portion where silence is continued, and the like.

  For example, in the conventional recording / reproducing apparatus described in Patent Document 1, when video / audio data of a television broadcast program is compressed and encoded by a moving picture experts group (MPEG) encoder and recorded on a recording medium, 2 of the audio data is recorded. The stereo broadcast portion in the multilingual broadcast is determined to be a CM, and a code for identifying the CM instead of the main part is added to the compressed encoded data and recorded on the recording medium. When reproducing the compressed encoded data recorded on the recording medium, the above-mentioned code is identified, the compressed encoded data portion to which the code indicating CM is added is skipped, and the other compressed encoded data is MPEG encoded. The data is supplied to the decoder for decoding.

  Moreover, in the conventional recording / reproducing apparatus described in Patent Document 2, the CM part broadcast together with the main part of the program is recorded on a recording medium and detected at the time of reproduction, regardless of the audio mode of the program broadcast on television. On the basis of the program mode information that is the CM section, the CM section is skipped for playback. For example, a video signal and an audio signal of a television broadcast program are recorded on a recording medium as is with an audio mode signal received at the same time as the program, and then the audio mode signal is reproduced to continue the audio mode signal. By identifying the CM part of the recorded program by examining the time, skipping the reproduction of the program information of the specified CM part and playing only the main part, the main part and the CM part have the same audio Even if it is received in the mode, only the main part can be reproduced almost accurately.

JP 2000-11488 A JP 2001-320684 A

  However, in each of the recording / reproducing apparatuses described in Patent Documents 1 and 2, the CM section (CM section) is mainly automatically identified and created by the apparatus. In some cases, the CM section cannot be identified, and the CM section cannot be created because the CM section and the change point of the main part cannot be recognized, or the position is not correct due to a time lag with the recording while the change point is detected.

  In addition, a portion that cannot be determined as a CM section at the time of recording cannot be determined as a CM section at the time of playback, so automatic CM skip cannot be performed, and it is necessary to execute CM skip by user operation during playback.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a recording / reproducing apparatus having a higher degree of freedom and capable of performing CM skip accurately.

  In order to achieve the above object, the present invention is a recording / reproducing apparatus having a CM skip function for recording a television broadcast program composed of video and audio signals on a recording medium and reproducing only the main part excluding the commercial part from the program. In addition, the CM detection means for detecting whether the content of the television broadcast program being selected and received is commercial or the main part, and the detection result of the CM detection means together with the television broadcast program being selected and received Based on this, the recording means for recording the information indicating the start and end points of the commercial on the recording medium, the reproducing means for selecting and reproducing the television broadcast program recorded on the recording medium, and the reproducing means reproduce the information. CM position detecting means for detecting information indicating a commercial start point and end point from television broadcast program information, and CM position detecting means CM skip means for reproducing and outputting only the main part excluding the commercial portion in the television broadcast program information reproduced by the reproduction means based on the information indicating the commercial start point and end point detected by the reproduction means, and recording means And editing means for processing and recording information indicating a commercial start point and end point in correspondence with the television broadcast program recorded on the recording medium.

  In the present invention, since the editing means is provided, even if information indicating the commercial start point and end point is automatically recorded on the recording medium based on the detection result of the CM detection means, Information indicating the start and end points of commercials can be corrected and deleted.

  In order to achieve the above object, the present invention further includes CM skip function setting means for setting the operation or non-operation of the CM skip function, and the CM skip function setting means is set when the operation of the CM skip function is set. Only the main part excluding the commercial part in the television broadcast program information reproduced by the reproduction means by operating the CM skip means is reproduced and output, and when the CM skip function is inactive, the CM skip means is inactive. The television broadcast program being played back by the playback means is played back including the commercial part.

  In order to achieve the above object, the present invention provides a function for editing information indicating a commercial start point and end point recorded on a recording medium and a position for skipping to an arbitrary position on the recording medium. It has a function of newly recording information indicating whether or not. According to the present invention, it is possible to newly record a television broadcast program recorded on a recording medium even if information indicating the start point and end point of the commercial is not recorded. Even in the non-existing portion, it is possible to newly record information indicating a skip position.

  According to the present invention, even if information indicating the commercial start point and end point is automatically recorded on the recording medium by the editing unit based on the detection result of the CM detection unit, Since the information indicating the commercial start point and end point can be corrected and deleted, the degree of freedom is higher and the CM skip can be performed accurately.

  Further, according to the present invention, information indicating that the position is to be skipped to an arbitrary position can be newly recorded by the editing means, so that, for example, a scene that is not desired to be viewed can be skipped.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a recording / reproducing apparatus according to the present invention. The recording / reproducing apparatus according to the present embodiment receives a television broadcast signal and generates compressed encoded data of a video signal and an audio signal of a program of a desired broadcast station, and a program of the desired broadcast station The recording / reproducing unit 13 records and reproduces the compression-encoded data on the recording medium 6, and the decoder unit 14 decodes the video signal and audio signal reproduced by the recording / reproducing unit 13 for reproducing and outputting to the monitor TV 11. Is done.

  The encoder unit 12 performs video detection and audio detection on a television broadcast signal via an antenna to output a video signal and an audio signal of a program of a desired broadcast station, and an analog output from the TV tuner 1 An A / D converter 2 that converts a video signal and an audio signal, which are signals, into a digital signal, and an input for determining whether the received television broadcast program is a commercial or a main part based on the received audio signal The audio determination unit 3 and an MPEG-2 encoder 4 that converts a signal output from the A / D converter 2 into a moving picture expert group (MPEG) 2 format bit stream.

  The recording / reproducing unit 13 records the bit stream data supplied from the encoder unit 12 on the recording medium 6 in a form conforming to the format of the recording medium 6 and creates a CM skip management file for generating information for performing the CM skip. The creation unit 5, the bit stream recorded on the recording medium 6, is reproduced and supplied to the decoder unit 14, and the CM skip determination unit 7 that determines the CM portion and skips the CM, and the CM skip is activated or deactivated. And a CM skip setting unit 8 that determines whether or not to perform. The recording medium 6 is suitably a medium that can be randomly accessed, such as a hard disk or a recording-compatible optical disk.

  In the recording / reproducing unit 13, the decoder unit 14 decodes the MPEG-2 bit stream reproduced from the recording medium 6, and the digital video signal and the digital audio signal decoded by the MPEG-2 decoder 9. An analog signal related to video and audio is output to the monitor TV 11 and displayed based on the information obtained by the CM skip determination unit 7.

  Next, a CM skip algorithm will be described. The input sound determination unit 3 uses a conventionally known determination method for setting a point of time when the input sound signal is changed to stereo sound among the monaural sound, stereo sound, and bilingual sound as the start point of the CM. Use. Conversely, when the input audio signal changes from stereo audio to monaural audio or bilingual audio, it is determined as the CM end point.

  In addition, the input audio determination unit 3 also considers the occurrence of a CM start change point in consideration of the occurrence of a broadcast station that does not have a CM broadcast or between programs with different change points. When a change point does not appear, it is not regarded as a CM section. Furthermore, by recording marks at the start and end points of the CM determined by the input sound determination unit 3, position information can be grasped during reproduction. These marks are stored as a management file different from the stream information of the program by the CM management file creation unit 5 and appropriately recorded in a user data area different from the bit stream of the recording medium 6 during program recording.

  In the CM skip according to the present embodiment, when the CM skip setting unit 8 sets the CM skip determination unit 7 to perform the CM skip, the CM skip determination unit 7 reads the CM start point reproduced from the recording medium 6. The MPEG-2 bit stream reproduced from the recording medium 6 is detected between the detected first mark and the second mark recorded between the first mark and the second mark recorded at the CM end point. The decoder unit 14 that decodes the signal is skipped without outputting the reproduced image signal and the reproduced audio signal. Therefore, only the image and sound of the main program are reproduced and displayed on the monitor TV 11 as if the CM section was not recorded.

  When the CM skip determination unit 7 performs the CM skip control, if the playback has been performed and the CM start point indicated by the management file has been reached, the next mark is searched and the mark is displayed. Only when the end point of the CM is indicated, the interval between the CM start point and the CM end point indicated by the next mark searched for is determined as a CM section and skipped. The work of confirming the pair of marks is to exclude the case where the CM section is partially deleted by the user's editing work or the like.

  On the other hand, when the CM skip setting unit 8 sets the CM skip determination unit 7 so as not to perform the CM skip, the CM skip determination unit 7 is inactivated, and the playback reproduced from the recording medium 6 from the decoder unit 14 is performed. The image signal and the reproduced audio signal are reproduced as they are including not only the main part but also the CM section. Therefore, the CM skip setting unit 8 allows the user to arbitrarily view and skip the CM section.

  Next, each example of the CM start point and CM end point setting method according to this embodiment will be described in more detail. In the first example of the setting method, the input voice determination unit 3 determines the CM as a CM and records it as a CM section. However, in order to improve the voice lag and recording time lag and the quality of CM skip, it is larger than the CM itself. This is a case where a CM start point and a CM end point are set.

  That is, as shown in FIG. 3, when recording is performed on the recording medium 6 in the order of the main audio program segment 21, the stereo audio CM segment 22, and the monaural audio main program segment 23 in this order. The start point 41a indicates a position in the main program section 21 before the actual start point of the CM section 22, and the recorded CM end point 41b is a main program further after the actual end point of the CM section 22. This is a case where a position in the section 23 is indicated.

  In this case, as shown in FIG. 3, there is an error between the original CM section 22 and the recorded CM section from the CM start point 41a to the CM end point 41b. Conventionally, since the apparatus automatically records, there is no method other than reproduction based on the information (CM start point 41a, CM end point 41b). However, in the present embodiment, as shown in FIG. 3, even if the apparatus records the CM start point 41a and the CM end point 41b, the CM mark can be edited even for the completed program. 2 and the CM section recorded by the apparatus are in the positional relationship as shown in FIG.

  That is, the CM management file creation unit 5 in FIG. 1 has an editing function, reproduces the recording medium 6 recorded as shown in FIG. 3, and decodes the MPEG-2 bit stream reproduced from the recording medium 6 as a decoder unit. 14 is decoded and output to the monitor TV 11 to display an image and sound, and the mark of the CM start point 41 a and the mark of the CM end point 41 b are reproduced, and the reproduction mark information is displayed on the monitor TV 11.

  Thus, the user can confirm the actual CM start point and end point and the mark position error indicating them based on the display image or mark display on the monitor TV 11. Using the editing functions such as “Create new CM”, “Move CM”, and “Delete CM”, the mark of the CM start point 41a shown in FIG. In the section 22, a mark indicating the CM start point is newly recorded at the accurate CM start point 31a shown in FIG. 2, or the recording mark position of the CM start point 41a is moved to the position of the CM start point 31a.

  Similarly, the mark of the CM end point 41b shown in FIG. 3 is deleted, and a mark indicating the CM end point is newly recorded in the accurate CM end point 31b shown in FIG. The position of the recording mark 41b is moved to the position of the CM end point 31b. As a result, as shown in FIG. 2, marks are edited and recorded at the original CM start point 31a and CM end point 31b of the CM section 22. In FIG. 2, there is a CM section 24 subsequent to the main program section 23. In this CM section 24 as well, marks are edited and recorded at the original CM start point 32a and CM end point 32b of the CM section 24 in the same manner. Is done.

  Next, a second example of the setting method will be described. This second example is a case where the input voice determination unit 3 in FIG. 1 cannot recognize a change in voice and cannot determine a CM section. That is, as shown in FIG. 4, for example, the recording section 6 of the main part of the stereo sound, the CM section 52 of the stereo sound, and the program section 53 of the main part of the stereo sound are recorded on the recording medium 6 in this order. Since both CMs are stereo voices, the input voice determination unit 3 cannot recognize a change in voice and cannot determine a CM section, so the marks of the CM start point and CM end point are not recorded and the CM section is not automatically created.

  Even in this case, in this embodiment, the recording medium 6 recorded as shown in FIG. 4 is reproduced by the CM management file creation unit 5 having the editing function of FIG. The MPEG-2 bit stream is decoded by the decoder unit 14 and output to the monitor TV 11 to display images and sounds. In this case, however, the marks indicating the start point and end point of the CM are not recorded and are not displayed on the monitor TV 11.

  Based on the display image of the monitor TV 11, the user uses the editing function such as “Create new CM” provided in the CM management file creation unit 5 to newly indicate the CM start point while viewing the display image of the monitor TV 11. A mark and a mark indicating the CM end point are recorded at the start point and end point of the CM section 52. As described above, in the present embodiment, the CM management file creation unit 5 includes a recording medium in which the marks indicating the start and end points of the CM as shown in FIG. Since a mark indicating a CM start point and a mark indicating a CM end point can be newly recorded using an editing function such as “Create new CM”, a CM section having a positional relationship as shown in FIG. 2 can be generated. .

  The present invention is not limited to the above embodiment. For example, the editing function of the CM management file creation unit 5 is a mark indicating the commercial start point and end point shown in FIGS. Not only when correcting the recording position or recording a new one, but also in a part not related to commercials, a mark indicating that it is a position to skip corresponding to a scene that you do not want to watch is newly recorded In this case, scenes that you do not want to watch can be skipped. The recording / reproducing apparatus according to the present invention can be applied to all apparatuses that acquire program information and perform a recording / reproducing operation.

It is a block diagram of one embodiment of a recording / reproducing apparatus of the present invention. It is a figure which shows an example of the ideal positional relationship of the mark which distinguishes CM received from a different audio | voice mode, and a main part. It is a figure which shows an example in case the position of CM which is edit-recorded by this invention and received and recorded by the different audio | voice mode on a recording medium, and the actual recording position of the mark which distinguishes a main volume have shifted | deviated. It is a figure which shows an example of the positional relationship of CM position and the main part which are edited and recorded by this invention, and are received and recorded by the same audio | voice mode on a recording medium.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tuner 2 A / D converter 3 Input audio | voice determination part 4 MPEG-2 encoder 5 CM management file preparation part provided with the edit function 6 Recording medium 7 CM skip determination part 8 CM skip setting part 9 D / A converter 10 MPEG -2 Decoder 11 Monitor TV
12 Encoder unit 13 Recording / reproducing unit 14 Decoder unit

Claims (3)

In a recording / reproducing apparatus having a CM skip function for recording a television broadcast program composed of video and audio signals on a recording medium and reproducing only the main part excluding the commercial part from the program,
CM detecting means for detecting whether the contents of the television broadcast program being selected and received are commercial or main part;
Recording means for recording information indicating a commercial start point and end point on the recording medium based on the detection result of the CM detection means together with the television broadcast program being selected and received;
Reproducing means for selecting and reproducing the television broadcast program recorded on the recording medium;
CM position detection means for detecting information indicating the start point and end point of the commercial from the television broadcast program information being reproduced by the reproduction means;
Based on the information indicating the commercial start and end points detected by the CM position detecting means, only the main part excluding the commercial portion in the television broadcast program information being reproduced by the reproducing means is reproduced and output. CM skip means to perform,
A recording / reproducing apparatus comprising: editing means for processing and recording information indicating a start point and an end point of the commercial in association with the television broadcast program recorded on the recording medium by the recording means.   CM skip function setting means for setting operation or non-operation of the CM skip function is further included, and the CM skip function setting means operates the CM skip means to set the playback means when setting the operation of the CM skip function. Only the main part excluding the commercial part in the television broadcast program information being played back is reproduced and output, and when the CM skip function is inactive, the CM skip means is inactivated and played back by the playback means. 2. The recording / reproducing apparatus according to claim 1, wherein the television broadcast program is reproduced including a commercial part. The editing means includes a function for editing information indicating the start point and end point of the commercial recorded on the recording medium, and information indicating whether or not the position is skipped to an arbitrary position on the recording medium. 2. The recording / reproducing apparatus according to claim 1, further comprising a new recording function.

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