JP2001309294A - Video signal reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily grasp contents without excessive operation because reproduction can be restarted from a good point to leave off. SOLUTION: A DVD reproducing unit 10 includes a controller 32, and processing is performed in accordance with an instruction input from an operation panel 36. For instance, when a reproducing instruction is input, the controller 32 performs reproducing processing. In addition, when the instruction of temporal stop is input during reproducing, the controller 32 performs temporal stop processing. When the reproducing instruction is input again, the controller 32 restarts reproducing processing. Concretely, in the case that a caption exists on a scene including a temporarily stopped time point, the controller 32 returns to the top position of the caption to restart the reproducing processing because characters speak. In the case that the caption does not exist on the scene including the temporarily stopped time point, the controller 32 restarts the reproducing processing from the temporarily stopped time point because the characters do not speak.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal reproducing apparatus, and more particularly to a video signal reproducing apparatus capable of reproducing a DVD-ROM on which a digital video signal of a DVD-Video system is recorded.

[0002]

2. Description of the Related Art In a conventional video signal reproducing apparatus of this type,
Insert the desired DVD-ROM (disc) into the device body,
For example, the user has watched a television receiver connected to a video signal reproducing apparatus and watched a movie or the like recorded on a disc. In addition, when the player sits down for a short while while watching a movie, the operator presses a pause button provided on an operation panel of the apparatus main body or a remote controller to pause the reproduction. Then, when resuming reproduction, the reproduction button was pressed.

[0003]

However, in this prior art, when the reproduction is resumed, the reproduction is resumed from the point where the reproduction was paused. It was difficult to understand the contents of the dialog when resuming playback. For this reason,
The operator has to return to the scene (scene) a little before and play back again, which is troublesome.

[0004] Therefore, a main object of the present invention is to provide a video signal reproducing apparatus capable of easily recognizing the contents when resuming reproduction without requiring any extra operation.

[0005]

SUMMARY OF THE INVENTION The present invention provides a video signal reproducing means for reproducing a video signal and a sub-video signal from a recording medium, a pause means for temporarily stopping reproduction, a resuming means for resuming reproduction from a pause, and A video signal reproducing apparatus comprising a determination unit that determines a restart position according to the presence or absence of a sub-video signal when playback is temporarily stopped by a pause unit when a restart unit is operated.

[0006]

In this video signal reproducing apparatus, the video signal reproducing means reproduces the video signal and the sub-video signal recorded on a recording medium such as a DVD-ROM. For example, DVD-RO
When a movie is recorded in M, a scene of the movie (scene) and subtitles corresponding to voices (dialogs) of characters appearing in the scene are displayed on a display device such as a television receiver. . The dialogue is output from a speaker of the television receiver. When the operator instructs to pause using an input device such as an operation panel of the apparatus main body or a remote control transmitter when the operator is in the middle, the reproduction is paused. Then, when the operator instructs the reproduction using the input device, the reproduction is restarted. At this time, the determining means determines the restart position according to the presence or absence of the sub-video signal.

More specifically, if there is a sub-picture signal, ie, subtitles, when the video is paused, the character is speaking, and when resuming reproduction, the deciding means determines the start of the scene with the subtitles. Determine the restart position in the position. Therefore, the dialogue can be heard from the beginning, so that the contents can be understood.

On the other hand, if there is no caption at the time of the pause, there is no line of the characters, and when the reproduction is resumed, the deciding means decides the pause position as the resume position. In addition, the timer counts the time during the pause, and when the first predetermined time has elapsed, the position returned by the second predetermined time is determined as the restart position, so that the user has been sitting for a relatively long time. Even in this case, the contents can be understood. If the position returned by the second predetermined time or more is a scene including subtitles, the content can be more understood by restarting the reproduction from the beginning of the scene.

The recording medium as described above includes DVD-V
A digital video signal is recorded in the video format.

[0010]

According to the present invention, when the speech is paused in a certain scene, the reproduction is resumed from the head position of the speech, so that the reproduction can be resumed from a place where the line is good. Therefore, the contents can be easily understood.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0012]

Referring to FIG. 1, a DVD reproducing apparatus 10 of this embodiment includes an optical pickup 14 for reproducing an RF signal from a DVD-Video disk (hereinafter, simply referred to as a "disk"). The RF signal reproduced by the optical pickup 14 is subjected to a waveform equalization process and a binarization process by an RF circuit 16. The reproduced data subjected to such processing is subjected to decoding processing such as data demodulation and error correction by the data decoder 18. The decoded reproduction data is sorted by the demultiplexer 20 into main video compression data, sub video compression data, and audio compression data. Then, the main video compression data is supplied to the video decoder 22, the sub video compression data is supplied to the sub video decoder 24, and the audio compression data is supplied to the audio decoder 26.

The video decoder 22 performs a decoding process on the compressed main video data and outputs decoded main video data. That is, the main video compression data is data compressed by the MPEG2 system, and the video decoder 22 performs different decoding processes on the I picture, the P picture, and the B picture to generate main video data. Then, the video decoder 22 supplies the generated main video data to the sub video decoder 24.

The sub-picture decoder 24 performs a decoding process on the sub-picture compressed data, and combines the decoded sub-picture data with the main picture data supplied from the video decoder 22. That is, the sub-picture decoder 24 combines a sub-picture such as a subtitle with the main picture. Thereby, video data including both the main video component and the sub video component is generated. In addition,
If there is no sub video data, the main video data is output as it is as video data.

The video data output from the sub video decoder 24 is supplied to an NTSC encoder 28. NTS
The C encoder 28 generates an NTSC composite video signal from the video data. That is, the digital video signal is converted into an analog video signal, and a sync signal or a color burst signal is added to the converted video signal to generate an NTSC composite video signal. This composite video signal is output to a television receiver (TV) not shown. Therefore, a desired image is displayed on a CRT monitor (not shown) of the TV.

The audio decoder 26 performs a decoding process on the compressed audio data and outputs the decoded audio data. The audio compressed data is also data compressed by the MPEG system or the like, and the audio decoder 26 performs a predetermined decompression process to generate audio data. The generated audio data is converted into an analog signal by the D / A conversion circuit 30, and then output to a TV or VTR. Therefore, audio accompanying the desired video is output from the speaker (not shown) of the TV.

Referring to FIG. 2, on disk 12, VO
Main video data, sub-video data, and audio data are managed in BS (Video Object Set) units. The VOBS is a unit of one movie or the like, for example, and the VOBS is composed of a plurality of VOBs (Video Objects). VOB
Is a unit in which each data is recorded as a group on the disk 12, and this VOB is composed of a plurality of cells. The cell is a unit of one scene or one cut in a movie, for example, and one cell is a time unit of several minutes to several tens minutes. In the DVD reproducing apparatus 10, for example, a format such as a multi-story in which one movie can be viewed in a plurality of story developments,
It has a function of skipping scenes that are not suitable for education, such as so-called parental lock, such as a violent scene, and such a function is created by a combination of cells. The Cell has a plurality of VOBUs (Video Ob
jectUnit). A VOBU is a unit of 0.4 to 1.2 seconds in a moving image, and includes a plurality of GOPs (Group Of Pictu
res).

The VOBU includes NV_PCK which is a pack having management information of the VOBU, V_PCK which is a pack having main video, A_PCK which is a pack having audio data, and S which is a pack having sub-video data.
P_PCK. This V_PCK,
A_PCK and SP_PCK are each recorded on the disk 12 after being compressed by the MPEG2 method or the like.

For example, SP_PCK as shown in FIG.
When a predetermined number (ji) are collected, one SPU (Sub Picture Unit) as shown in FIG. 3 is formed. SPU
Are SPUH (Sub Picture Unit Header), PXD (Pix
el Data) and SP_DCPT (Sub Picture_Control
Sequence Table). The SPUH is a header of the SPU and includes information on the size of the SPU and information on a table start address for a display control command sequence. PXD is 2-bit pixel data that constitutes a sub-picture (sub-picture). Further, SP_
DCSQT uses the display (T
V is a display sequence for starting / stopping the display of sub-pictures and changing attributes.

As shown in FIG. 3, the SP_DCSQT is a display sequence SP_DCSQ described in the order of execution.
# 0, SP_DCSQ # 1, SP_DCSQ # 2,. Further, as shown in FIG. 3, SP_DCSQ_STM, SP_NXT_D
CSQ_SA and multiple display control commands SP_DC
CMD # 1 to SP_DCCMD # n are included. SP_
DCSQ_STM indicates the start time of SP_DCSQ, and SP_NXT_DCSQ_SA indicates the next SP_DCSQ.
Indicates the head address of the SQ.

The display control command SP_DCCMD
In each of # 1 to SP_DCCMD # n, nine control commands as shown in FIG. 3 are described in one or a combination of two or more. In addition, for convenience of description, the drawings include all control commands.

First, FSTA_DSP is a command for forcibly setting the display start timing of pixel data. STA_DSP is a command for setting the display start timing of the pixel data. Furthermore, S
TP_DSP is a command for setting the display stop timing of the pixel data. Furthermore, SET_CO
LOR is a command for setting a color code of pixel data.

Subsequently, SET_CONTR is a command for setting the contrast between the pixel data and the main image. SET_DAREA is a command for setting a pixel data display area. In addition, SET_
DSPXA is a command for setting a display start address of pixel data. Furthermore, CHG_COCO
N is a command for setting a change in color and contrast of pixel data. CMD_END is a command indicating the end of the display control command.

The control of the pixel data is executed by these various commands. That is, the display of the sub-picture (sub-picture) is controlled.

Returning to FIG. 1, the operator operates the operation panel 3
When the play button 36a provided on the player 6 is operated, a play instruction is input to the controller 32, and the controller 32 starts a play process. The operator operates the operation panel 3
When the stop button 36b provided on the controller 6 is operated, the controller 32 executes a reproduction end process in response to the operation.

During playback, the operator operates the operation panel 36.
When the provided fast-forward button 36c is operated, the controller 32 executes fast-forward playback processing in response to the operation.
A rewind button 36 provided on the operation panel 36
When d is operated, the controller 32 executes a rewind reproduction process in response to the operation. Further, when the operator sits down for a short period of time, the pause button 36e provided on the operation panel 36 is operated, and the controller 32 executes a pause process in response to the operation. Specifically, the controller 32 disables the video decoder 22, the sub-picture decoder 24, and the audio decoder 26. Therefore, the still image at the time when the pause is instructed is displayed on the TV monitor, and the sound output is also interrupted.
Then, when the operator inputs a reproduction instruction using, for example, the reproduction button 36a, the controller 32 restarts the reproduction processing in response to the instruction.

For example, if the user pauses while watching a movie and the scene at the time of the stop includes a dialogue,
Playback may be resumed from the middle of the dialogue. In such a case, it is difficult for the operator to understand the contents of the dialog and the like. For example, it is necessary to operate the rewind button 32d to return to a desired scene and to reproduce the scene again.
In order to avoid such troublesome operation, in this embodiment, when the speech is temporarily stopped in the middle of a scene, the reproduction is restarted from the head position of the scene including the speech. To be precise, if there is a caption in the scene including the point at which the pause was made, the reproduction is restarted from the head position of the caption. On the other hand, when the scene is paused in a scene without a line (subtitle), the reproduction is resumed from the point of the pause. Further, when the recording is temporarily stopped for a predetermined time (for example, 10 minutes) T1 or more, the reproduction is resumed from a point where the reproduction is returned for a predetermined time (for example, 5 minutes) T2 from the time of the pause. If the scene returned by the predetermined time T2 includes a subtitle, the scene may be reproduced from the scene returned to the head of the subtitle.

More specifically, the controller 32 reads the above information from the data decoder 18 and processes the information according to the flowcharts shown in FIGS. When the power of the apparatus main body is turned on, the controller 32 starts the processing, and first determines in step S1 whether or not the reproduction has been instructed by the operator. That is, the play button 36
It is determined whether a has been operated. If “NO” in the step S1, that is, if the play button 36a is not operated, the process returns to the same step S1 as it is. On the other hand, if “YES” in the step S1, that is, if the reproduction button 3
When 6a is operated, reproduction is started from a predetermined address. For example, the disc 12 is played from the start of the movie.

In step S5, a packet is fetched from the demultiplexer 20, and it is determined whether or not NV_PCK is present in the fetched packet in step S7. If “NO” in the step S7, that is, if there is no NV_PCK, the process directly proceeds to a step S11. On the other hand, if “YES” in the step S7, that is, if there is NV_PCK, in a step S9, the current address data (current address data) is recorded in the memory area 34a provided in the RAM 34, and the process proceeds to a step S11.

In step S11, it is determined whether or not SP_PCK exists. If “NO” in the step S11, that is, if there is no SP_PCK, the process directly proceeds to a step S23 shown in FIG. On the other hand, in step S11, "Y
If "ES", that is, if there is SP_PCK, it is determined in step S13 whether the SP_PCK is SPUH. If "YES" in step S13, that is, S
If it is PUH, the memory area 34a is
Is copied to the memory area 34b provided in the RAM 34, and the process proceeds to step S29 shown in FIG.

On the other hand, if "NO" in the step S13,
That is, if not SPUH, step S17 shown in FIG.
Judge whether SP_PCK is SP_DCSQT. If “NO” in the step S17, that is, SP_
If it is not DCSQT, the process proceeds directly to step S23. On the other hand, if “YES” in the step S17, that is, if SP_DCSQT, the SP_DCSQT
DCSTA command to FSTA_DSP command and STA_
It is determined whether there is a DSP command. Step S
If “YES” in step 19, that is, if SP_DCCMD includes the FSTA_DSP command and the STA_DSP command, it is determined that there is a caption display, and step S21 is performed.
To set the flag S to ON (1), and to store the address data recorded in the memory area 34b in the RAM in step S23.
After copying to the memory area 34c provided in 34, the process proceeds to step S29.

On the other hand, if “NO” in the step S19, that is, if the FSTA_DSP command and the STA_DSP command are not included in the SP_DCCMD, it is determined whether or not the SP_DCCMDSP_DSP command and the CMD_END command are present in a step S25. If “NO” in the step S25, that is, SP_DCC
If there is no SP_DSP command and no CMD_END command in the MD, the process directly proceeds to step S29. On the other hand, if “YES” in the step S25, that is, SP
SP_DSP command and CMD_E in _DCCMD
If there is an ND command, it is determined that there is no caption display, the flag S is set to off (0) in step S27, and the process proceeds to step S29.

In step S29 shown in FIG. 6, it is determined whether or not the operation is temporarily stopped. That is, the pause button 3
It is determined whether 6e has been operated. Step S29
If "NO" is determined in step S5, that is, unless the pause button 36e is operated, the process returns to step S5. on the other hand,
If “YES” in the step S29, that is, if the pause button 36e is operated, a pause process is executed in a step S31. That is, the video decoder 22,
The sub video decoder 24 and the audio decoder 26 are disabled. Then, in step S33, the controller 32
The timer 32a provided therein is reset and started, and the current address data is recorded in a memory area 34d provided in the RAM 34 in step S35.

In a succeeding step S37, it is determined whether or not the suspension is released. That is, the play button 36a
It is determined whether or not has been operated. If “NO” in the step S37, that is, if the play button 36a is not operated, it is determined that the pause is not released, and the process returns to the same step S37 as it is. On the other hand, step S37
Is "YES", that is, if the play button 36a is operated, it is determined that the pause has been released, and step S
At 39, the timer value of the timer 32a is set to a predetermined time (for example,
10 minutes) It is determined whether it is T1 or more. Step S39
If the answer is "YES", that is, if the pause time is equal to or longer than the predetermined time T1, the reproduction is resumed from the position returned by the predetermined time (for example, 5 minutes) T2 in step S47, and step S5 shown in FIG. Return to

On the other hand, if "NO" in the step S39, that is, if the temporary stop time is less than the predetermined time T1, it is determined whether or not the flag S is on (1) in a step S41. If "YES" in the step S41, that is, if the flag S is on (1), it is determined that there is a caption display, and in a step S43, the reproduction is started from the head position of the caption. That is, the reproduction is restarted from the head position of the scene including the dialogue. Specifically, the controller 3
2 executes the reproduction process from the position corresponding to the address data stored in the memory area 34c. Therefore,
Playback resumes from a good break.

On the other hand, if "NO" in the step S41, that is, if the flag S is off (0), it is determined that there is no caption display, and the reproduction is resumed from the position where the subtitle is paused in a step S45. Specifically, the controller 32 executes the reproduction process from the position corresponding to the address data stored in the memory area 34d.

According to this embodiment, when the scene is paused in the scene including the dialogue, the reproduction is resumed from the head position of the subtitle, so that the reproduction can be resumed from the place where the break is good. Furthermore, even if the user pauses for a relatively long time, the reproduction is resumed from a point where the time is slightly returned, so that the contents can be easily understood.

In this embodiment, by operating a button provided on the operation panel of the DVD reproducing apparatus,
Although instructions such as reproduction and pause are input, they may be input using a remote control transmitter.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is an illustrative view showing one portion of a DVD-Video format;

FIG. 3 is an illustrative view showing another portion of the DVD-Video format;

FIG. 4 is a flowchart showing a part of the processing of the controller shown in FIG. 1 embodiment.

FIG. 5 is a flowchart showing another portion of the processing of the controller shown in the embodiment in FIG. 1;

FIG. 6 is a flowchart showing another portion of the processing of the controller shown in the embodiment in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... DVD reproducing apparatus 12 ... Disk 14 ... Optical pick-up 16 ... RF circuit 18 ... Data decoder 20 ... Multiplexer 22 ... Video decoder 24 ... Sub picture decoder 26 ... Audio decoder 28 ... NTSC encoder 30 ... D / A 32 ... Controller 34 ... RAM 36 ... operation panel

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (5)

[Claims] 1. A video signal reproducing means for reproducing a video signal and a sub-video signal from a recording medium, a suspending means for temporarily suspending the reproduction, a resuming means for resuming the reproduction from the pause, and when the resuming means is operated. A video signal reproducing apparatus, comprising: a determination unit that determines a restart position according to the presence or absence of the sub-video signal when the reproduction is temporarily stopped by a pause unit. 2. The video signal reproducing apparatus according to claim 1, wherein when there is said sub-video signal, said determination means determines said resuming position at the beginning of said sub-video signal. 3. The video signal reproducing apparatus according to claim 1, wherein when there is no sub-video signal, said determining means determines said resume position to be a temporarily stopped position. 4. The method according to claim 1, wherein the determining means includes a timer for counting a time during the pause, and when the timer value exceeds a first predetermined time, the resume position is shifted from a position at which the pause is temporarily stopped. 4. The video signal reproducing device according to claim 1, wherein the video signal reproducing device is determined at a position returned by a predetermined time. 5. The video signal reproducing apparatus according to claim 4, wherein said recording medium records a digital video signal in a DVD-Video format.