JPH07226907A - Video signal reproducing device and video recording medium - Google Patents

Abstract

PURPOSE:To provide the video signal reproducing device in which a content of a video image displayed on a screen in understood even in the state of stop, variable speed or a temporary stop mode by displaying a voice to be listened to on the screen in terms of a caption during the stop, variable speed or tentative stop mode. CONSTITUTION:A reproduction means 10 reproduces caption information. used for displaying a content of a video signal recorded on a recording medium 11 in terms of captions. A caption display control means 20 superimposes the caption display signal by the caption information reproduced by the reproduction means 10 onto a reproduced video signal and provides an output of the superimposed signal. An operation mode changeover control means 30 switches the reproduction operation mode of the reproduction means 10 and controls the operation of the caption display control means 20.

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 for reproducing a video signal recorded on a video recording medium, and a video signal and an audio signal on an inclined recording track, for example, as control information or search information. The present invention relates to a tape-shaped video recording medium on which a video subcode is recorded, for example, a video signal reproducing device such as an 8 mm video tape recorder and a video recording medium used in this video signal reproducing device.

[0002]

2. Description of the Related Art For example, as shown in FIG. 13, each recording track of a magnetic tape, which is a video recording medium reproduced by an 8 mm video tape recorder (hereinafter referred to as VTR), has an FM video signal and an FM audio signal. A video recording area 101 in which signals are recorded and a PCM recording area 102 in which PCM audio signals are recorded are provided. In the PCM recording area 102, a PCM to be described later
It is divided into two areas, a data area and a postamble area. Here, the video recording area 101 and the P
A video subcode (hereinafter, referred to as a video subcode for recording control information and search information between the CM recording area and the CM recording area)
It is called VSC. It is proposed to provide the recording area 103.

The video subcode is information that can be recorded at a position independent of the video signal and audio signal on the magnetic tape. The VSC recording area 103 in which the video subcode is recorded is specifically shown using FIG. 14, and the postamble area 20 of the PCM recording area 101 is shown.
2 and a part of the VP guard region 203. PC
The end of the PCM data area 204 of the M recording area 101 and V
An interval of 0.1H is provided at the end of the SC recording area 103, and the opposite end of the VSC recording area 103 and the end of the video recording area 102 are 2. In the case of the 3H and PAL system, an interval of 2.8H is provided. Here, “H” indicates the horizontal period.

The VSC recording area 103 includes an erase code recording area 205 for recording an erase code and a 1.0H search mark recording area 2 for recording a search mark.
06 and 0.8H data recording area 2 for recording data
It is divided into three areas of 07.

As shown in FIG. 15, the data recording area 207 has five data blocks BLK0 to BLK4.
And one end block END, which is a total of 6 blocks. The end block END is
VSC recording area 1 composed of 36-bit data
An end code indicating that it is the last data of 03 is recorded.

The above data blocks BLK0 to BLK4
Are each made up of 51-bit data, and a 3-bit synchronization code S is placed at the beginning of the data, followed by 5 words W consisting of 1 byte (= 8 bits).
A total of 6 words of D0 to WD4 and one word CRCC are arranged. In the words WD0 to WD4,
Predetermined data is recorded, and an error detection code is arranged in the word CRCC.

The VSC recording area shown in FIG. 14 has a PCM recording area.
When there is no recording area, as shown in FIG. 17, the area 301 where the erase code is recorded is set to 3.5H in the NTSC system and 3.9H in the PAL system, and the configuration of other VSC recording areas. Is similar to the case where there is a PCM recording area described above.

An example of the video subcode recorded in the words WD0 to WD4 will be described with reference to FIG.

In the case of a time code indicating the time from the head of the magnetic tape, as shown in A, the word WD0 contains
A mode number 01H indicating a time code is recorded, and the contents of the time code, such as hour, minute, second, and frame, are sequentially recorded in the words WD1 to WD4. Here, "H" of the mode number 01H indicates that the display is in hexadecimal. The same applies to the following.

In the case of the recording date, as shown in B, the mode number 03H indicating the recording date is recorded in the word WD0, and the words WD1 to WD3 indicate the year, which is the content of the recording date. Month and day are recorded in order.

In the case of the recording time, as shown in C, the mode number 04H indicating the recording time is recorded in the word WD0, and the contents of the recording time are recorded in the words WD1 to WD3. Minutes and seconds are recorded in order.

In the case of timer throw / pause information for automatically performing VTR shift, pause, playback, etc., D
As shown in FIG. 5, a word WD0 stores a mode number indicating that it is timer throw / pause information, a word WD1 specifies a shift or a pause operation, and words WD2 to WD3 describe the above. Hours, minutes, and seconds are recorded in order, which indicate the time when the operation is performed.

As described above, when the data of the recording date and the recording time is recorded as the video subcode in the VSC recording area, for example, when reproducing an 8 mm video tape,
It has been proposed to display the data based on the recording date and recording time data reproduced from the VSC recording area. It is also suggested that by recording the above-mentioned timer throw / pause information at a required location, a timer is operated according to the information at the time of playback, and control is performed so that gear shifting or pausing can be automatically performed at a certain location for a certain time. Has been done.

[0014]

However, according to the timer throw / pause information recorded in the VSC recording area, while the VTR is executing commands such as gear shift and pause, or manually stopping the VTR. , When operating the shift and pause mode, no sound was heard during that state. Therefore, if that state continues for a long time,
It was difficult to understand the contents of that part. For example, when cooking while watching a videotape on how to prepare a meal in which the above-mentioned timer throw / pause information is recorded in advance in difficult or small parts in the course of cooking, the VTR shifts or temporarily changes depending on the above-mentioned timer throw / pause information. Since the voice cannot be heard while in the stopped state, the explanation of that part will be ignored. Therefore, it was not possible to understand the difficult parts and the details. Also, if the command state continued for a long time, it was difficult to understand the cooking process. Alternatively, when a video tape on which the above-mentioned timer throw / pause information is not recorded is played, "stop" is manually performed,
Even when the "shift" or "pause" mode was operated, it was impossible to understand what was displayed on the screen because the voice was inaudible during that state.

Therefore, the present invention has been made in view of the above-mentioned conventional circumstances, and has the following objects.

That is, the object of the present invention is to display the sound that should be heard during the stop, speed change, and pause mode states on the screen by subtitles so that the screen is displayed even in the stop, speed change, and pause mode states. It is an object of the present invention to provide a video signal reproducing device and a video recording medium capable of understanding the contents of the video displayed in FIG.

[0017]

In order to solve the above problems, a video signal reproducing apparatus according to the present invention displays a video signal, an audio signal recorded on a recording medium, and the contents of the audio signal in characters. Reproducing means for reproducing the caption information, and caption display control means for superimposing and outputting a caption display signal based on the caption information reproduced by the reproducing means on the reproduced video signal,
While switching the playback operation mode of the playback means,
An operation mode switching control means for controlling the operation of the caption display control means is provided, and a reproduced video signal on which the caption display signal is superimposed is output in the variable speed reproduction mode.

The video signal reproducing apparatus according to the present invention is
The reproducing means is a video signal recorded on a recording medium,
The control information is reproduced together with the audio signal and the caption information for displaying the content of the audio signal in characters, and the operation mode switching control means performs a control operation according to the control information reproduced by the reproduction means. .

A video recording medium according to the present invention is a video recording medium in which a video signal and an audio signal are recorded, and subtitle information for displaying the content of the audio signal and control information for designating a reproduction operation mode. Is recorded in a recording area other than the effective recording area of the video signal and the audio signal.

The video recording medium according to the present invention is characterized in that the caption information and the control information are recorded while being superimposed on a vertical blanking interval of the video signal.

Further, the video recording medium according to the present invention is a tape-shaped magnetic recording medium in which an inclined track having a recording area for video signals and audio signals and a recording area for PCM data is formed. The subtitle information and the control information are recorded in a recording area between the audio signal recording area and the PCM data recording area.

[0022]

In the video signal reproducing apparatus according to the present invention, the reproducing means reproduces the caption information for displaying the content of the video signal recorded on the recording medium in characters. The caption display control means superimposes a caption display signal based on the caption information reproduced by the reproducing means on the reproduced video signal and outputs the superimposed video signal. The operation mode switching control means switches the reproduction operation mode of the reproduction means and controls the operation of the subtitle display control means.

Further, in the video signal reproducing apparatus according to the present invention, the reproducing means reproduces the video signal recorded on the recording medium, the audio signal and the control information together with the caption information for displaying the contents of the audio signal in characters. . The operation mode switching control means performs a control operation according to the control information reproduced by the reproducing means.

In the video recording medium according to the present invention, the control information is recorded in a recording area other than the effective recording area of the recorded video signal and audio signal, and the content of the audio signal is displayed in characters by the control information. Specify subtitle information and playback operation mode for

Further, in the video recording medium according to the present invention, the caption information and the control information are recorded while being superimposed on the vertical blanking interval of the video signal.

Further, in the video recording medium according to the present invention, the caption information and control information are recorded in a recording area between the recording area of the video signal and the audio signal and the recording area of the PCM data.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the video signal reproducing apparatus according to the present invention has a video signal (hereinafter referred to as a video signal) and an audio signal (hereinafter referred to as a video signal) recorded on a magnetic tape 11 which is a video recording medium. Audio signal) and reproducing means 10 for reproducing caption information and control information for displaying the contents of the audio signal in characters, and a caption display signal based on the caption information reproduced by the reproducing means 10 is superimposed on the reproduced video signal. And a subtitle display control means 20 for outputting the subtitle display control means 20 and a reproduction operation mode of the reproduction means 10 according to the control information reproduced by the reproduction means 10 and an operation mode switching control for controlling the operation of the subtitle display control means 20. And means 30.

The reproducing means 10 includes a tape traveling system mechanism 12 for traveling a magnetic tape 11 which will be described later, a magnetic head 13 for recording and reproducing the magnetic tape 11, and a recording / reproducing device.
It is composed of a reproduction amplifier 14. This reproducing means 10
At, the video signal and the audio signal from the data recorded on the magnetic tape 11 and the data recorded in the VSC recording area, for example, are read and supplied to the subtitle display control means 20.

The subtitle display control means 20 detects the video subcode from the data read by the playback means 10 and recorded in the VSC recording area.
A processing section 21, a video signal processing section 22 for outputting the video signal read by the reproducing means 10 to the monitor 40 as a reproduced video signal, and an audio signal read by the reproducing means 10 as a reproduced audio signal to a speaker 50. And an audio signal processing section 23 for outputting. Further, for example, an alarm circuit 26 for generating an alarm sound signal to be output when the pause state is released and the reproduction state is set is provided.
The alarm sound signal generated in 1 is output from the speaker 50 via the audio signal processing unit 23. Further, the video signal processing section 22 is provided with an image memory 24 and a character generator 25 for superimposing and outputting the subtitle display signal obtained from the video subcode on the reproduced video signal.

The operation mode switching control means 30 is a so-called microcomputer provided with a timer 31 and a caption information memory 32. The operation mode switching control means 3
To 0, for example, an input unit 60 in which various operation buttons such as “play”, “shift”, “stop”, and “pause” are arranged is connected. In this operation mode switching control means 30,
By controlling the reproduction means 10 and the caption display control means 20 described above, switching of the reproduction operation mode and control of the caption display processing are performed.

Here, in the above configuration, the FM video signal and the FM audio signal are recorded in the video recording area of the recording track of the magnetic tape 11, and the PCM audio signal is recorded in advance in the PCM recording area. ing. Further, in the VSC recording area at the predetermined position of the magnetic tape 11, the timer throw / pause information which is the above-mentioned control information and the subtitle information are after-recorded (hereinafter referred to as dubbing) as video subcodes. .

As shown in FIG. 3, the subtitle information is post-recorded on recording tracks T _{4 to} T ₆ before the recording tracks T _{1 to} T ₃ on which the timer throw / pause information is recorded. As shown in FIG. 2, the video subcode indicating the subtitle information has a mode number indicating that it is the subtitle information recorded in the word WD0, and the words WD1 to WD1.
Subtitle data to be displayed is recorded in WD4.

As described above, subtitle information and timer throw /
The magnetic tape 11 on which the pause information is recorded is a tape-shaped magnetic recording medium on which inclined tracks having a video signal and an audio signal and PCM data are formed, and the recording area of the video signal and the audio signal and the PCM data are recorded. A video recording medium according to the present invention, wherein the caption information and control information are recorded in a recording area between the recording area and the recording area.

The operation when the magnetic tape 11 is reproduced by the video signal reproducing apparatus will be described.

When the "reproduction" button of the input section 60 is pressed, the operation mode switching means 30 detects that it is in the reproduction state,
The tape running mechanism 12 of the reproducing means 10 is driven. As a result, the video signal and the audio signal recorded on the magnetic tape 11 are read by the magnetic head 13.
Each of the above signals is supplied to the subtitle display control means 20 via the recording / reproducing amplifier 14. The video signal is supplied to the video signal processing section 22 of the caption display control means 20, and the audio signal is supplied to the audio signal processing section 23 of the caption display control means 20. The output video signal output from the video signal processing unit 22 is supplied to the monitor 40 to display a reproduced image. Further, the output audio signal output from the audio signal processing unit is supplied to the speaker 50 and the reproduced sound is output.

Further, the reproducing means 10 supplies the data recorded in the VSC recording area of the magnetic tape 11 to the VSC processing section 21 of the subtitle display control means 20.
When the VSC processing section 21 detects a video subcode from the supplied data, it supplies the video subcode to the operation mode switching control means 30.

The operation mode switching control means 30 analyzes the supplied video subcode. When the video subcode is subtitle information, the information is stored in the subtitle information memory 3
Store in 2.

The above video subcode is a timer throw /
In the case of the pause information, the tape traveling system mechanism 12 of the reproducing means 10 is controlled so as to be in the state of shifting or temporarily stopped, and the timer 31 is started. Since the subtitle information recorded in the VSC recording area of the magnetic tape 11 is recorded on the recording track before the timer slow / pause information, when the timer slow / pause information is detected, , The operation mode switching control means 3
The subtitle information memory 32 of 0 stores the above subtitle information. This subtitle information is supplied to the character generator 25 of the subtitle display control means 20. The character generator 25 supplies a subtitle display signal based on the subtitle information to the video signal processing unit 22. Video signal processing unit 22
Supplies the reproduced video signal read by the reproduction control unit 10 and the caption display signal to the monitor 40.

Here, when the pause operation is designated in the timer throw / pause information, the operation mode switching control means 30 causes the image memory 2 of the subtitle display control means 20.
Control 4 As a result, the reproduced video signal for one screen at that time is supplied from the video signal processing unit 22 to the image memory 22 and written in the image memory 22.
Along with that, the operation mode switching control means 30
Repeatedly reads the reproduced video signal for one screen from the image memory 22 and supplies it to the video signal processing unit 22 as a still image video signal. Therefore, the video signal processing unit 22 synthesizes the still image video signal and the caption display signal and supplies the synthesized video signal to the monitor 40.

In this way, the reproduced image and the caption are combined and displayed on the monitor 40. At this time, the operation mode switching control means 30 monitors the timer 31. When the timer 31 reaches the time designated by the timer throw / pause information, the operation mode switching control means 30 controls the alarm circuit 26 of the caption display control means 20 to generate an alarm sound signal. This alarm sound signal is supplied to the speaker 50 via the audio signal processing unit 23 and an alarm sound is output. Further, the operation mode switching control means 30 clears the information stored in the subtitle information memory 32. Then, the tape traveling system mechanism 12 of the reproducing means 10 is controlled so that the reproducing state is established.

The operation mode switching control means 30 is also provided.
Monitors the above-mentioned timer 31 and inputs the data to the input unit 6
It also monitors the 0 Play button. When the "play" button is pressed while the timer 31 is being monitored, the subtitle information memory 32 is cleared and the tape running system of the playing means 10 is put into the playing state without generating the alarm sound signal. The mechanism 12 is controlled. Therefore, even in the shift or temporary stop state by the timer throw / pause information as described above, it is possible to return to the normal reproduction state by pressing the "reproduction" button of the input unit 60.

Specifically, timer throw / pause information,
Alternatively, the operation of the operation mode switching control means 30 based on the subtitle information will be described with reference to FIG.

First, it is judged whether or not the mode number of the supplied video subcode is caption information (step 5).
1). If it is subtitle information, the subtitle data is stored in the subtitle information memory 32, and the control process in the operation mode switching control means 30 is terminated (step 52). If it is not subtitle information, it is determined whether or not the mode number is timer throw / pause information (step 53). When it is not the timer throw / pause information, the control processing in the operation mode switching control means 30 is ended.

When the mode number is timer throw / pause information, the word WD of the video subcode
The operating state designated by 1 is controlled (step 54).
That is, as described above, when the shift state is designated, the tape traveling system mechanism 12 is controlled to display the reproduced image in the monitor 4 in the shift state.
To be displayed at 0. Further, if the temporary stop state is designated, the image memory 24 is controlled so that a still image is displayed on the monitor 40.

Next, the timer 31 is started (step 55).

Next, the information stored in the caption information memory 32 is supplied to the character generator 25, and an image in which the caption based on this information is combined with the reproduced image or the still image is displayed ( Step 56).

Next, it is determined whether or not the "play" button of the input section 60 has been pressed (step 57). When the "play" button is pressed, the information stored in the subtitle information memory 32 is cleared (step 60) and the normal playback state is immediately controlled (step 61).

When the "Play" button is not pressed, it is judged whether or not the time of the timer 31, that is, the elapsed time matches the time designated by WD2 to WD4 of the video subcode (step 58). . When the elapsed time has not reached the designated time, the process returns to the judgment of pressing the "reproduction" button (step 57). When the elapsed time has reached the designated time, the alarm circuit 26 is controlled to output an alarm sound (step 59). Then, the information stored in the caption information memory 32 is cleared (step 60), and control is performed so that a normal reproduction state is achieved (step 61).

Therefore, according to the timer throw / pause information recorded on the magnetic tape 11, even if the voice cannot be heard because the VTR is in the gear shifting state or in the pause state, it is recorded before the timer throw / pause information. Since the subtitles based on the existing subtitle information are displayed on the screen, you can understand what you are looking at. For example, in a video of how to cook a dish, in a scene such as "leave in this state for 3 minutes.", The timer throw / pause information is set to a pause operation for 3 minutes. As a result, the pause state is automatically set, and by displaying a voice such as a commentary of a dish which should be heard during this time in subtitles, the content of the part can be grasped without ignoring the commentary. In this way, while watching the video of how to prepare a dish, the above-mentioned timer throw / pause information is recorded according to the standard cooking speed, and the subtitle information for displaying the audio content at that time is recorded. When cooking, for example, it is possible to avoid the trouble of repeating the operation in the paused state and the replayed state, and to understand the contents viewed in real time. Also, when the playback state is changed from the pause state, an alarm sound is output, so that it is possible to know that the playback state is entered even without looking at the screen.

Also, only the above-mentioned subtitle information is recorded on the magnetic tape 11.
When what is recorded in the VSC recording area of each recording track is reproduced by the above-mentioned video signal reproducing device, when "stop", "pause", and "shift" are designated by the user's operation, the audio at that time is reproduced. The contents can be displayed in text. The operation of the above-described operation mode switching means 30 in this case will be described with reference to FIG.

First, it is judged whether or not the mode number of the supplied video subcode is caption information (step 7).
1). If it is subtitle information, the subtitle data is stored in the subtitle information memory 32 (step 72). Next, it is determined whether or not the "stop", "temporary stop" or "shift" button of the input unit 60 has been pressed (step 73). Here, if it is not the subtitle information in step 71, step 73 is directly performed. "Stop" or "Pause"
Alternatively, when the "shift" button is pressed, control is performed to the designated operation state (step 74). That is, if the shift state is designated, the tape running system mechanism 12 is controlled so that the reproduced image is displayed on the monitor 40 in the shift state. Also,
In the case of the temporary stop state or the stop state designation, the image memory 24 is controlled so that a still image is displayed on the monitor 40. When the "stop", "temporary stop" or "shift" button is not pressed, the control process in the operation mode switching means 30 ends.

Next, the information stored in the caption information memory 32 is supplied to the character generator 25, and an image in which the caption based on this information is combined with the reproduced image or the still image is displayed ( Step 75). Next, it is determined whether or not the "play" button of the input unit 60 has been pressed (step 76). When the "play" button is pressed, the information stored in the subtitle information memory 32 is cleared (step 77) and the normal playback state is immediately controlled (step 78). When the "reproduction" button is not pressed, it is judged again whether the "reproduction" button is pressed (step 76).

Therefore, when the user stops, pauses, or shifts the gear, the contents of the sound at that time are displayed on the screen as subtitles. I can understand.

In the above embodiment, the video subcode recorded in the VSC recording area of the magnetic tape 11 is used, but it is used for recording information such as video identification code and teletext. The same effect can be obtained by similarly using the vertical blanking interval of the video signal. A magnetic tape using this vertical blanking section is a medium in which a video signal and an audio signal are recorded, and caption information for displaying the content of the audio signal in character and control information for designating a reproduction operation mode are video. A magnetic tape, which is recorded by being superimposed on a vertical blanking interval of a signal, which is a video recording medium according to the present invention.

As described above, when the vertical blanking interval is used, the caption information is recorded using Bit1 to Bit20 of the vertical blanking interval t _V of the video signal shown in FIG. This recorded information is
This is called V blanking ID. Specifically, the format of the V blanking ID is shown in FIG.
The transmission aspect ratio and the image display format are designated in Bit2. For example, as shown in FIG. 8, each bit specifies whether the transmission aspect ratio is full mode or 4: 3, and the image display format is letterbox or normal. . Also,
A mode number is recorded in Bit3 to Bit6 (hereinafter, referred to as mode number B). For example, as shown in FIG. 9, it corresponds to any one of system code, year, month, day, hour, minute, timer throw / pause, text header, text data, and text end code (terminator). It is specified by the mode number.
In Bit7 to Bit14, actual data or flags relating to the mode number B are recorded (hereinafter, referred to as data / flag C). Also, Bit15 to Bit
An error code (CRCC) is recorded in 20.

In the case of the system information in which the code number B is "0000", the data / flag C is shown in FIG.
As shown in, information indicating whether or not there is subtitle information in the V blanking ID is indicated by ON / OFF of bit7. Further, the code number B is "0001" to "0".
In the case of the year, month, day, hour, and minute information of “101”, the data is recorded in the data / flag C in the BCD code. In the case of the text header information having the code number B of "1100", the data / flag C has a format of data recorded in the text data information having the code number B of "1101", that is, binary or Indicates whether it is ASCII data. Also,
In the case of the text data information whose code number B is “1101”, the data / flag C has character data recorded in binary or ASCII. In the case of the text end information whose code number B is "1110",
Checksum data indicating the end of the text data information is recorded in the data / flag C.

Here, the above V blanking ID is recorded in frame units. That is, assuming that the video signal in two field scans is the A field and the B field, the same V blanking ID is recorded in the A field and the B field. In the case of date and time, V blanking IDs are repeatedly recorded in frame units in the order of minute, hour, day, month, year. At this time, if the change point of the minute, that is, 00 seconds, 0 frame to at least 3
It is recorded repeatedly once per frame. In the case of the subtitle information, three pieces of information, that is, text header information, text data information, and text end information, are recorded as one piece of subtitle information.

For example, as shown in FIG. 11, first, V blanking ID 0 having a code number B of "1100" is recorded in the vertical blanking interval of the video signal of the first frame. This V blanking ID 0 indicates that it is text header information, and the format of character data of subtitle information is indicated. In the vertical blanking section of the next second frame, V blanking ID1 having a code number B of "1101" is recorded. This V blanking ID1 indicates that it is text data information,
The first character data of the character data of the caption information is recorded in binary or ASCII. Also, in the vertical blanking section of the third frame, the code number B is "1".
V blanking ID 2 of "101" is recorded. This V blanking ID2 also indicates that it is text data information, and the data of the second character of the character data of the caption information is recorded in binary or ASCII. In this way, the character data of the caption information is recorded character by character. Here, the number of character data of the above subtitle information is
Character data of n pieces, that is, n characters is used. Therefore, (n +
1) A V blanking IDn having a code number B of “1101” is recorded in the vertical blanking section of the frame, and the last character data of the character data of the subtitle information is binary or binary. It is recorded in ASCII. Then, the text end information indicating that the character data of the subtitle information has ended is the next (n +
2) V blanking ID (n + 1) with code number B of “1110” in the vertical blanking interval of the frame
Is recorded. As described above, one piece of subtitle information in which the number of characters is n is recorded.

Although not shown, timer slow / pause information, which is control information, is similarly recorded in the vertical blanking interval of the video signal, and the subtitle information is the timer slow / pause information. Recorded in the previous frame.

As described above, when the magnetic tape in which the timer throw / pause information and the subtitle information are recorded in the blanking section of the video signal is reproduced by the above-mentioned video signal reproducing apparatus, The control operation of the operation mode switching means 30 will be described with reference to FIG. In this case, the V blanking ID recorded on the magnetic tape is reproduced by the reproducing means 10 of the video signal reproducing apparatus. When the subtitle display control means 20 detects timer throw / pause information or subtitle information from the V blanking ID, the subtitle display control means 20 supplies the V blanking ID to the operation mode switching means 30.

First, it is determined whether or not the mode number of the supplied V blanking ID is text header information (step 81). If it is text header information,
The reading of subtitle information is stored, and the control process in the operation mode switching unit 30 is ended. If it is not text header information, it is judged whether or not it is text data information (step 83). When it is text data information,
It is determined whether or not the subtitle information is currently being read (step 84). When the subtitle information is currently being read, the subtitle information 1 in the subtitle information memory 32 of the operation mode switching means 30 is 1
The text data, which is character data, is stored, and the control processing in the operation mode switching means 30 ends (step 8).
5). When the subtitle information is not currently being read, the control processing in the operation mode switching means 30 is ended. If it is not the text data information in the above step 83, it is judged whether or not it is the text end information (step 86). If the text end information, the subtitle information memory 32
The character day of the subtitle stored in is checked (step 87). Then, the subtitle information reading is ended, and the control processing in the operation mode switching means 30 is ended (step 88). If it is not the text end information, it is judged whether or not it is the timer throw / pause information (step 8).
9). When it is not the timer throw / pause information, the control process in the operation mode switching means 30 is ended. If it is the timer throw / pause information, it is judged whether or not the reading of the subtitle information is completed (step 90). When the reading of the subtitle information is not finished, the control process in the operation mode switching means 30 is finished.

When the reading of the subtitle information is completed, the timer 31
Is started (step 91). Next, the information stored in the caption information memory 32 is supplied to the character generator 25, and an image in which the caption based on this information is combined with the reproduced image or the still image is displayed (step 92). . Next, it is determined whether or not the "play" button of the input unit 60 has been pressed (step 93). When the "play" button is pressed, the information stored in the subtitle information memory 32 is cleared (step 96), and the normal playback state is immediately controlled (step 97).
When the "play" button is not pressed, it is determined whether the time of the timer 31, that is, the elapsed time matches the time designated by the V blanking ID (step 94).
When the elapsed time has not reached the designated time, the process returns to the judgment of the pressing of the "play" button (step 93).
When the elapsed time has reached the designated time, the alarm circuit 26 is controlled to output an alarm sound (step 95). Then, the information stored in the subtitle information memory 32 is cleared (step 96), and control is performed so that a normal reproduction state is achieved (step 97).

[0064]

In the video signal reproducing apparatus according to the present invention, the reproducing means reproduces the caption information for displaying the content of the video signal recorded on the recording medium in characters. The caption display control means superimposes a caption display signal based on the caption information reproduced by the reproducing means on the reproduced video signal and outputs the superimposed video signal. The operation mode switching control means switches the reproduction operation mode of the reproduction means and controls the operation of the subtitle display control means. As a result, the sound that should be heard can be displayed on the screen by subtitles during the stop, speed change, and pause mode states. Therefore, it is possible to understand the content of the image displayed on the screen even in the stop, speed change, and pause mode states.

Further, in the video signal reproducing apparatus according to the present invention, the reproducing means reproduces the video signal recorded on the recording medium, the audio signal, and the control information together with the caption information for displaying the contents of the audio signal in characters. . The operation mode switching control means performs a control operation according to the control information reproduced by the reproducing means. As a result, the sound that should be heard can be displayed on the screen by subtitles during the stop, speed change, and pause mode states according to the control information. Therefore, it is possible to understand the content of the image displayed on the screen even in the stop, speed change, and pause mode states.

In the video recording medium according to the present invention, the control information is recorded in a recording area other than the effective recording area of the recorded video signal and audio signal, and the content of the audio signal is displayed in characters by the control information. Specify subtitle information and playback operation mode for As a result, the sound that should be heard is displayed on the screen by subtitles during the stop, shift, and pause mode states according to the control information. Therefore, it is possible to understand the content of the image displayed on the screen even in the stop, speed change, and pause mode states.

Further, in the video recording medium according to the present invention, the caption information and the control information are recorded while being superimposed on the vertical blanking interval of the video signal. As a result, the sound that should be heard is displayed on the screen by subtitles during the stop, shift, and pause mode states according to the control information. Therefore, it is possible to understand the content of the image displayed on the screen even in the stop, speed change, and pause mode states.

Further, in the video recording medium according to the present invention, the caption information and the control information are recorded in a recording area between the recording area of the video signal and the audio signal and the recording area of the PCM data. As a result, stop, speed change,
While in pause mode, what you should hear is displayed on the screen with subtitles. Therefore, it is possible to understand the content of the image displayed on the screen even in the stop, speed change, and pause mode states.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a video signal reproducing apparatus according to the present invention.

FIG. 2 is a diagram showing a format when subtitle information is recorded in each word of a video subcode in a VSC recording area.

FIG. 3 is a diagram showing a recording track pattern of an 8 mm VTR when recording timer throw / pause information and caption information in a VSC recording area.

FIG. 4 is a flowchart illustrating a process of reproducing a video recording medium in which timer throw / pause information and caption information are recorded in a VSC recording area in the video signal reproducing device.

FIG. 5 is a flowchart illustrating a process when the video signal reproducing device reproduces a video recording medium in which caption information is recorded in a VSC recording area.

FIG. 6 is a diagram showing a video signal waveform.

FIG. 7 is a diagram showing a data format of a vertical blanking section.

FIG. 8 is a diagram showing a transmission aspect ratio recorded in the vertical blanking interval and bit designation of image display.

FIG. 9 is a diagram showing mode number allocation recorded in the vertical blanking section.

FIG. 10 is a diagram showing a system code recorded in the vertical blanking section.

FIG. 11 is a diagram for explaining one piece of subtitle information when subtitle information is recorded in the vertical blanking section.

FIG. 12 is a flowchart illustrating processing when the video signal reproducing apparatus reproduces a video recording medium in which caption information is recorded in the vertical blanking section.

FIG. 13 is a diagram showing a recording track pattern of an 8 mm VTR.

FIG. 14 is a diagram showing a main part of a track format of a magnetic tape having a PCM recording area.

FIG. 15 is a diagram showing the structure of a video subcode area.

FIG. 16 is a diagram showing an example of a video subcode.

FIG. 17 is a diagram showing a main part of a track format of a magnetic tape having no PCM recording area.

[Explanation of Codes] 10 reproducing means 11 magnetic tape 12 tape running system mechanism 13 magnetic head 14 recording / reproducing amplifier 20 caption display control means 21 VSC processing section 22 video signal processing section 23 audio signal processing section 24 image memory 25 character generator 26 Alarm circuit 30 Operation mode switching control means 31 Timer 32 Subtitle information memory 40 Monitor 50 Speaker 60 Input section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04N 5/937 8224-5D G11B 27/34 P

Claims (5)

[Claims] 1. A reproducing means for reproducing caption information for character-displaying a video signal, an audio signal and the contents of the audio signal recorded on a recording medium, and a caption display signal by the caption information reproduced by the reproducing means. The subtitle display control means for superimposing and outputting the reproduced video signal and the reproduction operation mode of the reproduction means are switched,
A video signal reproduction apparatus comprising: an operation mode switching control means for controlling the operation of the caption display control means, and outputting a reproduction video signal on which the caption display signal is superimposed in the variable speed reproduction mode. 2. The reproducing means reproduces the control information together with the video signal, the audio signal, and the caption information for displaying the content of the audio signal recorded in a recording medium, and the operation mode switching control means comprises: The video signal reproducing apparatus according to claim 1, wherein the video signal reproducing apparatus performs a control operation according to the control information reproduced by the reproducing means. 3. A video recording medium having a video signal and an audio signal recorded, wherein the video signal and the audio signal include caption information for displaying the content of the audio signal in characters and control information for designating a reproduction operation mode. The video recording medium is recorded in a recording area other than the effective recording area. 4. The video recording medium according to claim 3, wherein the caption information and the control information are recorded while being superimposed on a vertical blanking interval of the video signal. 5. A recording area for video and audio signals and a PC
A tape-shaped magnetic recording medium in which an inclined track having an M data recording area is formed, wherein the caption information is provided in a recording area between the video signal and audio signal recording area and the PCM data recording area. The video recording medium according to claim 3, wherein control information is recorded.