JP3248843B2 - Caption projection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caption projection device for displaying a caption of a movie, and more particularly to a caption projection device for superimposing a caption on a movie image without directly recording the caption on a movie film. The present invention relates to a caption projection device that can project an image onto a caption.

[0002]

2. Description of the Related Art Conventionally, when a foreign movie is screened in Japan, Japanese subtitles are projected on the right or lower side of a screen for a viewer. For this purpose, subtitle characters are directly recorded in a part of the image area of a film print of a foreign movie, and the subtitles are projected on a screen together with the image. In recording the subtitles, a so-called "drive-in method" is adopted in which a film print is subjected to a chemical treatment and recorded. According to this recording method,
First, a part of the finished film print (1/3 of the longitudinal direction)
Is softened by a chemical, and a character (corroded copper plate) is hit on the softened portion to physically destroy the film surface (emulsion) on the film and record subtitles.

On the other hand, as disclosed in Japanese Patent Publication No. 4-68609, there is a caption projecting apparatus that projects captions on a video without performing any processing on the movie film print itself. This apparatus includes a synchronizing signal reproducing unit that outputs a synchronizing signal synchronized with an audio signal of a movie, and a projecting unit that projects subtitles recorded on a subtitle film based on the synchronizing signal.

[0004] The operation of this device will be described below.
First, the video and audio without the subtitles are reproduced from the movie film by the ordinary projection system, and are displayed independently of the subtitles. In parallel with the movie, the subtitle projection device operates as described below to project the subtitle on a part of the video image on the screen. That is, the synchronizing signal reproducing means constituting this apparatus reproduces and outputs a synchronizing signal recorded in advance on a recording medium such as a cassette tape in synchronization with the movie. In this recording medium, a sound signal of a movie soundtrack is copied and recorded together with a synchronizing signal. The synchronizing signal is used so that the audio content recorded on the recording medium matches the subtitle content. It is recorded in synchronization with the signal. The projection means for projecting the caption projects the caption recorded on the caption roll slide film onto the screen based on the synchronization signal reproduced from the recording medium.

[0005] Here, the sound of the movie to be shown is reproduced from the sound track of the movie film, while the subtitles on the screen are projected in synchronization with the sound of the recording medium. Therefore, in order to match the content of the subtitle projected on the screen with the content of the video, it is necessary to match the phase of the subtitle projected by the subtitle projector with the sound reproduced from the sound track of the movie film. In this phase adjustment, the operator listens to the sound played back from the recording medium and the sound played back from the movie soundtrack, and manually controls the phase of the synchronization signal so that these sounds are in phase. Do it. Further, a subtitle roll slide film to be loaded into a conventional apparatus is produced through many steps such as input of a production original, production of a photographic original, film photography, development, and subtitle film editing.

[0006]

By the way, according to the above-mentioned "printing method", the color tone of the entire film of a film print on which subtitles are driven is impaired due to the influence of chemicals used for driving the subtitles. There is a problem. Also, since the subtitles are shot by damaging the film surface of the film, the subtitles once shot on the film cannot be corrected or deleted.
You need to pay close attention to the subtitle driving process,
There is a problem that workability is extremely poor.

Further, according to the caption projection device disclosed in Japanese Patent Publication No. 4-68609, there is an advantage that the film print is not directly damaged, but on the other hand, in order to properly maintain the phase between the caption and the sound, There is a problem that a specialized operator is restrained from the beginning to the end of the screening. Also,
Since the subtitle roll slide film used in this apparatus is produced through many steps as described above, there is a problem that the production requires time and production cost.

[0008] For this reason, valuable classic movie films,
Films rented from abroad and must be returned as they are will be screened without subtitles, or
The apparatus disclosed in Japanese Patent Publication No. 4-68609, which requires time and expense to produce a subtitle roll slide film, has to be dealt with.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and it is possible to project a subtitle synchronized with an image on a screen without performing any processing on a cinema film print itself, Capable of projecting subtitles synchronized with the video (corresponding to the audio content) on the screen without manual operation, and making preparations for subtitle projection in a short time without significant production costs. It is an object of the present invention to provide a caption projection device capable of performing the above.

[0010]

SUMMARY OF THE INVENTION The present invention has the following arrangement in order to achieve the above object. According to the first aspect of the present invention, there is provided a caption projecting apparatus, wherein each of the first and second projectors has a first subtitle projecting apparatus in accordance with the number of frames of a movie film.
Synchronizing signal generating means for generating a second synchronizing signal, and signal generating means for converting the number of frames into the number of video frames based on one of the first and second synchronizing signals and outputting a time code signal And subtitle information output means for converting the subtitle information synchronized with the movie film into an outline font with reference to the time code signal and outputting the subtitle information as a video signal, and inputting the video signal and converting the subtitle information into the outline font. Projection means for projecting onto a screen.

In the case where the signal generating means shifts the projection of the cinema film from the first projector to the second projector, the signal generating means outputs a time code signal based on the first synchronization signal. A time code signal based on the second synchronizing signal is output after a non-signal period, and at the same time, the number of pulses of the synchronizing signal generated in the film reader is counted to output a switching signal of the projector. It is configured such that the set value set in the pulse counter can be changed.

According to a second aspect of the present invention, there is provided a subtitle projecting device according to the first aspect, wherein a display device such as a liquid crystal display provided with subtitle information on the side of the spectator seat instead of the subtitle projecting means. Is provided.

According to a third aspect of the present invention, there is provided a subtitle projecting apparatus according to any one of the first to third aspects, wherein the synchronizing signal generating means of the subtitle projecting apparatus according to any one of the first to third aspects rotates a sprocket of a projector for feeding a movie film. A sensor for detecting a corner or a sensor for optically detecting a perforation of a motion picture film is provided, and is configured to generate a first or second synchronization signal based on a detection result of any of the sensors.

The subtitle projection device according to the present invention having the above-described structure operates as follows. That is, according to the subtitle projection apparatus according to the first aspect of the present invention, the synchronizing signal generating means generates, for example, five pulses for one frame, and sends the number of frames of the movie film loaded in the projector. Generates a synchronizing signal having the number of pulses corresponding to. For example, when 30 video frames are allocated to 24 frames, the signal generation unit generates one frame of the video signal for transmission of 24/30 frames based on the synchronization signal generated by the synchronization signal generation unit. The number of frames is allocated and converted to the number of video frames, and a time code signal is generated for each video frame. The subtitle information output unit refers to the time code signal for each video frame generated by the signal generation unit, converts the subtitle information synchronized with the movie film feed into an outline font, and outputs the subtitle information as the video signal. The projection unit inputs the video signal output by the subtitle information unit and projects subtitles on a screen.

Further, according to the caption projection device of the present invention, when the projection of the movie film is shifted from the first projector to the second projector, the signal generating means operates as follows. That is, in this case, the signal generating means outputs a time code signal output based on a first synchronization signal generated according to the number of frames of the movie film loaded in the first projector, and then outputs a non-signal signal. A period is provided, and after this non-signal period, a time code signal is output based on a second synchronization signal generated in accordance with the number of frames of the movie film loaded in the second projector.

According to a second aspect of the present invention, there is provided the subtitle projector according to the first aspect, further comprising a display device such as a liquid crystal display provided on the side of the audience seat. Means for inputting a video signal output by the subtitle information output means and displaying subtitles;

According to a third aspect of the present invention, there is provided a caption projecting apparatus according to the first or second aspect, wherein:
The rotation angle of the sprocket of the projector or the perforation of the motion picture film is detected. The synchronizing signal generating means generates the first or second synchronizing signal based on the detection result of the sensor. The perforations in the motion picture film are detected in a non-contact state using an optical sensor.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A caption projecting apparatus according to an embodiment of the present invention will be described below with reference to FIGS. Here, FIG. 1 is a block diagram showing a configuration of the subtitle projection device according to the present embodiment, and FIG. 2 is for explaining a relationship between a time code signal generated in the device of the present embodiment and a movie film. FIGS. 3 and 4 are timing charts for explaining the operation of the device of the present embodiment.

The subtitle projection device of the present embodiment shown in FIG.
A projector FPa and the synchronization signal generator for generating a synchronization signal phi _a and phi _b respectively depending on the number of frames of the loaded movie film FPb (synchronization signal generating means) 1a and 1b, the synchronization signal phi _a and phi _b A time code signal generation section (signal generation means) 2 for generating and outputting a time code signal TC corresponding to the number of frames of the movie film based on the time code signal, and a subtitle code signal JC described later with reference to the time code signal TC. A subtitle code signal generation unit 7 for generating and outputting, a video signal generation unit 11 for converting subtitle information synchronized with a movie film into an outline font based on the subtitle code signal JC and outputting it as a video signal S _VIDEO , S
Video projector 17 that inputs _VIDEO and projects subtitle information converted into outline fonts on screen SC
(Projecting means).

The caption code signal generator 7 and the video signal generator 11 constitute a caption information output unit 18 (caption information output means). The signal TC is input, and a video signal S _VIDEO is output to the video projector 17. Note that the synchronization signal generators 1a and 1b included in the apparatus of the present embodiment are respectively the first projector FP
a and FPb will be described as being provided with an encoder that detects the rotation angle of the sprocket and generates a pulse signal corresponding to the rotation angle. For example, a sprocket hole of a movie film loaded in a projector is described. The pulse signal may be generated by means of an optical sensor.

[0021] Here, the time code signal generating unit 2 receives the _b synchronizing signal phi _a and phi, respectively from the synchronizing signal generating unit 1a and 1b, switching signal generated internally by counting the number of pulses of the synchronization signal Synchronization signal φ _a based on S1
And phi respectively synchronizing signal gate sequencer 3 to output at a timing to be described later of _b, and the interface 4a and 4b which respectively generate a frame signal phi _fa and phi _fb from the synchronization signal phi _a and phi _b, the frame signal phi _fa And φ
time code signal generators 5a and 5b for generating time code signals TCa and TCb based on _fb ,
An output switching sequencer 6 for selecting the time code signal TCa or TCb based on the switching signal S2 given from the synchronization signal gate sequencer 3 and outputting the selected time code signal TC as the time code signal TC.

The subtitle code signal generation section 7 generates a subtitle code signal JC from an input keyboard 8 for inputting timing data and the like to be described later and a time code signal TC output from the time code signal generation section 2. A synchronizing signal output control section 9 for outputting the synchronizing signal output control section 9; and a control monitor 10 for displaying input information such as timing data input to the synchronizing signal output control section 9 or processing contents. The time code reading unit 9 reads a time code from the time code signal TC and specifies a subtitle code corresponding to the read time code with reference to the timing data.
a and a relay output board 9b that outputs a subtitle code signal JC based on the specified subtitle code.

Further, the video signal generation unit 11 converts the subtitle information into an outline font based on the input keyboard 12 for inputting the subtitle information and the subtitle code signal JC output from the subtitle code signal generation unit 7, and outputs the video signal S.
A subtitle character generator 13 for generating a _VIDEO , an input monitor 14 for displaying input information or processing content for the subtitle character generator 13, a transmission monitor 15 for displaying a processing result of the subtitle character generator 13, And a frame buffer 16 for temporarily storing and outputting the video signal S _VIDEO generated by the character generator 13.

The operation of the subtitle projecting apparatus according to the present embodiment having the above-described configuration will be described below with reference to FIG. 1, as shown in FIG. First, the operation in the case where the first projector FPa is operated to perform the projection will be described, as an example in the case where the second projector FPb is alternately operated to project one movie, and then the first projector FPa is switched to the second projector. The operation in the case where the operation is switched to FPb and the projection is continued will be described.

The following description of the operation is based on the premise that a video signal S _VIDEO is generated by associating 30 video frames with 24 frames of a cinema film. There is no restriction on the essence of, and any correspondence is possible. In the following description, when describing each signal in relation to a frame of a cinema film, it is necessary to add parentheses corresponding to the frame number in parentheses to a code representing the frame or the signal as necessary. I do. For example, when the frame of the film is represented by the code C, the code C _(24m) represents the 24m-th frame of the frame C.

First, when the operation of the first projector FPa shown in FIG. 1 is started and the projection of a movie is started, the synchronizing signal generator 1a operates the film feed mechanism such as a sprocket of the first projector FPa. By detecting the rotation operation or the operation of the mechanism portion linked thereto, the moving amount of the movie film (the number of frames of the film) is indirectly detected, and as shown in FIG. Synchronizing signal φ synchronized with the number of frames C fed
to generate _a.

That is, normally, four perforations H are assigned to one frame of the movie film Fa. For example, the synchronizing signal generator 1a sets the four perforations H to an integral multiple of five. The number of pulses p is output to generate _a synchronizing signal φa having the number of pulses corresponding to the number of frames C fed. The number of pulses p of the synchronization signal phi _a is defined according to the characteristics of the encoder included in the sync signal generator 1a, this encoder,
Pulses p are output at an integral multiple of 5 with respect to the rotation angle of one sprocket in which the number of frames C is fed.

In this way, the number of pulses p which is an integral multiple of 5 with respect to the rotation angle of one sprocket is equal to the number of pulses of the frame C fed.
Is output as described above.
This is because it is assumed that 30 video frames are associated with four frames. That is, 24 frames are converted to 30
In the case of a frame, by generating an integer multiple of 5 for one frame, the number of pulses of 24 frames can be divided by 30 without generating a remainder.
As will be described later, by dividing the frequency of this pulse signal, it becomes possible to generate a frame signal φ _fa having 30 pulses p with respect to the number of feeds of 24 frames.

Therefore, in this case, if pulses p of an integral multiple of 5 are generated for one frame, a frame signal of 30 video frames per 24 frames is obtained by adjusting the frequency division number of the pulse p. be able to. Note that the number of pulses p generated by the synchronization signal generator 1a for one frame is not limited to this, and may be appropriately set according to the relationship between the number of frames and the number of video frames.

[0030] The phase of the synchronization signal phi _a is generated as different from in the case where the film is rewound to the case to be sent, the subsequent stage of the device for inputting a synchronizing signal phi _a by identifying the phase Can identify and process the film feeding direction. In the following description, unless otherwise specified, the synchronization signal phi _b synchronizing signal phi _a and below shall have the phase when the film is fed.

On the other hand, the synchronizing signal generator 1b operates in the same manner as the synchronizing signal generator 1a described above, and
If the routine moves is projected onto projection projector 2 Unit FPb from a, it generates a synchronization signal phi _b by converting the number of frames of the loaded in the projector 2 Unit FPb film number of video frames.

Next, the synchronization signal gate sequencer 3 constituting the first stage of the time code signal generation section 2 receives the synchronization signals φ _a and φ _b from the synchronization signal generators 1 a and 1 b respectively, and The signals φ _a and φ _b are managed by a pulse counter provided inside the gate sequencer 3 and applied to the subsequent interfaces 4a and 4b. That is, the gate sequencer 3 identifies the feeding period of the film reader portion by counting the number of pulses of the synchronization signals φ _a and φ _b generated in the film reader portion provided before the video portion of the movie film. and, the synchronization signal phi _a in this period, phi _b closes the output gate so as not to be output interface 4a, the 4b (first function of the gate sequencer 3).

The length of the film reader is determined in advance according to the type of the projector, and the number of pulses of the synchronization signal generated in the leader is also determined. Therefore, by setting the number of pulses generated in the reader portion in the pulse counter, the gate sequencer 3 closes the output gate until the number of pulses of the input synchronization signals φ _a and φ _b exceeds the set value. The output of the synchronization signal is prohibited during the feeding period of the reader portion. The control of the output gate of the gate sequencer 3 is performed by a switching signal S1 shown in FIGS. 3 and 4 which is internally generated based on the count value of the pulse counter.

The set value of the pulse counter can be arbitrarily preset. By making the setting value of the pulse counter changeable in this manner, it is possible to appropriately set the timing of the film change of the two projectors performing the alternate operation. That is, the timing of the film change that is normally performed is set by measuring the time with a clock timer that is installed as a standard inside the projector.

However, at present, it is difficult to accurately set the film change timing by measuring the time due to variations in the rotation start time of the motor of the projector and the setting accuracy of the clock timer.
For movie films, the film is loaded according to the above-mentioned performance of each projector (standby at the film reader).
Is performed, the feed amount of the leader portion differs for each projector. Therefore, in the apparatus of the present embodiment, by setting the set value of the pulse counter that counts the pulse signal generated according to the moving amount of the film arbitrarily, the individual values can be set without being affected by the performance difference of the projector. It is possible to appropriately set the film change timing according to the loaded state of the film.

As a second function, the gate sequencer 3 outputs a synchronizing signal of one of the projectors which has started the projection after the alternately changing film, based on the switching signal S1, and simultaneously terminates the operation of the other projector. (A second function of the gate sequencer 3). The first of the aforementioned gate sequencers 3
With this function and the second function, it is possible to accurately change the synchronizing signal at the time of a film change, which will be described later, in frame units of the film.

[0037] Now, the pulse signal phi _a of the synchronous signal generating section 1a generated, when loaded into projector 1 Unit FPa film moves in the image portion from the reader portion, is outputted from the gate sequencer 3 above the interface 4a . The interface 4a, as shown in FIG. 2, 1 cycle of 30 minutes of the synchronization signal phi _a input via the gate sequencer 3 by dividing e.g. 24 comatic C feeding time of T _f
By generating a frame signal φ _fa , the synchronization signal φ _a is replaced with the frame signal φ _fa .

The reason for replacing this way a synchronization signal phi _a in dividing the frame signal phi _fa is the first synchronization signal generating device for projector mechanism for feeding the film 1
a, the synchronization signal generator 1a
It is necessary to correspond to the difference in the detected amount such as the number of rotations detected by. Second, as described above, the relationship between the number of frames (1 second = 24 frames) in the case of normal film projection and a frame (1 second = 30 frames) of a video signal S _{VIDEO to be} described later is shown in FIG. This is to keep the frequency division function.

Generating the frame signal φ _fa based on this relationship is important in creating timing data (also called a spotting list) for movie subtitles. In other words, using a spotting list that measures the timing and length of speech input, the caption translator performs caption translation without reducing the location where the captions are entered and shortening it to a legible length. By maintaining the relationship between the film and the video signal (24 frames of film = 30 frames of video), it is possible to create a spotting list for subtitle translation on a video tape without directly referring to the screening film during subtitle translation. The data obtained by this spotting list is used as timing data of relay output information of the synchronization signal output control device 7 described later.

Next, the interface 4a
Frame signal phi _fa generated in is input to the time code signal generating unit 5a. This time code signal generator 5
a is the frame signal φ _fa with reference to the frame signal φ _fa.
The time code signal T shown in FIG.
Generates Ca. Therefore, as described later, the time code generated from the time code signal TCa is generated for each frame of the video signal. As shown in FIG. 2 (at the bottom), a sync word SWa for distinguishing each time code signal is added to the tail (or a predetermined position) of the time code signal TCa.

On the other hand, the interface 4b operates in the same manner as the interface 4a described above, and
a, the synchronization signal φ given through the gate sequencer 3 when the projection is transferred to the second projector FPb.
_A frame signal φ _fb is generated from _b . Also, in this case,
The time code signal generator 5b operates in the same manner as the above-described time code signal generator 5a, and generates a time code signal TCb with reference to the frame signal φ _fb .

As described above, by generating the time code signal corresponding to the moving amount of the film based on the input pulse p, the film which does not originally have the absolute time address as information can be apparently obtained. It can be handled as if it has a time code representing a temporal absolute address. As described later, this time code is used to determine the timing of subtitle transmission.

Next, the output switching sequencer 6 receives the time code signals TCa and TCb from the time code signal generators 5a and 5b, respectively, and outputs the time code signals TCa and TCb to the switching signal supplied from the synchronization signal sequencer 3. One is selected based on S2, and one is output as a time code signal TC. In this case, since the first projector FPa is operating, the output switching sequencer 6
Selects the time code signal TCa given from the time code signal generator 5a and outputs it as the time code signal TC.

Next, the subtitle code signal generation section 7 receives the time code signal TC from the time code signal generation section 2 and refers to the timing data to be described later to generate a subtitle code signal JC corresponding to the time code TC signal. Is output. That is, the synchronization signal output control unit 9 constituting the subtitle code signal generation unit 7 receives the spotting data prepared for subtitle translation as subtitle transmission timing data.
The information is previously input to an electronic recording medium provided in the synchronization signal output control unit 9 via the input keyboard 10 or the like. This timing data associates a time code represented by the time code signal TC with a caption code described later. This subtitle code is added to subtitle data for each subtitle title input to the video signal generation unit 11 described later.

When the time code reading section 9a constituting the synchronizing signal output control section 9 receives the time code signal TC output from the output switching sequencer 6, the time code reading section 9a searches the timing data and searches for the time represented by the time code signal TC. Specify the subtitle code associated with the code. The specified caption code is output as the caption code signal JC via the relay output board 9b.

This subtitle code indicates a range of absolute addresses on the film indicated by the input time code signal TC, and is represented by consecutive numbers. For example, in the timing data, assuming that the subtitle code “100” is defined by a time code representing a temporal absolute address A and a time code representing a temporal absolute address B on a film, the time code reading unit 9 a When the time code indicating the temporal absolute address between the temporal absolute addresses A and B on the film is read, the subtitle code "10
"0" is specified, and the specified caption code is output as the caption code signal JC via the relay output board 9b.

Next, when the subtitle character generator 13 constituting the video signal generator 11 receives the subtitle code signal JC output from the subtitle code signal generator 7, the subtitle text data associated with the subtitle code signal JC is input. To identify. The specified subtitle text data is converted to an outline font and output as a video signal S _VIDEO . Here, subtitle information is read into the subtitle character generation unit 13 via the input keyboard 13 or an electronic recording medium (not shown) in advance. The subtitle information includes the above-described subtitle code and subtitle text data, and one subtitle code is assigned to each subtitle text data corresponding to the dialog.

When the caption character generator 13 obtains the caption code signal JC output from the caption code signal generator 7, it rapidly develops the caption text data as a high-quality outline font and outputs this as a video signal S _VIDEO. I do. This video signal is temporarily stored in the frame buffer 16, and by accessing the frame buffer 16 and outputting the video signal S _VIDEO , even if there is a change in subtitles projected at a fast timing, there is no delay. Video signal S at high speed with appropriate timing
_VIDEO can be output.

The subtitle code of the subtitle code signal JC output by the subtitle code signal generation unit 7 and the subtitle code specified by the video signal generation unit 11 with reference to the subtitle code signal JC are originally identical. If they do not match, a difference occurs between the contents of the caption projected on the screen and the contents of the audio. Therefore, the subtitle code specified by the subtitle code signal generation unit 7 and the video signal generation unit 1
By constantly checking the subtitle code specified by 1
It is assumed that the caption content and the audio content always match. Thus, even when the projector is reversed and the film is rewound, and the film is resumed from the position where the film was rewound, for example, the subtitles after the restart of the film and the sound are correctly transmitted and the subtitles that match the sound are correctly transmitted. Is done.

The video signal S _VIDEO output from the video signal generation unit 11 in this manner is input to the video projector 17, which converts the subtitles on the same screen as the movie or the subtitles prepared outside. Project on a projection screen. The video projector 17 may be a liquid crystal video projector or a triode video projector, and may be any device that can project subtitle information converted into a video signal on a screen. Is also good.

Next, the operation of the projector is the first projector FP
The operation in the case of switching from “a” to the second projector FPb will be described below with reference to FIGS. As described above, the output switching sequencer 6 includes the time code signal TC generated by the time code signal generators 5a and 5b.
a and TCb are switched and output. As shown in FIG. 3, the switching timing is instructed from the switching of the synchronization signal gate sequencer 3 with a delay of, for example, 0.05 seconds or less for a fixed time T _DLY. You.

First, referring to FIG. 3, this time T
After describing the original operation in the case where _DLY is provided, the operation in the case where the time T _{DLY is} not provided will be described with reference to FIG. 4, and the significance of providing this time T _DLY will be described. here,
FIG switching signal S1 shown in 3, as described above, which is the synchronization signal gate sequencer 3 shown in FIG. 1 defines the timing for outputting the synchronizing signal phi _b stops outputting the synchronization signal phi _a, time the switching of the output is carried out at t _1.
Further, the switching signal S2 is a signal output from the output gate sequencer 6 as the synchronization signal TC, and is converted from a time code signal TCa output by the time code signal generator 5a to a time code signal TCb output by the time code signal generator 5b.
At the time t.
This switching is performed in ₂ .

[0053] First, at time t _1, when the synchronization signal gate sequencer 3 starts output of the synchronous signal phi _b stops the output of the synchronous signal phi _a, thereafter, divides the synchronization signal phi _a by the interface 4a Frame signal φ _fa
Is fixed. As a result, as shown in FIG. 3 (third stage), after outputting the time code signal TCa _(m) , the time code signal generation unit 5a stops generating the time code signal TCa and enters a no-signal state. . As a result,
Time code signal TC output from output switching sequencer 6
Is a time code signal T as shown in FIG.
After the output of Ca _(m) is completed, there is no signal.

On the other hand, the interface 4b is given a synchronization signal phi _b from the synchronizing signal gate sequencer 3 from time t _1, but starts to output some time code signal, the output switching sequencer 6, until the time t ₂ is because you selected time code signal TCa, the time code signal TCb in the period of time t ₁ ~t ₂ it will not appear at the output of the output switching sequencer 6.

When the output of the output switching sequencer 6 is switched at time t ₂ , the time code signal TCb
Is output as the time code signal TC. At this time,
Time code signal generating unit 5b at a time t ₂ is, assuming that a completion of an output of the time code signal TCb (n _{+ 1),} first, after a portion of the time code signal TCb (n _{+ 1)} is output , The time code signal TCb _{(n + 2) and} thereafter are output following the sync word SWb _{(n + 1)} .

As described above, the synchronization signal gate sequencer 3
As a result of the switching of the output switching sequencer 6,
As shown in FIG. 3 (bottom row), the output switching sequencer 6
, The time code signal TCa of the time code signal TCa generated from Unit 1 FPa side projector _{(m) is} stopped, the time code signal TCb across this after non-signal period T _X
The output of the time code signal TCb is started from a part of _{(n + 1 )} .

The time code signal T having such signal contents
The subtitle code signal generation unit 7 that inputs C processes the time code signal TC for each area divided by the sync word to generate a time code. At this time, FIG. 3 (bottom row)
Of the time code signal TCb _{(n + 1)} shown in FIG. 4 has not reached the effective signal amount, and is therefore excluded from the target of the time code generation processing.
Cb _{(n + 2) is} processed. In this way, when the projector changes and a film change occurs,
The time code signal switches over a non-signal period.

Next, an operation in the case where the switching of the output switching sequencer 6 is performed simultaneously with the switching of the synchronization signal gate sequencer 3 will be described with reference to FIG. In this case, as shown in FIG. 4, when the switching signals S1 and S2 is changed at the same time t _1, the time code signal generating unit 5a
Is generated in the same manner as described above, and after outputting the time code signal TCa _(m) , the signal enters a no-signal state. On the other hand, the time code signal generating unit 5b starts outputting any time code signal from time t _1.

As a result, for example, at time t ₁ , the signal state of the time code signal TC changes to the time code signal T
Assuming that the time code signal is in the middle of Cb _(n) , the time code signal TC output from the output switching sequencer 6 is as shown in FIG.
As shown in _(1), a part of the time code signal TCa _{(m) and} a part of the time code signal TCb _(n) are combined at the time t ₁ as a boundary to form a garbled time code signal. The subtitle code signal generation unit 7 on the subsequent stage that inputs this generates an incorrect time code, and the subtitle projected on the screen does not match the audio.

By the way, the subtitle code signal generation section 7 which inputs the time code signal TC, if the time code signal TC is lost due to noise, if the signal state is restored within a predetermined time, the signal of this loss period is output. Interpolation has the function of eliminating the effect of noise, but if the missing period exceeds a certain period, no interpolation processing is performed, and the signal region in this missing period is regarded as a region where the signal itself does not originally exist. have. Further, in addition to this function, even if it has a sync word, if it does not have an effective signal amount, it has a function of not being treated as a time code signal.

The apparatus according to the present embodiment focuses on the characteristics of the subtitle code signal generation unit 7 having such a function. In order to prevent the generation of the garbled time code signal, the subtitle code signal generation unit 7 has the above-described function. , A time code signal is switched by providing a non-signal period before the target is not subjected to the interpolation processing. As described above, the significance (reason) of providing the non-signal period by switching the output switching sequencer 6 with a certain delay from the switching of the synchronization signal gate sequencer 3 is here.

Hereinafter, the significance of providing a no-signal period in switching the time code signal upon a film change will be described. The generation of the time code is performed independently using synchronization signals which are detected from the operation of the individual projectors and are not synchronized with each other. For this reason, if only the synchronization signal is switched by the synchronization signal gate sequencer 3, the sync words of the time code signals may not be aligned and a part of the time code signal for one word may be instantaneously overlapped. Could be transformed into a simple time code. In addition, when the output of the time code signal from the time code signal generators 5a and 5b is switched, that is, when the switching of the output switching sequencer 6 is performed simultaneously with the switching of the gate sequencer 3, the time code is unnaturally changed. The time code is garbled.

In order to avoid such a situation, the output switching sequencer 6 is switched after a certain time delay from the switching of the synchronization signal gate sequencer 3, and the function of the subtitle code signal generator 7 described above, that is, the word is cut off as a word. By utilizing the function of ignoring uncompleted time code as bad data, the same effect as sending out accurate time code is produced as a result.

By modifying the present invention, the following device can be obtained. For example, in addition to projecting subtitles on a movie screen or the like using a video projector or the like, each audience seat is provided with a small display device such as a liquid crystal display, and the individual display devices in the audience seat are simultaneously displayed in several countries. By supplying word subtitle information, it is possible to obtain an apparatus that enables a viewer to select and use subtitles in an appropriate language by himself.

[0065]

As is clear from the above description, according to the present invention, the following effects can be obtained. That is, according to the first aspect of the invention, it is possible to easily transmit and project a caption automatically synchronized with a video without restraining an operator. According to the invention described in this section, preparation for subtitle projection can be performed in a very short time without performing any direct processing on the movie film, and correction and correction of subtitles can be performed. Can be easily performed, and the cost for producing subtitles can be significantly reduced.

Further, even if the operation of the projector is switched, generation of a garbled time code can be prevented, and a gap between a caption and a sound caused by the garbled time code can be prevented. In addition, the film change that is usually performed measures the time with a time-lapse timer that is installed as a standard inside the projector, but due to variations in the rise time of the motor of the projector and the setting accuracy of the time-lapse timer, it is not possible to measure the time. Although the timing of the film change cannot be set, the present invention makes it possible to appropriately set the film change timing of the two projectors that operate alternately by making the set value of the pulse counter changeable. Become. Therefore, the film change timing can be appropriately set according to the loaded state of each film without being affected by the performance difference between the two projectors.

According to the second aspect of the present invention, it becomes possible for each spectator to select a subtitle language and watch a movie.

According to the third aspect of the present invention, it is possible to generate a time code according to the amount of movement of the film without performing processing on the film itself.

Therefore, according to the present invention, high-quality subtitles are automatically displayed at an appropriate timing while accommodating every projection situation including the time of alternate operation in accordance with the running of the movie film loaded in the projector. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a caption projection device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining a relationship between a time code signal generated by the apparatus of the present embodiment and a movie film.

FIG. 3 is a timing chart for explaining an operation until the device of the present embodiment generates a time code signal.

FIG. 4 is a timing chart for supplementarily explaining the operation of the device of the present embodiment.

[Explanation of symbols]

1a, 1b Synchronous signal generator 2 Time code signal generator 3 Synchronous signal gate sequencer 4a, 4b Interface 5a, 5b Time code signal generator 6 Output switching sequencer 7 Subtitle code signal generator 8, 12 Input keyboard 9 Synchronous signal output control Unit 9a time code reading unit 9b relay output board 10 control monitor 11 video signal generation unit 13 subtitle character generation unit 14 input monitor 15 transmission monitor 16 frame buffer 17 video projector 18 subtitle information output unit JC subtitle code signal S1, S2 switching signal TC , TCa, TCb time code signal S _vIDEO video signal φ _a, φ _b synchronizing signal φ _fa, φ _fb frame signal

Claims (3)

(57) [Claims] A synchronizing signal generating means for generating first and second synchronizing signals in accordance with the number of frames of a movie film loaded in a first and a second projector, respectively; Signal generating means for converting the number of frames into a number of video frames based on any of the signals and outputting a time code signal; and converting the subtitle information synchronized with the movie film into an outline font with reference to the time code signal. Subtitle information output means for outputting as a video signal, and projection means for inputting the video signal and projecting the outline font converted subtitle information onto a screen, wherein the signal generation means performs the projection of the movie film. In the case of transition from the first projector to the second projector, there is no signal after the time code signal output based on the first synchronization signal. No. period to output the time code signal based on the second synchronization signal across the, with it, off
The number of pulses of the synchronization signal generated in the
Pulse cowl to output the switching signal of the projector
A subtitle projection device, wherein a set value set in the subtitle can be changed . 2. A caption display means for displaying caption information on a display device such as a liquid crystal display provided on the audience seat, instead of the caption projection means.
3. The caption projection device according to item 1. 3. The synchronizing signal generating means includes a sensor for detecting a rotation angle of a sprocket of a projector for feeding a motion picture film or a sensor for optically detecting a sprocket hole of the motion picture film. 2. The method according to claim 1, wherein the first or second synchronization signal is generated based on a result.
Alternatively, the caption projection device according to claim 2.