JPH09130673A - Telecine device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the telecine device by which a video image obtained from a movie film is converted into digital audio information and a television signal corresponding to the video image. SOLUTION: A light from a light source is emitted to an image recording area of a movie film 40 and a transmitted light through the movie film 40 is picked up by an image pickup means 12 in this device to convert the video image based on the result of image pickup into a television signal. In this case, the device is provided with a digital audio reproduction means 51 reproducing digital audio information recorded on the movie film 40 corresponding to the video image to realize the telecine device 50, in which the video image obtained from the movie film 40 is converted into the digital audio information and the television signal corresponding to the video image.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. TECHNICAL FIELD OF THE INVENTION Conventional Technology (FIGS. 5 and 6) Problems to be Solved by the Invention (FIG. 7) Means for Solving the Problems Embodiments of the Invention (FIGS. 1 to 4)

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for use as a telecine device, particularly for a telecine device for converting an image obtained from a movie film into a television signal.

[0003]

2. Description of the Related Art Conventionally, as a telecine device of this type, a device in which a projector and a television device are combined is used for converting an image obtained from a movie film into a television signal.

Here, as shown in FIG. 5, a 35 [mm] movie film 1 used in a movie theater has feed holes (hereinafter referred to as feed holes) for synchronizing traveling at both ends in the width direction of the movie film 1. , This is called perforation) 2 is at a predetermined interval (eg 1 frame 19.05 mm) and 1
Four perforations per frame are sequentially provided, and a row of these two perforations (hereinafter,
These are referred to as first and second perforation lines respectively.) Optical information is recorded in respective recording areas 4 and 5 corresponding to audio information consisting of an image and an analog signal in an inner portion sandwiched by 3A and 3B. Has been done.

In the telecine device 10, as shown in FIG. 6, the movie film 1 drawn from the supply reel 11 is wound on a take-up reel 14 via a video photographing section 12 and an analog audio reproducing section 13. There is. The image capturing unit 12 includes the supply reel 11 to the roller 1
The film film 1, which is supplied through 5, 16 and the sprocket 17 and the sprocket shoe 18, is sequentially sent out to the take-up reel 14 through the gate portion 19 and the intermittent feeding portion 20.

Here, the gate portion 19 is the picture gate 2
1 and the press plate 22 so as to sandwich the movie film 1. Further, the intermittent feeding section 20 sandwiches the movie film 1 between an intermittent feeding sprocket (hereinafter referred to as an intermittent feeding sprocket) 22 and an intermittent feeding sprocket shoe (hereinafter referred to as an intermittent feeding squeeze) 23. It will be configured like this.

In this case, in the intermittent feed section 20, the intermittent feed sprocket 22 is sequentially rotated by a predetermined angle at a predetermined timing in the reproducing mode, whereby the movie film 1
The movie film 1 is intermittently fed so that the respective image recording areas 4 (FIG. 5) of (3) are sequentially stopped at the gate portion 19 instantaneously (for example, at a rate of 24 times / second).

At this time, the gate portion 19 is configured to sandwich both widthwise end portions of the movie film 1 between the picture gate 21 and the press plate 22 while the movie film 1 is running.

At this time, a lamp house 24 is provided on the left side of the picture gate 15 in the image reproducing unit 10, and a light beam for projection (hereinafter referred to as a light beam) is emitted from a light source (not shown) in the lamp house 22. , Which is called a projection light beam), which is incident on the movie film 1 through a projection shutter (not shown) and a picture aperture (not shown) provided in the picture gate 21. Here, the projection shutter provided in the lamp house 24 is adapted to repeat opening and closing in conjunction with the intermittent feeding operation of the movie film 1.

Further, in the video reproducing section 12, the transmitted light, which is the projection light beam transmitted through each image recording area 4 of the movie film 1, is picked up by the imaging device (FIG. By irradiating (not shown), image information based on the image pickup result by the image pickup device is output to the outside.

Subsequently, the movie film 1 sent from the intermittent feeding section 20 is engaged with the drum 27 of the analog voice reproducing section 13 via the sprocket 26. In this case, in the drum 27, the analog audio recording area 5 (FIG. 5) in which the analog audio information of the movie film 1 is optically recorded with an exposure width corresponding to its amplitude is avoided.
It is designed to come into contact with one surface side.

Here, since the analog audio recording area 5 of the movie film 1 is recorded 21 frames ahead of the corresponding image recording area 4, the analog audio reproducing section 13 is the same as that of the video reproducing section 12. The picture aperture 21 is provided at a position 21 frames ahead of the picture aperture provided in the picture gate 21 in the traveling direction of the movie film 1.

In the analog voice reproducing section 13,
The light beam emitted from the light source 28 is applied to the analog sound recording area 5 of the movie film 1, and the transmitted light is received by a photoelectric conversion element (not shown) inside the analog sound sensor 29. The photoelectric conversion element sends out a light reception signal having a signal level corresponding to the amount of received transmitted light to a subsequent electric circuit (not shown), and the electric circuit outputs an analog signal of the motion picture film 1 based on the signal level of the feeling signal. The analog audio information recorded in the audio recording area 5 is reproduced and sent to the subsequent signal processing circuit or speaker.

Thereafter, in the telecine device 10,
The movie film 1 is supplied to the take-up reel 14 via the rollers 30 and 31, so that the take-up reel 14 sequentially winds the movie film 1.

[0015]

By the way, in recent years, a method of reproducing digital audio information is more often used than a method of reproducing analog audio information, and particularly in a movie, a method of reproducing digital audio information is used. Account for the majority.

Therefore, in the method of reproducing the digital audio information, a movie film 40 as shown in FIG. 7 in which the same parts as those in FIG. In this movie film 40, the front surface and the back surface are coated to reduce the friction coefficient,
The area outside each of the perforation rows 3A, 3B in the width direction (hereinafter referred to as the perforation rows 3A, 3B).
Digital sound tracks 42A and 42B are provided in 41A and 41B.

However, the telecine device 10 shown in FIG. 6 has not been proposed yet for reproducing the digital audio information by using the movie film 40.

The present invention has been made in consideration of the above points, and proposes a telecine device capable of converting a video image obtained from a movie film into a television signal together with digital audio information corresponding to the video image. .

[0019]

In order to solve such a problem, in the present invention, the image recording area of the movie film is irradiated with the light source light from the light source and the transmitted light of the movie film is imaged by the image pickup means. A telecine device for converting a video image based on the image pickup result into a television signal is provided with a digital audio reproduction means for reproducing digital audio information recorded in a movie film corresponding to the video image.

In the present invention, the movie film is
A video is recorded for each image recording area, and digital audio information corresponding to the video is sequentially recorded so as to be adjacent to each image recording area in the width direction of the movie film, and the digital audio reproducing means stores the digital audio information. The number of image recording areas of the movie film corresponding to the delay time due to the digital signal processing for reproduction is provided in the direction opposite to the running direction of the movie film with respect to the image pickup means.

Since the digital sound reproducing means is arranged in the telecine device as described above, the digital sound information recorded in the movie film can be output in synchronization with the image obtained from the movie film. .

[0022]

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

In FIG. 1 in which parts corresponding to those in FIG. 6 are designated by the same reference numerals, numeral 50 indicates a telecine device as a whole,
A digital sound reproducing section 51 is provided at a predetermined position between the roller 16 and the sprocket 17 along the running path of the movie film 40.
6 has the same configuration as that of FIG.

In this case, in the movie film 40, the digital sound tracks 42 provided in the outer regions 6A and 6B of the perforation trains 3A and 3B, respectively.
Digital audio information and tracking information A and 42B are black (a part where the film is exposed) and white (a part where the film is not exposed) as shown in FIG.
Each of the predetermined recording areas 43 and 44 is represented by a value pattern.
Recorded in A and 44B. For this reason, in the telecine device 50, the digital sound reproducing section 51 reproduces the digital sound information and the tracking information recorded in the movie film 40.

Here, in practice, the digital voice reproducing section 51 is used.
As shown in FIG. 3, the halogen lamp 55 of the light source unit 52 is
Data detection light (not shown) emitted from the first and second hot mirrors 5 for cutting heat rays and infrared rays.
6A, 56B and the high-pass filter 57 for improving the S / N ratio and the optical fibers 58A, 58B through the film conveying drums 59A, 59B in the vicinity of the film film 4
It irradiates each of the 0 digital sound tracks 42A and 42B.

As a result, the digital pattern images L1A and L1B of the digital sound track obtained by transmitting the data detection light through the movie film 40 are line scanning CCDs through the object lenses 60A and 60B of the digital sound sensor 53, respectively. 61
It is incident on A and 61B. Each line scanning CCD 6
In 1A and 61B, the signal voltages obtained based on the sequentially irradiated digital pattern images L1A and L1B are supplied to the subsequent detection signal processing circuits 62A and 62B as detection signals S1A and S1B, respectively.

In the detection signal processing circuits 68A and 68B, the digital audio information and the tracking information recorded in the digital sound tracks 42A and 42B of the movie film 40 are sequentially output based on the supplied detection signals S1A and S1B, respectively. It reproduces and outputs it as digital reproduction signals S2A and S2B.

Here, in the digital sound reproduction section 51, after the data detection light is emitted from the light source section 52 to the movie film 1, until the digital reproduction signal S2 (S2A, S2B) is output from the digital sound sensor 53. In the meantime, a delay time for performing digital signal processing occurs.

By the way, in practice, the movie film 40 has
In consideration of the splicing of the movie film 40, the image recording area 4 and the digital sound tracks 42A and 42B corresponding to the image recording area 4 are recorded so as to be adjacent to each other in the width direction of the movie film 40 for each frame. Has been done. Therefore, when a delay time occurs due to the digital signal processing, the digital sound tracks 42A and 42A are transferred to the image recording area 4 of the movie film 40.
It becomes difficult to correspond B in real time.

Therefore, before the image recording area 4 of the movie film 40 is picked up by the video reproducing section 12, that is, before the delay time due to the digital signal processing, each image is recorded at a position adjacent to the image recording area 4. It is necessary to play the digital sound tracks 42A and 42B. For this reason, the digital audio reproduction section 51 moves backward from the picture aperture provided in the picture gate 21 of the video reproduction section 12 by a predetermined number of frames of the movie film 40 corresponding to the delay time due to the digital signal processing. It is arranged to be provided on the supply reel 11 side.

Next, FIG. 4 shows a television signal conversion circuit 70 provided in the telecine device 50 (FIG. 1). The television signal conversion circuit 70 is a digital audio sensor 5.
3, the television signal TEL is generated based on each output signal obtained from the analog audio sensor 29 and the CCD camera 25.

The digital sound sensor 53 in the digital sound reproduction section 51 supplies the digital reproduction signal S2 to the digital signal processing circuit 71, performs predetermined signal processing in the digital signal processing circuit 71, and then performs the digital sound processing. Switching circuit 73 as output signal S5
To send to.

The analog audio sensor 29 in the analog audio reproducing unit 13 supplies the analog reproduction signal S3 obtained by reproducing the analog audio information recorded in the analog audio recording area 5 of the movie film 1 to the amplifier circuit 72. After being amplified by the amplifier circuit 72, it is sent to the switching circuit 73 as an analog audio output signal S6.

The switching circuit 73 selectively sends either the digital audio output signal S5 or the analog audio output signal S6 to the signal MIX circuit 75 based on a control command given from the outside.

Further, the CCD camera 25 of the image reproducing section 12
Supplies the video reproduction signal S4, which is video information based on the image pickup result by the image pickup device, to the video signal processing circuit 74, performs predetermined signal processing in the video signal processing circuit 74, and then outputs the video output signal S7. As signal MIX circuit 7
5

In this way, the signal MIX circuit 75 mixes either the digital audio output signal S5 or the analog audio output signal S6 with the video output signal S7, and thereafter,
This is output to the outside as a television signal TEL. In addition,
The externally output television signal TEL is supplied to, for example, a television device (not shown) so that an image based on the television signal can be displayed on the screen in the television device.

In the above structure, the image recording area 4 and the digital sound tracks 42A and 42B corresponding to the image recording area 4 are arranged adjacent to each other in the width direction of the movie film 40 for each frame of the movie film 40. It is recorded in. When the movie film 40 is reproduced by using the conventional telecine device 10 (FIG. 6), a delay time is generated due to the digital signal processing for reproducing the digital sound tracks 42A and 42B.

Therefore, in the telecine device 50, the digital audio reproduction section 51 is provided with the movie film 4 corresponding to the delay time due to the digital signal processing with respect to the picture aperture provided in the picture gate 21 of the video reproduction section 12.
By providing a predetermined number of frames of 0 on the supply reel 11 side, each digital sound track 42A can be recorded in the image recording area 4 of the movie film 40 during reproduction.
42B can be dealt with in real time.

As a result, the telecine device 50 can output not only the analog audio information recorded in the movie film 40 but also the digital audio information in synchronization with the image obtained from the movie film 40.

According to the above-mentioned structure, in the telecine device 50, the digital audio reproduction section 51 corresponds to the delay time due to the digital signal processing with respect to the picture aperture provided in the picture gate 21 of the video reproduction section 12. By providing a predetermined number of frames of the movie film 40 on the supply reel 11 side, it is possible to realize a telecine device capable of converting an image obtained from the movie film into a television signal TEL together with digital audio information corresponding to the image. .

In the above embodiment, the case where the present invention is applied to the telecine device 50 has been described, but the present invention is not limited to this, and is applied to other various devices for recording or reproducing various films. May be.

Further, in the above-mentioned embodiment, the present invention is applied to the outer regions 6A and 6B of the perforation rows 3A and 3B.
Film film 4 with digital audio information recorded on
Although the case where the present invention is applied to the telecine device 50 that reproduces 0 is described, the present invention is not limited to this, and, for example, information (voice or tracking information, etc.) only in the outer area 6A or 6B of one perforation sequence 3A or 3B. The present invention can also be applied to a telecine device that reproduces a movie film in which is recorded, a movie film in which information is recorded in the area between the perforations 2, and the like.

[0043]

As described above, according to the present invention, the image recording area of the movie film is irradiated with the light source light from the light source, and the transmitted light of the movie film is imaged by the image pickup means. In a telecine device for converting an image into a television signal, by providing a digital audio reproduction means for reproducing the digital audio information recorded in the movie film corresponding to the image, the image obtained from the film film is adapted to the image. It is possible to realize a telecine device that can be converted into a television signal together with digital audio information.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an embodiment of a telecine device according to the present invention.

FIG. 2 is a conceptual plan view for explaining a digital sound track.

FIG. 3 is a conceptual plan view showing details of a digital sound reproducing unit.

FIG. 4 is a block diagram showing a configuration of a television signal conversion circuit.

FIG. 5 is a conceptual plan view for explaining a conventional movie film.

FIG. 6 is a conceptual plan view for explaining a conventional movie film.

FIG. 7 is a schematic plan view showing a conventional telecine device.

[Explanation of symbols]

1, 40 ... Movie film, 4 ... Image recording area, 5 ...
… Analog audio recording area, 10,50 …… Telecine device, 11 …… Supply reel, 12 …… Video playback section, 13 ・ ・ ・
… Analog voice playback unit, 14 …… Take-up reel, 25 ……
CCD camera, 29 ... Analog voice sensor, 42A,
42B: Digital sound track, 51: Digital sound reproduction section, 53: Digital sound sensor, 7
0: TV signal conversion circuit.

Claims (2)

[Claims] 1. A telecine device for converting an image based on the image pickup result into a television signal by irradiating a light source light from a light source to an image recording area of the movie film and capturing the transmitted light of the movie film by an image pickup means. 2. A telecine device characterized by comprising digital audio reproduction means for reproducing the digital audio information recorded in the movie film corresponding to the video. 2. The movie film has the video recorded in each image recording area, and digital audio information corresponding to the video is sequentially recorded so as to be adjacent to each of the image recording areas. The reproducing means is arranged in the direction opposite to the running direction of the movie film with respect to the image pickup means by the number of the image recording areas of the movie film corresponding to the delay time due to the digital signal processing for reproducing the digital audio information. The telecine device according to claim 1, wherein the telecine device is provided.