JPH09325437A - Recording device of movie film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record audio data, test pattern, and character information so as not to waste test pattern, character information, etc., which are recorded on a. film even if the film is cut at a position where pop sound is recorded. SOLUTION: A system controller 11 detects pop sound through a pop sound detection circuit 10 and controls the change-over of a change-over circuit 7 based on the result of the detection. The change-over circuit 7 outputs audio data supplied through an encoding circuit 1, etc., a character pattern from a character pattern generation circuit 5, and a test pattern from a test pattern generation circuit 6 at predetermined timing, respectively. An LED 9 records the audio data, the character pattern, etc., from the change-over circuit 7 at predetermined positions of a movie film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motion picture film recording apparatus for recording audio data on a digital sound track.

[0002]

2. Description of the Related Art Generally, motion picture films are classified into reversal color films (hereinafter referred to as reversal films), color negative films (hereinafter referred to as negative films), and color positive films (hereinafter referred to as positive films) when classifying so-called multilayer color films. ) There is.

Since a reversal film can obtain a positive image in a relatively short time, it is used for direct positive recording, for example, in television broadcasting. On the other hand, the negative film is subjected to development processing after photographing to obtain a negative image having a complementary color relationship with the brightness / hue of the subject. The positive film is combined with a negative film, given predetermined light from the negative film side, baked, and then developed to obtain a positive image.

Here, the audio data is, for example, as shown in FIG.
As shown in FIG. 3, the recorded sound is recorded in a dod display on the digital soundtrack of the motion picture film. Therefore, before printing the audio data of the negative film on the positive film, a baking test signal (test pattern) is recorded in advance so that the dot display of the audio data is recorded clearly on the positive film. Need to test.

In the burn-up test, a test pattern is printed on a film of the same type as the transferred positive film, for example, by changing the light amount of the recording light source, the printed test pattern is examined, and the recording light source is printed on the positive film. It determines the state of.

Specifically, in the burn-up test, a burn-in test signal is first recorded on the negative film to be transferred. The film for burn-in test is combined with a negative film, and the burn-in test signal under various light sources is printed by changing the light amount from the negative film side. Then, in the baking degree test, the light amount of the test pattern at which the light amount is clearest is checked to determine the most appropriate light amount.

The burn-up test signal thus recorded is usually recorded in a digital sound track together with audio data. Further, in the digital sound track, for example, a character pattern indicating the numerical value of the light amount of the emitted light is recorded, and further, a non-recorded area used for another burning degree test or the like is provided.

[0008]

By the way, in a movie film, an audio signal is recorded in an analog sound track and a pop sound is also recorded. The pop sound is recorded at a predetermined position with respect to the head position of the audio signal recorded on the analog sound track, and indicates a position suitable for cutting and using a movie film. Therefore, the recording position of the pop sound has a correlation with the position where the audio signal is recorded, but has no relationship with the recording position of the test pattern or the like on the digital sound track.

Therefore, the film for baking degree test is
If the pop sound is cut at the position where it is recorded, the test pattern, character information, unrecorded area, etc. are also cut together, and the firing degree test signal cannot be used.

On the other hand, if these test patterns and the like are left on the film even after being cut off, there is a case where a useless portion is left on the film itself.

The present invention has been made in view of the above circumstances, and even if the film is cut at the position where the pop sound is recorded, the test patterns, character information, etc. recorded on the film are wasted. So that there is nothing to do,
An object of the present invention is to provide a movie film recording apparatus capable of recording audio data, test patterns, and character information.

[0012]

In order to solve the above-mentioned problems, a motion picture film recording apparatus according to the present invention comprises an encoding means for encoding audio data, and a pop sound data included in the audio data. A pop sound detecting means for detecting the following, a character pattern data generating means for generating character pattern data based on the character data, a test pattern data generating means for generating test pattern data based on the burn-up test signal, and the above encoding Switching means for outputting the audio data or the character pattern data or the test pattern data encoded by the means, and when the pop sound detecting means detects the pop sound data, the audio data, the character pattern data and the test pattern data are output. The output switching of the switching means is controlled so as to output in a predetermined order. And a control means for, by changing the light emission state of the recording light source in accordance with data said switching means outputs, to the digital sound track, test pattern, character pattern, and a recording means for recording audio data.

When the pop sound detecting means detects the pop sound included in the audio data, the control means causes the switching means to sequentially output the test pattern data, the character pattern data and the audio data. The recording means records the test pattern on the digital sound track at a position opposite to the position where the pop sound is recorded,
Then, the character pattern and audio data are recorded.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a motion picture film for recording a pop sound and an audio signal in an analog sound track and also recording audio data in a digital sound track based on audio data supplied from the outside. It is a recording device.

An embodiment of a motion picture film recording apparatus according to the present invention will be described below with reference to the drawings.

The motion picture film recording apparatus according to the present invention comprises:
For example, as shown in FIG. 1, an encoding circuit 1 that encodes audio data, an ECC encoder 2 that adds an error correction code to the encoded audio data from the encoding circuit 1, and an audio from the ECC encoder 2 And a sync data adding circuit 3 for adding sync data to the data.

The motion picture film recording apparatus comprises a capture circuit 4 to which character data, burn-in test data, etc. are supplied from the outside, and a character pattern data generation circuit 5 which generates character pattern data based on the character data. And a test pattern data generation circuit 6 for generating test pattern data based on the burn-up test data.

Further, in the above-mentioned motion picture film recording apparatus, any one of the audio data from the sync data adding circuit 3, the character pattern data from the character pattern data generating circuit 5 and the test pattern data from the test pattern data generating circuit 6 is used. A switching circuit 7 for outputting, a light emitting diode (LED) driving circuit 8 for driving a light emitting diode based on the data from the switching circuit 7, and a light emitting state according to the driving of the LED driving circuit 8 change the digital sound. LE that records audio data on a track
D9, a pop sound detection circuit 10 for detecting a pop sound included in the audio data, and a pop sound detection circuit 10
And a system controller 11 that controls the output switching of the switching circuit 7 based on the detection result of 1.

Although not shown, the movie film recording apparatus includes recording means for recording an audio signal and a pop sound on an analog sound track based on the supplied audio data.

In the motion picture film recording apparatus configured as described above, the encoding circuit 1 combines the audio data supplied from the outside with band division encoding, orthogonal transform encoding, and bit allocation. A high-efficiency encoding process is performed to compress the data amount to, for example, 1/5, and the encoded audio data is supplied to the ECC encoder 2.

The ECC encoder 2 adds an error correction code of C2 parity and C1 parity using a cross interleaved Solomon code to the supplied audio data, and supplies this audio data to the synchronous data adding circuit 3. Further, the ECC encoder 2 uses the character data from the capture circuit 4 as user data and adds an error correction code in the same manner as the audio data. This user data is recorded in a digital sound track together with audio data, reproduced by a predetermined reproducing device, and displayed as, for example, a caption of a translated sentence of a movie.

The sync data adding circuit 3 adds sync data, a tracking pattern and the like to the supplied audio data and supplies the audio data to the switching circuit 7.

On the other hand, the take-in circuit 4 is an interface for converting data supplied from, for example, a computer (not shown) provided externally into data of a predetermined system, and indicates the light amount of, for example, the LED 9 supplied from the computer. Converts character data, baking test data, etc. into a specified format. Then, the acquisition circuit 4 supplies the character data to the character pattern data generation circuit 5 and the burn-up test data to the test pattern data generation circuit 6.

The character pattern data generation circuit 5 generates character pattern data, which is data of a character pattern formed by a dot, based on the supplied character data, and supplies this to the switching circuit 7. In the character pattern data,
The data is not limited to the data indicating the dodge pattern of a specific character, and includes the data indicating no recording.

The test pattern data generation circuit 6 generates a test data pattern, which is data of a test pattern composed of a dod, on the basis of the supplied baking degree test data, and supplies this to the switching circuit 7.

The switching circuit 7, based on a system controller 11 described later, sets any one of audio data, character pattern data, and test pattern data to L level.
It is supplied to the ED drive circuit 8.

The LED drive circuit 8 drives the LED 9 according to the supplied data. And LED9 is LED
In response to the drive of the drive circuit 8, audio data is sequentially recorded on the digital sound track with a test pattern, a character pattern indicating a specific character, and a non-recorded area sandwiched therebetween.

On the other hand, the pop sound detection circuit 10 detects the pop sound included in the audio data supplied from the outside. The pop sound detection circuit 10 is, for example, as shown in FIG. 2, a comparator that compares audio data supplied from the outside with threshold data supplied from the system controller 11, and the level of the threshold data. The pop sound detection data is output when the level of the audio data is higher than that.

When the system controller 11 supplies pop sound detection data from the pop sound detection circuit 10, the switching circuit 7 causes test pattern data, character pattern data,
The output switching of the switching circuit 7 is controlled so that the audio data is sequentially output.

Therefore, the above-mentioned movie film recording apparatus can record the test pattern at a position on the digital sound track in the width direction of the film with respect to the position of the pop sound recorded on the analog sound track. Audio data can be recorded in sequence on a digital sound track whose phase is delayed with respect to the position, with a character pattern and a non-recorded area interposed.

The motion picture film 20 recorded by the motion picture film recording device is, for example, as shown in FIG. 3, a picture area 21 which is an image recording area and both sides of the picture area 21 for winding the motion picture film 20. And a perforation 22 for winding the film.

Further, the motion picture film 20 has an analog sound track 2 linearly provided in one of two gaps existing between the picture area 21 and each perforation 22 along the traveling direction of the film.
3 and a digital sound track 24 linearly provided in two gaps existing between both ends of the film and each perforation 22 along the traveling direction of the film.

A pop sound 25 is recorded on the analog sound track 23, and an audio signal 26 is placed at a predetermined position slightly behind the position where the pop sound 25 is recorded.
Is recorded.

A test pattern 27 is recorded on the digital sound track 24 in opposition to the pop sound 25 recorded on the analog sound track 23, and then a character pattern 28 indicating a specific character is recorded. The digital sound track 24 has a non-recorded area 29 after the character pattern 28 is recorded, and the audio data 30 is recorded after that.

That is, the motion picture film recording apparatus according to the present invention is capable of recording the test pattern 27 on the digital sound track 24 of the motion picture film 20 and forming the non-recording area 29 by being able to prepare the motion picture film 20. The audio data 30 can be recorded between them. Therefore, the user can record the burn-up test signal again in the non-recorded area 29 to determine the burn-up degree of the film in the negative film or the positive film and perform various experiments.

The motion picture film recording apparatus can record the test pattern 27 at a position opposite to the pop sound 25 indicating the position where the film is cut off. Therefore, even if the user cuts off the film at the position where the pop sound is recorded, the user can leave the character pattern 28 on which information such as the light amount of the recording light source is recorded without cutting it off. Management can be facilitated.

Furthermore, the above-mentioned motion picture film recording apparatus is
Test pattern 2 on the digital soundtrack 24
Since the audio data 30 can be recorded by sandwiching 7, the character pattern 28 and the non-recorded area 29, it is possible to effectively utilize the area of the digital sound track 24 and eliminate a wasteful portion of the film.

[0038]

As described in detail above, the motion picture film recording apparatus according to the present invention can record a test pattern at a position on the digital sound track opposite to the position where the pop sound is recorded. Therefore, even if the user cuts off the film at the position where the pop sound is recorded, the user can leave the character pattern on which the information such as the light amount of the recording light source is recorded without cutting it off, so that the movie film can be managed. Can be easy.

Further, when the movie film recording apparatus detects a pop sound included in the audio data supplied from the outside, it records a test pattern on the digital sound track, and interposes the non-recorded area to insert the audio data. Can be recorded. As a result, the user can record, for example, a burn test signal in the non-recorded area to determine the burn of a negative film or a positive film and perform various experiments.

Further, the above-mentioned motion picture film recording apparatus is
Since audio data can be recorded in the digital sound track with the test pattern, the character pattern, and the non-recorded area sandwiched between them, the area of the digital sound track can be effectively used and the useless portion of the film can be eliminated.

[Brief description of drawings]

FIG. 1 is a block diagram showing a specific configuration of a movie film recording apparatus according to the present invention.

FIG. 2 is a diagram for explaining a pop sound detection circuit of the movie film recording apparatus.

FIG. 3 is a plan view of a motion picture film recorded by the motion picture film recording apparatus.

FIG. 4 is an enlarged view of a main part of audio data recorded in a digital sound track of a movie film.

[Explanation of symbols]

 1 Encoding Circuit 5 Character Pattern Data Generation Circuit 6 Test Pattern Data Generation Circuit 7 Switching Circuit 9 LED 10 Pop Sound Detection Circuit 11 System Controller

Claims (2)

[Claims] 1. A motion picture film recording apparatus for recording audio data, character patterns, and test patterns on a digital sound track of a motion picture film, and recording a pop sound signal on an analog sound track of the motion picture film, wherein audio data is encoded. Encoding means, pop sound detecting means for detecting pop sound data included in the audio data, character pattern data generating means for generating character pattern data based on the character data, and a burning degree test signal based on the burning degree test signal. Test pattern data generating means for generating test pattern data, switching means for outputting the audio data encoded by the encoding means, the character pattern data or the test pattern data, and the pop sound detecting means for producing a pop sound. Detect data Then, the control means for controlling the output switching of the switching means so as to output the test pattern data, the character pattern data and the audio data in a predetermined order, and the light emission of the recording light source according to the data output by the switching means. A movie film recording apparatus, comprising recording means for recording a test pattern, a character pattern, and audio data on the digital sound track by changing a state. 2. A control for controlling output switching of the switching means so that when the pop sound detecting means detects pop sound data, test pattern data and character pattern data are output and audio data is output after a predetermined period. Means and the recording means, in the digital soundtrack,
2. The motion picture film recording apparatus according to claim 1, wherein after recording the character pattern, a non-recording area is provided and then the audio data is recorded.