JPH09325438A - Movie film and recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the alignment of a position of a negative film visually without recording and detecting pop sound. SOLUTION: Audio data which is encoded and quantized by an encoding circuit 11 is supplied to an LED drive circuit 14 and a requantizing circuit 16 through an ECC encoder 12, etc. The LED drive circuit 14 drives an LED 15 based on the audio data which is supplied to record the audio data on a movie film. On the other hand, the requantizing circuit 16 generates a positioning signal for displaying dot based on the audio data which is requantized and supplies the positioning signal to an LED 18 through an LED drive circuit 17. An LED 18 records a display pattern which indicates a predetermined position of the audio data and can be seen visually at a predetermined position of the 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 in which audio data is recorded on a negative film.

[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 the negative film, given predetermined light from the negative film side, and subjected to development processing to obtain a positive image.

Since a video and audio (audio data) are usually recorded on different negative films, a positive film is created by combining the video and audio data of the negative film. Therefore, in the positive film, finally, the image and the audio data are recorded after the negative film on which the image is recorded and the negative film on which the audio data is recorded are aligned. This alignment is performed by recording a pop sound at a predetermined position on each analog sound track of the negative film on which video is recorded and the negative film on which audio data is recorded, and detecting this pop sound. It was

[0005]

By the way, the above-mentioned alignment did not cause a problem when recording video and independent audio data, but it was detected when recording video and a plurality of audio data. There is a problem that it is impossible to know which audio data the pop sound is. Therefore, the pop sound recorded on the analog sound track cannot serve as a position detecting means of the audio data.

Further, in recent years, analog sound tracks have become unnecessary due to the widespread use of digital recording technology. However, for the above alignment, it was necessary to purposely provide an analog sound track for recording a pop sound.

The present invention has been made in view of the above circumstances, and a motion picture film and recording apparatus capable of easily aligning a negative film by visual observation without recording and detecting a pop sound. The purpose is to provide.

[0008]

In order to solve the above-mentioned problems, a motion picture film according to the present invention is a motion picture film in which audio data is recorded in a plurality of digital sound tracks. Is provided along the digital sound track in the image recording area, and a display pattern indicating a predetermined position of each audio data is recorded on each of the alignment tracks. Characterize.

The motion picture film recording apparatus according to the present invention changes the light emission state of the recording light source based on the audio data generating means for encoding audio signals to generate audio data. By doing so, the audio data recording means for recording the audio data in the digital sound track corresponding to the audio data, and the light emission state of the light source for recording based on the audio data are changed. And a display pattern recording means for recording a visible display pattern indicating a predetermined position of the audio data on a predetermined alignment track among the alignment tracks provided corresponding to.

Thus, in the motion picture film recording apparatus, the light emitting state of the recording light source is changed based on the audio data, so that the film is provided at a predetermined position in the image recording area along the digital sound track. A visible display pattern indicating a predetermined position of the audio data is recorded on the aligned track. Therefore, in the motion picture film, a display pattern indicating a predetermined position of each audio data is recorded on each alignment track provided along the digital sound track in the image recording area.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a motion picture film and recording apparatus according to the present invention will be described below with reference to the drawings.

The motion picture film 1 is suitable for a negative film for audio, for example, and as shown in FIG. 1, a picture area 2 which is an image recording area and a motion picture film 1
Film perforations 3 provided on both sides of the picture area 2 to wind the film.
With.

The motion picture film 1 has an analog soundtrack linearly provided in one of two gaps existing between the picture area 2 and each perforation 3 along the film advancing direction. Four
And a digital sound track 5 (5L, 5L, 5L, which is linearly provided in the two gaps existing between both ends of the film and each perforation 3 along the traveling direction of the film.
5R) and a digital sound track 6 provided between the perforations 3 continuous in the traveling direction, and audio data is recorded on these digital sound tracks 5 and 6.

The motion picture film 1 has an alignment track 7 in which a display pattern corresponding to the audio data recorded in the digital sound track 5 is recorded, and an audio data recorded in the digital sound track 6 is recorded in the alignment track 7. The alignment track 8 on which the corresponding display pattern is recorded.

The alignment track 8 is recorded in the picture area 2. In picture area 2,
Although the image that is originally projected is recorded, the image is not recorded on the audio negative film, and only the display pattern is recorded as described above.

Audio data of, for example, a center channel (C), a center left channel (LC), a left channel (L), a surround left channel (SL), and a subwoofer channel (SW) is recorded on the digital sound track 5L. Right mix channel (R
In M), audio data of the right channel (R), the center right channel (RC), and the surround right channel (SR) are recorded. That is, in the film block 6L, the channels (C), (LC),
Audio data of (L), (SL), (SW), (RM) is recorded as a group of left channel systems.

Audio data of, for example, a subwoofer channel (SW), a center right channel (RC), a right channel (R), a surround right channel (SR), and a center channel (C) are recorded on the digital sound track 5R. Left mix channel (L
M) audio data is formed and recorded from left channel (L), center left channel (LC), and surround left channel (SL) audio data.
That is, the film block 6R includes channels (SW), (RC), (R), (SR), (L).
The audio data of M) and (C) are recorded as a group of right channel systems.

Further, on the alignment track 7, as shown in FIG. 2, for example, a waveform displayed in black and white based on the level of audio data of the right mix channel (RM) is recorded.

Similarly, the alignment track 8 is also recorded with a waveform displayed in black and white based on the level of audio data of the right mix channel (RM), for example. The alignment track 8 is
The dod display on the alignment track 7 is reversed in black and white and displayed as a dod. As a result, when a plurality of digital data are recorded, the audio data can be visually distinguished from each other.

Further, the alignment tracks 7 and 8 have pop sound indications 7a and 8a indicating the positions of the pop sounds recorded on the analog sound track recorded thereon, and the audio signals recorded on the analog sound track are reproduced. You can check the position of the pop sound without doing.

In the motion picture film 1 configured as described above, each alignment track corresponding to each digital sound track is provided in the image recording area along each digital sound track, and a display pattern is provided on this alignment track. It is recorded. Therefore, the user can visually confirm the display pattern indicating the predetermined position of the audio data. Therefore, when the digital sound of different systems is recorded several times on the movie film, the recording phase of each can be accurately measured. And it can be easily confirmed.

Further, since the above-mentioned motion picture film is provided with a waveform in which black and white of the dot display are inverted for each audio data, the number of times of audio recording can be easily identified.

In the above-mentioned motion picture film, it is not necessary to record, for example, a pop sound at a predetermined position on the analog sound track, and to detect the position where the pop sound is recorded to align with the image. It is possible to create a motion picture film with only digital sound without recording. In addition, since it is not necessary to record the pop sound for alignment, the steps of editing and analog recording can be omitted, which can contribute to the reduction of production cost.

Further, in this motion picture film 1, the picture area 2 which is not used in the negative film for voice is used.
Since the alignment tracks 7 and 8 are provided in, the entire film can be effectively used.

Next, a description will be given of a motion picture film recording apparatus 10 according to the present invention capable of recording audio data on the motion picture film 1 and recording a waveform of a dot display which is a display pattern.

The motion picture film recording apparatus 10 is, for example, as shown in FIG. 3, an encoding circuit 11, an ECC encoder 12, a sync data adding circuit 13, an LED drive circuit 14, and an LED 15 for recording audio data. When,
A requantization circuit 16, an LED drive circuit 17, an LED 18 for recording a display pattern, and a system controller 19 for controlling the ECC encoder 12 are provided.

In the motion picture film recording apparatus 10 configured as described above, the encoding circuit 11 uses, for example, an ECC encoder to encode audio data obtained by encoding / quantizing an audio signal supplied from an audio recorder. 12 and the requantization circuit 16. The ECC encoder 12 adds an error correction code to the audio data supplied from the encoding circuit 11 and supplies the audio data and the like to the synchronous data adding circuit 13. The sync data adding circuit 13 adds sync data to the supplied audio data and the like, and the LED data is sent via the LED drive circuit 14 to the LED
The audio data and the like are supplied to 15. LED15
Changes the light emitting state based on the supplied audio data or the like via the LED drive circuit 14 to record the audio data in a digital sound track corresponding to the audio data.

On the other hand, the requantization circuit 16 requantizes the supplied audio data, generates an alignment signal for dod display based on the requantized audio data, and outputs this alignment signal. It is supplied to the LED 18 via the LED drive circuit 17. LED18 is
The light emission state changes based on the supplied alignment signal, and it is possible to visually check the specified position of the audio data on a specified alignment track among the alignment tracks provided for each digital sound track. Record the display pattern. This display pattern is, for example, a waveform based on black-and-white dot display. When the audio data to be recorded is different, the waveform is recorded by inverting the black-and-white dot display.

Therefore, the motion picture film recording apparatus 10 is, for example, a digital soundtrack 5L, 5R.
It is possible to record a waveform, for example, a dot display as a display pattern on the alignment track 7 while recording the audio data. Further, the motion picture film recording apparatus 10 records audio data of a system different from that recorded on the digital sound tracks 5L and 5R on the digital sound track 6 while displaying as a display pattern on the alignment track 8 for example. The displayed waveform can be recorded.

The motion picture film recording apparatus 10
May be independently provided according to the audio data to be recorded.

Next, a movie film recording apparatus 20 capable of recording a display pattern on the alignment track 7 while recording audio data on the digital sound tracks 5L and 5R, for example, will be described.

As shown in FIG. 4, the movie film recording apparatus 20 includes a mixer 21L for forming a left mix channel (LM) from L, LC and SL, and R and R.
A mixer 21R that forms a right mix channel (RM) from C and SR, encoding circuits 22a to 22f that encode left channel audio data, and an encoding circuit 22g that encodes right channel audio data.
22m, a left channel multiplexer 23L for serially transmitting left channel audio data and the like encoded by the encoding circuits 22a to 22f, and a right channel system encoded by the encoding circuits 22g to 22m. And a right channel multiplexer 23R for serially transmitting the audio data and the like.

The motion picture film recording apparatus 20 includes an ECC encoder 25L for adding an error correction code (ECC) to left channel audio data, and a multiplexer 2.
A delay circuit 24R that delays and outputs a right channel audio data from 3R by a predetermined time, an ECC encoder 25R that adds an error correction code to the right channel audio data from the delay circuit 24R, and each audio data Data addition circuit 2 for synchronizing
6L and 26R, and light emitting diodes (LED) 28L and 28R for recording audio data of each channel to which predetermined synchronization data is added on each digital sound track 5L and 5R of the movie film 1, respectively.

Further, the motion picture film recording apparatus 20 requantizes the audio data of the right mix channel (RM), for example, in order to record a display pattern such as a waveform on the alignment track 7 and the like, and is requantized. A requantization circuit 29 for generating an alignment signal for dod display, which will be described later, based on the audio data; and a requantization circuit 2
LED described later based on the alignment signal supplied from 9
An LED drive circuit 30 that drives 31 and an LED 31 that records a waveform of a dot display that is a display pattern on the alignment track 7 or the like of the movie film 1 according to the drive of the LED drive circuit 30.

In the motion picture film recording apparatus 20 configured as described above, as shown in FIG. 4, the audio data Cn of the center channel (C) is encoded by the encoding circuits 22a, 22a.
The audio data SWn of the subwoofer channel (SW) are supplied to the encoding circuits 22e and 22k, respectively. Also, each channel (L), (L
C), audio data Ln, LCn, SL of (SL)
n is supplied to the encoding circuits 22b to 22d,
The audio data Rn, RCn, and SRn of the channels (R), (RC), and (SR) are respectively encoded by the encoding circuit 2.
2h to 22j. In addition, audio data Ln of each channel (L), (LC), (SL)
LCn and SLn are respectively supplied to the mixer 21L, and audio data Rn, RCn and SRn of the respective channels (R), (RC) and (SR) are respectively supplied to the mixer 21R.

The mixer 21L has channels (L),
Audio data Ln, LCn, (LC), (SL)
The left mix channel (LM) audio data LMn is formed from SLn and is supplied to the encoding circuit 22m. In addition, the mixer 21R is for each channel (R),
(RC), (SR) audio data Rn, RCn,
Audio data RMn of the right mix channel (RM) is formed from SRn and is supplied to the encoding circuit 22f.

Each of the encoding circuits 22a to 22f has channels (C), (L), (LC), (SL), (S).
W '), (RM) audio data Cn, Ln, L
Cn, SLn, SW'n, and RMn are each subjected to high-efficiency coding processing in which band division coding, orthogonal transform coding, bit allocation, and the like are combined to compress the data amount to, for example, ⅕, and the multiplexer 23L Supply to. The encoding circuit 22f also supplies the requantization circuit 29 with the data that has been subjected to the efficiency encoding process and compressed to ⅕.

The encoding circuits 22g to 22m are
(C ′), (R), (RC), (SR), (SW),
(LM) audio data C′n, Rn, RCn,
SRn, SWn, LMn are subjected to high-efficiency coding processing combining band division coding, orthogonal transform coding, bit allocation, etc. to compress the data amount to, for example, ⅕, and supply these to the multiplexer 23R.

The multiplexer 23L is provided in each encoding circuit 2
The left channel audio data supplied in parallel from 2a to 22f is serially converted into the
It is supplied to the encoder 25L.

The multiplexer 23R serially converts the right channel audio data supplied in parallel from each of the encoding circuits 22g to 22m, and supplies this to the delay circuit 24R.

The delay circuit 24R delays the right channel audio data so that the recording positions of the left channel audio data and the right channel audio data are deviated by, for example, 17.8 frames as described above. And supplies it to the ECC encoder 25R.

Each of the ECC encoders 25L and 25R adds a signal for error correction of C2 parity and C1 parity using a cross interleaved Reed-Solomon code to each audio data, and supplies this to the synchronous data adding circuits 26L and 26R. To do.

The sync data adding circuits 26L and 26R add sync data to the supplied audio data. Here, the synchronous data adding circuits 26L and 26R form a film block 6 which is one unit of recording by adding C1 parity described later to the audio data and performing interleave processing. Then, head data including synchronization data, tracking pattern, identification information and the like is added to each film block 6, and this is supplied to the LED drive circuits 27L and 27R.

The LED drive circuits 27L and 27R use the LED 28 based on the supplied data of the film block 6.
The light emission amounts of L and 28R are adjusted, and each audio data is digitally recorded on each digital sound track 5L and 5R of the motion picture film 1 for each film block.

The movie film recording apparatus 20 is used.
It is also possible to record user data, which will be described later, for example, subtitle information of a translated sentence of a movie in the digital sound track 7 or the like.

On the other hand, the requantization circuit 29 includes the encoding circuit 2
The data supplied from 2f is quantized, an alignment signal for dot display is generated based on the quantized data, and this alignment signal is supplied to the LED drive circuit 30. The LED drive circuit 30 adjusts the light emission amount of the LED 31 based on the supplied alignment signal and records the waveform in the picture area 2 as a display pattern. At this time, the LED drive circuit 30 records the waveform of the black-and-white dot display on the alignment track 7 or the like, as shown in FIG. 2, for example.

When the supply of the quantized data to the requantization circuit 29 is stopped and resupplied, the system controller 33 controls the LED drive circuit 30 so that, for example, the black and white dot display is inverted and recorded. To do.

The motion picture film recording apparatus 20 records a waveform according to the above-described operation and also records audio data for each film block 6. The film block 6 is formed by interleaving an ECC full block configured by adding two parity blocks to 14 compression processing blocks.

Specifically, the compression processing block of the left channel system has 1 byte (1
Byte = 1 symbol = 8 bits: header H0 of b0 to b7) and level control data Le0 of 3 bytes
Le2, 182 bytes of center channel (C) audio data C0 to C181, and 182 bytes of left center channel (LC) audio data LC0
To LC181, 182 bytes of left channel (L) audio data L0 to L181, and 182 bytes of surround left channel (SL) audio data SL
0 to SL181, 114 bytes of right mix channel (RM) audio data Rm0 to Rm113,
6-byte subwoofer channel (SW ') audio data SW'0 to SW'5 and subtitle information 8
It is composed of byte user data (UD) U0 to U7.

The level control data is
The right-channel audio data level, the right-center channel audio data level, and the surround right-channel audio data level when the right mix channel audio data is formed are each indicated by one byte. . The level of the audio data of the right mix channel is obtained by dividing each of the above three levels by 3, and is represented by the following equation.

RM = (RC + R + SR) / 3 Similarly, the compression processing block data of the right channel system is
For example, as shown in FIG. 6, a 1-byte header H0 and 3
Byte level control data Le0 to Le2;
62 bytes of subwoofer channel (SW) audio data SW0 to SW61 and 182 bytes of right center channel (RC) audio data RC0 to RC
181 and 182 bytes of right channel (R) audio data R0 to R181 and 182 bytes of surround right channel (SR) audio data SR0 to S
R181 and a 113-byte left mix channel (L
M) audio data Lm0 to Lm113 and 126
Byte center channel audio data C'0
To C'125 and 8-byte user data (US) U0 to U7, which are information on subtitles and the like.

The level control data is
When the audio data of the left mix channel is formed, the level of the audio data of the left channel, the level of the audio data of the left center channel, and the level of the audio data of the surround left channel are each indicated by 1 byte. The level of the audio data of the left mix channel is obtained by dividing each of the above three levels by 3, and is represented by the following equation.

LM = (LC + L + SL) / 3 The compression processing block is, for example, 4 as shown in FIG.
It consists of 860 bytes of 3 symbols x 20 symbols,
Furthermore, C1 parity consisting of 15 symbols × 20 symbols is added.

Then, as shown in FIG. 8, a total of eight compression processing blocks # 0 to # 7, that is, the first to eighth compression processing blocks
A C top half block is formed, and C2 parity and C1 parity of 43 symbols × 32 symbols are further added.

Similarly, as shown in FIG. 9, ninth to sixteenth
Compression processing blocks # 8 to #F are collected to form an ECC bottom half block, and 43 symbols ×
C2 parity and C1 parity of 32 symbols are added.

Then, as shown in FIG.
ECC top half-block audio data T000 to T191 for symbols (including the C2 parity of 32 symbols described above) and E for 192 symbols described above.
CC bottom half block audio data B000
Audio data is extracted from B191 to B191 one symbol at a time, and these are interleaved by alternately arranging them as shown in FIG. 10 to form 16 film blocks 6 each consisting of 24 symbols.

That is, the 0th film block # 0
Are the 0th symbol T000 from the ECC top half block, the 0th symbol B000 from the ECC bottom half block, the 1st symbol T001 from the ECC top half block, and the 0th symbol T000 from the ECC bottom half block. .. Are formed by sequentially arranging the eleventh symbol T011 from the ECC top half block and the eleventh symbol B011 from the ECC bottom half block.

Similarly, the first film block # 1 includes the twelfth symbol T012 from the ECC top half block, the twelfth symbol B012 from the ECC bottom half block, and the ECC top half block. Thirteenth symbol from T01
3, the thirteenth symbol B013 from the ECC bottom half block ... the 23rd symbol T023 from the ECC top half block
23rd symbol B from C bottom half block
023 are arranged in order. Similarly, the second to fifteenth film blocks # 2 to # 1
5 is also formed. The film block thus formed is recorded on the digital sound track by the LEDs 28L and 28R as described above, and becomes audio data.

That is, the motion picture film recording apparatus 20 can record the waveform of the dot display, which is the display pattern, while recording the audio data on the digital sound track.

As described above, the motion picture film recording apparatus 20 can record the waveform of the dod display indicating the predetermined position of the audio data on the alignment track. Therefore, the user does not need to record, for example, a pop sound on the analog sound track, and thus a movie film on which digital sound is recorded can be created without recording analog sound.

Further, since it is not necessary to record the pop sound for position alignment, the steps of editing and analog recording can be omitted, which can contribute to the reduction of production cost.

Furthermore, the recording device 20 for this motion picture film
Then, by recording the alignment tracks 7 and 8 in the picture area 2 which is not used in the negative film for audio at all, the entire film can be effectively used.

The configurations, formats, etc. of the above-mentioned motion picture film and recording device are merely examples, and the present invention is not limited to the above-mentioned embodiments.

For example, in the movie film recording apparatus 20, the case where the audio data is multi-channel has been described as an example, but the audio data may be monaural channel, for example. The data supplied to the re-quantization circuit 29 is not limited to the right mix channel (RM) audio data, but may be audio data of a specific channel such as the center channel (C). .

[0065]

According to the motion picture film of the present invention, each alignment track corresponding to each digital sound track is provided along each digital sound track in the image recording area, and the display pattern is recorded on this alignment track. ing. Therefore, the user can visually confirm the display pattern indicating the predetermined position of the audio data. Therefore, when the digital sound of different systems is recorded several times on the movie film, the recording phase of each can be accurately measured. And it can be easily confirmed.

Further, since the above-mentioned motion picture film is provided with a waveform in which black and white of the dot display are inverted for each audio data, the number of times of audio recording can be easily identified.

In the above-mentioned motion picture film, it is not necessary to record, for example, a pop sound at a predetermined position on the analog sound track and to detect the position where the pop sound is recorded to align the position with the image. It is possible to create a motion picture film with only digital sound without recording. In addition, since it is not necessary to record the pop sound for alignment, the steps of editing and analog recording can be omitted, which can contribute to the reduction of production cost.

Further, in the motion picture film recording apparatus according to the present invention, the display pattern recording means changes the light emitting state of the recording light source based on the audio data.
Record a visible display pattern on the alignment track. Therefore, the user does not need to record, for example, a pop sound on the analog sound track, and can make a movie film on which digital sound is recorded without recording analog sound.

Further, since it is not necessary to record analog voice for alignment, the steps of editing and analog recording can be omitted, which can contribute to the reduction of production cost.

Further, by recording the display pattern in the image recording area which is not used in the negative film for voice, the entire film can be effectively used.

[Brief description of drawings]

FIG. 1 is a plan view showing the structure of a motion picture film according to the present invention.

FIG. 2 is an enlarged view of a main part of a waveform recorded on an alignment track of the motion picture film.

FIG. 3 is a block diagram showing a configuration of a movie film recording apparatus according to the present invention.

FIG. 4 is a block diagram showing a specific configuration of a movie film recording apparatus according to the present invention.

FIG. 5 is a diagram for explaining a format of a compression processing block recorded in the left channel digital sound track of the movie film.

FIG. 6 is a diagram for explaining the format of a compression processing block recorded in the right channel digital sound track of the movie film.

FIG. 7 is a diagram for explaining a configuration of the compression processing block.

FIG. 8 is a diagram illustrating an ECC top half block including the compression processing block.

FIG. 9 is a diagram illustrating an ECC bottom half block including the compression processing block.

FIG. 10 is the ECC top half block and the E
It is a figure for demonstrating that an ECC full block which consists of CC bottom half blocks is interleaved, and a film block is comprised.

[Explanation of symbols]

5 (5L, 5R) Digital Sound Track, 6
Digital sound track, 7,8 Alignment track, 11 Encoding circuit, 12 ECC encoder, 1
5 LEDs, 16 requantization circuits, 18 LEDs, 22
Encoding circuit, 25 (25L, 25R) ECC encoder, 28 (28L, 28R) LED, 29 Requantization circuit, 31 LED

Claims (4)

[Claims] 1. A motion picture film in which audio data is recorded in a plurality of digital sound tracks, wherein alignment tracks corresponding to the plurality of digital sound tracks are provided along the plurality of digital sound tracks in an image recording area. And a display pattern indicating a predetermined position of each of the audio data is recorded on each of the alignment tracks. 2. The motion picture film according to claim 1, wherein the display pattern is a waveform of a dot display according to the level of the audio data. 3. An audio data generating means for encoding an audio signal to generate audio data, and a digital signal corresponding to the audio data by changing a light emitting state of a light source for recording based on the audio data. Audio data recording means for recording the audio data on the sound track, and each alignment track provided corresponding to each digital sound track by changing the light emitting state of the recording light source based on the audio data. An apparatus for recording a motion picture film, comprising: a display pattern recording means for recording a visible display pattern indicating a predetermined position of the audio data on a predetermined alignment track. 4. Requantization means for requantizing the audio data generated by said audio data generating means and supplying predetermined audio data to said display pattern recording means, said display pattern recording means comprising said requantization means. 4. The motion picture film recording apparatus according to claim 3, wherein the waveform of the dot display is recorded by changing the light emission state of the recording light source based on the audio data from the converting means.