CN1116729A - Digital sound recording on motion picture film - Google Patents

Digital sound recording on motion picture film Download PDF

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Publication number
CN1116729A
CN1116729A CN 94112780 CN94112780A CN1116729A CN 1116729 A CN1116729 A CN 1116729A CN 94112780 CN94112780 CN 94112780 CN 94112780 A CN94112780 A CN 94112780A CN 1116729 A CN1116729 A CN 1116729A
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China
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mentioned
passage
data
audio signal
film
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CN 94112780
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Chinese (zh)
Inventor
宫森慎二
上野正俊
久保又泰
高梨贤治
濑户川俊明
M·J·科哈特
J·E·泰勒
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Sony Cinema Products Corp
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Sony Dynamic Digital Sound Inc
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Publication of CN1116729A publication Critical patent/CN1116729A/en
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  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

A motion picture film is capable of reproducing the sound field full of ambience in the reproducing system. The digital sound tracks 5L and 5R, on which digital audio data have been recorded, are recorded so that temporally same digital audio signals are recorded with a spatial shift by a preset distance along the film running direction.

Description

Digital recording on the cinefilm
The present invention relates to the record and the playback of the digital model on the cinefilm sound channel, and the cinefilm that records digital model.
In habitual cinefilm for example shown in Figure 16, its record format has a large amount of picture records district (frame) 201 that arranges along its length, and they are arranged along the moving direction (being the film traffic direction) of film.Be recorded in the simulation sound channel district 202 of picture record district, film traffic direction upper edge one side with the corresponding audio signal of picture that is recorded in the picture record district.This structure is by the SMPTE prescribed by standard.In the simulation sound channel, an audio signal that matches in time with the picture that is recorded in the picture record district (frame) is recorded on the position of 20.5 frames of this picture in advance.At this moment consider that audio channels is to be read by the playback component between the take-up reel that is positioned at projection parts and projector (than leading 20.5 frames of frame of projection).So that when playing, playing pictures and corresponding sound accompaniment thereof simultaneously.
In this habitual cinefilm, the audio signal of left and right passage is that the mode according to time correlation writes down.As shown in figure 16, audio signal is recorded in the simulation sound channel 202 on the position than leading 20.5 frames of corresponding picture frame, thereby audio signal can be matched with the picture that is recorded in the picture record district 201 in time.Yet, if in cutting editor's joint or owing to data have been lost in the scratch vertical with the film traffic direction, will damage the ability to play of left and right passage audio signal, the problem of sound interruption appears.In other words, according to conventional techniques editor or repairing film the time, if adopt the cutting edit mode, even when editor, removed the picture 201 of corresponding frame, but audio signal is still stayed on the simulation sound channel 202, although or on film, also remain with corresponding frame picture, when editor, cut off audio signal.
Existing people repays and tried to be provided with in the no zone digital accompaniment data field in standard format, plays output so that produce the sound accompaniment with abundant atmosphere during showing when keeping existing form.Assignee of the present invention has proposed a kind of technology, promptly on the film traffic direction of the both sides, picture record district that are used to write down film, two sound channels are set, and in these two digital sound channels, write down the digital accompaniment signal, to guarantee to have the sound reproduction of abundant atmosphere.This technology is disclosed in the flat 5-40938 of Japanese Patent Application Publication number and the flat 5-109196 of Japanese Patent Application Publication number, the latter's Application No. is 958,664 (abandoning), its follow-up application number is 090,705, and the flat 4-320918 of another Japanese patent application, its Application No. is 158,767.These application documents are used as reference in this article.
In this cinefilm, wish during showing, to provide sound reproduction with high sound quality and abundant atmosphere, therefore must carry out error correction or error covering to duplicated played data on digital sound channel.
Concerning the habitual for example digital CD equipment of medium, adopt the Reed-Solomon sign indicating number of right-angled intersection to carry out error correction, to prevent stochastic error or burst error, the limit of required this error correction capability is to be decided by the error that produces in the medium.
Be easy to be subjected to the damage of film drive system on the cinefilm with the zone of optics digital form record audio signal.Along with the increase of movie number of times, can produce relatively long burst error.Therefore, interlaces lengths must be established to such an extent that grow a bit, interrupts so that eliminate sound accompaniment.Yet, when interlaces lengths is longer, can between its corresponding audio signal of the picture on the film, cause phase deviation.Cutting edit mode as film editor's basic fundamental is restricted.Correspondingly, when adopting longer interlaces lengths, system has also been constituted restriction.
The purpose of this invention is to provide a kind of cinefilm, recording method and device with and/or the method and apparatus reset, make in the Play System risk of forfeiture audio signal ability to play minimum, the forfeiture of this audio signal is owing to causing with the perpendicular upwardly extending scratch in side or the joint of film of film traffic direction.
Another object of the present invention provides a kind of cinefilm, recording method and device thereof and/or playback method and device, even because long burst error can not be reset the signal recording area on the film one side length direction, also can in Play System, compensate therein to sound interruption.
A further object of the present invention provides a kind of cinefilm, and recording method and device thereof and/or playback method and device thereof wherein can be by the high-quality audio signals of correctly resetting out of the digital processing in Play System.
According to one aspect of the present invention, the cinefilm that is provided possesses the left passage and the right passage numeral sound channel of extending along the film traffic direction at least, and utilizes left passage and right passage sound accompaniment data optical recording on sound channel.This cinefilm comprises the left and right passage audio signal that is recorded in respectively on left passage and the right passage numeral sound channel, and its sound accompaniment data are identical in time, and have the spatial deviation of preset distance along the film traffic direction.
According to another aspect of the present invention, a kind of cinefilm is provided, record picture by frame one by one in its picture record district, it has the left passage and the right passage numeral sound channel of extending along the film traffic direction at least, and left passage and right passage sound accompaniment data usefulness optical recording on sound channel.This cinefilm comprises along the picture that matches in time and the sound accompaniment data of film traffic direction record having at least one to be approximate coincideing with the picture record district in two digital sound channels on physical location.
According to the present invention, identical left and right passage audio signal is stored on left passage and the right passage sound channel on the time, and has the spatial deviation of preset distance along the film traffic direction.Therefore, just might compensate because left and right passage sound accompaniment data are damaged the sound interruption that is caused simultaneously, this damage is because of the scratch of usually extending along the film traffic direction or the film weld in the playback system causes, just can prevent from playback system, to lose play capability thus, realize correct sound accompaniment data playback.In addition, even the audio signal recording areas of a passage is subjected to the destruction of long burst error and can not resets again, also might compensate sound interruption.
The people who is familiar with this area is by recognizing other purposes of the present invention, advantage and feature to the following description of the present invention.
Fig. 1 is the floor map of cinefilm of the present invention.
Fig. 2 is the floor map of a cinefilm, is used to illustrate the position of record audio signal on according to cinefilm of the present invention.
Fig. 3 represents the block scheme according to an embodiment of cinefilm pen recorder of the present invention.
Fig. 4 represents the block scheme according to an embodiment of cinefilm replay device of the present invention.
Fig. 5 is a floor map, an example of expression cinefilm, and sound accompaniment data wherein can not have been proofreaied and correct.
Fig. 6 represent according to cinefilm of the present invention by the replay device normal playback time playback and the relative position between the loudspeaker.
Fig. 7 represents the relative position between playback and the loudspeaker, wherein by what reset out according to cinefilm replay device of the present invention a sound channel is only arranged.
Fig. 8 represents the relative position between loudspeaker and the playback, wherein by what cinefilm replay device of the present invention was reset out another sound channel is only arranged.
Fig. 9 represents to be used to show a film projector of cinefilm of the present invention.
Figure 10 is the block diagram of another embodiment of cinefilm pen recorder of the present invention.
Figure 11 is the block diagram of another embodiment of cinefilm replay device of the present invention.
Figure 12 has illustrated the working method in the level control in the replay device shown in Figure 11.
Figure 13 has illustrated the another kind of working method in the level control in the replay device shown in Figure 11.
Figure 14 has illustrated other working methods in the level control in the replay device shown in Figure 11.
Figure 15 is the block diagram of other embodiment of cinefilm replay device of the present invention.
Figure 16 represents the cinefilm habitually practised.
Followingly explain cinefilm with reference to accompanying drawing, and method and apparatus that is used to write down and the device that is used to reset.The application requires to enjoy the right of priority of Japanese patent application 93065224,93087404 and No. 93090967, and relevant with 93090956 Japanese patent applications.These application documents are used as reference in this article.
Has the structure that exemplifies shown in Figure 1 according to cinefilm of the present invention.Cinefilm 1 shown in Figure 1 has the picture record district 2 that is used to write down by projected picture, be used to carry the punch block 3L and the punch block 3R of the cinefilm of being shown, simulation sound channel 4L and simulation sound channel 4R make the conventional equipment audio signal of resetting, and digital sound channel 5L and digital sound channel 5R are used to write down multi-channel digital sound accompaniment data.
The analog audio signal of left and right passage is recorded in respectively on simulation sound channel 4L and the 4R.
On the digital sound channel 5L of present embodiment and digital sound channel 5R, writing down the sound accompaniment data Cn of 8 passages, SWn, Ln, Rn, CLn, CRn, SLn and SRn are respectively applied for central passage (C), secondary bass channel (SW), left side passage (L), right passage (R), a left side, center passage (CL), the right passage (CR) in center, around left passage (SL), and around right passage (SR).Sound accompaniment data LMn is by left passage (L), center left side passage (CL) and mix around left passage (SL), and sound accompaniment data RMn is by right passage (R), center right passage (CR) and mixing around right passage (SR).Sound accompaniment data Cn in journal in digital sound channel 5L, Ln, and CLn, SLn, SWn and RWn, and sound accompaniment data Cn-α in journal in another digital sound channel 5R, Rn-α, CRn-α, SRn-α, SWn-α and LMn-α.
Subscript ＂ n ＂ or ＂ n-α ＂ represent the order by the time arrangement.For example on behalf of these sound accompaniment data, the Cn of digital sound channel 5L be in n position on the time sequencing of central passage (C), and the n-α of digital sound channel 5R represents that these sound accompaniment data are in (n-α) individual position on the time sequencing of central passage (C).Promptly being recorded on the digital sound channel 5R with respect to the data that are recorded in the data hysteresis α on the digital sound channel 5L.
For convenience of explanation, a left side, right passage is attended by a center and one separately around passage.For example left passage be attended by a left side around with a LC passage.The center that these are followed and around passage (and channel-like) for the audience provides the sound that can strengthen environmental effect, therefore they can be belonged to ＂ environment passage ＂, or adopt similar term.
Referring to Fig. 2, with the frame 7 center numeral sound channel 8R that is recorded in cinefilm on reference point 8RB on the sound accompaniment data of sound accompaniment data with identical timing be recorded on the position 8LB of leading 4 ECC groups (=17.8 frame).That is to say that digital sound channel 8L goes up the playback duration of the sound accompaniment data at 8LB place, position and wants Zao than the sound accompaniment data at 8RB place, the last position of digital sound channel 8R.The position of writing down the sound accompaniment data of identical timing on the simulation sound channel is 9LRB, and this position is ahead of 20.5 frames of reference point 8RB.
Fig. 3 shows the structure of the cinefilm record data of one embodiment of the invention.Pen recorder shown in Figure 3 is recorded in left passage and right passage sound accompaniment data on the digital sound channel 8L and 8R of above-mentioned cinefilm 1, and this installs by mixer 11L, 11R, scrambler 12a-12l, traffic pilot 13L, 13R, delay memory 14R, error correction data attachment device 15L, 15R, modulator 16L, 16R and register 17L, 17R constitutes.
In this pen recorder, central passage (C) is connected to scrambler 12a and 12g, and left passage (L) is connected to scrambler 12b and mixer 11L.Center left side passage (CL) is connected to scrambler 12C and mixer 11L, is connected to scrambler 12d and mixer 11L around left passage (SL), and the output of mixer 11L is connected to scrambler 12l.Right passage (R) is connected to scrambler 12h and mixer 11R, and the right passage in center (CR) is connected to scrambler 12i and mixer 11R.Be connected to scrambler 12j and mixer 11R around right passage (SR), the output of mixer 11R and then be connected to scrambler 12f.Secondary bass channel (SW) is connected to scrambler 12e and 12k.
Scrambler 12a to 12f is connected to traffic pilot 13L, and scrambler 12g to 12l is connected to traffic pilot 13R.Traffic pilot 13L is connected to register 17L via error attachment device 15L and modulator 16L.On the other hand, traffic pilot 13R is connected to error correction data attachment device 15R via delay memory 14R, and is connected to register 17R through modulator 16R therefrom.
The input audio signal that belongs to central passage (C) is sent to scrambler 12a and 12g.The input data audio signal of left side passage (L) is sent into mixer 11L and scrambler 12b, and the input digit audio signal of center left side passage (CL) is admitted to mixer 11L and scrambler 12c.Input digit audio signal around left passage (SL) is admitted to mixer 11L and scrambler 12d, and the signal of sending into mixer 11L is mixed together as a mixed signal LM and is admitted to scrambler 12l, is used as the offset data of the sound accompaniment data of each passage.The input digit audio signal of right passage (R) is admitted to mixer 11R and scrambler 12h, and the input digit audio signal of right central passage (CR) is admitted to mixer 11R and scrambler 12i.Input audio signal around right passage (SR) is admitted to mixer 11R and scrambler 12j, and the signal of sending into mixer 11R is mixed together and constitutes signal RM, and it is transported to the offset data of scrambler 12f as each passage sound accompaniment data.
The input digit audio signal of secondary bass channel (SW) is sent to scrambler 12e and 12k.
Be admitted to the digital accompaniment signal C of scrambler 12a and 12f as left road signal, L, CL, SL, SW and RM, and the digital accompaniment signal C that is admitted to scrambler 12g to 12l as the right wing signal, R, CR, SR, SW and LM handle with data compression and high efficient coding mode in scrambler, so that data volume is reduced to 1/5th.This data compression and coding are by sub-band coding, quadrature transform coding and realize best than the combination of certain bits.
The left road signal of compression is admitted to traffic pilot 13L, and the right wing signal of compression is sent to traffic pilot 13R.These input signals are converted to the output bit flow that is used to write down by traffic pilot 13L and 13R.Left road output bit flow from traffic pilot 13L is admitted to error correction data attachment device 15L, and is admitted to delay memory 14R from the right wing output bit flow of traffic pilot 13R.Give the right wing bit stream additional mistiming by delay memory 14R, so that make the right wing bit stream that is recorded be arranged a time lag with respect to left road bit stream.And then the right wing bit stream sent into error correction data attachment device 15R.
Be admitted to error correction data attachment device 15L, the data of 15R are coupled with C2 parity error correction signal and C1 the parity error correction signal that adopts right-angled intersection Reed-Solomon sign indicating number respectively, are admitted to modulator 16L then, 16R.
Deliver to modulator 16L, the data of 16R are changed with the 8-9 conversion regime, and a byte data is converted to 9-dot pattern data, and its data volume is made of the predetermined byte number as a group.Data after the conversion are by register 17L, and 17R is recorded on digital sound channel 5L and the 5R (Fig. 1) by group.
Concerning cinefilm 1, write down the sound accompaniment data of each passage thereon with this pen recorder, the digitizing of right wing analog audio signal, again right passage (R), the right passage (CR) in center and mix around right passage (SR) and to constitute sound accompaniment data RMn carries out record with it as the right wing offset data.On the other hand, the analog audio signal digitizing of left road, again with left passage (L), center left side passage (CL) and be mixed into sound accompaniment data LMn around left passage (SL) carries out record with it as left road offset data.So just, left or its corresponding environment passage of right stereo channel constituted compensation channels by being mixed mutually.In addition, each the passage sound accompaniment data that is recorded on the digital sound channel 5R have a mistiming with respect to each the passage sound accompaniment data that is recorded on the digital sound channel 5L.
According to a kind of structure embodiment of cinefilm replay device of the present invention as shown in Figure 4.Replay device shown in Figure 4 is used as the digital sound channel 8L from above-mentioned cinefilm 1, reset among the 8R left passage and right passage sound accompaniment data, and this device comprises ccd line sensor 20L, 20R, detuner 21L, 21R, error correction device 22L, 22R, delay memory 23L, error detector 24, demultiplexer 25L, 25R, demoder 26a to 26l, left side circuit-switched data selector switch 27a to 27d, and right wing data selector 28a to 28d.
For the 8-passage audio signal of resetting, use ccd line sensor 20L, 20R reads each passage from the digital sound channel 5L of cinefilm 1 and 5R digital accompaniment data.
Ccd line sensor 20L, 20R are through detuner 21L, and 21R is connected to error correction device 22L, 22R respectively.Error correction device 22L is connected to delay memory 23L and error detector 24.Delay memory 23L is connected to demultiplexer 25L.Error correction device 22R is connected to demultiplexer 25R and error detector 24.Error detector 24 is connected to data selector 27a to 27d and data selector 28a to 28d.
The connected mode of demultiplexer 25L makes data wherein can be admitted to demoder 26a to 26f, and demultiplexer 25R can make data wherein be admitted to demoder 26g to 26l.
Demoder 26a is connected to data selector 27a, and demoder 26b is connected to data selector 27b.Demoder 26c is connected to data selector 27c, and demoder 26d is connected to data selector 27d.Demoder 26e is connected to data selector 28d.Demoder 26f is connected to data selector 28a, 28b and 28c.Demoder 26g is connected to data selector 27a, and demoder 26h is connected to data selector 28a.Demoder 26i is connected to data selector 28b, and demoder 26j is connected to data selector 28c.Demoder 26k is connected to data selector 28d.Demoder 26l is connected to data selector 27b, 27c and 27d.
By ccd line sensor 20L, the left and right passage digital accompaniment data that 20R reads by demodulation, are delivered to error correction device 22L, 22R respectively at detuner 21L among the 21R then.
Error correction circuit 22L, 22R use and by the C1 odd and even data and the C2 odd and even data of detuner 21L, 21R demodulation the sound accompaniment data are proofreaied and correct respectively.
The output data of error correction circuit 22L, i.e. data after the error correction, just left circuit-switched data is admitted to delay memory 23L, proofreaies and correct the mistiming between itself and right wing data, so that make itself and right wing data sync.Data after the error correction also are sent to error detector 24.
Data in synchronization is admitted to demultiplexer 25L, 25R, and 25L resolves into C-by demultiplexer, L-, CL-, SL-, SW-and RM passage; And be broken down into C-by demultiplexer 25R, and R-, CR-, SR-, SW-and LM passage, thus distribute to demoder 26a to 26l.
Demoder 26a to 26l carries out decoding, this be with above-mentioned pen recorder in be used for the operation of the high efficient coding pairing of data compression.
Central passage sound accompaniment data Cn by demoder 26a and 26g decoding is output by data selector 27a.Left passage sound accompaniment data Ln by demoder 26b decoding exports through data selector 27b.Left side, center passage sound accompaniment data CLn by demoder 26c decoding exports via data selector 27c.By exporting by data selector 27d of demoder 26d decoding around left passage sound accompaniment data SLn.Secondary bass channel sound accompaniment data SWn by demoder 26e and 26k decoding exports via data selector 28d.Right passage sound accompaniment data Rn by demoder 26h decoding exports via data selector 28a.The right passage sound accompaniment in center data CRn by demoder 26i decoding exports via data selector 28b.By exporting via data selector 28c of demoder 26j decoding around right passage sound accompaniment data SRn.
Right passage sound accompaniment data RMn by demoder 26f decoding is provided for data selector 28a, 28b and 28c.Left passage sound accompaniment data LMn by demoder 26l decoding is sent to data selector 27b, 27c and 27d.
24 pairs of error detectors are by error correction device 22L, the sound accompaniment data Cn that 22R provides, SWn, Ln, Rn, CLn, CRn, SLn, SRn, the error sign of LMn and RMn monitor, and control the data selector 27a to 27d and the data selector 28a to 28d of each passage by following mode.
That is to say that error detector 24 control data selector switch 27a to 27d and data selector 28a to 28d make the decoded data of their output by the rule of demoder 26a to 26e and demoder 26g to 26k decoding, i.e. the sound accompaniment data Cn of each passage, SWn, Ln, Rn, CLn, CRn, SLn and SRn, unless offering each passage sound accompaniment data Cn of demoder 26a to 26l, SWn, Ln, Rn, CLn, CRn, SLn, SRn has any error among LMn and the RMn.Two operational central passage sound accompaniment data Cn are arranged, just from the central passage sound accompaniment data of demoder 26a with from the central passage sound accompaniment data of demoder 26g.Which these two data select, and all it doesn't matter.Two spendable secondary bass channel sound accompaniment data SWn are also arranged similarly, also say so from the sound accompaniment data of demoder 26e with from the sound accompaniment data of demoder 26R.These two data select that whichever will do for use.
If at each the passage sound accompaniment data Cn by demoder 26a to 26l decoding, SWn, Ln, Rn, CLn, CRn, SLn and SRn, middle any sound accompaniment data be found to be full of error and therefore can't decode the time, go to select the sound accompaniment data of matching with regard to the control data selector switch.For example, if can not be decoded from the sound accompaniment data Ln of demoder 26b, go to select sound accompaniment data from demoder 26l with regard to the control data selector switch, it is by sound accompaniment data Ln, CLn and SLn, the sound accompaniment data LMn that mixes.If use according to above-mentioned replay device of the present invention a digital sound channel, produced very long burst error among for example digital sound channel 5L, and when in the digital sound channel 5R of a relative side, also error being arranged, still can reset out by sound accompaniment data Ln, the left passage sound accompaniment data that CLn and SLn mix just can produce left road signal thus from sound accompaniment data LMn.
If caused scratch owing on the film horizontal direction, carry out the cutting editor, as shown in Figure 5, the frame on the left road, Cn+ α, Ln+ α, CLn+ α, SLn+ α, SWn+ α and RMn+ α have become and can not reset, simultaneously, frame Cn on the right wing, Rn, CRn, SRn, SWn and LMn can not reset, but the data that are in position n on the left road have in chronological order been reset by left road, therefore might be in this acoustic field of resetting on the n of position in chronological order.On the other hand, can utilize the data that are recorded in the right wing, locate the data playback that is in position (n+ α) is in chronological order gone out acoustic field at its chronological position (n+ α).
Passage being difficult under the situation of prediction, by the dual logging mode of this sound accompaniment data, if a demoder can not carry out recording operation, but another demoder be still can carry out decode operation the time, the sound accompaniment data of just resetting out.Its result just can more effectively reset to haunt the acoustic field of sound interruption.
As shown in Figure 6, the 8-passage sound accompaniment data of being reset out by this replay device comprise from central loudspeakers 32, secondary bass 33, center left speaker 34, the right loudspeaker 35 in center, the 6-passage sound accompaniment data of left speaker 36 and right loudspeaker 37, these loudspeaker arrangement are in screen 31 sides, on screen 31, show the picture that duplicates from the picture record district 2 (Fig. 1) of cinefilm 1 (Fig. 1) with projector 100, and from the side that is arranged in projector around right loudspeaker 39 with around the 2-passage sound accompaniment data of left speaker 38, as being example among Fig. 6.The 8-passage digital audio system that is made of loudspeaker 32 to 39 can be reset out and have the acoustic field of enriched environment effect.
Central loudspeakers 32 is disposed in the center of screen 31 sides, and exports the broadcast that is produced by central passage sound accompaniment data C, and what its was exported is critical broadcast, for example men and women performer's dialogue.The broadcast that the secondary bass channel sound accompaniment data SW of secondary bass 33 outputs produces.Palmesthetic sound has been made us in its output, rather than the sound of low-frequency range, such as exports a kind of sound of blast, so it often is used to provide outstanding effect in the scene of blast.
Left speaker 36 and right loudspeaker 37 are disposed in the and arranged on left and right sides of screen 31 respectively, and export the broadcast with stereophonic effect of left passage sound accompaniment data L and right passage sound accompaniment data R generation.
The right loudspeaker 35 in center left speaker 34 and center is disposed between central loudspeakers 32 and the left speaker 36 respectively and between central loudspeakers 32 and the right loudspeaker 37, and output is by the broadcast of center left side passage sound accompaniment data CL and the right side, center passage sound accompaniment data CR generation; Thereby auxiliary left speaker 36 and right loudspeaker 37.These loudspeakers are very important, because have wide-screen and holding in a lot of spectators' the cinema at one, feel it is unsettled to what acoustic image arranged on the fixed position, and it depends on the seat position.Feel there being acoustic image can form more real fixed position effectively after having increased the right loudspeaker 35 in center left speaker 34 and center.
Be disposed in around the spectators seat around left speaker 38 with around right loudspeaker 39, be used to export, give a kind of impression of placing oneself in reverberation or happy environment of spectators by around left passage sound accompaniment data SL and the broadcast that produces around right passage sound accompaniment data SR.Form the image that has more stereophonic effect thus.
If can only emit the sound accompaniment data of left digital sound channel, as shown in Figure 7, the right loudspeaker 35 in center, right loudspeaker 37 and around right loudspeaker 39 just output by the right passage (CR) in center, right passage (R) and the broadcast that produces around the sound accompaniment data RM that right passage (SR) mixes like this, can not have been reset fully if right wing sound has become, also the sound effect similar can be realized, and sound interruption can be do not occurred to normal work period.
On the other hand, if can only emit the sound accompaniment data of right digital sound channel.As shown in Figure 8, center left speaker 34, left speaker 36 and around left speaker 38 just output by a left side, center passage (CL), left side passage (L) and the broadcast that produces around the sound accompaniment data LM that left passage (SL) mixes, like this, if left road sound has become can not reset fully, still can obtain the sound effect similar, and sound interruption can not occur to normal work period.
The layout of projector as shown in Figure 9.
In projector 100, cinefilm 1 is emitted by a supply reel 101, and by deflector roll 111,121,131, sprocket 112,122,132 and guide wheel 113,133 or the like guiding, so that by digital accompaniment playback unit 110, projection unit 120 and simulation sound accompaniment playback unit 130 are received by take-up reel 102.
Digital accompaniment playback unit 110 is gone up the reading number model from the digital sound channel 5L and the 5R of cinefilm 1, so that the playback audio signal.It is to be noted that especially cinefilm 1 is at deflector roll 111, the guiding of sprocket 112 and guide wheel 113 moves down.When cinefilm when when operation contacts with guide wheel 113, the light of reading from light source 103 just is radiated on digital sound channel 5L and the 5R (Fig. 1), so that receive, by the digital model and the audio signal of resetting out thus on their reading number sound channel 5L and the 5R by ccd line sensor 105A and 105B.
In digital accompaniment playback unit 110, detect with 104 pairs of dimmers perforations with the sprocket 112 of perforation 3 engagements of cinefilm 1, produce one with the synchronous 96H of cinefilm 1 travelling speed zThe frequency detecting signal.This 96H zDetection signal is admitted to a broadcast clock generator of playback process system.
Playing clock generator utilizes its PLL to produce 44.1KH zPlay clock, not shown.These 44.1KH zPlay clock and 96H zDetection signal is synchronous, 96H zDetection signal detects with the perforation of 104 pairs of sprockets 112 that are meshed with the perforation 3L and the 3R (Fig. 1) of cinefilm 1 of dimmer and obtains.
Each demodulator circuit in the digital accompaniment playback unit 110 broadcast clock that response is provided by the broadcast clock generator in operation, compression sound accompaniment data demodulates to each passage, just from ccd line sensor 105A, the digital sound channel 5L that 105B reads, the resulting point-like figure data of digital model on the 5R (Fig. 1), and in each error correction circuit, the sound accompaniment data are carried out error correction, so that in storer, bear the compression sound accompaniment data of each passage again.Data expanded circuit response in operation is expanded compression sound accompaniment data, so that the sound accompaniment data of each passage of resetting by playing the broadcast clock that clock generator provides.
The projection unit 120 of projector projects to the picture of cinefilm 1 on the not shown screen.Projection ray from a projection light source 123 is irradiated in the picture record district 2 of cinefilm 1, utilizes the guiding of deflector roll 121 and sprocket 122 to make the film operation, thereby irradiates projection ray by a projecting lens 124.
Analog audio signal playback unit 130 analog audio signal on cinefilm 1 simulation audio channels 4L and the 4R of resetting out.Cinefilm 1 is by deflector roll 131, and the guiding of sprocket 132 and guide wheel 133 moves.When cinefilm 1 during by guide wheel 133, analog audio signal playback unit 130 irradiates to the simulation audio channels 4 of film from a light source 134 and reads light.This is read light and is received by optical sensor 135, so that reset out analog audio signal from simulation sound channel 4.
Another embodiment that is used for the pen recorder of cinefilm of the present invention has the structure that Figure 10 exemplifies.
By shown in Figure 10, the pen recorder that is used for the cinefilm of the embodiment of the invention is constructed as follows, i.e. mixer 41L, 41R, level analysis device 42L, 42R, scrambler 43a to 43l, traffic pilot 44L, 44R, delay memory 45, error correction data attachment device 46L, 46R, modulator 47L, 47R and register 48L, 48R.
This cinefilm pen recorder has the sound accompaniment data input of 8 passages, central passage (C) just, left passage (L), a left side, center passage (CL), around left passage (SL), right passage (R), the right passage (CR) in center is around right passage (SR) and secondary bass channel (SW).Central passage (C) is connected to scrambler 43a and 43g.Left side passage (L) is connected to mixer 41L, level analysis device 42L and scrambler 43b.Center left side passage (CL) is connected to mixer 41L, level analysis device 42L and scrambler 43c.(SL) is connected to mixer 41L around left passage, level analysis device 42L and scrambler 43d.The output of mixer 41L is connected to level analysis device 42L, and scrambler 43d is connected to scrambler 12g.Right passage (R) is connected to mixer 41R, level analysis device 42R and scrambler 43h.The right passage in center (CR) is connected to mixer 41R, level analysis device 42R and scrambler 43i.(SR) is connected to mixer 41R around right passage, level analysis device 42R and scrambler 43j.The output of mixer 41R is connected to level analysis device 42R and scrambler 43f.Secondary bass channel (SW) is connected to scrambler 43e and 43k.
Scrambler 43a to 43f and level analysis device 42R are connected to traffic pilot 44L, and scrambler 43g to 43l and level analysis device 42L are connected to traffic pilot 44R.Traffic pilot 44L is connected to register 48L via error attachment device 46L and modulator 47L.On the other hand, traffic pilot 44R is connected to error correction data attachment device 46R via delay memory 45R, is connected to register 48R by modulator 47R then.The audio signal that is input to central passage (C) is sent to scrambler 43a and 43g.The input digit audio signal of left side passage (L) is admitted to mixer 41L, level analysis device 42L and scrambler 43b.The digital accompaniment signal that is input to center left side passage (CL) is admitted to mixer 41L, level analysis device 42L and scrambler 43c.The digital accompaniment signal that is input to around left passage (SL) is admitted to mixer 41L, level analysis device 42L and scrambler 43d.The signal of sending into mixer 41L then is mixed together and constitutes mixed signal LM, and this mixed signal LM is admitted to level analysis device 42L and scrambler 43l as the left road offset data of being made up of mixed signal LM.
The audio signal of importing right passage (R) is admitted to mixer 41R, level analysis device 42R and scrambler 43h.The digital accompaniment signal of the right passage in input center (CR) is admitted to mixer 41R, level analysis device 42R and scrambler 43i.Input is admitted to mixer 41R around the digital accompaniment signal of right passage (SR), level analysis device 42R and scrambler 43j.Simultaneously, the signal that is admitted to mixer 41R is mixed together as mixed signal RM, and this mixed signal RM sends into level analysis device 42R and scrambler 43f subsequently as the right wing offset data.
The digital accompaniment signal of importing secondary bass channel (SW) is admitted to scrambler 43e and 43k.
Be admitted to the digital accompaniment signal C of scrambler 43a to 43f, L, CL as left road signal, SL, SW and RM are encoded, by by sub-band coding, and quadrature transform coding or data volume is compressed to 1/5th than the efficient compression coding mode that combination constituted of certain bits.Send into the digital accompaniment signal C of scrambler 43g to 43l, R, CR, SR, SW and LM are encoded into the right wing signal, adopt by the sub-band coding quadrature transform coding or data volume is compressed to 1/5th than the efficient compression coding mode that combination constituted of certain bits.
Level analysis device 42L is the digital accompaniment signal L of left road offset data and original passage to the signal LM that is mixed by mixer 41L, and the level ratio between CL and the SL is analyzed, and produces the level ratio data of indication level ratio.The level ratio data that is produced by level analysis device 42L is admitted to traffic pilot 44L.On the other hand, level analysis device 42R is the digital accompaniment signal R of right wing offset data and original passage to the signal RM that is mixed by mixer 41R, CR, and the level ratio that reaches between the SR is analyzed, and produces the level ratio data of this level ratio of indication.The level ratio data that is produced by level analysis device 42R is admitted to traffic pilot 44R.
Traffic pilot 44L writes down bit stream according to the level ratio data that is produced by level analysis device 42L being synthesized by the left road sets of signals of scrambler 43a to 43f coding.On the other hand, traffic pilot 44R synthesizes the record bit stream to the right wing sets of signals of encoding with scrambler 43g to 43l according to the level ratio data that is produced by level analysis device 42R.
Left road output bit flow from traffic pilot 44L is admitted to error correction data attachment device 46L, and is admitted to delay memory 45R from the right wing output bit flow of traffic pilot 44R.Give the right wing bit stream additional mistiming by delay memory 45R, thereby when record, make the right wing bit stream be arranged a time lag with respect to left road bit stream.The right wing bit stream is admitted to error correction data attachment device 46R subsequently.
Be admitted to error correction data attachment device 46L, the data of 46R are coupled with C2 odd parity correction signal and C1 odd parity correction signal respectively, and both sides all adopt right-angled intersection Reed-Solomon sign indicating number, and then are sent to modulator 47L, 47R.
Adopt the 8-9 conversion to sending into modulator 47L, the data of 47R are changed, and 1 byte data is converted to 9 dot pattern data, the data volume that constitutes by the predetermined quantity byte as a group.By register 48L, 48R is recorded in the data after changing on the digital sound channel of cinefilm by group.
Figure 11 shows another embodiment of the replay device that is used for cinefilm 50 of the present invention.
The cinefilm replay device of present embodiment is as shown in figure 11 by constituting with the lower part, i.e. ccd line sensor 51L, 51R, detuner 52L, 52R, error correction device 53L, 53R, delay memory 54, error detector 55, demultiplexer 56L, 56R, demoder 57a to 57l, level controller 58L, 58R, left circuit-switched data selector switch 59a to 59d and right wing data selector 59e to 59h.Adopt this replay device, can use ccd line sensor 51L, 51R reads cinefilm 50 left and right passages from the left and right passage numeral sound channel of cinefilm 1 digital accompaniment data, 8 passage sound accompaniment data are used to reset.
Ccd line sensor 51L, 51R are via detuner 52L, and 52R is connected to error correction device 53L, 53R respectively.Error correction device 53L is connected to delay memory 54 and error detector 55.Delay memory 54 is connected to demultiplexer 56L.Error correction device 53R is connected to demultiplexer 56R and error detector 55.Error detector 55 is connected to data selector 59a to 59h subsequently.
The connection of demultiplexer 56L makes it send into demoder 57a to 57f to data, and the connection of demultiplexer 56R makes it send into demoder 57g to 57l to data.
Demoder 57a is connected to data selector 59a, and demoder 57b is connected to data selector 59b.Demoder 57c is connected to data selector 59c, and demoder 57d is connected to data selector 59d.Demoder 57e is connected to data selector 59h.Demoder 57f is connected to data selector 59e via level controller 58L, 59f and 59g.Demoder 57g is connected to data selector 59a, and demoder 57h is connected to data selector 59e.Demoder 57i is connected to data selector 59f, and demoder 57j is connected to data selector 59g.Demoder 57k is connected to data selector 59h, and demoder 57l is connected to data selector 59b, 59c, 59d via level controller 58R.
Adopt above-mentioned replay device, by ccd line sensor 51L, left road that 51R reads and right wing digital accompaniment data are offered error correction device 53L, 53R respectively by detuner 52L after the 52R demodulation.Error correction device 53L, 53R uses respectively by detuner 52L, and the C1 odd even correction data of 52R demodulation and C2 odd even correction data are proofreaied and correct the sound accompaniment data.
Left circuit-switched data by error correction circuit 53L output is sent to delay memory 54, so that proofread and correct the mistiming between the left and right two-way; That is to say that will to make left road and right wing synchronous.Each error sign through the data of error correction is sent to error detector 55.
Synchronous left road and right wing data are supplied to demultiplexer 56L, 56R respectively.Left side circuit-switched data is resolved into C by demultiplexer 56L, L, CL, SL, SW and RM sound accompaniment data and level ratio data 60a.These C, L, CL, SL, SW and RM audio signal are assigned to demoder 57a to 57f, and level ratio data 60a is admitted to level controller 58L.On the other hand, the right wing data are resolved into C by demultiplexer 56R, R, CR, SR, SW and LM sound accompaniment data and level ratio data 60b.These C, R, CR, SR, SW and LM sound accompaniment data are assigned to demoder 57g to 57l, and level ratio data 60b is admitted to level controller 58L.Demoder 57a to 57l carries out decode operation, and this is the matching operation that is used for the high efficient coding operation of data compression in each pen recorder.
Central passage sound accompaniment data Cn by demoder 57a and 57g decoding is output via data selector 59a.Left passage sound accompaniment data Ln by demoder 57b decoding exports via data selector 59b.Left side, center passage sound accompaniment data CLn by demoder 57c decoding exports via data selector 59c.By exporting via data selector 59d of demoder 57d decoding around left passage sound accompaniment data SLn.Secondary bass channel sound accompaniment data SWn by demoder 57e and 57k decoding exports via data selector 59h.Right passage sound accompaniment data Rn by demoder 57h decoding exports through data selector 59e.The right passage sound accompaniment in center data CRn by demoder 57i decoding exports via data selector 59f.By exporting via data selector 59g of demoder 57j decoding around right passage sound accompaniment data SRn.
Level controller 58L carries out level control according to the level ratio data from demultiplexer 56L to the right passage sound accompaniment data RMn by demoder 57f decoding, provides it to data selector 59e, 59f and 59g.On the other hand, according to level ratio data the left passage sound accompaniment data LMn by demoder 57l decoding is carried out level control, provide it to data selector 59b, 59c and 59d from demultiplexer 56R by level controller 58R.
55 pairs of error detectors are from error correction device 53L, the sound accompaniment data Cn of 53R, SWn, Ln, Rn, CLn, CRn, SLn, SRn, the error sign of LMn and RMn monitor, and control the data selector 59a to 59d and the data selector 59e to 59h of each passage in the following manner.
That is to say, the decoded data of error detector 55 control data selector switch 59a to 59d and data selector 59e to 59h output rule, just by each passage sound accompaniment data Cn of demoder 57a to 57f and demoder 57g to 57k decoding, SWn, Ln, Rn, CLn, CRn, SLn, SRn, unless offering each passage sound accompaniment data Cn of demoder 57a to 571, SWn, Ln, Rn, CLn, CRn, SLn, SRn has any error among LMn and the RMn.Two operational central passage sound accompaniment data Cn are arranged, just from the central passage sound accompaniment data of demoder 57a with from the central passage sound accompaniment data of demoder 57g herein.Which selects in these two data, and all it doesn't matter.Identical therewith, also have two spendable secondary bass channel sound accompaniment data SWn, promptly from the sound accompaniment data of demoder 57e with from the sound accompaniment data of demoder 57k.Whichever will do in selection among the two.
If at each the passage sound accompaniment data Cn by demoder 57a to 57l decoding, SWn, Ln, Rn, CLn, CRn, SLn and SRn, any one middle sound accompaniment data are found and have been full of wrong and therefore can't decode the time, and data selector just is controlled selects the sound accompaniment data of matching.For example, if can not be decoded from the sound accompaniment data Ln of demoder 57b, data selector just be subjected to the sound accompaniment data LMn of level control with regard to the controlled sound accompaniment data LMn that goes to select from demoder 57l according to the level ratio data.
At the level controller 58L that each passage is reacted, among the 58R according to the level ratio data to sound accompaniment data LMn, RMn carries out level control, can eliminate the level difference in each passage legacy data, thereby produces very natural sound equipment output.
In addition, sampling numerical value as a coding unit in the compressed encoding of register system for example is 512, if adopt an integer that equals this sampling numerical value multiple that the level ratio data is encoded, just might realize the bit stream conversion of level ratio data at input block place from scrambler 43a to 43l (Figure 10).On the other hand, at the demultiplexer 56L of replay device, just might realize the bit stream conversion of level ratio data among the 56R, and write down break-even data thus at the output terminal of demoder 57a to 571.
In this case, the level controller 58L of replay device, 58R carry out electrical speech level control one by one with sampling, in case the discontinuous of data appears in the boundary between each level ratio digital coding sampling.For example, the level variation is divided into a plurality of stages, as shown in figure 12, or makes level change the interval with several decibels, shown in Figure 13 or 14.
In the example of Figure 12, utilize the coding unit sample length advantage of level ratio data integral body to change level, change thereby prevent rapid level.In the example of Figure 13, be to begin to change level from the front end of sampling, the slope that keeps level to change is constant, makes slope and level variable quantity irrelevant, changes thereby prevent rapid level.Then be the tail end change level in sampling in the example of Figure 14, the slope that level is changed keeps constant and is irrelevant with the level variable quantity, thereby prevents the rapid variation of level.In Figure 12 to 14, thick-line arrow represents to represent the level ratio data of coding, and thin-line arrow is represented by level controller 58L, the level data that 58R produces.
In above-mentioned each embodiment, the digital accompaniment data of identical in time left and right passage audio signal are recorded on the left and right passage numeral sound channel, make the two traffic direction along film spatially be offset a predetermined distance.Yet, be recorded on the left and right tunnels analogy sound channel as if certain space that identical in time left and right tunnels analogy data are separated by, also can obtain similar effects.
Further referring to Figure 15, writing down left tunnels analogy sound accompaniment data in left side simulation sound channel 201L, writing down right tunnels analogy sound accompaniment data among the right simulation sound channel 201R, left and right simulation sound accompaniment data are provided for left and right noise detector 202L, 202R and left and right amplifier 203L, 203R.Left and right noise detector 202L, 202R detects the noise of the left and right simulation sound accompaniment data of input, and detecting output supply switch 204, switch 204 is according to the left side simulation sound accompaniment data of the left amplifier 203L of this detection output control and the right side simulation sound accompaniment data of right amplifier 203R.Specifically, if in left and right simulation sound accompaniment data, all do not detect noise, just via the left side simulation sound accompaniment data of the left amplifier 205L output of an output, and via the right side simulation sound accompaniment data of the right amplifier 205R output of an output from right amplifier 203R from left amplifier 203L.If detect noise in simulation sound accompaniment data, switch 204 just is converted, thereby via output amplifier 205L, 205R exports another muting simulation sound accompaniment data.
Adopt cinefilm of the present invention, identical in time left and right passage audio signal is recorded on left passage and the right passage sound channel, and they spatially have the skew of preset distance along the film traffic direction.So just might compensate the left and right impaired sound interruption that causes of passage sound accompaniment data while, this damage of sound accompaniment data is because the usually scratch of extending along the film traffic direction or the film weld in the playback system causes, therefore just can prevent that playback system from losing its play capability, the correct playback of realization sound accompaniment data.In addition, becoming even the sound accompaniment data recorded area of a passage is destroyed by very big burst error can not playback time, also might compensate sound interruption.
Although more than be to describe of the present inventionly with reference to specific embodiments, the skilled person in this area obviously can make various modifications and changes under the condition that does not break away from the scope of the invention and intention.

Claims (60)

1. a cinefilm has the left passage and the right passage numeral sound channel of extending along the film traffic direction at least, and use up left passage and right passage sound accompaniment data are recorded on the above-mentioned sound channel, the above-mentioned sound accompaniment data of wherein identical in time left and right passage audio signal are recorded in respectively on left passage and the right passage numeral sound channel, and the spatial deviation of a preset distance is arranged along the film traffic direction.
2. according to the cinefilm of claim 1, further comprise a large amount of picture frames of arranging along above-mentioned film traffic direction, and above-mentioned preset distance wherein is about 17.8 frames.
3. according to the cinefilm of claim 1, wherein on above-mentioned left passage numeral sound channel, be provided with first record area, be used to write down the right offset data of the above-mentioned right passage sound accompaniment data of compensation, and on above-mentioned right passage numeral sound channel, be provided with second record area, be used to write down the left offset data of the above-mentioned left passage sound accompaniment data of compensation.
4. according to the cinefilm of claim 3, wherein above-mentioned left passage numeral sound channel and above-mentioned right passage numeral sound channel comprise a plurality of sound accompaniment data channel separately, above-mentioned left passage numeral sound channel comprises an above-mentioned right offset data passage, and above-mentioned right passage numeral sound channel comprises the passage of an above-mentioned left offset data.
5. according to the cinefilm of claim 4, wherein above-mentioned offset data is the mean value of at least two above-mentioned a plurality of passages, and further comprise the level ratio data of the level ratio between the above-mentioned offset data of representative and the above-mentioned sound accompaniment data that compensated by above-mentioned offset data, this level ratio data is recorded in each recording areas with above-mentioned offset data.
6. according to the cinefilm of claim 1, wherein above-mentioned left passage sound accompaniment data are processed according to identical error-correcting program with above-mentioned right passage sound accompaniment data.
7. according to the cinefilm of claim 6, wherein above-mentioned preset distance is enough big, so that carry out error-correcting program at above-mentioned film by the required time of above-mentioned preset distance when above-mentioned film passes through projector forward.
8. according to the cinefilm of claim 7, above-mentioned left passage sound accompaniment data wherein and above-mentioned right passage sound accompaniment data are data of compression.
9. method in cinefilm 1 record sound accompaniment data, this cinefilm has the left passage and the right passage numeral sound channel of extending along the film traffic direction at least, and this method comprises the following steps:
Use up left passage and right passage sound accompaniment data are recorded on the sound channel;
Wherein identical in time left and right passage audio signal is recorded in respectively on left passage and the right passage numeral sound channel, and has the spatial deviation of a preset distance on the direction of moving along film.
10. according to the method for claim 9, the offset data that wherein is used for compensating above-mentioned right passage sound accompaniment data is recorded in a recording areas that is arranged at above-mentioned left passage numeral sound channel, and the offset data that is used for compensating above-mentioned left passage sound accompaniment data is recorded in a recording areas that is arranged at above-mentioned right passage numeral sound channel.
11., wherein representing offset data to be recorded in the recording areas with level ratio data and offset data by the level ratio between the sound accompaniment data of above-mentioned offset data compensation according to the method for claim 10.
12. the method for recordable picture and audio signal on a cinefilm has picture record district and the left passage at least and the digital sound channel of right passage of extending along the film traffic direction on cinefilm, this method comprises:
Be recorded in picture in the picture record district one by one frame;
Use up left passage and right passage sound accompaniment data are recorded on the sound channel;
Wherein the picture that matches with above-mentioned sound accompaniment data in time is recorded on the physical location of roughly coincideing with one of above-mentioned two digital sound channels along the film traffic direction.
13. method according to claim 12, further may further comprise the steps, promptly in above-mentioned two digital sound channels another is recorded on the certain position, makes the sound accompaniment data that match in time separate a distance of being scheduled to actually along one of above-mentioned film traffic direction and above-mentioned digital sound channel.
14. the device of record sound accompaniment data on cinefilm, this cinefilm has the left passage and the right passage numeral sound channel of extending along the film traffic direction at least, and use up left passage and right passage sound accompaniment data are recorded on the above-mentioned sound channel, this device comprises:
The device that is used for the left passage sound accompaniment data of record on left passage numeral sound channel;
Be used for that the time is gone up the right passage sound accompaniment data identical with left passage sound accompaniment data and be recorded in device on the digital sound channel of right passage, make two sound accompaniment data have the spatial deviation of a preset distance along the film traffic direction.
15., further comprise picture recording device, be used for picture is recorded in the picture region of above-mentioned film according to a series of pictures frame, and above-mentioned preset distance wherein is about 17.8 picture frames according to the device of claim 14.
16. the device of recordable picture and audio signal on a cinefilm, this film have picture record district and the left passage at least and the digital sound channel of right passage of extending along the film traffic direction, this device comprises:
Be used for picture is recorded in one by one frame the device in picture record district;
Use up left passage and right passage sound accompaniment data are recorded in device on the sound channel;
Picture that wherein matches in time and sound accompaniment data are recorded in the physical location of roughly coincideing at least one sound channel and picture record district in above-mentioned two digital sound channels along the film traffic direction.
17. according to the device of claim 16, wherein the sound accompaniment data of second sound channel in above-mentioned two the digital sound channels that match with above-mentioned picture in time are recorded in above-mentioned picture and in fact separate on the position of a preset distance.
18. according to the device of claim 17, above-mentioned preset distance wherein is approximately 17.8 picture frames.
19. according to the device of claim 16, also be included in the device of record simulation sound channel in the simulation sound channel district of above-mentioned film, and above-mentioned simulation sound channel and the picture that matches on the time separate about 20.5 frames.
20. the method for a playback audio signal from the cinefilm, this cinefilm has the left passage and the right passage numeral sound channel of extending along the film traffic direction at least, left passage wherein and right passage sound accompaniment data along the traffic direction of film each other by certain spatial deviation respectively by optical recording on left passage and right passage sound channel, this method comprises:
Go up identical left passage and right passage audio signal readout time on left passage and the right passage sound channel;
The time of reading in the above-mentioned reading step is gone up one of identical left and right passage audio signal detect losing of its audio signal; And
According to the testing result of above-mentioned loss detection step, replace having lost the identical audio signal on that sound channel of signal with the identical in time audio signal of another sound channel.
21. the device of a playback audio signal from the cinefilm, at least have the left passage and the right passage numeral sound channel of extending on this cinefilm along the film traffic direction, left passage wherein and right passage sound accompaniment data along the traffic direction of film each other with predetermined spatial deviation by optical recording on left passage and right passage sound channel, this device comprises:
Device from the left passage left and right passage audio signal identical with playback duration on the right passage sound channel;
The loss detection device, the time that above-mentioned replay device is reset out goes up one of identical left and right passage audio signal and detects losing of its audio signal; And
Chromacoder according to the output of above-mentioned loss detection Device Testing, is gone up identical audio signal on that passage that identical audio signal replacement lost signal with the time of another sound channel.
22. a cinefilm comprises:
A picture record district, frame ground recordable picture one by one therein;
Along at least one left passage and right passage sound channel that the film traffic direction extends, left passage and right passage sound accompaniment data by optical recording on sound channel; And
Picture that wherein matches in time and sound accompaniment data are recorded in the physical location of roughly coincideing at least one and the picture record district in two sound channels along the film traffic direction.
23. a cinefilm comprises following combination:
The first digital sound channel along the extension of film traffic direction;
The second digital sound channel along above-mentioned film traffic direction extension;
Use up a kind of numerical coding audio signal that is recorded on above-mentioned two the first and second digital sound channels, between the above-mentioned numerical coding audio signal that is recorded on the above-mentioned first and second digital sound channels, have predetermined interval along above-mentioned film traffic direction.
24. film according to claim 23, also comprise a pair of simulation audio channels of extending along above-mentioned film traffic direction, above-mentioned simulation audio channels wherein is loaded with the analog version of left and right stereo channel, acoustic coding in this version and the above-mentioned first and second digital sound channels partly matches, and in above-mentioned simulation audio channels, comprising in time the part that matches with the above-mentioned first and second digital sound channels, but the above-mentioned first and second digital sound channels are led over along above-mentioned film traffic direction in its position.
25. according to the film of claim 23, the above-mentioned first and second digital sound channels wherein comprise the repeating data of representative center and secondary bass sound channel separately;
And the first above-mentioned digital sound channel also comprises the left passage of representative, the LC passage, and a left side is around passage and data of mixing right passage;
The right passage of above-mentioned mixing comprises right passage, right central passage, and right around passage;
And the second above-mentioned digital sound channel further comprises and is representing right passage, and right central passage is right around passage and data of mixing left passage; And
Above-mentioned mixing left side passage comprises left passage, and a LC passage and a left side are around passage.
26. a cinefilm comprises following combination:
A large amount of picture frames along film traffic direction layout;
Use up the first and second numerical coding audio signals that are recorded on the above-mentioned film, these two audio signals are recorded in respectively on the primary importance and the second place with respect to the picture frame that matches in time, and the above-mentioned traffic direction along film between above-mentioned first and second positions has predetermined interval.
27. according to the film of claim 26, one of them above-mentioned position and the above-mentioned picture frame adjacency that matches in time, and above-mentioned predetermined space is approximately 17.8 picture frames.
28. according to the film of claim 26, the above-mentioned first and second numerical coding audio signals wherein comprise first and second offset datas respectively.
29. according to the film of claim 28, also comprise the first level ratio data, be used to represent the level ratio between above-mentioned first offset data and the above-mentioned first numerical coding audio signal; And
Deng two level ratio datas, be used to represent the level ratio between above-mentioned second offset data and the above-mentioned second numerical coding audio signal.
30. according to the film of claim 26, also comprise a simulation sound channel that is loaded with simulated data, the position of this simulated data is than leading about 20.5 frames of the above-mentioned picture frame that matches in time.
31. a device that is used for the movie film comprises following combination:
Be used to read first readout device of the first numerical coding audio signal;
Be used to read second readout device of the second numerical coding audio signal, comprise the information that repeats with the above-mentioned first numerical coding audio signal in the above-mentioned second numerical coding audio signal, the residing position of part that matches on the time in the above-mentioned second numerical coding audio signal lags behind preset distance of the above-mentioned first numerical coding audio signal along the film traffic direction;
The device that makes the above-mentioned first numerical coding audio signal postpone schedule time amount is so that can use the above-mentioned first and second numerical coding audio signals an identical time;
An error detector is used for judging in the above-mentioned first or second numerical coding audio signal whether comprise too much error; And
A data selector switch responds above-mentioned error detector, if one of first or second above-mentioned numerical coding audio signal has comprised too much error, just selects data in another signal from the above-mentioned first or second numerical coding audio signal.
32., comprise first and second offset datas respectively in the first and second wherein above-mentioned numerical coding audio signals according to the device of claim 31.
33. device according to claim 32, also comprise level controller, be used to reproduce the first and second level ratio datas, level ratio between data represented above-mentioned first offset data of the first above-mentioned level ratio and the above-mentioned first numerical coding audio signal, the above-mentioned second level ratio data is then represented the level ratio between above-mentioned second offset data and the above-mentioned second numerical coding audio signal, and the level of above-mentioned first and second numerical coding audio signals part is controlled according to the first and second level ratio datas respectively.
34. according to the device of claim 31, first and second readout devices wherein comprise the paired charger that in fact separates above-mentioned preset distance.
35. according to the device of claim 31, further comprise an error correction device, be used for proofreading and correct the error of the above-mentioned first and second numerical coding audio signals.
36. according to the device of claim 35, the quantity that the wherein above-mentioned quantity of crossing multiple error can be proofreaied and correct greater than above-mentioned error correction device.
37. a cinefilm player method may further comprise the steps:
Read the first numerical coding audio signal;
Read the second numerical coding audio signal, the described second numerical coding audio signal comprises the information that repeats with the above-mentioned first numerical coding audio signal, and a preset distance place after the traffic direction of film spatially is positioned at the above-mentioned first numerical coding audio signal;
The above-mentioned first numerical coding audio signal is postponed a predetermined amount of time, so that use the first and second above-mentioned numerical coding audio signals an identical time;
Whether judgement comprises the error of predetermined quantity in the above-mentioned first or second numerical coding audio signal; And
If one of above-mentioned first or second numerical coding audio signal comprises the error that is no less than above-mentioned predetermined quantity, just from another above-mentioned signal, select data.
38. one kind may further comprise the steps for the cinefilm Methods for Coding with digital accompaniment:
Print a large amount of picture frames along the film traffic direction;
Use up a numerical coding audio signal is recorded on the primary importance of the picture frame that upward coincide with respect to a time on the above-mentioned film;
Use up above-mentioned numerical coding audio signal is recorded on the second place of the picture frame that go up to coincide with respect to the above-mentioned time, make above-mentioned first and second positions a predetermined space interval be arranged along above-mentioned film traffic direction.
39. according to the method for claim 38, wherein above-mentioned predetermined space is approximately 17.8 picture frames at interval.
40. one kind comprises following combination with the numerical coding sound accompaniment for the cinefilm apparatus for encoding:
Be used to receive the device of a plurality of audio signals, described audio signal comprises the center, and secondary bass is left and right, LC, and right center, a left side is right around audio signal around reaching;
A left mixer is used to mix an above-mentioned left side, and a left side is around reaching the LC audio signal, to produce a left sound accompaniment compensating signal;
A right mixer is used to mix the above-mentioned right side, and is right around reaching right center audio signal, to produce a right sound accompaniment compensating signal;
A left traffic pilot is used for above-mentioned center audio signal, left audio signal, and the LC audio signal, a left side is around audio signal, and secondary bass audio signal and above-mentioned right sound accompaniment compensating signal carry out multipath conversion;
A right traffic pilot is used for above-mentioned center audio signal, right audio signal, and right center audio signal, right around audio signal, secondary bass audio signal and above-mentioned left sound accompaniment compensating signal carry out multipath conversion;
Be used for the output record of above-mentioned left traffic pilot as the device on the optical film band of the first digital sound channel;
Be used for the output record of above-mentioned right traffic pilot making the above-mentioned second digital sound channel and the above-mentioned first digital sound channel separate a predetermined distance as the device on the optical film band of the second digital sound channel along the traffic direction of film.
41. device according to claim 40, also comprise level ratio data generating apparatus, be used to produce a left level ratio data, an its representative above-mentioned left side compensation audio signal and an above-mentioned left side, a LC and a left side are around the relative signal level between the audio signal, and produce a right level ratio data, it represents the above-mentioned right offset data and the above-mentioned right side, right center and right around the relative signal level between the audio signal.
42. according to the device of claim 41, wherein above-mentioned left and right level ratio data and the above-mentioned left and right offset data that is produced by level ratio data generating apparatus is recorded on the above-mentioned optical film band together.
43. the device according to claim 40 further comprises:
The first level analysis device, be used to receive an above-mentioned left side, a LC and a left side are around audio signal and above-mentioned left sound accompaniment compensating signal, to an above-mentioned left sound accompaniment compensating signal and an above-mentioned left side, a LC and a left side are analyzed around the level ratio between the audio signal, and a left level ratio data of representing this level ratio is provided; And
The second level analysis device, be used to receive the above-mentioned right side, right center and right around audio signal and above-mentioned right compensation audio signal, the right audio signal and the above-mentioned right side to above-mentioned mixing, right center and rightly analyze around the level ratio between the audio signal, and a right level ratio data of representing this level ratio is provided.
44., further comprise a plurality of left scramblers and right scrambler, be used for receiving at least one of above-mentioned a plurality of audio signals, and provide left and right coding audio signal respectively to above-mentioned left and right traffic pilot according to the device of claim 43.
45. according to the device of claim 40, wherein above-mentioned left and right scrambler adopts the efficient compression coding mode that comprises sub-band coding and quadrature transform coding that above-mentioned audio signal is encoded.
46., also comprise first and second modulators that are respectively applied for the above-mentioned left and right coding audio signal of modulation according to the device of claim 44.
47. according to the device of claim 40, further comprise an error correction code generator, be used to produce error correction code and it is appended to the above-mentioned output of above-mentioned left and right traffic pilot, as the part of above-mentioned left and right digital sound trace record content.
48. a cinefilm comprises following combination:
Left passage numeral sound channel along the extension of film traffic direction;
Right passage numeral sound channel along the extension of film traffic direction;
Use up the above-mentioned left passage and the right passage sound accompaniment data that are recorded on the above-mentioned left and right acoustic channels;
Wherein representing the sound accompaniment data of identical in time left and right passage audio signal to be recorded in respectively on left passage and the right passage numeral sound channel both sides, and spatially be offset predetermined distance along the film traffic direction.
49. a cinefilm comprises following combination:
The first digital sound channel along the extension of film traffic direction;
The second digital sound channel along above-mentioned film traffic direction extension;
The above-mentioned first digital sound channel comprises represents a left sound channel and a data set that comprises the right passage mixture of right sound channel at least;
The above-mentioned second digital sound channel comprises represents a right sound channel and a data set that comprises the left passage mixture of left sound channel at least;
Wherein identical in time left and right sound channel data set quilt is record respectively, and has the spatial deviation of a preset distance along above-mentioned film traffic direction.
50. according to the film of claim 49, wherein above-mentioned right passage mixture comprises right around passage and right central passage.
51. according to the film of claim 49, wherein above-mentioned left passage mixture comprises that a left side is around passage and LC passage.
52. according to the film of claim 49, the above-mentioned first and second digital sound channels wherein comprise the data set of representing central passage separately.
53. according to the film of claim 49, the first and second wherein above-mentioned digital sound channels comprise the data set of representing secondary bass channel separately.
54. according to the film of claim 49, further comprise left and right level ratio data, represent the level ratio between above-mentioned left passage mixture and the above-mentioned right passage mixture respectively.
55. according to the film of claim 49, wherein above-mentioned right passage mixture comprises right environment passage, and above-mentioned left passage mixture comprises left environment passage.
56. the method from the cinefilm reproduction sound accompaniment of breakage comprises the following steps:
Adopt a kind of cinefilm, have the first digital sound channel and the second digital sound channel of extending on it along the film traffic direction, the above-mentioned first digital sound channel comprises has represented first stereo channel and a data set that comprises the first passage mixture of second stereo channel at least, the above-mentioned second digital sound channel comprises has represented second stereo channel and a data set that comprises the second channel mixture of first stereo channel at least, a wherein identical in time left side, right stereo channel data set quilt is record respectively, and making the two traffic direction along film is the spatial deviation that preset distance is arranged;
In the above-mentioned first digital sound channel, detect the data of damaging;
When detecting above-mentioned corrupt data, replace above-mentioned first stereo channel to be used for reproducing with above-mentioned second channel mixture.
57. the method from cinefilm reproduction sound accompaniment may further comprise the steps:
Read the first digital sound channel that comprises first stereo channel;
Read the second digital sound channel that comprises second stereo channel and a compensation channels;
If in the above-mentioned first digital sound channel, detect a kind of error that can't proofread and correct, just replace above-mentioned first stereo channel with above-mentioned compensation channels; And
Above-mentioned compensation channels and above-mentioned second stereo channel are converted to the audio signal of broadcast respectively, and represent above-mentioned first and second stereo channels respectively.
58. according to the method for claim 57, above-mentioned compensation channels wherein comprises above-mentioned first stereo channel that relevant with one at least environment passage mixes.
59. the method from cinefilm reproduction numerical coding audio signal may further comprise the steps:
Read the first numerical coding audio signal with first readout device;
Read the second numerical coding audio signal with second readout device, the second numerical coding audio signal wherein comprises and the above-mentioned first coding audio signal identical in time information, and audio signal is spaced a predetermined distance from is recorded on the above-mentioned cinefilm with above-mentioned first coding;
With deferred mount the above-mentioned first numerical coding audio signal is postponed a predetermined amount of time, so that use the above-mentioned first and second numerical coding audio signals an identical time;
Detect in the above-mentioned first or second numerical coding audio signal, whether to comprise the margin of error that to proofread and correct with error detector;
With decoding device the above-mentioned first and second numerical coding audio signals are decoded, the first and second decoding audio signals are provided thus; And
If the side in the above-mentioned first or second decoding audio signal comprises the above-mentioned margin of error that can't proofread and correct, just select data with data selection means the opposing party from the above-mentioned first or second decoding audio signal.
60. according to the method for claim 59, the above-mentioned first and second numerical coding audio signals wherein comprise first and second offset datas respectively, and may further comprise the steps:
Level ratio according to the above-mentioned first and second decoding audio signals, control above-mentioned first and second decoded signal part respectively with level controller, the above-mentioned level ratios of the above-mentioned first and second decoding audio signals are wherein represented level between above-mentioned first offset data and above-mentioned first decoded signal and the level between above-mentioned second offset data and above-mentioned second decoded signal respectively.
CN 94112780 1993-12-07 1994-12-07 Digital sound recording on motion picture film Pending CN1116729A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP306895/93 1993-12-07
JP30689693 1993-12-07
JP306896/93 1993-12-07
JP00667394A JP3488278B2 (en) 1993-12-07 1994-01-25 Movie film, recording method thereof, recording apparatus, and reproducing apparatus
JP6673/94 1994-01-25

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CN00101977.5A Division CN1269524A (en) 1993-12-07 2000-02-03 Digital sound-recording on cine film

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CN1116729A true CN1116729A (en) 1996-02-14

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CN 94112780 Pending CN1116729A (en) 1993-12-07 1994-12-07 Digital sound recording on motion picture film

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108597543A (en) * 2012-11-09 2018-09-28 甲骨文国际公司 Device and method for providing lengthwise position label in optical ribbon
CN109691138A (en) * 2016-10-04 2019-04-26 奥姆尼欧声音有限公司 Stereo expansion technique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108597543A (en) * 2012-11-09 2018-09-28 甲骨文国际公司 Device and method for providing lengthwise position label in optical ribbon
CN108597543B (en) * 2012-11-09 2020-07-07 甲骨文国际公司 Apparatus and method for providing longitudinal position markings on an optical tape
CN109691138A (en) * 2016-10-04 2019-04-26 奥姆尼欧声音有限公司 Stereo expansion technique

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JP3488278B2 (en) 2004-01-19

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