FR2867297A1 - Karaoke edition device for karaoke production and exploitation system, has audio track editor, synchronization guide generator and temporary sequence generator for generating scrolling pointer to be displayed on display medium - Google Patents

Abstract

The device has an audio track editor (6), synchronization guide generator (7) and a temporary sequence generator (8) for generating a scrolling pointer (P) intended to be displayed on a display medium (18) before starting of execution of new line of text of song. A displacement unit (13) moves the pointer according to detection of vocal characteristics of an audio part representative of the song. An independent claim is also included for a method of edition of karaoke on a video graph.

Description

Karaoke editing and playback devices and method

  The invention relates to karaoke editing and reading devices and to a karaoke editing method. In the state of the art, it is known to play or entertain society. which consists in playing a song while its only musical or instrumental accompaniment is performed by playing a music medium, such as an audio or video CD or a DVD.

  This technique, called play-back, became more playful when it was accompanied by the display on a screen of the text of the song (in alphabetical characters) which avoids the amateur interpreter the memory hole.

  This manner of playing is referred to as karaoke which will designate in the rest of the text the complete system for producing such a game or a recording of a work intended to be used in a karaoke playback device.

  This technique is sometimes supplemented by the addition of a video clip or video shortplay visualized during the execution of the musical part. The player, amateur performer, adds his voice to the recording. The text of the song is displayed and synchronized with the music by a colorization of the letters displayed by whole lines.

  A disadvantage of this technique is that it does not take into account the moment when the user has to start singing. Indeed, these systems display the text and then color it directly according to a predefined rhythm. As a result, the user does not know when to start singing and can therefore lose the thread of the song.

  Another disadvantage of this technique is that the rate of colorization of the text may be poorly synchronized with the rhythm of the lyrics of the song. Thus, the user who sings following the rhythm of colorization of the text can be totally out of sync with the rhythm of the lyrics. To summarize, the rhythm imposed by the colorization of the text does not correspond to the actual rhythm of the lyrics.

  Another disadvantage of this technique lies in the conventional method of colorization. It is active on the words really pronounced and inactive during the silences. As a result, during a line of singing composed of groups of words separated by silences, the singer can lose again the synchronization with the frozen progress of the recorded song.

  These various disadvantages do not allow the singer to perform the song in perfect synchronization with the music.

  The present invention provides a solution to these disadvantages.

  Indeed, the invention relates to a karaoke editing device in the form of a videogram, the editing device being of the kind comprising a means for recording at least the musical accompaniment of a song and where appropriate, the visual part of a video short film, so as to produce a readable videogram on a karaoke player, characterized in that it also comprises means for generating at least one scroll indicator for preventing a user of the start of a new phase of the song, so as to allow, at a later time during a reading of the edited videogram, at least one karaoke user to anticipate the progression of the song to be sung.

  According to another aspect of the invention, the means for generating a scroll indicator comprises means for producing a graphical representation on said videogram of a scroll pointer and which cooperates with means for determining the shape of the pointer, its position and display attributes like its color, its transparency.

  According to another aspect of the invention, the editing device also comprises means for recording a graphical representation of the text of a song to be chanted, said graphical representation being intended to be displayed in synchronism with the subsequent performance of the videogram and in that the means for generating a scroll pointer includes means for generating a vertical bar displayed across a horizontal line of text of the lyrics of the song to be sung.

  According to another aspect of the invention, the means for generating a scroll pointer cooperates with means for determining an insertion point on said display medium in relation to the performance of the karaoke and with a means for mobilizing each scroll pointer in relation to the visualization of the text of the sentence of the song to be sung.

  According to another aspect of the invention, the editing device also comprises a means for analyzing a pilot execution of the song of the song to be edited and for producing a pilot singing analysis signal and in that the means for mobilizing the pointer cooperates with means for detecting changes in the initial edge analysis signal which produces a rhythm break stop at each predetermined change and with means for determining a displacement law of said scroll pointer between two successive stops of breaking rhythm.

  According to another aspect of the invention, the editing device comprises means for generating at least one sequence of display and scrolling images of the scroll pointer on an image layer, added to the recording on the videogram. edition.

  According to another aspect of the invention, the editing device also comprises means for generating at least one sequence of images of the graphic representation of the text to be sung on a second image layer, added to the recording on the videogram. editing, so that the image layers will be displayed on a display medium in synchronism with time sequences representative of the vocal characteristics of the song.

  According to another aspect of the invention, the editing device also comprises means for generating at least one sequence of colorization images on a third image layer, added to the recording on the edited video record, so that the text of said second layer is colorized in synchronism with scrolling of the scroll pointer of the first image layer and so that the image layers are displayed on a display medium in synchronism with time sequences representative of the voice characteristics of the song .

  The invention also relates to a device for executing karaoke edited using a karaoke editing device according to the invention. The execution device comprises means for reading a videogram and means for indicating at least one scroll indicator, whose state is determined by said videogram.

  According to another aspect of the invention, the videogram is stored on a videogram server to be transmitted over a telephone network or the like so that it is executed on a mobile phone having an indication means such as a display.

  According to another aspect of the invention, the mobile phone on which the videogram is executed is also connected to a mobile communications operating center so that data is exchanged with the mobile phone such as instructions or the voice of the mobile phone. user running karaoke.

  The invention also relates to a method for editing karaoke on a videogram, characterized in that it comprises a step of generating a scroll indicator before the start of a new phase of the song in a predetermined time interval , so that the user has time to prepare to sing; to allow, at a later time during a reading (K) of the videogram (5), at least one karaoke user to follow in real time the progress of the lyrics to be sung according to the vocal characteristics of the song such as changes rhythms or silences.

  According to another aspect of the invention, the editing method comprises a step of mobilizing the scroll pointer, on a display medium, so that the pointer is mobilized in synchronism with the words to be sung according to the characteristics vocal of the song.

  According to another aspect of the invention, the editing method comprises a progressive colorization step of the text to be singed in synchronism with the scrolling of the scroll pointer.

  According to another aspect of the invention, the editing method comprises a step of deleting the display of the pointer on the display medium when a line of the text of the song has been sung.

  According to another aspect of the invention, the editing method comprises at least one of the following steps: a step of typing and cutting the text to be sung into lines of text so that lines of text can be displayed; text on a display medium; a step of generating A-type foreground image layers and B-type background image layers in relation to a text sequence; a step which consists of editing from a videogram the audio track containing only the lyrics of the song to be sung; a step of analyzing the audio track edited during the step to detect the voice characteristics of the song to generate timing cleats according to predetermined speech characteristics; a step of generating time sequences based on the synchronization cleats and image layers; a step of calculating from a time sequence and image layers of type A, the scrolling speeds of the pointer between each synchronization stop; a step consisting in making an assembly of the image layers on a karaoke videogram as a function of the different temporal sequences; a step of trimming the image layers mounted on the video track according to a temporal sequence and speeds; scrolling the pointer between each synchronization stop; a step which consists in recording the video track thus modified on a karaoke videogram executable on demand.

  According to another aspect of the invention, the editing method generates, in the case of a song performed by several singers, a separate color scroll pointer for each karaoke user who sings the text of one of the singers.

  According to another aspect of the invention, the editing method comprises, in the case of a song performed by several singers, a step of color gradual colorization distinct for each text to sing associated with each singer in synchronism with a pointer scrolling associated with the text to sing.

  The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows, with reference to the appended drawings in which: FIG. 1 schematically describes a complete system; production and operation of karaoke machines incorporating a karaoke editing device and a karaoke playback device of the invention; FIG. 2 illustrates a particular embodiment of a karaoke editing device based on the system of FIG. 1; FIG. 3 illustrates an application of the invention to a mobile telephone; Figure 4 illustrates another application of the invention to a mobile phone; FIGS. 5 (a) to 5 (e) schematically describe an operation implemented in a particular embodiment of the invention, particularly for synchronizing the display of the scroll pointer; FIG. 6 schematically depicts an operation for calculating the scrolling speeds of the pointer P on a display medium; FIGS. 7 (a) to 7 (c) schematically describe the mounting of the A-type and B-type image layers on a blank video track in synchronism with the time sequence H2; FIGS. 8 (a), 8 (b) and 8 (c) schematically describe the placement of the P-pointer image layers on the video track and the cropping cropping of the A-frame image layers of the video track in synchronism with the Ni speeds; moving the pointer P; - Figure 9 describes, in flowchart form, the method of the invention.

  Figure 1 schematically depicts a complete karaoke production and operation system incorporating a karaoke editing device and a karaoke playback device of the invention.

  The complete karaoke system of the exemplary embodiment of FIG. 1 comprises: a production studio St of an original videogram O; a device D for editing karaoke; - A k-karaoke playback device. A production studio St of an original videogram comprises a recording unit 4 well known in the state of the art which records: a singer O on at least a first audio track by example using a first set of microphones 2, the musical accompaniment of the interpreted song on at least a second audio track for example using a second set of microphones 3 or any other system io of mix well known in the state of the art, and simultaneously or later, and if necessary, a short video, captured using video cameras 1 or any other video editing system well known in the state of the art.

  The production studio St thus makes it possible to perform at least one reference performance or a pilot interpretation of the song in question. This pilot run will later be used in the karaoke editing process. It is therefore fixed or transmitted as a single element or as a component element of a pilot O videogram. The Videogram O produced may be broadcast by any means on any recording and / or broadcast medium by means of television broadcasting, the Internet, DVD video disc or otherwise.

  It will be understood that, in the context of the present invention, the content of such a recording may not include songs, but the speech of the original performer O in a cinema scene or the recitation of a play. . Such a recording may also have no video part. However, we will use the term videogram which corresponds to most of the examples of realization presented.

  The karaoke editing device D of the invention comprises: means 6 8 for generating at least one scroll pointer or pointer P intended to be displayed on at least one display medium 18 before starting the execution. a new line of the text of the song, or more generally before any predetermined change in the rhythm of the song - a means 9, 13 to mobilize each scrolling pointer P in relation to the visualization of the text of the line of the song to sing.

  More precisely, the editing device D comprises an editor of audio tracks 6 and, if appropriate, video tracks, which edits from the storage medium 5 the audio tracks of a song and the video track containing the short film. associated video.

  In a first editing step, the audiolvideo track editor 6 separates in the recording medium 5 the audio track of the pilot videogram O containing only the pilot execution of the singing of the song. This pilot run could be done directly during the editing process. The pilot performance of the song is performed by an experienced singer or reference. It is from such an execution that the editing device of the invention activates a means for analyzing a pilot execution of the song of the song to be edited and to produce a pilot singing analysis signal. As will be seen below, a means for mobilizing the pointer cooperates with means for detecting modifications of the analysis signal of the initial song. The actual changes of the analysis signal are compared to standard changes to produce a break stop at each predetermined change. Then, a means for determining a movement law of the scroll pointer between two successive cleats of rhythm rupture comes into play.

  The device comprises a synchronization clutch generator 7 which reads a reference of breaks of sequences and rhythms on said audio track edited by the audiolvideo track editor 6, in order to generate synchronization cleats on said audio track, so that the synchronization tabs i0 are positioned as marks displayed on the waveform graphically representing the audio track in time at the level of the silent type of speech characteristics, changes in timing A time sequence generator 8 generates a temporal sequence H3 constituted by a pulse sequence constituted so that a pulse of said time sequence H3 is produced with each synchronization stop.

  The device of the invention is connected to a computer 10 which makes it possible to enter the text of the lyrics of the song as well as display parameters such as the font of the characters, the size and the color of the font as well as the position of the text on a screen page. The text entered is intended to be subsequently displayed on a display medium 18. The computer 10 also serves as a tool for cutting the text into text sequences intended to be displayed on the display medium 18 during the reading a videogram, so that each sequence contains at most a fixed number of lines, like four lines for a better reading comfort. The obtained text sequences are stored in a memory MEM 16.

  An image layer generator 11 retrieves the different text sequences stored in the memory MEM 16 and generates for each of these text sequences image layers intended to be read on a display medium 18. In one embodiment, the generator of image layers 11 generates a first series of image layers of type A, representative of a scroll pointer and its movement, displayed in the foreground on a display medium 18.

  In another embodiment, the image layer generator 11 generates a second series of B-type image layers, representative of the text of the lyrics of the song and displayed in the background on a display medium 18.

  In another embodiment, the image layer generator 11 generates image layers for performing a colorization of the displayed text and which are interposed between the first and second aforementioned planes.

  The generation of these different image layers is described later.

  In one embodiment, the time sequence generator 8 generates a time sequence H1 and a time sequence H2 by exploiting the information of the audio track containing the text to be edited edited by the audio track editor 6 and from the layers image generated by the image layer generator 11. The time sequence H2 synchronizes the display of the previously described image layers on a display medium 18 in synchronism with the said time sequence H2. More particularly, the temporal sequence H2 makes it possible to synchronize the display of the image layers in synchronism with the beginning and the end of a line of a text sequence. The time sequence H1 makes it possible to synchronize the display of the image layers in synchronism with the beginning and the end of a text sequence. The time sequence H2 corresponds to the passage from one line to another during the reading of the displayed text and the time sequence H1 corresponds to the passage of a displayed image layer to another displayed image layer. The generation of time sequences H1 and H2 is explained later.

  In a particular embodiment, a unit for calculating the scrolling speeds of the pointer 9 determines the horizontal scrolling speeds of the pointer between each synchronization stop. From the synchronization cleats generated by the clapper generator 7 and the image layers generated by the image layer generator 11, a speed calculation unit 9 determines the speed of horizontal displacement of the scroll pointer on a display medium 18 For this, the speed calculation unit 9 evaluates the time elapsed between each synchronization stop and the pixel distance of the sequence of the sung text during this time interval. This distance in pixels depends essentially on the font and the size of the characters desired by the producer displayed on the screen.

  The time sequence generator 8 generates, from the time sequences H2 and H3, a time sequence H4 so that at each pulse of said time sequence H4 corresponds the appearance of the pointer on the display medium 18 or the disappearance of the pointer on the display medium 18. More particularly in the drawing, the representation of a rising edge corresponds to a beginning of the line and that of a falling edge corresponds to an end of line. The generation of the temporal sequence H4 is described later.

  The device comprises a mounting unit 12. This editing unit 12 stores on a videogram K the image layers so that the display of these image layers is performed in synchronism with the time sequence H1.

  The device comprises a mobilization unit 13 which generates the displacement of the pointer in synchronism with the temporal sequence H4 and as a function of the speeds calculated by the speed calculation unit 9 as well as, where appropriate, the colorization of the text in synchronism with the displacement of the pointer P. Once synchronization of the various data, the device records them on a video track of a videogram via a recording unit 14. The videogram K thus produced can be read by a player 15 which displays the video clip, the text to sing and the corresponding tools, namely the scroll pointer and, where appropriate, the colorization of the text, and which distributes the various audio tracks to a sound reproduction device.

  Finally, the device also comprises a memory MEM 16 for storing the various data used and obtained during the manufacture of the medium and a microprocessor 17 which controls and controls the various elements described above of the device of the invention.

  In Figure 2, there is shown an embodiment according to the principle of the invention as defined with the aid of Figure 2 in a working step.

  A videogram comprising at least one soundtrack representative of the sung part of a work intended to be transcribed in a videogram K for karaoke is inserted in a videogram reader O. Such a videogram can be recorded on a CD-type optical disc. Audio or DVD type. In this case the videogram reader O is a suitable reader.

  The playback output is processed on a sound track editor 6 which allows to separate the sung part of the processed work from the rest of the videogram. Of course, the invention can be applied with less efficiency on a complex audio part mixing the sung part with the instrumental parts.

  The signal representative of the sung part is then processed by a voice characteristic detector 8 which makes it possible to detect vocal characteristics specifying a change of rhythm in the song which makes it possible to predict, in relation to the temporal sequence of the videogram O, the behavior of the karaoke singer. Particularly, it is thus possible to prevent the karaoke singer that a resumption of the song will intervene in a prefix duration such as a second for example, that a silence is in progress, that an acceleration or a slowdown of the song is in progress, etc., displaying a predetermined representation of the scroll pointer. Of course, the scroll pointer P can be replaced by any scrolling indicator, especially acoustic, allowing the karaoke singer to anticipate the later phase of the song.

  With the aid of the detection of such voice characteristics which will be explained below, a generator of cleats 7 makes it possible to produce stop signals of several kinds. A cleat is constituted by a pulse that rises to an active value at a given date, for example expressed in seconds since the start of the videogram, when it is unrolled in a normal manner.

  By detecting such a cleat, the device of the invention is then able to produce an action to signal to the karaoke singer a modification of the song such as a change of pace, a restart, etc. . The signaling to the singer is preferably performed on a new videogram, designated videogram K, which is specially designed to be used in a karaoke session.

  To this end, the device of the invention comprises a circuit for generating a plurality of layers of synchronized images on the input videogram O and the lugs detected by the clapper generator. The circuit mainly comprises: a video memory 11 composed of one to three image layers, namely: necessarily an image layer PB in which the scroll bar P will be displayed, for example, in a start area D to the left of the start of a future line of text display and this, before the start of a new phase of singing, and mobilized according to the translation direction shown; preferentially a second image layer PT serving as a text plane, in which the graphic representation of the lines of text as Line 1 will be displayed as the videogram is executed; optionally a third PC image layer of colorization plane, in which an RC coloring rectangle will cropped cropped in synchronism with the advancement of the scroll bar PB of the image plane PB as it is visible in the drawing, so that a PC increasing portion of each line successively as the Line 1 line will be colorized on the final display of the karaoke playback device; to serve the image plane PB a fade generator F which makes it possible to ensure the return of the scrollbar P at the end of each line as Line 1; a translational generator TR for translating the bar P; and - a scrollbar generator PB lo which are all connected by activation inputs to the stop generator to work in synchronism with the detection of predetermined breaks detected on the audio track; - to serve the PC image plane - a col colorization generator that generates a colorization rectangle whose color and other characteristics are freely determinable - - a cropping generator Ro which by trimming allows according to the progress of the bar scrolling P 20 makes it possible to advance the front of the colorized rectangle RC as it is visible in FIG. 2; both of which are connected by activation inputs to the stop generator to work in synchronism with the detection of predetermined breaks detected on the audio track; to serve the image plane PT - - a text generator GT which makes it possible to compose the lines of text in synchronism with the stops which is thus connected by activation inputs to the generator of stops to work in synchronism with the detection of predetermined breaks detected on the audio track.

  According to the invention, a first image layer is placed in the foreground in the videogram K and which allows the appearance of a bar graph or any other inscription of the same kind including an icon or even a reduced image, fixed or sequential like an image in an image (Picture in picture). Such a graphic bar is then moved and if necessary stopped, and / or erased during its journey in the image field intended to be displayed so as to indicate to the karaoke user the rhythm transitions, the silence and other vocal characteristics. rendered in the sound track analyzed by the voice characteristic detector.

  Preferably, a second image layer is placed in the background of the image layer containing the aforesaid bar on which is inscribed the text of the song which is running in the videogram sequence.

  It is known to colorize the text of the second image layer running in the course of the song. For this purpose, the text of the song is entered in text mode as characters whose font, size, style and color attributes are determined. In this case, a third image layer is placed in an intermediate plane between the foreground of the image plane containing the bar of the invention and the rear plane of the image plane containing the current text of the song.

  Preferably, in this case, the coloring front moves in the reading direction and the transition between the text base color and the colorization color of the text in the course of a song is slaved to move with the scroll pointer in bar shape in the foreground image layer.

  According to the variants, the foreground of the image layer of the bar, the background of the text image layer and / or the plane of the colorization image layer are then mixed with the rest of the videogram O read on the videogram reader O to produce a videogram K intended to be reproduced on a karaoke machine.

  For this purpose, the videogram editor K has a first input capable of mixing the one, two or three image layers mentioned above, repeated for each frame or each frame sequence of the original videogram O read on the videogram reader O. videogram editor K includes a second input capable of mixing one or more image layers, one or more audio tracks and, where appropriate, computer-type multimedia sequences from the videogram O read on the video recorder O in action. The videogram editor K has an output capable of mixing the video, graphics, audio or computer objects presented on the first and second inputs so as to produce the videogram K for later reproduction on a karaoke playback apparatus.

  Such a videogram K may be transmitted on a transmission line during a broadcast broadcast, a television program, on an Internet program.

  Such videogram K can be stored on a medium of any kind such as a CD-Audio optical disc, CD-Video, mixed CD, DVD or magnetic as a hard disk or a magnetic tape.

  At the output of the clapper generator, a plurality of clapper signals are generated so as to activate at least one scroll bar generator in the first image layer displayed in the foreground of the videogram K. Such a scrollbar generator allows selection of a scrollbar and give it a configuration of shapes, colors, various aspects to the freedom of the skilled person. However, preferentially when the scroll bar is provided in relation to the display of the text of a song in progress, the scroll bar is constituted by an elongated figure whose largest dimension is substantially perpendicular to the line of text being played.

  Similarly, the trajectory, generally rectilinear, of the scroll bar is determined by its shape its starting point and its point of arrival. Such a definition may be implicit, for example if the scrollbar is provided in connection with the display of the text of the song being played. In particular, several lines of text of the song can be superimposed on the other layers in the so-called text plane. This practice is already well known in the field of karaoke and will not be more described.

  Thus, in the image plane of the scrollbar shown is the trace of three lines of text display that the scroll bar will successively follow in sequence during the performance of the videogram K in a karaoke machine.

  According to an advantageous characteristic of the invention, particularly when the song marks a time of silence before the start of a new line, the scroll bar is displayed in the image plane which it receives in the margin to the left of the line on which she will parade. The bar generator is then activated so that the bar produced by the scroll bar generator then takes on a predefined appearance characteristic of a wait for a prefix duration, for example of one second, during which the bar generated by the generator scroll bars take a color or attribute determined as a blink. When the videogram K will be run on a videogram reader K, the bar will thus appear in this way which prevents the singer that he will soon have to execute the song line in front of which the scrollbar is arranged.

  Returning to the videogram editing device K, by receiving a clipping signal from the clapper generator, a translation operation of the scroll bar is then performed by means of the translation generator connected to the memory of the layer image of scroll bars. The scroll bar is then slaved to move along the line 1 in Figure 3, there is shown a particular embodiment of a mobile phone karaoke operating device 31. It will be understood that a such a karaoke operating device can also be constituted on the basis of a personal data assistant (Personal Data Assistant in English) provided with a means of connection to a mobile telephone network, for example of the GSM type, but also GPRS and / or UMTS. The mobile telephone 31 of the embodiment essentially comprises a connection means for receiving a type K videogram produced by an editing device according to the invention, specified in particular with the aid of Figures 1 and 2 and held by a producer of videograms K 30.

  The connection means is in a first embodiment consisting of a communication line for example based on a multimedia message queue (for example according to the MMS Multi Messaging System protocol).

  The connection means is in a second embodiment constituted by the transmission of a multimedia file for example by postal way in the form of a memory card which can be inserted into a memory card reader (not shown in FIG. 3).

  The sequence of images and sounds contained in the type K videogram is then unrolled and stored temporarily in a buffer memory 32 of the mobile phone. A software application that is well known to those skilled in the art makes it possible to constitute an MPEG standard reader 33, a first sound output of which is directed to a loudspeaker 35 of the mobile telephone, particularly to produce the music recorded in the videogram K being played. .

  A second output of the MPEG file reader 33 is directed to a display resource 34 of the mobile phone 31.

  It essentially contains the display of a scroll pointer which has been produced in the videogram K as indicated above by the karaoke editing device of the invention.

  In one variant, the scroll pointer is displayed on the display 34 in the foreground of the display of the text of the song contained and executed in the videogram K locally on the mobile telephone 31.

  In a variant, the text displayed on the display 34 is colorized in synchronism with the evolution of the scroll pointer according to the sequence edited by the karaoke editing device of the invention held at the level of the videogram producer K 30.

  In a variant, a sequence of still images, as in a slide show, or a sequence of moving images, such as an MPEG sequence, is displayed on the display 34 from the videogram K as indicated above by the device. karaoke edition of the invention.

  In particular, the user of the mobile telephone 31 can at the same time as the videogram K is run on con terminal, establish on another communication channel a communication with a correspondent for example by transmitting his voice during playback of karaoke. This additional communication as well as the broadcasting of the videogram K can be controlled by the producer of videograms K 30 for example in the game operation.

  FIG. 4 shows a particular embodiment of a karaoke operating device, based on a mobile telephone 43, which can also be constituted as described with reference to FIG. The mobile telephone 43, or any other mobile device connected to a mobile communications network, is connected by a mobile communications channel to a broadcasting center 52 of videograms K produced by an editing device according to the invention.

  K videogramming means 41 is connected to a codec decoder coder 44 which serves as an interface between the mobile telephone 43 and the mobile communications network on which the karaoke is performed.

  The codec 44 is internally connected to the mobile telephone 43 as is known to those skilled in the art with a software application 51 based on a local processor (not shown) a working memory space and various resources known to the user. professional. Such a software application is programmed on the basis of an embedded Java compiler.

  The software application 51 can be downloaded in the form of a Java applet from the broadcast center 52 and is executed on the mobile telephone so as to activate a sequence of operation of the videogram K transferred by the video production means K 41. An unrepresented Java servlet is implemented on the side of the mobile communications network where the broadcast station is located, preferably in a mobile communications operations center 42 connected by a suitable communications channel with the codec 44.

  Preferably, several mobile telephones 43 can be managed sequentially or concurrently by the broadcast center 52.

  The software application 51 of the mobile telephone 43 then distributes the data of the videogram K received to a memory 45 and to a reader of audio-visual or multimedia sequences 46 whose visual part is transmitted to a display 47 and the audio part to a loudspeaker (shown without reference). These different means function as the identical means of the mobile phone 31 of Figure 3 and will not be described further.

  Furthermore, the application 51 can send instructions in graphic form to the display 47 or in sound or voice form to the speaker of the mobile phone to give operating instructions to the user of the mobile phone 43 during the execution In response, the user can use the microphone 50 to communicate with the mobile communications operations center 42 or even use the keyboard and the pointing device conventionally constituting a conventional user input means 49 on mobile telephones. . The microphone 50 and the input means 49 are conventionally connected to a detection means to be managed by the software application 51 so as to return the actions of the user of the mobile phone 43 to the mobile communications operations center 42 .

  Particularly, the voice of the user performing the karaoke based on the videogram K displayed and played on the mobile phone 43 is thus available at the mobile communications operations center. Such a provision can be used especially during an interactive broadcast of radio or television.

  The generation of synchronization cleats will now be described using FIGS. 5 (a) to 5 (e), which respectively describe the audio track representative of the vocal part to be sung and different temporal sequences H1 to H4 which will be explained later. .

  The synchronization clutch generator 7 includes means for analyzing the audio track containing the lyrics of the song edited by the audio track editor 6, based on the O videogram from the recording studio. The means for analyzing the audio track of the vocal part essentially comprises: a circuit for evaluating the instantaneous amplitude of the sound on the audio track; and a circuit for detecting a speech characteristic such as a word start, a silence based on the detection of a threshold amplitude.

  The circuit for evaluating the instantaneous amplitude is well known to those skilled in the art. Likewise, a circuit for detecting a word start or a silence by detecting that the amplitude is greater than a word start threshold or less than a silence level threshold is also well known to those skilled in the art.

  The analysis of the audio amplitude of the audio track of the vocal part is conducted to detect the temporal position of specific vocal characteristics of the song as the beginning and the end of each word and each line. The cleat generator sets up a timing cleat in connection with said audio track at these voice characteristics. These vocal features may be: - a silence, - a change of rhythm, - any other recognizable break in a vocal characteristic.

  The synchronization clutch generator 7 also sets timing clocks at the beginning and end of each line, as well as at the beginning and end of each word. If several stops coincide, the synchronization cleats generator 7 retains only one. Of course, the invention does not require the user to place a stopper to each detected voice characteristic and it is possible to retain, for the installation of the cleats, only the most marked vocal characteristics on the audio track.

  In one embodiment, the time sequence generator 8 includes means for detecting on the audio track the timing position of the timing cleats and includes means for generating a time sequence H3 based on the time position of the clocks. synchronization. Thus, the time sequence generator 8 generates rising edges on the time sequence H3 so that each edge corresponds to the time position of a synchronization stop. Therefore, the time sequence H3 is representative of the time position of the synchronization stops.

  In another embodiment, the time sequence generator 8 comprises means for detecting the time positions corresponding to the end of the lines of the text sequences and means for generating rising edges on a time sequence H1, so that each edge corresponds to the temporal position of an end of line of a text sequence.

  In another embodiment, the time sequence generator 8 includes means for detecting the time position of an end of a text sequence and includes means for generating rising edges on a time sequence H2, so that at each The temporal sequence H2 corresponds to the temporal position of an end of a text sequence.

  In another embodiment, the temporal sequence generator 8 comprises means for detecting the edges of the time sequences H2 and H3 which coincide, that is to say to detect the fronts which correspond to the temporal position of an end of line on the time sequence H3 and includes means for detecting the edges on the time sequence H3 which follow said detected edges. The time sequence generator 8 also comprises a means for determining the time intervals between said detected fronts and the fronts that follow them. The time sequence generator 8 generates falling edges on a time sequence H4, so that the falling edges of said time sequence H4 correspond to the detected edges of the time sequence H3.

  The time sequence generator 8 then generates rising edges as a function of the determined time intervals.

  If this time interval is greater than one second, the time sequence generator 8 generates a rising edge on the time sequence H4, so that this edge appears one second before the edge that succeeds the edge corresponding to an end of line. If this delay is less than one second, the time sequence generator 8 generates a falling edge on the time sequence H4, so that this rising edge follows the falling edge in a time equal to the time interval. The time sequence H4 represents the time positions of appearance and disappearance of the scroll pointer on a display medium 18. The rising edge corresponds to the appearance of the pointer and the falling edge to the disappearance of the pointer.

  FIGS. 6 (c), 6 (d), 6 (e) and 6 (f) schematically describe an embodiment for calculating the speeds of movement of the pointer P between each synchronization stop.

  Figure 6 (c) represents the audio track containing the lyrics of the text to be sung.

  Figure 6 (d) shows the time sequence H2. Figure 6 (e) shows the time sequence H3.

  Figure 6 (f) shows the text sequences displayed on a display medium.

  The speed calculation unit 9 comprises means for correlating the time sequences H2 and H3 in order to determine the fronts common to the two time sequences, ie to determine on the temporal sequence H3 the fronts corresponding to an end of line (index b in Figure 6). The speed calculation unit 9 also comprises a means for detecting on the time sequence H3 the fronts corresponding to a start of a line (index A in FIG. 6).

  The speed calculation unit 9 comprises means for determining the time intervals IT; on the temporal sequence H3 between a front a and the front which follows it provided that said front does not correspond to a front b and comprises means for determining the distance in pixels d; text displayed during the associated IT1 time interval.

  Finally, the speed calculation unit 9 comprises a means for calculating the speeds v; on the basis of a function f such that v; = f (IT ;, d;).

  The speed calculation unit 9 records the speeds calculated in a memory MEM 16.

  Figures 7 (a), 7 (b) and 7 (c) schematically describe the mounting of the A-type and B-type image layers on a blank video track in synchronism with the time sequence H2.

  FIG. 7 (a) shows the A-type and B-type image layers stored in the memory MEM 16.

  Figure 7 (b) shows the video track containing the A-type and B-type image layers. Figure 7 (c) shows the time sequence H2. The editing unit 12 retrieves from the memory MEM 16 the image layers of type A and type B. The editing unit 12 comprises means for generating a video track displaying the image layers of type A and type B in synchronism with the temporal sequence H2.

  At each edge of the time sequence H2, the mounting unit 12 positions a type A image layer and the associated type B image layer, so that the image layers of type A appear in the foreground on the support 18 and the image layers of type B appear in the second plane on the display medium 18. The video track obtained is therefore a succession of fixed image layers which succeed one another in synchronism with the temporal sequence H2 and of which only the layers Type A images are visible on the display medium 18, the B-type image layers being in the background.

  FIGS. 8 (a), 8 (b) and 8 (c) schematically describe the placement of the image layers of the pointer P on the video track and the cropping cropping of the image-type A-layers of the video track in synchronism with the speeds v; The cropping trimming has the function of cutting off the left part of an image layer A whose delimitation corresponds to the current position of the pointer P, so that the image layer B situated below the image layer A can be visible. In the context of the invention, cropping cropping aims to give an impression of progressive colorization of the text to sing. Trimming is performed in synchronism with the scrolling of the pointer P, that is to say that at a given position of the pointer, the left part of the image layer is truncated. The scrolling of the pointer P, in turn, depends on the scrolling speeds calculated by the speed calculation unit 9.

  In order to better understand the cropping cropping, a text sequence between two cleats is taken into account, the speed v; pointer P being constant between these two cleats. Thus the video editing made between two tabs comprises a first image layer A, a second image layer and finally a third image layer of the pointer P. The various image layers are superimposed, so that the image layer A is in the foreground and that the image layer B is in the background. Thus the image layer B is not visible. The image layer of the pointer P covers the image layers A and B. Between these two cleats, the pointer moves at a predetermined speed v; As the pointer moves, the text stream scanned by the pointer is colorized at the same speed. Thus, at each position of the pointer, the part to the left of the position of the pointer P of the image layer A is cut off or truncated, which reveals the portion of the position of the pointer P of the image layer B. The device of FIG. the invention simultaneously records these changes of states on a blank video track. The result obtained is therefore a gradual colorization of the text in synchronism with the speed vi of displacement of the pointer P. Thus, the cropping cropping unit 13 comprises a means for detecting the edges of the temporal sequence H3 and retrieves from the memory MEM 16 the associated speeds of the pointer between each edge of said temporal sequence H3. The cropping cropping unit 13 comprises means for positioning in time on the video track the image layers of the pointer P as a function of the speeds v; of displacement. The cropping cropping unit 13 also includes means for cropping (or truncating) the left portion of the A-type image layer delimited by the position of the pointer P on the abscissa axis. The cropping cropping thus reveals the image layers B of the second plane, which gives a gradual impression of colorization.

  Figure 9 depicts in flowchart form the method of the invention.

  The method comprises, so as to allow, at a later time during a reading (K) of the storage medium (5), at least one karaoke user to follow in real time the progression of the lyrics to be sung according to the vocal characteristics. of the song such as changes of rhythms or silences: a step of generating a scrolling pointer (P) intended to be viewed on a display medium (18) before the start of a new sentence of the text of the song in a predetermined time interval, so that the user has time to prepare to sing; a step of mobilizing the scrolling pointer (P), on the display medium (18), so that the pointer (P) is mobilized in synchronism with the lyrics to be sung according to the vocal characteristics of the song.

  The method also comprises a progressive colorization step of the text to be synchronized with the scrolling of the scrolling pointer (P).

  More particularly, in a first step E1, the method of the invention consists in grasping and cutting the text to be sung in a text sequence so that, when the text sequence is displayed on a display medium 18, said text sequence contains at most four lines.

  In a second step E2, the method of the invention consists in generating image layers of type A, text sequences, image layers of type B, text sequences and image layers of the pointer P. The different image layers thus generated are stored in a memory MEM 16.

  In a third step E3, the method consists in editing from a memory medium 5 the audio track containing only the lyrics of the song to be sung.

  In a fourth step E4, the method of the invention consists of processing the audio track edited in step E3 and generating synchronization stops according to the vocal characteristics of said audio track.

  In a fifth step E5, the method of the invention consists in generating, on the basis of the synchronization stops and the image layers A and B, temporal sequences H1, H2, H3 and H4. The time sequence H1 is representative of the time position of the end of each text sequence. The time sequence H2 is representative of the time position of the end of each line of each text sequence. The time sequence H3 is representative of the temporal position of the synchronization stops. The temporal sequence H4 is representative of the time positions of appearance and disappearance of the pointer P on a display medium 18.

  In a sixth step E6, the method of the invention consists in calculating, from the time sequences H2 and H3, the time intervals IT1 between each synchronization stop and from the image layers of type A, the distances d; in pixel text sequences associated with IT time intervals; The method then consists in calculating on a basis of a function f () the velocities v; such that v; = f (IT ;, d;). In a seventh step E7, the method of the invention consists of mounting the different image layers generated in step E2 on a blank video track according to the time sequence H2 determined in step E5.

  In an eighth step E8, the method of the invention consists in cropping the image layers, mounted on a video track during step E7, between each synchronization stop as a function of the time sequence H4 and the speeds v ; moving the pointer P between each synchronization stop.

  In a last and ninth step E9, the method of the invention consists in recording the video track thus produced on a memory medium, intended to be read in a reader 15 adapted to the memory medium.

  It will be understood in particular, in the context of the present invention, that the editing process generates, in the case of a song sung by several performers, as many scrolling pointers P, of distinct colors, that there are singers.

  Similarly, still in the case of a song sung by several performers, the editing process generates image layers, in accordance with the requirements of the invention, texts of each singer. Of course, the color used for the coloring of the texts is different from one singer to another.

Claims (18)

  1. Apparatus for editing karaoke in the form of a videogram (5), the editing device being of the kind comprising a means (St) for recording at least the musical accompaniment of a song and, where appropriate, the visual part of a video short film, so as to produce a videogram (5) readable on a karaoke player, characterized in that it also comprises a means (6 8) for generating at least one scrolling indicator P for to warn a user of the subsequent start of a new phase of the song, so as to allow, at a later time during a reading (K) of the edited videogram (5), at least one karaoke user to anticipate the progression of the song to sing.   2. Device according to claim 1, characterized in that the means for generating a scroll indicator comprises means for producing a graphical representation on said videogram of a scroll pointer and which cooperates with means for determining the shape of the pointer, its position and display attributes like its color, its transparency.   3. Device according to claim 2, characterized in that it also comprises means (10) for recording a graphical representation of the text of a song to be chanted, said graphical representation being intended to be displayed in synchronism with the subsequent performance. of the videogram and that the means for generating a scroll pointer includes means for generating a vertical bar displayed across a horizontal line of text of the lyrics of the song to be sung.   4. Device according to any one of claims 2 or 3, characterized in that the means for generating a scroll pointer cooperates with a means for determining an insertion point on said display medium in relation to the execution of the karaoke and with a means (9, 13) for mobilizing each scrolling pointer P in relation to the visualization of the text of the sentence of the song to be sung; 5. Device according to claim 4, characterized in that it also comprises a means for analyzing a pilot execution s of the song of the song to be edited and to produce an analysis signal of the initial song and that the means to mobilize the pointer cooperates with a means for detecting modifications of the initial singing detection signal which makes it possible to produce a break stopper at each predetermined change and with means for determining a displacement law of said scroll pointer between two successive stops of breaking rhythm.   6. Device according to any one of claims 3 to 5, characterized in that it comprises means for generating at least one sequence of display and scrolling images of the scroll pointer on an image layer, added to the recording on the videogram (5) in edition.   7. Device according to claim 6, characterized in that it also comprises means for generating at least one sequence of images of the graphical representation of the text to be sung on a second image layer, added to the recording on the videogram. (5) editing, so that the image layers will be displayed on a display medium (18) in synchronism with time sequences representative of the vocal characteristics of the song.   8. Device according to claim 7, characterized in that it also comprises a means for generating at least one sequence of colorization images on a third image layer, added to the recording on the videogram (5) in edition, of so that the text of said second layer is colorized in synchronism with scrolling of the scroll pointer of the first image layer and so that the image layers are displayed on a display medium (18) in synchronism with time sequences representative of vocal features of the song.   9. Device for performing karaoke edited using a karaoke editing device according to one of the preceding claims, characterized in that it comprises a reading means of a videogram (K) and a means for indicating at least one scroll indicator whose state is determined by said videogram (K).   10. Device according to claim 9, characterized in that the videogram (K) is stored on a videogram server (K 30) to be transmitted over a telephone network or the like so that it is executed on a telephone mobile device (31) comprising indicating means such as a display (34); 11. Device according to claim 9, characterized in that the mobile phone on which the videogram (K) is executed is also connected to a mobile communications operating center (42) so that it is exchanged with the mobile telephone (43). ) data such as instructions or the voice of the user running karaoke.   12. A method of editing karaoke on a videogram (5), characterized in that it comprises a step of generating a scrolling indicator (P) before the start of a new phase of the song in a range of predetermined time, so that the user has time to prepare to sing; so as to allow, at a later time during a reading (K) of the storage medium (5), at least one karaoke user to follow in real time the progress of the lyrics to be sung according to the vocal characteristics of the song such as changes of rhythm or silence.   13. The method of claim 12, characterized in that it comprises a step of mobilizing the scroll pointer (P), on a display medium (18), so that the pointer (P) is mobilized in synchronism with the lyrics to be sung according to the vocal characteristics of the song; 14. The method of claim 13, characterized in that it comprises a progressive colorization step of the text to sing in synchronism with the scrolling scroll pointer (P).   15. Method according to claim 13, characterized in that it comprises a step of deleting the display of the pointer (P) on the display medium (18) when a line of the text of the song was sung.   16. A method according to any one of claims 12 and 15, characterized in that it comprises at least one of the following steps: a step (El) which consists of entering and cutting the text to sing in lines of text so that lines of text can be displayed on a display medium (18); a step (E2) of generating A-type foreground image layers and B-type background image layers in relation to a text sequence; a step (E3) of editing from a videogram (5) the audio track containing only the lyrics of the song to be sung; a step (E4) of analyzing the audio track edited in step (E3) to detect the voice characteristics of the song to generate timing cleats based on predetermined speech characteristics; a step (E5) of generating time sequences based on the timing cleats and image layers; a step (E6) of calculating from a time sequence and image layers of type A, the scrolling speeds of the pointer between each synchronization stop; a step (E7) which consists of making an assembly of the image layers on videogram of karaoke according to the different temporal sequences; a step (E8) of trimming the image layers mounted on the video track in accordance with a time sequence and the scrolling speeds of the pointer between each synchronization stop; a step (E9) which consists of recording the video track thus modified on a videogram of karaoke executable to the request.   17. A method according to any one of claims 12 to 16, characterized in that it generates, in the case of a song performed by several singers, a separate color scrolling pointer (P) for each karaoke user who sings the text of one of the singers.   18. A method according to any one of claims 12 to 17, characterized in that it comprises, in the case of a song interpreted by several singers, a step of gradual colorization of distinct color for each text to sing associated with each singer in synchronism with a scroll pointer associated with the text to be sung.