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. ~. . ..._. .: ..... ... .. ' CONTACT AND ROTATORY MOTION DETECTION METHOD
E3 ~ RCES BY HAND ON A CONTROL DISC AND STEERING DEVICE
READING INFORMATION TO ENABLE IT IN ~ 1VRE
The present invention relates to the field of piloting reading information from a controller turning point and in particular to the adaptations allowing to translate faithfully on said reading, the nuances brought by the user on the rotation of said member.
At the beginning of the 80s, the disc jockey launched a technique of manipulating the rotation of a disc microgroove playing on a turntable disc, so as to create, from sounds played in this way, a rhythm characteristic of “Hip-Hop” music. They have called this technique "Scratch", the reading needle being forced, during this manipulation, to scrape back and forth on small excursions said disc, which they call "vinyl record". Long before this technique was not popularized, it was first used by the noisemakers, in cinematographic postproduction, on magnetic tapes, to block noise attack recorded in order to launch it in perfect synchronization with the chosen image. Before the arrival of the aircraft digital, these sound effects professionals manipulated the reel by winding or unwinding the soundtrack so that obtain a sound result quite comparable to that created, later, by jockeys discs.
Since then, noise makers have adopted samplers digital sounds. As for the disc jockeys, waiting for a device capable of faithfully respecting the sensations that provide the "Scratch", they continued to use the microgroove discs to "scratch", inciting the most great specialists to do a lot of research for meet their expectations. Faced with the demand for said discs jockeys, studies have been conducted to develop devices for controlling the reading of samples digital audio from a control disc, so to try to find the possibilities of manipulation of the information engraved on a microgroove disc by the ~~ u ~~~ .E ~ ou ~ t ~~~
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~ 1 1 1 ~ ~ 1 ~ 1 ~ 1 ~ ~ ~ 1 ~ ~ ~ AA. . . . ~ - ~ ~ ~~ 1 ~ tr 1 Scratch technique. Many devices have been proposed jockeys, some even have been patented as in testifies the Japanese patent n ° 06089501 published on March 29 1994. Indeed, said patent protects a process and device allowing, in particular, to control the reading of information sound stored digitally in a buffer according to the direction, speed and rotation distance of a disc turning thanks to a motor, this automatic rotation can be modified "in force" by the hand of a user for a manipulation of the type operated by DJs, 'during the "scratch" for example. Although said process and device has been in the public domain for many years in all countries except Japan, jockeys "Scratch" fans called "DJ Hip-Hop" or "vinyl-killers"
are still looking for a device capable of control the playback of a digital sound sample, providing the same tactile and auditory sensations as those they know by "scratching" the "discs vinyls ”. Still disappointed with digital substitutes proposed and fearing the disappearance of said discs at advantage of digital compact discs which do not allow not the "Scratch", the "Hip-Hop DJs" remain fervent defenders of the "vinyl record" and regularly organize championships which are attracting more and more fans of several dozen countries spread across the world, where "Scratch" is the fundamental technique of these competitions.
The jockeys discs remain dissatisfied with the devices that have been presented to them so far by specialized companies. All those who try to meet their needs by developing devices, more or less close to the process described in the above-mentioned patent, use disc rotation detection means known and of the type described in particular in the patent American 5,350,882 published September 27, 1994 and belonging as the first patent cited to the same company.
However, in practice, these digital detection means of the type optical or magnetic, as precise as they are, do not FER t ~ i ~ L. ~ ~ np ~ F ~ EE
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not guarantee permanent detection of rotation because they use binary coding of the rotating element at detect. These detection means have "gaps"
for speed and direction of rotation 'S caused by the alternation of the two states of the binary.
1 = speed information, direction of rotation, 0 = no speed information, direction of rotation.
Thus, from this binary coding results information imprecise on the rotational speed microvariations, and on successive reversals of meaning on weak rotation excursions, movement characteristics exerted on the disc during the "Scratch" technique. From this whatever the traditional means of detecting rotation used ("encoder or incremental encoder", system _ peripheral alternating small magnets of opposite poles and "Hall effect" sensor, principle of optical recognition of "barcode" type, or any other means of detection optoelectronic or electromagnetic), the result of control of the sound memory playback, from the rotating control disc is disappointing. Indeed, with a traditional rotation angle detector of the type of those mentioned above, the relationship between the rotation distance traveled with the control disc corresponds so satisfactory with the amount of musical information read. In however, due to coding quantification error binary, the correspondence between the effects of changes in speed and direction exerted on said disc, with the tips of fingers, and, the sound effects obtained from this handling, is not perfect, thing totally inconceivable for "DJ Hip-Hop". Scratch technical on microgroove disc creates very subtle nuances on the reading information from rotary movements finely dosed on the disc by said DJ, nuances which are not found by exercising the same movements on a control disc as one of the devices offered until now. In addition, to manage information stored in the memory, these means of detection and translation of the rotary movement use a SHEET A ~ 90UIFIEE
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:: ::.:. .. :: ' combination of elements not very easy to implement, these means being, also, relatively expensive.
In the end, for want of nothing better, “Hip-Hop DJs” always have the turntable for reference S disc on which the “Scratch” technique was born there more than fifteen years, platinum which has not stopped since growing commercial success. .
If the specialized companies have still not designed a digital information control device capable of fully satisfy the "Hip-Hop DJs", some of them they looked for ways to enrich the dexterity of DJ when handling "Scratch", such as felts specially studied for this discipline. Said felt, placed between the microgroove disc and the tray turntable, is designed so so that it keeps permanent contact with said disc.
It slides on the turntable during sharp changes steering, sudden acceleration and braking of rotation, characteristics of the "Scratch" exercised by the "DJ
Hip-Hop "on said disc, without disturbing the nominal speed controlled rotation of said motorized turntable. She hangs on the board after the “Scratch” period which relaunch the disc at nominal read speed instantly. So the resistance of the disc under the finger of the DJ during the "Scratch" is very minimal, which facilitates the ease of movement applied to said disc and gives greater freedom of expression in "vinyl killer".
However, all the devices thought for the "DJ
Hip-Hop "could manipulate a digital sound sample to from the control of the rotation of a disc, do not respect not the DJ's tactile sensations Most often, the disc rotation is not automatic when playing back nominal speed of the sound sample. In addition, the diameter of the control disc is very often clearly lower than that of a 30 centimeter microgroove disc.
When the disc rotation is motorized as it is indicated in the above-mentioned patents, the user must forcefully modify the rotary motion of the motor to ~~ P! P !. ! .F ~ O ~ EFI ~ E
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ability to change direction and speed of rotation disk. All these factors do not correspond to the benchmarks - kinesthetics of "DJ Hip-Hop", the sensations of lightness and "softness" at your fingertips going hand in hand with range of motion of the wrist, crucial criteria for regain the flexibility of particular handling and characteristic of "Scratch".
The present invention relates to two means of detections to be used together or separately depending on the needs.
It is, first of all, a means (other than those known to detect and translate the rotation of a control disc so as to control the reading of information) made up of a single element, easy to obtain on the market, economical, simple to implement, reliable and capable of time .
to ensure permanent detection, without discrepancy continuity, characteristics (speed, direction) of rotation of a rotating control member, - to guarantee a simultaneous translation of the said characteristics detected, in one signal allowing to pilot, with great precision, reading digital information.
These features provide a perfect match dance between the movement applied by the hand of the disc jockey on the rotating control member, like a disc, and controlling the reading of sound information digital, as it is sought by the "Hip-Hop DJs".
The present invention also provides specificity at the rotating control disc. Said disc is capable of activating or stopping one or more functions external organs, thanks to its sensitivity to touch. This particularity allows, in particular, to interrupt the feeding tion of the motor driving the rotation of the control disc, by simple contact made by the user on the surface of said disc. Breaking this contact immediately revives the automatic rotation of said disc. Furthermore, said touch disk and the mobile crew detecting its SHEET ME ~~ FIEE
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rotation are very light. Particularities cited above, allow not to oppose a - resistance, under the manipulator's finger, greater than that that "Hip-Hop DJs" know. This system ensures "Scratch" handling flexibility at least as great as the one known with a "vinyl record" on felt. Others organs and / or devices can be controlled by this tactile disc which enriches the flexibility of the steering, to give new possibilities of control and to broaden the scope of the invention. A few examples of control application using the touch disk rotary will be described later.
Thus, by using said module associated with said disk tactile, tactile and auditory sensations perceived during manipulation of the information management system digital sound, are faithful to those known to disc-jockeys. In practice, a model consisting of most of the elements described in Fig. 2, has been tested with disk-jockeys, without revealing the means used, tests which fully satisfied these "Scratch" fans.
The fundamental characteristic of said module rotation detection is that it's not digital like those used so far but that it's analog of dynamoelectric type. This feature allows audit detection module to act as an excitation dynamo constant capable of transforming the speed of rotation into DC voltage.
A detection module that uses a means of binary rotation recognition detects said rotation periodically, and therefore translates said rotation by a electrical pulse train. On the other hand, the module of detection characterizing the present invention, present the advantage of mechanically reproducing exactly all the rotary movements of the rotating organ to be detected and translate said movements simultaneously, not into a train of electrical pulses, but in a single voltage analog, specific to direct current. Therefore, thanks MODIFIED SHEET
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at 7 ~ ~ -. . r. iT i :: ~ vw vy to this dynamoelectric characteristic, the operations of detection and translation of rotary motion are not - more periodic and successive but are permanent and simultaneous. Variations in the speed of rotation of the rotor of the dynamoelectric detection module, caused by synchronously by variations in the speed of rotation of the control disc, are transformed simultaneously and without discontinuity, in proportional modulations of the potential of the DC voltage exiting said detection module, voltage which varies instantly and proportionally the reading speed of said device of reading information after having been or not converted into frequency depending on the information reading device to pilot. As for the change of direction of rotation of the rotor dynamo caused by the change of direction (nominal or reverse) from the rotation of the control disc it is simultaneously transformed into a reverse polarity (positive or negative) of the DC voltage leaving said dynamo, tension which, converted or not into a binary signal according to the information reading device to control, instantly changes the reading direction of said information reading device. Thanks to this module detection of rotary motion with properties dynamoelectric, all speed information and direction characterizing the rotation of the rotating control plate is taken into account, unlike the modules used so far for this detection operation, which generate a frequency, corresponding to the speed of rotation, insufficient to ensure piloting with the excellent correspondence required by the "Scratch" between, the movement applied to said rotating control disc, and, reading the information. Indeed, said dynamoelectric properties, meanwhile, allow impeccable monitoring of speed and direction characteristics rotation in the form of permanent electric voltage, voltage dedicated to indicating, very precisely, the said characteristics of the control disc in order to drive, in particular, a device for reading digital information. By its SHEET t ~ ODIFIEf Printed: l 2-12-2000 11-05-2000 Dr-rrc ~ ooin ~~ o3 "r ~" DESGPAMD
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originality, the dynamoelectric detection module presents the advantage of being able to adapt to the steering of any what digital information, whatever the nominal bit rate required for its nominal reading, since the potential of the '5 nominal voltage which it delivers to its terminals, corresponding in proportion to the nominal speed of rotation of the control disc, can be converted to frequency necessary to comply with said nominal reading rate of said digital information, as high as said debit. For example, the speed required to read at its nominal speed a sound sample whose frequency sampling was set at 44.1 kHz, through the rotation of a disc rotating at 33 rpm (or a turn in 1.82 seconds), is 44 100 X 1.82, i.e. 80 182 information per turn. At present, there is no binary coding detection module capable of debiting 80,182 information per revolution. In addition, such a module would probably very expensive. The detection module dynamoelectric, very inexpensive, described herein invention, is capable of it, and can even, on its own, adapt to any other flow. I just have to do match, by a simple selector for example, the potential of the voltage recovered at the output of said module with the sampling frequency corresponding to each type of information to control. So the detection module dynamoelectric can precisely control the speed and the direction of reading digital information, according to variations in rotary motion (speed and direction) applied to said disc, even if the frequency sampling used is of the order of Gigahertz.
The fundamental concepts of the detection module rotation and control of information to properties dynamoelectric having just been described, said module will cited below under the name of "dynamo" in order to facilitate the reading of the detailed description which follows.
In addition, the other judicious characteristic of the invention which makes the rotating control unit uii rotary touch disk, widens the possibilities of Printed: i 2-12-2000 MODIFIED SHEET
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piloting of the system beyond those allowed by the detection and translation of said rotary movement disc provided by the dynamo. Indeed, said touch disk acts as a capable switch, under the action of the finger, 'S to control the operation of any organ electric, electromechanical or electronic. The simple contact with said disc makes it possible, in fact, to control the activation or deactivation of one or more several independent organs of said disc, the detection of touch with the advantage of being treated so as to act as a simple electrical control and / or as a control digital as needed. So the control disc turning generates, in contact with the user's hand on its upper surface, a direct electric current, whether or not converted to a binary signal, which controls the functioning of one or more organs) and / or device (s), said control disc restoring the initial functioning of the said organ (s) and / or devices) by interrupting the electrical current, converted or not in a binary signal, when the user breaks said contact. By way of nonlimiting example, it will be described below with reference to FIG. 2, an application of ~
said command caused by the contact or not of a finger on the touch disk, associated, on the one hand, with a selector frequency-clock with digital control which allows the alter-type of frequency generator which must control the clock of memory address counters and on the other hand to the supply of a motor driving the rotation of said device than.
The fundamental concepts of the invention having just been set out above in their most basic form, other details and features will become more apparent clearly on reading the following description giving by way of nonlimiting example, some embodiments.
Said description refers to the attached drawings on which .
Figure 1 is a block diagram of the device steering clearly showing the two elements.
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Figure 3 illustrates a more economical way to implement the reading control system information implementing the detection process, adapting to the turntable of a turntable professional disc like the one used by discs jockeys for the “Scratch”, while using the felt "Scratch" of the disc jockey and the arm of the turntable. The figure 3.a represents the plate as a whole with its arm equipped with dynamoelectric detection module and touch sensor, Figure 3.b being a magnification partial of Figure 3.a highlighting said arm team. Figure 3.c is a close-up side view of the dynamo attached to the turntable arm.
As illustrated in the drawing of Figure 1, the referenced device (D) as a whole allowing to implement the reading control process of information present on any medium having a nominal read rate and the type of one that consists of associate continuous reading with nominal flow and direction said information to automatic rotation at a speed constant and in a nominal sense of a control member turning manipulated by the user and independent of the reading device. This device (D) consists of a fixed plate (100) on which rotates by means of a drive module a rotating control member (200) whose direction and speed of rotation are detected by a detection module (300) whose output data allow control of the device for reading information according to the direction and the speed of rotation of said control member (200). According to a preferred mode but not MODIFIED SHEET
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limiting of illustrated embodiment particularly judicious for musical application, the control member (200) resumes the form of a long-lasting microgroove disc and reproduces with its plate (100) the general shape of a record player of microgroove type. This reproduction of the environment of a disc jockey is particularly advantageous in that it allows this last to get very familiar with this new equipment. According to another particularly characteristic advantageous of the invention, the detection module (300) of the rotational movement of said control member (200) by relative to the fixed plate (100), consists of a module rotating (301), associated with the rotating control member (200) by a transmission means, said rotations of the module turn (301) being converted into data usable for control the reading of data stored on a data.
According to the preferred but not limiting technological choice of the transmission means illustrated, a belt of synchronization (210) ensures the transmission of the movement of rotation of the disc (200) towards the axis of the rotating module (301) of the detection module (300). .
In order to be able to fully exploit the properties dynamoelectric of said detection module (300), it is recommended to use a set of transmission wheels of a great size ratio. The larger diameter wheel (220) being placed between the disk (200) and the module automatic rotation drive (130), the center of the three elements being the same axis of rotation. In this operating mode, it should be baptized said wheels (220; 230). pulleys. The pulley (220) fixed under the control disc (200) in rotation, drives in rotation synchronized, by means of said synchronization belt not elastic toothed (210), the toothed pulley (230) of diameter significantly smaller than that of said pulley (220), fixed by its center on the rotor-axis (301) of the dynamo (300). The greater the said size ratio, the greater the multiplication of the speed of rotation of said rotor (301) of the IiliODIFIED SHEET
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The detection module (300) operates like a generator including the rotor (301), driven in rotation through of said belt (210) by means of the rotation of the member control (200), forms an electrical voltage in the stator (302), said voltage recovered at the terminals (303) being can be used to control the reading of information. So if the rotating control member (200) is driven automatically at constant nominal speed and direction, then the rotor (301) of the dynamoelectric detection module (300), rotating synchronously with said control (200), forms in the stator (302) a voltage electric of constant potential and sign capable of control, at a constant speed and direction, the reading of information at its nominal speed. By the same token, if the automatic rotation of the control member (200) is interrupted by manual intervention by the user, then all the rotary movements applied to said control unit (200) by the hand of the user are retransmitted to the rotor (301) of the detection member dynamoelectric (300) which forms an electrical voltage in the stator (302) varying in proportion to the energy mechanics of said applied rotary movements. The more Printed: l 2-12-2000 MODIFIED SHEET
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the faster the rotor (301) rotates, the more said tension high and vice versa, the more the rotation of said rotor (301) is the slower, the lower the said voltage. The change of polarity of the voltage formed in the stator (302) translates the change of direction of rotation of the rotor (301). If the rotation disc (200) is stopped, then the axis of the rotating module or rotor (301) of the dynamoelectric detection module (300) is stopped simultaneously and no longer produces voltage in the stator (302). Said tension, according to its potential and its charge (positive or negative), instantly controls the flow and the direction of reading the digital information from a memory for example, like a reading device analog information.
To do this, it is preferable to polarize said voltage with a polarization module (310) in order to perfect the separation of positive and negative charges, and the filter with an active filter (320) so as to eliminate better any parasitic modulation created by the dynamo (300). Although said polarization is not essential, the quality of said dynamo (300) is essential so as to limit as much as possible the filtering which must be finely dosed so as not to cause time to perceptible reactions in piloting, the tiny variations caused nimbly by the disc manipulator must be accurately translated on the reading information.
Modulations of potential and change of polarity of the voltage recovered at the terminals (303) of the dynamo (300), translating the speed variations of rotation and changing the direction of rotation of the disc control (200) communicated to the rotor (301) of said dynamo (300), are used to power the engine (s) of a digital information reading device or analog, such as a digital optical disc player (CD, CD-ROM, DVD, etc.) or a cassette player (Mini-cassette, DAT, Videocassette, etc.), variations of speed and change of direction of rotation of said one or more motors) ensuring speed variations and change Printed: l2-12-2000 SHEET IIAODI ~ i ~~ 13 "il-05-2000;. ~ r ~ -ric ~ oo ~ n ~~ q3. ..: .. DESCPi4MD '""
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reading direction of the analog information medium or digital.
It is also possible to control the information from an information medium (such as a cassette or a disc compact digital audio), from said device control (D), without necessarily directly controlling the speed and direction of travel of the motorized mechanism of the corresponding plate. Indeed, it suffices to interpose a buffer memory between said plate (laser plate, by example) and the control device (D), memory which is then controlled from said voltage variations electric recovered at the terminals (303) of the dynamo (300) converted into digital data capable of driving, function of variations in disc rotation (200) translated by the dynamo (300), the address counters of the memory so that they read the information numerical in proportion to said variations. A way of application allowing to associate the control device (D) when reading digital information stored in a memory will be described with reference to FIG. 2.
Consequently, the control device (D) of the invention makes it possible to respond exactly to the needs of disk-jockeys by creating an interface authorizing the “Scratch” technique from digital audio discs with or without an intermediate memory.
As mentioned above, in order to broaden the possibilities of piloting the device (D) beyond those that allow motion detection and translation rotation of said disc (200) provided by the module detection (300), according to a particularly characteristic advantageous of the invention, the rotating control member (200) is a rotary disc sensitive to touch. Indeed, said touch disk (200) acts as a switch capable of to control the functioning of any organ electrical, electromechanical or electronic. According to a mode preferred non-limiting embodiment, the sensor constituting the control disc (200) is a double printed circuit face cut in a circular pattern on which two appear Printed: 12-12-2000 FFI ~~~, r -EN ~ DtFf ~~
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- The said tracks (200a: 200b) are distributed so homogeneous on the upper surface of said disc and spaced - 5 by the insulating part (200c) so that a finger can touch them together regardless of the point of contact on said surface. Said tracks (200a: 200b) are found on the lower surface of the disc (200) under form of two concentric circular tracks separated by the insulating space (200c). The connection between the tracks distinct (200a; 200b) located on the upper surface of the disc (200) and their corresponding tracks located on the lower surface of said disc (200) is provided by conductors, called rivets (not shown) which pass through the thickness of said disc (200). The said tracks (200a;
200b) found on said lower surface of the disc (200) are in permanent contact with two conductors (201a;
201b), placed under said disc (200) and fixed on a support insulation attached to the frame of the plate (100), leaving accessible the terminals (201) corresponding to each of said conductors (201a; 201b). According to an application suggestion not limiting, said conductors are thin blades flexible steel bends (0.15mm thick), located on the same radius starting from the axis of rotation of the disc (200) and spaced according to the distance between the two tracks circulars of the lower surface of said disc (200). The rounded part of each of said conductors, created by the bending, makes contact with said tracks (200a; 200b) concentric circulars located under said disc (200).
Said conductors (201a; 201b) are each supplied by an electric charge whose polarity distinguishes them. î ~ so, by said contact, the conductor (201a), positively charged, transmits said positive charge to the track (200a) present on the two surfaces of the disc (200). Likewise, the conductor (201b), negatively charged, transmits said negative charge on the runway (200b) present on both disc surfaces (200). Therefore, the finger of the user straddling the two tracks (200a;
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200b), becomes a conductor causing the current to flow electric latent from one track to another. So according to a mode . preferred non-limiting embodiment, the contact of the finger the user on the control member (200) is detected by the touch detector (202) which recovers said current electrical at the terminals (201) of the contacts (201a: 201b) and measures finger resistance using a comparator forming part of said detector (202). So the higher the manipulator placing fingers on the control disc (2D0), the lower the resistance and therefore the better the detection of the presence of his hand, by said detector touch (202).
To facilitate understanding of the description which follows, all of said elements 200a, 200b, 200c, 201a, 201b and 201, will be called "touch sensor".
The control device (D) described in Figure 1 is used in figure 2 to control the reading of a digital information while providing the sensations that know the disc jockeys by controlling the reading of analog information written on the microgroove discs by manipulating the rotation of said discs. For this, in this non-limiting mode of application, is presented a set of controls made possible thanks to the rotary control associated with the two detectors, specific to the present invention, namely the touch sensor and the dynamoelectric rotation detector.
Thus, appear in said FIG. 2, the use tion of the tactile properties of the rotating control disc (200) to control the operation of an electro-mechanical and that of a numerically controlled organ so enrich the flexibility of use of the piloting the reading of digital information.
First, the steering device (D), illustrated in figure 1, is in figure 2 provided with equipment which allows the application of the touch disk command to the functioning of the electromechanical organ which drives it in rotation. Indeed, according to a preferred but non-limiting mode embodiment, said sensor temporarily suspends Printed: 12-12-2000 MODIFIED SHEET ~ 6 11-05-2000 - n ~ T ~~ "~~ '~~~~ DESCPAM ~
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the supply of the drive means. To do this, the drive means consists of an electric motor (130) whose motor shaft directly rotates the control member (200) and whose power supply (110) depends on the detection made by the touch sensor covering the rotating control member. So according to the method of the invention, in operation without intervention of the user, the electric motor (130) is powered and therefore rotates the control member (200) with a movement detected by the detection module (300) which transmits information in usable electrical form to a converter (voltage / frequency) (400b) which controls reading digital information by sending a sampling frequency on any medium (500) like a sound sampler. When the control disc (200) is driven in a uniform rotational movement by said motor (130), the rotational movement identified by the detection module (300) sends information to converter (400) which controls the sampler (500) of so that continuous reading is performed at high speed nominal reading of the sample information.
In order to eliminate any mechanical resistance likely to constrain the flexibility of handling required the "scratch", the surface of the control member (200) turning is advantageously constituted by a sensor which, by detecting the user's contact, causes the declutching the control member (200) of its module drive, the detection module (300) identifying thus the direction and speed of the rotational movements caused by user manipulation. So, when the user touches the control disk (200), the automatic drive of the latter is suspended momentarily until contact is broken. If the user keeps his hand on the control disk (200) without print rotational movement to the latter, reading is interrupted since the detection module (300) does not detects more rotational movement. When the user imparts a rotational movement to said disc (200), said Printed: 12-12-2000 FE! (II_ ~ F (I ~ fi ~~ = ~~ F 1 ~
11-05-2000 ~~ T "~""""'""DESCPAïVID ~ == ~ a ~ aa ~ CA 02350649 2001-04-243 ~ a fana laaa aarv 1 wv aaâ. w ~ - ~ v asa ~ avvavsr avaav, s ~ a t ... rva aa ia.i iaa ia ~ aa. i aa aa detection module (300) detects direction and speed instant of rotation which transmits by means of the '' converter (400) exploitable control information for reading the sample, the reading being carried out at a variable speed less, greater than or equal to the nominal reading speed according to the case where the movement of rotation printed by the user's hand to said disk of control (200) has a variable speed less, greater than or equal to the speed of rotation nominal of the control member (200) constituted by the disk. Similarly, the direction of reading information present on said support (500) is determined by the direction of the rotation movement printed by the user audit control member (200). According to the chosen choice no limiting, the power supply (110) of the motor (130) is interrupted or not by means of a relay (120) controlled by the touch sensor (202).
In addition, a walking device is provided.
forced drive module (130) to slow down or to accelerate the speed of rotation of the latter without pause the power supply (110) of the module drive (130), characteristic for adding other possibilities to variations in reading of the sample, memory or information carrier.
This particularity of the device (D) makes it possible to maintain the automatic rotation of said rotating control member (200) during handling of the latter by the user and ensure flow and direction of reading of information corresponding to the braked rotation or not of said device control (D). The said forced-motion device is consisting of a simple switch (203) placed after the touch sensor (202) so as to interrupt the electrical control caused by the user's finger on the disc (200). Said switch (203) can as well be placed between the terminals (201) of the conductors (201a 201b) in contact with the lower surface of the disc (200) and fixed on the frame of the plate (100), in order to avoid an unnecessary stress on the touch detector (202).
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Before describing a mode of application of the command of the operation of a numerically controlled organ thanks to the properties of the control disc (200), it is necessary to describe in more detail the piloting process reading the digital information stored in said sampler (500) from the control device (D).
According to a preferred mode of operation, the detection (300), due to the rotation of its axis (301) driven by the rotation of the disc (200) and in association with the converter (400), ensures the output of information corresponding to the direction and the speed of rotation which allows you to control the reading direction and speed the information present in the sampler (500).
To do this, you must of course first store information in the memory (504) of said sampler (500). If the signal to be sampled is a musical signal analog, said signal is first processed ~ by the module analog / digital processing (502) which filters the frequencies above 20KHz and then converts them to a digital signal. The record / mode switch playback (510) is switched to recording mode so that allow sampling of the digitized musical signal. For carry out said sampling, the manual selector of clock frequency (520) allows the user to determine the sampling frequency from an oscillator (501) forming an adjustable frequency, or from the frequency-speed generated by the voltage / converter frequency (400b) which converts the recovered voltage to terminals (303) of the dynamo (300) reflecting the speed of rotation of the control disc (200). The value of the nominal frequency generated by said voltage / converter frequency (400b) is adjusted, depending on the quality of recording sought, at the nominal potential of the voltage coming out of the dynamo (300). As it has already been explained above, said potential is dependent on the nominal speed of rotation of the rotor (301) of said dynamo (300) driven by the automatic rotation of the . control (200) thanks to the pulley-belt mechanism of Printed: 12-12-2000 i 1-05-2000 ~ ~~ ~ é CA 02350649 2001-04-24 3. ~ .. ~ ~:. ~ 'DESCPAMD v ~~' S
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synchronization (220; 230: 210) described in Figure 1.
So, if said analog musical signal is converted to digital by the analog-digital processing module (502) according to a quantization of 16 Bits, for example, user can choose a sampling frequency nominal of 44.1 KHz, if it wishes to respect a quality recording equivalent to that of a signal stored on a Compact Digital Audio Disc (CD). In the case where the user switches said manual frequency selector-clock (520) in order to make the frequency depend sampling on rotation of the control disc (200), it can determine, using a potentiometer (not shown), the voltage / frequency ratio that must observe the voltage / frequency converter (400b). So, for example, if when the control disc (200) rotates at a constant nominal speed of 33 rpm, the dynamo (300) translates said speed of rotation into a current nominal voltage of 4.5 Volts, then the user, by adjusting said sampling frequency to 44.1 kHz, sets a voltage / frequency ratio of 44.1 KHz for 4.5 Volts.
The frequency generator, thus chosen from the manual frequency-clock selector (520), then controls the clock of the counters (503) which will organize the information the digitized musical signal in the memory (504). A
times the sample of said musical signal recorded in said memory (504), the user toggles the switch (510) in playback mode so as to complete recording to proceed, then, to reading the stored sample.
The sample is thus read, according to the position of the selector manual (520), or, thanks to the frequency generated by the oscillator (501), or, thanks to the frequency-speed, generated by the voltage / frequency converter as a function of the speed of rotation of the control disc (200), translated in tension by the dynamo (300) .. If the user chooses to toggle said selector (520) to control the sample reading speed from rotation of the control disc (200), then, keeping for the Printed: l 2-12-2000 MODtFtE SHEET ~ 0 ' 11-05-2000 CA 02350649-2001-04-24 3. ~. DESCPAMI ~ '~'' .... .._ .. ~ -. . '..
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reading, said report used in the example above cited for sampling, the read rate of said digital information is approximately 80,180 periods per revolution of the control disc (200). Regardless frequency generator-clock selected, frequency corresponding controls the counter clock (503) so to scan the addresses of the memory at the fixed speed (504). So that the user can hear said sample read, the digital information of said sample in memory are converted to analog information then filtered on frequencies above 20 KHz by the digital-analog processing module (505).
It is interesting to deepen the study of the means of non-limiting use, for piloting the sample reading from disc rotation (200) which according to one of the original features of the present invention is detected by a dynamo (300) with permanent excitation which translates said rotation into direct current. To convert the voltage recovered at the terminals (303) of said dynamo (300) in a signal capable of controlling the reading of information sampled, a converter should be used voltage / frequency (400b) capable of adapting to frequency of predefined sampling to control the reading of the information sampled at its nominal reading speed and allowing a frequency modulation range large enough to be able to follow the modulations of voltage corresponding to the speed variations imposed by the "Scratch" manipulation. Before entrusting said voltage to said voltage / frequency converter (400b), it is better to use an active filter (320) and a rectifier (330). Said filter (320) performs the filtering eliminating the fine parasitic modulation created by the dynamo (300). Said rectifier (330) performs a straightening ensuring always positive tension, in order to do not disturb said voltage / frequency converter (400b).
To control the reading direction of said information digital, knowing that the voltage at the module output Printed: 12-12-2000 SHEET MOtl ~ F "2 11-05-2000 ~ 02350649_ 2001-04 _24 3 ~ ~ ~ ~ ~~. . ~ ~ DESCPAMD '~
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dynamoelectric detection (300) is positive when the control disc (200) rotates clockwise of a watch, for example, and that said voltage is negative when said disc (200) rotates in the opposite direction, it '5 should be polarized, using the polarization (310), before shaping said voltage positive or negative in a square wave so as to obtain direction of rotation information in binary state. For it, according to a chosen non-limiting means, the implementation module shape (400a) notably uses an operational amplifier and a diode, in order to carry the values of the potentials of the terminals (303) of said dynamo (300) at potentials symmetrical with respect to zero (for example + 15V and -15V) and to polarize said symmetrical potentials in one direction blocked, thus preventing any current flow in the direction reverse, and limiting the positive voltage to a low fixed potential. Therefore, thanks to said implementation module form (400a), when the rotation of the rotor (301) of the dynamo (300) is done in reverse, the negative voltage recovered across- (303) of said dynamo (300) becomes zero, while that the positive tension, obtained from the rotation in direction normal, becomes 5V for example. So the change of meaning of the dynamo's rotor is translated into a alternating voltage or no voltage forming, at the reading of an oscilloscope, a square signal such as representation of the binary state of a digital signal (voltage = 1; absence of voltage = 0). From said signal thus obtained, it then becomes possible to control the sampler (500) counters (503), which count the addresses of the memory (504) if there is a voltage, or count down said addresses in the absence of voltage. This process allows to change the direction of information reading digital which is stored in said memory (504).
However, as noted above, if the rotor (301) of the dynamo (300) does not rotate, then none tension is formed in the stator (302). So when the counters (503) receive, from said shaping module (400a), an indication of meaning of OV, it means either that Printed: 12-12-2000 SHEET MODIF1122 11-05-2000 CA 02350649_ 2001.-04-24 3; ~ "~~ _. , ~ ~ DESCPiANïID ~~ '' :. ,,. .. ..:. . .
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the rotor (301) of the dynamo (300) rotates in the opposite direction, either it doesn't spin at all. Anyway, at _ from said indication, said counters (503) are preparing to count down the addresses of the memory (504). AT
_ 5 from there, the counting of said addresses is done or not, according to the speed information communicated by the converter voltage / frequency (400b), which tells the meters if said rotor (301) of the dynamo (300) rotates in the opposite direction by generating a frequency, or, if said rotor (301) does not rotate not at all, said voltage / frequency converter (400b) generating no frequency. Ultimately, to pilot the speed and direction of reading information present in a buffer memory or in the memory (504) of a sampler (500), the traditional way is to generate a frequency to control the speed of the clock of the or counters) of memory addresses and to produce a signal binary for said counters to count or count down said addresses; the present invention is original by the fact that said frequency is formed by a converter voltage / frequency (400b), the modulation of said frequency dependent on the variation of the voltage potential recovered at the terminals (303) of said dynamo (300), after said voltage has been processed by a polarization module (310) distinctly separating the positive charges and negative, by an active filter (320) eliminating fines parasitic modulations of said voltage and by a rectifier (330) maintaining said voltage in a constant direction and that said binary signal is formed by a shaping module (400a) which processes the values of the voltage potentials recovered at the terminals (303) of the dynamo (300) and the converts into a binary mode signal function of the change in polarity (positive or negative) of said voltage previously polarized by said module polarization (310).
In addition, the user can also alternate the frequency which the clock of the counters must control (503) depending on whether it touches the control disk (200) or not. In indeed it has been previously described that simple contact and Printed: 12-12-2000 MODtFl SHEET, 23 11-05-2000 CA 02350649 2001-04-24 3,.: _; ::,, DESCPAMD ~ ' _ ''. 24 '_ ~; :::: '', JL 1 i 1.
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breaking contact with the sensor of said disc (200) are, in the present invention, indications detected by the touch detector (202) and make it possible to control the activation and / or deactivation of one or several independent organs of said disc. Said detection touch has the advantage of being treated in such a way as to act a simple electrical control and such a control digital, both or individually as needed.
Thus, according to a non-limiting mode of application, by the whether or not to touch the touch disk (200), it is possible to order a numerically controlled selector (515) so that it toggle, of the frequency "speed" given by the voltage / frequency converter (400b) which provides frequency varying with dynamo voltage (300) proportional to the speed of rotation of the disc (200), the constant "automatic" frequency set by the oscillator (501). Therefore, when the user touches the disc of control (200), the numerically controlled selector (515), selects said frequency "speed" which allows to control reading the information stored in the memory (504), according to the movements exerted on the disc (200). When the user interrupts the contact with the disc of control (200), then the numerically controlled selector (515) selects said "automatic" frequency set by the oscillator (501) and allows the reading of said information stored in said memory (504) at a speed constant. This function allows, in particular, to restart instantly at nominal speed, thanks to said "automatic" frequency, reading information digital after a "scratch" period, in order to obviate the slight perceptible mechanical reaction time when restarting the disc at its nominal rotation speed translated by said.
frequency “speed” during handling “Scratch” _ Quellè
that the clock frequency selected by said digital selector (515), user keeps always the possibility to change the reading direction of said digital information stored, changing the meaning of rotation of the control disc (200). This function MODIFIED SHEET
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original control of the address counters clock memory (503) according to the selection of said control selector digital (515) controlled according to the contact or not of the finger on the control disk (200), can be called by _ 5 the user by switching said manual selector (520).
Said manual selector (520) has a third position which allows the frequency alternation to pass through "Automatic" and frequency "speed" from said numerically controlled selector (515) which switches according to the binary order it receives from the formatting module of touch information in binary signal (204). Indeed, said formatting module (204) transforms the indication of the touch detector (202) in binary signal (disc hit = 1; disc not touched = 0). In order to widen the field possibilities of information faking, said function for alternating the clock frequency generator can be used while recording the musical signal to sample, this function allowing you to modify the sampling frequency. So, by reading the sample at.
from a constant frequency, the information is read with ' the speed variations caused by the modulation of frequencies created by user manipulation on the touch control disk (200). Indeed, if the speed of the sampling frequency has been temporarily reduced during recording, then, when playing the sample at a constant frequency, said reduction momentary the sampling speed is translated by an inversely proportional acceleration of the speed of reading. On the contrary, if the speed of the frequency has been momentarily accelerated during recording, then when reading the sample at a constant frequency, said momentary acceleration of the sampling speed is translated into a reduction inversely proportional to the reading speed.
In the nonlimiting application mode which comes to be described with reference to FIG. 2, the properties of the control disc (200) control both electromechanical operation of the drive module Printed: ~ 2-12-2000 SHEET Mp ~ p 25 1 i-05-2000 CA 02350649- 2ooi = 04_243 ~. ~ - ~~ w. DESGPAMD T
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in rotation of said disc (200) with or without cutting the motor supply (130), and the selector frequency-clock (515) with digital control which selects the frequency generator which must control the clock of memory address counters (503).
Due to the simplicity of the device to be implemented place, it is perfectly possible to adapt a plate classic microgroove type disc playback for make a control device (D) in accordance with the invention.
Indeed, Figure 3 illustrates an application mode nonlimiting allowing disc jockeys to keep their record player as rotation drive module capable of accommodating said control device (D). Said application method is simpler and more economical in the since it allows to dispense with a turntable specially equipped with a pulley mechanism timing belts. So the piloting (D) comprising the sensitive control disc (200) to the touch, associated with the dynamoelectric detection module (300) rotation, fits on a turntable (105) of the type used by disc jockeys in using the rotation training module, the motorized turntable (135) of said plate (105). This mode of application as a whole also allows to equip said turntable of said device (D) adapted to removably, so as to rediscover known sensations "Scratch" manipulation on a microgroove disc during manipulation of the control disc to "scratch" a digital sound sample. The disc jockey can thus practice "Scratch" on information from a medium other than the traditional microgroove disc, without lose the tactile sensations he knows with said traditional medium. This mode of application provides more to the followers of the technique "Scratch", the advantage of ability to keep their felt specially adapted for said technique and the turntable arm as a tonearm for play a digital audio sample, for example.
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To do this, the control disc (200) is directly placed on the "Scratch" felt (141), said felt (141) being placed between said disc (200) and the motorized turntable (135). As with a disc microgroove, the felt (141) keeps a permanent contact.
with the control disc (200). She slides on the board turning (135) during sharp changes of direction, sudden acceleration and braking of the rotation, characteristics of the "Scratch" exercised by the "DJ Hip-Hop" on said disc, without disturbing the nominal speed of rotation of said motorized turntable (135). She hangs audit plateau (135) after the "Scratch" period which allows restart the disc (200) at its nominal rotation speed instantly.
The dynamoelectric detection module (300) and the touch sensor (not captioned in this figure) are housed under the cell holder (185) of the arm (180) of the plate (105), the wheel (230) fixed to the rotor (301) of said module detection (300) and the conductors (201a; 201b not referenced in this figure) specific to the touch sensor being in contact with the upper surface of the control disc (200). The rotation of the disc (200) causes the rotation proportional to the small diameter wheel (230), by the contact of the edge of said disc (200) with the periphery of said wheel (230). Electrical information respective corresponding to motion detection of said disk (200) by the detection module dynamoelectric (300) and on detecting the contact of the hand of the manipulator on the control disc (200), recovered at the terminals of said cell holder (185), are used from the two “cinch” cards (304; 305) original coming out of the arm (180) of the plate (105). The sheet (304) retrieves the 1st electrical signal from the detection module dynamoelectric (300) fixed and connected to the cell holder (185), while the file (305) retrieves the information electric corresponding to the detection of the presence or not with your hand on the control disk (200).
MODIFIED SHEET 27 ;:
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The touch and movement detection process rotary action exerted by hand on the control disc - (200) very discreetly equips the tonearm (180) of the platinum (105). the dynamo (300) and the touch sensor (not - 5 shown in this figure) adapt to the cell holder (185), via a suitable support (175), in place of the cell used to read the microgroove discs. The periphery of the small diameter wheel (230) fixed by its center on the rotor (301) of the dynamo (300) is covered with a bandage (240) in direct contact with the edge of the control disc (200). This bandage is made of a material avoiding skids and wheel slippage (230), such as rubber for example, without slowing down the rotation of the disk (200) around the axis of rotation (160). So the automatic or manual rotation of the disc (200) causes, by its contact with the tire (240), the rotation proportional to the wheel (230) and therefore to the rotor (301) of the dynamo (300). The direct current formed by the rotation of the rotor (301) in the stator (302) is recovered at the terminals (not captioned in this figure) of the dynamo (300) by two of the four electrical wires from the cell holder (185) provided at the origin to recover the signal from one of the two channels leaving the reading cell. The electrical signal from dynamo (300) found on the plug (304) called "Cinch" or "RCA", leaving the plate (105), is exploitable as described above, in particular with regard to Figures 1 and 2, to control the reading of information.
In order not to load the drawing, the elements previously identified by the legends 200a, 200b, 201a, . 30 201b in Figures 1 and 2, partially constituting the touch sensor, are not captioned in this figure however, the description which follows reproduces said legends in order to facilitate understanding. The other “cinch” card or "RCA" (305) is used to implement touch detection on the disc (200). The two electric wires correspondents, found at the cell holder, serve to receive the two conductors (201a; 201b) in contact direct and permanent with the tracks (200a; 200b) located in SHEET Ii ~ ODIF ~~~
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border of the upper surface of the disc (200). The contact of the hand of the disc jockey on the control disc (200) can thus be used to control the operation external organs and / or devices, as described previously with reference, in particular, to FIG. 2. In this case, said circular tracks (200a; 200b) concentric centered on the axis of rotation (160), are placed on the upper edge of the disc (200) and are in permanent contact with said conductors (201a; 201b) fixed on the support (175) adapted to the door cell (185) located at the end of the tonearm (180).
In order to avoid lateral excursions of the tonearm (180), caused by the force which tends to move the wheel away (230) of the axis of rotation (160) when the disc (200) rotates in clockwise, and by the force that makes converge said wheel (230) towards the axis of rotation (160) when said disc (200) rotates in the opposite direction, a stabilizer (190.) prevents scanning of said arm (180), so that the wheel (230) can roll forward or backward on the edge of the disc (200), without changing path. Similarly, thanks to said stabilizer (190), the drivers (201a; 201b) do not leave their respective track (200a; 200b).
Thanks to the adaptation of device D on a turntable so-called “professional” disc, the disc jockey retains its platinum for its primary purpose, but also to drive digital information reading devices such as a sound sampler, laser stage or any other music playback device. So, by simply having changing its turntable by adapting the detection device according to the invention, the disc-jockey is dedicated to “Scratching” from a digital information, in particular from an optical disc digital audio (CD, CD ROM, DVD audio, etc.) in rediscovering its automatisms and its sensory landmarks. Said adaptation is removable, the practice of "scratching" can leisure from traditional manipulation from a microgroove disc or from handling the disc Printed: l 2-12-2000 SHEET ~, ~~ QâIE ~ 2g CA 02350649 2001-04-24 DE SCPAMfl ~~~ F
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control capable by detection of touch and movement rotary applied by the disc jockey to pilot a any reading device such as a laser stage so "Scratch" using information from the C. D
read by said deck.
The forms of application of the piloting device reading digital information from elements features of the invention such as the rotating disc sensitive to touch associated with the dynamoelectric module of detection of the rotation of said disk which have just been represented and described, are to be taken into account under disclosure rather than limitation. Of course, various adjustments, modifications and improvements may be brought to the examples cited above, without depart from the scope of the invention taken in its aspects and in his broadest mind.
So, according to one of the characteristics that conditioned the choice of a dynamo with constant excitation as module of detection, lies in the fact that when it is supplied with current by a generator, said module acts both and at the same time as detector and as drive module the rotation of the control disc. In this mode of embodiment, not illustrated, an electrical voltage must be applied to the terminals of the dynamo using a generator specific, so that it behaves like a motor electric direct current. It will then be necessary to compensate the error linked to the passage of current in the resistance of wires from the dynamo windings to deduce the speed and direction of rotation of the control disc. The generator specific must have a voltage-current characteristic allowing a perfect imitation of a disc on felt (imitation of the friction of the felt on the plate).
Said generator equipped with a current limitation symmetrical, must be able to function as a generator or receiver. You may need to add something to resistive behavior (positive or negative) to perfect the behavior of the whole.
Printed: l 2-12-2000 SHEET I ~~ nI ~~ F ~ 30 09- ~ -1-2000 CA 02350649 2001-04-24 FR 009902393 In case the control disc (200) requires a , 'diameter comparable to that of a microgroove disc of 12 inches (30.48 centimeters), it is recommended to keep a embodiment of the device (D) of the type which appears in figure lb, replacing the motor (130) directly driving the rotation of said disc (200), by an axis of rotation of the type used for the plates belt drive turntable, the drive module detection (300) which can also act as a motor direct current driving through the pulley mechanism -belt (230; 220; 210) said disc (200). In the case where, for the sake of miniaturization, the control disc (200) is reduced significantly, for example to a diameter of 3.5 inches (8.89 centimeters), said disc (200) can be directly fixed by its center to the rotor-axis (301) of the module detection (300), said module (300) being capable of both to detect and directly cause the rotation of said disc (200) in order to control, by said rotation, the reading information from any device. So the reduction in the size of the device (D) therefore allows its discreet integration into the heart of reading devices audio information, such as video or multimedia.
Furthermore, still without going beyond the ambit of the invention, other means can provide the synchronization between the movements of the control member rotating and axis of the module rotating the detection module dynamoelectric. Indeed, by retaining the same properties basic tees of the wheels described above and by fitting their tooth peripheries, the timing belt can then be replaced by a gear principle. wheel larger diameter tooth placed under the disc control, and driven by automatic rotation ensured by a motor for example, meshes the gear wheel with small diameter fixed on the dynamo rotor, to transmit said module detects its rotation characteristics.
Therefore, during user intervention for a "Scratch" type manipulation on the control disk secured to said large diameter gear wheel, all MODIFIED SHEET
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variations in speed and direction of rotation of said wheel are instantly transmitted by gear to the small wheel which is one with the dynamo rotor. The use of wheels, like that described with reference to FIG. 3, provided latex or rubber bandages or coverings artificial or any other material ensuring a slightly pressed contact between the two wheels so as to synchronize the rotation of said wheels avoiding skating during acceleration, braking or sudden changes in direction is another way appropriate transmission of information concerning 1a rotation of the control disc on the dynamo rotor.
Of course, whatever the mode of transmission synchronous with the chosen rotation, the characteristics of the electrical voltage coming out of the dynamo's terminals, proportional to the characteristics of the rotor rotation synchronized with the rotation of the disc, are operated, directly or not, to control the reading of information tion.
Finally, concerning the means of detecting touch not limitation described, the use of other types of sensors can be considered, without going beyond the ambit of the invention, the dominant originality of this process being whether or not to touch the control disc as means of controlling the functioning of various organs so improve steering flexibility and broaden possibilities of controls. Said means illustrated, in particular in look at Figure l, is simple to implement and allows to have a light, resistant and reliable touch disk in the touch detection.
Regarding latent industrial application, it is quite possible to carry out a production closely inspired by the steering system which highlights implements the contact and movement detection process rotary exercised by the user's hand to control reading information. This device is particularly advantageous in that it allows the use of the technique of "Scratch" from any information medium, Printed: 12-12-2000 32 11-05-2000 CA 02350649 2001 = 04 _24 3 ~~, ~~~, ~ ~ ~,: DESCPAMD ç °
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of course digital but also analog that said information either audio, video, computer, etc ...
or corresponding to the association of different types.
Thus, said device can very well be coupled or - 5 be integrated into devices intended for video postproduction and cinematographic, in order to facilitate the management of the reading of digital information corresponding to images and / or high definition polyphonic sounds to analyze in detail and to be assembled with precision. Indeed, flexibility of manipulation provided by the present invention corresponding to the logical evolution of the mounting devices used until the mid-80s in this area, should be successful in this environment, and therefore generate latent industrial adaptation. It is likely that the integration of the present invention into the environment of video is made quickly, driven by latent demand from "Video-Jockeys" called "V.J's". In the immediate future, the applica-industrialization of the most obvious invention should to be carried out to exactly meet the expectations of the disc-jockeys, more particularly "Hip-Hop" and naturally disk-jockeys called "House" and "Techno", then democratize in discos and among young people "Scratch" enthusiasts from 15 to 25 years old more and more numerous in the World. The industrial application which should be developed first, will build very certainly on the mechanism presented and described from Figure 3. Inevitably, an industrial application should integrate the present invention in the field of "Multimedia", in order to provide flexibility of handling unknown until now in this sector open to all audience, ease of use and usability making parts of the major advantages brought by the invention, said assets being highly sought after in this area.
F ~ USE MODlFlEE
Printed: l 2-12-2000 33