FR3002343A1 - Device for evaluating if e.g. car radio, in e.g. motor vehicle, comprises malfunction to produce spatio-temporal broadcast signal from e.g. compact disk, has recognition module comparing signal measurement to pattern to announce malfunction - Google Patents

Abstract

The device (1) has a control module (11) for controlling a selection unit (48) to indicate a source from psychosensory data sources (41-45). A correspondence table (12) is addressable by the module, where the table contains a pattern associated with the source and transmissible from the source. A measurement module (13) measures a spatio-temporal broadcast signal produced by an electronic system (40) to generate a signal measurement. A recognition module (14) compares the measurement to the pattern so as to announce malfunction in absence of recognition of the pattern in the measurement. Independent claims are also included for the following: (1) a method for evaluating if an electronic system comprises a malfunction to produce a spatio-temporal broadcast signal (2) a computer program comprising program code instructions to execute a method for evaluating if an electronic system comprises a malfunction to produce a spatio-temporal broadcast signal.

Description

Disposal and .procedure for detecting a failure of electronic system operation. The invention relates to the validation of electronic systems that are required to operate in relation to numerous devices and numerous applications constituting a plurality of sources to be managed. This is particularly the case of multimedia systems such as car radios intended to be mounted on a motor vehicle, vehicle users are numerous and can implement a wide variety of devices and applications available to them to communicate or for to distract yourself. Many multimedia systems, including those outside the automotive domain, make it possible to switch from one source of content to another. In order to ensure that the joy of such an electronic system does not become a disappointment when the electronic system is expected to reproduce the contents of an appropriate source, it must be ensured that the electronic system is compatible. with the largest possible source of resources, hardware or software, available on the market. To illustrate the prior art, document US5361305 discloses, for example, a device and a method for testing a good reproduction by an audio system of a signal received from a single SOLII-Ce consisting of a reception antenna. radio. However, the device and method of the prior art does not allow for an electronic system equipped with multiple sources.

In order to remedy the problems of the prior art, the subject of the invention is a device for evaluating whether an electronic system comprising means for selecting one of several sources of psychosensory data and means of transmission. of psychosensory data in the form of a spatiotemporal diffusion signal, includes a malfunction for producing an expected spatioternporelle diffusion signal from an indicated selectable source. The device is remarkable in particular that it comprises: a control module of the selection means for indicating the selectable source; a look-up table that can be addressed by the control module and that contains at least one pattern that is associated with the selectable source and that is transmissible from said selectable source; a modulus of spatiotemporal diffusion signal measurement produced by the electronic system generating a signal measurement; and a recognition module which compares the signal measurement with the associated pattern so as to announce a malfunction in the absence of recognition of the associated pattern in said signal measurement. In particular, the pattern comprises a predetermined frequency signal. Advantageously, the modulo generates the signal measurement by performing a Fourier transform of the spatiotemporal diffusion signal. An implementation in which the pattern comprises a humanly imperceptible signal has certain advantages. An implementation in which the pattern includes a humanly perceivable signal has other advantages.

The invention also provides a method for judging whether an electronic system correctly selects one of a plurality of psychosensory data sources to produce an expected spatio-temporal broadcast signal from an indicated selectable source. Remarkably, the method includes steps including: - controlling the electronic system to indicate the selectable source; associating a pattern with the indicated selectable source and including the pattern in the selectable source; measuring the spatiotemporello scattering signal produced by the electronic system so as to generate a signal measurement; e - comparing the signal measurement with the associated pattern so as to announce a malfunction in the absence of recognition of the associated pattern in the signal measurement. Advantageously, the pattern comprises a predetermined frequency signal so as to generate a signal measurement by performing a Fourier transform of the spatiotemporick diffusion signal. According to different embodiments of the method the pattern comprises a humanly imperceptible signal and / or a humanly perceptible signal. Another object of the invention is to provide a program comprising program code instructions for executing the steps of the method according to the invention when the program is executed on a computer. Finally, a subject of the invention is an evaluation report of an electronic system which comprises technical data produced by implementing a method according to the invention. The invention will be better understood with the aid of FIG. Embodiments of a device according to the invention with reference to the accompanying drawings, in which: Figure 1 is a schematic view of a device according to the invention; Figure 2 shows a detail of the device of Figure 1; Figure 3 shows process steps in accordance with the invention. FIG. 1 shows an electronic system 40 comprising means 48 for selecting one of several sources 41, 42, 43, 44, 45 of psychosensory data for producing a spatiotempore diffusion signal, from a selectable source indicated . The electronic system 40 is typically a multimedia device as can be found in a dwelling or in a vehicle, especially in a motor vehicle.

For purely illustrative and non-exhaustive purposes, the source 41 is, for example, a type A key LiSE3 containing psychosensory data which describes sounds relating to music, voice or the like. The source 42 is, for example, a first type B USD key track containing psychosensory data that describes sounds relating to a piece of music, to a text that speaks or sings. The source 43 is, for example, a second type-B USB key track containing psychosensory data which discovers sounds relating to another piece of music and / or to another spoken or sung text.

The source 44 is for example a compact disc (CI) for Compact Disc on English) containing psychosis data, multimedia type of neds which describe sounds accompanied or not images and / or texts. The source 45 is for example, but not necessarily a radio station frequency band that transmits psychosensory sound type data accompanied or not by texts on the FM (Frequency Modulation) bands among several possible frequencies in a frequency range of 87, 5 MHz to 108 Ml Z in some parts of the world or 76 MHz to 90 MHz in other parts of the world.

The source 45 is for example still a radio station frequency band which transmits psychosensory data of the sound type on the AM (Amplitude Amplitude) bands among several possible frequencies in frequency ranges from 150 kHz to 280 kHZ, of 520 kHz at 1620 kHz and from 2300 kHz to 20100 kHz in some parts of the world or from 540 kHz to 1610 kHz in other parts of the world. It will be understood that the possible sources are not limited to the examples given above. One can also mention a transmission channel of the IEEE 802.15 protocol range for connecting a mobile phone or cooking communicating device.

Various types of selection means 48 may coexist or cooperate in the electronic system 40. The selection means 48 may be in the form of a hardware switch as symbolically represented in FIG.

Generally in modern multimedia devices for vehicles such as car radios, navigation stations or on-board connected tablets, the selector means 48 are made in a conventional form. An input-output pilot program addresses, in a manner known per se, one of the inputs on an internal bus as a function of requests issued by application programs or interrupts emitted by the operating system (OS for Operating System in English). In a manner known per se, k) pilot program is normally arranged to transfer content from the addressed input to psychosensory data transmission means 49 in the form of a spatiotemporal broadcast signal. The transmitting means 49 may comprise one or more loudspeakers for transmitting auditory-type psychosensory data in the form of a sonar wave diffused in space in a variable manner over time. The transmission means 49 may comprise one or more display screens for transmitting psychosensory data of visual typo in the form of an image whose light is diffused in space in a fixed or evolutive manner over time. The interrupts emitted by the operating system may come from control buttons operable on the front of the electronic system by a human user. The interrupts emitted by the operating system may also come from a touch screen management application detecting a finger position of the human user. Without listing all the possible sources of the interrupts, it is also possible to mention those which come from an insertion of an information medium in a CD reader, in a memory card reader or in a USB socket. A possible application program transmitting requests to the destination of the pilot program, for example is a GPS (Global Pesitioning System) navigation program. The navigation program may momentarily interrupt an audition during a music or radio broadcast to indicate a direction to be taken, a stopper or excessive speed. A possible application program transmitting requests to the pilot program, for example is also a mobile phone program. The mobile phone program may momentarily interrupt an audition during music or radio broadcast to signal or make a call. An application program issuing queries for the pilot program could, for illustrative purposes, still be an onboard self-diagnostic program. On-board self-diagnostic program could momentarily interrupt any other multimedia program is running to report for example a level too low fuel tank or a door poorly closed. It is understood that the interrupts and requests of the type of those described above, cause automatic source selections which should be verified that they comply with pre-established specifications of the electronic system 40. For illustrative and non-exhaustive purposes only , a condition of good operation of the electronic system 40 is based on a need to hand over to the interrupted source after completion of the task executed on interruption or on request, by the operating system or by each of the application programs. For example, a radio station interrupted by a navigation indication must be correctly restored after the indication is issued. Another condition of good operation of the electronic system 40 may be based on a need to give the hand to the various sources in the presence of a priority order when several tasks to be executed on interruption or on request, appear simultaneously or afterwards some others in a relatively short period of time, that is to say generally less than that of the execution of another task to be executed on interruption or on request.

Another condition of good operation of the electronic system 40 may also be based on a need for good sound or visual reproduction of the content of each of the selectable sources. Given the number of selectable sources, application programs and combinations that result in a current multimedia electronic system, the need arises for a device that allows the most automatic evaluation possible if the electronic system comprises a malfunction. The need is further magnified in view of the diversity of current multimedia electronic systems when one wants to check them in order to compare performance. The device 1 shown in FIG. 1 comprises, in particular, a module 11 for controlling the selection means 48, a matching correspondence table 12, by the control module 11, a spatiotemporal diffusion signal measuring module 13 and a module 14. to recognize if one or more malfunctions exist in the verified electronic system 40. The control module 11 of the selection means 48 indicates a selectable source or a sequence of selectable sources for verifying the proper operation of the electronic system 40. To control the selection means 48 by simulating user actions on an interface which If there are interruptions of the operating system, the module 11 may comprise robotic elements for actuating the buttons of the electronic system 40 if there is or touching zcmes of a touch screen connected to the electronic system 40 if in 25 exists. To control the selection means 48 by simulating user actions similar to those of the preceding or different paragraph, the module 11 may include a relay mechanism that reproduces a contacting of hardware components. The relay mechanism can be resumed by: for example, the one described in patent application FR120501 for physically simulating a USB plug insertion in an associated socket. To control the selection means 48 by simulating events that trigger requests generated by one or more application programs, the bridge module 11 comprises an emulator program that communicates with the OR application programs or that defeats certain features of one or more programs. application. For example, a system developed under a given operating system, for example Android, can be controlled by a suitable software tool, for example respectively Al B (acronym for Android Debug Bridge). The correspondence table 12 is addressable by the module 11 on a line which corresponds to the source it indicates to control the selection means 48. Each line, for example, of the table 12 contains at least one pattern that is associated with the indicated selectable source and is transferable from the indicated selectable source. FIG. 2 shows a possible example of a table 12 indexed in column 20 by a source reference to which corresponds in column 6 a pattern. When the sources are of the audio type, the patterns are also of the audio type. In the example illustrated in FIG. 2, the patterns are signals with different constant frequencies. Thus each constant frequency is distinctive from the source to which it is assigned. Thus, a frequency of 1 kHz corresponds for example to a source reference listed USB type A audio. A frequency of 2 kf lz. for example, corresponds to a source reference listed first type-B USB key track. For example, a frequency of 3 kHz corresponds to a reference of source listed second USI3 type B key track. A frequency of 4 kHz corresponds, for example, to a reference source 25 listed compact disc read-only. A frequency of 5 kHz corresponds, for example, to a source reference listed compact disk for reading and writing. A frequency of 6 kHz corresponds, for example, to a source reference listed first audio track of secure memory card (SD for Secure Digital in English). For example, a frequency of 730 kHz corresponds to a source reference listed as the second SD card audio track. A frequency of 8 kHz corresponds for example to a source reference listed band AM (Amplitude Modulation) 162 kHz radio frequency. A frequency of 9 kHz corresponds, for example, to a source reference listed on the FM band. Modulation of radio frequency frequency 100.5 MlL. For example, a frequency of 10 kHz corresponds to a source reference determined by the FM band (Frequency Modulation). of radio frequency 98.4 Ml L.

The motif can be encoded, in the format of the source to which it is associated, in the form of a humanly imperceptible sign. For a pattern coded in an audio format such as one of those described above, it is recalled that the auditory acuity is generally in a frequency range varying from 20 Hz to 20 kHz. For example, it is possible to obtain inaudible patterns by using signals at frequencies below 10 Hz or above 25 kHz. Inaudible patterns can also be obtained in a frequency range of 20 Hz to 20 kHz by encoding the signal at a sound intensity that can be reduced in decibels, which gives rise to a sound perception below the audibility threshold at the frequency in question. As we will see later, a low sound intensity does not affect the use of the device. The advantage of an inaudible pattern is that of not disturbing the sound environment, especially when it is a fixed frequency signal that could present the risk of unpleasant human perception.

The pattern can be encoded, in the format of the source with which it is associated, in the form of a humanly perceptible signal. The constant frequency signal is preferably but not necessarily replaced by the one reproducing a piece of music or a song so as to provide a more pleasant human perception. The constant frequency signal could also be replaced by that reproducing an oral statement of characteristics of the source associated with the pattern. The signal is then encoded in the format of the associated source, at a level of sound intensity which gives rise to a sound perception above the audibility threshold in the frequency spectrum considered. The advantage of an audible motif is that of allowing a human perception to recognize the source. We can also consider associating two motifs with each source, a simple humanly imperceptible motif to facilitate the automatic digital processing and a more elaborate humanly perceptible pattern to allow a human operator to intervene in source recognition. ..Invention is not limited to audio sources. As a purely illustrative and non-exhaustive example, [Invention is also applicable to visual sources. A visual pattern is then associated with the source as shown on line 19 of table 12 with reference to FIG. 2. Here again, the pattern may be encoded, in the format of the source with which it is associated, in the form of humanly imperceptible signal. For a pattern coded in a visual format, such as that of a rearview camera in a motor vehicle, it is possible to use, for example, a watermark or steganogmphie digital watermark in English) of parallel lines regularly spaced or otherwise. Here too, the pattern may be CCX.40, in the format of the source to which U is associated, in the form of a humanly perceptible signal. For a pattern encoded in a visual format, such as for example that of the reversing camera in a motor vehicle, one can use for example a simple geometric figure easily recognizable. More generally, we can develop appropriate motifs for any multimedia format, in other words any source of psychosensory data, whether it is to encode sound, still or moving images, imagos combined with sound or any other medium. . The spatiotemporal diffusion signal measurement module 13 produced by the electronic system 40 can be produced by a simple means for generating a measurement of the signal produced from the selected source, in particular when the pattern comprises a predetermined frequency signal. The modulo 13 of measurement implements, in a manner known per se, a frequency analysis by a Fourier transform of the spatiotemporal diffusion signal. This makes it possible to use a light software structure with a simple parameterization. It will be recalled that the positioning of each frequency line in the frequency spectrum generated by the Fourier transform is not affected by the amplitude of the measured signal. Since the amplitude of the signal does not affect the frequency analysis, it is not necessary to have a particular sound level. The use of frequencies in the audible band with a sufficient level, for example in the form of musical notes, may thus enable a human operator to recognize the source selected by listening to the output of the loudspeakers. For a more complex signal, such as for example that related to a pattern representing a musical phrase or an image, the measurement module 13 can implement music recognition or image recognition software known elsewhere as by example but not necessarily those using technologies comparable to those taught in WOE .-.) 117540.

Preferably, the measurement module 13 is connected to or the wires 50 which convey the signal or the data to the means 49 for transmitting psychosensory data. Thus, the spatiotemporal diffusion signal measured is practically independent of the spatial environment of the evaluated electronic system.

The recognition module 14 is arranged, in software form or in the form of a simple electronic circuit, for comparing the signal measurement made by the module 13 with at least one pattern pointed by the module ii in the table 12. The pointed pattern being associated at the source indicated by the module, the signal measurement is expected to be analogous to the pointed pattern. For example, if the pointed pattern is a constant frequency, the signal measurement must include a spectrum line positioned on the frequency given by the pattern. In the absence of recognition of the associated pattern in signal measurement. Module 14 announces a malfunction that is recorded in an evaluation report of the electronic system. The evaluation report is for example in the form of a digital file which includes technical data relating to the context in which the electronic system 40 is when each defect is announced, in particular the source in question. The device set forth above is particularly useful for implementing the method now explained. To evaluate whether the electronic system 40 correctly selects that of the psychosensory data sources 41, 42, 43, 44, 45 to produce an expected time-space diffusion signal from a specified selectable source, the method comprises the following steps. A step 51 is remarkable in that it consists, prior to or at the COUS of the method, in associating a selectable source shock pattern and in including each pattern in the selectable source with which it is associated. For purely illustrative purposes and not exhaustive in step 51, all the sound, visual or other sources to which the electronic system 40 is intended to access are listed. The sources listed are referenced in a correspondence table in the form of a structure. addressable data by digital processing means among which may be mentioned a computer, a dedicated processor or any other electronic circuit configured to read a computer memory and process the content. Each line of the correspondence table being associated for example with a different source indicated in the first column. One or more columns are then written on each line, a predetermined pattern description to distinguish the source. The description may include the full-length code of the pattern in a format also readable from the source or consist more simply of a pointer to a digital file description of the pattern. In a preferred embodiment, arbitrarily or non-arbitrarily predetermined a frequency signal is constant in time and different for each pattern. Such an approach makes it easy to recognize each pattern by performing a Fourier transform of the signal as a spatiotemporal diffusion so as to obtain a signal measurement by simply detecting a line in the generated spectrum. When the pattern is associated with a sound source, the frequency can be predetermined to reproduce a musical note, more pleasant then to hear by a human user of the process.

In the audio field, it is possible to predetermine the frequency in an audible band, typically between 10 Hz and 25 kHz and to describe the signal at this frequency with a sufficient sound power level, in particular by adding to the description a piece of information of high amplitude: to be humanly perceptible. It is also possible to predetermine the frequency out of the audible band, or to describe the signal with a very low sound power level so as to be human imperceptibly. The choice of predetermined frequencies is applicable to domains other than the audio domain. In the visual field, for example, the pattern in the form of a display pattern may be described that has dark and bright alternate colors which, when combined with a screen scan frequency, reproduce a spatial scattering frequency in the plane of the screen. screen. The signal can lead to a visible or invisible image depending on the width OR the contrast level of the ribbons, a combination with the above-mentioned embodiment or other modes of operation. work, we can provide more elaborate patterns, in the form of musical or vocal phrase in the audio field, in the form of a pictogram or text in the visual field. Here again, it is possible to make the pattern audible or inaudible, visible or invisible by playing on different levels of acoustic or latent power, Different methods are possible in step 51 to then include each pattern in the selected source to which it is associated. For a connected memory zone source such as provided for example by a USA key, a USA key track, a compact disc or an SD card, a simple way is to copy the pattern into the memory area of the source. For a sourco type of radio or television broadcast reception as provided for example by an AM amplitude modulation radio transmission station, in LM frequency modulation or a URI, address. (Acronym for Uniform Resource Locator for Wide Area Resource Locator), a simple way is to load the pattern into the broadcast station or WEB) network resource of the source. For a source of typography capturing sound or image as provided for example by a microphone or a rear view camera in a motor vehicle, a simple way to place a sound generator of the pattern against the microphone or a filter on which is engraved the pattern against the lens of the camera. The step 54 is notable in that it involves controlling the electronic system 40 by instructing it to select one of the selectable sources. Step 54 is applicable in many methods relating to the. control for selecting a specified source of the electronic system. Girl is of course applicable in a manual method of using the device 1 described above by indicating a source 10 or a succession of sources which is expected to make a manual selection. Each source is then selected by acting manually or vocally on a human machine interface of the electronic system, for example by turning or pressing buttons, by inserting an information carrier in a reader or in a connector or by touching a screen. touch. Step 54 is also applicable in a semi-automatic method in which, here again for example to the device 1, a source or a source list to be selected is indicated. The module 11 of the device 1 is then for example configured to drive a robotic mechanism intended to interact with the hommo machine interface of the electronic system. Step 54 is particularly advantageously applicable in an automatic method, especially when it is integrated in an automatic test sequence activated by a test sequence specification step 53. In a manner known moreover, step 53 specifies 25 different steps of the test to be performed among which are shown in Figure 3 quo the steps that fall within the scope of the method according to the invention. As a purely illustrative and non-exhaustive example, there may be mentioned a test sequence in which a computer observation program is executed. 30 to successively verify a good sound reproduction on the means 49 for transmitting psychosensory data, in this case comprising one or more speakers, and this from each of the audio sources available to the electronic system. Step 53 positions, for example, an incremental pointer on a list entry of the audio sources. A step 58 executed by the observation computer program detects an end of the test sequence when the source previously verified in step 54 is the last in the list. If the source previously verified in step 54 is not the last in the list, an action is triggered in step 53 to position itself on the next source in the list and re-execute step 54 by pointing to said next source. It will be readily understood that steps 53 and 58 are not necessary for the process when there is only one source to check.

As a purely illustrative and non-exhaustive example, there may also be mentioned a test sequence in which a computer observation program is executed to check a good quality of response to an application request such as for example to request the electronic system to display on a screen (not shown) an image captured by a rear view camera after engaging reverse gear in a motor vehicle. An electronic system of the multimedia equipment type for a motor vehicle, is generally connected to a communication network based primarily but not necessarily on one of the standards 1SO 10681, 11783, 11898, 13400, 11215, or others. The computer observation program, for example executed on a test bench to which the electronic system is connected by said communication network, for example transmits messages on the network which emulates a reversing interlock. An integration or not of the device 1 in the test bench connected to said communication network makes it possible to generate by simulation one or more source indications to be selected as a function of the messages read on said communication network. The end of the test sequence is then typically concomitant with the end of a reverse interlock emulation. When the electronic system is functioning correctly, it is supposed to select the appropriate sources according to the messages which emulate a reverse interlock. For illustrative and not exhaustive reasons, a test sequence in which a computer program of observation is executed to verify a proper sequence of psychosensory data transmission as a function of events likely to occur. (here he cites the known example of a speed-limited v_one alert emitted by an application ") GPS navigation, Galileo, IRNSS, CLONASS, Beidou, Compass or other, while the driver listens to a radio program or a track do compact disc. It is then interesting to ensure that the electronic system switches one of its outputs to the source associated with the navigation application at the instant of appearance of the alert and switches back to the original source after warning signaling. The computer observation program provides for this purpose emulation of messages in one or more navigation application environments to simulate an alert occurrence for different possibilities of sources previously selected at the time of appearance of the alert. Step 55 is remarkable in that it consists in measuring the spatiotemporal diffusion signal produced by the electronic system so as to generate a signal measurement. A Fourier transform of the spatiotemporal diffusion signal makes it possible to generate a signal measurement in the form of a frequency spectrum. Note the attractiveness of this measurement method provided by its ease of implementation, especially for an analog signal. For example, it is possible to extract from the frequency spectrum a pattern signature consisting of one or more frequency lines. Note also the attractiveness of this measurement method provided by its possible operation which remains constant in frequency for any amplitude level of the detectable signal. Other methods of measurement can be envisaged, for example the application of a mask consisting of a succession of bits reproducing a predetermined pattern, particularly adapted for a digital signal. The measurement can be done by means of a microphone, a camera or any other appropriate sensor respectively in front of a loudspeaker, a display screen or any other means 49 for transmitting this psychosensory data capable of diffusing the signal. Such a way of proceeding makes it possible to ensure the conformity of the operation on the whole chain which goes from the good selection of the indicated source until a good effective diffusion of the signal which reproduces the data of the source. It is also interesting to do so by connecting to the electronic system bezel (s) which are intended for connecting the wire (s) carrying the signal or the data to the means 49 for transmitting psychosensory data. The measurement, then made on the analog or digital signal delivered to the output terminals of the electronic device, is just as significant as the broadcast signal itself in sound, visual or other form. The advantages are manifold as for example that of being able to cover the process without having to connect sound reproduction, display or other device to the terminals of the electronic system to be verified. We can also mention the advantage in this case of the immunity of the measurement to the sound or light environment of the place of implementation of the method or the absence of disturbance caused by the method on the sound or light environment of the place of implementation. Step 56 is remarkable in that it consists in comparing the signal measurement performed in step 55 with the pattern associated with the source that was indicated in step 54. For example; when the pattern is an AC signal at the frequency of the source indicated in the table 12, an appearance of the pattern is materialized in the measurement by the presence of a line at that frequency in the frequency spectrum given by the Fourier transform. If the pattern associated with the indicated source does not appear in the signal measurement, a step 57 is executed following step 56 to announce a malfunction that results from a lack of recognition in the measurement of the signal. signal, of the pattern associated with the indicated source. The process continues normally directly when the pattern is recognized or following step 57 otherwise Step 57 may consist of simply displaying an alarm by a light indicator or a control screen display. Particularly advantageously, step 57 is structured to produce technically exploitable data in relation to the defect detected in step 56 and the test sequence started in step 53, such as information on the state of the electronic system, before , during and after the occurrence of the defect. The recording of technical data in an evaluation report of the electronic system makes it possible to establish correlations between various states of the electronic system, in particular by repetition or execution of different test sequences on the same or on another electronic system within the electronic system. a test campaign started from a step 52 and ending in a step 59 after execution of a last test sequence. A computer program comprising program code instructions for executing the steps of the method just described when it is executed on a computer, makes it possible to industrially test a large number of configurations of the same system. electronics and a large number of electronic systems, including automatically.

Claims (10)

REVENDICATIONS1. A device (1) for evaluating whether an electronic system (40 comprising means (48) for selecting one of several sources (41 42, 43, 44, 45) of psychosensory data and means (49) of psyehosenserial data mission in the form of a spatiotemporal diffusion signal, includes a malfunction for producing an expected time-space diffusion signal from an indisputable selectable source, characterized in that it comprises a control module (11) of said means 48) of selecting to indicate said selectable source; a correspondence table (12) addressable by said control module (11) and containing at least one pattern which is associated with said selectable source and which is transmissible from said selectable source; a spatiotemporal diffusion signal measuring module (13) produced by the electronic system 40) generating a signal measurement; and - a recognition module (14) which compares said signal measurement with said associated pattern so as to announce a malfunction in the absence of recognition of said associated pattern in said signal measurement. 2. Device according to claim 1, characterized in that said pattern comprises a predetermined frequency signal. 3. Device according to claim 2, characterized in that the module 13) generates said signal measurement by performing a Fourier transform of said spatiotemporal scattering signal. 4. Device according to one of the preceding claims, characterized in that said pattern comprises a humanly imperceptible signal. 5. Device according to one of the preceding claims, characterized in that said pattern comprises a humanly perceptible signal. A method for judging whether an electronic system (40) correctly selects one of several sources (41, 42, 43, 44, 45) of psycho-synthetic data to produce an expected time-space diffusion signal from a selectable source indicated , comprising steps of: - associating a pattern with each selectable source and including said pattern in said selectable source; - control the electronic system (40) indicating to select one of the selectable sources; measuring the spatiotemporal diffusion signal produced by the electronic system so as to generate a signal measurement, and comparing said signal measurement with said associated pattern so as to announce a fault in the absence of recognition of said associated pattern; in said signal measurement. 7. A method according to claim 8, characterized in that said pattern comprises a predetermined frequency signal so as to generate a signal measurement by performing a hem transform of said spatiotemporal scattering signal. 8. Method according to one of claims 6 or 7, characterized in that said pattern comprises a humanly imperceptible signal and / or a humanly perceptible signal. A computer program comprising program code instructions for performing the steps of the method according to one of claims 6 to 8 when said program is executed on a computer. 10. Evaluation report of an electronic system, characterized in that it comprises technical data produced by implementing the method according to one of claims 6 to 8.