CH639227A5

CH639227A5 - DEVICE AUTOMATICALLY PRODUCING THE STOPPING OF AN APPARATUS FOR TRANSMITTING ACOUSTIC AND / OR OPTICAL SIGNALS.

Info

Publication number: CH639227A5
Application number: CH647580A
Authority: CH
Inventors: Rephael Hatouka
Original assignee: Pantotecnic Etablissement
Priority date: 1980-08-28
Filing date: 1980-08-28
Publication date: 1983-10-31
Also published as: DE3110929A1

Description

La présente invention a pour objet un dispositif produi- spectre analysé aux fréquences audibles essentiellement. Ce sant automatiquement l'arrêt d'un appareil émetteur de si- filtre passe-bande 6 est suivi d'un redresseur-moyenneur 7, The subject of the present invention is a device producing spectrum analyzed essentially at audible frequencies. This automatically stops a bandpass filter emitting device 6, followed by a rectifier-averager 7,

3 3

639 227 639,227

dont la constante de temps pourra être, par exemple, de relais 2 de sorte que l'alimentation de l'appareil n'est pas in- whose time constant could be, for example, relay 2 so that the power supply to the device is not in-

50 ms, destiné à mesurer la puissance du signal filtré en 6. terrompue. 50 ms, intended to measure the signal strength filtered in 6. terrompue.

Le dispositif comprend trois filtres 8,9 et 10, montés en Si, au contraire, l'appareil cesse d'émettre les signaux, les parallèle à la sortie du redresseur-moyenneur 7, et qui don- bruits subsistant ne présenteront ni des variations de niveau nent, à leur sortie, une puissance moyennée avec trois cons- 5 sonore ramenant le comptage du circuit logique 1 à zéro, ni tantes de temps différentes. On pourra avoir, par exemple, une amplitude ou une fréquence de variation de niveau suffi-pour ces trois filtres, des fréquences de coupure respectives de sante pour interrompre le comptage durablement, de sorte 0,1 Hz, 1 Hz et 10 Hz. que, après un temps donné, fonction de la valeur de consigne The device comprises three filters 8, 9 and 10, mounted in If, on the contrary, the device stops transmitting the signals, the ones parallel to the output of the rectifier-averager 7, and which remaining noises will present neither variations level, at their output, a power averaged with three consumers reducing the counting of the logic circuit 1 to zero, or aunts of different times. We can have, for example, an amplitude or a frequency of level variation sufficient for these three filters, respective cutoff frequencies of health to interrupt the counting durably, so 0.1 Hz, 1 Hz and 10 Hz. , after a given time, depending on the set value

L'existence de ces trois filtres est nécessitée par le fait que, appliquée au circuit logique 1, par exemple quatre minutes, la pour que le dispositif soit fiable, il est nécessaire qu'il soit apte io logique coupera l'alimentation de l'appareil. The existence of these three filters is necessitated by the fact that, applied to logic circuit 1, for example four minutes, for the device to be reliable, it is necessary that it is suitable io logic will cut the power supply to the apparatus.

d'une part à détecter l'existence ou l'absence des signaux émis, Il est à remarquer que de brefs «clics» produits par la et d'autre part à discriminer ceux-ci de tous autres «bruits» pointe d'une tête de lecture sur le sillon d'un disque n'auraient tels que bruit d'une station à moyenne fréquence ou d'une sta- pas pour effet de ramener intempestivement à zéro le circuit tion à modulation de fréquence non équipée du dispositif de comptage de la logique 1. En effet, ces clics n'apparaî-«muting» ayant cessé d'émettre, bruit de fond produit par un is traient qu'à la sortie du filtre 10 et n'auraient pour effet qu'un support d'enregistrement ne portant aucun enregistrement, blocage momentané du comptage, se traduisant par une lé-cliquetis de la pointe de lecture d'un bras de pick-up sur le sii- gère augmentation du temps s'écoulant avant l'arrêt de l'ap-lon de fin de disque en cas de non fonctionnement du système pareil. on the one hand to detect the existence or the absence of the signals emitted, It should be noted that brief "clicks" produced by the and on the other hand to discriminate these from all other "noises" tip of a read head on the groove of a disc would have such noise of a medium frequency station or a station having the effect of inadvertently reducing to zero the frequency modulation circuit not equipped with the counting device of logic 1. Indeed, these clicks only appear “muting” having ceased to emit, background noise produced by an is only produced at the output of filter 10 and would only have the effect of recording without any recording, momentary blocking of the counting, resulting in a slight clicking of the reading tip of a pick-up arm on the seat, increasing the time elapsing before stopping the ap-lon end of disc in case of non-functioning of the same system.

de retour automatique dudit bras, etc. Il est à remarquer également que la sortie du filtre 8 est re- automatic return of said arm, etc. It should also be noted that the output of filter 8 is re-

Les filtres 8 et 9 fonctionnent lorsque les signaux émis sont 20 liée non seulement à l'amplificateur différentiel 11, mais éga-de la parole ou de la musique classique, par exemple, qui com- lement d'une part au comparateur à fenêtre 12 et d'autre part portent d'importantes variations de niveau sonore produisant au redresseur-moyenneur 15, afin d'accroître le seuil de géné-d'importantes variations de tension des signaux émis par l'ap- ration des signaux RESET ou HOLD en fonction du niveau pareil. Dans ce cas, l'écart des moyennes issues des filtres 8 et du signal capté. Cette tension d'asservissement selon le niveau 9 est évalué par un amplificateur différentiel 11, que comporte ^ du signal capté (en 4) permet d'étendre la dynamique du le dispositif, et sur lequel sont branchées les sorties de ces deux système et peut être, à choix, appliquée en 11 et 13 ou en 11 et filtres. Le dispositif comporte en outre un comparateur à fe- 14. Filters 8 and 9 operate when the signals emitted are linked not only to the differential amplifier 11, but also to speech or classical music, for example, which on the one hand acts like the window comparator 12 and on the other hand carry significant variations in sound level producing at the rectifier-averager 15, in order to increase the threshold of gener-important variations in voltage of the signals emitted by the sourcing of the RESET or HOLD signals in function of the same level. In this case, the difference between the means from the filters 8 and the signal received. This control voltage according to level 9 is evaluated by a differential amplifier 11, which comprises of the signal picked up (in 4) makes it possible to extend the dynamics of the device, and to which the outputs of these two systems are connected and can be, as desired, applied in 11 and 13 or in 11 and filters. The device further includes a comparator to fe.

nêtre à seuil 12. Si l'écart des moyennes dépasse ce seuil, il sera Le présent dispositif pourra être réalisé à l'aide d'un ou admis que le signal correspond à un son désirable. Le compa- plusieurs circuits largement intégrés, hybrides ou monolithi-rateur 12 génère alors un signal dit «RESET», lequel est en- 30 ques, les blocs fonctionnels linéaires pouvant évidemment être voyé au circuit logique 1 et qui ramène à zéro son dispositif de réalisés à l'aide d'un processeur digital de signaux comme, par comptage, dans le but indiqué précédemment. exemple, le processeur 2920 de la compagnie INTEL. Des af- be at threshold 12. If the difference in the means exceeds this threshold, it will be The present device may be produced using an or admitted that the signal corresponds to a desirable sound. The comparator of several largely integrated, hybrid or monolithic circuits 12 then generates a so-called "RESET" signal, which is then 30, the linear functional blocks can obviously be seen on logic circuit 1 and which brings its device to zero. performed using a digital signal processor as, by counting, for the purpose indicated above. example, the 2920 processor from INTEL. Af-

Quant aux filtres 9 et 10, ils fonctionnent lorsque les si- fichages tels qu'indiqués en 16 et 17, par exemple des indica-gnaux émis ne présentent que de brèves variations de niveau teurs à spot ou à digits utilisant des LEDS, des cristaux liqui-sonore, cet état pouvant se prolonger pendant de relativement35 des ou des lampes fluorescentes, permettront de renseigner longues durées, lors par exemple de l'émission de musique de l'utilisateur sur l'état du circuit de comptage de la logique 1. jazz (séquence de batterie par exemple). Il faut alors empêcher On pourra adjoindre au présent dispositif une horloge que le comptage n'atteigne intempestivement la valeur de destinée à arrêter, après un temps donné, fixe ou réglable, consigne, ce qui s'obtient en interrompant celui-ci. A cet effet, l'appareil émetteur même si celui-ci continue à émettre des si-les sorties des filtres 9 et 10 sont reliées à un amplificateur dif- 40 gnaux (cas d'un récepteur radio recevant une émission non férentiel 13 dont la tension de sortie est elle-même appliquée, stop, par exemple). As for filters 9 and 10, they operate when the displays as indicated in 16 and 17, for example of the signals emitted, show only brief variations in level with spot or digit using LEDs, crystals liqui-sonorous, this state being able to be prolonged during relatively 35 or fluorescent lamps, will make it possible to inform long durations, at the time of the emission of music of the user for example on the state of the circuit of counting of logic 1. jazz (drum sequence for example). It is then necessary to prevent. It is possible to add to this device a clock that the counting inadvertently reaches the value of intended to stop, after a given time, fixed or adjustable, setpoint, which is obtained by interrupting it. For this purpose, the transmitting apparatus even if the latter continues to transmit si-the outputs of the filters 9 and 10 are connected to a digital amplifier (case of a radio receiver receiving a non-ferric transmission 13 whose output voltage is itself applied, stop, for example).

à travers un filtre passe haut 14, par exemple de premier or- Le présent dispositif pourra constituer un accessoire s'a- through a high pass filter 14, for example of the first order. The present device could constitute an accessory if

dre, à un redresseur-moyenneur à seuil 15 qui, lorsque la fré- joutant à un appareil existant, qui prendra les signaux, en 4, quence et l'amplitude de la tension issue du filtre 14 cause un des prises de l'amplificateur ou du pré-amplificateur dudit ap-dépassement de son seuil, génère un signal dit «HOLD» qui 45 pareil, prévues pour alimenter un magnétophone supplémen-bloque durant ce dépassement le comptage de la logique 1. taire, un casque d'écoute, des haut-parleurs supplémentaires. Aussitôt que les sons émis comportent une variation de tona- Le présent dispositif pourra aussi être intégré dans les am-lité permettant à la paire de filtres 8 et 9 d'opérer comme indi- plificateurs ou pré-amplificateurs de l'appareil. Il faudra alors qué précédemment, le dispositif de comptage du circuit logi- simplement que le module d'intégration soit équipé d'une que 1 est remis à zéro, sans rapport avec l'interruption du 50 prise telle que la prise représentée schématiquement en 18, pi-comptage par le signal «HOLD». Ainsi, tant que des signaux lotée par le relais 2, servant à alimenter en courant du secteur sont émis par l'appareil, le circuit logique 1 n'actionne pas le tous les modules de la chaîne. dre, to a rectifier-averager with threshold 15 which, when joining it to an existing device, which will take the signals, in 4, quence and the amplitude of the tension resulting from the filter 14 causes one of the sockets of the amplifier or of the pre-amplifier of said ap-exceeding of its threshold, generates a so-called “HOLD” signal which, similarly, 45 intended to supply a tape recorder, during this exceeding, blocks the counting of logic 1. shut up, headphones, additional speakers. As soon as the sounds emitted include a variation in tone. The present device can also be integrated into the am-lity allowing the pair of filters 8 and 9 to operate as indicators or pre-amplifiers of the device. It will then be necessary to qué previously, the circuit counting device logically simply that the integration module is equipped with one that 1 is reset to zero, unrelated to the interruption of the socket 50 such as the socket shown diagrammatically at 18 , pi-counting by the “HOLD” signal. Thus, as long as signals batched by the relay 2, serving to supply current from the sector are emitted by the device, the logic circuit 1 does not actuate all the modules of the chain.

C VS

1 feuille dessins 1 sheet of drawings

Claims

639,227

2

General acoustic and / or optical CLAIMS, such as radio receiver,

1. Device automatically producing the shutdown of a HI-FI device, television receiver, etc.

such transmitter of acoustic and / or optical signals, charac- Such stop devices are known per se. Some terrified by the fact that it includes means for detecting functioning on a temporal principle (predetermined duration of signals and noises emitted by the apparatus, means for describing the functioning of the apparatus) or positional (end of the between them, means generating a recording port signal, for example).

Stop operating in response to the information that provides- The disadvantage of these provisions lies, for the first-

deny said means of discrimination, and means back, in the fact that the user of the device must know at the end of the device controlled at least indirectly by said advance the duration of the scheduled hearing and, for the seconds, stop signal, the whole so that the stop occurs when, io in the fact that it is necessary that the apparatus includes a gold-for a given time, the apparatus ceases to '' issue the mobile gane whose position will serve as a control means,

signals. In addition, if a recording medium is used

2. Device according to claim 1, characterized by the as control means, the apparatus continues to function-fact that said means of discrimination between signals and ner even if this support no longer carries any recording and, the noises include a rectifier - medium and at least ^ consequently, no longer emits any desired signal.

two filters arranged to supply, at their output, a power Other stopping devices still exist, which operate

averaged with two different time constants. based on the absence, for a given time, of information

3. Device according to claim 1, characterized by the service on the part of the user. The disadvantage of these provisions that the means for generating the stop signal comprise sitive lies in the fact that, in order to avoid any untimely stop, a logic circuit comprising a time base and a provision, for example during reading of long recordings of the counting of the pulses emitted by said basis of the dream, it is necessary to provide periods of non-intervention relative time, which, when the counting reaches a set value ment long so that the device can , in certain cases, determined, produces the stop signal. continue to operate unnecessarily for equal times

4. Device according to claim 3, characterized by the long ment.

The purpose of the present invention is to remedy these disadvantages of the means for resetting said counting device to zero, by providing a device for stopping an apparatus controlled by said means. means of discrimination. acoustic and / or optical signal transmitter which functions

5. Device according to Claims 2 and 4, characterized on the basis of the presence or absence of the emission, by the fact that the reset means comprise, by said apparatus, signals.

comparator with threshold window to which signals are sent30 This object is achieved by the means mentioned in the rrepresentant the differences between the signals leaving said vendication 1.

filters, which signals are constituted by powers The drawing represents, by way of example, a form of execution

averaged, these differences being compared, in said part of the subject of the invention.

window trimmer, at said set value, in such a manner. The single figure is a block diagram of a device

Finally, when this is reached, the comparator automatically emits 35 stopping an apparatus emitting a signal causing the signal device to return to zero.

counting. The device shown comprises a logic circuit 1

6. Device according to claim 3, characterized by comprising a time base and a counting device so that the means generating the stop signal comprise pulses emitted by this time base, and which is means capable of suspending the counting, controlled by 40 arranged in such a way that, when the counting exceeds one of said means of discrimination. setpoint, predetermined, the logic activates a re-

7. Device according to claims 2 and 6, characterized in the solid state 2 connected in 3 to the sector. This relay 2 by the fact that the means capable of suspending the counting then opens, thus interrupting the supply of the device takes a rectifier-averaging device with a threshold at which there is mains current.

signals representing the differences between the 45 The device is arranged so that as long as said device

signals coming out of said filters, which signals are constituted reil emits signals, that is to say the device for counting the circuit by averaged powers, this rectifier-averager being logic 1 is periodically reset before being "debor-arranged in such a way that, when the frequency and the amplitude der ”, ie the counting is suspended, so that, in the said difference signals reach the value of its threshold, two cases, the relay 2 is not actuated and the device continues it transmits a signal causing the counting to be interrupted. 50 to be fed.

8. Device according to Claims 5 and 7, characterized If no return to zero of the circuit counting device by the fact that said discrimination means comprise logic 1 occurs before the count has reached the va-three filters, one of said filters being connected to the foix to the setpoint means, which means that the device no longer emits a reset of the counting device and to the signal means, a stop signal is emitted by the logic 1 , so you stop counting. 55 that relay 2 opens and that the device stops.

9. Device according to claim 8, characterized by the These functions are obtained by the following means: the fact that the information coming from one of said filters is in- The device comprises a socket 4 intended for connection seen directly to the comparator as well as to the rectifier- on the signal-sending device in order to receive the averaging signals in order to increase the generation threshold emitted by the latter. It further comprises an amplifier som-of the return to zero signal of the counting device and of the compressor compressor 5 whose purpose is to add the difference in counting interruption according to the level of the signals. signal channels and increase the possible general output dynamics of the device. the level of the input signal. Its compression ratio could be one per thousand, for example; it can be pseudo logarithmic or with automatic gain control.

65 The device comprises a bandpass filter 6, to which the conditioned signal is sent, the purpose of which is to reduce the