DE2149519B2 - Circuit for the digital control of current or voltage levels of operating functions in radio and / or television sets - Google Patents

Description

The invention relates to a circuit mentioned in the preamble of claim I. Such a one Circuit is already known (Funk-Technik 1971, No. 9, p. 330.332.333).

So far it has been common to remotely control the operating functions of radio and television sets, everyone Allocate operating function your own control sequence. With the mostly common ultra-fine controls so each operating function has its own ultrasonic frequency. The disadvantage of this method is In addition to the extensive technical effort, the necessary adjustment of these frequencies, which both on the Uitrüschallsender. as must also be carried out on the ultrasound receiver. Since the forward and backward controls must each count as a separate function. are used for remote control of Color television receivers z. B. at least eight different tax queries / cn required. It is also disadvantageous that such arrangements are not readily implemented in the art of integrated circuits can, as the required inductances and / to some extent not yet allow the larger capacities to be integrated.

From the magazine Funk-Technik 1% 9. No. 17. Pages 645 to 647 it is known to use short pulses for a pulse generator ^- .u. | cdoch, a purely mechanical arrangement is controlled here and there is no coding in the actual sense. In the invention, however, there is also a cmc purely electronic circuit.

According to the above mentioned Lileraturstelle Funk Technik 1971. No. 9, pages 330 to 333. is / was Also described a digital circuit for television receivers, a digital counting circuit being provided is. the steps of which appear one after the other in one direction as /.ihlimpiilsc on the counter, and a Kornmando signal the counting pulses are generated, which are sent over a common transmission path. This circuit, designed in the form of a ring / dial is only located in the receiver and cannot trigger any analog functions. It just switches on the channels (e.g. from »On« to »Off«). Volume. Brightness. Color saturation, etc., on the other hand, are displayed in usually controlled by the remote control, d. H. they are over in the serving cheese Potentiometer influences the volume, brightness * and color saturation regulation via a cable lie parallel.

It should also be noted that it is known per se to carry out the transmission from the transmitter (transmitter) / to the receiver wirelessly. So is /. Ii. in this context, in itself, the use of optical Sigridleinrichtun)! cn. 1. l <in the form of light or infrared signals by means of pulsed light (Siemens-Zeitschrift 1965, Issue 11, pages 1245 to 1249) and the use of pulses of variable length in optical transmission systems (International Electronic Rundschau 1966, No. 12, page 681 to 687) as well as the use of audio frequency and coded

Pulse signals in inductive transmission systems (Elektro-Anzeiger No. 17 of September 4, 1968, p 357 to 359) known.

Finally, through Wireless World magazine,

ίο April 1970, pages 175 to 177 circuit arrangements for digital (remote) control via cable or radio frequency connections of up to 15 circuits known in which counting circuits or information memories are provided which have at least as many different outputs as different ones Command signals are available. However, according to this known arrangement, no circuits are provided, one operation of operating or analog functions (i.e. volume, brightness, color saturation etc.) and where the digital Anuijg converter works for each current and voltage level repeated impulses are controlled, including an automatically repeating cycle on the transmitting side of the digital pulse encoder must be carried out and each coded signal can be reproduced in full must to avoid incorrect evaluations or malfunctions to avoid on the receiving side. There are no measures specified for the receiving side, such as door the mentioned operating and analog functions

jo (current or voltage levels) over a certain Command a control should take place.

In contrast, the invention is based on the object, in a circuit of the in the preamble of Claim I mentioned type not only inputs and

) 5 switch-off functions to be triggered by digital transmission, but rather also the operation of Analog functions (volume, brightness, color saturation. Contrast) can be achieved with purely digital circuits that are implemented in integrated circuits permit.

This object is achieved according to the invention by the features mentioned in the characterizing part of claim 1 solved. Further refinements of the invention can be found in the interclaims.

The advantages achieved by the invention are in particular that analog operating functions are also possible (Volume. Brightness. Color saturation, contrast) can be carried out digitally and these circuits largely implemented in integrated technology and

v) Multiple existing integrated circuits, if applicable also in combinations, used and known elements of digital technology, such as binary? Counting chains, decoders and matrix circuits can be used si.ic. The overall circuit of both the receiver and the transmitter can each be fully integrated and in realizable in a circuit. This is both a significant cost of the circuit and one Miniaturization given.

Exemplary embodiments of the invention are shown in FIG

M) drawing and are described in more detail below. It shows

Fig. 1 cm block diagram of an inventive Kommamlosignalerzcugers according to the invention Circuit that does that with the command pulses

(- ■> emits rectangular modulated I Htraschallsiijnal,

I ig. 2 shows a block diagram of the receiver part according to the invention with an amplifier. Demodulator, memory and decoder according to the crfindunKSKcm according circuit.

Using the block diagram F i g. The function of the digital command signal generator in the ultrasonic area is explained. When one of the command keys KTt ... KTg. which can also be formed by galvanically or capacitively triggered contact or proximity switches, the bistable electronic switch ESi is switched on immediately. The multivibrator MU then periodically supplies square-wave pulses lh both to the input of the first number flip-flop Fn of the binary counting chain BZKi and to the monostable electronic switch ES).

With the first positive rising edge of the first square pulse of the pulse series U \ >; im (1 iehe outputs of the counting flip-flops Fn ... Fi „of the binary counting chain B / .K \ jump to the plus potential switched on and the monostable electronic switch ES ₂ flops from the outputs of flip Fi ₄ and e ^ her via the matrix circuit MA], and, in turn, sets the ultrasonic oscillator UOin operation which periodically off by the rectangular pulse sequence Ui and is turned on the rechtcckmodulicrte ultrasonic signal. is emitted by the ultrasonic transducer USG , which can e.g. be a barium titanium ßiegesehwinger.

After the first pulse f /, all flip-Ilop outputs are brought to positive potential! Has. the monostable electronic triple switch ESi via the in the delay circuit V /. delayed switch-on pulse U _{2 of} the bistable electronic switch ES \ switched on. So that the switch-on state is ended before the arrival of the second pulse of the initial pulse series U \ . the delayed switch-on pulse (A is limited in its duration, which can be achieved, for example, by differentiating. The connections distributed to the various contacts of the command buttons KT \ ... KT * with the help of a diode or resistor matrix MA _{2 ensure this} that with each actuation of an ai. its command key a different combination of the outputs of the flip-flops Fn. F; and Fm are switched to the ground potential via the monostable electronic triple switch ESi with the arrival of the delayed switching pulse U ₂ of the second pulse of the pulse series U] skipping counting processes and the switch-off process for the ultrasonic oscillator is reached after a more or less reduced number of pulses, depending on which of the command keys KT] ... KTs is pressed.

If none of the flip-flop outputs Fn. F .; or Fn is connected to ground, the eighth pulse from U generates a switch-off position of the mono: unstable electronic switch ES ₂ via the matrix circuit MA \ . which also interrupts the operation of the ultrasonic oscillator. This switch-off position is reached earlier with all other matrix combinations. The criterion for switching off is the drop in the positive potential at the output of the flip-flop F _H to zero potential. Regardless of how this criterion is achieved, the binary counting chain continues to count normally from this moment on. After a further eight counting steps, the output of the flip-flop F15 falls from the positive potential to the zero potential and thus maintains the switched-off state of the monostable electronic switch ES ₂ , which would otherwise be returned to the switched-on position by the output of the flip-flop Fu. After an additional sixteen counting steps, a switch-off signal for the bistable electronic switch ES] appears at the output of the flip-flop F ₁₆ , which in turn finally switches off the entire arrangement when none of the command keys KTt ■ ■ ■ KTn is pressed any more. If, however, a key is still pressed, /.'.Vi is switched on again after a short * pause, which depends on the time constants of the Einsehaltzwcigcs, and the entire counting cycle starts again, even if the operation of the command basic after the delayed switching pulse U _{2 is} interrupted, a complete command signal appears on the ultrasonic transmitter USC.

The short one, by differentiating the switching signal A pulse generated by a counting output thus leads / 11 to a brief switch-off of the bistable electronic Switch when a command box is printed remains and a permanent shutdown if no command load is pressed. whereby the kur / zeiti ge or persistent shutdown may cause the digital counter to be reset. With When a command basic is pressed, the Different setting corresponding to the command signal of the counter causes such that in the then the counting process starts the remaining payment Pulse number results in exactly the desired coding of the relevant command signal.

For this purpose, each command key mi 'can be equipped with a corresponding number of contacts in order, if necessary, to switch on the electronic switch and to preselect a counting device in an electrically isolated manner / u

JO can. It is also useful to switch the electrical connections through decoupling hzw. Switching diodes or transistors ncr / '. Istellen.dic respectively can only be controlled by one contact of the command button.

It is beneficial in most use cases. if only one complete command signal is generated when a key is pressed briefly, at Continuous actuation of a key, however, the associated command signal is repeated periodically as long as the actuation of the key continues, but regardless of the time of the interruption a started signal is completely terminated in each case.

The individual impulses of the Komiuando signals can be switched off and on via the wireless connection path. Modulation changes or frequency changes are transmitted sequentially. Likewise can the impulse combinations of the command signals also at least partially simultaneously over different ones Frequencies and / or types of modulation are transmitted.

The switch-on and possibly also switch-off pulses for the above-mentioned bistable Electronic switches can also be encoded in the command pulses and sequentially via transmit the common transmission path or simultaneously via other frequencies or types of modulation will. The switch-on and switch-off pulses can be distinguished from other pulses by their duration be made.

2 shows the block diagram of the receiving part of a digital ultrasound control. The ultrasound signal modulated with the command pulses is converted into electrical signals with the aid of the microphone Mi, which can also be a barium titanate transducer, and fed to the input of the amplifier V. FIG. After amplification and demodulation in the demodulator DEM , the recovered command signal t / 3 is the input of a binary counting chain

(digital counter) li / k; iirul at the same time also the 1'IHJuIIiJi (U ¹ S Uiuvilvalors ί '/ V / ujjclcitcl. The Univibra tor wild with the leading edge of the first impulse of the command signal I Ί brought into its unstable sound level and then fills the nnnileslens corresponds to the course of the long-lasting koinmando signal, back to its stable vision. In front of vvp '·.' icdoch the digital counter (binary counting chain H / h- :) of ιλμι pulses / Ί of the command signal in the / ahlposition assigned to the signal controlled, whereby The communication signal is saved Rolling out the digital / awl ··, inching capacitive or magnetic saliva can be provided here or an electronic information memory is provided . (iilvvcisi'M. as there are different Koniniandosig iiale you will be further electronic switches (mono stable elekiionische Dreif.k hsehallei /'.Sj) through the Ahschaltfl.inki · (ύ des Univ ihr.Mors I S. those in the differentiating circuit I) II / u tlem impulse /. (liffc en / iert wildly, briefly sounded and ran through the exits of the / ahl-l lip-llops />../.·. 2 and 3 of the coding circuit I) I. the well-known De / im.ildecoder, iiifgeb.iut lsi. | e after the l'olenlialkombm.ilion at the I ingangen appears in a certain of the exits Λ ι. Λ. the desired signal, the duration of which is generally identical to the I inschalldaiier of the monoslab electronic triple switch

In front of I.mg.mg 3 of Decoiherschalliing I) I is the monosiahik · electronic sound / S ',. which is switched periodically with the impulses of a (\ - I) llurst and thus modulates the signal to be passed on to input i in this hurst. All outputs read decoders I) I. which are connected to this input 3 via its internal matrix, supply with this circuit (.V - I (Hurst / ur resetting of the digital control circuits for security fiinkiionen. The Burslgenei ator lid is started here every time when the w Your electronic switch (monostable electronic triple switch / Si) a certain, e.g. IV positive potential is switched through via the monostable electronic switch /.'.V.

The circuit example can, for. I !. be designed in such a way that the l'ms to Achlf.i impulses of the command dosign.ds each also at ile outputs - \> his \. a positive 11 Ausloseitrpiils for lewcils an operating step of the connected Hcdienungsschallung appears.

In more general terms, a binary-coded counting chain is provided in this arrangement for storing and decoding, which has a counting input for the coded commodity signal and is connected with -hren η outputs to η circuits of a known decoding circuit. at the 2 "outputs two switching states are possible for each output depending on the signals at the π inputs. Only one output has a different state than all other 2 ~ - 1 outputs, and the required 2 signal combinations at the η outputs of the binary counting chain are reached by the different pulse numbers of a command signal at the [input of the counting chain.

With a corresponding coding of the command signal, it is also possible to use a scoop for storage and decoding. I ur a binary coding such an arrangement, as can be seen, e.g. B realized by using a binary scoop, the numeric input of which is supplied with command signals, each of which consists of pulses up to a maximum number of pulses 2 ^/ ni.i \. where / um! / „Rn each a whole positive number isi and the

Counting chain preferably made of / ,, .. ,, (iliedern nut /

Looks at exits.

In this arrangement, too, only one output has a different sound condition than all the others. ι, \, sgange. In this way, the respective command sign.il a clear distinction between a number of loaning options is possible Another option for signal repetition by one step w eili'ifi'sli'iiri ι vwi'ilrii W ι; .νίι ι.1 · w hich, w hen the associated Komman dosign.il is completely stored and decoded Therefore, with <. \ ct Deeodicrschallimg leather output via an electronic switch connected to the I ing.uvg the associated /ahlsch.illung for the I izeiigung the Hedieniiugsschrnte connected and the elekiionische switch is eiiigeschallcl at the earliest after the storage of the last pulse of a complete Koininaiidosignals and at the latest before the memory ng of the lelzleu impulse of the subsequent comm.uidosign, ils switched off. The electronic switches hegl at the outputs Λ ... \ - and specially drawn in the flour.

I Ui binar coilici e Svslcmc, however, there is another possible arrangement, which then sees that the η outputs of the binary coded / ahlkelle H / K are connected only to the n I input of the known decodersi-attitude via η electronic signals that liuheslens after the storage of the last impulse of a ν utterly indigenous command signal and, at the latest, before the storage of the last impulse, the following command signal should be switched off D. The electronic switch: · '! here flour at the exits \ -. . \ *. but to the present in smaller numbers l'ingangen I. 2. 3 of the decoding circuit DI is to be flour 2 '. but only π electronic switches are required.

After the example is exported, the des l'iuvibralors dilleienziei I. and dei from it resulting impulse for a short time I msch.illen dei electronic sound used. If higher tests are placed on the (inaccurate wedge, it is more exact, mn the switch-off thanks to one I'imibnitor one / wait to switch on the univibrator whose longest switch-on duration is shorter than the shortest pause between two command signals plus the duration of the shortest command signal, and the duration of its on-time also the first inschalizcit of the electronic Switch controls.

To the already in German patent 2! 38 87r> the proposed use of the (\ - I) countdown burst for several operating arrangements together is possible, such a decoding arrangement is provided in which at least one of the electronic switches in the 1 connected state is additionally mn an AV-I) burst according to the German Patent 21 38 87b for resetting the counting chains used for the measurement functions is modulated

⁽ ) 10

ie! 'niMi'llciiirnhlinij; to dijiii.ik'u (it'fi illiirsstιΐ »μ be wireless. These wireless connections

lk'dii-iHinj; sfiiiiklionL'ii k.inn pumMcl / ii der uhlklicn kciniicn with l.ic.i-, llochfrequcn /. clcklrostntischcn.

lcllcmriihtiinj; for this ο llcilicniinjisfunk I κμιι-π k.ipii / iiivcn. iiuigiotic. mdiikli \ cn. .ikuslisclicn or

. • closed wcrik-n. 'llr.isch.ill-Siprjlcn work, ie ί lbcrininimpsMrecko k.inn μ; ιη / oiler partially

L \ niiiiuen: I lici / 2 Miai ii 'A'i

Claims (7)

1 claims: 1. Sounding for the digital control of current or .Voltage levels of operating functions in radio and / or television sets, with a digital number circuit or a digital information memory being provided. whose steps occur one after the other as counting pulses at the counting input and a command signal generates the counting pulses, which are sent over a common transmission path and are used to trigger the digital control of the operating functions, and the counting circuit or the information memory has at least as many different outputs as there are different ones Command signals are to be executed, characterized in that a digital counter (BZK ₁ ) is provided on the transmitter side for the transmission of analog functions, and that each command key (KT \ ... KT _x ) to be actuated by Hi'nd is assigned to this arrangement the preselection of a specific counting program is, which corresponds to the respective command signal, and that each Kornmando key (KTi ... KTg) turns on a common bistable electronic switch (ES \ ) when actuated, which sets a common periodic pulse generator (MlI) into operation, whose pulses (Ui) dem Input of the digital Counter (BZKt) and at the same time to an electronic switch (ES2) are placed in such a way that the Einsehallung of this electronic switch (ESj) b -.- takes place in the first zaniten pulse and the switch-off after expiry of the command key (KT, .. . KT _x ) preselected I'ahlprogri'.mms. while the pulse generator (MIi) wide::. delivers pulses that no longer belong to the command signal to the counter input (BZKi) until the required pause length between two command signals. which is determined by the number of subsequent counting levels (I i ". BZK]) is reached. and that via one of the subsequent counters (output from Fih) or a combination thereof, the bistable electronic switch (ESi) is switched off, thus also the pulse generator (MU) and the counter, and that for decoding clic n outputs of a binary-coded counting chain (IiZKj) are connected to the η inputs (I, 2, 3) of a decoding circuit (DIi) via η further electronic switches (I ₁ Γ, 2, 2 ', 3, 3' - ES * -), which are connected at the earliest after the Storage of the last pulse of a complete command signal and can be switched off before the last pulse of the subsequent command signal is saved at the latest. 2. A circuit according to claim 1, characterized in that for decoding each output (Λι ... A *) of the decoding circuit (DIi) is connected via an electronic switch (not shown) to the input of the associated counting circuit for generating the operating steps, and that the electronic sounder is switched on early after the last pulse of a complete command signal has been stored and can be switched over before the next command signal is stored. 3. Circuit according to claim I or 2. characterized in that the timing of the further ·. '! electronic switching filter (ESx or not shown) is carried out by a common univibrator (monoflop UN) , the switch-on position of which is triggered by the leading edge of the first pulse of a command signal (U \) , and the switch-on duration is selected so that its switch-off position at the earliest after last pulse of the longest-lasting command signal (Ui) occurs within the pause between two possible command signals, whereby the switch-off edge of the univibrator ίο (UN) is used to switch on the other electronic switches (ES, or not shown). 4. A circuit according to claim 3, characterized in that the switch-on edge of the univibrator (UN) for switching off the electronic switch i:> is used. 5. A circuit according to claim 3, characterized in that the switch-off edge of the univibrator (UN) differentiates and this pulse is used for briefly switching on the further electronic switch (ESt) . 6. A circuit according to claim 3, characterized in that the switch-off edge of the univibrator (UN) switches on a second univibrator whose longest on-time is shorter than the shortest pause between two command signals plus the duration of the shortest command signal, and that the second Uir.vibrator with its on-time also controls the on-time of the other electronic switches (ES,). to 7. Circuit according to one of claims I to b. characterized in that the switch-on and possibly also the switch-off pulses for the further electronic switches (ESt) are encoded in the command pulses (II ₁ ) and Ji sequentially over the common transmission link or can be transmitted simultaneously via other l-requcn / cn or modulation types. S. sound system according to claim 7, characterized in that the input and output pulses are made indistinguishable from other pulses by their duration. 9. A circuit according to claim I. characterized in that the Absch.iltsignal for the unstable electronic sounder (ESi) is a short one ■ ti differentiating the switch-off signal of a number output (I), ... / · ', ") generated pulse is such that it leads to a brief switch-off of the bistable electronic switch (I Si) when c-inc Kommandotas'.c (KT, ... KTh) is pressed. whereby V) the short-term or permanent switch-off country is used to reset the digital meter (H / K ,, h / v. Not shown). 10. Circuit according to claim 9, characterized in that that with each activation of a command v> dotasle (KT ... KIn) a different presetting of the counter (IiZK-,) corresponding to the command signal takes place in such a way that in the subsequent counting process the resizcounting results in a number of pulses that are exactly the desired ho coding of the relevant command signal is equivalent to, I I. Circuit according to Claim I. characterized in that the digital counter (IiZK,) is preceded in the period after the first pulse ηί takes place, which is sent to the periodic pulse generator (Ml l) in the \ cn number input. 12. Circuit according to one of the preceding Claims, characterized in that the scarf device for generating the command pulses (Fig. I) and / or the command keys (KT \ ... KT ») are present several times and act in parallel on the memory and decoding arrangement (Fig. 2), so that the same from different places Operating functions can be triggered. 13. Circuit according to one of the preceding claims, characterized in that the transmission link is fully or partially wireless.