FR2482387A1 - INDICATOR DEVICE WITH PRE-POSSIBLE MODE OF POSSIBILITY - Google Patents

Abstract

THE INVENTION RELATES TO AN INDICATOR DEVICE WITH A PRE-ESTABLISHED POSSIBILITY MODE. ACCORDING TO THE INVENTION, A CERTAIN NUMBER OF INDICATOR ELEMENTS 1, AN ATTACK CIRCUIT 2, 3, A DOOR CIRCUIT 4 CONNECTED TO THE ATTACK CIRCUIT, A GROUP OF KEYS FOR PRE-ESTABLISHED OPERATION, AND A CONTROL CIRCUIT 8 INTERPOSED BETWEEN THE KEY GROUP AND THE DOOR CIRCUIT TO CONTROL THE ATTACK CIRCUIT, THE CONTROL CIRCUIT PRODUCING OUTPUT SIGNALS IN RESPONSE TO SIGNALS PROVIDED BY THE KEY GROUP, THE OUTPUT SIGNALS BEING APPLIED TO THE DOOR CIRCUIT FOR SWITCH ON AND OFF THE INDICATOR ELEMENTS. THE INVENTION APPLIES IN PARTICULAR TO RADIO-RECEIVERS.

Description

The present invention relates to an indicator device of the type to

  pre-established mode of possibility in

  a digital indication type radio receiver.

  In a digital indication type radio-receiver, a lamp indicating a preset mode of possibility is provided in a front panel of this radio-receiver to thereby notify a user it can preset or not. However, if the front panel is provided with many lamps to indicate various modes of operation, this is a problem because a user can be confused when reading these modes of operation. Moreover, in such a radio-receiver, it is necessary to keep a space large enough to receive

  lamps for various modes of operation.

  According to the present invention, in order to eliminate the disadvantages of such a radio-receiver. traditional above mentioned, there is provided an indicator device which comprises: an indicator means; operating means for manipulating the indicating means to indicate the received frequency and the like; a pre-established means; control means for turning on and off the indicating means

  when he is in indication condition in response to a.

  signal provided by the pre-established means.

  The invention will be better understood and other purposes, -

  features, details and benefits of this one

  will become clearer during the description

  explanatory text which will follow with reference to the appended schematic drawing given solely by way of example illustrating an embodiment of the invention and in which: the attached figure gives a block diagram of a mode of

realization according to the invention

  We will now describe the present invention in addition

  detail and with reference to the attached drawing.

  The reference numeral 1 designates a certain number of digital indication elements in segments which are well known, for numerically indicating a received frequency, the mark 2 designates a driving circuit of the segments for the indicator elements 1, the reference 3 designates a Digit driving circuit for elements 1, 4 denotes a gate circuit having an AND gate circuit 5 and a pulse generating circuit 6, 7 denotes a pre-established circuit having a diode array and a key group, and the mark 8 designates a control circuit, respectively. With this arrangement, the control circuit 8 produces

  normally a segment S output signal, synchronously

  me with a digital signal D, after converting a signal that is produced in response to the frequency received by a receiver, not shown, into a seven-segment decimal coded bit signal, for example, in order to thereby force the indicating elements 1 to indicate the frequency received by the segment driver 2 and the circuit

number attack 3.

  The structure above - being well known, it is not

  not in direct relation to the specific characteristic.

  of the invention, and therefore it will not be described

in more detail.

  On the occasion above, an output signal produced by the pulse generator circuit 6 is maintained at

a level H (high).

  On the other hand, the control circuit 8 applies an output signal 0 to the preset circuit 7 and accordingly, upon confirmation that a pre-set key from the key group of the circuit 7 has been pushed with an input signal. I produced by the pre-established circuit 7, the control circuit 8 produces a signal

  output P, and applies it to the pulse generating circuit.

  6. Thus, the pulse generator circuit 6

  produces an output signal P2 of a predetermined width.

  The signal P2 is applied to an indicator element corresponding to

  1 by the AND gate circuit 5 and the driver circuit

  number of digits3 to turn on and off the indi-

  to indicate the frequency received, which element is in its indication condition in response to the predetermined pulse width, so as to repeat, the switching on and off of the indicator element 0 When the operation pre-established by a user is complete, the control circuit operates to stop the production of the output signal (P1) to thereby maintain the signal at the output of the pulse generating circuit 6 at its normal level H and to bring back the element

  indicator 1 to its normal condition, indicating continuously

the received frequency.

  As described above, according to the invention, it is possible to indicate to a user a mode of possibility.

  pre-established by switching on and off an indica-

  to indicate a received frequency, thereby saving a lamp indicating a pre-established mode of

  which was provided in the front panel of a radio-

  traditional receiver, which reduces the production price0 Moreover, even if the front panel is equipped with various lamps, the ignition and extinguishing action

  of the display element allows more

  to recognize the indication of the pre-established mode of possibility, thus enabling him to avoid confusion over the knowledge of the modes of operation.

  as in a traditional device.

  Consequently, in the case where a microcomputer is used, where neither an AND gate nor a pulse generator circuit is required, it is possible to obtain

a more simplified structure.

  Of course, the invention is not limited to the embodiment described and shown which has been given by way of example. In particular, it includes all the means constituting technical equivalents of the means described, as well as their combinations, if they are executed according to its spirit and implemented in the context of protection as claimed.

Claims (2)

R E V E N D I C A T I 0 N S   Indicator device characterized in that it comprises: indicator means (1); maneuvering means (2, 3) for manipulating said average indicator to indicate the received frequency and the like; pre-established means (7); and   control means (8) for turning on and off the   said indicator means during an indication condition   in response to a signal applied by said pre-established means.   2.Device according to claim 1, characterized in that the aforesaid indicating means has a number of digital indication elements in segmern; in that the aforesaid control means comprises a means   impulse generator (6) and means for making   providing said pulse generating means in response to a signal provided by said preset means; and in that said pulse generating means is arranged to supply said operating means with a signal   pulse produced by said pulse generator means.