DE2730380A1 - Electronic timepiece with alarm circuit - has two channels, each including counters and mode selection switch - Google Patents

Abstract

The electronic timepiece, including an alarm circuit has two channels for providing a normal time display and a secondary time display respectively, each channel including counters. A selection switch is used to select the display mode and is connected to function switches, which are coupled to the counters of the secondary time channel via the alarm circuit. Pref. the alarm circuit uses AND gates, one input of each of which is connected to a respective function switch the other input of each AND gate receiving the time signals. The AND gates are coupled via logic gates to the alarm means.

Description

Electronic clock with alarm device

The invention relates to an electronic watch with an alarm device according to the generic term of the main speech.

In general, in electronic watches with an alarm device, the Alarm or the alarm sound intermittently by a buzzer or a piezoelectric Ceramic link produced. The type of tone is created in different ways changes that a frequency or an interruption time is preselected.

In the case of the known electronic clocks of the type mentioned, there is a powerful one Alarm sound required, which is why it is necessary to have a high electrical current to feed, but such a powerful or loud alarm tone is not at the other alarm states or

Alarm conditions is desired.

A recently proposed electronic watch stands on further time channel available without counting for normal time; this electronic Clock also has a selectable counter for the remaining time or the remaining time Time, whereby a single alarm or a repeating alarm can be triggered. It is necessary to have a specific tone or key for each the alarm conditions to be provided.

Thus, it is desirable and not yet realized that a Loud or strong tone is provided for such an alarm, which leads to a specific Time is triggered, a weak tone for the counter paying the remaining time, a sound similar to a bird's voice for a single alarm, etc., thus an unpleasant one Sensing these alarm sounds is excluded and also a differentiation between different alarm states is possible.

The invention is based on the object of having an electronic watch To provide alarm device, which the above-mentioned disadvantages and difficulties eliminated and enables the generation of different alarm tones.

According to the invention, this object is achieved by the subject matter of the patent claim 1 solved. Further refinements of the invention emerge from the subclaims.

The electronic clock according to the invention with an alarm device enables thus the execution of several functions, in particular the generation of different ones Tone, with each function or Tones are selectable. The clock according to the invention is therefore able to through appropriate and intermittent Changing the time of the sound for different functions producing different ones To effect tones. It can also produce different tones by changing the control frequency can be executed.

In the case of the electronic watch according to the invention with an alarm device one of different alarm tones is preselected or set, in each case the tone or sound that is preferred for the respective function. Hence lets a distinction between certain alarm states as a result of different alarm tones or reach alarm sounds without further ado. Another advantage is seen in that the power consumption is reduced.

In the following a preferred embodiment of the invention will be based on of drawings to explain further features.

The figures show: FIG. 1 the electronic circuit of the invention Clock, and FIG. 2 shows a circuit example for the alarm control circuit.

The embodiment of the invention described below The watch is able to generate alarm signals for a remaining time or for the remaining time, a single alarm or to issue a repeating alarm. The circuit shown in FIG has an oscillator 1 for generating a time normal signal, a divider circuit 2 for emitting a 1 Hz signal by dividing the output signal accordingly of the oscillator 1 and a counter circuit connected to it on. The meter circuit consists of a second meter 3, which pays 1 Hz signals, a minute counter 4, which receives a minute signal, an hour counter 5, which receives and counts hourly signals, with components 1 to 5 being a form the first time counting circuit. With 6 there is another minute counter and with 7 one further hour counter referred to, the latter counter being a second time counter circuit form. The second counter circuit contains a counter for the remaining time and is capable of to generate a single alarm and a repeating alarm. The second time counter circuit consists of bidirectional counters, i.e. counters that count up and down. A display unit 11 selectively shows the contents of the first and second time counter circuits via a Switching device 8 on, the display, i.e. the input signals for the display unit 11 are converted into segment signals in a decoder circuit 9. A control circuit 10 emits this segment signal as a control signal.

In the circuit according to FIG. 1, a blocking switch SW1 is also on Selector switch SW2 for selecting a correction digit or one representing the correction Digit, and a setting switch SW for applying a setting pulse signal for the correction digit intended.

A mode switch SW4 has a function of selecting a first one Operating mode for time display and a second operating mode for time display or for Selection of the remaining time counter, a single alarm and a repeating alarm. Choices 12 and 13 to choose the correction digit or number select the relevant one Correction number by a pulse signal from switch SW2. More selector circuits 20, 21 and 22, which can also be referred to as function selector circuits a function of another or another Channel through the operating mode switch SW off. A mode selection circuit 19 shows the mode due to the switch SW4 at. A coincidence circuit 34 detects a content of 300 seconds in the remaining time counter and establishes a coincidence between the first time counter circuit and the second Timer circuit fixed. An Alorm trigger circuit 33 triggers an alarm when the coincidence circuit 34 emits a coincidence signal.

The operation of the electronic Clock with alarm device explained.

In the locked state, the lock switch SW1 is kept in the open state, whereby no selection of a correction number can be carried out. When the switch is SW1 is in the open state, it is not possible to select an operating mode.

Generated according to the ON and OFF operations of the switch SW the AND circuit 18 a pulse signal which the mode selection circuit 19 which consists of a T flip-flop circuit. When the sign at the exit Q of the selector circuit is 1 ", a time is displayed. When this signal is" O ", the second time is displayed.

The following describes how to correct a time or a time is set or executed.

The AND circuit 15 then outputs a pulse signal when the lock switch SW1 is held in the closed or ON state and when the Wöhischalter 5W2 is turned ON and OFF; this pulse signal is sent to the Switching circuits 12 and 13 created for the correction number, where the latter circuits consist of a ring counter, so that a correction number is selected when an output "1" has been generated.

When a minute digit is corrected or set, returns the selector circuit 13 has an output signal "1", a gate of a two-position switch or a two-state switch 40 becomes the ON state, see above that a set pulse is allowed through at a certain point in time. The setting impulse is controlled by an AND circuit 16 in response to ON and OFF operations of the set switch SW3 generated so that this setting pulse is applied to the minute counter 4. This Set pulse is also applied to the second minute counter 6, whereby a time is then set when the content of the second time counter circuit is pictured.

The following is the function selection in the inventive electronic Clock described. The ON and OFF operation of the switch SW4 creates an AND circuit 17 a pulse signal; the lock switch SW1 is turned on after playback or display the time of the second meter switching is kept in the ON state. So this becomes Pulse signal from AND circuit 17 to function selector circuits 20, 21, and 22 created, which consist of a ring counter.

, The function of a repeating alarm is then retained, when the selector circuit 20 supplies an output signal 1 ', during a single alarm function exists when the selector circuit 21 generates a "1" gong signal; the function of the remaining time counter is present when the output of the selection circuit 22 is "1". A time uniformity or time coincidence exists when there is a single polar function was selected so that the output of the coincidence circuit 34 Becomes "1"; this output signal "1" is sent to the alarm control circuit or trigger circuit 33 is applied so that an alarm is triggered. Thus, an AND circuit produces 32-a Output signal "1", which only triggers a single alarm to the second counter circuit postpone.

The AND circuit 32 then delivers no signal "1" when an alarm repetition function is executed, creating a repeating alarm sequentially with no reset is triggered.

The function of the remaining time counter is described below, i.

when the selection circuit 22 generates an output signal 1. A time setting the remaining time counter is carried out in that a correction signal accordingly the selector switch SW2, i.e. selected according to the actuation of this selector switch and a set switch is turned ON and OFF; the setting is made continued by a set pulse from AND circuits 26 and 29. At this point in time AND circuits 27 and 30 are in an unlocked state, so that they are brought to the OFF state; a count signal and a pulse signal for a counting down or a lowering of the number are then not generated.

The AND circuit 22 generates a clock signal by the lock switch SW1 is brought to the OFF state after timing adjustment is carried out, whereby a countdown operation of the second minute counter 6 is initiated. A transfer pulse signal of the second minute counter 6 is via the AND circuit 30 applied to the second counter circuit, i.e. to the second hour counter 7, whereby it is operated as a remaining time counter.

A control signal for a down counting operation of the remaining time counter is obtained as an output from the AND circuit 52 when in an inhibited State is held, this output signal of the Wöhischaltung 21 supplied will.

If the content of the remaining time counter is O o'clock, 00 minutes, 00 seconds is, this time is detected by the coincidence circuit 34 and it becomes a Alarm triggered by the trigger circuit 33. The AND circuit 32 then generates an output "1", which causes the second counter circuit, i.e. that of the counters 6 and 7 existing counter circuit is reset if an alarm signal is initiated became; a counting down or counting operation is interrupted, so that a Time setting is locked again.

A preferred embodiment of the alarm trigger circuit 33 is shown in FIG Fig. 2 shown. If a repeat alarm function is to be carried out, an output signal of the selection circuit 20 is applied to an AND circuit 61, so that an output of 8 Hz from the divider circuit 2 is selected. if a single alarm is to be generated, a pulse signal with a pulse duration of 4 of the period of one second selected or selected by an AND circuit 60

recorded.

When the remaining time counting function is performed, a 1 Hz signal is generated is selected and a control signal with the audible frequency of 2 to 4 kHz, which from the divider circuit 2 and then output as the output of the OR circuit 64 is, via an AND circuit 65 with a coincidence signal from the coincidence circuit 34 modulates, whereby a transistor 66 is controlled or

is switched through and a buzzer 67 sounds.

; Öe from Fig. 1, the outputs of the AND circuits 26, 27 fed via the element 26 to an input of the counter 6, a carry signal of the counter 6 reaches the counter 7 via the AND circuit 30 and the element 31. It can also be seen from FIG. 1 that the counters 4 and 5 are controlled via elements 40, 41 are, dio with the counter 3 or 4 on the one hand and the AND circuits 23, 24 on the other hand stay in contact.

The alarm trigger circuit 33 shown in FIG. 2 contains three AND gates 61, 62, 63, which are sent via element 64 and another AND gate 65 to the alarm Generating device are connected, which consists of a transistor 66 and a Buzzer 67, represented by a coil, is formed. One input of the AND circuits 61, 62, 63 is connected to the assigned function selector circuit 20 or 21 or 22, while the other input of the AND circuit 61 to the divider circuit 2, the second Input of the AND circuit 62 via an AND circuit 60 to the divider circuit 2 and the second input of the AND circuit 63 is also coupled to the divider circuit 2 are.

The AND circuit 65, as shown in FIG. 2, receives the output of the element 64 together with an output from the divider 1-device 2 and the coincidence circuit 34.

The elements 40, 41 are double or double switches, of which the switch 41 when correcting a minute digit as explained above the setting pulse and the hour transmission signal when generating a signal voi AND gate 24 selects; when the switch SW1 is broken, the wake-up circuits become 12, 13 by the output signal of the reset pulse generating circuit 14 provided. The circuit 14 then generates a reset pulse when the Switch SW1 is open.

The double switch 40 selects a correction pulse and a normal one Carry signal via an AND circuit 23; the double switch 41 selects against it A normal carry signal is output via an AND circuit 24. One to the circuits 20, 21, 22 connected OR circuit 70 controls the gate 32 in the ON or OFF switching state.

Elements 50, 51 and 25 shown in Figure 1 are inverters; with 27, 28, 31 and 64 are designated OR gates.

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Claims (3)

Patent claims Electronic clock with alarm device, with a Circuit for generating a normal time signal, a first channel for displaying the time, which contains a counter circuit that generates the partial signals of the normal time signals Switching pays, and with a second time channel to display a different time, each time kanol containing counters, and with several switching devices, d a it is clear that another switching device (SW1) for the selection of a certain operating mode is provided, which is connected to function Wuhlschaltungen (20, 21, 22) is connected and that the function selection circuits via an alarm trigger circuit (33) are connected to the counters (6, 7) of the second time channel. 2. Electronic clock according to claim 1, characterized in that the alarm trigger circuit (33) AND circuits (61, 62, 63) contains that an input of the UND circuits with one of the assigned Function selection (20, 21, 22) is connected, while the other input to the circuit (2) for Generation of the time normal signal is coupled to the outputs of the AND circuits (61, 62, 63) Via gate circuits (64, 65) with the device (66, 67) for generating alarms are connected. 3. Electronic clock according to claim 2, characterized in that a coincidence circuit (34) is connected to one of the gate circuits (65).