JPS63153196U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a circuit of an alarm clock according to the present invention, FIG. 2 is a time chart of circuit operation in the first embodiment, FIG. 3 is a diagram showing another embodiment of the lighting control circuit, and FIG. FIG. 4 is a time chart showing the operation of the lighting control circuit, FIG. 5 is a diagram showing still another embodiment of the lighting control circuit, FIG. 6 is a diagram showing another embodiment of the designation signal generation circuit, and FIG. Figure 7 is a time chart showing the operation of the designated signal generation circuit, and Figure 8 is a time chart showing the operation of the designated signal generation circuit.
9 is a diagram showing another embodiment of the counting circuit, FIG. 9 is a time chart showing the operation of the counting circuit, and FIG. 10 is a time chart showing the operation of the counting circuit.
The figure is an external view of an alarm clock according to the first embodiment, and FIG. 11 is an external view of an alarm clock according to another embodiment. 12...Reference signal generation circuit, 14...Oscillation circuit, 1
6... Frequency dividing circuit, 18... Clock circuit, 20... Timing circuit, 26... Time display section, 28... Alarm circuit, 30
...Coincidence detection circuit, 32...Alarm time setting circuit,
36...First flip-flop for alarm circuit, 4
0...Notification circuit, 42...Second correction switch, 44...Minute correction switch, 46...Hour correction switch, 52...Switch switching circuit, 62...Lighting control circuit, 64...AND circuit, 90...Specified signal generation circuit, 92...Specification Random number generation circuit for signal generation circuit, 94... Decoder for specified signal generation circuit, 106... Drive circuit, 108...
First display element, 110...Second display element, 112...
3rd display element, 114...determination circuit, 116...first AND circuit for determination circuit, 118...second AND circuit for determination circuit
AND circuit, 120... Third AND circuit for judgment circuit, 124... First flip-flop for judgment circuit, 1
26...Second flip-flop for judgment circuit, 128
...Third flip-flop for judgment circuit, 130...Second NOR circuit for judgment circuit, 132...Counting circuit, 13
4... Counter for counting circuit, 136... Inverter for counting circuit.

Claims (1)

[Claims for Utility Model Registration] A reference signal generation circuit that outputs a reference signal for timekeeping; a time display section that displays the time; a clock circuit that drives the time display section based on the reference signal; an alarm circuit that detects a set time and outputs an alarm activation signal; and an alarm circuit that generates an alarm notification sound in response to the output of the alarm activation signal, the alarm clock having a plurality of external switches; the same number of display elements as the external switch associated with the external switch; a lighting control circuit that sequentially outputs a lighting control signal in response to the output of the alarm activation signal; and a lighting control circuit that sequentially outputs the lighting control signal in response to the output of the lighting control signal. a designation signal generation circuit that repeatedly outputs a designation signal for sequentially specifying one of the elements for a predetermined period of time; a display element drive circuit that lights up the corresponding specific display element in response to the designation signal; and the designation signal. a determination circuit that outputs an operation determination signal only when an operation signal of the external switch corresponding to the specific display element that is lit during the output period is obtained; An alarm clock, comprising: a counting circuit that outputs an alarm stop signal to the alarm circuit by activating the alarm.