JPS6136958Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a preset electronic timepiece having a timer function that allows the time limit to be changed arbitrarily by presetting.

Conventional electronic clocks have a timer function that turns the switch on or off for a certain period of time from a certain time using a preset, and the timer function is used to automatically turn on and off radios, etc.
Recently, electronic watches have appeared that have the function of freely setting the on or off time in advance by setting the on and off times. However, when actually using this electronic clock, unless you input both the on time and off time in advance, the on or off state will not be automatically canceled after a certain period of time like in the past, so it is different from the conventional one. The operation at the time of input is complicated, and if an incorrect input is made, the ON or OFF state continues for a long time.

The present invention solves the above-mentioned drawbacks of the electronic clock and provides an easy-to-use preset type electronic clock.

The figure is a circuit diagram showing an embodiment of the present invention. In the figure, a reference signal generator 1 generates a reference signal using a crystal oscillator 11 and supplies an output to a timing circuit 12 and a counter 2. The timing circuit 12 generates timing signals _T1 to _T3 , and the counter 2 counts the output of the reference signal generator 1 and outputs a pulse signal every minute. This pulse signal (minute signal) every minute is given to the time signal generator 3 and time counters 41, 42, and 43. The time signal generator 3 counts and stores the minute signals to generate hour and minute time signals, and its output is given to the display circuit 6 via the matching circuit 5 and gate G. A four-digit display is performed.

7 is an input section, which has, for example, numeric keys from 0 to 9 and AM and PM designation keys in case of 12-hour display.
Time limit memory 9 via changeover switches 81 and 82
Key signals are given to 1, 92, and 93. Each of the time memory devices 91, 92, and 93 includes a first memory device 911, 921, and 931 that stores set time data, and a second memory device 912, 92 that stores time limit data.
There are 2,932 settings, each of which can be preset separately. The outputs of the first memory devices 911, 921, 931 are the AND gates A91, A9 of the first gate circuit.
2, is led to the coincidence circuit 5 via A93,
When the content of the time signal generator 3 matches, the output is output from the AND gates A1, A2, A3 of the second gate circuit.
given to. Also, and gate A91, A9
2. The output of A93 is sent to the display circuit 6 via gate G.
It can also be given to display the contents.

The outputs of the second memories 912, 922, 932 and timing signals _T1 to T3 are given as inputs to the AND gates A1, A2, and _A3 , and are sequentially selected by the timing signals _T1 to _T3 . Therefore, at the time of output from the coincidence circuit 5, the second memory 912, 922,
932 contents to time counters 41, 42, 43
Set to The time counters 41, 42, and 43 are configured as down counters that subtract the set contents based on the minute signal from the counter 2, and the flip-flops F1, F2, and F3 are configured based on the outputs of the AND gates A1, A2, and A3. is reset by the "0" output of the time counters 41, 42, 43, and the relay switches R1, R2,
Turn R3 on or off.

In the above circuit, the power supply is omitted.

In the above circuit, the output counter 2 of the reference signal generator 1 converts it into a minute signal, the time signal generator 3 outputs it as a time signal, and the normal display circuit 6 displays the time. In the case of time adjustment, the second signal from the counter 2 is supplied to the time signal generator 3 through a connection line (not shown) to correct the fast forwarding of the time.

When performing a timed operation, first, the changeover switches 81, 82 are designated to select one of the time memory devices 91, 92, 93, and the time and time limit are preset by a key signal from the input section 7. For example, in the first memory 911 of the time memory 91
AM.7:00 and 30 minutes are preset in the second memory 912. In the case of the other time limit memories 92 and 93, the changeover switches 81 and 82 are similarly changed over, and the input section 7 is used to preset them.

After presetting, the selector switches 81 and 82 are turned to the OFF position, or input from the input section 7 is stopped to prohibit input. First storage device 911, 921, 93
The contents of 1 are AND gates A91, A92, A93
is sequentially switched and applied to the matching circuit 5, and is constantly compared with the contents of the time signal generator 3.
When the contents match, an output is generated from the matching circuit 5, and the output is given to the AND gates A1, A2, and A3, but since it is synchronized with the timing signals _T1 to _T3 , only the corresponding AND gate is opened. . For example, if the contents of the first memory 91 match,
That is, at 7:00 AM, the output of the coincidence circuit 5 is generated only when the timing signal T ₁ is present, only the AND gate A 1 is opened, and the contents of the second memory 912 are led to the time counter 41 .

The time of 30 minutes in the above example is input to the time counter 41, and at the same time, the flip-flop F1 is set Q and the relay switch R1 is turned on. The time counter 41 is set to 1 by the minute signal of the counter 2.
It is subtracted every minute, and becomes 0 after 30 minutes to reset flip-flop R1 and switch relay switch R.
Turn off 1. In other words, it turns on at 7:00 AM,
It closes 30 minutes later at 7:30 AM. Relay switches R1 and R2 are similarly turned on and off depending on the contents of other time limit memories 92 and 93.

When operating the time limit memory 1 at another time, rotate the changeover switch 81 to operate the first memory 91.
Select 1 to preset the new time. For example, you can change 7:00 AM to 8:30 PM.
The time limit is stored as is in the second storage device 912 and remains at 30 minutes. If you want to change the time limit, you can change it by specifying the changeover switch 82 and re-entering the input through the input section 7. However, in actual use, in most cases, the same time limit is sufficient, and the second The contents of the storage device 912 are rarely changed. For example, when the time limit memory 91 is used to turn on and off a cassette tape recording/playback device, the cassette tape that has a single-sided operation time of 30 minutes is mainly used, so the recording/playback time may always be 30 minutes, and the time limit There is no need to change the time.

The above example is for setting the on time, but the relay switches R1, R2, and R3 are connected to the flip-flop F.
The off time can be set by activating the reset outputs of flip-flops F1, F2, and F3, and any one can be selected by switching the outputs of flip-flops F1, F2, and F3.

Also, in the above example, 1 relay switch has 1
Although one time memory device is associated with the relay switch, multiple time memory devices can be associated with each other to operate the relay switch many times. In that case, add another AND gate to separate the output of the added time memory and the output of the conventional one, and use a timing signal other than the above timing signals T ₁ to T ₃ for its opening. The timing signal must be ORed with the conventional timing signals of the AND gates A1, A2, A3, which are the inputs of the corresponding time counters 41, 42, 43.

As described above, the present invention stores a plurality of set time data and time limit data, sequentially reads out the stored set time data using a timing signal,
By comparing the current time with the current time and if it matches, the corresponding predetermined switch among the multiple relay switches is turned on, and the switch is turned off when the memorized time limit elapses, thereby controlling the multiple switches. In addition, the input operation is very simple as it mainly changes only the set time of the memory device, and the time limit can be changed as necessary, so it is not always on or off at a fixed time like in the past. It can be used as a multi-purpose electronic watch without the inconvenience of being canceled.

[Brief explanation of the drawing]

The figure is a circuit diagram showing an embodiment of the present invention. In the figure, 1 is a reference signal generator, 2 is a counter, 3 is a time signal generator, 5 is a coincidence circuit, 7 is an input section, 41, 42, 43 are time counters, 9
1, 92, and 93 are time memory devices.

Claims (1)

[Scope of utility model registration request] In a preset electronic clock that sets the on or off time of a switch in advance, there is a reference signal generator that generates a reference signal with a fixed cycle, and a timing circuit that generates a predetermined timing signal from the reference signal from the generator. a counter that counts the reference signal from the generator and outputs a minute or second signal; a time signal generator that counts the counter output and outputs a time signal of hours and minutes; and an input that generates a key signal. a plurality of memory devices for storing a plurality of set time data and time limit data according to a key signal from an input section; and a plurality of memory devices for sequentially reading out set time data from the plurality of memory devices based on a timing signal from the timing circuit. a first gate circuit connected to each output of the storage device; a coincidence circuit that compares the set time data read from the storage device with the time of the time signal generator; and the timing signal and the storage device. a plurality of second gate circuits to which the time limit data and the output of the matching circuit are respectively input; a plurality of time counters to which the time limit data is set by the output generation of the gate circuits; 1. A preset type electronic timepiece comprising a plurality of flip-flops that are set and reset by the output of the time counter, and a plurality of relay switches that are controlled on and off by the output of the flip-flops.