JPS61178690A - Electronic timepiece with timer - Google Patents

Abstract

PURPOSE:To obtain the constitution of a timer having the same operability as a dial/spring system, by controlling the display changing-over of timing information and timer information through a display change-over circuit responding to the information of a timer circuit. CONSTITUTION:When a rotary case bezel is rotated in the same way as a dial/spring type timer, an addition pulse Pu is outputted from the output terminal Q1 of a switch signal generation circuit 20 through switches 4a, 5a and an AND gate 24 is opened by RS type FF 23 of a timer control circuit 22 and the counter of a timer circuit 21 performs incremental counting to set a timer time. Whereupon, the zero output S0 of the circuits 21 distincts and a display change-over circuit 25 changes over the timing information from a timing circuit 12 to display the set timer tine information from the circuit on a display part 2. A timer residual time corresponding to decremental counting by the succeeding signal of an one-min cycle through the gate 24 is displayed and an alarm is issued by the output S0 from the circuit 21 at the time of time-up while display is returned to timing display through the circuit 25 and timer constitution having the same operability as a dial/spring system is obtained.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to an electronic timer with improved operability.

[Conventional technology]

Digital electronic watches equipped with liquid crystal display devices have become popular, but these digital electronic watches utilize the integrated circuit and display device to provide additional functions such as alarms, stopwatches, and timers. , Its functionality is appreciated.

However, the above additional functions have difficulty in operability depending on the function because the display device and operation members are also used as a clock function.In particular, the timer function is not easy to use, such as when housewives use it for cooking in the kitchen. However, the reality is that they are rarely used because they are less usable than the conventional dial/spring type.

[Problem that the invention seeks to solve]

In other words, the timer function must be easy to use, such as when housewives use it in the kitchen to measure cooking time, and if a dial/spring type timer is used,
It was easy to set by simply turning a dial.

On the other hand, a timer that is provided as an additional function of a digital electronic watch uses the display device and operation parts for the clock function, so when using it as a timer, first operate the function selection button to display the Switch the device from the time display to the timer display, then set the timer time using the digit selection button and numerical setting button, and then start it by operating the start button, and furthermore,
After using the timer function, the function selection button was used to return to the time display, which was too complicated for housewives to use easily.

The present invention has focused on the above-mentioned drawbacks, and aims to provide a timer configuration that is provided as an additional function of an electronic watch and has operability that is almost equivalent to that of a conventional dial/spring type timer. .

[Means for solving problems]

The electronic watch with a timer according to the present invention includes a timekeeping circuit, a timer circuit, and a digital display device, and a display switching circuit switches and displays information on the timekeeping circuit and information on the timer circuit on the digital display device. The electronic timepiece is characterized in that the display switching circuit is switched and controlled according to information from a timer circuit.

〔Example〕 The present invention will be explained in detail below with reference to the drawings.

The drawings all show the electronic timepiece according to the present invention; FIG. 2 is a front view showing the external appearance, FIG. 3 is a front view of the display section, and FIG. 1 is a block diagram showing the circuit configuration. .

In FIG. 2, 1 is an electronic clock, 2 is a display section consisting of a digital display device, and includes an hour display section 2a, a minute display section 2b,
It has a colon 2c and a calendar display section 2d.

Reference numeral 6 denotes a rotating bezel which is an operating member for setting the time of the timer, and is rotatably attached to the outer periphery of the electronic watch 1. The rotating bezel 6 has a plurality of protrusions (not shown) at the bottom thereof. It is provided.

4 and 5 are switch buttons disposed at positions corresponding to the protrusions of the rotating bezel 3, and the buttons 4 and 5 generate switch signals when pressed by the respective protrusions of the rotating bezel 3, When the rotating bezel 3 is rotated to the right, the buttons 4.5 are generated in the order, and when the rotating bezel 3 is rotated to the left, the buttons 5.4 are generated in the order.

The above is the external configuration of the electronic watch 1, and FIG. 2 shows the time display state, with the display section 2 displaying 12:30, the 25th, and Monday.

Next, the circuit configuration will be explained with reference to FIG.

, 10 is a reference oscillation circuit, 11 is a frequency dividing circuit, and 12 is a clock circuit. The clock circuit 12 is composed of a time counter 16 and a calendar counter 14.

4a and 5a are switches controlled by buttons 4 and 5 shown in FIG. 2; 20 is a switch signal generation circuit;
The switch signal generating circuit 20 includes a switch 4a operated via a button 4.5 by rotation of the rotating bezel 6;
The switch signals S, , S, of 5a are input, and the switch signals S, , S are input.

The number of times of light emission and the order of generation of the switch signals are determined, and if the order of generation of the switch signals is S, , S, the number of addition pulses Pu equal to the number of switch signals S4 is generated from the output terminal Q1, and the order of generation of the switch signals is S. ,,S, the output terminal Q2
Therefore, the number of subtraction pulses Pd equal to the number of switch signals S4 is generated.

21 is a timer circuit, and the timer circuit 21 is composed of a sexagesimal up and down counter, and receives the addition pulse Pu and subtraction pulse Pd supplied from the switch signal generation circuit 20 through an up terminal U and a down terminal, respectively. The timer time is preset by inputting .

Then, the preset timer time is subtracted and counted by the clock signal φC with a one-minute period supplied to the clock terminal CL, and when the subtraction of the preset timer time is completed, a time-up signal S0 is output from the zero detection terminal O.
Output.

22 is a timer control circuit, which is connected to a set-reset type flip-flop 26 (hereinafter abbreviated as R8, FF) and
It is composed of a gate 24.

The timer control circuit 22 receives the addition pulse P supplied from the switch signal generation circuit 20 by R8-FF23.
AND gate 24 by being set by u
R8-FF'2 is opened to allow the clock signal pc to pass through.
! , is reset by the time-up signal S0 output from the timer circuit 21, thereby closing the AND gate 24 and stopping the clock signal (zlc).

25 is a display switching circuit which converts the information of the clock circuit 12 supplied to the input terminal 11 and the information of the timer circuit 21 supplied to the input terminal 2 to a time-up signal S supplied to the control terminal C. Accordingly, a switching display is performed on the display section 2. 26 is an acoustic drive circuit; 27 is a buzzer; the acoustic drive circuit 26 receives a time-up signal S supplied from the timer circuit 21; The buzzer 27 generates an alarm sound.

Reference numerals 28 and 29 are pulse generation circuits for pulsing the time-up signal S0.

Next, the operation of the electronic timepiece having the above configuration will be explained. now,
Considering a state in which no timer time is set in the timer circuit 21, the time-up signal S is output to the zero detection terminal 0 of the timer circuit 21. is being output, the display switching circuit 25 is in the selected state of the input terminal I, and is displaying the information of the clock circuit 12 on the display section 2.

This state is the time display mode, and as shown in FIG.
12:30 is displayed on the minute display section a and the minute display section 2b, and the colon 2C is blinking depending on the second information.

The layer information of the Japanese calendar counter 14 is displayed on the calendar display section 2d as 25th and MO (Monday). Also, in this time display mode, the timer control circuit 22
When the FF 23 is reset by the time-up signal S0, the AND gate 24 is closed and the clock signal $2I
C is held in a stopped state.

Next, the timer operation mode will be explained.

If it is desired to perform a timer operation from the time display mode, the timer time can be set and the timer operation can be performed by simply rotating the rotating bezel 3 to the right in the same way as a conventional dial/spring type timer.

That is, when the rotating bezel 6 is rotated to the right, the switch signals are generated in the order of S4S by controlling the switches 4a and 5a via the buttons 4.5, as described above,
The signal is supplied to the switch signal generating circuit 2°. As a result, from the output terminal Q of the switch signal generation circuit 20, the addition pulse P
u is output, R8-FF23 of the timer control circuit 22 is set, the AND gate 24 is opened, and the timer circuit 21 is up-counted to set a tie of 1 hour. Then, when the setting of this timer time is started, the information of the timer circuit 21 is no longer zero, so that a zero detection signal S is generated.

disappears, and the display switching circuit 25 is switched to the selected state of the input terminal 2. As a result, the display terminal Q of the timer circuit 21
The set timer time is output and supplied to the display unit 2.

This state is the timer display mode shown in FIG. Specify display mode.

Furthermore, when setting the timer time using the rotating bezel 6, it is possible to set the timer time in 60 minute increments by turning it clockwise, and it is possible to set an arbitrary timer time by decreasing the already set timer time by turning it counterclockwise. It is also possible to return to the zero setting by turning it counterclockwise.

Then, when you set the desired timer time using the above method,
Thereafter, the timer circuit 21 starts counting down in response to the 1-minute period clock signal IJc supplied from the timer control circuit 22, thereby changing the timer time displayed on the minute display section 2b of the display section 2 in 1-minute steps. and decrease it.

At the same time as the timer circuit 21 finishes counting down, the time-up signal S0 is output from the output terminal O. This time-up signal S0 controls the display switching circuit 25 to return to the time display mode shown by the button in FIG.
23 and closes the AND gate 24, and further controls the acoustic drive circuit 26 via the pulsing circuit 29 to sound the buzzer 27 for a certain period of time to issue a time-up alarm.

The above is a series of timer operations, and after returning from the time display mode, the timer operation can be performed again simply by operating the rotating bezel 6.

Although this embodiment has shown a configuration in which the display switching circuit 25 is controlled by the output signal from the zero detection terminal of the timer circuit 21, the present invention is not limited to this, and the output signal is output only during the operation period of the timer. Any signal may be used as long as it is present, and for example, the output signal of R8-FF23 shown in FIG. 1 can be used.

〔Effect of the invention〕

As described above, according to the present invention, the timer display mode is called by the timer function setting operation, and the time display mode is returned to at the same time as the timer operation ends. This timer electronic watch eliminates the need for cumbersome operations such as calling up a timer function or returning to time mode by operating a function selection button, and can be used as easily as a familiar dial/spring timer. It became possible to provide.

[Brief explanation of the drawing]

The drawings all show the electronic timepiece of the present invention; FIG. 1 is a block diagram, FIG. 2 is a front view, and FIG. 3 is a front view of the display section. 1...Electronic clock, 2...Display section. 12...Clock circuit, 21...Timer circuit, 25...Display switching circuit.

Claims (1)

[Claims] In an electronic watch that includes a clock circuit, a timer circuit, and a digital display device, and in which a display switching circuit switches between displaying information on the clock circuit and information on the timer circuit on the digital display device, the display switching circuit comprises: An electronic clock with a timer that is switched and controlled according to the information in the timer circuit.