JPS5932954Y2 - digital electronic clock - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a digital display electronic timepiece equipped with a calculation function.

The present invention relates to a digital display electronic timepiece that overcomes the disadvantages of digital timepieces over analog display watches by adding a calculation function to the digital timepieces, thereby providing an effect greater than that of analog display watches.

The purpose of the present invention is that a digital display clock simply displays the time digitally, and unlike an analog display clock, it shows how many hours there are relative to the current time, such as a certain time (for example, 12 o'clock), or the current time. Although it is possible to quickly understand how many minutes have passed through pattern recognition, by adding a calculation function, even a digital display clock can be more effective than an analog display clock.

Another object of the present invention is to provide a calculation function to a small electronic watch such as a portable watch, such as a wristwatch, so as to speedily process life that is centered around numbers these days.

With recent improvements in semiconductor device manufacturing technology, complementary MO8ICs (hereinafter referred to as C-MO8ICs) have become extremely low in power consumption, and crystal wristwatches using this technology have a battery life of 1 to 2 years and are inexpensive. It has come to be commercially available.

It is preferable that the present invention effectively utilizes this C-MOS IC to drive the clock function and calculation function with low power consumption.

Conventional digital watches use display elements such as light emitting diodes or liquid crystal displays to show only the time.

In this case, the current time is clearly shown digitally and is very easy to read, but it is impossible to intuitively know the time interval between the current time and the past or future time. be.

The present invention eliminates these drawbacks by adding a calculation circuit to a watch with a digital display function, thereby providing the function of calculating time, that is, adding, subtracting, multiplying and dividing, within the same watch.

With analog display watches, pattern recognition allows only a rough sense of time, but with this invention, it is possible to know accurately.

Recently, with the development of transportation systems, the range of operation has expanded, and processing using not only time but also numbers has become extremely complicated, and portable calculators have become necessary.

The second purpose was to pursue the possibility of a watch and a calculator coexisting as a wrist computer, for example, and the C-MO
This has become possible through the use of SIC, etc.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is a relatively high frequency time standard pulse generator, 2 is a frequency divider for dividing the output signal of the pulse generator 1, and 3 is a display device 4. This is a liquid crystal drive circuit for driving.

5 is an input device for calculations, in addition to 0 to 9 decimal points, function input for giving commands, decimal, hexadecimal, decimal, etc. in the case of time calculations, or switching to perform daily calculations only in decimal. Contains equipment, etc.

Reference numeral 6 denotes a calculation circuit including an arithmetic circuit for calculation or a circuit for generating an output signal to be matched with the display drive circuit 3.

A changeover switch 7 selects whether the display device 4 displays time information or calculation information, and is linked to a power switch 8 for supplying current to the calculation circuit 6.

9 is a power source for driving and calculating this clock.

Next, this operation will be explained.

Figure 1 shows how the wires are connected to operate a clock; in this case, the current supplied from the power supply 9 flows through the pulse generator 1, the divider 2, the display drive circuit 3, and the display device 4 to display time information. .

If you change the changeover switch 7, the clock will switch to branch 2.
The display drive circuit is connected to the calculation circuit and displays calculated information.

A clock pulse (timing pulse) is required to perform the calculation, and this pulse can be the output of a standard pulse generator of a watch or a signal from an appropriate part of a frequency divider circuit.

Therefore, although a clock pulse generator for calculations has the drawback of relatively high power consumption, the fact that it is combined with a clock is a major advantage.

Regarding power consumption, the pulse generator 1 consumes 1 μW, the frequency divider 2 consumes 1 to 2 μW, the driver 3 consumes 1 to 2 μW, the display device 4 uses a liquid crystal display, it consumes 5 to 10 μW, and the arithmetic circuit consumes 10 μW.
0~4000μW, 8~15μW due to clock,
Although the arithmetic circuit does not work all the time, it is 100 to 40001
Become LW.

Therefore, one small battery, for example, an oxidation battery, has a voltage of 1.5V150.
If mAH is used, an average of 25 μW can be consumed, and the life of the watch will be 1 to 2 years.

If calculations are performed for 10 minutes a day, approximately 60 calculations are performed per year.
Even if the maximum power for calculation is 4000μW, this one battery is sufficient.Since the selector switch 7 and power switch 8 are linked, if you forget to turn off the power switch, the power is wasted when the calculation circuit is not needed. can be prevented from consuming the battery as a whole.
By using two clocks, it became possible to industrially produce a digital clock with a calculator that would not be a problem in daily life.

Although we have taken the case of a liquid crystal display device as an example, it is also possible to use other display elements such as light emitting diodes by adopting methods such as not turning on the display all the time but only turning it on when it is used.

The circuit elements can be large enough to fit inside the wristwatch by making them LSI, and input components for calculations can also be inserted by using small switches such as pressure-sensitive switches.

Therefore, it is fully possible to use small watches such as pocket watches, traveler watches, and small clocks.

Next, another embodiment of the present invention is shown in FIG.

Items with the same numbers as in FIG. 1 are omitted, and 3a is a screwdriver for a watch.

4a is a display device dedicated to a clock.

3b is a calculation driver, and 5b is a calculation display device.

8 is a switch for supplying current to the calculation circuit.

To explain this operation, the clock display is always lit, and there is also a separate dedicated display device for calculation information, and this dedicated display device lights up when calculations are performed.

Power consumption has been added to driver 3b and display 4b,
If the time required for calculation is small, it can be ignored.

There is also the possibility of incorporating a stopwatch function into the clock mechanism by interlocking the calculation circuit, and it is possible to make effective use of the calculator by adding a buzzer and providing a timer function.

As described above, the present invention effectively improves the shortcomings of digital clocks and is also effective as a clock that is compatible with modern times, and is also capable of calculation, and is not limited to what is shown in the examples. .

[Brief explanation of the drawing]

Figure 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a block diagram showing another embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] A display device that uses a battery as a power source and performs digital display using a time standard pulse generator, a frequency divider that divides the output signal of the time standard pulse generator, a liquid crystal, a light emitting diode, etc., and a display that drives the display device. A digital electronic watch consisting of a drive circuit, which is composed of a calculation circuit including an input device and an arithmetic circuit, and displays either a calculation mechanism connected to the power source via a power switch and time information or calculation information from the calculation mechanism. The selector switch is linked to the power switch, and the output signal of the time standard pulse generator or any frequency division of the divider is used as the calculation timing pulse of the calculation mechanism. A digital electronic clock characterized by using an output signal from a stage.