JPH01248089A - Digital electronic time-piece having astronomical function stored therein - Google Patents

Abstract

PURPOSE:To display the ages of the moon at the strict present time and arbitrary time, by providing an age-of-moon counter circuit for counting the age of the moon and a display circuit for displaying the age of the moon by a character or figure. CONSTITUTION:A time counter 3 counts h, min and s while a calendar counter 4 counts a data or weekday. An age-of-moon counter 5 counts the number of days elapsed from the moment when the visual yellow diameter of the moon becomes equal to that of the sun. The fraction of a time is counted as the decimal of a day. A data and time setting switch 6 sets an arbitrary time and a mode change-over switch 7 selectively changes over a usual time display state and an age-of-moon display state. However, at the time of a data and time set state, the age of the moon of said arbitrary time is displayed. By this method, the restriction of a display space from the aspect of a design is eliminated and the ages of the moon at the strict present time and arbitrary time can be displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the provision of astronomical information in a digital electronic watch.

[Conventional technology]

Conventionally, mechanical watches with a lunar phase display function have determined the approximate lunar phase at the current time based on the position of the moon printed on a rotating panel. Furthermore, in order to obtain the age of the moon at an arbitrary time, it was necessary to set the clock at the arbitrary time.

On the other hand, conventional digital electronic watches have not been provided with a moon phase display function.

[Problem to be solved by the invention]

However, the conventional technology has problems in that it is not possible to obtain the exact current time or the age of the moon at any time, and the display space is also limited. Therefore, the present invention is intended to solve these conventional problems, and its purpose is to provide accurate current time and moon phase at any time in a display space that is free from design constraints. It is in.

[Means to solve the problem]

The digital clock with a built-in astronomical function of the present invention is a digital clock that uses an electro-optical display device such as a liquid crystal to display the time, day of the week, or date, b) a lunar age counter circuit that counts the lunar age, and C) letters. or a display circuit that displays the age of the moon using a graphic, etc.; d) a year, month, day, and time setting switch for setting an arbitrary time; and C) a normal time display state and a moon age display state that can be selected by external operation. It is characterized by being equipped with a switch that can be changed over.

[Effect]

Since the present invention has the above configuration, it is possible to display the lunar age without any design restrictions, and the lunar age at any time can be provided without changing the current time by using the month, day, and time setting switch.

〔Example〕

Hereinafter, the present invention will be described in detail based on examples.

FIG. 1 is a block diagram of a digital electronic watch with a built-in astronomical function according to the present invention. 1 is an oscillation circuit using a crystal oscillator, 2 is a frequency dividing circuit, 5 is a time counter for hours, minutes, seconds, etc., 4
is a calendar counter that counts dates or days of the week. 5 is a lunar phase counter that counts the number of days that have passed since the moment when the ecliptic longitudes of the moon and sun became equal. Fractions of hours are counted as decimals of days. 6 is a date and time setting switch for setting an arbitrary time, and 7 is a mode changeover switch for selectively switching between a normal time display state and a moon phase display state. However, when the date and time are set, the age of the moon at the arbitrary time is displayed. Reference numeral 8 denotes an electro-optical display device such as a liquid crystal, which has display means 9 for identifying that it is a moon phase display.

With this configuration, the present invention can display the exact current time and the age of the moon at any time in a display space that is free from design constraints.

FIG. 2 shows the display state of a conventional mechanical watch having a moon phase display function. (α) is the age of 0 months. Showing the razor of Q, Cb
) indicates Mochizuki with a moon age of 14.8 (average value).

FIG. 6 is a diagram showing the display state of an embodiment of the digital electronic watch with a built-in celestial function according to the present invention, (α) is the display in the normal time display state, and (b) is the display state when the 32 mode changeover switches are displayed. The display is shown when the moon age is displayed, and in this example, the moon age is 14.8 days. (C) shows a state in which the year, month, day and time setting switch is used to set the year, month, day, and time of year 310, and the time is also set using the switch. After setting the time using the year, month, day, and time setting switches, press the mode changeover switch to display the set instantaneous age of the moon. In this way, the moon phase at any time can be displayed without changing the current time.

FIG. 4 is another example of the display according to the present invention. (α)
, Cb) both indicate the moon age display state by display bodies 41 and 42. In this way, the moon phase display and the like can be displayed in a display space free from design constraints. Note that the example given here is just one example, but the moon age is 0.0 (
It is also possible to display the ratio based on 14.8 (mochizuki) or 14.8 lunar age (mochizuki). Furthermore, the state of the tides can be recognized from the moon phase using the following relationship. Spring tides are lunar age α0 (razor) and lunar age 14.8 (Mochizuki, average value), and neap tides are lunar age 7.4 (waxing moon, average value) and lunar age 22.2 (
Waning moon/average value).

〔Effect of the invention〕

As described above, the present invention is a lunar calendar. The configuration of the clock and year/month/day/time setting switch allows display of the exact current time or the age of the moon at any time, and the mode selector switch allows for a display space that eliminates design constraints. It also has the effect of being able to obtain the tide status from the moon phase display.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a digital electronic watch with a built-in astronomical function according to the present invention. FIGS. 2(α) and 2(b) are plan views showing the display section of a conventional mechanical watch in which the moon phase is displayed. FIG. 5(α) is a plan view showing the display section in a normal time display state, and FIGS. 5(b) and 5(C) a display section in a moon age display state and a year, month, date and time setting state according to the present invention. FIG. 4(α)t(h) is a plan view showing an example of the display unit in the moon phase display state according to the present invention. 1...Oscillator circuit 2...Divide circuit 3...Time counter 4...
...Calendar counter 5...Moon age counter 6...Year, month, date and time setting switch 7...Mode selection switch 8.・
......Display device 9...Moon age display 31...Year, month, date and time setting switch 52.
...Mode selector switch 41...
・・・Moon age indicator 42・・・・・・Moon age indicator or above Applicant Seiko Epson Corporation Mother-in-law 1 color pack 2 ■ (a) Series 2 (2) (1)) Me 3 figure <
a) g3 eyes (b) Koma 3” 1 (C) series 4 eyes (a) $4 required (b)

Claims (1)

[Claims] (1) A digital watch that displays the time, day of the week, or date using an electro-optical display device such as a liquid crystal display, b) a counter circuit for counting the age of the moon, and c) displaying the age of the moon using letters or figures, etc. A display circuit, d) a date/time setting switch for setting an arbitrary time, and e) a switch for selectively switching between a normal time display state and a moon phase display state by external operation. A digital electronic clock with a built-in celestial function.