JP3080103B2 - Electronic clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic timepiece having a pointer display device for indicating a timepiece with a pointer and a light-receiving electro-optical display device for optically displaying data.

[0002]

2. Description of the Related Art An electro-optical display device such as a liquid crystal display device is provided in order to increase the number of functions of a pointer-type electronic timepiece. The electro-optical display device has a date, an alarm time, a stopwatch measurement time, and a schedule. Information and information such as telephone number information of a data bank are switched and displayed. Such a pointer-type electronic timepiece has a drawback that its appearance is impaired because the electro-optical display device is exposed even when it is not necessary to display information on the electro-optical display device. In view of this point, for example, Japanese Patent Laid-Open No. 1-242987
As shown in the figure, an electronic timepiece is provided with a lid or a shutter plate for opening and closing the display window of the dial, and only when displaying information on the liquid crystal display device, the pulse motor is driven by a switch operation to move the shutter plate. It is considered.

[0003]

However, the shutter plate in the above electronic timepiece has a disk-like shape with a hole formed at a predetermined position, and the hole of the shutter plate is made to coincide with the display window of the dial by operating a switch. Only to expose the display device, it is necessary to provide a shutter plate, a motor, a transmission gear, etc. just to hide the display device,
It is useless considering the cost and size. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electronic timepiece in which the shutter plate for hiding an electro-optical display device and a drive mechanism thereof are effectively used.

[0004]

The present invention achieves the above object.
In order to achieve this, a dial with a display window
A pointer rotating on the dial, and a display formed on the dial
Electro-optical display device provided under the window and
Moon picture and sun mark are provided and the back side of the dial
Rotating shutter plate that rotates with the dial to open and close the display window of the dial
And digital display mode, moon age display mode and sun position
Mode selection switch means for selecting a display mode;
When the digital display mode is selected, the shutter
A first shutter plate shifter for moving the plate to open the display window;
Motion control means and means for obtaining moon age data and sun position data
And when the moon age display mode is selected,
Rotate the shutter plate according to the moon age data and
The second variable the amount of the moon picture exposed from the window
Shutter plate movement control means, and the sun position indicating mode is
When selected, the solar position data
Rotate the shutter plate to expose it from the display window.
Movement of the third shutter plate to change the position of the sun mark
Control means.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be specifically described.Constitution  FIG. 1 shows a circuit configuration of the present embodiment. sand
That is, in the present embodiment, other circuit units,
It is configured to connect. CPU 1 is sent
Processes and processes the data, sends it out, and sends signals to each circuit.
And a circuit that controls them. Oscillation circuit 2
Is a circuit that constantly sends out a signal of a certain frequency.
You. The frequency dividing circuit 3 converts the signal from the oscillation circuit 2 to a predetermined frequency.
And divide it into the clock circuit 4 and the motor drive circuit.
This is a circuit section to be sent to the road 5. The clock circuit 4 is
The signals from the frequency dividing circuit 3 are counted, and the current time T and
A circuit for obtaining the date D of the day and sending them to the CPU 1
It is. The motor drive circuit 5 receives the signal from the frequency divider 3
And a circuit for driving the pointer driving step motor 6.
In addition, the stepper motor 6 for driving the hands includes a motor driving circuit 5
Is driven to rotate and the rotational force is transmitted through the wheel train mechanism 7 to the pointer
8 and the hands 8 are operated.

[0006] The RAM 9 is controlled by the CPU 1 to
This is a circuit unit that stores data from U1 and sends the stored data to CPU1. The mode register M in the RAM 9 is a register for designating a mode.
Is set, a normal mode in which a display window 22a described later is closed by the shutter plate 14 is designated, and when 1 is set, the shutter plate 14
Using a picture of the sun printed and displayed on the upper surface, that is, a sun mark 14b described later, a sun position display mode for displaying the position of the sun is designated, and when 2 is set,
When the display window 22a is opened, a liquid crystal display device 16 to be described later can be seen through the display window 22a, a digital display mode for displaying various digital information is designated, and when 3 is set, Using the picture of the moon printed on the upper surface of the shutter plate 14, that is, a moon mark 14c described later, a moon age display mode for displaying the moon age is designated.
The display data designation register N is a register for designating the type of digital information to be displayed on the liquid crystal display device 16 in the digital display mode. When 0 is set, the time is designated, and when 1 is set. Specifies the date, if 2 is set, the age of the moon is specified, and if 3 is set, the city required for calculating the sunrise and sunset times is specified. The shutter plate position register SR is a register in which a step value indicating the rotational position of the shutter plate 14 (one round is 120 steps) is set. In order to display the position or the age of the sun at that time on the display window 22a using the sun mark 14b or the moon mark 14c, the register P uses the step value set in the shutter plate position register SR at that time. This register is used to set a step value (hereinafter referred to as a display control step value) indicating how many steps should be further increased, that is, how many steps should the shutter plate 14 be rotated clockwise. The switch unit 10 includes switches SM and SN described later, and when any one of them is operated, a corresponding switch input signal is sent to the CPU.
1 is a circuit section to be sent out.

The motor drive circuit 11 receives the forward rotation signal R or the reverse rotation signal L from the CPU 1 and drives the shutter drive step motor 12 forward (rightward) or reversely (leftward) by a predetermined angle each time. The rotation of the shutter driving step motor 12 is given to the shutter plate 14 via the train wheel mechanism 13 to rotate the shutter plate 14 forward (right) or reverse (left). Note that, in this case, the shutter plate 14 receives the normal rotation signal R from the CPU 1.
Alternatively, each time the reverse rotation signal L is transmitted, the rotation is made by 3 ° (ie, 360 ° / 120 steps) in the forward or reverse direction. The display drive circuit 15 is a circuit that starts driving by a display start signal DS from the CPU 1 to display data from the CPU 1 on the liquid crystal display device 16 and stops the operation in response to a display stop signal DE from the CPU 1. is there.

FIG. 2 shows the structure of the shutter plate 14, the shutter plate 14, the liquid crystal display 16 and the display window 2.
It is a figure which shows the positional relationship of 2a (it is the figure in the state where the pointer and the dial were removed for easy understanding). That is,
The dial 2 is fixed to a third gear barrel shaft 44a, which will be described later, inside the housing 24, and rotates with the rotation of the third gear barrel shaft 44a.
2 (not shown), the shutter plate 14 which rotates in parallel with the shutter plate 14 has a substantially disk shape, and a portion near the outer periphery thereof has a center around the third gear cylinder shaft 44a. 9 corners
A wide arc-shaped notch 14a of 0 ° is formed, and a month mark 14c and a sun mark 14b are printed and displayed at 45 ° from left and right sides of the notch 14a. Further, the liquid crystal display device 16 is disposed so as to be overlapped with the notch portion 14a of the shutter plate 14 so as to expose the entire surface. In the same figure, the positional relationship between the liquid crystal display device 16 and the display window portion 22a and the display are shown. In order to show the shape of the window 22a, the opening position and the shape of the display window 22a are indicated by a dashed line on the liquid crystal display device 16. That is, the display window portion 22a overlaps the liquid crystal display device 16, has an arc shape slightly smaller than the liquid crystal display device 16, and has left and right end portions in a semicircular concave shape. The rotational position of the shutter plate 14 is rotated by 180 ° from the state shown in FIG. 2 and the liquid crystal display device 16 is completely covered by a portion on the opposite side of the cutout portion 14a. The number of steps of the shutter plate position register SR is set to 0, and thereafter, the number of steps is increased by 1 each time the shutter rotates in the positive (right) direction by 3 °.

FIG. 3 is a sectional view of a main part of this embodiment. That is, in this embodiment, a hand drive unit 25 for driving the hour hand 20 and the minute hand 21 and a shutter rotation drive unit 26 for rotating the shutter plate 14 are provided in a housing 24 in which the dial 22 is fixed by the pins 23. I have. First,
Describing from the pointer driving unit 25, between the main plate 27 and the wheel train receiver 28, the pointer driving step motor 6, the intermediate wheel 30, the second wheel 31 and the third wheel 32 are rotatably mounted. , The rotor of the stepper motor 6 for driving the pointer 3
3 meshes with the intermediate wheel 30, the intermediate wheel kana 34 and the second wheel 31
The shaft 31a of the second wheel & pinion 31 is
7. The minute hand 21 is attached to the tip of the dial 22 through the through-holes formed in the receiving plate 35 and the dial 22 and projecting onto the dial 22. The second wheel & pinion 36 of the second wheel & pinion 31 meshes with the third wheel & pinion 32, and the third wheel & pinion 37 protrudes above the main plate 27 and meshes with the hour wheel & pinion 38. The hour hand 20 is attached to the shaft 31a of the second wheel & pinion 31 so as to be rotatable, protrudes above the dial 22 and has a leading end. On the other hand, in the shutter rotation drive unit 26, the receiving plate 35 and the train wheel
A first gear 40 is engaged with a rotor pinion 39 of the shutter driving step motor 12, and a first gear pinion 41 is provided between the receiving plate 35 and the main plate 27. And the second gear 42 attached to the second gear 42. The second gear pinion 43 of the second gear 42 projects above the receiving plate 35 and the third gear 44
And the third gear cylinder shaft 44a of the third gear 44
The shutter 38 is rotatably mounted on a cylindrical shaft 38a of the hour wheel 38, and a shutter plate 14 is mounted on a tip portion thereof. Note that the liquid crystal display device 16 has interconnectors 45 and 46.
Thus, the circuit board 47 is electrically connected to the LSI 48 on the circuit board 47, and the circuit board 47 is fixed to the housing 24. When the notch 14a of the shutter plate 14 comes to a position above the liquid crystal display device 16 due to the rotation of the shutter plate 14, the display window 22a and the notch 14
The liquid crystal display device 16 can be seen through a.

[0010]motion  Next, the operation of the present embodiment configured as described above will be described.
I do. FIG. 4 is a general diagram showing an outline of the operation of the present embodiment.
It is a flowchart. That is, in step S1,
Check if there is a switch input, and if there is a switch input
The switch processing (step S2) corresponding to the
After execution, the process proceeds to step S3, but there is no switch input.
If not, go directly from step S1 to step S3.
Proceed to. Then, in step S3, the mode register
M is set to 1 and it becomes the sun position display mode
Is in the sun position display mode
Use the sun mark 14b on the shutter plate 14
Position display processing for displaying the sun position on the display window 22a
(Step S4), and then to Step S5
Proceed, but when not in sun position display mode,
The process proceeds directly from step S3 to step S5. The
In step S5, 3 is set in the mode register M and
To determine if it is in the moon age display mode,
Is set to the month mark 1 on the shutter plate 14
Age display that displays the age on the display window 22a using the 4c
The process is executed (Step S6), and then Step S7
If the display is not in the moon age display mode,
The process proceeds directly from step S5 to step S7. Steps
At S7, 2 is set in the mode register M and the digital
Judge whether the display is in the display mode.
Is open, the display window 22a is opened and the liquid crystal display device is opened.
16 displays the data designated at that time.
After executing the display process of the display unit (step S8),
Return to step S1, but not in digital display mode.
If not, return directly to step S1 from step S7.
You.

FIGS. 5, 6, 7 and 8 show details of the switch processing (step S2), the sun position display processing (step S4), the moon age display processing (step S6) and the digital display section display processing in FIG. 9 is a flowchart shown in FIG. 9, and FIG.
2A shows the transition of the display. Hereinafter, operations in various states will be described with reference to these drawings.

(A) Operation in the sun position display mode For example, now, the mode register M is set to 0 and the mode is the normal mode. As shown in FIG. 14 is closed by a portion opposite to the notch 14a (see FIG. 2), that is, the shutter plate position register SR is set to 0. When the switch SM is operated in this state, it is detected in step S10 of the switch process (FIG. 5), the value of the mode register M is increased by 1 to 1 to set the solar position display mode (step S11), and the mode register M Is not greater than 3 (step S12), furthermore, it is confirmed that the value of the mode register M is not 0 (step S14), and the value of the mode register M is already 1 in step S20. It is determined that the mode is the sun position display mode, and the process proceeds to the next step S21. In step S21, the current sun position is calculated based on the data (data relating to sunrise, sunset, etc.) stored in the RAM 9 in advance and the time data T from the clock circuit 4, and the calculation result is described above. And the obtained display control step value is stored in a register P.
(Step S22). Thereafter, a signal is sent to the motor drive circuit 11 to rotate the shutter drive step motor 12 by one step, rotate the shutter plate 14 rightward by 3 ° (step S23), and set the shutter plate position register SR Is increased by one, that is, 1 (step S24). Then, in step S25, the step value of the shutter plate position register SR is not the value obtained by adding the display control step value of the register P to 15 yet. And then step S
Returning to 23 (note that the value of the shutter plate position register SR is 15 means that the shutter plate 14 rotates clockwise by 45 ° (= 15 × 3 °) more than in the normal mode,
The concave portion at the left end of the display window 22a and the sun mark 14b of the shutter plate 14 overlap, indicating that the sunrise is being displayed). Hereinafter, the step value of the shutter plate position register SR is obtained by adding the display control step value of the register P to 15 and the current sun position is displayed on the display window 22a.
Are repeated until the shutter plate position register SR reaches the above step value and, for example, the sun position at that time is displayed on the display window 22a as shown in FIG. 9 (b). When the display has been made, it is detected in step S25, and the switch processing ends.

Thereafter, the process proceeds to step S3 in FIG. 4, and unless the switch is operated, it is determined that 1 is set in the mode register M and the sun position display mode is set, and the sun position display processing is performed (step S4). And execute step S
The process of returning to step S3 via 5, S7 and S1 is repeated. In this case, the sun display process in step S4 is substantially the same as steps S21 to S25 in the above-described switch process as shown in FIG. 6, and the shutter plate 14 is moved in accordance with the change in the sun position over time. It is a process for rotating and displaying the instantaneous sun position on the display window 22a. Note that the sun display process of FIG. 6 is slightly different from the above-described steps S21 to S25 when the step value of the shutter plate position register SR becomes 45, that is, 135 ° (= 45 × 3 °) as compared with the normal mode. ), The sun mark 14b overlaps the right end recess of the display window portion 22a to display the sunset, and the reverse signal L is continuously sent to the motor drive circuit 11 for 30 steps. The shutter plate 14 is rotated left (reverse) by 30 steps, that is, 90 °, and the display state of the display window portion 22a is returned to the above-described display state at the time of sunrise, that is, the shutter plate is prepared for the next day's sunrise. The step value of the position register SR is returned to 15 (steps S59 to S61).

To switch from the sun position display mode to the digital display mode, the switch SM is operated. At this time, the operation is detected in step S10 of FIG. 5, and the digital display mode is performed by setting the value of the mode register M to 2 which is larger by 1 (step S11), and it is determined that the value of the mode register M has not exceeded 3 yet. (Step S1
2) After passing through steps S14 and S20, it is determined in step S30 that 2 is set in the mode register M and the digital display mode is set, and the motor drive circuit 11
And the shutter drive step motor 12 is rotated by one step to rotate the shutter plate 14 rightward by one step, that is, 3 °, and the value of the shutter plate position register SR is stored to store the fact. Plate position register SR
Until the notch 14a of the shutter plate 14 comes over the liquid crystal display device 16 and the liquid crystal display device 16 is completely exposed. Repeat (Steps S31 to S3
3). And the value of the shutter plate position register SR is 60
When the above state is reached, it is determined in step S33
, And sends a display start signal DS to the display drive circuit 15 to bring the liquid crystal display device 16 into a displayable state (step S
34). Thereafter, the process proceeds to step S8, that is, the digital display section display processing in FIG. 8 through steps S3, S5, and S7 in FIG. 4, and data corresponding to the value set in the display data designation register N at that time is displayed on the liquid crystal display. Displayed on device 16. That is, when 0 is set in the display data designation register N, the time data T from the clock counting circuit 4 is displayed, for example, as shown in FIG. 9C (steps S75 and S76), and 1 is set. , The date data D from the clock circuit 4 is displayed (steps S77 and S78), and when 2 is set, the age is displayed (steps S79 and S80) and 3 is set. If yes, the city designated to calculate the sunrise and sunset is displayed (step S81).

In order to switch the display data type to another one in the digital display mode, it is necessary to turn on the switch SN until data of a desired data type is displayed on the liquid crystal display device 16 while viewing the liquid crystal display device 16. Repeating the operation,
In this case, every time the operation is performed, the operation is performed in step S in FIG.
45, it is confirmed that 2 is set in the mode register M and the digital display mode is set (step S46), and then the value of the display data designation register N is set between 0 and 2, In order, cyclically increase the value by one (steps S47 to S49).
After performing a series of steps, the process proceeds to the above-described digital display section display processing of FIG. 8, and data corresponding to the value of the display data designation register N is displayed (steps S75 to S75).
S81).

(C) Operation in the age display mode When the mode is switched from the digital display mode to the age display mode, the switch SM is operated. In this case, the operation is detected in step S10 in FIG. Is set to 3 which is larger by 1 to set the moon age display mode (step S11), and steps S12, S14,
The process proceeds to step S35 through S20 and S30, and sends a display stop signal DE to the display drive circuit 15 to send the display stop signal DE to the liquid crystal display device 16.
Is stopped, and in step S36, the data stored in the RAM 9 in advance and the clock
Of today is calculated based on the date data D from.
In step S37, the calculated today's age is displayed on the display window 2 using the month mark 14c of the shutter plate 14.
2a (the state in which the month mark 14c overlaps the left end of the display window 22a, ie, the shutter plate position register SR
Is the state of the new moon, and the state where the month mark 14c is displayed in the center of the display window 22a, that is, the state where the value of the shutter plate position register SR is 90 is displayed as a full moon. How many times, that is, how many steps should the shutter plate 14 be rotated clockwise from the state where the month mark 14c overlaps the left end of the display window 22a as described above, that is, the state where the value of the shutter plate position register SR is 75? Is calculated from the above age and set in the register P. Thereafter, the value of the shutter plate position register SR is set to 75 in the register P.
Is the value obtained by adding the display control step value set to
Until the moon age of the day is displayed on the display window 22a by the month mark 14c, the normal rotation signal R is transmitted to the motor drive circuit 11.
And the shutter drive step motor 12 is set to 1
The operation of rotating the shutter plate 14 rightward by one step, that is, 3 °, by the amount corresponding to the step and repeating the operation of increasing the value of the shutter plate position register SR by 1 to store the effect is repeated (steps S38 to S40). . Then, the value of the shutter plate position register SR is set to 75 in the register P.
Is added to the display control step value set in
When the age of the day has been displayed on the display window 22a, it is detected in step S40, and the switch process ends. For example, if the age of the day is a full moon, a display as shown in FIG. 9D is made on the display window 22a. After the above process, a series of processes (step S3 in FIG. 4,
The age display process of step S6 is executed after step S5), and the process returns to step S1 via step S7. Thereafter, the above age display process is repeated unless a switch is operated (steps S1, S3, S5, S7). , S1). In this case, as shown in FIG. 7, the moon age display processing in step S6 is performed in steps S36 to S4 in the switch processing described above.
0, and when the date changes with time and the date data D changes, the shutter plate 1
4 is rotated to display the daily age on the display window 22a sequentially. FIG.
Is slightly different from the above steps S36 to S40, when the step value of the shutter plate position register SR reaches 105, that is, when the previous month ends and a new month starts, the next new month starts. If it has been reached, it is detected in step S69, the reverse rotation signal L is continuously sent to the motor drive circuit 11 for 30 steps, and the shutter plate 14 is rotated left (reverse) by 90 degrees (step S69).
D70), the value of the shutter plate position register SR is returned to 75 (step S71).

To return from the age display mode to the normal mode, the switch SM is operated. In this case, the operation is detected in step S10 in FIG.
Is increased by 1 to 4 (step S11). Thereafter, it is determined that the value of the mode register M exceeds 3 (step S12), and then the mode register M is set to 0. The normal mode is set (step S1
3). In step S14, it is detected that the value of the mode register M is already 0 and the mode is the normal mode, and the step value of the shutter plate position register SR is set to 1
Until the display window portion 22a is completely closed by the shutter plate 14, the forward rotation signal R is sent to the motor drive circuit 11 to rotate the shutter plate 14 rightward by one step, that is, 3 °. Is repeated to increase the value of the shutter plate position register SR by 1 (steps S15 to S17). Then, when the step value of the shutter plate position register SR becomes 120 and the display window 22a is in the above state, it is detected in step S17, and the value of the shutter plate position register SR is returned to 0 (step S17). S18). By the above processing, the display window 22a is completely closed by the shutter plate 14, as shown in FIG. 9A, and the display using the display window 22a is not performed. Only the time is displayed. The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the present invention.

[0018]

According to the present invention, a picture of the moon and a mark of the sun are printed and displayed on the upper surface of the shutter plate, and the moon age data is displayed.
And means for obtaining sun position data is provided, and the shutter plate is rotationally driven according to the moon age data by the means, and the amount of the picture of the moon exposed from the display window is changed to indicate the moon age , Shutter according to sun position data
Rotate the plate to expose the sun mark from the display window
The present invention relates to an electronic timepiece in which the position of the sun is displayed by changing the position of the sun, so that it is possible to provide an electronic timepiece in which the shutter plate for hiding the electro-optical display device and the drive mechanism thereof are effectively used. And

[Brief description of the drawings]

FIG. 1 is a diagram showing a circuit configuration of one embodiment of the present invention.

FIG. 2 is a view showing the shape and positional relationship of a display window, a shutter plate, and a liquid crystal display device in the embodiment.

FIG. 3 is a sectional view showing a configuration of a main part of the embodiment.

FIG. 4 is a general flowchart showing an outline of the operation of the embodiment.

FIG. 5 is a flowchart showing details of a switch process in FIG. 4;

FIG. 6 is a flowchart showing the sun position display processing in FIG. 4 in detail.

FIG. 7 is a flowchart showing in detail the age display process in FIG. 4;

FIG. 8 is a flowchart showing the digital display unit display processing in FIG. 4 in detail;

FIG. 9 is a diagram showing a display transition of a display window unit according to a mode change in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 4 Clock circuit 5 Motor drive circuit 6 Step motor for driving a pointer 12 Step motor for driving a shutter 14 Shutter plate 14a Notch portion 14b Sun mark 14c Month mark 16 Liquid crystal display device 22 Character plate 22a Display window M mode register N Display data register SR Shutter plate position register P register DS Display start signal DE Display stop signal T Time data D Date data R Forward signal L Reverse signal

Continuation of front page (58) Fields investigated (Int. Cl. ⁷ , DB name) G04C 3/00 G04B 19/26 G04G 1/00 314 G04G 9/00 304

Claims (1)

(57) [Claims] 1. A dial having a display window formed thereon, a pointer rotating on the dial, an electro-optical display device provided below a display window formed on the dial, A rotating shutter plate which is provided with a picture of the moon and a sun mark on the upper surface and rotates on the back side of the dial to open and close the display window of the dial, a digital display mode, a moon age display mode, and a sun position display
Mode selection switch means for selecting a mode, first shutter plate movement control means for moving the shutter plate to open the display window when the digital display mode is selected, and for storing moon age data and sun position data . Means for obtaining, and when the moon age display mode is selected, a second shutter for rotating the shutter plate according to the moon age data to vary the amount of a picture of the moon exposed from the display window. Plate movement control means, when the sun position indicating mode is selected,
By rotating the shutter plate according to the position data,
Changing the position of the sun mark exposed from the display window
An electronic timepiece comprising: a third shutter plate movement control unit .