JPH0342393Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an electronic watch that digitally displays the time.

[Prior art and its problems] Conventionally, digital display type electronic watches have only used a liquid crystal display as the time display device to digitally display the time on a Japanese character-shaped display consisting of 7 segments. , lacks decoration. Some objects have movement to enhance their decorativeness, but these movements are simply repeating the same movement at a predetermined period, and are monotonous, uninteresting, easy to get bored of, and still lack decorativeness. .

[Purpose of the invention] This invention was made in view of the above-mentioned circumstances, and its purpose is to provide an electronic timepiece that is highly decorative and capable of displaying a novel time.

[Main points of the invention] In order to achieve the above-mentioned purpose, this invention provides a plurality of display bodies on a reciprocating moving body and displays the time by selectively displaying the plurality of display bodies in accordance with the timing of the movement of the moving body. In particular, control of the reciprocating movement of the moving body and control of the display timing of the display body are formed in a light emitting element, a light receiving element, and a moving body disposed between the two elements. The main point is that the process was successfully achieved by using a plurality of slits.

[Configuration of the Embodiment] FIG. 1 shows the time display state of the electronic watch of the present invention, which is currently displaying 10:58. 7 LEDs (light emitting diodes) at the bottom end of the rod-shaped pendulum 1
2 ₁ to 2 ₇ are arranged at approximately equal intervals, and this pendulum 1 reciprocates at a period T with a predetermined amplitude angle θ about the upper fulcrum 3. Divide this amplitude angle θ into 22 equal parts and predict the angular positions of the 23 pendulums A to W including the start position over time (the speed of the pendulum differs at each position, and is fastest at the center position L position). (the slowest at the A and W positions at both ends), the time digits you are trying to display will be recognized as digits due to the afterimage of your eyes.
The LEDs _{2 1} to 2 ₇ are selected and illuminated at different times in accordance with the passage of time corresponding to each of the angular positions A to W for display. Figure 2 is an external view of the electronic watch of the present invention.
A pendulum 1 is supported by a watch case 4 with a fulcrum 3 as the center of swing. Permanent magnet 5 at the bottom end of pendulum 1
The permanent magnet 5 has N-S poles located in the horizontal direction in the figure, and 2 ₁ to 2 ₇ are the aforementioned LEDs (light emitting diodes). An electromagnet 6 is arranged at the lower end of the watch case 4 at a position corresponding to the permanent magnet 5 of the pendulum 1. (timing).
A flat plate part 7 is provided at the upper end of the pendulum 1,
Three slits 8 ₁ to 8 ₃ are formed in the flat plate portion 7 and are separated from each other and arranged in a substantially horizontal direction. An LED (light emitting diode) 9 is mounted on the watch case 4 facing the slits 8 ₁ to 8 ₃ , and a phototransistor (described later) is arranged facing the LED 9 with the flat plate 7 in between. It is set up. As the pendulum ₁ reciprocates, the slits 8 _{1 to 8 3 pass} in front of the LED 9 in this order. For this reason, the light from the LED 9 enters the phototransistor in fragments, and the phototransistor outputs separated pulse signals (FIG. 5).

FIG. 3 is a diagram showing the block circuit configuration of the electronic timepiece of the present invention. In the figure, 11 is an oscillation circuit that oscillates and outputs a clock signal of a predetermined frequency. The output signal of the oscillation circuit 11 is divided by the frequency dividing circuit 12, for example, 1
The frequency is divided into an Hz signal, and this 1 Hz signal is sent to a sexagesimal second counting circuit 13. Further, a signal of a predetermined frequency outputted from the frequency dividing circuit 12 is given to a timing signal generating circuit 16. The second counting circuit 13 outputs a carry signal every 60 seconds (1 minute), and this 1 minute signal is sent to the sexagesimal minute counting circuit 14. The minute counting circuit 14 outputs a carry signal every 60 minutes (one hour), and this one hour signal is sent to the clock counting circuit 15. The count value (minute information) of the minute counting circuit 14 and the count value (hour information) of the clock counting circuit 15 are sent to the decoder 17.

Therefore, the light from the LED 9 described above is transmitted to the flat plate part 7.
The light passes through the upper slit 8 ₁ (8 ₂ , 8 ₃ ), is received by the photodiode 19, and outputs three pulse signals (FIG. 5). This signal is sequentially input to the pendulum position detection circuit 20, the amplitude angular position of the pendulum 1 is calculated, and the angular position signal is sent to the timing signal generation circuit 20.
6 and the electromagnet drive circuit 21, and the electromagnet drive circuit 21 intermittently excites the electromagnet 6 according to this angular position signal.

On the other hand, the decoder 17 converts the hour and minute data obtained from the minute counting circuit 14 and the clock counting circuit 15 into a numerical pattern on a 7.times.23 matrix and supplies it to the latch memory 23. The latch memory 23 consists of a dot memory with 7 rows and 23 columns (FIG. 4), in which a timed number pattern given from the decoder 17 is stored while changing every minute. The 7th row of the 1st column of the latch memory 23 is simultaneously read out by the timing signal (corner position of A) from the timing signal generation circuit 16.
It is sent to the LED drive circuit 22. After a predetermined time delay, the 7th row of the 2nd column simultaneously generates the timing signal generation circuit 1.
6 (angular position of B) and sent to the LED drive circuit 22. Similarly, the third column is sent to the LED drive circuit 22 with a predetermined time difference. The LED drive circuit 22 has seven independent drive sections on a flat plate, and each drive section is connected to the aforementioned LEDs _{2 1} to 2 ₇ , respectively.
of the drive unit to which the signal “1” is sent from the drive circuit 22.
The LED will emit light.

Next, the operation of this electronic timepiece will be explained. First, the reciprocating motion of the pendulum 1 will be explained. When the permanent magnet 5 swings to the right from the angular position of 0 degrees shown in FIGS. 1 and 2, the photodiode 19 moves through the slit 8 ₁ ,
Pulse signals a, b, and c are outputted in the order of passage of 8 ₂ and 8 ₃ , and the permanent magnet 5 reaches the right side of the electromagnet 6, that is, the angular position θ degrees. After that _, the permanent magnet 5 swings to the left in the opposite direction, so the photodiode ₁₉ emits pulses d, _e ,
Output f (Figure 6a). During this one round trip, the pendulum position detection circuit 20 outputs pulses γ at pulses a and d to the electromagnet drive circuit 21 (FIG. 6b), and the electromagnet 6 is excited during that period in response to these pulses γ. Ru. This is Figure 7, 10
As shown in the figure, when the permanent magnet 5 approaches the electromagnet 6 from the right or left, the electromagnet 6 is excited and the relationship between the permanent magnet 5 and the electromagnet 6 is S→N (left→right) or S←N (left→right). As a result, the pendulum 1 is given an acceleration of swinging around the fulcrum 3. Pulse b, c, d, e
During the time period, when the permanent magnet 5 passes near the electromagnet 6 from the right or left and moves away from it, the electromagnet 6 becomes de-energized (FIGS. 8 and 9).

Also, the timing signal generation circuit 16 calculates the angular position of the pendulum 1 from 0 degrees to θ degrees based on the time difference between pulse b and pulse e (the position where the permanent magnet 5 overlaps the electromagnet 6).
The timing of the 22nd equally divided angular position is calculated, and the readout timing of a set of 7 rows of the latch memory 23 from the 1st column (angular position A) to the 23rd column (angular position W) is output. At the timing for each corner position of pendulum 1
Each of the LEDs _{2 1} to 2 ₇ is selectively turned on in sequence via the LED drive circuit 22, whereby 10:58 as shown in FIG. 1 is displayed due to the afterimage effect of the human eye.

Note that by connecting the clock circuit 15 to a day counter and the day counter to a month counter, providing a separate decoder, and connecting the latch memory 23 and this decoder by switching, the month and day can be displayed by the LEDs _{2 1} to 2 ₇ of the pendulum 1. You can also do it.

[Effects of the invention] As explained in detail above, this invention has a pendulum member that reciprocates around a fulcrum at a predetermined period, and has a plurality of indicators arranged on one side and a plurality of slits on the other side. A light emitting element and a light receiving element are arranged to sandwich this slit to detect the reciprocating position of the pendulum and control the reciprocating movement of the pendulum and the display timing. Despite displaying the time, it was possible to display the time correctly with an extremely simple configuration, changing the image of digital watches, and making it possible to provide a new and tasteful electronic watch that combines movement and numerical display. .

[Brief explanation of the drawing]

Figure 1 is a diagram showing the time display state of the electronic watch of the present invention, Figure 2 is an external front view of the electronic watch, Figure 3 is a block circuit diagram of the present invention, Figure 4 is a partial configuration diagram of the latch memory, and Figure 4 is a partial configuration diagram of the latch memory. 5 and 6 are waveform diagrams for explaining the operation, and FIGS. 7 to 10 are diagrams for explaining the swing acceleration of the pendulum. 1... Pendulum, 2 ₁ to 2 ₇ , 9... LED, 5...
Permanent magnet, 6... Electromagnet, 8 ₁ to 8 ₃ ... Slit, 11... Oscillation circuit, 12... Frequency dividing circuit, 13
...Second counting circuit, 14...Minute counting circuit, 15...
Clock counting circuit, 16...timing signal generation circuit,
17...Decoder, 19...Photodiode,
20... Pendulum position detection circuit, 21... Electromagnet drive circuit, 22... LED drive circuit.

Claims (1)

[Scope of utility model registration request] a pendulum member whose upper and lower sides reciprocate about a fulcrum; a permanent magnet disposed on the lower side of the pendulum member; and a plurality of light emitting indicators disposed at equal intervals; and a plurality of light emitting indicators disposed on the upper side of the pendulum member. a flat plate part having a plurality of slits formed in the direction of the reciprocating motion; a light emitting element disposed on one side of the slits of the flat plate part; and a light emitting element disposed on the other side of the flat plate part through the slits. a light receiving element that receives the supplied light from the light emitting element and outputs a pulse signal when the pendulum member reaches a predetermined first amplitude angular position and a predetermined second amplitude angular position by the reciprocating movement; An electromagnet is arranged at a position corresponding to the position of the permanent magnet when the pendulum member is located at the center position of the reciprocating motion, and the pendulum member is moved to the predetermined amplitude angle position in response to a pulse signal from the light receiving element. an electromagnet drive circuit that supplies an excitation signal to the electromagnet when the clock reaches the reference clock signal; a timer that obtains time information by counting the reference clock signal; and a timer that obtains time information by counting the reference clock signal; Display control means for selectively causing the plurality of display bodies to emit light at predetermined timings between the predetermined first amplitude angular position and the second amplitude angular position using a pulse signal. An electronic clock characterized by: