JPH0131988Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a correction mechanism for a digital watch.

(Prior art) Conventionally, when adjusting the time on a clock,
This was done by turning a correction knob provided on the back of the watch exterior, as shown in the drawings of No. 19483 or Japanese Utility Model Publication No. 1983-122596, or by turning on a correction switch provided on the front of the watch.

(Problem that the invention aims to solve) However, these correction methods cannot be done with one hand because they require holding the watch.
Furthermore, pushing and turning small correction knobs requires force, and especially when a large amount of correction is to be made, it requires time and effort for the user, whether it is a switch or a knob, and is extremely troublesome. It was hot.

In order to solve these problems, it is conceivable to configure the correction switch with a placement state detection switch that is turned on simply by changing the placement state of the watch, thereby simplifying the correction operation. however,
When these watches are placed in a different position, the orientation of the digital time display appears to change, making it extremely difficult to read, and it is also impossible to tell which digit is the correction digit.

(Configuration for Solving Problems) The present invention consists of each time adjustment switch of a digital watch as a switch that is turned on and off by changing the position of the watch. When the time is adjusted, only the corrected time display digit is turned on and the other digits are turned off.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a front view showing the appearance of a digital display timepiece according to an embodiment of the present invention.

As shown in the figure, a frame 4 constituting the watch exterior 2
and switch plates 6a and 6b fitted into portions corresponding to both side surfaces of the frame 4 in a slightly protruding manner.

FIG. 3 is a longitudinal sectional view of the timepiece shown in FIG. 2, showing the structure of the switches provided under each of the switch plates 6a, 6b.

An elastic movable piece 10a is attached to the back side of the switch plate 6a, and the end of this movable piece 10a is attached to a substrate 12a attached to the frame 4. A pair of conductive members 14a and 16 are placed on the substrate 12a covered by the movable piece 10a.
a, and a conductive member 18 is also attached on the inner surface of the movable piece 10a at a position corresponding to the conductive members 14a, 16a. and conductive member 1
Lead wires 20a and 22a are connected to 4a and 16a, respectively, and the other ends of the lead wires 20a and 22a are connected to a timepiece circuit of a movement 24 housed within the timepiece body 2.

The switch plate 6b similarly has a movable piece 10b, a substrate 12b, conductive members 14b, 16b, 18b, and lead wires 20b, 22b.

This switch plate 6, movable piece 10, substrate 12, conductive members 14, 16, 18 and lead wires 20, 2
2 constitutes a placement state detection switch 26 that is turned on in response to the placement state of the watch body 2.

Returning to FIG. 2 again, the front face of the watch body 2 has a display section 28 for displaying the hours and minutes of the time. In the display section 28, there is a group of hour display segments 3 for displaying hour digits.
0, and a minute display segment group 32 that displays minute digits. Both display segment groups 30 and 32 have the same shape, and as shown in FIG. 4, the hour display segment group 30 will be explained as an example. First, four segments running in the vertical direction with respect to the watch body 2 are constructed by combining three segments, ie, segments a to c, d to f, g to i, and j to l. There are four segments perpendicular to this vertical segment, and these four segments are segments m~o, p~
r, s~u and v~x. In this way, the display segment group 30 at this time has four vertical and horizontal segment groups that intersect perpendicularly to form a lattice, so that the display segment group 30 has the same shape both when viewed from the vertical direction and from the horizontal direction.

Figures 5a to 5c are front views of the timepiece placed in different positions.

FIG. 5a shows the normal mounting state. In this case, the switch plates 6a and 6b are not pressed, and the two placement state detection switches 26a and 26
b is off and no modification is made. At this time, hours and minutes are digitally displayed in the hour display segment group 30 and the minute display segment group 32 in the hour display section 28, respectively. At this time, each display segment group 30 includes segments p, e, f, v, c, b, s,
Two Japanese-shaped segment groups consisting only of r, k, l, x, i, h, and u are used.

FIG. 5b shows the case where the left side surface is placed as the bottom surface. In this case, the switch plate 6a is
When the movable piece 10a is also pressed, the conductive members 14a and 16 on the substrate 12a are pressed.
a and the conductive member 18a in the movable piece 10a come into contact, and the conductive members 14a and 16a are electrically connected. As a result, the placement state detection switch 26a is turned on, and the hour digits are corrected. The display in the hour and minute display segment group 32 is turned off, and the digital time displayed in the hour display segment group 30 is oriented in the normal direction with the left side of the watch body 2 as the bottom surface, and the segments g, q, p, a, m, n, d,
Two Japanese-shaped segment groups constituted by i, w, v, c, s, t, and f are used.

FIG. 5c shows the case where the right side surface is placed as the bottom surface. In this case as well, the switch plate 6b is pressed so that the conductive members 14b, 16b and 18b come into contact with each other, and the conductive members 14b and 16b are electrically connected. This means that the placement state detection switch 26b has been turned on, and the minute digit is corrected. At this time, the display of the hour display segment group 30 turns off,
The digital minute time displayed in the minute display segment group 32 is oriented in the normal direction with the right side of the watch body 2 as the bottom surface, and segments f, t, u, l, x,
2 consisting of w, i, d, n, o, j, r, q, g
A group of Japanese-shaped segments are used.

FIG. 1 is a circuit block diagram of a digital timepiece in this embodiment.

In the figure, a reference signal generator 40 that generates a reference signal for timekeeping consists of an oscillator 42 and a frequency divider 44 that divides the frequency of its output to create a reference signal. This reference signal is input to a second counter 46 that counts seconds, and a carry signal from this second counter 46 is input via an OR gate 48 to a minute counter 50 that counts minutes. minute counter 50
The carry signal is inputted via an OR gate 52 to a time counter 54 for counting hours.

At this time, each count signal of the hour counter 54 and the minute counter 50 is input to a decoder 56 for converting it into a display signal for digitally displaying the time on the display section 28. The decoder 56 has a switching circuit 58 to which the count signal from the minute counter 50 is input, and a switching circuit 60 to which the count signal from the hour counter 54 is input.
4, and the output signal of the switching circuit 60 is input to the conversion circuits 66 and 68, respectively. The switching circuit 58 is a circuit that switches and supplies the minute count signal to either the conversion circuit 62 or 64 by turning on or off the placement state detection switch 26b.
When b is turned on, the count signal is supplied to the conversion circuit 62, and when it is turned off, the count signal is supplied to the conversion circuit 64. Similarly, the switching circuit 60 is a circuit for supplying the hour count signal to either the conversion circuit 66 or 68 by turning on or off the placement state detection switch 26a, and when the switch 26a is turned on, the hour count signal is transferred to the conversion circuit. 66, and is configured to be supplied to a conversion circuit 68 when turned off.

On the other hand, the conversion circuit 62 converts the minute count signal into segments p, e, f, v of the minute display segment group 32,
c, b, s, r, k, l, x, i, h, and u, the conversion circuit 66 converts the minute count signal into a display signal that digitally displays the minute time. 30 segments p, e,
f, v, c, b, s, r, k, l, x, i, h,
This is a circuit that uses u to convert time and time into a display signal that is digitally displayed. The digital time displayed by both conversion circuits 62 and 66 is oriented in the normal direction when the watch is placed in its normal position.

Further, the conversion circuit 64 converts the minute count signal into the segments f, t, u, l of the minute display segment group 32,
This is a circuit that uses x, w, i, d, n, o, j, r, q, and g to convert the minute time into a display signal that digitally displays the minute time. When placed, it will be displayed facing the normal direction.

Furthermore, the conversion circuit 68 converts the hour count signal into segments g, q, p,
This is a circuit that uses a, m, n, d, i, w, v, c, s, t, f to convert the hour and time into a display signal that displays digitally. It is displayed facing the normal direction when it is placed in a placed state.

The outputs of the conversion circuits 62 and 64 are supplied to the display segment group 32 of the display unit 28 via an OR circuit 70 and a driver 72, and the outputs of the conversion circuits 66 and 68 are supplied to the display unit 2 via an OR circuit 74 and a driver 73.
8 time display segment groups 30.

The switching circuits 58, 60 and conversion circuits 62 to 68 in the decoder 56 are used to switch the display signal so that only the time digits to be corrected face the normal direction when the watch body is placed in a different state than usual. Configure a switching circuit.

On the other hand, the enable terminal E for controlling the operation/non-operation of the driver 72 is connected to the mounting state detection switch 26a.
The signal of driver 7 is inverted and input.
The inverted signal from the placement state detection switch 26b is input to the enable terminal E of No. 3.

Further, the placement state detection switch 26a inputs the correction signal φ to an AND gate 76, and the output of the AND gate 76 is input to the hour counter 54 via the OR gate 52. In addition, the mounting state detection switch 26b is also connected to the AND gate 7 along with the correction signal φ.
8 and the output of AND gate 78 is input to minute counter 50 via OR gate 48. The OR gate 48 and AND gate 78 constitute a minute correction circuit 80, and the OR gate 52 and AND gate 76 constitute an hour correction circuit 82.

The configuration of the digital clock in this embodiment is as described above, and the operation of this circuit will be explained below.

When the watch is placed in the normal position as shown in FIG.
are both off, and AND gates 76 and 78 are closed. Also, at this time, the switching circuit 5 in the decoder 56
8 and 60 supply a minute count signal and an hour count signal to conversion circuits 62 and 66, respectively. Therefore, as shown in FIG. 5a, the digital displays for hours and minutes are oriented in the same direction.

Here, when the placement state is changed to make the left side surface the bottom surface, the placement state detection switch 26 is turned on, and the switching circuit 60 supplies the hour count signal to the conversion circuit 68. As a result, as shown in FIG. 5b, the time display segment group 30 displays digital time with the right side at the bottom. At the same time, the correction signal φ is sent via the AND gate 76 which is opened.
is input to the hour counter 54, and the hour and time are fast-forwarded. Furthermore, the placement state detection switch 26
When a is turned on, an L signal is input to the enable terminal E of the driver 72, whereby the driver 72 becomes inactive, the minute display goes out, and the above-mentioned modified information is displayed on the display section 28. Only the current time will be lit.

When the right side surface is placed on the bottom, the placement state detection switch 26b is turned on, and the switching circuit 5
8 provides a minute count signal to conversion circuit 64.
As a result, as shown in FIG. 5c, the minute display segment group 32 displays a digital minute time with the left side as the bottom. At the same time, a correction signal φ via the AND gate 78, which is opened, is input to the minute counter 50, and the minute time is quickly corrected. At this time, for the hour digits that have not been corrected, the L signal is input to the enable terminal E of the driver 73, so the hour digit display goes out. Therefore, in the case of minute digit correction, only the minute digit will be displayed.

(Effects of the invention) As described above, according to this embodiment, each time display digit can be corrected by a simple operation that can be performed with one hand by changing the mounting state of the watch. In addition, the display format of the correction digit changes so that it always faces the normal direction even if the mounting state changes, and all other digits are turned off, making it very easy to see the correction digit, and which digit is displayed. You can see at a glance whether it has been corrected.

As described above, according to the present invention, the time can be corrected by the simple operation of changing the mounting condition of the watch, and during correction, all the lights except the digits being corrected are turned off, making visual reading very easy. It is easy to use, and you can see at a glance which digit is being corrected, which helps prevent incorrect corrections.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of a digital display timepiece according to an embodiment of the present invention. FIG. 2 is an external view of a digital display timepiece according to an embodiment of the present invention. FIG. 3 is a longitudinal sectional view of the timepiece shown in FIG. 2. FIG. 4 is a diagram showing the arrangement of display segments in the display unit. Figure 5 a-c
FIG. 3 is a front view showing a display form when the mounting state of the watch is changed. 26a, 26b...Placement state detection switch, 2
8...Display section, 30...Hour display segment group, 3
2... Minute display segment group, 40... Reference signal generator, 56... Decoder, 72, 73... Driver, 80... Minute correction circuit, 82... Hour correction circuit.

Claims (1)

[Scope of utility model registration request] A reference signal generator that generates a reference signal, a counter group that counts each digit of time using the reference signal, a decoder group that converts the count signal of each counter into a digital display signal, and a digital display signal from the decoder. A display section that digitally displays each digit of the time, a group of drivers that drive each digit of this display section, a plurality of external switches, and only the corresponding counters are forcibly corrected by operating each of the external switches. In a digital watch having a correction circuit, each of the external switches is provided corresponding to each exterior surface of the watch, and when the watch is placed in a different state from the normal one, the external switch is placed on the bottom surface of the digital watch. The corresponding switch is configured to be a placement state detection switch that is turned on, and the display elements for displaying each time digit in the display section are configured to have the same shape when viewed from the horizontal and vertical directions of the watch body. , and each of the decoders exchanges the count signal of each of the counters with a display signal that causes the watch to face in the normal direction when the watch is placed in a state where the bottom surface is different from the normal state. A conversion circuit and a plurality of conversion circuits corresponding to the counters to be corrected by the ON signal of the position detection switch select the conversion circuit that converts the count signal from the counter into a display signal pointing in the normal direction. The driver group includes a switching circuit for supplying the signal, and an OR circuit for supplying the display signal from the conversion circuit to the display section, and the driver group further includes a driver corresponding to the digit to be corrected by turning on/off the position detection switch. A digital clock correction device characterized in that it is configured to drive only the digital clock.