JP2002071845A - Automatic correction clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic correction clock allowing confirmation of the process of a correction processing when correcting time and capable of partially performing a correction, even when all data can not be read. SOLUTION: This clock is provided with a control circuit 14 for outputting a control signal CTL1 to a stepping motor 121 for a second hand through a buffer 17 for data completed in reading, that is, for every reading completion of hour/minute data, total day data and year/day of the week data, for instance, while reading a time code at a reception and for stopping a second hand 202 by driving the hand 202 to a position corresponding to every data in advance. As a result, the process of the correction processing can be confirmed when correcting time. Even when all data can not be read, whether a partial correction is performed or not can be selected or the partial correction becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic timepiece such as a radio-controlled timepiece capable of displaying analog time by hands, for example, a radio-controlled timepiece which receives a radio signal to correct the time.

[0002]

2. Description of the Related Art A radio-controlled timepiece has a function of receiving, for example, a long-wave (40 kHz) standard radio wave transmitting the Japanese Standard Time with high accuracy and performing a so-called zero return based on a received signal. A pointer position detecting device is provided to accurately adjust the position of the pointer to the correct hour at the time of zero return.

This type of radio-controlled timepiece has a built-in receiving system circuit for receiving a standard radio wave, and a control circuit for driving a pointer driving system based on the received signal to correct the time. Has, for example, an initial correction mode without time data in an initial state and a normal correction mode.

In the initial correction mode, for example, when a radio-controlled timepiece is purchased and placed at a predetermined place indoors, a battery is first inserted and set at a predetermined position of the timepiece. Next, as an initial needle adjustment, a needle position detection and a zero return operation are performed. When the return-to-zero operation is completed, reception of the standard radio wave by the receiving circuit is started, and the received radio wave is input to the control circuit.

[0005] The control circuit performs a decoding operation to time based on the received radio wave input. As a result of decoding,
If the time can be set, the pointer position is corrected to a position corresponding to the decoded time code, the initial correction mode ends, and the mode shifts to the normal correction mode.

On the other hand, if the time cannot be set, the position of the hands is not corrected, and the user is notified of the fact by turning on, for example, an LED or the like as notification means provided in the timepiece body. .

In the normal correction mode, after the pointer position is corrected in the initial correction mode, the pointer position is corrected to a position corresponding to the time code of the received radio signal.

[0008]

In the above-mentioned radio-controlled timepiece, when the time is adjusted by receiving a standard radio signal, an LED is turned on or off to indicate that the adjustment operation is being performed. It is blinking, the hand movement step of the second hand is changed, or the fact that correction is being performed is displayed on a liquid crystal display device or the like by a graphic.

[0009] In such a display method, it is not possible to specifically confirm whether or not the correction processing has been properly performed on the radio-controlled timepiece side.

[0010] Further, in the conventional radio-controlled timepiece, if all data cannot be properly timed, it is configured to be unreceivable and will not be corrected. For example, hour and minute data cannot be received normally. If it is possible to correct only the calendar, for example, when the total day or year / day of the week data can be received, it is convenient.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to check the progress of correction processing at the time of time correction, and to provide an automatic correction that can partially correct even if all data cannot be read. It is to provide a modified clock.

[0012]

In order to achieve the above-mentioned object, the present invention provides an analog time display using a pointer, and receives a standard code in which a plurality of data including at least time are arranged in a time series. An automatic correction timepiece that corrects the data, comprising: a hand driving means for driving a hand according to a control signal; and reading data included in the standard code sequentially during reception of the standard code, and driving the control signal by the hand driving the hand. Output to the means, stop one pointer at each position previously associated with each read data, and after all the standard code reading processing is completed, output the control signal to the pointer driving means and input Control means for correcting the pointer position at a time corresponding to the standard code.

In the present invention, the standard code includes a blank area where no data exists in a boundary area between data, and the control means transmits the control signal to the pointer while reading the blank area. It outputs to the driving means to drive the one pointer.

According to the present invention, there is provided a display means capable of digital display, and a correction switch for correcting display information of the display means.

Further, in the present invention, the control means receives the interruption of the correction switch, outputs the control signal to the pointer driving means after the correction switch is operated and the time correction by digital display is completed. Then, the pointer position is corrected to a time position corresponding to the corrected time.

In the present invention, the control means causes the pointer position to be corrected at a rapid traverse.

According to the present invention, when the standard code is received by the control means, the data included in the standard code is read during the reception of the standard code, and the control signal is controlled every time the data is read. The pointer is output from the means to the pointer driving means, and the pointer is driven to point to each position previously associated with one hand, for example, the second hand, and is stopped. The output of the control signal during the data reading process is performed while reading a blank area where no data exists in the boundary area between the data, so that the influence on the reception sensitivity of the standard code is suppressed. Then, after all the reading (detection) processing of the standard code is completed, a control signal is outputted from the control means to the pointer driving means, and the pointer position is corrected at a time corresponding to the input time code, for example, by fast-forwarding.

Further, according to the present invention, even if all the data is not normally read, the partially read data can be recognized from the stop position of the one hand (second hand).
Therefore, it is possible to select whether or not to partially correct. Then, when performing a partial correction, the correction switch is operated, and after the time correction by the digital display is completed, a control signal is output to the pointer driving means, and the pointer is moved to a time position corresponding to the corrected time. The position is corrected.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of a signal processing system circuit of a radio-controlled timepiece as an automatic timepiece according to the present invention, and FIG. 2 is a pointer position of the radio-controlled timepiece according to the present invention. FIG. 3 is a plan view of a main part of a pointer position detecting device of a radio-controlled timepiece according to the present invention.

In FIG. 1, reference numeral 10 denotes a signal processing system circuit;
Is a standard radio signal reception system, 12 is a reset / forced reception switch, 13 is an oscillation circuit, 14 is a control circuit, 15 is a drive circuit, 16 is a light emitting element as a notification means, 17 is a buffer circuit, 18 is a drive circuit, 20 Is a switch group for correction, 30 is a liquid crystal display panel, V _CC is a power supply voltage, C _{1 to} C
₃ is a capacitor, R _{1 to} R ₅ are resistive elements, 100 is a watch body, 120 is a first drive system for driving the second hand, 130 is a second drive system for driving the minute hand and the hour hand as hands, 140
Denotes a light transmission type light detection sensor, and 150 denotes a manual correction system in which a user directly adjusts the time manually. Note that the buffer 17, the first drive system 120, and the second
The driving system 130 constitutes a pointer driving means, and includes a control circuit 14, a drive circuit 18, and a light transmission type light detection sensor 14.
0, the first drive system 120 and the second drive system 130 constitute a pointer position detecting means.

The liquid crystal display panel 30, as shown in FIG.
Hour side). The liquid crystal display panel 30 can, for example, emit light by a backlight, and can display a calendar display digitally under the control of the control circuit 14 as described later.
At the time of forced reception, all data is displayed and illuminated until the reception operation, pointer position detection, and fast-forward time correction are completed, and, for example, during reception of a long wave including a time code signal transmitted from a key station, reading is performed. The digital display is performed sequentially from the data for which.

In FIG. 4, reference numeral 202 denotes a second hand;
3 indicates a minute hand, and 204 indicates an hour hand.

The standard radio signal receiving system 11 receives a long wave (for example, 40 kHz) including a time code signal transmitted from, for example, a key station and performs predetermined signal processing with the receiving antenna 11a. And a long-wave receiving circuit 11b that outputs the signal to the receiver. The long-wave receiving circuit 11 includes, for example, an RF amplifier, a detecting circuit, a rectifying circuit, and an integrating circuit.

The long-wave (40 kHz) standard radio wave transmitted by the standard radio signal receiving system 11 and transmitting the Japan Standard Time with high accuracy is transmitted in a form as shown in FIG. Specifically, in the case of the "1" signal, a signal of 40 kHz is sent for 500 ms (0.5 s) during one second (s), and in the case of the "0" signal, the signal is transmitted for one second (s). 800ms
A signal of 40 kHz is transmitted for (0.8 s), and in the case of the “P” signal, 200 ms (0.2 s) in one second (s)
Only a signal of 40 kHz is sent. When the receiving state is good, the long wave receiving circuit 11b outputs a signal S11 to the control circuit 14 as a pulse signal corresponding to the presence or absence of 40 kHz as shown in FIG. 5B.

FIG. 6 shows an example of the time code of the standard time radio signal. The current longwave standard radio wave in Japan is transmitted from Fukushima Prefecture under the control of the Communications Research Laboratory (CRL) of the Ministry of Posts and Telecommunications, and the transmitted information includes the minutes, hours, and the accumulated date from January 1st. Has become.

The transmission of the time data is performed at one bit / second, and one minute is defined as one frame. In this frame, the information of the minute, hour, and the integrated date from January 1 is provided by the BCD code. The transmitted data includes a marker called a P-code in addition to 0 and 1, and this P-code is present at several places in one frame, and is equivalent to the minute (0 second), 9 seconds,
Appears at 9, 29, 39, 49, and 59 seconds. This P code appears 59 times in one frame.
Only in the case of seconds and 0 seconds, the position that appears continuously becomes the minute position. In other words, time data such as minute / hour data is determined in the frame with reference to the minute position, so that the time data cannot be extracted unless the minute position is detected.

Next, the long standard radio wave will be described.

In the Japanese standard radio wave, in addition to the previous (at the time of the experimental station) transmission data, the last two digits, the day of the week, minute parity, hour parity, spare bits to be used when summer time is introduced, and leap seconds are added. (See FIG. 6A). Also,
At 15 minutes and 45 minutes each hour, wave stop information for interrupting transmission of radio waves was also added (see FIG. 6B). In the following, among these newly established information, the spare bits, the leap second information, and the interruption information will be described.

The spare bits are, as shown in Table 1, SU
1. Use SU2. These are provided for future information expansion. When this bit is used in summer time information, SU1 = SU2 = 0, "no change to daylight saving time within 6 days", SU1 = 1, SU2 = 0
Then, "There is a change to daylight saving time within 6 days", SU1 = 0.
SU2 = 1 means “during daylight saving time”, SU1 = SU2 = 1
In this example, the information format is such that "daylight saving time ends within six days". Regarding the switch to daylight saving time, summer time has not yet been introduced in Japan, and it is still unknown. However, looking at the change of daylight saving time in Europe, it often happens during the night.

[0030]

[Table 1]

The next leap second is LS as shown in Table 2.
LS1 = LS2 = 0, "leap second is not corrected within one month", LS1
= 1 · LS2 = 0 "There is a negative leap second (deletion) within one month", that is, one minute is 59 seconds, and LS1 = LS
2 = 1 means that there is a positive leap second (insertion) within one month
That is, the information format is such that one minute is 61 seconds. The timing of the leap second correction has already been determined and is to be performed immediately before January 1 or July 1 of the UTC time. Therefore, Japan Time (JTC)
Then, it will be performed just before 9:00 am on January 1 or July 1.

[0032]

[Table 2]

The stoppage information is shown in (a), (b) and (c) of Table 3.
, ST1, ST2, ST3, ST4, S
Using T5 and ST6, wave stop information of wave stop start notice is provided in ST1, ST2, ST3, wave stop time notice in ST4, and wave stop information in ST5, ST6. First, the stoppage notice will be described. When ST1 = ST2 = ST3 = 0, there is “no scheduled stoppage”, when ST1 = ST2 = 0, ST3 = 1, “stop within 7 days”, ST1 = 0, ST2 = 1.・ ST
When 3 = 0, “wave stops within 3 to 6 days”, ST1 = 0 · S
In T2 = ST3 = 1, “waves will stop within 2 days”, ST1 = 1
ST2 = ST3 = 0 "Wave stops within 24 hours", S
When T1 = 1.ST2 = 0.ST3 = 1, the wave is stopped within 12 hours. When ST1 = ST2 = 1.ST3 = 0, the wave is broken within 2 hours. Next, the break time notice
ST4 = 1 "only during the day", ST4 = 0 "all day,
Or there is no scheduled stoppage. " Next, the suspension period notice is S
When T5 = ST6 = 0, “No scheduled stoppage”, ST5 = 0.
For ST6 = 1, "7 days or more of suspension or unknown period", S
For T5 = 1 and ST6 = 0, "Wave stopped within 2 to 6 days, S
At T5 = ST6 = 1, it is “waves stop in less than 2 days”.

[0034]

[Table 3]

As described above, the transmission information by radio waves including the long-wave standard time information managed and operated by the Communications Research Laboratory (CRL) of the Ministry of Posts and Telecommunications has been described in detail. , Stoppage information is also included in the transmission information.

The reset / forced reception switch 12 is turned on when returning various states of the control circuit 14 to the initial state. When the reset / forced reception switch 12 is turned on or when a battery (not shown) is set, the radio-controlled timepiece enters a correction mode (forced correction mode) in which a standard time radio signal is forcibly received and corrected. Become.

The oscillation circuit 13 includes a crystal oscillator CRY and capacitors C ₂ and C ₃ , and supplies a basic clock having a predetermined frequency to the control circuit 14.

The control circuit 14 has a minute hand counter, a second hand counter, a standard minute / second counter, and the like (not shown). In the initial correction mode, the control circuit 14 receives the pulse signal S11 from the standard radio signal receiving system 11 and receives the received standard signal. The reception status of the radio signal is compared with a predetermined reference range,
If the reception state is within the reference range, the control signal CTL
_{1 and} CTL ₂ through the buffer 17, the stepping motor 121 for the second hand and the stepping motor 1 for the hour and minute hands
31 to detect the pointer position (initial setting). If the reception state is not within the reference range, the control signals CTL _1, C
Without outputting the TL _2, and outputs a drive signal DR ₁ to the drive circuit 15, while the light emitting element 16 as a notification means to notify the subject that the radio wave receiving the user can hardly. In addition, after performing the initial setting when the reception state is within the reference range, the received radio signal is decoded,
As a result of the decoding, if time can be set, the control signals CTL _{1 and} CTL are controlled in accordance with the count control of various counters based on the basic clock by the oscillation circuit 13 and the input level of the detection signal DT ₁ by the light detection sensor. ₂ is output to the stepping motor 121 for the second hand and the stepping motor 131 for the hour and minute hands via the buffer 17 to perform rotation control to perform fast-forward time correction control.

[0039] Then, the control circuit 14, in the time code reading at the time of reception, data reading is completed, for example when and minute data, cumulative days data, for each complete reading of the year, the day data, the control signal CTL ₁ Output to the second hand stepping motor 121 via the buffer 17
02 is driven and stopped at a position previously associated with each data as follows. Completed reading of hour / minute data: Move the second hand 202 to the 20-second position and stopped. Completed reading of the total day data: Moved the second hand 202 to the 40-second position and stopped. Completed reading the year / day data: Moved the second hand 202 to the 60-second position. ,Stop.

Note that the control circuit 14 does not drive the second hand 202 even if other data is read before the hour / minute data, so that the second hand 202 does not operate at a predetermined second position after the data preceding the order is read. Drive for the first time. Further, the control circuit 14, the output of the control signal CTL ₁ is a pulse signal in the data reading process is performed nonexistent margin area of the data of the boundary area between the data and the data being read, the reception sensitivity of the standard codes The effect of is prevented.

On the other hand, as a result of decoding, if time cannot be set, the drive signal DR ₁ is output to the drive circuit 15 without outputting the control signals CTL _{1 and} CTL ₂ , and the notification signal is output. The light emitting element 16 emits light to notify the user that radio wave reception is not good. Thus, the operation in the initial correction mode is completed.

After completing the operation in the initial correction mode, the control circuit 14 controls the normal correction mode. In the normal correction mode, the same operation as after the initial setting operation in the initial correction mode is performed. Specifically, the received radio signal is decoded, and if time is possible as a result of the decoding, the count control of various counters and the light detection sensor 14 based on the basic clock by the oscillation circuit 13 are performed.
0 according to the input level of the detection signal DT ₁ due, by controlling the rotation of the control signal CTL _1, CTL ₂ is output to the stepping motor 131 of the stepping motor 121 and hour and minute hands for the second hand via a buffer 17 Perform fast forward time correction control.

[0043] Then, the control circuit 14, in the time code reading at the time of reception, data reading is completed, for example when and minute data, cumulative days data, for each complete reading of the year, the day data, the control signal CTL ₁ Output to the second hand stepping motor 121 via the buffer 17
02 is stopped by being driven to the position previously associated with each data as described above. On the other hand, as a result of decoding, if time cannot be set, the control signals CTL _1,
Without outputting the CTL _2, and outputs a drive signal DR ₁ to the drive circuit 15, while the light emitting diode 16 serving as notifying means is notifying the radio wave received by users who are not good.

In the above description, when it is determined that the reception state is out of the reference range, the radio wave is weak or the noise is large. If the signal is very weak,
As shown in (c), low signal (L) for several signals
Or high level (H). When there is much noise, the level changes regardless of the time radio wave. When the signal S11 in these states is received, for example, twice or more every 10 seconds, it is determined that the reception state is out of the reference range. Specifically, for example, when a change in level is not detected within 1 second within a time period of about 10 seconds and the detected pulse width is 0.
If the time is not around 8, 0.5, and 0.2 seconds, it is regarded as NG, and if NG occurs twice or more, it is determined that reception is impossible.

The drive circuit 15 is a pnp transistor
Q1 and resistance element R₁ , R_Two It consists of.
The base of the transistor Q1 is a resistor R₁ Control via
Drive signal DR of circuit 14₁ Connected to the output line
And the collector is a resistor R_Two Through the light emitting diode
Is connected to the anode of the light emitting element 16 composed of
Power supply voltage V_CCConnected to the supply line. And
The cathode of the light emitting element 16 is grounded. That is,
The light emitting element 16 is supplied from the control circuit
Signal DR ₁ To emit light when the
Connected to the circuit 15.

The drive circuit 18 includes a pnp transistor Q2 and resistance elements R ₃ and R ₄ .

The correction switch group 20 includes a correction mode switch 21, a calendar correction switch 22, an up switch (UP) 23, and a down switch (DN) 24 for correcting the digital display on the liquid crystal display panel 30, and the control circuit 14 includes: Are connected in parallel to the four input terminals. When the correction mode switch 21 is turned on, the control circuit 14 shifts to a button correction mode described later in detail.
The control circuit 14 receives the correction mode switch 21 during reception of the standard radio signal or during normal operation, and shifts to the button correction mode. Up switch 2
3, or the down switch 24 is, for example, a push button switch. When the digital display time is corrected, the control circuit 14 controls the control signal C at the moment when these switches are pressed.
The outputs of TL ₁ and CTL ₂ are stopped, and the stop time is displayed on the liquid crystal display panel 30. Then, the control circuit 14
When the time is corrected on the digital display and the correction mode is released, the hands are fast-forwarded to follow the digital display.

The watch main body 100 is connected to the lower case 111 as a second case which is connected to face each other to form an outline.
And an upper case 112 as a first case, and a middle plate 113 arranged in a state of being connected to the lower case 111 at a substantially central portion in a space formed by the lower case 111 and the upper case 112, The first drive system 120, the second drive system 130, the light detection sensor 140, the manual correction system 150, and the like are fixed or supported at predetermined positions of the lower case 111, the middle plate 113, and the upper case 112 in the space. ing.

As shown in FIGS. 2, 3 and 7, the first drive system 120 includes a substantially U-shaped stator 121a, a drive coil 121b wound on one leg of the stator 121a, A second-hand stepping motor 121 constituted by a rotor 121c rotatably arranged between the other magnetic poles of the stator 121a;
First fifth wheel 1 as a first transmission gear (first detection gear) in which a large-diameter gear 122a meshes with a pinion 121c '
22 and a second hand wheel 123 as a second detection gear (first pointer wheel) meshed with the small-diameter gear 122b of the first fifth wheel & pinion 122. Here, the second-hand stepping motor 121 is configured such that the stator 121 a
The fixed is placed, the rotor 121c are axially supported on the intermediate plate 113 and the upper case 12, on the basis of the output control signal CTL ₁ of the control circuit 14, the direction of rotation, the rotation angle and rotation speed control Is done.

The first fifth wheel & pinion 122 has a large diameter gear 122a.
Are formed with 60 teeth and the small-diameter gear 122b is formed with 15 teeth. The small-diameter gear 122b is rotatably supported by the lower case 111 and the upper case 112. The large-diameter gear 122a is connected to the rotor 121c of the second-hand stepping motor 121. (Pinion 121
c ′) to reduce the rotation speed of the rotor 121c to a predetermined speed. As shown in FIGS. 9 and 11, the first fifth wheel & pinion 122 has three circular shapes arranged at equal intervals in the circumferential direction (center angle α1 is 120 °) in a region overlapping with the second hand wheel 123. Is formed. This through hole 122c not only allows the detection light of the light detection sensor 140 to pass, but at least one of the
Positioning hole when assembling the 5th wheel 122
It is used as

The second hand wheel 123 has a large-diameter gear 123a having 60 teeth, and one end of a shaft portion thereof is connected to the upper case 112.
The second hand shaft 123b is press-fitted to the other end which penetrates the middle plate 113 toward the lower case 111 side. The second hand shaft 123b is inserted into a minute hand pipe 134p described later, , A second hand 202 is attached. As shown in FIG. 10, the second hand wheel 123 has eleven circular shapes arranged at regular intervals (central angle α2 is 30 °) in the circumferential direction in a region overlapping with the first fifth wheel & pinion 122 by rotation. And a positioning light-shielding portion 123d having a different pitch at only one position (a through hole 123c and a through hole 12c).
(A central angle with 3c is 60 °). Then, when the through hole 122c of the first fifth wheel & pinion 122 first faces the through hole 123c after facing the positioning light shielding portion 123d, the second hand points to the hour.

The through hole 123c not only allows the detection light of the light detection sensor 140 to pass, but at least one of the
It is used as a positioning hole (a determining hole) when assembling the second hand wheel 123. In addition, these through holes 123
An arc-shaped biasing spring 123e that is long in the circumferential direction and protrudes in the rotation axis direction is defined by the notch hole 123f inside the inside of c. The arc-shaped urging spring 123e urges the second hand wheel 123 in the rotation axis direction.

Here, the positioning light-shielding portion 123d is formed at a position distant from the notch hole 123f in the circumferential direction, that is, at a region where the two notch holes 123f are separated from each other. Therefore, a sufficient distance between the notch hole 123f and the positioning light shielding portion 123e can be ensured.
In the region of the positioning light shielding portion 123d, the detection light does not go around the notch hole 123f, and the detection light can be reliably blocked by the positioning light shielding portion 123d.
That is, since the positioning light-shielding portion 123d is formed at a position away from the region where the notch hole 123f, which is likely to cause an erroneous detection due to the detection light wraparound, the positioning light-shielding portion 123d is set to the rotation angle of the second hand wheel 122. By using it for positioning, reliable positioning can be performed.

In the second hand wheel 122, as shown in FIG. 10, instead of providing a plurality of (11) through holes 123c, as shown in FIG. 11, the second hand wheel 122 is located at a position radially opposed to the positioning light shielding portion 123d. The other through-holes 123c are respectively cut out by the
It may be opened integrally with 3 g. According to this, it is possible to further ensure the passage of the detection light in a portion where the passage of the detection light is permitted, and to reduce waste of the material forming the second hand wheel 122.

As shown in FIGS. 2, 3, and 8, the second drive system 130 includes a substantially U-shaped stator 131a, a drive coil 131b wound around one leg of the stator 131a, An hour / minute hand stepping motor 131 constituted by a rotor 131c rotatably arranged between the other magnetic poles of the stator 131a;
A second fifth wheel 132 as an intermediate gear in which a large-diameter gear 132a meshes with a pinion 131c 'of 1c, and a second transmission gear in which a large-diameter gear 133a meshes with a small-diameter gear 132b of the second fifth wheel 132 A third wheel 133 as a (third detection gear), a minute hand wheel 134 as a fourth detection gear (second pointer wheel) in which a large diameter gear 134a meshes with a small diameter gear 133b of the third wheel 133, The minute wheel 135 serving as an intermediate gear in which the large-diameter gear 135a meshes with the small-diameter gear 134b of the minute hand wheel 134, and the fifth detection gear (second pointer wheel) meshing with the small-diameter gear 135b of the minute wheel 135 of this day )). here,
The hour / minute hand stepping motor 131 includes a stator 131.
a is mounted on and fixed to the middle plate 113, and the rotor 131c is pivotally supported by the middle plate 113 and the upper case 112, and its rotation direction, rotation angle and rotation speed are determined based on an output control signal of the control circuit. Is controlled.

The second fifth wheel & pinion 132 has a large diameter gear 132a.
The number of teeth is 60 and the number of teeth of the small-diameter gear 132b is 15 and is supported by the middle plate 113 and the upper case 112,
The large-diameter gear 132a is a stepping motor 1 for the hour and minute hands.
The rotation speed of the rotor 131c is reduced to a predetermined speed by meshing with the 31st rotor 131c (pinion 131c '). As the second fifth wheel & pinion 132, the above-mentioned first fifth wheel & pinion 122 may be diverted, that is, the one provided with the through-hole 122c may be used. As a result, parts can be shared and the cost of the product can be reduced.

The third wheel & pinion 133 has a large-diameter gear 133a having 60 teeth and a small-diameter gear 133b having 10 teeth. One end of a shaft is pivotally supported by the upper case 112, and the other end is a medium. The second fifth wheel 132 is decelerated by rotating the second fifth wheel 132 so as to be rotatable while penetrating the plate 113.
To communicate. As shown in FIG. 10, the second wheel 123 and the first fifth wheel 12
10 circular through holes 133 arranged at equal intervals (central angle α3 is 36 °) in the circumferential direction in a region overlapping with 2
c is formed. The through hole 133c not only allows the detection light of the light detection sensor 140 to pass therethrough, but at least one of the through holes 133c is used as a positioning hole (determining hole) when the third wheel & pinion 133 is assembled.

The minute hand wheel 134 has a large-diameter gear 134a having 60 teeth and a small-diameter gear 134b having 14 teeth, and has a central part in which a small-diameter gear 134b is integrally formed. Are formed to have a substantially T-shape in side view. And the minute hand pipe 134p
Is rotatably supported by the middle plate 13, and the shaft at the other end is rotatably inserted into an hour hand pipe 136 p of an hour wheel 136 described later. The minute hand 1 pipe 34
The p penetrates through the lower case 111 and protrudes toward the dial 201 of the timepiece, and has a minute hand 203 attached to its tip.

As shown in FIG. 13, a second hand 123, a first fifth wheel 122,
Three arc-shaped through holes 134c, 134d, and 134e that are long in the circumferential direction are formed in a region overlapping with the third wheel & pinion 133. These arc-shaped through holes 134c and arc-shaped through holes 134
d is formed at a central angle α5 of 30 ° and is separated by 30 °, and the arc-shaped through holes 134d and 134e are 3 ° apart at a central angle α6.
The arc-shaped through holes 134e and 134c are formed at a central angle α7 of 60 ° and separated by 0 °. That is, the widest light shielding portion A is formed between the arc-shaped through holes 134e and 134c,
A light-shielding portion B narrower than the light-shielding portion A is formed between the arc-shaped through holes 134c and 134d and between the arc-shaped through-holes 134d and 134e.

The arc-shaped through hole 134c has a circular portion 134c 'at one end and a wide arc portion 134 extending from the other end.
c '' and a narrow arc portion 134c '''connecting the two. This narrow arc 134c '''
The circular portion 134c 'defined by is used not only for transmitting the detection light but also as a positioning hole (a determining hole) when the minute hand wheel 134 is assembled.

The hour hand wheel 136 has a large-diameter gear 136a having 40 teeth and a cylindrical hour hand pipe 136p integrally attached to the center of the large-diameter gear 136a. The minute hand pipe 134p is inserted. The hour hand pipe 136p is connected to the lower case 1
1 is rotatably supported by being inserted through a bearing hole 111 a formed in the lower case 111.
, And protrudes toward the dial 201 of the timepiece, and an hour hand 204 is attached to the tip of the watch.

As shown in FIG. 14, the hour hand 136 has a second hand wheel 123, a first fifth wheel 122,
Three arc-shaped through holes 136c, 136d, 13 elongated in the circumferential direction in an area overlapping the third wheel 133 and the minute wheel 134.
6e are formed. The arc-shaped through-hole 136c and the arc-shaped through-hole 136d are formed at a central angle α8 of 45 ° and are separated from each other, and the arc-shaped through-hole 136d and the arc-shaped through-hole 136e are
The arc-shaped through hole 136e and the arc-shaped through hole 136c are formed at a central angle α10 of 60 ° and are separated by 60 °.
0 °, and furthermore, arc-shaped through holes 136 are formed.
The length of c, 136d, 136e is the central angle β1 + β2,
β3 and β4 are set to be 75 °, 60 °, and 90 °, respectively. That is, the narrowest light-shielding portion C is formed between the arc-shaped through-hole 36e and the arc-shaped through-hole 136c, and between the arc-shaped through-hole 136c and the arc-shaped through-hole 136d than the light-shielding portion C. A light-shielding portion D having a larger width is formed, and a light-shielding portion E wider than the light-shielding portion D is formed between the arc-shaped through holes 136d and 136e.

The arc-shaped through hole 136c has a circular portion 136 located at a central angle β1 of 7.5 ° from one end.
c ′, a wide arc portion 136c ″ extending from the other end side,
Both are connected and formed by narrow arc portions 136c '''located on both sides of the circular portion 136c'.
The circular portion 136c ′ defined by the narrow circular arc portion 136c ′ ″ is used not only for transmitting the detection light but also as a positioning hole (a determining hole) when the hour wheel 136 is assembled.

The minute wheel 135 has a large-diameter gear 135a having 42 teeth and a small-diameter gear 135b having 10 teeth, and is rotatable with respect to a projection 111b formed on the lower case 111. The large-diameter gear 135a meshes with the small-diameter gear 134b formed on the minute hand pipe 134p,
Further, the small-diameter gear 135b meshes with the hour wheel 136 (136a) to reduce the rotation of the minute wheel 134 to reduce the rotation of the hour wheel 136.
To communicate.

As shown in FIG. 2, the light detection sensor 140 is a circuit board 141 fixed to the wall of the upper case 112.
Light-emitting element 142 comprising a light-emitting diode mounted on
And lower case 1 so as to face light emitting element 142.
11 and a light receiving element 144 composed of a phototransistor mounted on a circuit board 143 fixed to the wall surface. The anode of the light emitting element 142 is connected to the other end of the resistance element R ₄ in the drive circuit 18 having one end connected to the collector of the pnp transistor Q _2, the cathode is grounded, the light receiving element 144
Connected to the emitter. The collector of the light receiving element 144 is connected to the control circuit 14. Connecting lines between the control circuit is adapted to the output line to the control circuit 14 of the detection signal DT _1, the output line, the resistor element R
₅ is connected to the supply line of the power supply voltage V _CC . The emitter of the transistor Q ₂ of the driving circuit 18 is connected to the supply line of the power supply voltage V _CC, the base is connected to the output line of the drive signal DR ₂ via the resistor element R _3. That is, the light emitting element 142 is
4 is connected to the drive circuit 18 so as to emit light when a low-level drive signal DR ₂ is output from the drive circuit 18.

Further, as shown in FIG. 3, the first
, The fifth wheel 122, the second wheel 123, the third wheel 133, the minute wheel 134, and the hour wheel 136 are all located at the same time. Then, the through hole 122 of the first fifth wheel & pinion 122
c, through hole 133c of the third wheel & pinion 133, through hole 123c of the second hand wheel 123, and through hole 134c of the minute hand wheel (134d, 134).
e), the through holes 136c (136d, 136) of the hour wheel 136.
When e) overlaps, the detection light emitted from the light emitting element 142 is received by the light receiving element 144, and outputs that the second hand, the minute hand, and the hour hand are pointing to the hour and the like.

Further, the light emitting element 142 is
2 is disposed in a mounting recess 112c as a first arranging portion formed so as to open to the outside of the second mounting recess 112c, and a bottom surface of the mounting recess 112c has a circular through hole 112d having a predetermined diameter.
Is open. Since the circular through-hole 112d has a property that the detection light emitted from the light emitting element 142 expands in a divergent shape, the circular through hole 112d blocks the light in the expanded portion and allows only the converged light to pass through to prevent erroneous detection. It is to be. Similarly, the light receiving element 144 is connected to the lower case 11.
1 is provided in a mounting recess 111c as a second placement portion formed so as to open to the outside of the mounting recess 1, and a circular through hole 111d having a predetermined diameter is formed on the bottom surface of the mounting recess 111c.
Is open. The circular through hole 111d allows only light emitted from the light emitting element 142 and passing through the through hole to pass as much as possible, thereby preventing erroneous detection.

When the first fifth wheel 122, the third wheel 133, the second hand wheel 123, the minute hand wheel 134, and the hour wheel 136 are assembled, the predetermined positioning pins are used for positioning the circular through hole 111d of the lower case 111. Assembling is performed sequentially so as to penetrate the respective through holes used and the circular through hole 112d of the upper case 112. After the upper case 112 and the lower case 111 are joined and integrated, the positioning pin is pulled out, and the light emitting element 142 is mounted in the mounting recess 112c where the through hole 112d is located.
The light receiving element 144 is mounted in the mounting recess 111c where 1d is located.

Thus, the through holes 112d and 111d
d is completely closed, and the upper case 112 and the lower case 11
External light can be prevented from entering the internal space defined by 1. Therefore, erroneous detection due to intrusion of external light can be prevented, and since the positioning hole at the time of assembly and the through hole for light detection are also used, compared to the case where these holes are separately provided. The apparatus can be centralized and downsized.

As shown in FIGS. 2 and 3, the manual correction system 150 includes a minute wheel 135 that meshes with the small diameter gear 134b of the minute hand wheel 134 and the large diameter gear 136a of the hour hand wheel 136. A manual correction shaft 151 having a gear 151a meshing with the large diameter gear 135a of the reverse wheel 135. The manual correction shaft 151 is connected to the upper case 1
12, a head 151b to which a user can directly touch a finger, and a projection formed in the lower case 111 through the opening 112e formed in the upper case 112 and extending from the head 151b. A gear 151a is formed in a lower region of the pillar 151c.

The manual correction shaft 151 is configured to rotate in the same phase as the minute hand wheel 134. When the minute hand wheel 134 is driven by the second drive system 130, the manual correction shaft 151 passes through the minute wheel 135. When the second drive system 130 is not operated, the head 151 rotates in phase with the minute hand wheel 134.
By rotating b with a finger, the pointer position can be manually corrected.

As described above, the second hand shaft 12 of the second hand wheel 123
3b is inserted into the minute hand pipe 134p of the minute hand wheel 134,
Since the minute hand pipe 134p of the minute hand wheel 134 is inserted through the hour hand pipe 136p of the hour hand wheel 136, the second hand wheel 1
23, the minute hand wheel 134, and the hour hand wheel 136 share a common rotation center axis.
The second hand is driven to rotate once every 60 seconds, the minute hand is rotated once every 60 minutes, and the hour hand is rotated once every 12 hours.

As shown in FIG. 15, a first index for positioning extending a predetermined width in the radial direction is provided at the tip of the minute hand pipe 134p of the minute hand wheel 134 and the tip of the hour hand pipe 136p of the hour hand wheel 136. And a groove 136g as a second index. The grooves 134g and 136g are set to indicate a predetermined time, for example, 12:00 when aligned in a straight line.

By providing such a positioning index, the minute hand 134 and the hour hand 136 can be moved to the lower case 111.
And even after being surrounded and covered by the upper case 112, if the grooves 134g and 136g are aligned, it can be understood that it indicates the approximate time set in advance. The hour hand can be easily attached, other alignment and position confirmation steps are not required, and the production time and inspection time on the production line and the inspection line can be reduced. Note that the positioning index is not limited to the above-described groove, and may be a mark such as a spot.

Next, the operation according to the above configuration is performed by the control circuit 1
4, the time correction and display control operation at the time of forced reception will be described with reference to FIGS. 16, 17, 18, and 19. FIG.

For example, when the reset / forced reception switch 12 is turned on by the user, various states are returned to the initial state in the control circuit 14, and a forced correction mode is set (ST1). Then, the pointer position is detected (S
T2).

At this time, since the reset / forced reception switch 12 is turned on, for example, the control circuit 14
Supplies driving power to the standard radio signal receiving system 11 from
A forced reception operation of the standard radio signal is performed (ST3). Specifically, in the standard radio signal receiving system 11, a pulse signal S11 according to the receiving state is generated from the long wave receiving circuit 11b and output to the control circuit 14.

In the control circuit 14, as shown in FIG.
A pulse signal S1 indicating the reception state of the received standard radio signal
1 is compared with a predetermined reference range, and a code pulse is detected (ST301). When the code pulse is detected, the head of the data is detected (ST3).
02). Then, code reading is performed (ST30).
3) While the time code is being read by the control circuit 14 during the reading, the control signal CTL ₁ is read every time the reading of the read data is completed, specifically, the reading of the hour / minute data, the total date data, and the year / day data. Is output to the second hand stepping motor 121 via the buffer 17 and the second hand 202
Is driven and stopped at the 20-second position, the 40-second position, or the 60-second position. Then, when the code reading of all the digits and the display operation have been completed, data conversion is performed (ST304), and the process proceeds to step ST4 in FIG.

The code reading operation in step ST303 is specifically performed as shown in FIG.

That is, first, the sampling of the code pulse is performed (ST3001), and the second hand 2 described later in detail.
02, the display of the received data reading process is performed (ST3002). Next, the code pulse width is determined (ST3003). If it is the end of one pulse (ST3004), it is determined whether or not the creation of the hour and minute digits has been completed (ST3005). If it is determined in step ST3005 that the creation of the hour and minute digits has not been completed, the creation of the hour and minute digits is performed (ST3006), the display flag is set in the data margin, and the display flag is set in the data portion. Reset (ST300
7), the process proceeds to a process of step ST3001. In addition,
In the process of creating the hour and minute digits, data is written to the memory, and after the data is written to the memory, it is also performed while waiting for timing.

On the other hand, if it is determined in step ST3005 that the creation of the hour and minute digits has been completed, it is determined whether the creation of the total day digits has been completed (ST3008). If it is determined in step ST3008 that the creation of the total day digits has not been completed,
A total day digit is created (ST3009), a display flag is set in a data margin portion, and a reset is made in a data portion (ST3010), and the process proceeds to step ST3001. In addition, in the process of creating the total day digits,
After the data is written to the memory, and the data is written to the memory, the operation is also performed while waiting for timing.

On the other hand, if it is determined in step ST3008 that the creation of the total day digits has been completed, it is determined whether the creation of the year and day digits has been completed (ST3011). If it is determined in step ST3011 that the creation of year / day digits has not been completed,
The year / day digits are created (ST3012), the display flag is set in the data margin, the data flag is reset (ST3013), and the process proceeds to step ST3001. In the process of creating year / day digits,
After the data is written to the memory, and the data is written to the memory, the operation is also performed while waiting for timing.

Then, in step ST3011,
If it is determined that the year and day digits have been created,
It waits until the 0th second (ST3014), and proceeds to the process of step ST304 in FIG. In step ST304, data conversion is performed, and step ST4 in FIG.
Move to processing from.

The second hand display process in step ST3002 is specifically performed as shown in FIG. That is, first, it is determined whether or not it is a data margin portion (ST3101). In step ST3101,
If it is determined that it is the data margin, it is determined whether or not the creation of the hour and minute digits has been completed (ST31).
02) If it is determined that it is not a data margin portion, the process proceeds to step ST3003 in FIG.
If it is determined in step ST3102 that the creation of the hour and minute digits has been completed, it is determined whether or not the display at the 20-second position has been completed (ST31).
03) If it is determined that the creation of the hour and minute digits has not been completed, the flow shifts to the process of step ST3003 in FIG.

If it is determined in step ST3103 that the display at the 20-second position has been completed, it is determined whether or not the creation of the total day digits has been completed (S3).
T3104). If it is determined in step ST3104 that the creation of the total day digits has been completed, it is determined whether the display at the 40-second position has been completed (S3).
T3105) If it is determined that the creation of the total date digits has not been completed, the flow shifts to the process of step ST3003 in FIG. If it is determined in step ST3105 that the display at the 40-second position has been completed,
It is determined whether the creation of the day of the week digit has been completed (S
T3106). If it is determined in step ST3106 that the creation of the year and day digits has been completed, it is determined whether or not the display at the 60-second position has been completed (S3).
T3105) If it is determined that the creation of the year / day digits has not been completed, the flow shifts to the process of step ST3003 in FIG. Then, in step ST3107,
If it is determined that the display at the 60-second position has been completed, the process shifts to the process of step ST3003 in FIG.

Further, in step ST3103, 2
If it is determined that the display at the 0 second position has not been completed,
Alternatively, if it is determined in step ST3105 that the display at the 40-second position has not been completed, or if it is determined in step ST3107 that the display at the 60-second position has not been completed, the motor pulse is turned on.
Is determined (ST310).
8). In step ST3108, the motor pulse O
If it is determined not to become N is a motor pulse output pattern is set (ST3109), the motor pulse is a drive signal CTL ₁ is outputted (ST 311
0).

On the other hand, if it is determined in step ST3108 that the motor pulse is ON, the motor pulse is temporarily set OFF (ST311
1) The second motor pulse counter is counted up (ST3112). When the number of pulses reaches a predetermined number (ST3113), each display completion flag is set, and the flow shifts to the process of step ST3003 in FIG.

Then, after the reception operation in step ST3 of FIG. 16, if the reception state is within the reference range and the mode is not the button correction mode (ST4, ST5), fast-forward correction of the hands for analog display of time is performed. (ST6). In the fast-forward correction of the hands, the second hand stepping motor 121 and the hour / minute hand stepping motor 131 are rotationally driven at fast-forward according to the value of the internal counter, and the hands position is corrected to the time position.

When one second has elapsed (ST7),
In the control circuit 14, the time counter is counted up (ST8), and the mode shifts to the normal correction mode in the normal hand operation (ST9).

Next, from the progress display of the data reading process by the second hand 202 at the time of the receiving operation, for example, the hour / minute data can be normally received, and the total date and the year / day of the week data can be received. If it is determined that there is, in step ST10, it is possible to select whether or not to partially correct. Users who choose to partially modify
The calendar correction switch 22 is turned on (ST11), calendar data is set (ST12), and the calendar display on the liquid crystal display panel 30 is corrected (ST13). At this time, for example, when the time is corrected, after the time correction by digital display is completed, the control signals CTL ₁ , C
TL ₂ is supplied via a buffer 17 to a second hand stepping motor 121 and an hour / minute hand stepping motor 131.
And the pointer position is corrected to the time position corresponding to the corrected time.

In step ST10, when partial correction is not selected and the mode is not the button correction mode (ST14), it is determined whether or not the reception time is set in advance. (ST15) If the set time, the standard radio signal is received (ST1).
6). The receiving operation in step ST16 is described in FIGS.
Since the processing is performed in the same manner as the processing of step ST3 described in relation to the above, the detailed description is omitted here. Then, when the receiving operation of step ST16 is completed, the process proceeds to step ST5.

Further, step ST4 or step S
At T14, when the correction switch 21 is turned on to shift to the button correction mode, control as shown in FIG. 20 is performed (ST17, ST18). That is, if the correction digit is not determined, the digit to be corrected on the liquid crystal display panel 30 blinks (ST1701, ST1702). Here, when the correction switch 21 is turned off (ST170
3) If the up switch 23 is turned on (ST1)
704), and then step feed is performed (ST1705).
When the up switch 23 is pressed for 2 seconds or more (ST1706, ST1707), fast forward is performed (ST1706).
1708, ST1709), the corresponding digit is corrected, and the process returns to step ST1704.

If it is determined in step ST1704 that up switch 23 is not turned on, and down switch 24 is turned on (ST1710),
First, the step is returned (ST1711). If the down switch 24 is pressed for 2 seconds or more (ST17)
12, ST1713), and fast rewind (ST1714, ST1714).
(ST1715), the corresponding digit is corrected, and the process returns to step ST1710.

In step ST1710, it is determined that the down switch 24 has not been turned on, and if the preset automatic release time has elapsed with the correction switch 21 not being turned on (ST1717), the corrected time is displayed on the liquid crystal display. Digital display is performed on panel 30 (ST1718). Then, the same pointer fast-forward correction as in step ST9 is performed (ST1719). If the correction switch 21 is not turned on (ST1720), the correction time information and calendar information such as year, month and day of the week are displayed in a calendar (ST1721). ). As described above, in the control circuit 14, during fast-forwarding of the pointer after button correction (during follow-up),
Button modification is accepted again (ST1720). After that, the processing shifts to the processing of step ST7 shown in FIG.

The position detection of the pointer in step ST2 is performed, for example, as shown in FIG. That is, the drive signal DR ₂ is output from the control circuit 14 at the low level of the drive circuit 18. Thus, the transistor Q ₂ is turned on, the light emitting element 142, i.e. light detected from the light-emitting diode is emitted (ST 201). Subsequently, the control signal CTL ₁ is outputted second hand stepping motor 121 is pulse driven (ST 202), the light receiving element 144 i.e. the phototransistor is turned on, the low detection signal DT ₁ from the high level (power supply voltage V _CC level) It is determined whether or not the level has been switched (ST2).
03).

Here, when the detection signal DT ₁ from the phototransistor is held at the high level, every time the number of pulses for performing the step drive is added, the detection signal DT ₁ from the phototransistor is added. Is switched from high level (power supply voltage V _CC level) to low level (ST204 to ST20).
6). Then, the detection signal when the DT ₁ output is not switched from the high level (power supply voltage V _CC level) to a low level, the hour and minute hands for step ping the motor 131 is one step from the phototransistor be reached the number of pulses 9 (Pulse) drive (ST207), and then the second hand stepping motor 121 is step-driven again (ST2).
02) The second hand wheel 123 is rotationally driven.

On the other hand, in step ST203,
Signal DT by the transistor ₁ From high level
If it is determined that the level has been switched to the low level, the second hand wheel 12
3 is fast-forwarded (ST208).
Comparison with the previously stored output pattern is performed (S
T209). Output pattern and memory obtained as a result of comparison
If the output pattern does not match, the process proceeds to step S
Returning to T208, the second hand wheel 123 is fast-forwarded again.

On the other hand, if the obtained output pattern and the stored output pattern match, at that time (when the level of the detection signal DT ₁ is not switched to the low level by the phototransistor even at the fifth step, the next step is performed). the output of the phototransistor is in turn changed the time) to the low level, the output of the control signal CTL ₁ is stopped, the circuit driving the second hand wheel 123 is stopped. And second hand wheel 12
3 stops at the return-to-zero position (ST210). At this time, the second hand is corrected to a position at a predetermined time, for example, the hour (0 second).

Subsequently, the control signal CTL is output from the control circuit 14.
₂ is output, only the hour / minute hand step motor 131 is pulse-driven at a predetermined output frequency, and the minute hand wheel 134 is fast-forwarded (ST211). Then, the output pattern from the phototransistor is compared with the output pattern stored in advance in the control circuit 14 (ST212).
As a result of the comparison, if the obtained output pattern does not match the stored output pattern, the process returns to step ST211 and the minute hand wheel 134 is fast-forwarded again.

On the other hand, as a result of the comparison in step ST212,
If the resulting output pattern and the stored output pattern matched, at which time, the control output signal CTL ₂ is stopped, when it minute hand stepping motor 131 is stopped, the minute hand wheel 134 and the hour hand wheel The driving of 136 is stopped (ST213).

Here, the time correction by comparing the output pattern with a previously stored pattern is performed by adjusting the time to one of three types of patterns. That is, as shown in FIG. 22A, the output pattern of the phototransistor by the minute hand wheel 134 is such that two narrow B portions and one wide A portion are alternately set as the OFF width at which the light shielding portion acts. As shown in FIG. 22B, the output pattern of the phototransistor by the hour wheel 136 has three types of OFF widths where the light-shielding portion acts, as shown in FIG. Are alternately appearing at predetermined intervals, and an output pattern obtained by combining the two patterns is a pattern in which the D, B, and A parts are combined, a pattern in which the E, B, and A sections are combined, as shown in FIG. A pattern in which a part B and a part A are combined and a pattern in which a part C, a part B and a part A are combined appear at predetermined intervals. In addition, the part of the pattern which is turned on in the pattern shown in FIG. 22 is actually a toothless pattern because there is a part which is turned off by the light shielding portion of the third wheel 133.

Therefore, when a pattern composed of a combination of the part D, the part B and the part A is confirmed, for example, at 4:00.
The time when a pattern composed of a combination of the minutes E, E, B and A is confirmed is, for example, 8:00, C, B
If a pattern composed of a combination of the part A and the part A is set in advance as, for example, 12:00, the hour / minute hand stepping motor 131 is stopped when any of these patterns is detected. The minute hand 134 and the hour wheel 136, that is, the minute hand 20
3 and the hour hand 204 can be adjusted to a predetermined time.

The hour / minute hand stepping motor 13
1 is stopped, and the drive signal D
R ₂ is switched to a high level. Thus, the transistor Q ₂ is turned off in the drive circuit 18, light-emitting diode is stopped (ST 214), and ends the time adjustment operation.

As described above, in the operation of correcting the hands, the minute hand 134 and the hour hand 136 use the arc-shaped through hole, that is, the long hole as the through hole for passing the detection light. Is turned on, the position detection time can be shortened, and as a result, the time for correcting the time of the second hand can be shortened. In addition, since the hour hand wheel 136 is provided with three types of light shielding portions C, D, and E,
The time can be corrected by detecting any one of the three positions, and the position can be detected only by rotating the hour wheel 136 having the slowest rotational speed by approximately 1/3 of the conventional one. The time for correcting the time of the hour hand 204 can be reduced.

As described above, according to the present embodiment, during the reading of the time code at the time of reception, every time the reading of data is completed, for example, hour / minute data, total date data, and year / day data is completed. , The control signal CTL ₁ is supplied via the buffer 17 to the stepping motor 121 for the second hand.
, And the control circuit 14 for driving the second hand 202 to a position corresponding to each data in advance and stopping the operation is provided, so that there is an advantage that the progress of the correction process can be confirmed at the time of time correction. In addition, even when all data cannot be read, it is possible to select whether or not to perform partial correction, and there is an advantage that partial correction is possible. In addition, the output of the control signal during the data reading process is performed while reading a blank area where no data exists in the boundary area between the data, so that the influence on the reception sensitivity of the standard code can be prevented.

It is also possible to combine the progress of the correction processing with the second hand display, for example, by turning on or blinking an LED. Needless to say, the division and display position of data are not limited to this embodiment.

[0107]

As described above, according to the present invention,
There is an advantage that the progress of the correction process can be checked at the time of time correction.
In addition, even when all data cannot be read, it is possible to select whether or not to perform partial correction, and there is an advantage that partial correction is possible. In addition, the output of the control signal during the data reading process is performed while reading a blank area where no data exists in the boundary area between the data, so that the influence on the reception sensitivity of the standard code can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a signal processing circuit of a radio-controlled timepiece according to the present invention.

FIG. 2 is a cross-sectional view showing an entire configuration of an embodiment of a hand position detecting device for a radio-controlled timepiece according to the present invention.

FIG. 3 is a plan view of a main part of the pointer position detecting device according to the present invention.

FIG. 4 is a front view showing the appearance of the radio-controlled timepiece of FIG. 1;

FIG. 5 is a diagram for explaining a criterion for determining a received radio wave state before a return-to-zero operation in the initial correction mode in the control circuit according to the present invention.

FIG. 6 is a diagram illustrating an example of a time code of a standard time radio signal.

FIG. 7 is a first diagram for driving a second hand which is a part of an automatic correction timepiece.
It is a top view which shows a drive system.

FIG. 8 is a plan view showing a second drive system that drives a minute hand and an hour hand, which are part of an automatic correction timepiece.

FIG. 9 is a plan view showing a first fifth wheel that forms part of a first drive system that drives the second hand.

FIG. 10 is a plan view showing a second hand wheel forming a part of a first drive system that drives the second hand.

FIG. 11 is a plan view showing another example of the second hand wheel forming a part of the first drive system for driving the second hand.

FIG. 12 is a plan view showing a third wheel that forms part of a second drive system that drives the minute hand and the hour hand.

FIG. 13 is a plan view showing a minute hand wheel that forms a part of a second drive system that drives the minute hand and the hour hand.

FIG. 14 is a plan view showing an hour wheel that forms part of a second drive system that drives the minute hand and the hour hand.

FIG. 15 is an end view showing the tips of the minute hand pipe and the hour hand pipe.

FIG. 16 is a flowchart illustrating a time correction and display control operation at the time of forced reception in the control circuit of the radio-controlled timepiece according to the present invention.

FIG. 17 is a flowchart illustrating a receiving operation of the radio-controlled timepiece according to the present invention.

FIG. 18 is a flowchart for explaining a code reading operation in the receiving operation of the radio-controlled timepiece according to the present invention.

FIG. 19 is a flowchart illustrating a second hand display operation in the reception operation of the radio-controlled timepiece according to the present invention.

FIG. 20 is a flowchart illustrating an operation in a button correction mode in the control circuit of the radio-controlled timepiece according to the present invention.

FIG. 21 is a flowchart for explaining a pointer position correcting operation in the control circuit of the radio-controlled timepiece according to the present invention.

FIG. 22 is a diagram showing an output pattern of a minute hand wheel, an hour hand wheel, and a detecting means based on a combination of both in a correction operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Signal processing system circuit 11 ... Standard radio wave signal receiving system 12 ... Reset switch 13 ... Oscillation circuit 14 ... Control circuit 15 ... Drive circuit 16 ... Light emitting element as notification means 17 ... Buffer circuit 18 ... Drive circuit 20 ... Correction switch Group 21: Correction switch 22: Calendar switch 23: Up switch 24: Down switch 100: Watch body 111: Lower case (second case) 111c: Mounting recess (second arrangement part) 111d: Circular through hole 112: Upper case ( 1st case) 112c mounting recess (first arrangement portion) 112d circular through hole 113 middle plate 120 first driving system 121 second stepper motor (first driving source) 122 first fifth wheel ( First transmission gear, first detection gear 122c: through hole 123: second hand wheel (second detection gear, first pointer) 123c: through hole 123d: positioning light shielding portion 123e: urging spring 123f: notch hole 123g ... notch hole 130: second drive system 131: minute hand system stepping motor (second drive source) 132: second fifth Wheel 133: Third wheel (second transmission gear, third detection gear) 133c: Through hole 134: Minute hand wheel (fourth detection gear, second pointer wheel) 134c: Arc-shaped hole 134d: Arc-shaped hole 134e: arc-shaped through hole 134g: groove (first index) 134p: minute hand pipe 135: minute wheel 136: hour hand wheel (fifth detection gear, second hand wheel) 136c: arc-shaped through hole 136d: arc-shaped holes 136e ... arcuate apertures 136 g ... groove (second index) 136p ... hour pipe 140 ... light detecting sensor (detecting means) 142 ... light emitting element 144 ... light receiving element 150 ... manual correction system V _CC ... power Pressure C ₁ -C ₃ ... capacitor R ₁ to R ₅ ... resistance element

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F002 AA05 AA06 AC01 AD03 AD06 AD07 BA04 BB04 EA01 EB01 ED01 ED02 ED04 ED05 EE00 EE04 EF01 EF02 FA09 FA16 GA02 GA04 GA06 2F083 AA01 AA04 BB02 CC02 CC05 CC06 CC07 DD03 HH04 JJ00 JJ11

Claims (5)

[Claims] 1. An automatic correction clock for performing analog time display by hands, receiving a standard code in which a plurality of data including at least time are arranged in a time-series manner, and correcting a display time, according to a control signal. A pointer driving means for driving the pointer; and, while receiving the standard code, sequentially read data included in the standard code, output a control signal to the pointer driving means, and read one pointer for each data read. Control means for stopping at each position previously associated with, and after completing all reading processing of the standard code, outputting the control signal to the pointer driving means to correct the pointer position at a time corresponding to the input standard code; Automatic correction clock with a. 2. The standard code includes a margin area where no data exists in a boundary area between data, and the control means outputs the control signal to the pointer driving means while reading the margin area. 2. The automatic correction timepiece according to claim 1, wherein said one hand is driven. 3. The automatic correction timepiece according to claim 1, further comprising a display means capable of digital display, and a correction switch for correcting display information of said display means. 4. The control means receives an interruption of the correction switch, operates the correction switch to complete the time correction by digital display, and then outputs the control signal to the pointer driving means to correct the time. 4. The automatic correction timepiece according to claim 3, wherein the hand position is corrected to a time position corresponding to the time. 5. The automatic correction timepiece according to claim 1, wherein said control means causes the hand position to be corrected in a fast-forward manner.