JP4083844B2 - Electronic watch and electronic watch transmission / reception system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pointer-type timepiece that performs data communication with an external device.
[0002]
[Prior art]
In recent years, watches have become more multifunctional, and many systems having various data in ICs inside watches have come to be seen. For example, in a watch with a sensor, setting data for adjusting the sensitivity and offset of the sensor at the time of manufacture, and various measurement data obtained by sensor operation are stored inside the watch when actually using the watch. For example, the measurement data may be displayed as needed by the user.
[0003]
Even in a timepiece having no additional function such as a sensor, it is almost always necessary to adjust the frequency of a reference signal source incorporated in the timepiece when the timepiece is completed.
[0004]
For example, in a watch having a system in which setting data at the time of frequency adjustment is held in a memory element built in the IC, the frequency adjustment is performed in the state of the circuit board on which the IC and the crystal unit are mounted, or in the state of movement. In many cases, data is set in the IC by using a writing system having an electrical contact with the circuit board.
[0005]
On the other hand, when it is desired to perform frequency adjustment with higher accuracy, the above-described method causes a problem. In other words, when a circuit board or movement is incorporated into the watch case, the oscillation frequency of the reference signal source shifts due to the effects of stray capacitance, etc. The frequency may change.
[0006]
  In such a case, ideally, it is ideal to adjust the frequency after incorporating the movement into the watch case and completely closing the case back.. HoweverHaving an electrical contact with a movement built into the watch case impairs the waterproof function, lowers noise resistance, and has many limitations such as design.
[0007]
Therefore, in order to write the frequency adjustment data to the IC while being incorporated in the case, it is necessary to transfer the data in a non-contact manner to the IC on the circuit board.
[0008]
Also, in a watch equipped with a sensor, when it is desired to transfer measurement data to an external device, it is normally performed with a contact point. However, as described above, this causes various problems as a watch.
[0009]
  Applicant for these issuesBut, WO94 / 16366InThe method already disclosed is to use the motor coil of the pointer type watch and transfer the data to and from the external device electromagnetically based on the timing signal from the watch side. Transfer of data does not affect the clock movement.
[0010]
[Problems to be solved by the invention]
  According to the conventional example, it is possible to input data from the outside of the watch without affecting the hand movement of a normal watch.sowear. However, when inputting data by applying a magnetic field from the outside to the gap between the step movement of the watch, if a magnetic field stronger than necessary is given, not only will it affect the movement of the hands, but in some cases, depending on the magnetic field applied from the outside It is also conceivable that the pointer driving motor is rotated.
[0011]
In addition, if the circuit is configured to increase the sensitivity of the pointer-type watch and receive data, etc. even when the external magnetic field is weak, malfunctions may occur due to magnetic noise from the outside when the watch is normally carried. It is also possible to wake up.
[0012]
[Means for Solving the Problems]
In order to solve the problems related to the conventional technology described above, in the present invention, data transmission means for generating a data signal,
coilIn an electronic timepiece data receiving system comprising an electronic timepiece having received data receiving means for receiving a data signal from the data transmitting means using
The electronic timepiece has timing signal generating means for generating a timing signal,
Further, the data transmission means includes a timing signal receiving means for receiving a timing signal output from the coil,
The data transmission means transmits a data signal in synchronization with the received timing signal,
The data receiving means performs data reception by setting at least one end of the coil to a high impedance state at the time of data reception,
The time to enter the high impedance state during data reception is set to be shorter than the data signal reception rate.It is characterized by that.
  In addition, the present invention
Data transmission means for generating a data signal;
In a data transmission / reception system of an electronic timepiece comprising an electronic timepiece having a reception data receiving means for receiving a data signal from the data transmission means using a coil of the electronic timepiece,
The electronic timepiece has timing signal generating means for generating a timing signal,
Further, the data transmission means includes a timing signal receiving means for receiving a timing signal output from the coil,
The data transmission means transmits a data signal in synchronization with the received timing signal,
And having a receiving coil for receiving timing signals and a transmitting coil for transmitting data
It is characterized by.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of the present invention, wherein 1 is an electronic circuit 11 having a circuit for receiving data and a pointer-type timepiece having a motor drive coil 12. 2 is a transmission / reception coil 22 and a transmission / reception circuit.21Is a data transmission means. Here, the pointer-type timepiece 1 originally includes a driving wheel train, hands, and the like as constituent elements, but since these elements are not directly involved in the present embodiment, illustration and description thereof are omitted.
[0014]
2 is a block diagram showing in detail the circuit configuration of the pointer type timepiece 1, and FIG. 3 is a block diagram showing in detail the circuit configuration of the data transmission means 2. As shown in FIG. Further, FIGS. 10, 11 and 12 are time charts showing the operation of the present embodiment.
[0015]
In FIG. 2, 101 is an oscillation circuit A, 102 is a frequency dividing circuit A and 103 that divides the oscillation signal OSC1 of the oscillation circuit to a frequency necessary for this system, and 103 is a drive signal (for driving the motor of the pointer type timepiece). (Hereinafter referred to as SP), 104 is a motor driver for outputting SP to the motor drive coil 12, 105 is a timing control circuit for controlling various timings when receiving data, and 106 is data A receiving circuit, 108 is an OR circuit, and 109 and 110 are AND circuits.
[0016]
In FIG. 3, 201 is an oscillation circuit B, 202 is a frequency dividing circuit B, 203 is a bandpass filter, 204 is a control circuit, 205 is a mask circuit, 206 is a phase inverting circuit, 207 is a transmission data creation circuit, and 208 is a reception circuit. , 209 are transmission driver circuits, 210 is a switch, and 211 is a D-FF.
[0017]
In a normal state, the pointer-type timepiece 1 outputs a driving pulse SP to the motor driving coil 12 at a constant cycle for driving the pointer. In FIG. 2, the reference signal OSC1 generated by the oscillation circuit A101 is frequency-divided to a desired frequency by the frequency dividing circuit A102, and the waveform shaping circuit A generates SP.
[0018]
FIG. 6 is a circuit diagram showing a configuration of the motor driver 104. In FIG. 6, 1041 is a T-FF, 1042 and 1043 are AND circuits, and 1044 is a motor buffer. Reference numeral 1045 denotes a motor buffer whose output is in a high impedance state when the signal STB is “H”.
[0019]
The output of T-FF is inverted in synchronization with the fall of SP. As a result, SP is alternately output from the AND circuit 1042 and the AND circuit 1043, and as a result, SP is alternately output to O1 and O2. As a result, the motor rotates and the pointer is driven. In this embodiment, the drive signal SP is used as a timing signal as in the conventional example. Therefore, the waveform shaping circuit 103 functions as the timing signal generating means.
[0020]
When data is transferred from the data transmission means 2 to the pointer-type timepiece 1, when the switch 210 is turned on while the motor drive coil 12 and the transmission / reception coil 22 are brought close to each other, the signal E which is the QB output of the D-FF 211 is “H”. The control circuit 204 becomes active.
[0021]
In this state, when the motor drive signal SP is output and a current flows through the motor drive coil 12, the timing signal TX is output from the motor drive coil 12 as a magnetic signal. This timing signal TX is received by the transmission / reception coil 22 and sent to the reception circuit 208. When receiving the timing signal TX, the receiving circuit 208 outputs a trigger signal TG.
[0022]
When receiving the trigger signal TG in the active state, the control circuit 204 sets the reset signal Rst to “L”. As a result, the reset of the frequency dividing circuit B202 is released, and the frequency dividing circuit B202 performs the frequency dividing operation of the oscillation signal output from the oscillation circuit B201.
[0023]
Here, the frequency of the square wave Fdiv output from the frequency dividing circuit B202 is set to fHz. When the pass frequency of the band pass filter 203 is configured to be fHz which is the same frequency as the square wave Fdiv, the band pass filter 203 outputs Fsin which is a sine waveform.
[0024]
The transmission data creation circuit 207 has a configuration shown in FIG. In FIG. 4, 2071 is a shift register, 2072 is an 8-bit transmission data setting switch group, and 2073 is an AND circuit. In the state where the signal Rst is “H”, the setting data of the switch group 2072 is preset in the shift register 2071.
[0025]
The control circuit 204 outputs an “H” signal to the transmission timing signal DE from the timing T1 when a predetermined time has elapsed after receiving the trigger signal TG to the timing T2. Here, the time interval from T1 to T2 is eight periods of the signal Fdiv.
[0026]
When the transmission timing signal DE becomes “H”, the square wave Fdiv is input to the shift register 2071 as a clock. The shift register 2071 outputs the previously preset transmission data as the data signal SMD in synchronization with the negative edge of the square wave Fdiv.
[0027]
The phase inversion circuit 206 has a circuit configuration as shown in FIG. In FIG. 5, reference numeral 2061 denotes an operational amplifier, 2062 denotes a switch that is turned on when the data signal SMD is “H”, and turns off when the data signal SMD is “L”.
[0028]
The circuit shown in FIG. 5 operates as a voltage follower when the switch 2062 is on and as an inverter when it is off. Therefore, when the data signal SMD is “H”, the Fsin input to the phase inversion circuit 206 has the same phase, and when the data signal SMD is “L”, the Fsin input to the phase inversion circuit 206 has an opposite phase and Fsin. Is output as'. That is, Fsin is phase-modulated by 180 degrees in accordance with the data signal SMD by the phase inversion circuit 206 to become Fsin ′.
[0029]
The mask circuit 205 passes the Fsin ′ signal as Fsen while the transmission timing signal DE is “H”. This Fsen is sent to the transmission / reception coil 22 via the driver circuit 209 and output as a transmission signal DX.
[0030]
The control circuit 204 sets the signal DE to “L” and the signal Rst to “H” at the timing of T2. When the signal Rst becomes “H”, the QB of the D-FF 211 becomes “L”, and the control circuit 204 becomes inoperative. Further, the frequency dividing circuit B202 is reset, and the data transmitting means 2 ends its operation.
[0031]
Next, a procedure for receiving the data signal DX output from the data transmission means 2 by the pointer type timepiece 1 will be described with reference to a time chart FIG. Data reception starts after the motor drive signal SP is output and a predetermined time T1 has elapsed. The timing control circuit 105 applies an “H” signal to the STBF which is the reception timing signal at a quarter cycle of the signal Fdiv after the timing T1, that is, at the timing of T3, that is, at a timing of T4. The “H” signal is output to the STBB with a width of ΔT.
[0032]
When STBF and STBB are “H” timing, the output of the motor buffer 1045 is in a high impedance state. At this timing, the data signal DX is output from the data transmission means 2 as described above.
[0033]
Here, assuming that the motor buffer 1045 is in a high impedance state during the transmission period of the data signal DX, the induced voltage induced in the O2 of the motor drive coil 12 by the data signal DX becomes Vr 'in FIG. However, in actuality, the motor buffer 1045 is in a high impedance state only when STBF or STBB is at “H” level, and further, at this timing, the output of the motor buffer 1044 is “L” or less. Since this signal cannot be detected, a signal such as Vr in FIG.
[0034]
When the data receiving circuit 106 detects that Vr becomes “H” at the timing of T3, ie, STBF is “H”, SBK is set to “L”. Therefore, after this timing, the motor buffer 1045 does not become high impedance at the timing when the STBB is output. That is, the data reception operation is prohibited at the STBB timing.
[0035]
The data reception circuit 106 continues the reception operation at the STBF timing. When the transmission data DX is in phase with the period A, “H” is detected in Vr, but the signal DX is modulated by the data signal SMD, and the timing when Fsin ′ is in the opposite phase, that is, in FIG. In the section, “H” is not detected in Vr.
[0036]
Therefore, it is possible to receive “H” and “L” of the transmission data SMD by determining whether Vr is “H” or “L” at the timing of STBF.
[0037]
If the positional relationship between the motor drive coil 12 and the transmission / reception coil 22 when the phase of Fsen and the phase of Vr ′ are as shown in FIG. 12, the motor drive coil 12 and the data transmission / reception coil 22 are reversed. When the positional relationship of FIG. 8 is shown in FIG. 8, the phase of Fsen and the phase of Vr ′ are as shown in FIG.
[0038]
In such a case, the signal Vr does not become “H” at the STBF timing but becomes “H” at the STBB timing, and the data receiving circuit 106 sets SFK to “L” at this time. Therefore, after this timing, the motor buffer 1045 does not become high impedance at the timing when STBF becomes “H”.
[0039]
Data can be received in the same manner as described above by determining the signal level of Vr at the STBB timing. Therefore, according to this system, data can be reliably received regardless of the magnetic positional relationship between the motor drive coil 12 and the transmission / reception coil 22.
[0040]
Further, when the “H” level of the signal Vr is not detected at both the STBF and STBB timings during the period A in FIG. 12, the data receiving circuit 106 sets both SFK and SBK to “L” as shown in FIG. Subsequent reception operations are prohibited.
[0041]
When the transmission output of the data transmission means 2 is small by setting at least one end of the motor drive coil to high impedance at the data reception timing, or when the distance between the pointer-type timepiece 1 and the data transmission means 2 is long, the level of the reception signal is Even if it is small, data can be received satisfactorily.
[0042]
In a pointer-type timepiece that performs step hand movement, both ends of the motor drive coil 12 are normally short-circuited while the motor is driven, that is, both ends of the motor drive coil 12 are kept at the same potential by a motor buffer. This is to prevent the motor from being turned by an external impact.
[0043]
An electromotive force induced when the motor tries to rotate due to an external force is generated, but a force in the direction opposite to the external force that tries to rotate the motor works by flowing through the motor coil. Although it is a so-called electromagnetic brake, when the output of the motor buffer 1045 is set to high impedance at the time of data reception, the current flow path is cut off and the electromagnetic brake is not used, so that the resistance to impact is weakened.
[0044]
Therefore, the timing for receiving data, that is, the time ΔT during which the motor buffer 1045 is in a high impedance state should be as short as possible. By using the means described in the present invention, the time ΔT for detection can be set short with respect to the data reception rate.
[0045]
In addition, the timing for receiving data is provided intermittently, and the time for receiving the data, that is, the time for the motor buffer 1045 to become high impedance, the time for the other time, that is, the state where both ends of the motor driving coil are short-circuited is lengthened. Therefore, it is not necessary to create a state where the electromagnetic brake is not continuously applied.
[0046]
Further, in this embodiment, when the reception signal is not detected at the initial reception timing, the subsequent detection is not performed and unnecessary detection timing is not provided. It is obvious that these contents have a great effect for preventing erroneous reception of data as well as improving impact resistance.
[0047]
  In this embodiment, the modulation of the data signal is phase-modulated by the phase inversion circuit, but the transmission waveform is as shown in FIG.5Thus, amplitude modulation data transfer is performed. FIG. 9 is a partial modification of the circuit of FIG. 3, with a configuration in which an AND circuit 212 is added and the phase inversion circuit 206 is omitted.
[0048]
According to this circuit configuration, when the data signal SMD is “L”, a signal is not output from Fsen ′, which is a so-called amplitude modulation state. However, even when the circuit configuration of FIG. The form does not change at all. Therefore, the circuit configuration of the data transmission means 2 can be simplified by eliminating the need for the phase inversion circuit.
[0049]
Furthermore, in this embodiment, an fHz signal is used as the transmission frequency of the transmission signal used by the data transmission means, but this frequency is preferably set to a frequency that is 1 / integer of 32768 Hz. This frequency is a frequency that is used in almost all watches as a reference signal source of the pointer-type timepiece. Therefore, by using a frequency that is an integral number of this frequency, the electronic circuit 11 on the side of the pointer-type timepiece 1 is specially used. It is not necessary to create a simple frequency signal, and the circuit can be simplified.
[0050]
In this embodiment, the motor drive pulse is used as the timing signal. However, a dedicated timing signal may be provided at other timings. However, it is desirable to continue outputting the timing signal periodically even when no operation is applied to the pointer-type timepiece. This means that there is no need to operate the pointer-type timepiece during data transfer, which greatly contributes to improved operability.
[0051]
In the example shown in the present embodiment, since the data transfer rate can be the same as the reference frequency for transferring data, that is, the carrier frequency, high-speed data transfer is performed even at a relatively low carrier frequency. It becomes possible.
[0052]
In the present embodiment, in the data transmission means 2, a reception coil for receiving a timing signal and a transmission coil for transmitting data are combined with one coil. This can realize the data transmission means at a low cost, but has the following disadvantages.
[0053]
The timing signal TX output from the pointer-type timepiece 1 cannot be reduced due to the nature of the pointer-type timepiece. When the timing signal TX is output at a high output, a large amount of current flows through the motor drive coil 12, which increases the current consumption of the pointer-type timepiece and causes the drive time to decrease.
[0054]
Accordingly, although the timing signal transmitted from the pointer-type timepiece 1 has a low output, a minute magnetic signal can be detected as a receiving coil of the data receiving means 2 in order to reliably receive this low output signal. It is necessary to have high sensitivity.
[0055]
In order to improve the sensitivity of the receiving coil, it is preferable to increase the number of turns of the coil or provide a core material for the coil, and use a high magnetic permeability material such as a ferrite material as the core material.
[0056]
When the sensitivity of the receiving coil is increased in this way, the reactance will inevitably increase. However, if this coil is used for transmission, the self-induction of the coil increases. When the carrier frequency and the data transfer rate are the same or close to each other as in the example, it is difficult to perform phase modulation and amplitude modulation.
[0057]
Therefore, in order to compensate for these drawbacks, it is desirable to provide a highly sensitive receiving coil and a transmitting coil having a low reactance value. FIG. 16 is a block diagram showing the configuration of the second embodiment of the present invention when the receiving coil and the transmitting coil are made independent of each other. That is, 23 is a receiving coil and 24 is a data transmitting coil. Note that the timing signal transmission from the pointer-type timepiece 1 and the data transmission method from the data transmission means are the same as those previously described, and thus the description thereof is omitted.
[0058]
In the configuration in which the receiving coil 23 and the data transmitting coil are independent as in the second embodiment, it is desirable that each coil is formed in an annular shape as shown in FIG. 17 and the center thereof is arranged on the same axis.
[0059]
Normally, the motor drive coil 12 of the pointer type timepiece has a rod shape as shown in FIG. When the annular receiving coil 23 receives the timing signal TX sent from the motor driving coil 12, the motor driving coil 12 is generated when the positional relationship between the receiving coil 23 and the motor driving coil 12 is arranged as shown in FIG. As a result, no induced current is generated in the receiving coil 23 as shown in FIG.
[0060]
When the same arrangement is adopted for the data transmission coil 24 and the motor drive coil 12, the lines of magnetic force are as shown in FIG. 21, and the output signal DX from the data transmission means 2 cannot be received by the pointer type timepiece.
[0061]
  On the other hand, when the positional relationship between the receiving coil 23 and the motor driving coil 12 is arranged as shown in FIG. 22, the lines of magnetic force generated by the motor driving coil 12 are shown in FIG.3Thus, an induced voltage is generated most efficiently in the receiving coil 23.
[0062]
    When the same arrangement is adopted for the data transmission coil 24 and the motor drive coil 12, the magnetic field lines are as shown in FIG.4Thus, the output signal DX from the data transmission means 2 can be satisfactorily received by the pointer type timepiece 1.
[0063]
The receiving coil 23 and the data transmitting coil 24 are made independent and the centers thereof are arranged on the same axis so that the arrangement relationship between the motor driving coil 12, the receiving coil 23, and the data transmitting coil 24 is determined by the data transmitting means 2 as a timing signal. When TX can be received, the setting can be made such that the pointer-type timepiece 1 can receive data.
[0064]
Accordingly, it is possible to prevent a situation in which the data signal DX cannot be received by the pointer-type timepiece 1 even though the reception of the timing signal TX is confirmed by the data receiving means 2.
[0065]
Further, the reception sensitivity of the reception circuit 208 of the data transmission means 2 and the transmission output of the transmission driver circuit 209 are adjusted, and the timing signal TX output by the pointer-type timepiece is transmitted from the data transmission means 2 more than the distance that the data transmission means 2 can receive. By setting the distance at which the pointer-type timepiece 1 can receive the output transmission signal DX to be long, the data-type signal can be received by the pointer-type timepiece 1 even though the reception of the timing signal TX is confirmed by the data receiving means 2. It is possible to reliably prevent a state in which DX cannot be received.
[0066]
Furthermore, if a circuit configuration as shown in FIG. 25 is adopted, more reliable operation can be performed. FIG. 25 is obtained by adding an output adjustment circuit 213 to the circuit of FIG. An output adjustment circuit 213 for adjusting the intensity of the transmission signal DX output from the transmission driver circuit 209 according to the intensity of the reception signal received by the reception circuit 208 is provided. When the level of the reception signal is small, the output of the transmission driver circuit 209 is provided. On the contrary, when the level of the received signal is large, the transmission driver circuit 209 is made small, so that a more reliable operation can be performed.
[0067]
  Next, an embodiment for further ensuring the operation of the present invention will be described with reference to the drawings.
FIG. 26 shows a slight modification of the data receiving means 1 of FIG.4Is a counter circuit.
[0068]
As described in the first conventional example, this embodiment also starts the operation when the switch 210 is set to the “H” level. If the timing signal TX is being output at this time, the data transmission timing T1 may be shifted from a desired position.
[0069]
    In the present invention, the counter circuit 21 is set after the switch 210 becomes “H”.4The counter circuit 214 sets the operation permission signal E of the control circuit 204 to “H” at the timing when the counter circuit 214 detects the timing signal TX transmitted from the pointer-type timepiece 1 twice. Since the subsequent operation is the same as that described in the first conventional example, it is omitted here.
[0070]
In the present invention, data can be reliably transmitted regardless of the ON timing of the switch 210 which is a switch for operating the data transmitting means 2.
[0071]
【The invention's effect】
As described above, according to the present invention, it is possible to reliably transmit data and the like from the data transmission means 2 to the pointer type timepiece 1 and to influence the pointer display which is the original function of the pointer type timepiece 1. It is possible to provide a system that eliminates the problem.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a system configuration of the present invention.
FIG. 2 is a block diagram showing a circuit configuration of the pointer type timepiece of the invention.
FIG. 3 is a block diagram showing a circuit configuration of data transmission means of the present invention.
FIG. 4 is a block diagram showing a circuit configuration of a transmission data generation circuit of the data transmission means of the present invention.
FIG. 5 is a block diagram showing a circuit configuration of a phase inverting circuit of the data transmission means of the present invention.
FIG. 6 is a block diagram showing a circuit configuration of a motor driver of the pointer type timepiece of the invention.
FIG. 7 is a diagram showing a positional relationship between a motor drive coil and a transmission / reception coil according to the present invention.
FIG. 8 is a diagram showing a positional relationship between a motor drive coil and a transmission / reception coil according to the present invention.
FIG. 9 is a block diagram showing a circuit configuration of another data transmission means of the present invention.
FIG. 10 is a time chart showing the operation of the present invention.
FIG. 11 is a time chart showing the operation of the present invention.
FIG. 12 is a time chart showing the operation of the present invention.
FIG. 13 is a time chart showing the operation of the present invention.
FIG. 14 is a time chart showing the operation of the present invention.
FIG. 15 is a time chart showing the operation of the present invention.
FIG. 16 is a configuration diagram showing another system configuration of the present invention.
FIG. 17 is a configuration diagram showing a positional relationship between a transmission coil and a reception coil according to the present invention.
FIG. 18 is a configuration diagram showing a motor drive coil of the present invention.
FIG. 19 is a top view showing the positional relationship between the motor drive coil and the transmission / reception coil of the present invention.
FIG. 20 is a side view showing a magnetic positional relationship between a motor drive coil and a reception coil according to the present invention.
FIG. 21 is a side view showing the magnetic positional relationship between the motor driving coil and the receiving coil of the present invention.
FIG. 22 is a top view showing the positional relationship between the motor drive coil and the transmission / reception coil of the present invention.
FIG. 23 is a side view showing the magnetic positional relationship between the motor driving coil and the receiving coil of the present invention.
FIG. 24 is a side view showing a magnetic positional relationship between the motor drive coil and the reception coil of the present invention.
FIG. 25 is a block diagram showing a circuit configuration of another data transmission means of the present invention.
FIG. 26 is a block diagram showing a circuit configuration of another data transmission means of the present invention.
[Explanation of symbols]
1 Pointer-type clock
2 Data transmission means
11 Electronic circuit
12 Motor drive coil
21 Transceiver circuit
22 Transmitting and receiving coil
23 Receiver coil
24 Transmitting coil
101 Oscillator circuit A
102 Frequency divider A
103 Waveform shaping circuit
104 Motor driver
105 Timing control circuit
106 Data receiving circuit
201 Oscillator circuit B
202 Frequency divider B
203 Band pass filter
204 Control circuit
205 Mask circuit
206 Phase inversion circuit
207 Transmission data creation circuit
208 Receiver circuit
209 Transmission driver circuit
210 switch
211 D-FF
212 AND circuit
213 Output adjustment circuit
214 Counter circuit

Claims (28)

Data transmission means for generating a data signal;
In a data reception system of an electronic timepiece constituted by an electronic timepiece having reception data reception means for receiving a data signal from the data transmission means using a coil ,
The electronic timepiece has timing signal generating means for generating a timing signal,
Further, the data transmission means includes a timing signal receiving means for receiving a timing signal output from the coil,
The data transmission means transmits a data signal in synchronization with the received timing signal,
The data receiving means performs data reception by setting at least one end of the coil to a high impedance state at the time of data reception,
A data transmission / reception system for an electronic timepiece, characterized in that a time for setting a high impedance state at the time of data reception is set to be shorter than a reception rate of the data signal . The data transmission / reception system for an electronic timepiece according to claim 1, wherein the data signal generated from the data transmission means is transmitted as an amplitude-modulated AC magnetic signal . The data transmission / reception system for an electronic timepiece according to claim 1, wherein the data signal generated from the data transmission means is transmitted as a phase-modulated AC magnetic signal . In the first reception timing, the data receiving means
According to 3 to claims 2 and performs the receiving operation at both the predetermined second phase position of the first phase position and the AC magnetic signals predetermined for the AC magnetic signals Data transmission / reception system for electronic watches. The first phase position is 0 to 180 °;
The data transmission / reception system for an electronic timepiece according to claim 4, wherein the second phase position is 180 to 360 °. It said data receiving means in said first reception timing,
6. The data transmission / reception system for an electronic timepiece according to claim 5, wherein a reception operation is performed at a timing of 90 degrees and a timing of 270 degrees of the phase of the AC magnetic signal . In the first reception timing,
If reception of data is confirmed at any one of the first and second phase positions, the subsequent data reception is performed only at the same phase position;
7. The data transmission / reception system for an electronic timepiece according to any one of claims 4 to 6, wherein a reception operation at other phase positions is not performed. It said data receiving means, in said first receiving timing,
When the phase of the AC magnetic signal to detect the transmitted data from the data transmitting means to the timing of 90 degrees, it performs the detecting operation only the timing of the phase 90 degrees at the detection timing of the second and later,
On the contrary, when transmission data from the data transmission means is detected at a timing of 270 degrees in phase ,
8. The data transmission / reception system for an electronic timepiece according to claim 7, wherein the detection operation is performed only at the timing of the second and subsequent detection timings having a phase of 270 degrees. The data receiving means includes
When it is confirmed that no data output from the data transmitting means to the first data receiving timing, according to any one of claims 4 to 8, characterized in that to stop the data reception after Data transmission / reception system for electronic watches. The data transmission / reception system for an electronic timepiece according to any one of claims 1 to 9, wherein the data transmission frequency of the data transmission means is a value of 1 / integer of 32768 Hz. Data transmitting and receiving system of the electronic timepiece according to any one of claims 1 to 10, wherein the data transmission frequency of the data signal by the data transmitting means generates is the magnetic signal of the same frequency. Data transmission means for generating a data signal;
In a data transmission / reception system of an electronic timepiece comprising an electronic timepiece having a reception data receiving means for receiving a data signal from the data transmission means using a coil of the electronic timepiece,
The electronic timepiece has timing signal generating means for generating a timing signal,
Further, the data transmission means includes a timing signal receiving means for receiving a timing signal output from the coil,
The data transmission means transmits a data signal in synchronization with the received timing signal,
And data transmission and reception system of the electronic timepiece, characterized in that it comprises a transmitting coil of the receiving coil and a data transmission of the timing signal received. 13. The data transmission / reception system for an electronic timepiece according to claim 12, wherein the transmission coil and the reception coil take an annular shape, and their centers are arranged coaxially. 13. The data transmission / reception system for an electronic timepiece according to claim 12, wherein the transmission coil has a lower reactance than the reception coil. 13. The data transmission / reception system for an electronic timepiece according to claim 12 , wherein a distance at which the data transmission means can receive the timing signal is shorter than a distance at which the data reception means can receive the transmission data. 13. The data transmission / reception system for an electronic timepiece according to claim 12, wherein the reception means starts a data transmission operation when receiving the timing signal generated intermittently at least twice. 13. The data transmission / reception system for an electronic timepiece according to claim 12, wherein the signal level of the data signal transmitted by the data output means is adjusted according to the signal strength received by the timing signal receiving means. The electronic timepiece has a step motor for driving display means,
The data transmission / reception system for an electronic timepiece according to any one of claims 1 to 17, wherein the coil is a coil of the step motor . An electronic timepiece that receives a data signal that is an AC magnetic signal that is amplitude-modulated or phase-modulated based on data,
Timing signal generating means for generating a timing signal;
A display unit driving step motor, a motor driver for driving the step motor,
Data receiving means for receiving the data signal using a coil of the step motor is provided, and the data receiving means performs data reception by placing at least one end of the motor driver in a high impedance state at the time of data reception. With
An electronic timepiece characterized in that a time for setting a high impedance state at the time of data reception is set shorter than a reception rate of the data signal. In the first reception timing, the data receiving means
A predetermined first phase position of the AC magnetic signal;
The receiving operation is performed with both the predetermined second phase position of the AC magnetic signal.
The electronic timepiece according to claim 19. The first phase position is 0 to 180 °;
The electronic timepiece according to claim 20, wherein the second phase position is 180 to 360 degrees. In the first reception timing, the data receiving means
The receiving operation is performed at the timing of 90 degrees and 270 degrees of the phase of the AC magnetic signal.
The electronic timepiece according to claim 21. In the first reception timing,
When reception of data is confirmed at any one of the first and second phase positions, the subsequent data reception is performed only at the same phase position;
It is configured not to perform receiving operations at other phase positions.
The electronic timepiece according to any one of claims 20 to 22, wherein the electronic timepiece is characterized in that The data receiving means is the first reception timing,
When the transmission data from the data transmission means is detected at a timing of 90 degrees of the phase of the AC magnetic signal, only the timing of the phase of 90 degrees is detected at the second and subsequent detection timings,
On the contrary, when transmission data from the data transmission means is detected at a timing of 270 degrees in phase,
At the second and subsequent detection timings, the detection operation is performed only when the phase is 270 degrees.
24. The electronic timepiece according to claim 23. The data receiving means includes
25. The electronic timepiece according to claim 20, wherein when the reception of the data signal cannot be confirmed at the first data reception timing, subsequent data reception is stopped. An electronic timepiece according to any one of claims 19 to 25;
A data transmission / reception system for an electronic timepiece comprising data transmission means for generating a data signal which is an AC magnetic signal amplitude-modulated or phase-modulated based on data,
The data transmitting means has timing signal receiving means for receiving the timing signal output from the coil, and transmits the data signal in synchronization with the received timing signal.
A data transmission / reception system for an electronic timepiece. 27. The data transmission / reception system for an electronic timepiece according to claim 26, wherein the data transmission frequency of the data transmission means is a value of 1 / integer of 32768 Hz. 27. The data transmission / reception system for an electronic timepiece according to claim 26, wherein a data transmission frequency of a data signal generated by the data transmission means is the same frequency as the magnetic signal.

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