JPS5929835B2 - electronic watch - Google Patents

Description

Detailed Description of the Invention The present invention uses a resonator with a relatively high frequency such as a crystal as a time standard, a C-MOS with low power consumption as an electronic circuit, and a digital display using a liquid crystal, a light emitting diode, etc. for the display. Regarding electronic wristwatches.

The present invention particularly relates to a switch for preventing erroneous inputs caused by unnecessary operations when the digital display type electronic wristwatch is normally carried.

In the switch of a conventional digital display type electronic watch,
As a means of preventing erroneous input due to unnecessary operations when carrying the device, there is a method of mechanically locking the button buttons 1, 2, and 3 with a lock key 4 that can be operated from the outside as shown in Fig. 1; As shown in Figure 2, a switch 4 for inhibiting input is provided in addition to switches L2 and 3, a method is to input by pulling the crown out from the normal state and rotating it, and a method is to input by rotating the crown in its normal state. case,
A method of providing moderation or resistance so that it cannot be rotated by normal careless operation, and a method of arranging the external operating member so that it does not protrude from the case so that it cannot be operated by pushing it with a finger or hitting an object. When making corrections, methods such as using a jig or special equipment were used.

For this reason, it is necessary to provide a special lock operation key, which complicates the mechanism and exterior structure and limits the exterior design, increases the stroke of the crown, reduces waterproofness, and degrades operability to some extent. It has various drawbacks, such as the unavoidable erroneous input of information and the inability to operate without the use of a jig or the like.

SUMMARY OF THE INVENTION An object of the present invention is to realize a means for preventing erroneous input due to unnecessary operations without having the above-mentioned drawbacks.

FIG. 3 shows a block diagram of a digital display type electronic wristwatch according to the present invention.

1 is an input operation section, 2 is an input control section, 3 is a clock control circuit having a time counter holding section, 4 is an electro-optical display device, 5 is a time standard generator, and the clock control circuit 3 is a display on a display device 4. It is equipped with input terminals A', B'jσ, etc. that perform clock control such as correction digit selection, correction, and display change, and the input operation section 1 has corresponding output terminals A, B, a,... ... to perform clock control via the input control section 2.

The input control section 2 has output ends A and B of the input operation section 1.

A signal is received from at least one of C... (for example, A) and inputted to the input terminal (A') of the corresponding circuit 3, and at the same time, the internal state is changed and the input operation section 1 At least one of the output terminals A, B, C...
For example, it is configured so that input from B) to the input end (B') of the corresponding circuit 3 changes from a state where it is blocked (or allowed to pass) to a state where it is allowed to pass (or blocked).

FIG. 4 shows an embodiment in which the input control section of the present invention is realized in a circuit.

When input from A, a signal is sent to A' and at the same time,
A set signal is sent to the S-R flip-flop from B to B.
′ becomes possible.

Similarly, when an input is received from C, a signal is sent to C' and at the same time a reset signal is sent to the S-R flip-flop, and even if there is an input from B thereafter, no signal is sent to B'.

In this manner, when the S-R flip-flop is in the reset state, even if an input is made to B due to an inadvertent operation such as when being carried, the AND gate prevents the input from being input to B'.

A' is an input terminal for selecting, for example, a correction block for a digital display. B' is an input terminal for inputting correction data for a digital display, for example.
If the input terminal is used to display seconds, day of the week, and date, you can reset the S-R flip-flop by switching the display while carrying the device, even if you accidentally operate the control device corresponding to B. The display will not go awry.

In addition, when modifying the display, first input to A' for selecting a block to be modified in the display is performed, and at the same time the lock for large input B' is released.

Therefore, an erroneous input while carrying the device will only result in an erroneous display if, after operating the operating device corresponding to A, the operating device corresponding to B is operated before operating the operating device corresponding to C.

Therefore, it can be said that the safety against mislabeling is extremely high.

As inputs corresponding to A, in addition to selecting the correction block of the digital display, inputs that do not affect the time holding section of the circuit, such as display lighting, display modulation, and display switching, are preferably input before inputting correction data. If the necessary human effort is required, it is possible to eliminate the operation of removing the lock.

In addition, as an input corresponding to C, if you select an input that does not affect the time holding section of the circuit, such as switching the display, erasing the display, or canceling the modulation of the display, preferably the human power required after inputting the correction data, It is possible to eliminate the need to go through the trouble of locking.

Furthermore, as shown in Figure 5, if the circuit is configured to use a timer to send a reset signal to the S-R flip-flop, even if you accidentally operate the operating device corresponding to A, you can However, there is only a short period of time when there is a risk of erroneous input to B'.

Furthermore, even when the input corresponding to B' is unnecessary, a timer can be used to enable the means for preventing erroneous input to B'.

The configuration and features of the input control section have been described in circuit terms above, but by incorporating the input control section having these features into a clock control circuit made of C-MOS and housing it on the same chip, wiring can be omitted and the circuit layout , there are many advantages such as cost reduction.

As mentioned above, if the input terminals of A' l B' 7σ are the required human power before inputting the corrected data, the corrected data, and the required human power after inputting the corrected data, there is no need to go out of your way to lock or unlock them. A safety device against erroneous input can be activated without any hassle.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional example in which the error manual prevention means is mechanically realized, FIG. 2 is an explanatory diagram of a conventional example in which the error prevention means of FIG. 1 is electrically realized, and FIG. 3 is a block diagram of the present invention 4 to 5 are circuit diagrams showing respective embodiments of the input control section of the present invention. DESCRIPTION OF SYMBOLS 1... Input operation section, 2... Input control section, 3... Clock control circuit, 4... Electro-optical display element, 5... ...Time standard generator.

Claims (1)

[Claims] 1. A time standard generator, an electro-optical display device, counting the time standard signal of the time standard generator to generate a time signal and driving the display device, switching the display of the display device, and selecting a display correction digit; and a clock control circuit composed of a C-MOS having input terminals for controlling the clock such as correction, input operating sections for controlling the clock in correspondence with the respective input terminals, and each manual operating section. an input control section that controls input to the input terminal; an input prevention means provided to the input control section to prevent input from the correction input operation section; and an input prevention means that affects the time counting section of the clock control circuit. By operating the input operation section corresponding to the input terminal for selecting a display correction digit that is not available, inputting to the corresponding input terminal selects a display correction digit for the digital display, and simultaneously performs any display correction for the digital display. Even in the digit selection state, the state of the input control section is changed to cancel the input prevention means from the input operation section corresponding to the input terminal for correction, and when the input prevention means is in the released state. The input prevention means is released from the release state by operating the input operation unit corresponding to the display switching input end, and the display device returns from the display correction digit selection state to the normal time display state. An electronic wristwatch.