JPS5850491A - Quick-forwarding adjustment mechanism of electronic timepiece - Google Patents

Abstract

PURPOSE:To enable a simple and rapid operation for adjusting a time, by changing a quick-forwarding frequency in stages according to the length of a time for operating a quick-forwarding switch. CONSTITUTION:When a quick-forwarding switch 15 is turned ON, a quick-forwarding frequency which is in accord with the length of a time wherein the switch is ON is deliverd from an adjustment frequency switching circuit 11. Quick-forwarding signals of 2Hz, 8Hz and 16Hz delivered from the quick-forwarding frequency switching circuit 11 are inputted in any one of a second counter 3, a minute counter 4, an hour counter 5, a day counter 6 and a month counter 7 selected by a counter selecting circuit 9, and thereby the quick-forwarding adjustment is performed. When the quick-forwarding switch is held ON within one second, a pushing adjustment is conducted once.

Description

[Detailed description of the invention] The present invention relates to a fast forward correction mechanism for an electronic timepiece.

Conventional fast-forward correction mechanisms are those that use the rotation of the crown in a rotating crown watch to change the amount of correction depending on the rotation speed;
One known method is the so-called book button method, in which corrections are made at a constant frequency by holding down the button.

However, in the former case, if you want to make a quick correction, you have to turn the crown faster, which is cumbersome to operate, and in the latter case, the correction step is constant, so it takes time to make the correction. This is a major hindrance to speeding up the time adjustment work, especially at the final stage of manufacturing and assembly Ifk.

The present invention allows quick correction with simple operations, and its feature is that the fast-forward frequency can be changed in stages according to the length of time the fast-forward dedicated switch is operated.

In the following, the present invention will be explained in detail with reference to illustrated embodiments. .

The reference frequency from the oscillation circuit 1 is divided by a frequency dividing circuit 2, and the frequency divided by this is sequentially counted by a second counter 3, a minute counter 4I4, an hour counter 6, a day counter 6, and a month counter 7. .

By turning on the mode selection switch 18, the mode selection circuit 8 selects a mode for correcting hours, minutes, and seconds on the display device 120 in a known manner.

By turning on the counter selection switch 14,
A counter selection circuit 9 allows selection of one of the counters 3 to 7 to which the fast-forward IN wave number is input.

When the fast-forward dedicated switch 16 is turned on after the switch 14 is turned on, a fast-forward frequency corresponding to the length of time that it is turned on is outputted from the modified +M wave number switching circuit 11.

That is, this circuit 11 receives, for example, 2H2, 8H2°16H, as a 1M wave number in the middle of frequency division from the frequency dividing circuit 2.
Fast-forward signals of z are input through signal lines 16, 17, and 1B, respectively, and a signal of It(z), which is the output of the frequency divider circuit 2, is input through a signal line 19 and an AND circuit 12Y. This IHz signal is manually input to the fast-forward frequency switching circuit 11 and counted only while the fast-forward dedicated switch 15 is turned on. 2Hz, FIHz, 16Hz above depending on the time you turn on 15) Fast forward 11V17
Jt) At output. For example, 2 Hz for more than 1 second and up to 3 seconds.

If it exceeds 3 seconds and up to 5 seconds, Bl (z, if it exceeds 5 seconds, 16
Each outputs Hz. This can be expressed in a table as follows.

Therefore, the 2 output from the fast forward frequency switching circuit 11
A fast forward signal of Hz, 8Hz or 16Hz is
It is inputted to any one of the counters selected by the counter selection circuit 9 among the counters 4r3 to 7 through the fast forward signal output gate 10 controlled by the counter selection circuit 9, and is used for seconds and minutes. , hour, day, and month can be fast-forwarded in three stages according to the operation time of the fast-forward switch 15.

Note that when the fast-forward dedicated switch 15 is turned on for less than 1 second, so-called one-press correction is possible as in the past, and in this case, 2 Hz s 8 H1% 16H
Input of the fast-forward signal of z is prohibited in the fast-forward same wave number switching circuit 11. In addition, the above three switches 13, 14,
15 are pushbutton switches.

As is clear from the embodiments described above, the fast-forward mechanism of the present invention receives a plurality of fast-forward signals having stepwise different 1M wave numbers from a fast-forward switch and a minute IM circuit, and according to the operating time of the fast-forward switch, A fast-forward frequency switching circuit that sequentially switches and outputs a plurality of fast-forward signals, and 11 counter selection circuits that select which of a plurality of counters, such as hours, minutes, seconds, etc., will receive the fast-forward signal output from this fast-forward frequency switching circuit. It is equipped with
The fast-forward frequency can be changed in stages according to the length of time the fast-forward dedicated switch is operated.

Therefore, according to the present invention, the time adjustment work can be performed easily and quickly, and the time adjustment work at the final stage of manufacturing and assembly of the watch can be speeded up. Other time corrections, calendar corrections, etc. can be made more quickly than before.

[Brief explanation of the drawing]

The drawing is a block diagram illustrating one embodiment of the invention. l...Oscillation circuit, 2...Min IM circuit,
3 to 7...Counter, 16...Fast-forward dedicated switch, 11...Fast-forward frequency switching circuit, 9...Counter selection circuit O Patent applicant Rico Ichi Shunsuke Nakao, Patent Attorney, Representative of Watch Co., Ltd.

Claims (1)

[Claims] In an electronic watch that has an oscillation circuit, a frequency dividing circuit, multiple counters for hours, minutes, seconds, etc., and a display device, a dedicated fast-forward switch and a plurality of fast-forward signals having stepwise different frequencies from the frequency dividing circuit are manually generated. A fast-forward frequency switching circuit that sequentially switches and outputs the plurality of fast-forward signals according to the operation time of the fast-forward dedicated switch, and a fast-forward signal output from this fast-forward frequency switching circuit to any of the plurality of counters such as hours, minutes, seconds, etc. A fast forward correction mechanism for an electronic watch, comprising a counter selection circuit for selecting an input.