JPS6016596B2 - electronic clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic timepiece having multiple functions including at least a stopwatch function.

In recent years, with the development of LSIs (Large Scale Integrated Circuits), it has become possible for electronic watches to have multiple functions other than normal watch functions, such as a stopwatch function and an alarm function. In addition to the above-mentioned functions, these electronic watches may have various functions such as a timer function to notify the passage of a desired time, a world clock function to notify the time in each region of the world, and so on. However, although these functions are used selectively depending on the purpose of the user,
The most frequently used of these functions is the stopwatch.

This is due to the fact that there are many opportunities to measure time in daily life, such as sports competitions, work, etc., and there is no need to worry about setting the time as with alarm functions, timer functions, etc. In addition, it is difficult to provide many switches, especially in a small watch such as a wristwatch, so the switches are also used to perform various controls.
The operations were complicated and cumbersome. The present invention was made in view of the above circumstances, and provides an electronic timepiece that facilitates selection of the most frequently used stopwatch function in an electronic timepiece that has multiple functions including a stopwatch function in addition to a clock function. It is something. An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an oscillator that generates a reference signal, and a high frequency output signal from this oscillator is sent to a frequency divider circuit 2, where the frequency is divided into a pulse signal IP/IS with a period of 1 second. This pulse signal IP/IS is sent to the time counter 3 and counted, and the time counter 3 obtains "hours,""minutes," and "seconds."
The time information is sent to the display section 5 through the gate circuit 4 and displayed digitally. Further, the pulse signal IP/IS outputted from the frequency dividing circuit 2 is also sent to the other function counting section 6. As will be described later, this pond function counting section 6 is subjected to counting control by any one of the stopwatch control section 7, alarm control section 8, and specific location time counting control section 9. The information in section 6 is sent to switching circuit 4. This switching circuit 4 includes a binary flip-flop 10 as a switching signal for switching the content displayed on the display section 5 from the time information obtained by the time counter Z section 3 to the information obtained from the other function counter section 6. Q side output signal of is given. The output of this binary flip-flop 10 is inverted every time the changeover switch 11 connected to its input terminal T is operated.The Q side output signal is also sent to the AND circuit 12, and the Q side output signal is The output signal is sent to an AND circuit 13. Further, the operation signal of the operation switch 14 is sent to the AND circuits 12 and 13, and the output signal of the AND circuit 13 is sent to the time counter 3 as a time adjustment signal. That is, when the changeover switch 11 is not operated and the "1" signal is output from the Q side output terminal of the binary flip-flop 10 and the time information of the time counter 3 is displayed on the display section 5, the operation switch is not operated. When you operate (ON-OFF) 14,
The contents of the ``hour'' of the time counter 3 are incremented by 11 every 2 seconds, and when the operation switch 14 is operated again when the contents of the ``hour'' are correct, the 11 operation of the contents of the ``hour'' is stopped. At the same time, the contents of "minute" are incremented by 11 every 2 seconds. Furthermore, if the operation switch 14 is selected when the contents of the "minutes" are the correct time, the eleventh operation of the "minutes" is stopped and the contents of the "seconds" are cleared, and the next operation of the operation switch 14 The timing operation is started. On the other hand, in order to select the function of the other function counter 6, that is, whether to use this function counter 6 as a time measurement counter for the stopwatch function, or as a time setting counter for the alarm function, or specify A function selection switch 15 is provided to select whether to use it as a time counting section for the local time counting function.

The operation signal of this function selection switch 15 is given as a shift control signal for sequentially shifting the content "1" to a 3-bit shift register 16 in which only one bit is preset with the content "1". Further, the first bit output signal of the shift register 16 is given to the stopwatch control section 7, and the clock function counting section 6 is used as a counting section for time measurement. Figure 2 shows the stopwatch control section 7.
The first bit output signal of the shift register 16 is sent to the AND circuit 21. The output signals of the AND circuit 12 and the inverter 22 are also sent to this AND circuit 21, and the output of the AND circuit 21 is applied to the input terminal of a binary flip-flop 23. The Q-side output signal of the binary flip-flop 23 is sent to the cell function counting section 6 as a time measurement command signal. Further, the output signal of the AND circuit 12 applied to the AND circuit 21 is also sent to the 2-second delay circuit 24, the set input terminal S of the delayed flip-flop 25, and the AND circuit 26. The two second delay circuit 24 outputs an output two seconds after receiving the output signal of the AND circuit 12, and this output signal is sent to the reset terminal R of the delayed flip-flop 25. Further, the Q side output signal of the delayed flip-flop 25 is also given to the AND circuit 26, and the output signal of this AND circuit 26 is applied to the inverter 2.
2, and is also sent to the cell function counting section 6 and the shift register 6 as a reset signal. That is, when the operation switch 14 is operated when the first bit of the shift register 16 has the content "1", this operation output signal is applied to the input terminal T of the binary flip-flop 23 via the AND circuit 21. As a result, the Q side output signal becomes "1" and the other function counter 6 outputs the pulse signal IP/
Count IS. Next, when the operation switch 14 is operated, the output of the binary flip-flop 23 is inverted, and the counting operation of the other function counting section 6 is stopped. In other words, each time the operation switch 14 is operated, a start and a stop are performed. Furthermore, regardless of the bit position of the content "1" in the shift register 16, the delayed flip-flop 25 is set by operating the operation switch 14, and the delay circuit 24 is set.
The gate of the AND circuit 26 is released until there is an output from , that is, for 2 seconds. When the operation switch 14 is operated during these 2 seconds, this operation signal is outputted via the AND circuit 26, clears the other function counter 6, and is also given to the shift register 16 as a reset signal. The second and third bit output signals of the shift register 16 are sent to the alarm control section 8 and the specific location time counting control section 9, respectively. When the second bit output signal of the shift register 16 is “1”, the alarm control unit 8 sets the time in the function counting unit 6 using the output signal of the AND circuit 12, and compares this time with the output signal of the time counting unit 3. A warning sound is emitted when the time information matches the time information.The specific location time counting control unit 9 counts the time in a specific area that is a different time from the time information of the time counting unit 3. It operates when the third bit of the shift register 16 has the content "1", and any time can be set by the operation signal of the band circuit 12.In the above configuration, normally the time counter 3
Time information such as hours, minutes, seconds, etc. output from the display unit 5 is digitally displayed.

When other functions, such as an alarm function, are desired, the selector switch 11 is operated. This operation causes the binary flip-flop 10 to be set, and this set output signal is given to the cutoff circuit 4, so that the contents of the other function counter 6 are displayed instead of the time information. Then, by operating the function selection switch 15, the content "1" of the shift register 6 is set to the second bit, and furthermore, the operation switch 14
The alarm time is set in the pond function counter 6 by the operation. Thereafter, by operating the changeover switch 11, the time information from the time counter 3 is displayed on the display section 5, and when the time information from the time counter 3 matches the alarm setting time, an alarm device (not shown) is activated. A warning signal is issued. Therefore, the second bit of the shift register 16 has the content “1”.
is set, that is, when the alarm time is set in the other function counter 6, and the stopwatch function is desired, the information in the function counter 6, that is, the alarm The time is displayed on the display section 5. At this point, if the operation switch 14 is operated twice within 2 seconds, an operation signal is output from the AND circuit 26 shown in FIG. 2, and the other function counter 6 is cleared. That is, the stopwatch is brought into a state where it can be started. At the same time, a reset signal is sent from the AND circuit 26 to the shift register 6, setting the content "1" to the first bit, and sending a "1" signal to the stopwatch control section 7 to select the stopwatch function. Therefore, the user does not have to perform the troublesome operation of operating the function selection switch 15 to select the stopwatch function and clearing the display to make it ready to start, but simply clears the display. It is possible to select a function.In the above embodiment, the other function counter 6 is cleared by operating the operation switch 14 that gives the start and stop signals twice within 2 seconds, but the operation switch 14
It may be cleared by pressing the button for a period of time (for example, 2 seconds or more), or a clear switch may be provided independently.

Further, the functions other than the stopwatch function may be, for example, a timer function, etc., and various modifications can be made without departing from the gist of the present invention. As described above, even if a function other than the stopwatch function is selected, the stopwatch function is automatically selected by means of clearing the other selected function, in other words, the displayed contents. Therefore, it is possible to provide an electronic clock that is easy to operate and use.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing one embodiment of the present invention, and FIG.
It is a detailed block diagram of the stopwatch control part shown in the figure. 1... Oscillator, 3... Time counting section, 5
... Display section, 6 ... Pond function counter section, 7
...Stopwatch control section, 8...
Alarm control unit, 16...shift register. Figure 1 Figure 2

Claims (1)

[Claims] 1. A time counter that counts reference signals to obtain time information;
A display unit for displaying the time information, an other function counting unit provided separately from the time counting unit, means for displaying the contents of the other function counting unit, and a stopwatch function for the other function counting unit. a function control section that operates as a plurality of functions; a function selection switch means operated to select one of the plurality of functions; and a selection of the other function counting section according to the selection of the function selection switch means. a function specifying means for supplying a function specifying signal to the function control section in order to operate the function as the specified function; a clear switch means for clearing the contents of the other function counter; and a clear switch means for clearing the contents of the other function counter; An electronic timepiece characterized by comprising: a means for forcibly setting a function specification to a stopwatch function.