JPH0749436Y2 - Electronic clock - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is an electronic device for setting or correcting the time by using a numeric keypad of 0 to 9 and inputting the hour and minute respectively with a two-digit numerical value. The present invention relates to a timepiece, and more particularly to an electronic timepiece incorporated in a device using a numeric keypad, such as a radio receiver or a compact disc player.

[Conventional technology]

2. Description of the Related Art Conventionally, electronic timepieces are configured such that when the power is turned on or when the power is replaced, the current time can be directly set or corrected by operating a predetermined key of the ten keys. In this case, for example, when setting 1:11 pm, the afternoon key was operated, then the number 1 key on the numeric keypad and the hour / minute separator key were operated, and the number 1 key on the numeric keypad was operated twice. After that, the hour / minute delimiter key is operated, and finally the setting end key is operated to set 1:11 pm as the current time, and the time is newly measured from this time. The hour / minute separator key is a key for distinguishing between hours and minutes, for example, 1:11 and 11
It is a key for identifying hour and minute.

[Problems to be solved by the invention]

However, in the above-described conventional time setting method, the number of key operations is large, and the operation for setting the time is very complicated. When the numeric keypad is used for other purposes, for example, as a preset key for writing or reading the reception frequency in a radio receiver, or as a track (song) designation key in a compact disc player, the use of the numeric keypad is further increased. It was necessary to provide a changeover switch for defining

The present invention has been made in view of the above-mentioned conventional problems, and can set the time surely by a few key operations, and easily cancel the time setting operation even if the time setting operation is mistakenly performed. The purpose is an electronic clock that can be used.

[Means for solving problems]

In order to achieve the above object, the present invention provides a reference signal generator for generating a reference signal, a time counting means for counting time by the reference signal, and a setting means for setting data of the time measuring means in a changeable state. An electronic timepiece comprising: a numeric keypad for inputting at least hours and minutes by a two-digit numerical value; and a control unit for controlling the change of time data of the timekeeping means, wherein the control section is configured by the setting means. While the data of the timekeeping means is set to be changeable,
When a numerical value is input using the ten-key pad, it is determined whether or not a numerical value that can be set as a numerical value for each digit of the hour and minute has been input, when each numerical value is input for each digit, and at least the time is set. And when it is determined that the settable numerical values of all the predetermined digits representing the minutes are input, the time data of the timekeeping means is input by the ten-key in response to the completion of the input of the predetermined digits. When changing to a numerical value and clearing the remaining data of the timekeeping means, if it is judged that the input numerical value is not a numerical value that can be set as the numerical value of the corresponding digit of the hour and minute, input the numerical value of the digit. If the changeable state set by the setting means is canceled before the numeric value of a predetermined digit is input by the numeric keypad, the time data of the timekeeping means is not changed. An electronic timepiece and to control.

[Action]

According to the present invention, each hour and minute is represented by a numerical value of two digits, that is, a total of four digits, and when a numerical value is input by the numeric keypad while the data of the timekeeping means is set to be changeable, each digit is If it is judged that all the numerical values that can be set have been input, in response to the completion of the input of the numerical value of the predetermined digit, the time data of the timekeeping means is displayed on the numeric keypad. Converted to the numerical value input by and clear the remaining data of the timekeeping means,
When the value is not a settable value, the input of the digit of the digit is invalidated, and when the changeable state is released before the numeric value of the predetermined digit is input by the numeric keypad, the time of the clock means is set. Since the data is not changed, it is possible to set the time with a small number of key operations, and even if the time setting operation is mistaken, if the value of each digit is not a settable value, enter that value. Since it is invalidated immediately, the operability is good, and the time setting operation can be easily canceled until the input of the numerical value of the predetermined digit is completed, and the current time is not changed by mistake.

[Example of device]

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a radio receiver incorporating an electronic timepiece according to the present invention.

A radio wave received from the antenna 1 is detected by a detection circuit 5 after passing through a high frequency amplification circuit 2, a mixer 3 and an intermediate frequency amplification circuit 4, and a low frequency amplification circuit 6 as an audible sound to a speaker 7
Is output from. The voltage-controlled oscillator 8 and the low-pass filter 9 form a well-known phase-locked loop (PLL) circuit together with the programmable frequency divider 11 and the phase comparator 12 provided in the microcomputer 10, and the voltage-controlled oscillator 8 The local oscillation frequency of is supplied to the mixer 3. The local oscillation frequency is divided by the programmable frequency divider 11 according to the frequency division ratio information (N value) given from the central processing unit 13, and the phase comparator 12 divides the oscillation frequency of the crystal oscillator 14 by the frequency divider 15. The reference frequency (for example,
(9 KHz) and after being phase-compared, it is supplied to the voltage controlled oscillator 8 again via the low pass filter. Therefore, the local oscillation frequency changes in accordance with the frequency division ratio of the programmable frequency divider 11, that is, the N value given from the central processing unit 13,
By varying the N value, it is possible to receive a desired broadcast wave within the reception frequency band. Key input device 19
Is composed of a ten-key pad 20, a CLOCK key 21 for setting the time, and a key for a radio receiver (not shown). That is, when the desired number of the ten-key pad 10, for example, the No. 2 key is pressed for a predetermined time (2 seconds) or more while receiving the broadcasting station of a certain frequency, the memory corresponding to the No. 2 key
In the 16 areas, the above-mentioned N value corresponding to the broadcasting station currently being received is written. If you press this No. 2 key for less than 2 seconds while receiving another broadcasting station, the memory 16
The N value written in the area is read and given to the programmable frequency divider 11, and the broadcasting station having the frequency corresponding to the N value is received. The central processing unit 13 also controls the time counting and changing in addition to the reception control of the radio receiver.
Information on the reception frequency or time is displayed on the display via the drive circuit 17.
18 are given and selectively displayed.

FIG. 2 is a flow chart showing the main processing of the central processing unit 13.

When the microcomputer 10 is first powered on (connected to a battery in a vehicle), initialization such as clearing of the memory 16 is performed (step S1), and the key input device 19 takes in a key input every 50 msec. Is performed (step S2,
S3). If it is determined in step S4 that any key is pressed, key processing corresponding to that key is performed (step S5). Then, in step S6, it is determined whether or not the flag F0 is "1", that is, whether or not the time is being displayed. If NO, the frequency is being displayed and the information of the received frequency is set in the output register (step S8). When it is determined in step S6 that the time is being displayed (flag F0 = 1), it is then determined whether the flag F1 is "1", that is, whether it is the time setting mode (step S7). If the current time information is set in the output register (step S10), YES
If so, information corresponding to the time setting is set in the output register (step S9). Each information selectively set in the output register is output to the drive circuit 17 and displayed by the display unit 18.

FIG. 3 is a flow chart showing the interrupt processing of the clock, and time counting is executed every 0.1 seconds in response to a pulse signal of 10 Hz obtained by dividing the oscillation frequency of the crystal oscillator 14. When an interrupt occurs every 0.1 seconds (step S21), first, in step S22, the preprocessing for transferring and storing the contents of the register used for counting the time to another area of the memory 16 is performed. Then, in step S23, the memory 1 shown in FIG.
The data in the time count memory area 30 of 6 is sequentially incremented by 0.1 seconds, and the contents stored in another area of the memory 16 in step S22 are transferred to the original register (step S24), and the interrupt processing of the clock is performed. finish. (Step S25).

The clock of the present embodiment displays 12:59 and then 1:00, and the 10-hour data 31 returns to 0 when the data is counted up when the data is 1.

Next, the time setting process will be described with reference to FIGS. 5, 6, and 7.
It will be described with reference to the drawings. The second when the CLOCK key 21 is pressed
The process shown in FIG. 5 is executed as the key process of steps S4 and S5.

If it is determined in step S31 that the CLOCK key 21 is pressed, it is determined in step S32 whether the flag Fa is "0".
The flag Fa is a flag for determining whether to execute the CLOCK key process shown in FIG. 5 for the first time after the CLOCK key is pressed. If the CLOCK key process is executed for the first time after pressing the CLOCK key 21, Fa is executed. Since = 0, the process moves to step S33 and the flag Fa is set to "1". Next, in step S34, it is determined whether or not the flag Fb is "1", that is, whether or not the current state is the time setting mode, and if NO, the flag Fb is set to "1" and the time setting mode is set. Is set (step S35), and the 10-hour data input end flag F2, the 1-hour data input end flag F3, and
The 10th minute data input end flag F4 is cleared to "0" (steps S36, S37, S38), the 5-second counter is activated (step S39), and the process proceeds to step S40, and the flag F0 is set to "1". Is set during time display. The 5-second counter is for limiting the state in which the time can be set within a predetermined time (5 seconds in this example), and is executed by the central processing unit 13 in software. That is, 5 in step 39
When the second counter is activated, as shown in FIG.
The second counter is incremented (step S51), 5
Timekeeping continues in sequence until seconds have elapsed. Then, after 5 seconds have passed (step S52), the flag Fb is cleared to "0" to cancel the time setting mode (step S53), and the flag F1 is cleared to "0" to cancel the time setting mode. (Step S54). When the CLOCK key process shown in FIG. 5 is completed, the process returns to step S6 in FIG. 2 and, as described above, the display according to the states of the flags F0 and F1 is performed. And
When the CLOCK key 21 is released, the process proceeds from step S31 to step S41, and the flag Fa is cleared to "0".
After that, before the 5 second counter completes counting the time of 5 seconds, and before the time setting process described later is completed, the CL is restarted.
When the OCK key 21 is pressed, steps S34 to S42
Then, the flag Fb is cleared to "0" to cancel the time setting mode, and the flag F1 is cleared to "0" to cancel the time setting mode (step S43). This is to enable the time setting mode to be released without waiting for the 5 second counter to complete counting the time of 5 seconds in the time setting process described later when the time is set incorrectly. .

On the other hand, in step S41, the flag Fa is cleared to "0" and CLO
After the CK key process is completed, the ten key 20 is pressed to execute the time setting process shown in FIG. This time setting process is executed every time any key of the ten keys 20 is pressed during the time settable mode (flag Fb = 1).

For example, in the case of setting 1:11, first, if the 0 key indicating the 10-hour data is pressed, the flag Fb is set in step S61.
Is "1", that is, it is determined whether or not the time setting mode is possible. If YES, it is determined in step 62 whether the 10-hours data input end flag F2 is "0". Since F2 = 0 until the time data for 10 hours is input, it is then determined whether the 0 or 1 key is pressed (step S63), and the fourth
"0" is stored in the first numerical value memory area 41 in the time setting memory area 40 of the memory 16 shown in the figure (step S6).
At the same time, the 10-hour generation data input end flag F2 and the flag F1 indicating the time setting mode are set to "1" (steps S65 and S66).

Next, when the No. 1 key indicating the hourly data is pressed, the process proceeds from step S62 to step S67, and it is determined whether or not the hourly data input end flag F3 is "0". Until the hourly data is input, F3 = 0, so next step S68.
Then, the process according to the 10-hour data (0 or 1) already stored in the first numerical value memory area 41 of FIG. 4 is performed (steps S69, S70), and the second processing shown in FIG. A predetermined value is stored in the numerical value memory area 42 (step S7).
1, S72). In this example, the process proceeds from step S70 to S72
"1" is stored in the numerical value memory area 42, and then the 1-hour data input end flag F3 is set to "1" (step S73).

Then, when the No. 1 key is pressed again, the process moves from step S67 to step S74, and after it is determined whether or not the 10th minute data input end flag F4 is "0", the process proceeds to step S76 through step S75, and the fourth step Third numerical memory area 3 shown in the figure
"1" is stored in, and the 10th generation data input end flag F4 is set to "1" (step S77).

Further, when the No. 1 key is pressed again, the process moves from step S74 to step S79 through step S78 and the data in the time counting memory area 30 shown in FIG. The substitute data 33 and the 0.1-second generation data 34 are reset to "0", and as shown in FIG.
The numerical values stored in Nos. 2 and 43 and the currently pressed numerical value (“1” in this example) are transferred and stored in the corresponding areas in the time counting memory area 30 (step S8).
0), new time data, namely 1:11 is set,
After that, the time is counted from this time.

Then, the flag Fb is cleared to "0" to cancel the time setting mode (step S81), and the flag F1 is cleared to "0" to cancel the time setting mode (step S82). Is completed.

FIG. 8 is a flow chart of the CLOCK key processing showing another embodiment of the present invention, which is executed as a part of the key processing of steps S4 and S5 of FIG.

In this embodiment, the time is set by sequentially pressing predetermined ten-keys 20 according to the time to be set while pressing the CLOCK key 21.
The time can be set while the K key 21 is continuously pressed. That is, in step S92, it is determined whether or not the CLOCK key 21 is pressed, and if NO, the 10-hour data input end flag F2, the 1-hour data input end flag F3, and the 10-minute data input end flag F4 are set to " The flag F1 is cleared to "0" and the time setting mode is released (step S96), as well as being cleared to "0" (steps S93, S94, S95). on the other hand,
If YES is determined in the step S92, the flag F0 is set to "1" and set during the time display, and the same processing as that described in steps S62 to S82 of FIG. 7 is performed. As a result, the desired time is newly set in the time counting memory area 30 of FIG. Since the processing relating to the time setting is the same as that described with reference to FIG. 7, it is omitted here.

In the present embodiment, the reason why the time is set while pressing the CLOCK key 21 is to prevent the time from being accidentally changed because the time does not need to be reset frequently once it is set. Therefore, the time cannot be set without using both hands.

In addition, in the above-mentioned examples, all 12 hours display, that is,
Although the display of 12:59 and then 1:00 has been described, the present invention is not limited to this, and the display is 24 hours, that is, 23:59 and then 0:00. It may be displayed on the screen or displayed up to the second.

Furthermore, in the 12-hour display, it is also possible to display both morning and afternoon together. In this case, the key input device 19 is provided with a key that specifies am and pm, and the key that specifies am and pm is , A function of the CLOCK key for setting the time in a changeable state may be provided. That is, the judgment in step S31 in FIG. 5 and step S92 in FIG. 8 is changed to “Am or pm key-on?”, And data representing am or pm is stored in the memory areas 30 and 40 in FIG. 4, respectively. A region to be used may be provided.

[Effect of device]

As described above, according to the present invention, the time can be reliably set with a small number of key operations, and even if the time setting operation is mistakenly performed, if the value of each digit is not a settable value, the input of that value is invalid immediately. Therefore, the operability is good, and the time setting operation can be easily canceled until the input of the numerical value of the predetermined digit is completed, and the current time is not changed by mistake.

[Brief description of drawings]

FIG. 1 is a block diagram of a radio receiver incorporating an electronic timepiece according to the present invention, FIG. 2 is a flow chart showing main processing of the central processing unit 13, FIG. 3 is a flow chart showing interruption processing of the timepiece, and FIG. FIG. 5 is a diagram showing a part of the memory area of the memory 16, FIG. 5 is a flowchart showing a CLOCK key process, FIG. 6 is a flowchart showing a 5 second counter process,
FIG. 7 is a flowchart showing the time setting process, and FIG. 8 is a flowchart of the CLOCK key process showing another embodiment of the present invention. In the figure, 1 is an antenna, 2 is a high frequency amplification circuit, 3 is a mixer, 4 is an intermediate frequency amplification circuit, 5 is a detection circuit, 6 is a low frequency amplification circuit, 7 is a speaker, 8 is a voltage controlled oscillator, 9
Is a low pass filter, 10 is a microcomputer, 11 is a programmable frequency divider, 12 is a phase comparator, 13 is a central processing unit, 14 is a crystal oscillator, 15 is a frequency divider, 16 is a memory, 17 is a drive circuit, 18 is Display, 19 key input device, 20 numeric keypad, 21 CLOCK key, 30 time memory area, 4
0 is a time setting memory area.

Claims (1)

[Scope of utility model registration request] 1. A reference signal generator for generating a reference signal, a time counting means for counting time by the reference signal, a setting means for setting data of the time measuring means in a changeable state, and at least an hour and a minute. An electronic timepiece including a ten-key pad for inputting a two-digit numerical value and a control unit for controlling the change of time data of the timekeeping unit, wherein the control unit can change the data of the timekeeping unit by the setting unit. When a numeric value is entered with the numeric keypad while the numeric keypad is being set, whether or not a numeric value that can be set as a numeric value for each digit of hours and minutes has been entered If it is determined that each set digit has been entered for at least all of the digits of the predetermined digits that represent hours and minutes, respond to the completion of input of the digits of the predetermined digits. The time data of the time measuring means is changed to the numerical value input by the ten-key pad, and the remaining data of the time measuring means is cleared, and the input numerical value is not a numerical value that can be set as the numerical value of the corresponding digit of hour and minute. If it is determined that the input of the numerical value of the digit is invalid, and the changeable state set by the setting means is released before the numerical value of the predetermined digit is input by the numeric keypad, the timekeeping is performed. An electronic timepiece characterized by controlling so as not to change the time data of the means.