JPS5980020A - Timer with time limit display - Google Patents

Abstract

PURPOSE:To reduce the current consumption as well as a misdecision from other displays, by displaying that the time is limited only when the minimum unit is set at >=1min for the time limit display time of a timer. CONSTITUTION:A timer circuit 1 performs a time limiting action from the set contents of a timer range setting part 2 and a time limit time setting part 3. At the same time, a time range discriminating circuit 4 receives the data from the part 2 and decides whether the minimum time is >=1min for the time limit display time of a timer. Then the circuit 4 delivers an output when the minimum unit of display time is >=1min. This output is supplied to a discriminaton circuit 5 for time limit display together with the time limit output given from the circuit 1. Then a time limit display circuit 6 is actuated by the ouptut of the circuit 5 to display a time limit mode.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-display digital display timer with a time limit display that fully indicates that the time is running out.

In conventional multi-range 'digital display timers, for example, when the minimum display time unit is 1 second as shown in Figure 1(a), the displayed number changes every second as time elapses, indicating that the timer is in limited operation. Although it is easy to distinguish between
As in b), if the minimum display time unit is 1 minute, the display will not change until a maximum of 1 minute has elapsed, so is it in a timed operation or is it waiting for an external control signal? It has the disadvantage that it cannot be determined.

The present invention has been made in view of the above points, and its purpose is to enable operation for a limited time even if the minimum display time unit is one minute or more. Since the time-limited space display is performed only when the time period is 1 minute or more, there are fewer extinguishing +'At's than when the time-limited space display is used for any time register, and there is a risk of miscommunication with other displays. The goal is to reduce breakage. The following is a detailed explanation of failure 1'' gold tff based on a failed example.

In the second Qi, (1) is a timer circuit, and the time is ′:J
The sleep FPf is reduced according to the setting contents of the time setting city (2) and the time limit @I setting city (3). (4) is a time range discrimination circuit that receives data from the time range setting section (2) and discriminates whether the timer limit display time is the minimum unit or one minute or more, and outputs an output if it is one minute or more. put out.

(6) is a time limit display discrimination circuit, and a time range discrimination circuit (
Input the output from 4) and the output during time limit of the timer circuit 11), and output when both outputs match? put out.

+6) The fd time limit display circuit receives the time limit display and the output of the j-separate circuit (6) to indicate that the time limit is off. (7) is the 1st hour time display capital.

Now, depending on the settings of the time range setting section (2) and the time limit setting section (3), the timer circuit (1) is set to a time limit mode, and the time display section (7) displays the entire time K. At this time, if the minimum display time unit is 1 minute or more, time range f41
Output from another circuit (4), and this output and timer circuit 1
117)・A separate circuit (
51, and its output is the time-limited display times WI +61
+1 to make it, all indications that it is for a limited time -r.

Figure 3 shows a specific circuit of an embodiment of the present invention, and shows a switch (8
) constitutes a time range setting section (2), for example, a contact a't? O○00 seconds, contact is already 00 minutes 00 seconds, contact C
This allows you to set ○○ hour ○○ minute. Therefore, by connecting switch (8) to contact cK, the minimum display time unit becomes 1 minute or more, and this contact ceNA
By connecting to one input of the NDl path (9), the entire time range discrimination circuit (4) can be formed. NAND circuit (9
) consists of the time limit display discrimination circuit (5) and the timer circuit 1.
1) A transistor (lO
) and light emitting diode (Ill) to display circuit (6)
It is fully configured.

Now, switch (8) is connected to contact cK.

The minimum and medium display time is 1 minute, and the NAND circuit (
When the input terminal d of the transistor (+
When turned on to 01', the light diode (1 light) will light up completely to indicate that the timer is running.

The fourth circuit is a timer circuit (using a microcomputer), and the light-emitting diode (1) of the time limit display circuit (6) is lit by the programmer D- as shown in Figure 5. The part surrounded by a box is the part added in the present invention.In other words, it is determined by looking at the meeting P3 whether the minimum display time unit is 1 minute or more, and as a result, P
*'7 Output by turning on. This output turns on all the transistors (lO) and turns on the light emitting diode (lO).
Does it mean that the time limit is reached when the l is lit? Can be displayed.

As shown above, the present invention includes a timer circuit that operates for a limited time depending on the settings of the time range setting section and the time limit setting section, and a timer circuit that receives data from the time range setting section, and the minimum unit of the time limit display time is one minute. A separate circuit for determining the time range, ntj, the output of the other circuit for the time range 't-1+, the output of the timer circuit during the time limit, and a time limit display discriminating circuit that inputs and outputs the above-mentioned It is easy to make a time limit WJ product even if the minimum display time unit is 1 minute or more. In addition, if the minimum display time unit is 1 minute or more, the time-limited display becomes violet blind, so the time-limited display can be displayed in any time range. Current consumption compared to when? This has the advantage of being able to reduce the amount of text and other information displayed in the curriculum.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are explanatory diagrams of the time limit display contents of a conventional timer, Figure 2 is a block circuit diagram of an embodiment of the tree 4+: Figure 3 is an implementation of the same as above. The specific circuit diagram of the example, the fourth example is a specific circuit diagram of another embodiment of the improvement, and FIG. 5 is the 70-chisate same as above. fil...Timer circuit, (2)...Time opening range, ;Setting capital, (3)...Time limit setting section, (4)...Time range and j-specific circuit, (5)...・Separate circuit for display during time limit '14J, (6)...Circuit for display during sleep. Agent Patent Attorney Ai Ishide Figure 7 Figure 3 Figure 5

Claims (1)

[Claims] 111 A timer circuit that operates for a limited time depending on the settings of the time range setting section and the time limit setting section, and all data from the time range setting section are determined whether the minimum unit of time limit display time is one minute or more. a circuit for distinguishing between time relays and I-jumps; a time-limiting display discriminating circuit that inputs and outputs the output of the time reflexor 1911 circuit and the IIJI-medium output of the timer circuit; and an output of the "blocking mode" circuit. A timer with a time limit display, comprising a time limit display circuit that indicates that the time is running.