JPS5815075B2 - time display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time display device, and more particularly to a time display device that easily displays elapsed time with respect to an arbitrary set time.

2. Description of the Related Art Conventionally, when displaying a current time (elapsed time) that changes every moment with respect to a set time in electronic equipment such as a timer, there have been two types of display: analog display and digital display.

When displaying in an analog manner, for example, the time was set using a dial with a scale, and the elapsed time was displayed by the rotational movement of the dial itself or the circular movement of the hands.

When displaying digitally, the time is set using a thumb rotary switch or numeric keypad, and the current time is displayed digitally using a decimal display device.

By the way, as described above, the display device that sets and displays the time in an analog manner sets the time according to the scale provided around the dial, so visual errors are likely to occur.

Furthermore, for example, when setting a 1 minute timer in a 10 minute timer, it is difficult to visually confirm the remaining time in a minute range.

On the other hand, devices that display digitally have problems such as difficulty in intuitively grasping the ratio of remaining time to total time.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a time display device that allows a user to easily visually grasp the ratio of the current elapsed time to the remaining time with respect to the set time.

To summarize the invention, a time setting means capable of setting an arbitrary time and a display having an array of a plurality of display segments sequentially displaying the ratio of elapsed time to the set time are provided on the same plane, and the time setting means is provided on the same plane. The time set by the setting means divided by the number of display segments is stored in a register, and the time detected by the means for detecting the elapsed time for each divided time interval and the time stored in the register are stored. The display segments are compared and the display of the display segments is sequentially moved at regular time intervals based on the matching output.

The invention will be explained in more detail below along with the embodiments shown in the drawings.

FIG. 1 is an external view of one embodiment of the present invention.

This embodiment shows an application to a timer.

In the figure, a setting switch 11 as a time setting means and a display 12 consisting of ten light emitting diodes 121 to 130 as a plurality of display segments are provided on the same surface of the operating unit 1.

The setting switch 11 consists of, for example, two digits, and can set a time up to 99 minutes.

As an example, the set time is set to 25 minutes.

The display 12 sequentially displays the percentage of the elapsed time out of the set time of 25 minutes by moving light emitting diodes that light up from 0% to 90% in 10% increments.

In this way, the setting switch 11 and the display 12 are provided together on the same surface of the operation section 1.

The time set by the setting switch 11 and the elapsed time shown by the display 12 can be compared at a glance, making it very easy to understand the elapsed time.

FIG. 2 is a circuit block diagram of the timer of FIG. 1.

First, this configuration will be explained. The time set by the setting switch 11 also shown in FIG. 1, for example 25 minutes, is given to the control section 2.

A comparison register 4 and a timer circuit 5 as elapsed time detection means are connected to the control section 2.

Comparison register 4 compares the set time of 25 minutes with light emitting diode 1.
The time divided by the number 10 from 21 to 130, i.e.
25 minutes ÷ 10 = 2.5 minutes.

Note that this division (calculation) is performed by the control section 2.

The control unit 2 also includes a switch 3 for starting the timer.
is connected, and when the switch 3 is closed, a bi-level signal (hereinafter referred to as rHJ) is given to the control section 2.

This switch 3 is placed, for example, on the back side of the timer.

The timer circuit 5 measures the elapsed time in response to turning on the timer starting switch 3.

That is, r given when the start switch 3 is closed
HJ is applied to one input terminal of the AND gate 81 via the control section 2, and a 0.1 minute pulse is applied to the other terminal of the AND gate 81 as a reference pulse.

The output of this AND gate 81 is given to the input terminal of the timer circuit 5, and the timer circuit 5 measures time by stepping the pulse by 0.1 minute.

The control unit 2 includes at least a comparison circuit 21, and compares the time interval of 2.5 minutes stored in the comparison register 4 with the counting time of the timer circuit 5, and when they match, that is, the timer circuit 5 has determined that the time interval is 2.5 minutes. When counted, a coincidence output signal is applied to one end of the AND gate 81 and also to the timer circuit 5 to reset the counting time.

Then, the timer circuit again counts the elapsed time from 0.

Further, the control unit 2 sends a clear signal rHJ to the prohibition input terminal of the prohibition gate 84 in accordance with the time setting by the setting switch 11.
give.

Furthermore, the control section 2 also includes the above-mentioned timer starting switch 3.
The timer starting signal rHJ input from the OR gate 82
, and is applied to the display register 6 as display moving means via the inhibit gate 84.

The display register 6 lights up the light emitting diodes 121 to 130 sequentially starting from the diode 121, that is, from the right side to the left side at regular time intervals, according to changes in elapsed time.

The display register 6 is composed of a dynamic shift register or the like, has bit cells corresponding to the number 10 of light emitting diodes 121 to 130, and receives a clock signal φ at its clock input terminal.

Each bit output of the display register 6 is given to the latch circuit 7, the least significant bit (10 bits) output is given to the input end of the display register 6 via the OR gate 82, and the 9th bit output is given to the AND gate 83. given at one end.

The latch circuit 7 stores the output of the display register 6, and stores the output of the display register 6 at the timing of the clock signal φ10 obtained by dividing the clock signal φ by a number of 10 every time the display register 6 circulates once. The rHJ output of is temporarily stored.

Each bit output of the latch circuit 7 is given to the anodes of the light emitting diodes 121 to 130.
Each of the cathodes 1 to 130 is grounded.

Next, the operation of this embodiment will be explained.

A desired time, for example 25 minutes, is set using the setting switch 11.

In response, the control unit 2 prohibits the clear signal 1-H from the gate 8.
4 to the display register 6 to initially clear the contents of the display register 6.

Furthermore, the control unit 2 divides the set time of 25 minutes by the number of light emitting diodes 121 to 130, that is, "10",
The value of 2.5 minutes is stored in comparison register 4.

When the start switch 3 is turned on to start the timer circuit 5, "H" is applied to the control section 2.

In response, the control unit 2 applies “H” to the AND gate 81 and also applies “H” to the most significant bit of the display register 6 via the OR gate 82 .

As a result, a 0.1 minute pulse is applied from the AND gate 81 to the timer circuit 5, and the timer circuit 5 counts the 0.1 minute pulse to measure time.

On the other hand, the display register 6 receives the applied "H" with a clock φ
, and the least significant bit output is returned to the input end of the display register 6 via the OR gate 82 and the inhibit gate 84 for circulation.

Then, the output of the display register 6 is applied to the latch circuit 7 in a bit-parallel manner.

The latch circuit 7 stores the output of the most significant bit of the display register 6 in its least significant bit cell based on a timing signal given from the control section 2.

Therefore, 0% of the light emitting diodes 121 are lit.

That is, when the start switch 3 is closed and the timer circuit 5 is started, only 0% of the light emitting diodes 121 are lit, so it can be confirmed that the timer has started.

Then, when the counting time of the timer circuit 5 becomes equal to the time stored in the comparison register 4, that is, 2.5 minutes, the comparison circuit 21 gives the coincidence output rHJ to the timer circuit 5 to reset the counting time. and gate 8
Give to 3.

AND gate 83 is the ninth of the rotating display register 6.
When 1-H” comes to the bit, the register displays “H”.

6 input terminal.

Therefore, "H" is stored in the upper two digits of the display register 6.

The upper two digits "H" are stored in the latch circuit 7 at the timing of the clock signal φ10.

The timer circuit 5 is set for 25 minutes, that is, 10% of the set time of 25 minutes.
By counting 10%, the light emitting diode 122 which displays the next 10% is turned on.

Thereafter, in the same manner as described above, the comparison circuit 21 stores "H" in the area of the comparison register 6 when the timer circuit 5 counts 2.5 minutes, and lights up the light emitting diodes 123 to 130 in sequence.

In this way, the front threads that light up are set at regular time intervals "2.
The number of lit diodes increases by moving sequentially every 5 minutes.

The control unit 2 derives a timer output when the comparison circuit 21 derives a coincidence output 410 times, that is, when the changed time reaches the set time of 25 minutes, and causes the light emitting diodes 121 to 130 to blink.

In addition, in the above-mentioned embodiment, the light emitting diodes are connected at a certain time interval, that is, the set time is divided by the number of light emitting diodes.
The amount of change was displayed by turning on the lights one after another at 2.5 minute J intervals and increasing the number of lights on. You can also do this.

Further, in the above-mentioned embodiment, the case where the set time is 25 minutes has been described, but if the set time is set to 50 minutes, for example, the light emitting diode is turned on every 5 minutes.

In this way, the set time can be arbitrarily determined by the setting switch, and the time intervals at which the light emitting diodes are turned on and move are sequentially shifted at the time intervals obtained by dividing the set time by the total number of light emitting diodes.

Furthermore, in the above embodiment, the timer circuit 5 is a minute timer, but it can be made into a second timer by making the reference pulse input to the timer circuit 5, for example, a 0.1 second pulse. It can also be made into a timer by inputting a 1 hour pulse.

Further, the display of the change time is not limited to a light emitting diode, and a liquid crystal display having, for example, 50 or 100 display segments may be used.

In this case, there is an advantage that the change time can be displayed in more detail.

As described above, according to the present invention, the current elapsed time is
Since the set time is displayed on a display that moves sequentially at time intervals divided by the number of display segments, it is very easy to visually check the ratio of the current elapsed time and remaining time to the set time. I can do it.

Further, since the means for setting the set time and the display are provided on the same plane, it is very easy to grasp the ratio of the elapsed time to the set time.

Furthermore, since the set time can be set to any desired time, the time display device becomes a versatile time display device.

[Brief explanation of drawings]

FIG. 1 is an external view of one embodiment of the present invention. FIG. 2 is a circuit block diagram of the embodiment of FIG. 1. In the figure, 11 is a setting switch, 12 is a display, 12
1 to 130 are light emitting diodes, 2 is a control unit, 21 is a comparison circuit, 4 is a comparison register, 5 is a timer circuit, 6 is a display register, 7 is a latch circuit, 8L83 is an AND gate, 8
2 indicates an or gate, and 84 indicates a prohibition gate.

Claims (1)

[Scope of Claims] 1. A time display device that displays elapsed time with respect to a set time, comprising: time setting means capable of setting an arbitrary time; and a plurality of display segments provided on the same surface as the setting means. a register for storing a time obtained by dividing the set time by the number of display segments; means for detecting elapsed time for each divided time interval; detecting the time stored in the register and the elapsed time. a circuit for comparing the detection times of the means, display moving means for sequentially moving the display of the display segments in response to a coincidence output of the comparison circuit, whereby the display is at a constant value stored in the register; A time display device characterized by sequential movement at time intervals.