JPH01124480A - Navigation timer - Google Patents

Abstract

PURPOSE: To facilitate a time measurement for an outward trip and a timer setting for a homeward trip by providing a memory which stores the output data of an up-down counter, a pre-set circuit, a detection circuit which operates a buzzer, a memory which stores the output data of an azimuth counter, and a switch control circuit. CONSTITUTION: By the output of a switch control circuit 7 on an outward trip, an up-down counter 2 starts an up counting by the output of a time standard oscillating-dividing circuit 1, and corrects an azimuth counter 8 to a desired azimuth. When a second switch operation is performed, the output data of the up-down counter 2 is stored in a memory A-3, and the measuring is resumed, and the azimuth counter 8 is operated as well, and the operation is stored in a memory B-9, and these motions are repeated. When a switch operation for a homeward trip is performed, a pre-set circuit 4 pre-sets the data in the memory A-3 in the up-down counter 2, and a down counting is started. The azimuth of the memory B-9 is inverted at 180 deg., and is displayed by a display device 10, and when the up-down counter 2 becomes '0', a detection circuit 5 detects that state, and operates a buzzer by a buzzer operating circuit 6.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a circuit configuration of a timer.

[Conventional technology]

Traditional timers allow the user to set a certain desired time.
It started a timer and when it reached ``0'', a buzzer sounded.

[Problem that the invention seeks to solve]

However, with the above-mentioned conventional technology, it is fine if you know the time you want to measure from the beginning, but when you try to use it in a navigation system, etc., first measure the time from base point to base point with a stopwatch etc. on the outbound trip, and then The only way to do this was to record the time one after another, set the recorded time on a timer, and start it on the return trip, which was a very cumbersome operation. Therefore, the present invention is intended to solve this problem, and its purpose is to provide a timer that makes it very easy to measure the time on the outbound trip and to set the timer on the return trip.

[Means for solving problems]

The navigation timer of the present invention has an up/down counter that measures the output of the time standard oscillation/frequency divider circuit, a memory A that stores multiple output data of the up/down counter, and a memory A that stores multiple output data of the up/down counter. A preset circuit that presets the stored data in the up/down counter, a detection circuit that detects "0" in the output data of the up/down counter and drives a buzzer, and a direction in which the lighting position of the display is changed by switch operation. It is characterized by comprising a memory B for storing a plurality of output data of a counter and an azimuth counter, and a switch control circuit for controlling these circuits.

[Effect]

According to the above configuration of the present invention, the up/down counter counts up by the switch operation on the outward journey, and the data is stored in the memory by the second switch operation, and the up/down counter It will be reset and measurement will start again. At the same time, the direction is input by operating a switch and stored in the memory 2.

By operating the switch on the return trip, the data stored in the memo IJ-A IC is preset to the up/down counter and counts down, and when it reaches "0", a buzzer sound is emitted. The direction is then displayed by the output of memory B.

〔Example〕

FIG. 1 is a block circuit diagram in an embodiment of the present invention, and when a switch is operated on the forward route, switch #
Based on the output of the control circuit 7, the up/down counter 2 starts counting up/down the output of the time standard oscillation/frequency dividing circuit 1. At the same time, the direction determining switch is operated to correct the direction counter 8 to indicate the desired direction. When the switch is operated for the second time on the outward journey, the output data of the up/down counter 2 at that time is stored in the memory A-3. At the same time, the up/down counter 2 is reset and restarts measurement. Similarly, the direction counter 8 is operated and stored in the memory B-91C. The above operation is repeated each time the switch operation is repeated.

When the switch operation for the return trip is performed, the preset circuit 4 presets the data stored in the memory A-3 in the up/down counter 2 in order of the most recently stored data, and starts counting down. Similarly, the orientation data stored in the memory B-9 is displayed on the display device 10 after being reversed by 180 degrees. Then, when the up/down counter 2 becomes "0", the detection circuit 5 detects it, and the buzzer drive port y! II6 drives the buzzer and also takes notes! The next data is read from J-A-5 and preset into the up/down counter 2, and down counting is started. Similarly, the next azimuth data is read out from memory B--9 and displayed. The above operations are repeated.

〔Effect of the invention〕

As described above, according to the present invention, there is an IC somewhere.

When doing orienteering, etc., where you go back and forth, you need to remember the direction and travel time on the outbound trip, and on the return trip, it will be automatically set and the next direction will be announced. The time will be set and the timer will operate. As a result, no matter how complicated the route you take, the direction and travel time will be memorized, eliminating the need for you to expend unnecessary effort.
Very convenient.

This is especially effective when moving underwater, such as when diving in Schieva, where the direction is unknown. It is very effective as there is no need to record in a notebook underwater, which is difficult to do in the past. The configuration of the present invention does not use particularly new technology, but is constructed from conventionally used digital technology circuits, so it can be easily converted into an engineering computer, and it can also be developed with software using apσ etc. It is possible.

Further, in the present invention, the orientation counter is operated by a switch operation to store the orientation, but the orientation can also be configured to be automatically detected using the orientation sensor.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of a navigation timer according to the present invention. 1...Oscillator/divider circuit 2...Up/down counter 3...
......Memory A 4...Preset circuit 5...Detection circuit 6...Buzzer drive circuit 7... ...Switch control circuit 8...
...Direction counter 9...Memory B 10...Display device J1/1Σ

Claims (1)

[Claims] a time standard oscillation/frequency divider circuit, an up/down counter that measures the output of the time standard oscillation/divider circuit, a first memory that stores a plurality of output data of the up/down counter, and a first memory that stores a plurality of output data of the up/down counter; A preset circuit that presets data to the up/down counter, a detection circuit that detects "0" in the output data of the up/down counter and drives a buzzer, and an azimuth counter whose display lighting position is changed by switch operation. , a second storage unit storing a plurality of output data of the azimuth counter;
A navigation timer comprising a memory and a switch control circuit that controls these circuits.