JPH054089U - Automatic world clock - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an automatic world clock that allows you to know the local time of your current location in real time without any operation. [Structure] Position comparison means for comparing the position data of a latitude and date change line previously input by using position data of a position detection system that receives a signal from a satellite and prompts the current position, and position data comparison The time difference correction means for calculating the time difference from the result obtained by the means is provided to display the time at the current position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a world clock, and more particularly to an automatic world clock that can automatically display the current time of a place even if the place changes and a time difference occurs.

[0002]

[Prior art]

 As a conventional world clock, for example, the one shown in FIG. 5 has been provided.

In the figure, 8 is a wristwatch, 8a is a time display section, and 8b is a switching button.

The time display section 8a of the wristwatch 8 is adapted to display one time and switch the display by pressing the switching button 8b to display another time.

Therefore, by increasing the number of times that can be displayed, the current time of each country in the world can be displayed by sequentially switching the switching buttons 8b.

Further, as another conventional example, there is one in which a plurality of display devices simultaneously display a plurality of times.

[0007]

[Problems to be solved by the device]

 However, in the conventional world clock, it is necessary to prepare multiple clocks or to change the time display according to the country, and use such a world clock to know the time of your current location. By the steps, "where are you now?" → "Which country is that place?" → "Is there a time difference in that country?" Furthermore, when I am currently on the move, it is difficult to know where I am now, and I have the drawback that I cannot know the exact time.

The present invention has been made in view of the above points, and its object is to solve the drawbacks of the conventional example and to perform real-time operation of the time of the place where one is currently present without performing any operation. It is about providing an automatic world clock that you can know about.

[0009]

[Means for Solving the Problems]

 FIG. 1 is a functional block diagram of the present invention. The automatic world clock of the present invention uses the position data of GPS in the world clock that displays the current time in various parts of the world, and the major latitudes that have been input in advance. The position indicated by the data obtained by GPS is provided with position data comparison means for comparing with the position data of the date change line and time difference correction means for calculating the result obtained by the position data comparison means as a time difference. It is configured to display the current time of.

[0010]

[Action]

 The operation of this invention will be described with reference to FIG. According to this invention, in the world clock that displays the current time in various parts of the world, the position data comparison means that uses the position data in GPS and compares it with the position data of the main latitude and date change lines that have been input in advance. Since the time difference correction means for calculating the result obtained from the position data comparison means as the time difference is provided, it is possible to display the current time of the current location of oneself in real time without any operation. Will be able to

[0011]

【Example】

 An embodiment of the automatic world clock according to the present invention will be described with reference to FIGS.

FIG. 1 is a functional block diagram of the present invention, FIG. 2 is a block diagram of a hardware configuration, FIG. 3 is a diagram showing an example in which the present invention is applied to a timepiece in an airplane, and FIG. 4 is a flowchart.

In the figure, 1 is a position detection system which receives a signal from a satellite to detect its own current position and outputs its position data to a microcomputer. 2 is position detection system 1 which detects position data. A microcomputer 3 for calculating the time difference by inputting and comparing it with the previously stored latitude position data, 3 is a clock display unit for displaying the current position time by adding or subtracting the time difference calculated by the microcomputer 2. Is the earth, 5 is a satellite that transmits data for the position detection system 1 to calculate position data, 6 is an airplane equipped with the position detection system 1, 7 is installed in the airplane, and the time of the current flight position and It is a clock display device that displays the time of each place.

The microcomputer 2 is composed of a central processing unit for processing data, a ROM for storing programs to be executed, a RAM for storing data, and an input / output port. The position detection system 1 is a microcomputer. 2 and the clock display unit 3 are connected to the output port of the microcomputer 2.

In the automatic world clock of the present invention, the position detection system 1 detects the current position based on the data sent from the satellite 5, and the position data is sent to the microcomputer 2 to send the position data to the microcomputer. The time data of the current position is displayed by comparing with the latitude data stored in the RAM and calculating the time difference and adding / subtracting to / from the clock display unit 3.

Next, the operation of this automatic world clock will be described based on the flowchart of FIG.

The position detection system 1 receives the position data from the satellite 5 and outputs the current position data (step S1).

Next, the microcomputer 2 to which the current position data output from the position detection system 1 is input is compared with the position data (reference data) of the time change point stored in advance (step S2).

It is checked whether or not there is a difference in position data as a result of step S2, and it is necessary to correct the time at that point (step S3).

If it is necessary to correct the time in step S3, the correction time is calculated from the reference data stored in advance, and the corrected data is sent to the clock display unit 3 for adjustment so as to match the current time (step S4 ).

Then, the elapsed time at the combined current time is added and displayed on the time display unit 3 (step S5). If there is no correction time in step S3, the elapsed time is added at that time. If you add and display, the current time at that point will always be displayed.

As described above, the feature of the present invention is that the conventional timepiece has a shape in which the side that moves on the basis of “location” is adjusted to that, whereas the reference is always on the side that moves. ..

In other words, according to this invention, since the place where the timepiece is located is always used as a reference, no special adjustment or switching operation is required, and the device can be used like a normal timepiece.

As described above, the automatic world clock of the present invention uses the position data of GPS in the world clock that displays the current time in various parts of the world, and uses the position data of GPS to input the main latitude and date line positions A position data comparison means for comparing with the data and a time difference correction means for calculating the result obtained by the position data comparison means as a time difference are provided to display the current time of the point indicated by the data obtained by GPS. It was made.

Further, as another application example, the data of the position (latitude, longitude) of the border is input in advance, and based on the data, the current position data by GPS is the country where the one is now. It can also be made known easily.

[0026]

[Effect of the device]

 Since the automatic world clock according to the present invention is configured as described above, it has the following effects. $ It has the effect of eliminating the need for any operation to set the clock to know the time of the current location like the conventional world clock.

Further, there is an effect that it is not necessary to prepare the previous information for adjusting the time at the current location.

[Brief description of drawings]

FIG. 1 is a functional block diagram of the present invention.

FIG. 2 is a block diagram of a hardware configuration.

FIG. 3 is a diagram showing an example in which the present invention is applied to a timepiece in an airplane.

FIG. 4 is a flowchart.

FIG. 5 is a diagram showing operation and display of a conventional world clock.

[Explanation of symbols]

 1 Position Detection System 2 Microcomputer 3 Clock Display 4 Earth 5 Satellite 6 Airplane 7 Clock Display

Claims (1)

[Claims for utility model registration] [Claim 1] In the world clock that displays the current time in various parts of the world, the position data in a position detection system (hereinafter referred to as GPS) that accurately prompts the current position by satellite is used, The position data comparing means for comparing with the position data of the main latitude and date change line which have been input, and the time difference correcting means for calculating the result obtained by the position data comparing means as the time difference are provided, and the position data is obtained by the GPS. An automatic world clock characterized by being configured to display the current time of the point indicated by the data.