JPH08304524A - Gps receiver - Google Patents

Abstract

PURPOSE: To check to see if data are most recent data or not and check the position measurement accuracy by displaying a specific symbol for indicating that the data are the most recent position measurement data and for indicating the position measurement accuracy in response to the updating of the position measurement data. CONSTITUTION: In a core 1, position measurement data are successively outputted to a device body 3 and most recent position measurement data are successively updated and displayed correspondingly on a display 3A. A symbol X is displayed for a specific amount of time for each update and a user can check whether the position measurement data being displayed currently are the most recent data or not. Also, a symbol '*' appears when the position measurement data are updated and accuracy is higher than a specific threshold. On the other hand, when the accuracy is lower than the threshold, a symbol '?' appears. When no position measurement data are updated, no symbol X appears and only position measurement data appear. Therefore, a user can constantly check and utilize the most recent position measurement data and can check accuracy as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a GPS receiver suitable for receiving radio waves from GPS satellites and performing positioning.

[0002]

2. Description of the Related Art A GPS receiver displays radio waves from GPS satellites to display latitude and longitude of the current position (positioning data).

In this case, the positioning data is updated and displayed in sequence with new data as the user moves.

[0004]

However, there is an inconvenience that it is not possible to judge whether or not the positioning data is the latest by simply updating the positioning data.

An object of the present invention is to provide a GPS receiving device which can easily confirm that the positioning data is the latest one and can confirm the accuracy of this positioning data.

[0006]

In the GPS receiving apparatus according to the present invention, positioning data including at least latitude and longitude are:
In the GPS receiving device that is sequentially updated and visibly displayed, in response to the update of the positioning data, a predetermined symbol indicating that the positioning data is the latest is displayed, and the predetermined symbol is at least It is a symbol that responds to information contents including positioning accuracy.

In the GPS receiving apparatus according to the present invention, when the positioning data is updated, a symbol indicating that the positioning data is the latest is displayed, and the symbol responds to the information content including the positioning accuracy. Therefore, the user can always confirm that the positioning data is the latest, and can also confirm the accuracy of this positioning data.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a GPS receiver according to the present invention will be described below with reference to the drawings.

As can be seen from FIG. 1, the GPS receiving device is based on a core 1 which receives radio waves from GPS satellites for positioning and an output signal (measurement data) from the core 1,
The device main body 3 that displays the latitude and longitude on the display device 3A (for example, an LCD display of 20 characters x 2 lines), and operates various functions of the device with the operation unit 3B.
And have.

As shown in FIGS. 2 and 3, when the latitude P, the longitude Q, etc. are displayed, the symbol x ("*",
"?") Is displayed at the same time.

In the core 1, the positioning data are sequentially transmitted to the device main body 3
And the latest positioning data is sequentially updated and displayed on the display device 3A.

Therefore, by displaying the symbol x for a predetermined time each time it is updated, the user can confirm that the currently displayed positioning data is the latest.

Since the accuracy of the positioning data changes depending on the arrangement of GPS satellites, if the accuracy is higher than a certain threshold value, the symbol "*" is used, and if the accuracy is lower than the threshold value, the symbol "?" Information about accuracy can be displayed at the same time without increasing the number of displayed characters.

The symbol x and its number can be appropriately selected, and the meaning of the symbol x is such as the number of GPS satellites (3 to 4) being received.
It is also preferable to use other information.

Next, the procedure of displaying on the apparatus main body 3 will be described with reference to the flowchart of FIG.

First, when the positioning data is updated (YES in step S1), the condition is that the accuracy is higher than a certain threshold value (preset) (step S3YE).
S), the symbol “*” is displayed (step S5), and the positioning data at this time is used by the application (for example, data for navigation) (step S7).

On the other hand, when the positioning data is lower than the threshold value (step S3 NO), the symbol "?" Is displayed (step S9), and the data at this time is not used by the application (step S11).

When the positioning data is not updated (NO in step S1), the symbol x is not displayed (the symbol x is erased after a predetermined time), and only the positioning data is displayed (step S13). The data is also not used by the application (step S11).

As described above, in this embodiment, when the positioning data is updated, the symbol x is displayed together with the positioning data.

Therefore, the user can always check and use the latest positioning data.

Further, according to the present example, the symbol x is set to "*" or "?" Depending on whether the positioning data is higher or lower than the threshold value. Therefore, the user also adjusts the accuracy of the positioning data. You can check.

[0022]

As will be understood from the above description, in the GPS receiver according to the present invention, when the positioning data is updated, a symbol indicating that the positioning data is the latest is displayed and Since this symbol is a symbol that responds to the information content including the positioning accuracy, the user can always confirm that the positioning data is the latest, and at the same time, the accuracy of this positioning data can be confirmed together.

[Brief description of drawings]

FIG. 1 is a block diagram of a preferred embodiment of a GPS receiver according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a symbol display when accuracy is high.

FIG. 3 is an explanatory diagram showing an example of a symbol display when accuracy is low.

FIG. 4 is a flowchart showing the operation of the device of the present invention.

[Explanation of symbols]

1 core, 3 device main body, 3A display, 3B operation unit, × symbol

Claims (2)

[Claims] 1. A GPS receiving device in which positioning data including at least latitude and longitude are sequentially updated and visibly displayed, and in response to the positioning data being updated, the positioning data is the latest positioning data. The GPS receiving device is characterized in that a predetermined symbol shown is displayed, and the predetermined symbol is a symbol responding to information content including at least positioning accuracy. 2. The positioning accuracy is information on the number of GPS satellites that can receive radio waves.
The GPS receiver according to 1.