JP2002333328A - Portable navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit detection of a condition that a VICS is mounted on a vehicle due to a VICS regulation that does not display the VICS when the VICS is not mounted on the vehicle in a portable navigation device. SOLUTION: The portable navigation device comprises a control circuit 21 that controls displaying to the displaying part of the VICS information, and a brake terminal 28 where a jack that outputs a detecting signal which detects whether a side brake is applied or not is inserted into. The brake terminal 28, where the jack that outputs the detecting signal which detects whether the side brake is applied or not is inserted into, detects whether the jack is inserted into or not to output the control circuit 21. The control circuit 21 allows to display the VICS when the jack is inserted into the jack terminal 28 and prohibits to display the VICS when the jack is not inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable navigation device capable of displaying VICS information.

[0002]

2. Description of the Related Art VICS (Vehicle Information) for transmitting congestion information to a navigation device mounted on a vehicle from April 23, 1996.
and Communication System) service has begun. This service is provided by the road traffic information communication system, and is transmitted by three communication means: FM multiplex broadcasting, radio wave beacon, and optical beacon.

[0003]

However, portable navigation devices whose production volume has been increasing in recent years are not suitable for V-type navigation devices.
When the ICS function is provided, there is a problem that the display of the VICS screen must be prohibited when it is not mounted on a vehicle, for example, when a navigation device is used in a room, according to the rules of VICS. For this reason, it has been necessary to detect the state of being mounted on the vehicle by some method.

[0004]

SUMMARY OF THE INVENTION In view of the foregoing, a portable navigation device according to the present invention has a receiving unit for receiving VICS information, a display unit, and a display unit for displaying VICS information received from the receiving unit. In a portable navigation device having a control means for controlling the display to the device and a brake terminal into which a jack for outputting a detection signal as to whether or not a side brake is applied is inserted, the brake terminal is connected to the jack terminal. It detects whether or not the jack is inserted and outputs it to the control means, and the control means outputs V when the jack is inserted into the jack terminal.
The display of ICS is permitted, and the display of VICS is prohibited when the jack is not inserted into the jack terminal.

[0005]

Embodiments of the present invention will be described with reference to the drawings. The navigation device of the present embodiment is VI
This is for displaying CS information.

[0006] VICS is a service for transmitting congestion information to a navigation device, and is permitted for a navigation device mounted on a vehicle. This service provides three levels of information, level 1 (character display, see FIG. 2), level 2 (simple graphic display, see FIG. 3), and level 3 (map display, see FIG. 4), depending on the usage fee. Is done. In level 1, character data to be displayed is transmitted. At level 2, the simple graphic data to be displayed is transmitted. At level 3, the map data itself is not transmitted, and a map database provided in the navigation device is used. In advance,
The main roads are classified and numbered, and the traffic congestion status is transmitted for each classification. How this traffic congestion information is displayed on the map is left to the navigation device.

At level 1 or level 2, road traffic information cannot be displayed unless the user selects a desired program by designating a content type such as traffic congestion or regulation, or a road type or area such as an expressway or a national road. . On the other hand, at level 3, VICS information relating to the road map being displayed is automatically searched.

[0008] This service information is performed by three communication means of FM multiplex broadcasting, radio wave beacon and optical beacon. Both communication means provide the above three levels of information. FM multiplex broadcasting is NH leased by VICS center
K (Japan Broadcasting Corporation) facilities broadcast, radio beacons will be installed on expressways led by the Ministry of Construction, and optical beacons will be installed on general roads other than expressways led by the National Police Agency. An FM receiver is required to display VICS information in FM multiplex broadcasting, a radio beacon receiver is required to display VICS information in a radio beacon, and an optical beacon is required to display VICS information in an optical beacon. A receiver is required. The present embodiment displays VICS information in FM multiplex broadcasting, and has an FM receiver.

FIG. 1 is a block diagram showing a configuration of a main part of the embodiment. This device is an FM receiver (FM tuner)
It comprises (1) a current position indicator (2), a rechargeable battery (3) as a power source, an adapter for cigarette lighter (4) or an adapter for commercial power (5).

In the FM receiver (1), an FM front end (11) amplifies a signal received from the antenna (12) to a high-frequency signal, and converts the high-frequency signal and an oscillation signal from the PLL circuit (13). Mix and output the intermediate frequency signal. The FM-IF detector (14) performs FM on the intermediate frequency signal output from the FM front end (11).
Perform detection.

The multiplex signal detection circuit (15) comprises a multiplexing filter (not shown) and a data demodulation circuit (not shown). The multiplexing filter removes an audio signal and a noise component from the output signal of the FM-IF detector (14), and LMSK (Level controlled Minimum S) multiplexed at 76 kHz.
hift Keying) Extract the signal. LMSK is a modulation method for controlling the size of a multiplex signal according to the size of a stereo audio signal. The data demodulation circuit demodulates the LMSK signal into a displayable data signal and performs an FM receiver (1).
To the control circuit (16). The control circuit (16) of the FM receiver (1) instructs the frequency to be set in the PLL circuit (13).

In the current position indicator (2), a control circuit (21) controls each section based on a program written in a ROM (22). The RAM (23) stores information necessary for the operation of the control circuit (21), for example, the update time of the displayed VICS information and the frequency of the FM multiplex broadcasting station. GPS (Global Position)
ing System) The positioning means (24) receives a radio wave from a GPS satellite, measures the current position, and outputs measured data to the control circuit (21) of the current position display (2).
(25) is a map reproducing means, which reads map information from the DVD on which the map information is written and outputs it to the control circuit (21). The display unit (26) is a liquid crystal, and displays a map, a current position, and VICS information under the control of the control circuit (21). The input unit (27) displays the current position and the VI
Various inputs related to CS are performed. The brake terminal (28) has a jack for a side brake inserted therein, detects the insertion of the jack and ON / OFF of the side brake (OFF indicates running) and outputs the detected signal to the control circuit (16). This ON / OFF is determined to be ON if the line of the side brake jack is not grounded, and is determined to be OFF if grounded.

The power supply is a cigarette lighter terminal (DC) of the vehicle.
12V), a method of supplying from a commercial power supply (AC100V) such as a household outlet, and a method of supplying from a nickel-mercury rechargeable dry battery (7.2V DC). Can be.

When supplying from the cigarette lighter terminal, the cigarette lighter adapter (4) connected to the cigarette lighter terminal of the vehicle is connected to the external power input terminal (29) of the current position indicator (2). At this time, the cigarette lighter adapter (4) transforms DC12V of the cigarette lighter terminal into DC9V. When supplying from a commercial power supply, the commercial power supply adapter (5) connected to the commercial power supply is connected to the external power supply input terminal (29) of the current position indicator (2). At this time, the commercial power adapter (5) is
Transform C100V to DC10.2V. When supplied from the rechargeable battery (3), the rechargeable dry battery (3) of DC 7.2V is connected to the battery terminal (30) of the current position indicator (2).

The transformer circuit (31) is connected to an external power input terminal (2).
DC9V or DC10.5V from 9) and 7.2V DC from the battery terminal (30) are transformed into predetermined voltages, and power is supplied to each circuit of the current position indicator (2) and the FM receiver (1). I do. The transformer circuit (31) detects a voltage applied to the external power supply input terminal (29) and outputs it to the control circuit (21). Further, the transformer circuit (31) is connected to an external power supply input terminal (29) in a state where the rechargeable dry cell (3) is connected to the battery terminal (30).
When the power of 0.5 V is supplied, the rechargeable battery (3) is charged by the power.

The operation of the embodiment will be described. FIG. 5 is a flowchart showing the operation of the control circuit (21) of the current position display (2).

The control circuit (21) determines whether or not the power supply supplied to the navigation device is the power supply of the vehicle by using a transformer circuit (3).
It is checked whether the voltage of 1) is 9 V (S1). If there is no power from the vehicle (N in S1), the display of VICS is prohibited (S2). This makes it possible to prohibit the display of the VICS when the navigation device is used with the AC100 power supply at home or when it is used while walking with the battery.

When the power of the vehicle is supplied in step S1, the control circuit (21) turns ON / OFF the side brake.
The brake terminal (2)
A check is made by the jack insertion detection of 8) (S3). Also, when ON / OFF of the side brake cannot be detected (S3
N), the process proceeds to step S2, and the VICS display is prohibited.

In step S3, ON / O of the side brake is performed.
If the FF can be detected, the side brake is ON
(Y in S4), all levels can be displayed (S5), and when the side brake is OFF (N in S4), the level is automatically fixed at 3 and displayed (S4).
6). This ON / OFF is determined to be ON if the jack of the side brake is not grounded, and is determined to be OFF if the jack is grounded.

As described above, for safety reasons, the display of levels 1 and 2, which are troublesome to operate, is prohibited.

Incidentally, the VICS display is double-prohibited by N of step 1 and N of step S3, and step 1 may be omitted.

In the above-described embodiment, VICS is received by FM multiplex broadcasting.
It can also be adapted for reception.

[0023]

According to the present invention, there is provided a side brake ON / OF which is inserted when a navigation device is mounted on a vehicle.
The insertion of the F detection jack is detected. As a result, a state where the vehicle is not mounted on the vehicle is detected.
The display of S can be prohibited.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main configuration of the present invention.

FIG. 2 is a diagram showing a VICS level 1 screen.

FIG. 3 is a diagram showing a VICS level 2 screen.

FIG. 4 is a diagram showing a VICS level 3 screen.

FIG. 5 is a flowchart showing a main operation of the present invention.

[Explanation of symbols]

 Reference Signs List 1 FM receiver 13 PLL circuit 15 Multiplex signal detection circuit 16 Control circuit (FM receiver) 2 Current position detector 21 Control circuit (Current position detector) 23 RAM 24 GPS positioning means 25 Map reproduction means 26 Display unit 27 Input unit 28 Brake terminal 29 External power input terminal 30 Battery terminal 31 Transformer circuit 3 Rechargeable battery 4 Cigarette lighter adapter 5 Commercial power adapter

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Michinori Hamada 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture F-term (reference) 2C032 HB02 HB05 HB22 HB23 HC08 HC11 HD03 HD23 2F029 AA02 AB07 AC02 AC13 5H180 AA01 BB02 BB04 BB08 BB13 EE18 FF05 FF12 FF13 FF22 FF27 FF32

Claims (1)

[Claims] 1. A receiving unit for receiving VICS information, a display unit, a control unit for controlling display of the VICS information received from the receiving unit on the display unit, and detecting whether a side brake is applied. In a portable navigation device having a brake terminal into which a jack for outputting a signal is inserted, the brake terminal detects whether or not the jack is inserted into the jack terminal and outputs the detected signal to the control means, and The portable navigation device is characterized in that the means allows display of VICS when the jack is inserted into the jack terminal, and prohibits display of VICS when the jack is not inserted into the jack terminal.