JP2000253175A - On-vehicle telephone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue speech by using an inner power source, when power supply from an outer power source is stopped due to turning-off of an ignition switch during speech, and make to execute this operation possible by using a power source ON/OFF switch. SOLUTION: This on-vehicle telephone device is provided with a connecting part 21 for connecting an outer power source with an inner power source in parallel, and a switch 22 for connecting/disconnecting the supply of the power of the inner power source and the outer power source which are connected in parallel to the device, and a control circuit 12 for controlling the switch 22 so that the power can be supplied to the device, when turning-off of an ignition switch is detected, or speech is in progress.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle telephone device capable of supplying power from an external power source of a vehicle.

[0002]

2. Description of the Related Art In an in-vehicle telephone device using a battery of a vehicle directly connected as an external power source, even if an ignition switch is turned off during parking, a telephone call can be made using an external power source by a manual switch. An in-vehicle telephone device was considered. Further, an in-vehicle telephone device that includes a switch for switching between an internal power supply and an external power supply and switches to the internal power supply when the ignition switch is turned off has been considered (see Japanese Patent No. 2845810). In addition, a first switch for switching the supply of the internal power and a second switch for switching the supply of the external power are provided. By controlling the respective switches, the ignition switch is turned on.
An in-vehicle telephone device that automatically turns on the power of the device by an internal power supply when a key is operated even in the FF mode has been considered (see Japanese Patent No. 2884510).

[0003]

However, the conventional in-vehicle telephone device requires a switch in addition to the switch for the internal power supply. Also, the ignition switch is turned off.
In the case of F, the power of the conventional vehicle-mounted telephone device is not turned on unless any operation is performed, and the passenger who does not know such specifications operates the power key first. In addition, the information of the display device, for example, information as to whether or not the user is in a communicable area, time, and the like cannot be seen only by lifting the in-vehicle telephone device during parking.

[0004]

SUMMARY OF THE INVENTION An in-vehicle telephone device according to the present invention has been made in view of the above points, and an internal power supply for supplying power to the device and an external power supply from a vehicle are connected in parallel to the internal power supply. Connecting part, a switch for interrupting the supply of power to the internal power supply and the external power supply connected in parallel, and ON / O of an ignition switch of the vehicle
Ignition ON / OFF detection means for detecting the FF, and controls the switch so as to supply power to the apparatus if a call is in progress even if the ignition switch is OFF by the ignition ON / OFF detection means. Control means is provided.

Also, an internal power supply for supplying power to the device, a connection portion for connecting an external power supply from a vehicle to the internal power supply in parallel, and a connection of the internal power supply and the external power supply connected in parallel to the device. A switch for interrupting the supply of power to the
Ignition ON / OFF detection means for detecting ON / OFF of an ignition switch of the vehicle, mounting detection means for detecting whether or not the device is mounted at a predetermined position of the vehicle, and ignition by the ignition ON / OFF detection means A control means is provided for controlling the switch so as to supply power to the apparatus when the position detection means detects that the apparatus is not placed at a predetermined position even if the switch is OFF.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a main part of the embodiment. The in-vehicle telephone device according to the present embodiment is a CDMA mobile phone that uses a plurality of carriers of the same frequency in the same cell.

A communication unit (1) transmits a signal from a baseband unit (3) to be described later to a base station via an antenna (2), and transmits a signal from a base station via the antenna (2). Or receive.

[0008] (3) is a baseband unit, which is CDMA
It has a processing circuit (31) and an audio codec (32).
The CDMA processing circuit (31) performs code division multiple access, scrambling, error control, and timing detection. The audio codec (32) compresses (encodes) and decompresses (decodes) audio.
Or a conversion between analog and digital, and changes the reception volume and microphone sensitivity by an internal amplifier circuit (not shown).

Reference numeral (4) denotes a speaker which is used for talking to the ear, and converts the electric signal of the baseband section (3) amplified by the amplifier circuit (5) into sound. (6) is a microphone used for telephone conversation, which converts voice into an electric signal. (7) is an amplifying circuit, which amplifies the output of the microphone (6) and outputs it to the baseband unit (3).
(8) is a speaker for making a call available to surrounding people, and is provided on the back of the surface on which the ear speaker (4) is provided. The speaker (8) converts the electric signal of the baseband section (3) amplified by the amplifier circuit (9) into sound. The speaker (8) also sounds an incoming call notification.
Reference numeral (10) denotes a connection part, and an external speaker (301) of the car kit (30) and an external microphone (302) are connected via a cable (303 in FIG. 2). The external speaker (301) and the external microphone (302) are used for hands-free communication.

A switching circuit (11) is a control circuit (described later) for connecting the three amplifying circuits (5), (7), (9) and the connection section (10) to the baseband section (3). 12)
ON / OFF by the control of. Note that these three amplifier circuits (5), (7), and (9) have fixed gains, and cannot change the receiving sound volume or the sensitivity of the microphone.
The control of the control circuit (1
The audio codec (32) of the baseband unit (3) performs the control under the control of (2).

Reference numeral (12) denotes a control circuit composed of a microprocessor. The ROM (1) stores an operation program.
Each part is controlled based on 3). (14) is a RAM for storing information necessary for the operation of the control circuit (12).

Reference numeral (15) denotes a liquid crystal display unit, which displays a telephone number, a time, a mark indicating whether or not the telephone is within a call area, presence / absence of a text message, presence / absence of a voice message, and the like. (16) is a vibrator, which generates vibration at the time of an incoming call under the control of the control circuit (12). (17) is an ignition ON / OFF detecting means for detecting ON / OFF of an ignition switch of the vehicle and outputting it to the control circuit (12).

(18) is a placement detecting means having a magnetic detecting section (181) such as a reed switch or a Hall element.
As shown in FIG. 2, a mounting portion (40) having a magnet (401) is fixed to a vehicle, and when a mobile phone device is mounted on the mounting portion, a magnetism detection unit close to the magnet (401) is provided. (1
81) detects magnetism, and the placement detection means (18) outputs a signal indicating that the placement has been made to the control circuit (12).

Numeral (19) is an input means, which is a numeric keypad (191) for inputting a telephone number, a call key (192) for starting a call, and an end key (193) for ending a call. And a power key (194) for turning on / off the power of the apparatus.

(20) DC 3.6 consisting of a rechargeable battery
V internal power supply. Reference numeral (21) denotes a connection portion for an external power supply, and the external power supply (5) is connected via a cable (303 in FIG. 2).
0) (Cigarette insertion slot of the vehicle). The external power supply (50) is 12 V DC, and depending on the type of vehicle, there are those that supply DC 12 V power when the ignition switch is OFF and those that do not. Connection part (21)
Is connected so as to convert an external power supply (50) of 12V to a voltage DC4.1V slightly higher than the voltage of the internal power supply (20) and to supply power in parallel with the internal power supply. A switch (22) controls a power supply of the internal power supply (20) and the external power supply (50) connected in parallel to the control circuit (1).
Intermittent by the control of 2). When the external power supply (50) is supplied, the internal power supply (20) is charged by the external power supply (50).

Next, main operations of the present invention will be described. FIG. 3 is a flowchart showing the operation of the control circuit (12). The control circuit (12) turns off the power if the power key (194) is pressed when the power is on (Y in S1, Y in S2, S3). That is, the switch (22) is opened to cut off the supply of the internal power (20) and the external power (50). If the power key (194) is pressed when the power is off, the power is turned on (Y in S1, N in S2,
S4). That is, the switch (22) is closed to supply the internal power (20) and the external power (50).

The control circuit (12) turns on the power when the ignition ON / OFF detection means (17) detects that the ignition switch has been turned on (S).
4).

Further, even if the ignition switch is turned off (N in S5), the control circuit (12) turns off the ignition switch during a call (N in S6).
Is notified by an alarm or the like of the speaker (8) (S7), and the power is turned on (S4). This allows
Even if the ignition switch is turned off during a call, the call can be continued.

Further, the control circuit (12) confirms that the apparatus is not mounted on the mounting section (40) by the mounting detecting means (18) even when the ignition switch is turned off (N in S5). When it is detected (N in S8), the fact that the ignition switch is OFF is notified by an alarm or the like of the speaker (8) (S7), and the power is turned ON (S7).
4).

When the ignition switch is turned off (N in S5), the control circuit (12) is not in a call (N in S6) and the device is mounted on the mounting portion (40). If yes (Y in S8), the power is turned off (S9).

[0021]

As described above, according to the present invention, when the ignition switch is turned off and the supply of external power is stopped during a call, the call can be continued using the internal power supply. Further, when external power is supplied even when the ignition switch is turned off during a call, the external power can be used to reduce the consumption of internal power.

The internal power supply is provided in parallel with the external power supply, and a switch for turning on / off the parallel power supply is provided, so that the internal power supply when no external power is supplied by the ignition switch is turned off. Supply and interruption and manual power ON / OFF can be performed with a single switch.

Further, even if the ignition switch is turned off and the supply of external power is stopped, the telephone device can be maintained using the internal power supply only by lifting the telephone device from the mounting portion. The information on the display unit can be notified without performing the operation.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a state in which the mobile phone device of the embodiment is mounted on a vehicle.

FIG. 3 is a flowchart showing a main operation of the embodiment.

[Explanation of symbols]

 Reference Signs List 12 control circuit 15 display unit 17 ignition ON / OFF detection means 18 placement detection means 20 internal power supply (rechargeable battery) 21 connection unit (for external power supply) 22 switch 30 car kit 40 placement unit 50 external power supply 194 power key

Continuation of the front page (72) Inventor Yukio Nishimoto 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture F-term (reference) 5K027 AA16 BB02 EE11 GG02 5K067 AA34 BB03 BB43 EE02 HH01 HH21 HH22 KK00 KK05 NN05

Claims (2)

[Claims] 1. An internal power supply for supplying power to the device, a connection portion for connecting an external power supply from a vehicle to the internal power supply in parallel, and an internal power supply and the external power supply connected in parallel into the device. Switch for interrupting the supply of power to the vehicle, ignition ON / OFF detection means for detecting ON / OFF of an ignition switch of the vehicle, and communication even if the ignition ON / OFF detection means detects that the ignition switch is OFF. A vehicle-mounted telephone device, further comprising control means for controlling the switch so as to supply power to the device if the device is in the middle. 2. An internal power supply for supplying power to the device, a connection portion for connecting an external power supply from a vehicle to the internal power supply in parallel, and an internal power supply and the external power supply connected in parallel to the device. Switch for interrupting the supply of power to the vehicle, ignition ON / OFF detecting means for detecting ON / OFF of an ignition switch of the vehicle, and mounting detecting means for detecting whether the device is mounted at a predetermined position of the vehicle. Even if the ignition ON / OFF detecting means detects that the ignition switch is OFF, if the position detecting means detects that the apparatus is not mounted at a predetermined position, power is supplied to the apparatus. A vehicle-mounted telephone device, further comprising control means for controlling the switch.