JP2785377B2 - Car phone equipment - Google Patents

Description

[Detailed Description of the Invention] (Object of the Invention) (Industrial application field) The present invention relates to a so-called cordless type mobile telephone device.

(Prior Art) In recent years, there has been a remarkable spread of car phones, but on the other hand, various improvements have been made for wider spread. One of the improvements is a cordless telephone. That is, since the conventional car phone handset is connected to the cradle (table) by a curl cord, the cord wraps around the steering wheel or the shift lever, etc., thereby hindering safe driving, or the cord frequently being subjected to excessive force. However, there are problems such as breakage of cords and other problems that may occur easily.However, these problems can be solved by using a cordless system. The advantage is that the convenience can be expanded, for example, it is possible to use the handset outside the vehicle by using it.
−39636).

(Problems to be Solved by the Invention) By the way, current car telephones are configured such that power is not supplied while the engine is stopped in order to prevent useless consumption of a vehicle-mounted battery that is a driving source thereof. But,
In a cordless car telephone, there is a case where a telephone call is made from outside the vehicle after the vehicle is parked because of the freedom such as taking out the handset outside the vehicle as described above. In order to effectively utilize such convenience, it is necessary to supply power even after the engine is stopped.However, continuing to supply power forever when not in use will result in wasteful consumption of the battery. Is eagerly awaited.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object of the present invention is to provide a car telephone device in which useless consumption of a battery is properly prevented without impairing convenience.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, as shown in FIG. 1, the present invention operates by power supply from a vehicle-mounted battery and can be connected to a general public telephone network. A portable device 3 which is wirelessly connected to the base device 1 and which can make a call via the base device 1
Notification means 5 for detecting that there is no incoming / outgoing call within a first set time after stopping the engine of the vehicle, and notifying the slave unit 3 of an inquiry about continuation of use, and the slave unit within the second set time from the notification. The main point is that there is provided a power supply stopping means 7 for stopping the power supply to the base unit 1 when there is no response from the use connection 3.

(Operation) In the mobile telephone device according to the present invention, it is detected that there is no incoming / outgoing call within the first set time from the stop of the engine of the vehicle, and the mobile telephone is wirelessly connected to the base unit to make a call via the base unit. After informing the portable device that can be
Further, when there is no response from the slave unit to continue use within the second set time, the operation is performed by the power supply from the vehicle-mounted battery, and the power supply to the base unit that can be connected to the general public telephone network is stopped.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 2 and FIG. 3 are diagrams showing the configuration of a handset 13 constituting a vehicle-mounted fixed part and a child device, respectively, of an automobile telephone according to one embodiment of the present invention.

In FIG. 2, an in-vehicle fixed unit includes a mobile phone 11 for an automobile telephone system connectable to a general public telephone network, and a grader for relaying control signals and voice signals between the mobile phone 11 and the handset 13. (Table) 15 and a power supply controller 17 for controlling power supply from the battery to the mobile device 11. Note that the mobile device 11 and the grader 15 constitute a parent device, and the power supply control unit 17 constitutes a notification unit and a power supply stop unit.

The mobile device 11 includes an antenna 20, a duplexer 21, a receiving unit 23, and a transmitting unit 25 for transmitting and receiving to and from a general public telephone network.
And a frequency synthesizer 27 for setting a used channel,
The configuration includes a control unit 29 that controls the operation of the entire mobile device 11.

Gradle 15 includes an antenna 30, a duplexer 31, a receiver 33, a transceiver 33 for transmitting and receiving to and from the handset 13.
35 and frequency synthesizer 37 to set channels to use
And a control unit 39 that controls the entire operation of the gradle 15.

The power supply control unit 17 controls the mobile device from the car battery (BATT).
The configuration includes a relay unit 41 for turning on / off a power supply line to the power supply 11 and a power supply control unit 43 for controlling the relay unit 41 based on an ignition (IGN) signal and a signal from the control unit 39.

Note that power is supplied to the grader 15 via the mobile device 11.

On the other hand, the handset 13 includes an antenna 50 for transmitting / receiving to / from the gradle 15, a duplexer 51, a receiver 53, a transmitter 55, and a frequency synthesizer for setting a channel to be used.
57 and a control unit 59 for controlling the operation of the entire handset 13
And a display unit 61, a keyboard 63, a receiving unit 65, and a transmitting unit 67 connected to the control unit 59. The display unit 61 is composed of, for example, a liquid crystal, an LED, or the like, and notifies various kinds of information to the user. Keyboard 47
Is for inputting various information such as input of a dial number. The receiver 65 is for outputting the transmitted voice, and includes a receiver circuit 69 and a speaker 71. The transmitting section 67 is for inputting a voice to be transmitted, and includes a transmitting circuit 73 and a microphone 75.

Next, the operation of this embodiment will be described with reference to FIGS. FIG. 4 shows the power supply control unit 43, and FIG.
FIG. 6 is a flowchart of each processing in the control unit 59 of the handset 13.

Upon receiving the ignition-on signal accompanying the start of the engine, the power supply control unit 43 sets the relay unit 41 to the conductive state and starts power supply from the battery to the mobile device 11 and the gradle 15 (step 101). Then, the monitoring of the state of the ignition signal is started at the same time as the power supply is started.
The power supply control process after 3 is started (step 102).

In step 103, the power supply control unit 43 activates the first timer, starts counting a first set time (for example, 20 minutes), and then starts a call from the grade 15 within the first set time. Monitor incoming / outgoing calls based on the signal or input of a power-off signal from the grader 15 (steps 104 and 10).
5,106). When an incoming / outgoing call occurs during this monitoring, the power supply control unit 43 temporarily stops driving of the first timer, and restarts the first timer after the end of the call based on the call end signal from the grader 15 ( Srep 107,108). Also, the first
When the power-off signal is input within the set time, and when there is no incoming / outgoing call or the power-off signal is not input, the power supply control unit 3 determines that there is no intention to use the call and notifies the user. The process proceeds to step 109 to confirm that the power supply has stopped.

In step 109, the power supply control unit 43 outputs a time-out signal to notify the graduation 15 that the power supply is to be stopped, and starts the second timer to count the second set time (for example, 5 minutes). In step 110, 111, 112, and 113, it monitors the incoming / outgoing call based on the call start signal from the grader 15 or the input of the power-off signal from the grader 15 within the second set time. If an incoming / outgoing call occurs during this monitoring, the power supply control unit 43 temporarily stops the driving of the second timer, and restarts the first timer after the end of the call based on the call end signal from the grader 15 ( Step 10
7,108). If a power-off signal is input during monitoring, the power supply control unit 43 determines that there is no intention to use a call, sets the relay unit to a non-conductive state, and immediately stops power supply (step 114). . If the power-off signal is not input within the second set time, it is determined that there is an intention to use and the process returns to step 103.

On the other hand, the processes in the grader 15 and the handset 13 are performed as follows with respect to the processes in the power supply control unit 43.

That is, in the power supply state, the control unit 39 of the grade 15 checks whether there is an outgoing operation from the handset 13,
, And the presence or absence of the above-mentioned timeout signal from the power supply control unit 43 (steps 201 and 20).
2,203). If there is an outgoing call operation, a call start signal is output to the power supply control unit 43 and predetermined call processing is performed. When the call ends, a call end signal is output to the power supply control unit 43 and the process returns to step 201 (steps 204, 205, 206). . If there is an incoming call, the process proceeds to step 204 described above to confirm the input of an incoming response signal from the handset 13 and start a call, and if there is no incoming response signal, the handset 13 comes out of the talkable area. It is considered that the power of the handset 13 is turned off or the like, so that a power-off signal is output to the power supply control unit 43 (step 210). Further, when the time-out signal is input, the power source alarm signal is transmitted to the handset 13, and if there is a response signal from the handset 13 which is an indication of the user's intention to use, the process returns to step 201, and the If not, a power-off signal is output to the power supply control unit 43 (step 208,
209,210).

Further, the control unit 59 of the handset 13 determines whether or not there is a calling operation by operating the keyboard 63, the mobile device 11, and the grade control.
15 to monitor the presence or absence of an incoming call and the presence or absence of the above-mentioned power alarm signal from the grader 13 (steps 301, 302,
303). If there is an outgoing call operation, predetermined call processing is performed, and the process returns to step 301 (step 304). If there is an incoming call, after outputting an incoming response signal to the handset 13,
Proceed to 304 described above to start a call (step 30)
Five). Further, when the power supply alarm signal is input, the fact is notified by the display unit 61 (this display is held for 5 minutes), and if a predetermined response is received through the keyboard 63, the response signal is graded. Output to file 15 (step 306,
307,308). That is, the intention of the user to use is confirmed based on the presence or absence of a response based on the notification of the power supply stoppage by the display unit 61.

Although not shown in the above-described processing,
If the engine is restarted during the timer operation, the timer operation is stopped at that point and the operation returns to the normal operation.

Therefore, according to the present embodiment, while the power supply is possible even after the engine is stopped, the power supply is stopped after confirming to the user that there is no intention to use when the non-use state continues for the first set time. Therefore, it is possible to control wasteful consumption of the battery as much as possible without impairing an effective function peculiar to the cordless system such that the handset can be taken out of the vehicle and used during parking.

[Effects of the Invention] As described above, according to the present invention, it is detected that there is no incoming / outgoing call within the first set time from the stop of the engine of the vehicle, and the wireless connection is made to the master unit via the master unit. After informing the portable use unit capable of talking about the continuation of use, and further not responding to the use continuation from the sub unit within the second set time, it is operated by the power supply from the vehicle-mounted battery and connected to the public telephone network. On the other hand, the power supply to the connectable master unit is stopped, so that wasteful consumption of the battery can be properly prevented without impairing the convenience.

[Brief description of the drawings]

FIG. 1 is a diagram corresponding to claims, FIGS. 2 and 3 are diagrams showing a configuration of an embodiment of the present invention, and FIGS. 4 to 6 are process flowcharts of the embodiment. DESCRIPTION OF SYMBOLS 1 ... Master device, 3 ... Slave device 5 ... Notification means, 7 ... Power supply stopping means 11 ... Mobile device, 13 ... Handset 15 ... Gradle, 17 ... Power supply control unit 20 ... Antenna, 21 Duplexer 23 Receiving unit 25 Transmitting unit 27 Frequency synthesizer 29 Control unit 30 Antenna 31 Duplexing unit 33 Receiving unit 35 Transmitting unit 37 ... frequency synthesizer 39 ... control unit, 41 ... relay unit 43 ... power supply control unit, 50 ... antenna 51 ... ... duplexer, 53 ... receiving unit 55 ... transmitting unit 57 ... frequency synthesizer 59 ... ... Control unit, 61 ... Display unit 63 ... Keyboard, 65 ... Reception unit 67 ... Transmission unit, 69 ... Reception circuit 71 ... Speaker, 73 ... Transmission circuit 75 ... Microphone

Claims (1)

(57) [Claims] 1. A base unit that operates by being supplied with power from a vehicle-mounted battery and is connectable to a general public network, a portable base unit that is wirelessly connected to the base unit and is capable of talking via the base unit. A notification means for detecting that there is no incoming / outgoing call within a first set time after stopping the engine of the vehicle and notifying the slave of an inquiry about continuation of use; A power supply stopping means for stopping power supply to the base unit when there is no response.