JP2904174B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone,
In particular, the present invention relates to a digital mobile phone used as a car phone.

[0002]

2. Description of the Related Art As a conventional technique, Japanese Patent Application Laid-Open No. Hei 4-2469 is known.
Japanese Patent Publication No. 25, “Vehicle-mounted car telephone device” is mentioned as an example. As shown in FIG. 3, the handset 32 of the car telephone terminal 31, the switch 36 for switching between the hands-free device 33, the detection unit 34 for detecting the vehicle speed of the car, and the operation based on the detected vehicle speed. The switching unit 36 is configured to be switched by the control unit 35, and the switching unit 36 is switched to the hands-free device 33 when the vehicle speed is equal to or higher than a predetermined speed.

[0003]

However, the size of a portable telephone is smaller than that of a conventional portable telephone, and the use of an on-vehicle mobile telephone is being reduced. 2. Description of the Related Art In many cases, a driver removes a mobile phone from a pocket and uses it, or puts the mobile phone in a passenger seat and picks up the mobile phone without using a handsfree device. However, such a method of using the mobile phone is not preferable because the driver's attention may be concentrated on the phone when traveling at high speed, leading to a serious accident.

[0004] It is an object of the present invention to provide a portable telephone which issues a warning according to the vehicle speed when the portable telephone is used in a running vehicle and, when the vehicle speed exceeds a predetermined vehicle speed, interrupts the call together with the warning.

[0005]

A portable telephone according to the present invention comprises:
An antenna, a radio unit, a display unit, a mobile phone main body including at least a handset, a moving speed of the mobile telephone main body, a detector for detecting a frequency deviation value due to a Doppler shift of a radio wave of a communication partner, and a detected frequency. Means for notifying the call partner and the user of the degree of risk according to the deviation value, a rank of the degree of risk corresponding to the frequency deviation value, a storage device for holding information corresponding to the rank, A control unit is provided for interrupting or stopping the call when the set threshold is exceeded.

Further, the risk notifying means selects a risk rank based on a frequency deviation value detected from the risk rank held in the storage device, and decodes the value of the selected rank. Means for notifying the obtained audible sound signal by superimposing or interrupting the handset.

The risk notifying means selects a risk rank according to a frequency deviation value detected from the risk rank stored in the storage device, and decodes the selected rank. Means for superimposing or interrupting the audible sound signal on the handset and notifying by displaying a message corresponding to the risk rank on the display unit.

Further, the audible sound signal is an intermittent sound,
Each time the rank of the risk level increases, there is provided a means for notifying the audible sound signal, in which the cycle of the intermittent sound is short and the output level is high, by superimposing or interrupting the handset.

Further, the control unit for interrupting or stopping the call has a control unit for arbitrarily setting a time until the call is interrupted or stopped.

Therefore, the portable telephone according to the present invention, by detecting the frequency deviation value due to the Doppler shift based on the moving speed, limits the call according to the degree of danger and assists safe driving.

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, a mobile phone according to a first embodiment of the present invention
The mobile phone body 1 includes a wireless unit 3, a control unit 4, a Doppler shift detection unit 5, a display unit 6, a message storage unit 7, and a handset 8. .

Next, the operation of one embodiment of the present invention will be described.
This will be described in detail with reference to FIG. When the radio unit 3 receives a call from the other party (S1), the radio frequency shifts depending on the moving speed of the mobile phone body 1. Although the deviation of the radio frequency is minute, it can be detected, and the frequency deviation value due to the Doppler shift is detected (S
2) Do it. The risk rank corresponding to the detected frequency deviation value is selected from the risk rank table stored in the message storage unit 7 in advance (S3), and the frequency deviation value due to the Doppler shift is smaller than a preset threshold value. In the case (S4), the magnitude of the speed is notified to the called party together with the danger message corresponding to the rank by superimposing or interrupting the decoded audible sound signal of the selected rank on the handset 8 (S5). ).

The audible sound signal is an intermittent sound, and the control unit 4 transmits and receives an audible sound signal in which the period of the intermittent sound becomes short and / or the output level becomes high at the same time as the rank of the risk level increases. 8 is superimposed or interrupted (S6).

If the moving speed of the car is high and the frequency deviation value due to the Doppler shift is larger than a preset threshold (S7), the control unit 4 prompts the sender to drive the current car to the sender. Then, a message for notifying the moving speed is selected and transmitted by being superimposed or interrupted on the handset (S8).

When the risk exceeds the threshold and the set time elapses (S9), the call is interrupted or stopped together with the danger message (S10). The setting of the elapsed time is set to about one minute to urge the driver to reduce the vehicle speed.

[0016] Even when a call is made by a traveling driver, the mobile phone of the present invention operates in the same manner as described above when the other party answers the call, so that the description is omitted.

[0017]

According to the present invention, when a call comes in while driving a car, the driver is notified of danger in accordance with the moving speed, and the calling party is also informed that driving is in progress. Since the notification is made and the call is terminated for the high-speed driving, the effect is obtained that the call can be controlled and a safe measure can be taken.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart showing one embodiment of the present invention.

FIG. 3 is a block diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile phone main body 2 Antenna 3 Radio part 4 Control part 5 Doppler shift detection part 6 Display part 7 Message storage part 8 Handset

Claims (5)

(57) [Claims] 1. A mobile phone main body including at least an antenna, a radio unit, a display unit, and a handset, and a detector for detecting a moving speed of the mobile phone main body by a frequency deviation value due to a Doppler shift of a radio wave of a communication partner. A means for notifying the other party and the danger level according to the detected frequency deviation value, a danger level corresponding to the frequency deviation value, and a storage device holding information corresponding to the rank. A mobile phone having a control unit for interrupting or stopping a call when the risk exceeds a preset threshold. 2. The risk notifying means selects a risk rank according to a frequency deviation value detected from the risk rank stored in the storage device,
2. The portable telephone according to claim 1, further comprising means for notifying the decoded audible sound signal of the value of the selected rank by superimposing or interrupting the handset. 3. The risk notifying means selects a risk rank according to a frequency deviation value detected from the risk rank stored in the storage device,
2. The mobile phone according to claim 1, further comprising means for superimposing or interrupting the decoded audible sound signal of the selected rank on the handset and notifying the display by displaying a message corresponding to the rank of risk on the display unit. 4. The audible sound signal is an intermittent sound, and the audible sound signal in which the period of the intermittent sound is short and the output level is high is superimposed or interrupted on the handset every time the rank of the risk level increases. The mobile phone according to any one of claims 1 to 3, further comprising a notification unit. 5. The mobile phone according to claim 1, wherein the control unit for interrupting or stopping the call has a control unit for arbitrarily setting a time until the call is interrupted or stopped.