JP2002209261A - Cordless phone and its control method, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cordless phone that can discriminate whether or not a slave unit is at the outside of the zone even in a waiting state and allow a master unit to grasp the distance from the slave unit and to provide its control method and a storage medium. SOLUTION: A CPU 25 in a waiting state allows a buzzer 30 to raise a warning tone I on the basis of a discrimination signal denoting that a radio wave level of a distance measurement radio wave sent from a master unit 1 is smaller than a set optional radio wave level, transmits the control signal to the master unit 1 on the basis of the discrimination signal, a CPU 7 allows a buzzer 14 to raise the warning tone I on the basis of the control signal sent from a slave unit 17, the CPU 25 allows the buzzer 30 to raise a warning tone II on the basis of the discrimination signal denoting that the radio wave level of the distance measurement radio wave sent from the master unit 1 is smaller than a prescribed radio wave level in a busy state, transmits the control signal to the master unit 1 on the basis of the discrimination signal and the CPU 7 allows the buzzer 14 to raise the warning tone II on the basis of the control signal sent from the slave unit 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone device, a control method thereof, and a storage medium, and more particularly, to a cordless telephone device capable of carrying a slave unit, a control method thereof, and a storage medium.

[0002]

2. Description of the Related Art A cordless telephone having a master unit and a slave unit has been known. As a mode of installation of this cordless telephone device, the base unit is installed in a room where families gather, such as a living room at home, while the slave unit is usually installed in a fixed place together with a charger, and is held according to the convenience of the user. The form of being carried has become common. In recent years, the size of the slave unit has been reduced to a size comparable to that of a PHS (registered trademark) terminal.
Since the communication range of the handset has been expanded to be comparable to that of PHS (registered trademark), the range in which the handset can be carried is increasing.

[0003] In such a situation, the slave unit is often carried out of the communication area, so that when a user uses the slave unit to make a call, the radio wave of the slave unit may be lost. The level discriminating means determines whether or not the mobile phone has gone out of the communication area based on the radio wave level of a distance measuring radio wave (hereinafter referred to as "distance measuring radio wave") in which the radio wave level is weakened in proportion to the distance from the master unit to the slave unit. In general, when the user is out of the communication area, the radio wave level discriminating means makes a buzzer or the like sound a warning sound to inform the user that the user is out of the communication area.

[0004]

However, in the conventional cordless telephone device, when the mobile phone is on standby, only the signal receiving means of the slave unit is turned on, and the electric wave level discriminating means of the slave unit is not powered. Is not included,
The radio level determination means of the slave unit cannot determine whether or not the slave unit has gone out of the communication area, and the master unit can grasp the distance between the slave unit and the installation location of the master unit carried by the user. Can not.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cordless telephone capable of determining whether or not a handset is out of a communication area even when the mobile phone is on standby, and allowing the base unit to know the distance to the handset. An object of the present invention is to provide an apparatus, a control method thereof, and a storage medium.

[0006]

To achieve the above object, a cordless telephone device according to claim 1, wherein the cordless telephone device comprises a parent device and a child device. Transmitting device for transmitting a distance measurement radio wave, the slave unit includes a reception level setting device for setting a reception level, and whether the radio wave level of the transmitted distance measurement radio wave is lower than the set reception level. A radio wave level discriminating unit for discriminating whether the radio wave is transmitted, and an alarm generating unit for generating an alarm when the radio wave level of the transmitted distance measuring radio wave is smaller than the set reception level.

According to a second aspect of the present invention, in the cordless telephone apparatus according to the first aspect, the base unit operates when the level of the transmitted distance measuring radio wave is lower than the set reception level. And another alarm generating means for generating an alarm.

According to a third aspect of the present invention, in the cordless telephone apparatus according to the second aspect, the alarms generated by the alarm generating means and the other alarm generating means are different between a standby state and a telephone call. Features.

A cordless telephone according to a fourth aspect of the present invention is the cordless telephone according to the second or third aspect, wherein the alarms generated by the alarm generating means and the other alarm generating means are audible sounds. .

In order to achieve the above object, a control method of a cordless telephone device according to a fifth aspect of the present invention is a control method of a cordless telephone device having a master unit and a slave unit, wherein the master unit is connected to the base unit when the mobile unit is on standby. A transmitting step of transmitting a distance measurement radio wave to the slave unit, a reception level setting step of setting a reception level, and determining whether a radio wave level of the transmitted distance measurement radio wave is smaller than the set reception level. And a warning generating step in which the slave unit generates a warning when a radio wave level of the transmitted distance measuring radio wave is smaller than the set reception level.

According to a sixth aspect of the present invention, in the control method of the cordless telephone apparatus according to the fifth aspect, when the radio wave level of the transmitted distance measuring radio wave is smaller than the set reception level. Preferably, the master unit has another alarm generating step of generating an alarm.

According to a seventh aspect of the present invention, in the control method of the cordless telephone apparatus according to the sixth aspect, the alarms generated in the alarm generating step and the other alarm generating step are awaiting. It is different from that during a call.

According to an eighth aspect of the present invention, in the control method of the cordless telephone apparatus according to the sixth or seventh aspect, the alarms generated in the alarm generation step and the other alarm generation step are audible sounds. It is characterized by being.

In order to achieve the above object, a storage medium according to a ninth aspect is a readable storage medium storing a program for executing a control method of a cordless telephone device having a master unit and a slave unit, The program includes a transmitting module for transmitting the distance measurement radio wave from the master unit to the slave unit while waiting, a reception level setting module for setting a reception level, and a radio wave level of the transmitted distance measurement radio wave. A radio wave level determination module that determines whether or not is smaller than the set reception level, and when the radio wave level of the transmitted distance measurement radio wave is smaller than the set reception level, the slave unit issues an alarm. And an alarm generation module that generates an alarm.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cordless telephone according to an embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram of a cordless telephone device according to an embodiment of the present invention.

In FIG. 1, the cordless telephone device includes a master unit 1 and a slave unit 17.

The base unit 1 includes a wireless interface 2 (transmitting means), a voice receiving unit 3, a signal receiving unit 4, a receiving amplifier 5,
Receiver 6, CPU 7, transmitter 8, transmitter amplifier 9, signal transmitter 10, voice transmitter 11, line signal transmitter / receiver 12, line interface 13, buzzer 14 (other alarm generating means), 10 key 15, and telephone line It is constituted by 15 components of the line 16 composed of L1 and L2.

In the base unit 1, the receiver 6 is connected to the receiver amplifier 5
The voice transmitter 8 is connected to the radio interface 2 via the transmission amplifier 9 and the voice transmission unit 11, and the CPU 7 is connected to the radio interface 2 via the signal reception unit 4. 2 and the wireless interface 2 through the signal transmission unit 10.
Connected to the audio receiving unit 3 and the buzzer 14
, And 10key 15 are connected to the CPU 7, and the line signal transmitting / receiving unit 12 includes the voice receiving unit 3, the CPU 7, and the voice transmitting unit 1.
1 and the line interface unit 13 is connected to the line signal transmitting / receiving unit 12 and to a public network (not shown) via the line 16 (FIG. 1A).

On the other hand, the slave unit 17 includes a radio interface 18, a voice receiving unit 19, a signal receiving unit 20, a radio wave level varying unit 21 (reception level setting means), and a radio wave level discriminating unit 2.
2 (radio wave level determining means), receiving amplifier 23, receiver 2
4, CPU 25, transmitter 26, transmission amplifier 27, signal transmission unit 28, voice transmission unit 29, buzzer 30 (alarm generation means), and 14 components of 10 key 31.

In the slave unit 17, the receiver 24 is connected to the wireless interface 18 via the receiving amplifier 23 and the voice receiving unit 19, and the transmitter 26 is connected to the wireless interface 18 via the transmitting amplifier 27 and the voice transmitting unit 29. The CPU 25 is connected to the wireless interface 18 via the signal receiving unit 20, is also connected to the wireless interface 18 via the radio wave level varying unit 21, and is further connected to the wireless interface 18 via the radio wave level determining unit 22.
Connected to the audio receiving unit 19 and connected to the signal transmitting unit 28, and the buzzers 30 and 10key 31
Connected to PU25. The signal receiving unit 20, the radio wave level varying unit 21, and the radio wave level discriminating unit 22 are connected to each other (FIG. 1B).

In the base unit 1, the radio interface 2 transmits and receives voice radio waves and control radio waves to and from the radio interface 18 of the handset 17, transmits radio waves for distance measurement, and the voice reception unit 3 The received audio wave is demodulated into an audio signal, the receiving amplifier 5 amplifies the demodulated audio signal, and the receiver 6 converts the amplified audio signal into audible sound and generates the audible sound. The signal receiving unit 4 demodulates the received control radio wave into a control signal, and transmits the demodulated control signal to the CPU 7.

The CPU 7 generates a distance discriminating signal at regular intervals during a call and a call, and generates a ringing sound or a warning sound on the buzzer 14 based on a control signal from the signal receiving unit 4. When the 10 key 15 detects an input from the user, the wireless interface 2
The operation of each component of the parent device 1 is controlled, for example, by making a call to the child device 17.

The transmitter 8 converts the user's voice into a voice signal, the transmitter amplifier 9 amplifies the converted voice signal, and the voice transmitter 11 transmits the voice signal from the transmitter amplifier 9 or the line signal transmitter / receiver 12. The audio signal is modulated into a radio wave and transmitted to the radio interface 2. The signal transmission unit 10 modulates the distance determination signal from the CPU 7 into a radio wave for distance measurement and transmits the radio wave to the radio interface 2.

The line interface unit 13 transmits and receives signals to and from the public network via the line 16 and
Converts the control signal from the CPU 7 from digital to analog, converts the signal from the line interface unit 13 from analog to digital, and converts the audio signal from the audio receiving unit 3 from analog to digital.

Base unit 1 transmits a radio wave for distance measurement to handset 17 even during standby based on the above configuration.

In the slave unit 17, the radio interface 18 transmits and receives a radio wave and a control radio wave to and from the radio interface 2 of the base unit 1, receives a distance measurement radio wave, and the voice reception unit 19 receives the radio wave. The audio wave is demodulated into an audio signal, the receiving amplifier 23 amplifies the demodulated audio signal, and the receiver 24 converts the amplified audio signal into audible sound and generates the audible sound.

The signal receiving section 20 demodulates the received control radio wave into a control signal, transmits the demodulated control signal to the CPU 25 and the like, and the radio wave level varying section 21 changes the radio wave level based on the user's input and the like. The radio wave level is set to an arbitrary radio wave level within a range of 30 to 40 dB, and the set radio wave level is transmitted to the radio wave level discrimination unit 22 and the like.
Reference numeral 2 indicates whether the radio wave level of the received distance measurement radio wave is lower than a predetermined radio wave level (30 dB in S / N ratio) or lower than an arbitrary radio wave level that has been set. Is transmitted to the CPU 25 or the like as a determination signal.

The CPU 25 generates a control signal to be transmitted to the base unit 1 based on the discrimination signal from the radio wave level discriminating section 22, and based on the discrimination signal from the radio wave level discriminating section 22 or the control signal from the signal receiving section 20. When the buzzer 30 generates a ringing sound or a warning sound, or when the 10 key 31 detects an input from the user, the wireless interface 1
The operation of each component of the slave unit 17 is controlled, for example, by making the master unit 8 call the master unit 1.

A transmitter 26 converts the user's voice into a voice signal, and a transmitter amplifier 27 amplifies the converted voice signal.
The voice transmitting unit 29 modulates the voice signal from the transmission amplifier 27 into a voice radio wave and transmits it to the wireless interface 18, and the signal transmitting unit 28 modulates the control signal from the CPU 25 into a control radio wave and transmits it to the radio interface 18. .

It is assumed that the radio interface 18, the radio wave level varying unit 21, and the radio wave level discriminating unit 22 are turned on even when the mobile phone is in standby mode.

The slave unit 17 transmits a control radio wave to the master unit 1 based on the above configuration.

Hereinafter, a warning sound generation process executed by the cordless telephone device according to the embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a flowchart of a warning sound generation process executed by the cordless telephone device according to the embodiment of the present invention.

First, a user or the like sets the radio wave level by the radio wave level varying section 21 to an arbitrary S / N ratio between 30 and 40 dB. At this time, the radio wave level determination unit 2
Since the determination limit S / N ratio of No. 2 is 30 dB, the lower limit of the settable range of AdB is 30 dB.

Thereafter, when the mobile device is in a standby state and is being carried by a user or the like, the wireless interface 18 of the slave device 17 transmits the distance measuring radio wave transmitted from the wireless interface 2 of the master device 1 at regular intervals. The received distance measurement radio wave is transmitted to the radio wave level discrimination unit 22 and the radio wave level discrimination unit 22 determines whether or not the radio wave level of the transmitted distance measurement radio wave is lower than AdB (step S201). .

If the result of determination in step S201 is that the radio wave level of the transmitted distance measuring radio wave is lower than AdB, a discrimination signal indicating this is transmitted to the CPU 25, and
U25 generates a warning sound I in buzzer 30 based on the transmitted discrimination signal, generates a control signal, and transmits the control signal to signal transmission unit 28. The signal transmission unit 28
The control signal transmitted from U25 is modulated into a control radio wave and transmitted to the radio interface 18, and the radio interface 18 transmits the transmitted control radio wave to the radio interface 2 of the base unit 1. Wireless interface 2 of master unit 1
Receives the transmitted control radio wave and transmits the received control radio wave to the signal receiving unit 4. The signal receiving unit 4 demodulates the transmitted control radio wave into a control signal and converts the demodulated control signal into a CP.
U7, and the CPU 7 causes the buzzer 14 to generate a warning sound I based on the transmitted control signal (step S20).
2).

If the result of the determination in step S201 is that the radio wave level of the transmitted distance measuring radio wave is equal to or higher than AdB,
It is determined whether or not the mobile phone is waiting (step S203).

As a result of the determination in step S203, when the mobile terminal is in the standby state, the process returns to step S201. When the mobile terminal is not in the standby state, the slave unit 17 makes a call or is called by the master unit 1 (step S204). 1 and a call channel is established, and a transition is made to a call (step S205). The calling operation and the called operation at this time are the same as the operations of the conventional cordless telephone device, and thus the description is omitted.

Next, the wireless interface 18 of the slave unit 17 receives the distance measurement radio wave transmitted from the radio interface 2 of the base unit 1 at regular intervals, and transmits the received distance measurement radio wave to the radio wave level determination unit 22. Then, the radio wave level determination unit 22 determines whether or not the radio wave level of the transmitted distance measurement radio wave is lower than a predetermined radio wave level (30 dB in S / N ratio) (step S206).

As a result of the discrimination in step S206, when the radio wave level of the transmitted distance measuring radio wave is lower than the predetermined radio wave level, a discrimination signal indicating this is transmitted to the CPU 25, and the CPU 25 transmits the discrimination signal to the transmitted discrimination signal. Based on this, the buzzer 30 generates a warning sound II, generates a control signal, and transmits the control signal to the signal transmission unit 28. The signal transmitting unit 28 modulates the control signal transmitted from the CPU 25 into a control radio wave and transmits the control radio wave to the wireless interface 18, and the wireless interface 18 transmits the transmitted control radio wave to the wireless interface 2 of the base unit 1. The wireless interface 2 of the base unit 1 receives the transmitted control radio wave and transmits the received control radio wave to the signal receiving unit 4. The signal receiving section 4 demodulates the transmitted control radio wave into a control signal and transmits the demodulated control signal to the CPU 7, and the CPU 7 causes the buzzer 14 to generate a warning sound II based on the transmitted control signal (step S207). ).

If the result of determination in step S206 is that the radio wave level of the transmitted distance measuring radio wave is equal to or higher than a predetermined radio wave level, CPU 25 determines whether or not the call has been completed (step S208).

If the result of determination in step S208 is that the call has not ended, the flow returns to step S205, and if the call has ended, this processing ends.

According to the process shown in FIG. 2, when waiting, the CPU 25 sets an arbitrary radio wave level (S / N) to which the radio wave level of the distance measuring radio wave transmitted from the base unit 1 is set.
Based on the discrimination signal indicating that the ratio is smaller than AdB),
The buzzer 30 generates a warning sound I and transmits a control signal to the base unit 1 based on the discrimination signal, and the CPU 7 issues a warning sound I to the buzzer 14 based on the control signal transmitted from the handset 17.
While a call is in progress, the CPU 25
Causes the buzzer 30 to generate a warning sound II based on a determination signal indicating that the radio wave level of the distance measurement radio wave transmitted from the base unit 1 is lower than a predetermined radio wave level (S / N ratio: 30 dB); The control signal is transmitted to the base unit 1 based on the discrimination signal, and the CPU 7 generates a warning sound II on the buzzer 14 based on the control signal transmitted from the sub unit 17, so that the sub unit 17 Can be determined as to whether or not is out of the communication area, and master device 1 can grasp the distance from slave device 17. As a result, it is possible to prevent the user of the slave unit 17 from carrying the slave unit out of the communication area. Also, as a secondary effect, the child unit 1
7 so that any set radio wave level (S
It can also be prevented from moving farther than the distance corresponding to A / D / N ratio).

In the cordless telephone according to the above-described embodiment of the present invention, a case has been described where the alarms generated by each of base unit 1 and handset 17 are warning sounds, but these warnings are visible. For example, the backlight of a liquid crystal screen (not shown) or a lamp (not shown) of each of the parent device 1 and the child device 17 may be blinked.

Instead of the CPU 7 and the CPU 25 storing the program for executing the processing of FIG. 2 described above, an arbitrary storage medium storing the program for executing the processing of FIG. A program for executing the processing of FIG. 2 may be supplied to the cordless telephone device according to the embodiment, and the CPU 7 and the CPU 25 may execute the program for executing the processing of FIG. As a storage medium for supplying a program for executing the processing of FIG. 2, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, M
O, magnetic tape, non-volatile memory card, or R
OM and the like.

Further, instead of the CPU 7 and the CPU 25, a circuit (not shown) that operates in the same manner as the above may realize the above-described embodiment.

A program for executing the processing of FIG. 2 supplied by the storage medium is inserted into the master unit 1 and / or the slave unit 17, or a function expansion board (not shown) or the master unit 1.
After being written into a memory (not shown) provided in a function expansion unit (not shown) connected to the slave unit 17 or one of them, the CPU or the like (not shown) provided in the function expansion board or the function expansion unit shown in FIG. Part or all of the program that executes the processing may be executed.

[0049]

As described above in detail, according to the cordless telephone device according to the first aspect, the control method of the cordless telephone device according to the fifth aspect, and the storage medium according to the ninth aspect, when the apparatus is in a standby state, The base unit transmits the distance measurement radio wave to the slave unit, determines whether the radio wave level of the transmitted distance measurement radio wave is lower than the set reception level, and determines the radio wave level of the transmitted distance measurement radio wave. Is smaller than the set reception level, the slave unit issues an alarm, so that it is possible to determine whether or not the slave unit has gone out of the communication area even during standby, and as a result, It is possible to prevent the user from carrying the child device out of the call area.

According to the cordless telephone device of the second aspect and the cordless telephone device of the sixth aspect, when the radio wave level of the transmitted distance measuring radio wave is smaller than the set reception level, the master unit issues an alarm. Since this occurs, the master unit can grasp the distance to the slave unit.

According to the cordless telephone device according to the third aspect and the cordless telephone device according to the seventh aspect, the alarms generated by the slave unit and the base unit are different between during standby and during a call. When carrying, you can easily know whether you are waiting or talking.

According to the cordless telephone device according to the fourth aspect and the cordless telephone device according to the eighth aspect, the alarm generated by the slave unit and the master unit is an audible sound. It is possible to easily know whether or not the user is out of the call area.

[Brief description of the drawings]

FIG. 1 is a block diagram of a cordless telephone device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a warning sound generation process executed by the cordless telephone device according to the embodiment of the present invention.

[Explanation of symbols]

 1 Base Unit 2,18 Wireless Interface 3,19 Voice Receiving Unit 4,20 Signal Receiving Unit 5,23 Receiving Amplifier 6,24 Receiving Unit 7,25 CPU 8,26 Transmitter 9,27 Transmitting Amplifier 10,28 Signal Transmission Unit 11, 29 Voice transmission unit 12 Line signal transmission / reception unit 13 Line interface unit 14, 30 Buzzer 15, 31 10key 16 Line 17 Remote unit 21 Radio wave level variable unit 22 Radio wave level discrimination unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Atsushi Otani 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Tokuo Sugiyama 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon (72) Inventor Makoto Kobayashi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Yoshiaki Suzuki 3-30-2, Shimomaruko 3-chome, Ota-ku, Tokyo Canon Inc. ( 72) Inventor Naohiro Iwata 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Teruyuki Nishii 3-30-2 Shimomaruko 3-chome, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Naoya Watanabe 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Susumu Matsuzaki 3-30-2 Shimomaruko, Ota-ku, Tokyo F term in Canon Inc. (reference) 5K027 AA12 BB01 EE01 5K067 AA01 BB08 DD20 DD43 DD44 EE02 EE10 EE22 FF03 FF17 FF20 FF27 FF31 GG01 GG11 HH22 HH23 JJ54 KK15 LL13

Claims (9)

[Claims] 1. A cordless telephone device including a master unit and a slave unit, wherein the master unit includes transmission means for transmitting a radio wave for distance measurement to the slave unit when the master unit is in a standby state. Reception level setting means for setting a level; radio wave level determination means for determining whether or not the radio wave level of the transmitted distance measurement radio wave is smaller than the set reception level; and the transmitted distance measurement radio wave And a warning generating means for generating a warning when the radio wave level of the telephone is lower than the set reception level. 2. The apparatus according to claim 1, wherein the master unit further includes another alarm generation unit that generates an alarm when a radio wave level of the transmitted distance measurement radio wave is lower than the set reception level. Item 2. The cordless telephone device according to item 1. 3. The cordless telephone device according to claim 2, wherein the alarms generated by said alarm generation means and said other alarm generation means are different between a standby state and a call state. 4. The cordless telephone device according to claim 2, wherein an alarm generated by said alarm generating means and said another alarm generating means is an audible sound. 5. A control method for a cordless telephone device including a master unit and a slave unit, wherein the master unit transmits a distance measurement radio wave to the slave unit during standby, and sets a reception level. A reception level setting step, a radio wave level determination step of determining whether or not the radio wave level of the transmitted distance measurement radio wave is smaller than the set reception level, and a radio wave level of the transmitted distance measurement radio wave An alarm generating step of causing the slave to generate an alarm when the reception level is lower than the set reception level. 6. The method according to claim 1, further comprising the step of generating an alarm when the base unit generates an alarm when a radio wave level of the transmitted radio wave for distance measurement is lower than the set reception level. 6. The method for controlling a cordless telephone device according to claim 5. 7. The control method for a cordless telephone device according to claim 6, wherein alarms generated in said alarm generation step and said another alarm generation step are different between a standby state and a call state. 8. The method according to claim 6, wherein the alarms generated in the alarm generation step and the another alarm generation step are audible sounds. 9. A readable storage medium storing a program for executing a control method of a cordless telephone device including a master unit and a slave unit, wherein the program stores the program when the master unit is in a standby state. A transmission module for transmitting a distance measurement radio wave to the device, a reception level setting module for setting a reception level, and determining whether a radio wave level of the transmitted distance measurement radio wave is smaller than the set reception level. A storage medium comprising: a radio wave level discrimination module; and an alarm generation module that generates an alarm when the radio wave level of the transmitted distance measurement radio wave is smaller than the set reception level. .