JP2930226B2 - Cordless telephone - Google Patents

Abstract

PURPOSE:To improve the convenience and the operability by providing a polarity detection means detecting the charging polarity of a charging battery to a mobile station so as switch over to the operating mode depending on an installed location of the mobile station. CONSTITUTION:Power is supplied to a mobile station 5 by a built-in battery and when the mobile station 5 is mounted on an installed location of a base station 2, a battery of the mobile station 5 is automatically charged by a charging section 6. Moreover, an exclusive charger 7 is provided in the mobile station 5 and the battery of the mobile station 5 is charged automatically by mounting the mobile station 5 on the charger 7. Then a polarity detection section of the mobile station 5 detects it that a potential of one terminal is higher than a potential of other terminal and outputs the detected polarity to a control section. When the mobile station 5 is mounted on the base station 2, the polarity of the terminals is opposite to that when the station 5 is set on the charger 7. Thus, even when other person makes operation to reproduce for automatic answering sound recording by the mobile station 5 charged by the charger 7, a sound recording tape recorded in the automatic answering sound recording section of the base station 2 is not reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone comprising a base station connected to a telephone line, and a mobile station performing radio communication with the base station.

[0002]

2. Description of the Related Art FIG. 1 is a block diagram showing a basic electrical configuration of a cordless telephone. The base station 2 connected to the telephone line 1 can perform wireless communication with the mobile station 5 via the antenna 3 and the antenna 4. Therefore, a call can be made between the mobile station 5 and the other party's telephone connected to the telephone line 1.

[0003] The mobile station 5 can freely set an installation place within a range where radio communication with the base station 2 can be performed, and wiring between the base station 2 and the mobile station 5 is unnecessary. is there. Further, the mobile station 5 is provided with a place to be mounted on the base station 2 and can be used as a handset of the base station 2. The mobile station 5 is supplied with power by a built-in rechargeable battery, and when the mobile station 5 is mounted on the above-described mounting location of the base station 2, the battery of the mobile station 5 is automatically charged by the charging unit 6. You.

A dedicated charger 7 is prepared for the mobile station 5, and the battery of the mobile station 5 is automatically charged by installing the mobile station 5 in the charger 7. Therefore, charger 7 can also be used as a mounting table for mobile station 5. Furthermore, a plurality of mobile stations 5 can be installed in the base station 2 and the charger 7 at the same time, and any one of the mobile stations 5 can be selected and used.

[0005]

As described above, the mobile station 5 can be installed in either the base station 2 or the charger 7, in which case the mobile station 5 performs the same function at any installation location. Have. However, when the mobile station 5 is installed in the base station 2, the operation of the mobile station 5 is usually a calling operation, and does not use other functions such as an extension call. Therefore, it is inconvenient that the mobile station 5 has the same function in any place where the base station 2 or the charger 7 is installed. In addition, the base station 2 has, for example, an answering machine recording function. This answering machine recording function instructs the other party to talk to the other party when the other party calls the base station 2 or when the person is away. It is a function to record the contents of the business.

[0006] The recorded contents can be reproduced and heard at the mobile station 5 installed in either the base station 2 or the charger 7. In this case, for example, when the user lends the mobile station 5 installed in the charger 7 to another person, when the other person operates the answering machine playback function, the content recorded in the base station 2 may be heard by another person. is there. In particular, if the recorded content is something that you do not want others to know, it is a serious violation of privacy.

An object of the present invention is to provide a cordless telephone which can switch the operation mode according to the installation location of the mobile station, and which improves convenience and operability.

[0008]

According to the present invention, a base station connected to a telephone line, a mobile station driven by a rechargeable battery and communicating with the base station by radio, and the mobile station are mounted. A cordless telephone including a charger, wherein the base station records first voice means for charging a rechargeable battery of the mobile station with a predetermined polarity, and voice from a call partner of the base station; An answering machine recording and reproducing means for reproducing and transmitting the recorded voice in response to a reproduction control signal, wherein the charger charges the rechargeable battery of the mobile station with a polarity opposite to that of the first charging means. The mobile station includes a polarity detecting means for detecting a polarity of charging of the rechargeable battery, an operation unit for performing an operation for reproduction by an answering machine recording / reproducing means, and a polarity detecting means. The first charging means responds to each output with the Is detected, and when the operation for reproduction is performed by the operation unit, a reproduction control signal is transmitted to the base station, the reproduced sound transmitted from the base station is converted into an acoustic sound, and the polarity of the second charging means is And a reproduction control means for prohibiting reproduction of the answering machine recording / reproducing means when is detected.

[0009]

According to the present invention, the mobile station includes polarity detecting means for detecting the polarity of charging of the rechargeable battery. Therefore,
In the first charging means of the base station and the second charging means of the charger,
Since the polarities for charging are opposite to each other, the mobile station can detect whether the mobile station is mounted on the base station or the charger by its polarity detecting means, and the polarity of the first charging means provided in the base station can be detected. Is detected, and when an operation for reproduction is performed by the operation unit of the mobile station, a reproduction control signal is transmitted to the base station, a reproduction operation is performed, and the reproduction sound is reproduced in the mobile station. Can be. Also, when the polarity of the second charging means of the charger is detected, the reproduction is prohibited, and when the mobile station and the charger are lent to another person, the other person can reproduce and listen to the answering machine recording / reproducing means. It is protected and privacy is protected.

[0010]

FIG. 1 is a block diagram showing a basic electrical configuration of a cordless telephone. The base station 2 connected to the telephone line 1 can perform wireless communication with the mobile station 5 via the antenna 3 and the antenna 4. Therefore, a call can be made between the mobile station 5 and the other party's telephone connected to the telephone line 1.

The mobile station 5 can freely set an installation place within a range where radio communication can be performed with the base station 2. Wiring between the base station 2 and the mobile station 5 can be set. Is unnecessary. Further, the mobile station 5 is provided with a place to be placed on the base station 2 and can be used as a handset of the base station 2. The mobile station 5 is supplied with power by a built-in battery, and when the mobile station 5 is mounted on the above-described mounting location of the base station 2, the battery of the mobile station 5 is automatically charged by the charging unit 6.

Further, a dedicated charger 7 is provided in the mobile station 5, and the battery of the mobile station 5 is automatically charged by mounting the mobile station 5 on the charger 7. Therefore, charger 7 can also be used as a mounting table for mobile station 5. Furthermore, a plurality of mobile stations 5 can be installed in the base station 2 and the charger 7 at the same time, and any one of the mobile stations 5 can be selected and used.

FIG. 2 shows a base station 2 according to an embodiment of the present invention.
FIG. 3 is a block diagram showing an electrical configuration of the mobile station 5.
FIG. 4 is a block diagram showing an electrical configuration of the charger 7.
FIG. 2 is a block diagram showing an electrical configuration of the embodiment. Also, FIG.
6 is a flowchart illustrating the operation of the mobile station 5; FIG.
The transmission operation when the mobile station 5 is being charged by the charger 7 will be described below based on the flowchart of FIG. The process starts at step a1. When the mobile station 5 is being charged by the charger 7, the terminal e of the mobile station 5
And terminal c of charger 7 are connected, and terminal f of mobile station 5 and terminal d of charger 7 are connected. A positive voltage Va is applied to the terminal c of the charger 7 via the resistor Ra,
Is supplied with a potential of 0V. Therefore, the voltage Va is applied to the terminal e of the mobile station 5 via the resistor Ra, and the potential of 0 V is applied to the terminal f.

Therefore, in step a2, the polarity detection unit 10 of the mobile station 5 detects that the potential of the terminal e is higher than the potential of the terminal f, and determines the detected polarity as the control unit 11
Output to The mobile station 5 will be described later.
Is installed in the base station 2, the potential of the terminal e is set to be lower than the potential of the terminal f, that is, the polarity is opposite to that in the case of being installed in the charger 7.

Therefore, the control unit 11 of the mobile station 5 can determine that the mobile station 5 is installed in the charger 7, and proceeds to step a3. The voltage pressurized between the terminals e and f is supplied to the rechargeable battery 15 via the rectifier circuit 12.
And the battery 15 is charged.

Next, in step a3, the mobile station 5 is lifted from the charger 7. At this time, in order to perform the transmission operation in step a4, when the transmission operation is performed by the operation unit 17 in step a5, the control unit 11 detects the operation and outputs a control signal for turning on the hook switch 30 of the base station 2. The signal is modulated by the wireless transmission unit 16 and transmitted from the antenna 4 as a wireless signal. The transmitted control signal is received by the wireless reception unit 31 via the antenna 3 of the base station 2, demodulated by the demodulation circuit 32, and input to the control unit 33. The control unit 33 turns on the hook switch 30 based on the control signal input in step a6, and the telephone line 1 and the communication circuit 35 are connected via the terminals L1 and L2.

Next, in step a7, when a dial number is input from the operation unit 17 of the mobile station 5, the control unit 1
1 converts the dial number into corresponding dial data, and the dial data is input to the control unit 33 of the base station 2 along the same route as the above-described control signal.

The control unit 33 sends out a dial signal from the communication circuit 35 based on the dial data in step a8, and is connected to the other party's telephone in step a9.

Therefore, the voice signal input from the other party's telephone in step a10 is transmitted to the mobile station 5 as a radio signal via the communication circuit 35, the radio transmission unit 36, and the antenna 3 of the base station 2.

Next, the voice signal is input to the radio receiving unit 18 input via the antenna 4 of the mobile station 5 and demodulated, and can be heard as voice from the receiver 20 via the communication circuit 19.

The voice signal input from the transmitter 21 of the mobile station 5 is transmitted as a radio signal from the antenna 4 via the communication circuit 19 and the radio transmitter 16. The voice signal is received and demodulated by the radio receiving unit 31 via the antenna 3 of the base station 2, and the call signal 35, the hook switch 30
Via the telephone line 1.

Therefore, by repeating the above-mentioned operations, a call can be made between the mobile station 5 and the other party's telephone, and the process ends in step all.

The mobile station 5 has a plurality of functions, such as a function of making an extension call with the base station 2, in addition to the above-described calling operation. Therefore, when the mobile station 2 is lifted from the charger 7, the operation for realizing those functions is performed by the operation unit 17 in step a12, so that the control data for realizing those functions as described above. Is input to the control unit 33 of the base station 2, and a corresponding function is realized based on the control data in step a13. For this reason, the hook switch 30 of the base station 2 is turned off except when performing the calling operation, and the communication circuit 35 and the telephone line 1 are not connected.

Next, the transmitting operation when the mobile station 5 is charged in the base station 2 will be described below. When the mobile station 5 is installed in the base station 2 and charged, the terminal e of the mobile station 5 and the terminal b of the charging unit 6 of the base station 2 are connected, and the terminal f of the mobile station 5 and the terminal of the charging unit 6 are connected. The terminal b is connected. A positive voltage Vb is applied to a terminal a of the charging unit 6 via a resistor Rb, and a potential of 0 V is applied to a terminal b. Therefore, a potential of 0 V is applied to the terminal e of the mobile station 5, and the voltage Vb is applied to the terminal f via the resistor Rb.

Therefore, the polarity detector 10 of the mobile station 5
Detects that the potential of the terminal f is higher than the terminal e in step a2, and outputs the detected polarity to the control unit 11. Thereby, the control unit 11 knows that the detected polarity is opposite to the polarity when installed in the charger 7 as described above, and determines that the mobile station 5 is installed in the base station 2. And the process proceeds to Step a14.
The voltage pressurized between the terminals e and f is supplied to the rechargeable battery 15 via the rectifier circuit 12, and the battery 15 is charged.

Next, in step a14, when the mobile station 5 is lifted from the base station 2, an operation for making a call in step a5 is performed by the operation unit 17. In this case, since the mobile station 5 has already detected that the mobile station 5 is installed in the base station 2, the mobile station 5 does not perform any processing other than the transmission operation as described above, so that processing other than the transmission operation cannot be performed. ing. Next, the processing in step a6 and subsequent steps is the same as that described above, and thus will not be described.

When the mobile station 5 is charged in the base station 2 as described above, the mobile station 5 mainly performs a calling operation.
If the mobile station 5 detects that the base station 2 is being charged by the polarity detection unit 10, the mobile station 5 does not accept any other function other than the transmission operation, and thus is easy to use. Therefore, the mobile station 5 can be used as a handset for the base station 2.

Next, the answering machine recording / reproducing function of the cordless telephone will be described below with reference to the flowchart of FIG. The process is started in step b1. In step b2, an operation for reproducing the answering machine recording is performed from the operation unit 17 of the mobile station 5, and the reproduction control signal is input to the control unit 11. Next, in step b3, when the polarity detection unit 10 of the mobile station 5 detects the polarity of the charging, the control unit 11 determines the polarity, and determines that the mobile station 5 is being charged by the base station 2. The process proceeds to step b4.

Here, the answering machine recording means that when a call is received from the other party to the base station 2, the absence is automatically notified to the other party by voice, and the other party is instructed to talk to the other party. This function records the contents on a recording tape.

In step b4, when a playback control signal for answering machine recording and playback is input to the control unit 11, the playback control signal is transmitted to the antenna 3 of the base station 2 via the radio transmission unit 16 of the mobile station 5 and the antenna 4. Sent to. The base station 2 receives the reproduction control signal in the radio receiving unit 31 via the antenna 3, demodulates it in the demodulation circuit 32, and
Output to The control unit 33 plays back the recording tape recorded by the answering machine recording / playback unit 40 based on the input playback control signal. The reproduced audio signal is transmitted to the mobile station 5 via the communication circuit 35, the wireless transmission unit 36, and the antenna 3. Next, the voice signal is received by the radio receiving unit 18 via the antenna 4 of the mobile station 5, and the speech circuit 1
9 through the receiver 20 as voice.

In step b3, the polarity detector 10 of the mobile station 5 detects the polarity of charging, and the controller 11
If it is determined that the mobile station 5 is being charged by the charger 7 by determining its polarity, the process proceeds to step b5.

In step b5, the control section 11 performs a process for prohibiting the reproduction of the answering machine recording, and does not perform the recording of the answering machine recorded recording tape. That is, when the mobile station 5 is charged by the charger 7, the answering machine recording is not reproduced. Next, the process ends in step b6.

Therefore, for example, when lending the mobile station 5 charged in the charger 7 to another person, even if the other person performs an operation for reproducing the answering machine recording in the mobile station 5, the answering machine recording of the base station 2 is performed. The recording tape recorded in the unit 40 is not reproduced. As a result, the contents recorded in the answering machine recording unit 40 of the base station 2 are not heard by the other person who rents the mobile station 5, and the privacy of the person who lent the mobile station 5 can be protected.

In this embodiment, the reproduction of the answering machine recording has been described. However, the cordless telephone has various other functions such as message recording and response recording. In these functions as well, the operation content may be switched according to which of the base station 2 and the charger 7 the mobile station 5 is charged. Further, a plurality of sets of the mobile station 5 and the charger 7 may be provided.

[0035]

[0036]

As described above, according to the present invention, the mobile station has polarity detecting means for detecting the polarity of charging, and the first charging means of the base station and the second charging means of the charger have polarities. Since they are different, the mobile station can detect whether the mobile station is mounted on the base station or the charger. Thereby, the rechargeable battery of the mobile station is charged by the first charging means of the base station,
When an operation for reproduction is performed by the operation unit of the mobile station, a reproduction operation of the answering machine recording / reproduction means of the base station is performed,
At the mobile station, the reproduced sound can be converted to sound and heard. Moreover, when the rechargeable battery of the mobile station is being charged by the second charging means of the charger, reproduction of the answering machine recording / reproducing means is prohibited, regardless of the operation for reproduction by the operation unit, and privacy is protected. You. Thus, a cordless telephone with improved convenience and operability can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic electrical configuration of a cordless telephone.

FIG. 2 is a block diagram showing an electrical configuration of a base station 2 according to one embodiment of the present invention.

FIG. 3 is a block diagram showing an electrical configuration of a mobile station 5 according to one embodiment of the present invention.

FIG. 4 is a block diagram showing an electrical configuration of the charger 7;

FIG. 5 is a flowchart showing processing contents such as a calling operation of the mobile station 5;

FIG. 6 is a flowchart showing processing contents of answering machine recording / playback of the mobile station 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone line 2 Base station 3, 4 Antenna 5 Mobile station 6 Charging part 7 Charger 10 Polarity detecting part 11, 33 Control part 12 Rectifier 15 Rechargeable battery 16, 36 Radio transmission part 17, 37 Operation part 18 Radio reception part 19 , 35 communication circuit 20, 39 receiver 21, 38 transmitter 30 hook switch 31 wireless receiver 32 demodulation circuit 40 answering machine recorder

Claims (1)

(57) [Claims] 1. A cordless telephone comprising: a base station connected to a telephone line; a mobile station driven by a rechargeable battery and performing wireless communication with the base station; and a charger on which the mobile station is mounted. The base station charges the rechargeable battery of the mobile station with a predetermined polarity;
Record the charging means and the voice from the other party who calls the base station,
An answering machine recording / reproducing means for reproducing and transmitting the recorded voice in response to a reproduction control signal, wherein the charger charges the rechargeable battery of the mobile station with a polarity opposite to that of the first charging means. The mobile station comprises: a polarity detection means for detecting the polarity of charging of the rechargeable battery; an operation unit for performing an operation for reproduction by the answering machine recording / reproduction means; and a polarity detection means. In response to each output from the unit, the polarity of the first charging means is detected, and when the operation for reproduction is performed by the operation unit, a reproduction control signal is transmitted to the base station, and transmitted from the base station. And a playback control means for inhibiting playback of the answering machine recording / playback means when the polarity of the second charging means is detected.