JP2005072796A - Telephone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To grasp the placement relationship between a master and a radio slave without making complex the configuration of the master and the radio slave. <P>SOLUTION: When a charge control means 39A (49A) supplies a charge signal from the master 30 to the radio slave 40, it limits the supply of the charge signal, based on the amount of control inherent to the master 30 or the radio slave 40. A measurement means 49B (39B) measures the amount of control from a charge signal, where the supply is limited by the charge control means, and a decision means 15A decides the placement relationship between the master and the radio slave, based on the amount of control measured by the measuring means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a telephone system, and in particular, includes a main unit connected to a telephone line and a plurality of extension telephones connected to the main unit, and uses a radio telephone composed of a master unit and a radio slave unit as the extension phone. It relates to the telephone system.

In a telephone system composed of a main unit connected to a telephone line and a plurality of extension telephones connected to the main unit, a radio telephone may be used as the extension telephone.
This wireless telephone is composed of a parent device and a wireless child device that make a pair, of which the parent device is connected to the main unit, and the wireless child device is connected to the parent device via a wireless line. This type of wireless telephone is called a curled cordless type cordless telephone because there is no curled cord for connecting the handset to the telephone body as compared with a general extension telephone. Usually, a base unit and a wireless slave unit belonging to the same wireless telephone perform wireless communication using the same preset identification information, that is, a system ID, thereby causing interference with the base unit and the wireless slave unit of another wireless telephone. It is the composition which avoids.

In such a telephone system in which a wireless telephone is connected as an extension telephone, the wireless handset of each wireless telephone can be freely carried, and may be erroneously placed on a base unit belonging to another wireless telephone.
In the case of misplacement, the master unit and the wireless slave unit belong to different wireless telephones, so the control of the master unit and the wireless slave unit by the main unit is not linked, and the user is confused. There is. For example, when it is normally placed, if it is picked up by the wireless slave unit from the master unit according to the incoming call display on the master unit, it is regarded as a response operation on the wireless telephone and the wireless slave unit automatically answers the incoming call it can. However, if it is misplaced, even if the wireless slave is picked up, it is regarded as an off-hook in another wireless telephone, and the wireless slave cannot automatically answer the incoming call.

Conventionally, as a method for detecting the mounting state of a wireless slave device relative to the master device, a system ID is obtained by performing wired communication and wireless communication between the master device and the wireless slave device placed on the master device. There has been proposed a method for detecting normal placement by using (see, for example, Patent Document 1).
As shown in FIG. 8, when the wireless slave unit is placed on the master unit and charging is started (step 300), the system ID is transmitted from the master unit to the wireless slave unit by wire communication (step 300). 301) The wireless slave unit compares the system ID from the master unit with the system ID of the wireless slave unit (step 302).

If the two system IDs match (step 302: YES), an ID confirmation indicating that the ID matches can be confirmed by wireless communication from the wireless slave unit to the master unit (step 303).
This confirms that the system ID matches with the wireless slave device placed on the parent device (step 304), and the wireless slave device is normally placed on the original master device. Can be confirmed. Further, when the ID confirmation is not notified from the wireless slave device, it can be determined that the wireless slave device is erroneously placed.
Therefore, by applying such a placement detection method to a radio telephone of a telephone system and notifying the main unit of the detection result of the base unit, the main unit can grasp the erroneous placement state of the wireless slave unit. it can.

The applicant has not yet found prior art documents related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in this specification.
JP 2001-038773 A

However, in such a conventional telephone system, there is a problem that the configuration of the master unit and the wireless slave unit becomes complicated when the above-described wireless slave unit placement detection method is adopted.
For example, in the wireless slave device placement detection method as described above, the system ID and the ID confirmation notification are exchanged by performing serial data communication between the master device and the wireless slave device placed on the master device. Thus, the coincidence of both system IDs is confirmed, and serial data communication is required for exchanging these pieces of information between the two.

At this time, if the wireless slave unit is misplaced and the system IDs of the two are different, wireless communication cannot be used. Serial data communication is performed using a terminal or multiplexed with a charging power source. Therefore, a circuit configuration for performing wired serial data communication separately from the charging control circuit is required for the master unit and the wireless slave unit, and the configuration of the wireless telephone becomes complicated.
The present invention is for solving such problems, and provides a telephone system that can grasp the placement relationship between a master unit and a wireless slave unit without complicating the configurations of the master unit and the wireless slave unit. It is an object.

  In order to achieve such an object, a telephone system according to the present invention includes a main apparatus connected to a telephone line and a plurality of extension telephones connected to the main apparatus. Consists of a pair of connected master unit and a wireless slave unit connected to the master unit via a wireless line, and is electrically connected when the wireless slave unit is placed at the placement location provided in the master unit In a telephone system using a wireless telephone to which a charging signal for charging a battery of the wireless slave unit is supplied from the master unit to the wireless slave unit via the charging terminal of the master unit and the wireless slave unit, When supplying a charging signal from the parent device to the wireless slave device, charging control means for restricting supply of the charging signal based on a control amount unique to the parent device or the wireless slave device, and supply restriction by the charging control means That measures the controlled variable from the charged signal Means and are those comprising a determination means for determining placement relationship between the master machine and the radio personal station based on the control amount measured by the measuring means.

  At this time, as the control amount, the charging signal interruption time, the number of interruptions, or the interruption interval is used, and the charging control means supplies the charging signal as a restriction on the interruption time, the number of interruptions specific to the parent device or the wireless slave device Alternatively, the supply of the charging signal may be interrupted based on the interruption interval, and the control unit may measure the control amount based on the interruption time of the charging signal, the number of interruptions, or the interruption interval.

  Alternatively, the current value or voltage value of the charge signal is used as the control amount, and the charge signal is controlled so that the charge control means has a current value or voltage value specific to the parent device or the wireless child device as a supply restriction for the charge signal. The control amount may be measured based on the current value or voltage value of the charging signal by the measuring means.

  In addition, the charging control means is provided in the parent device, the charging signal supplied to the wireless slave device is controlled based on the control amount unique to the parent device, and the measuring means is provided in the wireless slave device and supplied from the parent device. The control amount is measured from the charging signal, and the determination unit is provided in the main device, the master unit or the wireless slave unit, and the placement relationship between the master unit corresponding to the control amount measured by the measurement unit and the wireless slave unit is determined. You may make it determine.

  Alternatively, the charging control means is provided in the wireless slave unit, the charging signal supplied from the master unit is controlled based on the control amount unique to the wireless slave unit, and the measuring means is provided in the master unit and controlled by the wireless slave unit. The control amount is measured from the charged signal, the determination unit is provided in the main device or the parent device, and the placement relationship is determined from the wireless slave device corresponding to the control amount measured by the measurement unit and the parent device. It may be.

In the present invention, when the charging signal is supplied from the parent device to the wireless slave device by the charging control means, the supply of the charging signal is limited based on a control amount specific to the parent device or the wireless slave device, and this charging is performed. The control unit measures the control amount from the charging signal that is restricted by the control unit, and the determination unit determines the placement relationship between the master unit and the wireless slave unit based on the control amount measured by the measurement unit. Therefore, it is not necessary to provide a circuit configuration for serial data communication of the system ID between the master unit and the wireless slave unit via a wired connection separately from the charge control circuit as in the prior art.
Therefore, it is possible to grasp the placement relationship between the master unit and the wireless slave unit without complicating the configuration of the master unit and the wireless slave unit as compared with the prior art, and call control for the base unit and the wireless slave unit in the placed state. In this case, it is possible to perform call control reflecting the placement relationship between the two.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a telephone system according to an embodiment of the present invention.
This telephone system is composed of a main apparatus 10 connected to one or more telephone lines 11 from the network and a plurality of radio telephones 20A, 20B to 20N accommodated in the main apparatus 10. The device 10 exchanges and connects calls such as voice calls and data communications between the telephone line 11 and any of the radio telephones 20A, 20B to 20N.

The radio telephone 20A is composed of a pair of a master unit 30A connected to the main unit 10 via the extension transmission line 17, and a handset type radio slave unit 40A connected to the master unit 30A via a radio line. ing. The base unit 30A is provided with a charging stand, that is, a mounting place on which the wireless slave unit 40A is placed for charging. Normally, when not in use, the wireless slave unit is placed on the base unit. Is done.
In the wireless telephone 20A, wireless communication is performed between the parent device 30A and the wireless slave device 40A using a system ID unique to the wireless telephone 20A set in advance. The configuration of the radio telephones 20B to 20N is the same as that of the radio telephone 20A, and is composed of a pair of a master unit 30B to 30N and a radio slave unit 40B to 40N, respectively.

  The main apparatus 10 includes an external line interface unit (hereinafter referred to as an external line I / F unit) 12 for terminating control of the telephone line 11, and an internal line interface unit for performing data transmission with the radio telephones 20A to 20N via a wired extension transmission path 17. (Hereinafter referred to as an extension I / F unit) 13, a switch 14 for exchanging connection between the external line I / F unit 12 and the extension I / F unit 13, and each unit of the main unit 10 to control the telephone line 11 Control unit 15 that performs call control of each of the radio telephones 20A to 20N, and information necessary for control by the control unit 15, for example, each base unit 30 and the radio unit 40 and associated control amounts are managed in association with each other A storage unit 16 is provided for storing control amount management information 16A to be performed, placement management information 16B for managing the placement state of the wireless slave units, and programs.

In particular, the control unit 15 includes a microprocessor such as a CPU, and by reading and executing a program in the storage unit 16, the hardware and the program cooperate to realize various functional units, and perform various call controls. In addition, various management processes for the telephone system are performed.
The control unit 15 is provided with a determination unit 15A as a function unit. The determination unit 15A compares the control amount information notified from each parent device 30 or the wireless slave device 40 with the control amount management information stored in the storage unit 16, and determines the parent device or the wireless slave device from which the control amount information is notified. And the placement relationship with the parent device or the wireless child device corresponding to the control amount information.

FIG. 2 shows a configuration example of base unit 30 (30A, 30B to 30N). The base unit 30 includes an extension interface unit (hereinafter referred to as an extension I / F unit) 31, a wireless interface unit (hereinafter referred to as a wireless I / F unit) 32, a voice processing unit 33, a display unit 34, a key input unit 35, A storage unit 36, a power feeding unit 37, a placement detection unit 38, and a parent device control unit 39 are provided.
The extension I / F unit 31 is a circuit unit that performs data transmission with the main apparatus 10 via the extension transmission path 17. The wireless I / F unit 32 is a circuit unit that performs data communication with the wireless slave device 40 (40A, 40B to 40N) via a wireless line. The voice processing unit 33 is a circuit unit having a speakerphone function for making a call without using a wireless slave unit, that is, a handset, and a function for generating various notification sounds.

The display unit 34 is a circuit unit that performs various displays by controlling the LED and the LCD based on an instruction received from the main apparatus 10 by data transmission. The key input unit 35 is a circuit unit that detects a key operation by a user. The storage unit 36 is a memory that stores various types of information and programs used for processing operations in the parent device control unit 39. The various information includes, for example, a control amount unique to the parent device 30 used when the supply restriction of the charging signal is performed.
The power feeding unit 37 is a circuit unit that supplies power for charging a battery of the wireless slave device 40 electrically connected via the charging terminal 37A as a charging signal. The placement detection unit 38 is a circuit unit that detects whether the wireless slave device 40 is placed on the parent device 30.

The base unit control unit 39 has a microprocessor such as a CPU, and reads and executes the program in the storage unit 36, whereby the hardware and the program cooperate to control each unit of the base unit 30. It is.
The parent device control unit 39 controls the power supply unit 37 as a function unit, thereby restricting the supply of the charge signal supplied to the wireless child device 40 based on the control amount specific to the parent device 30. A master unit charging control unit 39A and a master unit measuring unit 39B that measures a control amount specific to the wireless slave unit 40 based on a supply restriction from the wireless slave unit 40 to the supplied charging signal are provided. The supply limit to the charging signal includes interruption of the charging signal and adjustment of the magnitude (physical quantity) of the charging signal, and the control amount includes the interruption time, number of interruptions, interruption interval, current value or voltage value of the charging signal. Etc. are used.

FIG. 3 shows a configuration example of the wireless slave device 40. The wireless slave unit 40 includes a wireless interface unit (hereinafter referred to as a wireless I / F unit) 41, a voice processing unit 42, a battery 43, a charging unit 44, a state detection unit 45, a storage unit 46, a display unit 47, and a key input unit. 48 and a wireless slave unit controller 49 are provided.
The wireless I / F unit 41 is a circuit unit that performs data communication with the parent device 30 via a wireless line. The voice processing unit 42 is a circuit unit having a voice call function using a speaker and a microphone (not shown) and a function for generating various notification sounds. The battery 43 is a circuit unit that stores an operating power source used in each unit of the wireless slave device 40. The charging unit 44 is a circuit unit that charges the battery 43 with power supplied as a charging signal from the parent device 30 via the charging terminal 44A. The state detection unit 45 is a circuit unit that detects an on-hook / off-hook state of the wireless slave device 40, that is, a mounting state.

The storage unit 46 is a memory for storing various information and programs used for processing operations in the wireless slave unit control unit 49. The various information includes, for example, a control amount unique to the wireless slave device 40 used when charging signal supply restriction is performed.
The display unit 47 is a circuit unit that performs various displays by controlling the LED and the LCD based on an instruction received from the parent device 30 by data communication. The key input unit 48 is a circuit unit that detects a key operation by a user.

The wireless slave device control unit 49 has a microprocessor such as a CPU, and reads and executes the program in the storage unit 46, whereby the hardware and the program cooperate to control each unit of the wireless slave device 40. It is a functional part.
The wireless slave unit control unit 49 controls the charging unit 44 as a functional unit, thereby restricting the supply of the charging signal supplied from the master unit 30 based on the control amount specific to the wireless slave unit 40. A slave unit charging control unit 49A to perform, and a slave unit measuring unit 49B that measures a control amount specific to the master unit 30 based on a supply restriction from the master unit 30 side with respect to the supplied charging signal. The supply restriction to the charging signal includes interruption of the charging signal and adjustment of the signal physical quantity. As the control amount, the interruption time, the number of interruptions, the interruption interval, the current value or the voltage value of the charging signal are used.

The state detection unit 45 detects an electrical connection between the charging terminal 37 </ b> A and the charging terminal 44 </ b> A used for the charging operation between the parent device 30 and the wireless slave device 40. Similarly, an electrical connection is detected.
In this case, an amount of electricity that changes due to the electrical connection between the charging terminal 37A and the charging terminal 44A, for example, a current value or a voltage value is taken in from the power feeding unit 37 or the charging unit 44, and wirelessly connected to the parent device 30 according to the change. The presence / absence of the child device 40 may be detected.
When the battery 43 of the wireless slave device 40 is fully charged, the charging power from the master device 30 to the wireless slave device 40 becomes zero. Therefore, for example, a current (charging signal) of a predetermined value or more is always flowed between the charging terminal 37A and the charging terminal 44A, or a predetermined potential is applied, so that the charging terminal 37A is fully charged. The presence or absence of an electrical connection between the charging terminal 44A and the charging terminal 44A may be detected.

4A and 4B are explanatory diagrams of the control amount management information and the placement management information. FIG. 4A is a configuration example of the control amount management information. FIG. 4B is a configuration example of the placement management information. 4 (c) is an example of erroneous placement of the wireless slave unit.
The control amount measured from the charging signal by the parent device measurement unit 39B of the parent device 30 is notified as control amount information to the control unit 15 of the main apparatus 10 by data transmission. Further, the control amount measured from the charging signal by the slave unit measuring means 49B of the wireless slave unit 40 is notified to the master unit control unit 39 of the master unit 30 by wireless communication, and the control unit of the main device 10 is similar to the above. 15 is notified as control amount information.

In the control unit 15 of the main apparatus 10, the determination unit 15A refers to the control amount management information 16A in the storage unit 16 and refers to the control amount of the control amount information notified from the parent device 30 or the wireless slave device 40. The wireless slave device 40 or the wireless slave device 40 is checked, and based on the combination of the master device 30 and the wireless slave device 40 that is the notification source of the control amount information, it is determined to which parent device 30 the wireless slave device 40 is mounted. The correspondence relationship is managed by the placement management information 16B.
At this time, as shown in FIG. 4A, the control amount management information 16A is obtained by assigning a unique control amount to each wireless telephone 20, or each parent device 30 and each wireless child device 40 in advance. Even when the child device 40 is placed on the parent device 30 belonging to a different wireless telephone 20, the placement relationship between the parent device 30 and the wireless child device 40 can be determined.

  In order to determine the notification source of the control amount information, identification information indicating the notification source may be stored in the information. Further, each wireless telephone 20 is connected to the extension I / F unit 13 of the main apparatus 10 via the extension transmission path 17 in a one-to-one relationship, and the extension I / F that has received the control amount information. Based on the port position of the unit 13, it may be determined from which radiotelephone 20 the control amount information is from.

Individual identification information is assigned to each parent device 30 and wireless slave device 40 in advance for processing in the main device 10, and in the example of FIG. 4B, the parent device is identified for each wireless slave device identification information. Identification information is managed in association with each other.
For example, as shown in FIG. 4C, when the wireless slave device 40A is erroneously placed on the master device 30B different from the original master device 30A, the placement management information 16B in FIG. “30B” is registered as parent device identification information corresponding to the wireless slave device 40A. Further, in this example, since the wireless slave device 40B is in a neglected state where it is not placed on any master device 30, “Left” is registered as the master device identification information corresponding to the wireless slave device 40B.

Next, the operation of the telephone system according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a sequence diagram showing the operation of the telephone system according to the first embodiment of the present invention. FIG. 6 is a signal waveform diagram showing supply restriction for a charging signal.
In this embodiment, when a wireless slave unit is placed on a base unit of a different wireless telephone, the placement relationship is determined by the main unit. Hereinafter, a case will be described as an example in which the wireless slave device 40A constituting the wireless telephone 20A paired with the parent device 30A is placed on the parent device 30B of another wireless telephone 20B. Further, the supply restriction on the charging signal is performed by the parent device charging control means 39A of each parent device 30, and the control amount from the charging signal is measured by the child device measuring means 49B of each wireless child device 40. Therefore, in the present embodiment, the parent device measurement unit 39B of each parent device 30 and the child device charging control unit 49A of the wireless child device 40 may not be provided.

When the wireless slave device 40A is placed at the placement location of the master device 30B at time T0 (step 100), the charging terminal 37A of the master device 30B and the charging terminal 44A of the wireless slave device 40A are electrically connected. Then, power is supplied from the power supply unit 37 of the parent device 30B to the charging unit 44 of the wireless slave device 40A by a charging signal, and charging of the battery 43 of the wireless slave device 40A is started (step 101).
Then, in the control section Tc starting from time T1 after a lapse of a predetermined time from time T0, the parent device control unit 39 of the parent device 30B supplies the charging signal to the wireless child device 40B by the parent device charging control means 39A. The charging is restricted (step 102), the supply-restricted charging signal is supplied to the wireless slave device 40A (step 103), and charging using the normal charging signal is resumed from time T2 after the supply restriction ends.

  At this time, the base unit charge control means 39A limits supply to the normal charge signal based on the control amount specific to the base unit 30B preset in the storage unit 36. For example, when the supply signal is limited by interrupting the charging signal and the interruption time is used as the control amount, power is supplied for the interruption time Ts unique to the main unit 30B as shown by the charging signal 51 in FIG. Supply of the charging signal is interrupted at the unit 37. At this time, the timing for performing the supply restriction may be immediately after the start of charging or during charging. Further, the supply restriction may be performed a plurality of times during the charging period.

When the supply signal is limited by interrupting the charging signal and the number of interruptions is used as the control amount, the power feeding unit is provided only for the number of interruptions Ns unique to the master unit 30B, as shown by the charging signal 52 in FIG. At 37, the supply of the charging signal is interrupted. Alternatively, when the interruption interval is used as the control amount, as shown by the charging signal 53 in FIG. 6, the supply of the charging signal is repeatedly interrupted by the power supply unit 37 at the interruption interval Ti unique to the parent device 30B.
When the supply signal is limited by changing the magnitude of the charge signal and a current value or a voltage value is used as the control amount, the current unique to the master unit 30B as shown in the charge signal 54 of FIG. The power supply unit 37 limits the magnitude of the charging signal so that the value Is and the voltage value Vs are obtained.

  On the other hand, the wireless slave device controller 49 of the wireless slave device 40A receives a charging signal from an arbitrary parent device 30 (30B) by the charging unit 44, and starts charging the battery 43. Thereafter, the slave unit measuring unit 49B measures the control amount via the state detection unit 45 and the charging unit 44 from the charge signal that is supplied and restricted by the master unit 30B in the control section Tc (step 104).

At this time, when the supply signal is restricted by interrupting the charging signal and the interruption time or interruption interval is used as the control amount, the slave unit measuring means 49B sets a timer provided in advance in the wireless slave unit control unit 49, for example. By using it, the interruption time and the interruption interval may be measured in accordance with the presence or absence of the charging signal detected by the state detection unit 45 or the charging unit 44.
Alternatively, when the number of interruptions is used as the control amount, the slave unit measuring unit 49B may measure the number of interruptions according to the presence or absence of the charging signal detected by the state detection unit 45 or the charging unit 44.

Further, in the case where the supply restriction is performed by changing the magnitude of the charging signal and the current value or the voltage value is used as the control amount, the slave unit measuring unit 49B is provided in advance in the wireless slave unit controller 49, for example. By using the AD converter, the voltage value of the charging signal detected by the state detection unit 45 or the charging unit 44 may be measured, or the voltage value measured from both ends of the resistance element may be converted into a current value.
Note that a circuit unit for measuring the control amount may be provided in the state detection unit 45 or the charging unit 44 without using the timer or the AD converter of the wireless slave unit control unit 49.

In this way, the wireless slave unit control unit 49 measures the control amount specific to the master unit 30 from the charging signal by the slave unit measuring means 49B, and uses the control amount as control amount information from the wireless I / F unit 41. It transmits to the main unit 30A via the wireless line (step 105).
The base unit control unit 39 of the base unit 30A receives the control amount information via the wireless I / F unit 32 and transmits it from the extension I / F unit 31 to the main apparatus 10 via the extension transmission path 17 (step 106). ).

The control unit 15 of the main device 10 receives control amount information from the wireless slave device 40A via the extension I / F unit 13, and controls the storage unit 16 based on the control amount indicated by the control amount information by the determination unit 15A. With reference to the amount management information 16A, the parent device 30B is confirmed as the parent device 30 corresponding to the control amount (step 107).
Then, it is determined that the wireless slave device 40A that is the transmission source of the control amount information is placed on the parent device 30B (step 108), and this placement relationship is stored in the placement management information 16B of the storage unit 16. .

As described above, when supplying a charging signal from the parent device 30 to the wireless child device 40, the charging signal supply unit 39A of the parent device 30 supplies the charging signal based on a control amount unique to the parent device 30. The control amount is measured by the slave unit measurement unit 49B of the wireless slave unit 40 from the charge signal that is restricted and supplied by the master unit charge control unit 39A, and the main amount is based on the control amount detected by the slave unit measurement unit 49B. Since the determination unit 15A of the device 10 determines the placement relationship between the parent device and the wireless child device, the system ID is wired and serial data communication between the parent device and the wireless child device as in the past. Therefore, it is not necessary to provide a circuit configuration for this purpose separately from the charge control circuit.
Therefore, it is possible to grasp the placement relationship between the master unit and the wireless slave unit without complicating the configuration of the master unit and the wireless slave unit as compared with the prior art, and call control for the base unit and the wireless slave unit in the placed state. In this case, it is possible to perform call control reflecting the placement relationship between the two.

  In particular, when the supply signal is limited by interrupting the charging signal, and the interruption time, the number of interruptions, or the interruption interval is used as the control amount, the existing state detection unit 45 detects the on-hook / off-hook of the wireless slave unit. Since the presence or absence of the charging signal is detected by the charging unit 44, the desired control amount can be measured by the slave unit measuring means 49B of the wireless slave unit control unit 49 based on the presence or absence of the charging signal. Therefore, the present embodiment can be applied only by correcting the program without adding a new circuit.

Further, the supply restriction for the charging signal can be performed at an arbitrary timing. For example, as shown in FIG. 6 described above, supply restriction on the charging signal is performed in the parent device 30 in accordance with the placement of the wireless slave device, and the control amount information from the wireless slave device 40 placed in the parent device 30 By determining the placement relationship based on the above, it is possible to automatically grasp the placement relationship with the parent device at the placement timing of the wireless slave device. It is possible to perform call control reflecting the positional relationship.
At this time, in accordance with an instruction from the main device 10, supply restriction on the charging signal is performed in an arbitrary parent device 30, and the placement relationship is based on the control amount information from the wireless slave device 40 placed on the parent device 30. For example, the main device 10 can grasp the placement relationship of any parent device 30 at a desired timing according to call processing.

In the above description, the case where the determination unit 15A is provided in the main device 10 has been described as an example. However, the determination unit 15A is not limited thereto, and may be provided in the parent device 30 or the wireless child device 40.
For example, the wireless slave device control unit 49 of the wireless slave device 40 is provided with the determination unit 15A, and based on the control amount specific to the master device 30 measured by the slave device measurement unit 49B, May be determined. At this time, the control amount management information 16 </ b> A for associating the control amount with the parent device may be stored in advance in the storage unit 46 of the wireless slave device 40 or obtained from the main device 10. Further, a control amount that can identify the parent device 30 by performing a predetermined calculation on the obtained control amount may be used, and it is not necessary to increase the storage capacity of the storage unit 46.

Further, the determination unit 15A is provided in the parent device control unit 39 of the parent device 30, and based on the control amount notified from the wireless child device 40 configuring the same wireless telephone through the wireless line, the wireless child device and the parent device May be determined.
For example, when control amount information is received from the paired wireless slave device 40A in step 105 of FIG. 5, the determination unit 15A of the parent device 30A confirms the parent device 30B corresponding to the control amount indicated by the control amount information. Then, it can be determined that the wireless slave device 40A is placed on the master device 30B. At this time, the control amount management information 16 </ b> A for associating the control amount with the parent device may be stored in advance in the storage unit 36 of the parent device 30. Further, a control amount that can identify the parent device 30 by performing a predetermined calculation on the obtained control amount may be used, and the storage capacity of the storage unit 36 can be reduced.

  As a specific example of the supply restriction for the charging signal in the parent device 30, for example, a switching element such as a transistor provided in the output stage of the power supply unit 37 of the parent device 30 is turned on / off from the parent device charging control means 39A. The charge signal can be interrupted by performing the off control. As for the current limit and voltage limit of the charging signal, for example, the switching of the resistance element provided in the output stage of the power feeding unit 37 of the parent device 30 is controlled by the switching element, or the operational amplifier used in the output stage By controlling the input signal and gain, the supply can be limited to a desired current value or voltage value.

Next, the operation of the telephone system according to the second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a sequence diagram showing the operation of the telephone system according to the second embodiment of the present invention.
In the first embodiment described above, the base unit charging control means 39A of the base unit 30 restricts the supply of the charging signal, and the base unit 30 of the wireless slave unit 40 uses the charging signal to determine the base unit 30. The case where the control amount peculiar to is measured has been described. In the present embodiment, conversely, supply of the charging signal is restricted by the handset charging control means 49A of the wireless handset 40, and the charging signal is wirelessly detected by the base measuring means 39B of the base 30. A case where a control amount unique to the slave unit 40 is measured will be described. Therefore, in the present embodiment, the slave unit measuring unit 49B of each wireless slave unit 40 and the master unit charging control unit 39A of the master unit 30 may not be provided. The signal waveform indicating the supply restriction for the charge signal is the same as that in FIG.

When the wireless slave device 40A is placed at the placement location of the master device 30B at time T0 (step 110), the charging terminal 37A of the master device 30B and the charging terminal 44A of the wireless slave device 40A are electrically connected. Then, power is supplied from the power supply unit 37 of the parent device 30B to the charging unit 44 of the wireless slave device 40A by a charging signal, and charging of the battery 43 of the wireless slave device 40A is started (step 111).
Then, in the control section Tc starting from time T1 after a lapse of a predetermined time from time T0, the slave unit controller 49 of the wireless slave unit 40A supplies the charging signal from the master unit 30B with the slave unit charging control means 49A. Restriction is performed (step 112). As a result, the supply of the charge signal supplied from the parent device 30B is restricted (step 113), and charging using the normal charge signal is resumed from time T2 after the supply restriction ends.

  At this time, the slave unit charging control means 49A limits supply to the normal charging signal based on the control amount specific to the wireless slave unit 40A preset in the storage unit 46. For example, when the supply signal is restricted by interrupting the charging signal and the interruption time is used as the control amount, as shown by the charging signal 51 in FIG. 6, only the interruption time Ts unique to the wireless slave device 40A is obtained. Charging unit 44 interrupts the charging signal capture. At this time, the supply restriction timing may be immediately after the start of charging or during charging. Further, the supply restriction may be performed a plurality of times during the charging period.

When the supply signal is limited by interrupting the charging signal and the number of interruptions is used as the control amount, as shown by the charging signal 52 in FIG. 6, charging is performed for the number of interruptions Ns unique to the wireless slave device 40A. The charging of the charging signal is interrupted at the unit 44. Alternatively, when the interruption interval is used as the control amount, as shown by the charging signal 53 in FIG. 6, the charging unit 44 repeatedly interrupts the charging signal capturing at the interruption interval Ti unique to the wireless slave device 40A.
Further, in the case where the supply restriction is performed by changing the magnitude of the charging signal and the current value or the voltage value is used as the control amount, as shown in the charging signal 54 in FIG. The charging unit 44 limits the magnitude of the charging signal so that the current value Is and the voltage value Vs are obtained.

On the other hand, the base unit control unit 39 of the base unit 30B controls the amount of control from the charging signal supplied on the wireless slave unit 40A side in the control section Tc from time T1 via the placement detection unit 38 and the power feeding unit 37. Is measured (step 114).
At this time, when the supply signal is restricted by interrupting the charging signal and the interruption time or interruption interval is used as the control amount, the parent device measuring means 39B uses, for example, a timer provided in advance in the parent device control unit 39. Thus, the interruption time or the interruption interval may be measured according to the presence or absence of the charging signal detected by the placement detection unit 38 or the power feeding unit 37.

Alternatively, when the number of interruptions is used as the control amount, the master unit measurement unit 39B may measure the number of interruptions according to the presence or absence of the charging signal detected by the placement detection unit 38 or the power feeding unit 37.
When the supply value is limited by changing the magnitude of the charging signal and the current value or the voltage value is used as the control amount, the parent device measuring unit 39B has, for example, an AD provided in advance in the parent device controller 39 By using the converter, the voltage value of the charging signal detected by the placement detection unit 38 or the power feeding unit 37 may be measured, or the voltage value measured from both ends of the resistance element may be converted into a current value.
Note that the placement detection unit 38 and the power feeding unit 37 may be provided with a circuit unit for measuring the control amount without using the timer or AD converter of the parent device control unit 39.

  In this way, the base unit control unit 39 measures the control amount specific to the wireless slave unit 40 from the charging signal by the base unit measuring means 39B, and uses the control amount as control amount information from the extension I / F unit 31. It transmits to the main apparatus 10 via the extension transmission path 17 (step 115).

The control unit 15 of the main apparatus 10 receives the control amount information from the master unit 30B via the extension I / F unit 13, and the control unit 15A controls the control amount of the storage unit 16 based on the control amount indicated by the control amount information. With reference to the management information 16A, the wireless slave device 40A is confirmed as the wireless slave device 40 corresponding to the control amount (step 116).
And it determines with the radio | wireless subunit | mobile_unit 40A having been mounted in the main | base station 30B which is the transmission origin of the controlled variable information (step 117), and stores this mounting relationship in the mounting management information 16B of the memory | storage part 16. FIG. .

In this way, when supplying a charging signal from the parent device 30 to the wireless slave device 40, the charging signal of the slave device charging control means 49 </ b> A of the wireless slave device 40 is based on the control amount specific to the wireless slave device 40. The control amount is measured by the master unit measurement unit 39B of the master unit 30 from the charge signal that is limited by the slave unit charge control unit 49A, and based on the control amount detected by the master unit measurement unit 39B. Since the determination unit 15A of the main apparatus 10 determines the placement relationship between the parent device and the wireless child device, the system ID is wired between the parent device and the wireless child device as in the past, and serial data is wired. There is no need to provide a circuit configuration for communication separately from the charge control circuit.
Therefore, it is possible to grasp the placement relationship between the master unit and the wireless slave unit without complicating the configuration of the master unit and the wireless slave unit as compared with the prior art, and call control for the base unit and the wireless slave unit in the placed state. In this case, it is possible to perform call control reflecting the placement relationship between the two.

  In particular, when the supply signal is restricted by interrupting the charging signal, and the interruption time, the number of interruptions, or the interruption interval is used as the control amount, the existing placement detection unit detects the on-hook / off-hook of the wireless slave unit. Since the presence or absence of the charge signal is detected by the power supply unit 37 or the power supply unit 37, a desired control amount can be measured by the master unit measurement means 39B of the master unit control unit 39 based on the presence or absence of the charge signal. Therefore, the present embodiment can be applied only by correcting the program without adding a new circuit.

Further, the supply restriction for the charging signal can be performed at an arbitrary timing. For example, as shown in FIG. 6 described above, the wireless slave device 40 restricts the supply of the charging signal in accordance with the placement on the parent device 30 and determines the placement relationship based on the control amount information from the parent device 30. Therefore, it is possible to automatically grasp the placement relationship with the parent device at the placement timing of the wireless slave device, and call control that reflects the placement relationship between the two when the call control is performed for the parent device and the wireless slave device thereafter. It can be performed.
At this time, in response to an instruction from the main device 10, the supply of charging signals is restricted by an arbitrary wireless slave device 40, and placed based on control amount information from the master device 30 on which the wireless slave device 40 is placed. The relationship may be determined. For example, the main device 10 can grasp the placement relationship of an arbitrary wireless slave device 40 at a desired timing according to call processing.

In the above description, the case where the determination unit 15A is provided in the main device 10 has been described as an example. However, the determination unit 15A is not limited thereto, and may be provided in the parent device 30.
For example, the determination unit 15A is provided in the parent device control unit 39 of the parent device 30, and the loading of the parent device 30B and the wireless child device 40A is based on the control amount specific to the wireless child device 40 measured by the parent device measurement means 39B. The positional relationship may be determined. At this time, the control amount management information 16A for associating the control amount with the parent device may be stored in advance in the storage unit 36 of the parent device 30, or may be obtained from the main device 20. In addition, a control amount that can identify the wireless slave device 40 by performing a predetermined calculation on the obtained control amount may be used, and there is no need to increase the storage capacity of the storage unit 36.

  As a specific example of the supply restriction for the charging signal in the wireless slave device 40, for example, a switching element such as a transistor provided in the input stage of the charging unit 44 of the wireless slave device 40 is turned on from the slave device charging control means 49A. The charging signal can be interrupted by performing the off / control. As for the current limitation and voltage limitation of the charging signal, for example, by controlling connection switching of a resistance element provided at the input stage of the charging unit 44 of the wireless slave unit 40 with a switching element, a desired current value or voltage value is set. Supply can be limited to

In each of the embodiments described above, the battery 43 of the wireless slave device 40 is not fully charged, but has been described on the assumption that a charging signal flows for charging. However, the battery 43 is fully charged and needs to be charged. Sometimes not.
In such a case, a normal charging operation can be performed by constantly flowing a current of a predetermined value or more as a charging signal between the charging terminal 37A and the charging terminal 44A, or by constantly applying a predetermined potential as a charging signal. Similarly, it is possible to restrict supply based on a specific control amount for the charge signal.

It is a block diagram which shows the structure of the telephone system concerning one embodiment of this invention. It is a block diagram which shows the structure of a main | base station. It is a block diagram which shows the structure of a wireless subunit | mobile_unit. It is a structural example of control amount management information and mounting management information. It is a sequence diagram which shows operation | movement of the telephone system concerning the 1st Embodiment of this invention. It is a signal waveform diagram which shows the supply restriction | limiting with respect to a charge signal. It is a sequence diagram which shows operation | movement of the telephone system concerning the 2nd Embodiment of this Embodiment. It is a sequence diagram which shows the conventional mounting detection method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Main apparatus, 11 ... Telephone line, 12 ... External line I / F part, 13 ... Extension I / F part, 14 ... Switch, 15 ... Control part, 15A ... Determination means, 16 ... Memory | storage part, 16A ... Control amount management Information: 16B: Placement management information, 17: Extension transmission path, 20, 20A, 20B, ..., 20N ... Wireless telephone, 30, 30A, 30B, ..., 30N ... Base unit, 31: Extension I / F section, 32 ... Wireless I / F unit, 33 ... Audio processing unit, 34 ... Display unit, 35 ... Key input unit, 36 ... Storage unit, 37 ... Power feeding unit, 37A ... Charging terminal, 38 ... Placement detection unit, 39 ... Master unit Control unit, 39A ... Base unit charging control means, 39B ... Base unit measurement means, 40, 40A, 40B, ..., 40N ... Wireless slave unit, 41 ... Wireless I / F unit, 42 ... Audio processing unit, 43 ... Battery, 44 ... Charging unit, 44A ... Charging terminal, 45 ... State detection unit, 46 ... Storage unit, 47 ... Radical 113, 48 ... key input unit, 49 ... radio personal station controller, 49A ... handset charging control means, 49B ... handset measuring means.

Claims (5)

A main apparatus connected to a telephone line and a plurality of extension telephones connected to the main apparatus, and connected as the extension telephone to the parent apparatus via a radio line and a parent apparatus connected to the main apparatus When the wireless slave unit is placed at a placement location provided in the master unit, the charging terminals of the master unit and the wireless slave unit that are electrically connected are connected. In a telephone system using a wireless telephone to which a charging signal for charging a battery of the wireless slave unit is supplied from the master unit to the wireless slave unit via
When supplying a charging signal from the parent device to the wireless slave device, charging control means for restricting the supply of the charging signal based on a control amount specific to the parent device or the wireless slave device;
Measuring means for measuring the control amount from the charging signal supplied by the charging control means;
A telephone system comprising: determination means for determining a placement relationship between the master unit and the wireless slave unit based on the control amount measured by the measurement unit. The telephone system according to claim 1, wherein
The control amount consists of the interruption time, the number of interruptions, or the interruption interval of the charging signal,
The charging control means interrupts the supply of the charging signal based on the interruption time, the number of interruptions, or the interruption interval specific to the parent device or the wireless child device as a supply restriction for the charging signal,
The telephone system characterized in that the measuring means measures the control amount based on an interruption time, interruption frequency, or interruption interval of the charging signal. The telephone system according to claim 1, wherein
The control amount includes a current value or a voltage value of the charging signal,
The charging control unit restricts the supply of the charging signal so as to be a current value or a voltage value specific to the parent device or the wireless child device as a supply restriction for the charging signal,
The telephone system, wherein the measuring unit measures the control amount based on a current value or a voltage value of the charging signal. The telephone system according to claim 1, wherein
The charge control means controls a charging signal provided to the base unit and supplied to the wireless slave unit based on a control amount specific to the base unit,
The measuring means measures the control amount from a charging signal provided from the master unit provided in the wireless slave unit,
The determining means is provided in the main device, the master unit or the wireless slave unit, and determines a placement relationship from the master unit corresponding to the control amount measured by the measuring unit and the wireless slave unit. A featured telephone system. The telephone system according to claim 1, wherein
The charging control unit is provided in the wireless slave unit and controls a charging signal supplied from the master unit based on a control amount unique to the wireless slave unit.
The measuring means measures the control amount from a charging signal provided in the master unit and controlled by the wireless slave unit,
The determination unit is provided in the main device or the parent device, and determines a placement relationship from the wireless child device corresponding to the control amount measured by the measuring unit and the parent device. .

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