JP3577962B2 - Cordless parent and child phone - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a parent-child telephone, and more particularly, to a cordless parent-child telephone including a parent device connected to an outside line and a child device wirelessly connected to the parent device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a cordless parent-child telephone including a parent device connected to an outside line and a child device connected to the parent device via a wireless line. In such cordless parent-child telephones, currently, in Japan, 89 channels having a frequency band of 1 to 89 channels are permitted to be used, and among them, 46 channels and 89 channels are used for the parent device and the child device. Between the master unit and the slave unit by using a vacant channel among the remaining channels 1 to 45 and 47 to 88. It is prescribed to do.
[0003]
As described above, in this type of parent-child telephone, only the 46-channel or the 89-channel can be used as the control channel. Therefore, conventionally, the control channel is set to either the 46-channel or the 89-channel for each parent-child telephone. The device is manufactured and sold in the set state.
[0004]
[Problems to be solved by the invention]
However, depending on the area where the parent and child telephones are installed, there may be devices or facilities that generate radio waves serving as jamming radio waves around the frequency band of 46 channels or 89 channels. May not be able to connect successfully. In such a case, the conventional parent-child telephone requires measures such as re-sending the device to the manufacturer and replacing the ROM, and there is a problem that a serviceman cannot be dispatched to the site and repaired immediately.
[0005]
On the other hand, for example, as in a telephone set described in Japanese Patent Publication No. Hei 6-18347, the base unit has a configuration in which two control channels are alternately received during standby, so that both control channels can be used. One of the two control channels is set as a control channel that is always used, and when the control channel is closed for a certain time or longer, the control channel is switched to another control channel, as described in Japanese Patent No. 2555889. Countermeasures for providing means are conceivable.
[0006]
However, these countermeasures have a problem that the protocol becomes more complicated than in the case where the number of control channels is fixed to one, and it may take a long time to connect.
[0007]
The present invention, in the extension telephone of this kind, serviceman even without replacement of the ROM Ki out to change the control channel in local and unintentionally control channel by erroneous operation of the user and purpose that you like is not Shimawa rewritten.
[0008]
[Means for Solving the Problems]
Cordless extension telephone according to claim 1 which has been made in order to achieve the purpose that written is connected by wireless communication between the host and terminals, of the 46 channels and 89 channels defined as the control channel one channel leave pre Me set as a control channel to be used between the host and terminals, and maintenance mode executing means for executing the maintenance mode by performing a predetermined operation, the maintenance mode is executed In the cordless parent-child telephone having the control channel rewriting means for rewriting the control channel to the remaining one channel, the maintenance mode execution means is activated by a special key operation not informed to the user. The control channel rewriting means is configured to execute any one of 46 and 89 while executing the maintenance mode. 2-digit number specifying a is characterized by being configured so as to perform a rewriting process of the control channel only when keyed.
[0009]
According to the cordless parent-child telephone set of the first aspect, since one channel is set in advance as a control channel, the protocol for using the control channel is simple. If a problem occurs with the preset control channel, a serviceman goes to the site and performs a predetermined operation to activate the maintenance mode executing means and to activate the control channel rewriting means. In the maintenance mode, the control channel is rewritten to another one. The maintenance mode is started by a special key operation that is not notified to the user, and is set to be started only after performing an operation that is not performed by the user in the normal state. Further, according to the cordless parent-child telephone set of claim 1, even if the maintenance mode is activated by a user's erroneous operation, the control channel can be rewritten unless the control channel is directly designated by a two-digit numerical input. Nothing is done. Therefore, it is possible to accurately prevent a situation in which the control channel is rewritten unexpectedly due to an erroneous operation. As a result, in the cordless parent-child telephone set of claim 1, when there is a defect in the control channel set at the time of shipment from the factory, the service person can easily rewrite this to another control channel on site and transfer the device to the factory. feed back or the like of time loss is not Rutotomoni, it can avoid the problem that is rewritten control channel by erroneous operation of the user.
[0010]
In particular cordless extension telephone 請 Motomeko 2, in a cordless extension telephone system according to claim 1, wherein the maintenance mode executing means, when a key operation of a predetermined number in a particular combination operation or a predetermined times of a plurality of keys It is configured to be activated only by
[0011]
According to the cordless extension telephone according to claim 2, maintenance mode itself, in normal operation by leaving a structure which is not activated, it is possible to prevent rewriting of the control channel unintended even more accurately.
[0012]
According to a third aspect of the present invention, there is provided a cordless parent-child telephone according to the first or second aspect, wherein the maintenance mode execution unit and the control channel rewriting unit are provided in each of the parent unit and the child unit. I have.
[0013]
According to the cordless parent-child telephone set of the third aspect, the control channel is rewritten for the parent device, and the control channel is also rewritten for the child device, whereby the control channel is set between the parent device and the child device. Can be matched.
[0014]
According to a fourth aspect of the present invention , there is provided the cordless parent-child telephone set according to any one of the first to third aspects, wherein the control channel currently set is displayed upon rewriting the control channel in the maintenance mode. A setting status display unit is provided.
[0015]
According to the cordless extension telephone of the fourth aspect, before rewriting the control channel in the maintenance mode, it is possible to check the setting of the current control channel. Then, after this confirmation, from the generation to which the control channel of the isoelectric wave failure, it is possible to perform rewriting definitely to no control channel of such a failure.
[0016]
According to a fifth aspect of the present invention, the control channel setting status display means is provided in each of the master unit and the slave unit.
[0017]
According to the cordless parent-child telephone set of claim 5, since the current control channel setting status can be confirmed for each of the parent device and the child device, there is a discrepancy in the control channel between the parent device and the child device. Can be easily checked whether a failure has occurred and whether the settings after the control channel rewriting match between the master unit and the slave unit.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a master unit 10 connected to a telephone line and an external line as shown in FIG. 1A and a slave unit 50 communicating with the master unit via a wireless line as shown in FIG. The present invention relates to a cordless parent-child telephone.
[0019]
Base unit 10 is configured as a multifunctional telephone having an answering machine function, a facsimile communication function, a copy function, and the like. The main unit 10 includes, as main components, a controller 11 which controls the control center, an operation panel 13, a liquid crystal display (LCD) 15, a call bell 17, a scanner 19, a printer 21, a code / decoder 23, a modem 25, and a line. A control circuit (NCU) 27, a handset 29, a speaker 31, a microphone 33, a wireless communication control circuit 35, an antenna 37, and a switch 39 are provided.
[0020]
The controller 11 is a logical operation circuit including a CPU, a ROM, a RAM, an EEPROM, a timer, and the like. The CPU executes various control processes such as a voice response control and a control channel rewriting control described later. Note that programs for various control processes executed by the CPU, data necessary for the control processes, and the like are stored in the ROM in advance. The RAM is used as a work area and a buffer in various control processes. Further, the EEPROM is provided for storing information such as control channel settings and telephone directory registration. In addition, the timer is used for processing such as measuring the duration of a voice in voice response control.
[0021]
The operation panel 13 includes a numeric keypad used for inputting a telephone number and a facsimile number for communication with the outside, a function key for switching a mode for executing a facsimile function provided in the base unit 10, and a telephone. It is provided with a confirmation key and the like to be pressed at the time of book registration or the like. The LCD 15 is used for displaying a function selection when the facsimile transmission function is activated, displaying the telephone number of the caller corresponding to the number display service, displaying various messages, and the like. is there. The ringing bell 17 is for ringing the ringing bell when there is an incoming call from an outside line. The ringing ring 17 repeats a ringing for one second and a stop for two seconds at the time of an incoming call to notify of the incoming call. The scanner 19 is provided for reading a document when facsimile transmission or copying is performed by the master device 10. The printer 21 is provided to print out facsimile data received from an external device on recording paper or to execute a copy function of printing out image data of a document read by the scanner 19 on recording paper. The encoder / decoder 23 encodes the image data read by the scanner 19 at the time of facsimile transmission into a data format for facsimile transmission such as a G3 compression format, and conversely, a format capable of outputting compressed facsimile image data to a printer. It is provided for decoding into the data of.
[0022]
The modem 25 and the NCU 27 are provided for performing a telephone call and facsimile transmission / reception with the outside via a telephone line. Also, in the present embodiment, the modem 25 transmits a voice in a predetermined frequency band corresponding to a human voice so that the modem 25 can also function as a DSP for making a line connection by voice response at the time of an incoming call from an outside line. It is configured to be able to perform extraction processing and the like.
[0023]
The handset 29 performs a call via a telephone line by performing an off-hook operation when making a call through an outside line or when an incoming call is made from an outside line. The speaker 31 is provided to output the voice of the other party when a conversation is performed in a hands-free state (hereinafter, referred to as “hands-free talk”). Further, the microphone 33 is provided to detect the voice of the user at the time of hands-free talk and to transmit the voice to the other party, or to detect a voice response for starting hands-free talk at the time of an incoming call. The wireless communication control circuit 35 is provided for performing wireless communication between the master device 10 and the slave device 50 via the antenna 37. Further, the switch 39 is for switching between the voice input from the microphone 33 and the voice input from the slave 50 received by the antenna 37 to the modem 25.
[0024]
The child device 50 includes, as main components, a controller 51 which controls the control center, an operation panel 53, an LCD 55, a call bell 57, a speaker 61, a microphone 63, a wireless communication control circuit 65, and an antenna 67.
[0025]
The controller 51 is a logical operation circuit including a CPU, a ROM, a RAM, an EEPROM, and the like, and executes various control processes by the CPU. Note that programs for various control processes executed by the CPU, data necessary for the control processes, and the like are stored in the ROM in advance. The RAM is used as a work area and a buffer in various control processes. Further, the EEPROM is provided for storing information such as control channel settings and telephone directory registration.
[0026]
The operation panel 53 includes a numeric keypad used for inputting a telephone number and a facsimile number for communication with the outside, an off-hook key for performing an off-hook operation at the time of an incoming call, and a confirmation key pressed for registering a telephone directory. Etc. are provided. The LCD 55 is for displaying the telephone number of the caller corresponding to the number display service, displaying various messages, and the like. The ringing bell 57 is for ringing the ringing bell when there is an incoming call from an outside line. The ringing bell 57 notifies the incoming call repeatedly by ringing for one second and stopping for two seconds at the time of incoming call.
[0027]
The speaker 61 is provided to output the voice of the other party during a call with an outside line or an extension call with the base unit 10. On the other hand, the microphone 63 is provided for detecting the sound of the slave unit 50 and transmitting the sound to the outside line or the master unit 10 during an external call or an internal call. The microphone 63 also has a role of detecting a voice response for starting hands-free talk at the time of an incoming call. The wireless communication control circuit 65 is provided for performing wireless communication between the child device 50 and the parent device 10 via the antenna 67.
[0028]
Next, the contents of the maintenance mode processing for control channel rewriting executed by the cordless parent-child telephone of the present embodiment will be described with reference to the flowchart of FIG. The maintenance mode processing is executed in the same processing procedure for each of the master unit 10 and the slave unit 50. In the following description, a description will be given of a maintenance mode process for the parent machine 10.
[0029]
In this maintenance mode process, the service person goes to the site and, for example, simultaneously presses a plurality of keys of a specific combination on the operation panel 13 of the base unit 10, or presses a predetermined number of keys in a short time. It is started by performing a pressing operation. The key operation method for starting the maintenance mode is not described in the operation manual of the cordless parent-child phone of the present embodiment, and is configured so that the user cannot start the maintenance mode without permission. It is.
[0030]
When the maintenance mode is activated in this way, first, a key input from the operation panel 13 is waited (S10). If there is a key input (S10: YES), it is determined whether this key input is a key input for instructing start of control channel rewriting (S20). If it is not a key input of the control channel rewrite instruction (S20: NO), the process proceeds to a maintenance mode process other than the control channel rewrite including a check as to whether or not the key input is for starting another maintenance corresponding to the key input. (S100), and then exits this process.
[0031]
On the other hand, if the key input is for instructing the start of the maintenance mode (S20: YES), the current control channel setting status is displayed on the LCD 15 (S30). This is for informing the serviceman whether the current control channel setting status is 46 channels or 89 channels. Next, the process waits for a key input again (S40). If a key input has been made (S40: YES), it is determined whether or not the input key is a dial key (S50). If the key is not a dial key (S40: NO), input of the dial key is waited for (S40).
[0032]
If the input is a dial key input (S50: YES), the lower numerical value of the rewrite control channel buffer secured in the RAM of the controller 11 is shifted upward, and the input numerical value is stored lower. The storage process is executed (S60). Then, it is determined whether a channel number has been set in the rewriting control channel buffer (S70). If it is determined that the channel number has not been set in the rewriting control buffer (S70: NO), the process returns to S40 and waits for the next dial key input. Here, for example, when the service person inputs two numerical values “4” and “6” using the dial keys, the channel number “46” is set in the rewriting control channel buffer. become. Times [0033]
On the other hand, if it is determined that the channel number has been set in the rewrite control channel buffer (S70: YES), it is determined whether the channel set in the rewrite control channel buffer is 46 or 89. (S80). If it is determined that either the 46th channel or the 89th channel has been set (S80: YES), the control channel of the master unit 10 is rewritten according to the channel number set in the rewriting control channel buffer ( S90), exits this process. On the other hand, if the channel set in the rewriting control channel buffer is neither the 46th channel nor the 89th channel (S80: NO), a control channel rewriting error is notified (S95), and the process exits.
[0034]
The above processing is executed in accordance with the same procedure by starting the maintenance mode by performing the same specific key operation as that of the base unit 10 on the slave unit 50. Therefore, the serviceman performs the above-described processing so that the same control channel as that of the base unit 10 is set for the slave unit 50. During this time, the process of displaying the current control channel setting status on the LCD 55 is executed in the same manner as in the case of the base unit 10, and the serviceman checks the current control channel setting status while checking the current control channel setting state with the base unit 10. The control channel is rewritten so that the same control channel is set in step 50.
[0035]
According to the present embodiment, by executing the maintenance mode processing having the above-described configuration for each of base unit 10 and handset 50, the serviceman can take the cordless base phone without returning to the factory or the like. The control channel can be rewritten from the 46th channel to the 89th channel or from the 89th channel to the 46th channel at the place where the parent-child telephone is installed. In rewriting the control channel, the current setting status of the control channel is displayed on the LCDs 15 and 55, so that the service person can easily know the control channel that is difficult to use due to jamming radio waves or the like. It can also be confirmed after rewriting that the control channels of the parent device 10 and the child device 50 match, and the rewriting process can be promptly performed to the optimal control channel. Furthermore, in the present embodiment, the maintenance mode activation method itself is performed by a special key operation that is not informed to the user, so that the user accidentally activates the maintenance mode, and This prevents a problem that the control channel is rewritten contrary to the above. In addition, even if the user activates the maintenance mode by mistake, the control channel is not rewritten unless the channel number indicating the control channel is set in the rewrite control channel buffer. Therefore, even if the maintenance mode is activated, the control channel is not undesirably rewritten.
[0036]
As described above, one embodiment of the present invention has been described. However, the present invention is not limited to this embodiment, and it goes without saying that various other forms can be adopted without departing from the gist of the present invention. .
[0037]
【The invention's effect】
As described above, according to the cordless parent-child telephone set of claims 1 to 5, the service person can change the control channel on site without replacing the ROM or the like, and the control Maintenance for a failure of the control channel can be promptly performed. Further, since the control channel is set to one channel which is not affected by jamming radio waves or the like, there is no need to adopt a complicated communication protocol such as always checking two control channels, and the control processing of the parent-child telephone is simplified. become. As a result, there is no problem that it takes time to connect the master unit and the slave unit.
[0038]
Further, according to the cordless parent-child telephone set of claims 1 to 5, control is performed only when a predetermined key input for designating any one of the two control channels is performed in the maintenance mode. Since the configuration is such that the channel rewriting process is executed, even if the maintenance mode is erroneously executed due to an erroneous operation of the user, it is possible to prevent a problem that the control channel is rewritten unexpectedly. Has been made.
[0039]
Further, according to the cordless parent and child telephone set of the second aspect, it is possible to more appropriately prevent the control channel from being rewritten unintended.
[0040]
According to the cordless parent-child telephone set of claim 3, the control channel is rewritten for the parent device and the control channel is also rewritten for the child device, whereby the control channel is set between the parent device and the child device. Can be matched.
[0041]
Furthermore, according to the cordless extension telephone according to claim 4, before rewriting the control channel, it is possible to check the setting of the current control channel. Then, after this confirmation, from the generation to which the control channel of the isoelectric wave failure, it is possible to perform rewriting definitely to no control channel of such a failure.
[0042]
According to the cordless parent-child telephone set of claim 5, since the current control channel setting status can be confirmed for each of the parent device and the child device, there is a discrepancy in the control channel between the parent device and the child device. Therefore, it is possible to easily confirm whether or not a failure has occurred, and whether or not the setting status after rewriting the control channel matches between the master unit and the slave unit.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration of a cordless parent-child phone according to an embodiment, wherein (A) is a block diagram of a parent device and (B) is a block diagram of a child device.
FIG. 2 is a flowchart showing the contents of a maintenance mode process centering on a control channel rewriting process in the embodiment.
[Explanation of symbols]
10: master unit, 11: controller, 13, 53: operation panel, 15, 55: LCD, 25: modem, 27: NCU, 35, 65: wireless communication control Circuit, 37, 67 ... antenna, 50 ... slave unit.

Claims (5)

Connect via wireless communication between the host and terminals, pre Me set one channel of the 46 channels and 89 channels defined as the control channel as a control channel to be used between the master unit and the slave unit Set
Maintenance mode execution means for executing the maintenance mode by performing a predetermined operation;
Control channel rewriting means for rewriting the control channel to the remaining one channel when the maintenance mode is executed;
In a cordless parent-child phone with
The maintenance mode execution means is configured to be activated by a special key operation not informed to the user,
The control channel rewriting means is configured to execute the control channel rewriting process only when a two-digit numerical value designating either 46 or 89 is inputted by a key while the maintenance mode is being executed. cordless extension telephone, characterized in <br/> that it is. The cordless parent-child phone according to claim 1,
The cordless parent-child telephone set is characterized in that the maintenance mode executing means is activated only when a specific combination operation of a plurality of keys or a predetermined number of key operations within a predetermined time is performed . The cordless parent-child phone according to claim 1 or 2,
A cordless parent-child telephone, wherein the maintenance mode executing means and the control channel rewriting means are provided in each of the parent device and the child device. The cordless parent-child phone according to any one of claims 1 to 3,
A cordless parent-child telephone comprising control channel setting status display means for displaying a currently set control channel when rewriting a control channel in the maintenance mode . The cordless parent-child phone according to claim 4,
A cordless parent-child telephone, wherein the control channel setting status display means is provided in each of the parent device and the child device.

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