JPH0479621A - cordless telephone device - Google Patents

Abstract

PURPOSE:To reduce the occurrence of errors at the time of connecting by selecting a control channel out of the control channels stored in the set content storing means of each connecting device and each radio telephone set. CONSTITUTION:When the talk key 45 of a radio telephone set 4 is pressed, a control circuit 33 detects it and sends a signal which requests the connection to a connecting device 3 to the device 3 by using a control channel stored in a control channel memory 51 on the telephone set 4 side. Upon receiving the connection requesting signal from the telephone set 4 through the control channel, a radio circuit 32 outputs the information about a vacant communication channel stored in advance to the telephone set 4 under the control of a control circuit 33. When the above-mentioned signal delivery and reception are completed, the pairs of the devices 3 and telephones sets 4 shift their signal transmitting channel from the control channel to a communication channel under the control of each control circuit 33 and 44 and communication is started between the telephone sets 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cordless telephone device in which a plurality of connection devices are connected by wire to a main device, and each connection device and each wireless telephone are wirelessly connected one-to-one.

2. Description of the Related Art Conventionally, in a cordless telephone device in which a plurality of connection devices are connected by wire to a main device, and each connection device and each wireless telephone are wirelessly connected on a one-to-one basis, wireless communication between the wireless telephone and the connection device is known. When communicating, an empty channel is selected from among a plurality of wireless communication channels set for communication.

FIG. 2 is a block diagram showing the overall configuration of a cordless telephone device in which a plurality of connection devices are connected by wire to a main device, and each connection device and each wireless telephone are wirelessly connected one-to-one.

In FIG. 2, 1 is a telephone line connected to a fixed telephone network (not shown), 2 is a main device to which the telephone line 1 is connected, controls the entire cordless telephone and forms a communication path, and 3 is a main device connected to a fixed telephone network (not shown); , is a connection device as a wireless transmitter/receiver that is connected to the main device 2 by wire.

4 is a wireless telephone that performs wireless communication with the connecting device 3, and the wireless telephone 4 and the connecting device 3 are arranged in a plurality of pairs (hereinafter referred to as ``plan'' or ``set n'') in one-to-one correspondence. It consists of

FIG. 3 shows the conventional cordless telephone device.
2 is a block diagram showing a specific configuration of a connection device 3 and a wireless telephone 4. FIG.

In the connection device 3 in FIG. 3, 31 is a telephone interface circuit for performing data communication and communication path formation with the main device 2, and 32 is a transmitting/receiving unit (for performing wireless communication with the wireless telephone 4). (not shown).

33 performs overall control of the connection device 3, such as switching transmission and reception of the radio circuit 32, changing the transmission and reception frequency, and transmitting signal processing based on the respective transmission formats of the main unit 2 and the line telephone 4. The control circuit 34 is an antenna that performs wireless transmission and reception.

On the other hand, in the radio telephone 4 in FIG. This is a telephone communication circuit that processes the transmitting signal and the receiving signal.

Further, in the wireless telephone 4, 43a is a receiver;
3b is a transmitter; 44 is a control circuit that performs overall control of the radio telephone 4, such as switching between transmission and reception of the radio circuit 41, changing the transmission and reception frequency, and processing transmission signals based on the transmission format of the pairing device 3; 45; 46 is an end key that is pressed when the call ends. 47 is a dial key. 48 is a ring that rings when a call is received. 49 is an antenna that performs wireless transmission and reception.

Next, the operation of the conventional cordless telephone device having the above configuration will be explained.

Generally, wireless communication between the connecting device 3 and the wireless telephone 4 is performed using, for example, frequency division multiple access (F DMA).
) method, etc., and for signal transmission between the connection device 3 and the wireless telephone 4, there is a control channel for transmitting connection control signals, and a communication channel for transmitting voice signals, etc. channel is assigned.

A plurality of control channels and communication channels are allocated not to each cordless telephone device, but to each predetermined area in which a plurality of cordless telephone devices exist.

Therefore, in conventional cordless telephone devices, the control channel is determined at the time of startup of each cordless telephone device so that a single and fixed control channel is used for each cordless telephone device, and the communication channel is In this case, all the cordless telephone devices arbitrarily select and use an available communication channel from among the plurality of communication channels.

Each connection device 3 and each radio telephone 4 in each cordless telephone device mutually transmits and receives signals for connection using a fixed control channel common to the cordless telephone device when mutually connected. After that, an empty channel is selected from among a plurality of communication channels to make and receive calls.

The operation will now be described below, taking as an example a call from the wireless telephone 4 to the connection device 3.

During standby, the control circuit 33 of each connection device 3 is in a reception state, and controls the radio circuit 32 to change the reception frequency to the fixed control channel determined at the time of startup described above and to a plurality of communication channels. sequentially switch to each channel of
The presence or absence of radio input from the antenna 34 in all these channels is monitored.

As a result, each connection device 3 monitors the usage status of control channels and communication channels in this cordless telephone device and other nearby cordless telephone devices, and also stores vacant communication channels.

When the call key 45 of the radio telephone 4 is pressed in this state, the control circuit 44 of the radio telephone 4 detects this and further controls the radio circuit 41 to request connection with the connection device 3. A signal is sent from the antenna 49 to the connection device 3 using the control channel determined at startup, and thereafter enters a standby state in which the control channel is received.

When the wireless circuit 32 on the side of the connection device 3 receives a signal for connection from the wireless telephone 4 through the above-mentioned control channel, the control circuit 33 controls the connection device 3.
outputs the previously stored information on vacant communication channels to the wireless telephone 4 that is the originator of the connection request signal, using the same control channel used when receiving the connection request signal.

Furthermore, the reconnection device 3 and the wireless telephone 4 change mutual signal transmission channels from the control channel determined at the time of startup under the control of each control circuit 33.44 to information on the vacant communication channel. The communication channel is then transferred to the communication channel shown in , and thereafter, calls and calls from the wireless telephone 4 to the fixed telephone network etc. are performed using this communication channel.

On the other hand, in the case of an incoming call to the wireless telephone 4, the telephone interface circuit 31 of the connecting device 3 receives the incoming signal from the landline telephone etc. via the telephone line 1 and the main device 2, and based on this, the control circuit 33 outputs a signal requesting an incoming call connection and information on a vacant communication channel stored in advance to the destination radio telephone 4 using a control channel determined at startup.

The receiving wireless telephone 4, which is in the standby state in accordance with the control channel determined at startup, receives the incoming connection request signal and the information on the free communication channel from the connection device 3, and performs the free communication. After recognizing the channel frequency for
A connection confirmation signal is output to the connection device 3 using the same control channel as when it was received.

The reconnection device 3 and the wireless telephone 4 then change the mutual signal transmission channels from the control channel determined at startup under the control of each control circuit 33, 44 to the information on the vacant communication channel. A connection operation is performed by shifting to the communication channel indicated by , and in conjunction with this, the ringer 48 on the radio telephone 4 side rings in response to an incoming call.

In this way, in the above-mentioned conventional cordless telephone devices, by setting the control channels used for signal transmission for connection control in advance for each cordless telephone device, it is possible to make effective use of the limited control channels. I'm trying.

Problems to be Solved by the Invention However, in the above conventional cordless telephone device, the control channel used between the connection device 3 and the radio telephone 4 is fixed to a single control channel for each cordless telephone device. For example, if there is a large volume of outgoing and incoming calls and two sets of the same cordless telephone device are making and receiving calls at the same time, it is possible that other control channels used by other cordless telephone devices may become vacant. Even if there is, the connection control signals of both sides will compete on the same control channel,
There was a problem in that a connection error occurred between these two sets, causing trouble in receiving and making calls.

The present invention solves the above problems, and reduces the occurrence of connection errors between multiple connection devices and wireless telephone sets due to contention on a single control channel, thereby providing limited control. An object of the present invention is to provide a cordless telephone device that allows a plurality of connection devices and wireless telephone sets to effectively use a communication channel.

Means for Solving the Problems In order to achieve the above object, the present invention provides a plurality of wireless telephones and a plurality of connection devices each having a one-to-one correspondence with each of the plurality of wireless telephones. a selection content setting input means for setting and inputting the contents of selectable control channels for each pair of a connecting device and a wireless telephone; and a setting content storage means for storing the setting contents input from the selection content setting input means. so that the control channel to be used between the pair of connecting devices and the wireless telephone is selected from among the control channels stored in the setting storage means of each connecting device and each wireless telephone. did.

According to the present invention, with the above-described configuration, the content of channels that can be used among a plurality of control channels can be set for each connection device and I-line telephone, so that a set of a plurality of connection devices and wireless telephones can be connected to a single set. It is possible to reduce the occurrence of mutual connection errors due to contention between control channels, and to effectively use limited control channels among a plurality of sets of connection devices and wireless telephones.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. still,
The cordless telephone device of the present invention has the same general configuration as that shown in FIG.
The specific configuration of the wireless telephone 4 is different from the connecting device 3 and the wireless telephone 4 shown in FIG. 3 described in the related art.

Therefore, in FIG. 1 showing the specific configuration of the connecting device 3 and the wireless telephone 4 in the cordless telephone device according to an embodiment of the present invention, the connecting device 3 and the wireless telephone 4 of the conventional cordless telephone device in FIG. Elements that are the same as those in FIG. 3 will be given the same reference numerals as those in FIG.

In the connection device 3 of the cordless telephone device according to the embodiment of the present invention, 35 is a setting switch as a selection content setting manual means for setting the contents of the control channel that can be used for each connection device 3; Reference numeral 36 denotes a control channel memory serving as a setting content storage means for storing the contents of the control channel set by the setting switch 35.

On the other hand, in the wireless telephone 4 of the cordless telephone device according to the embodiment of the present invention, 50 is a setting switch as a selection content setting manual means for setting the contents of control channels that can be selected for each wireless telephone 4; Reference numeral 51 denotes a control channel memory serving as a setting content storage means for storing the contents of the control channel set by the setting switch 50.

Next, the operation of this embodiment with the above configuration will be explained.

First, when installing this cordless telephone device, for each device, the contents of the control channels that can be selected in devices I to N are set on the connection device 3 of the device.
The setting switch 35 inputs the signal to the control circuit 3312.

In this case, when manually setting the settings from the setting switch 35 of the connection device 3 of the device, the control channel used by the device must be a single control channel (=to avoid imbalance, each connection device 3 has multiple control channels). It is assumed that the channels are set manually by distributing them evenly.

Then, the control circuit 33 of each connection device 3 receives the setting contents from the setting switch 35 and outputs the setting contents to the control channel memory 36 for self-memorization.

On the other hand, for each radio telephone 4, each radio telephone 4
0 for each connection device 3 corresponding to the setting switch 3.
The same contents as those manually set for the control circuit 33 from No. 5 are input and set from the setting switch 50 to the control circuit 44 as the contents of the control channel that can be selected by No. 4 of each radio telephone. is output from the control circuit 44 to the control channel memory 51 and stored therein.

In this state, when making a call from the wireless telephone 4 to the connection device 3, the following operations are performed.

During standby, the control circuit 33 of the connection device 3 is in a receiving state, and controls the radio circuit 32 to sequentially change the reception frequency to the control channel stored in the control channel memory 36 and to each communication channel. It switches to monitor the presence or absence of wireless input from the antenna 34 on these channels, including wireless communication from other cordless telephone devices, and then, based on the monitoring results, determines which of the plurality of communication channels is currently being used. Stores empty communication channels that have not been used.

Here, when the call key 45 of the wireless telephone 4 is pressed, the control circuit 44 of the wireless telephone 4 detects this, and the control circuit 44 further controls the wireless circuit 41 to send a signal requesting connection with the connection device 3. is transmitted from the antenna 49 to the connection device 3 using the control channel stored in the control channel memory 51 of the radio telephone 4 side.

The second transmitted connection request signal is transmitted to the wireless telephone 4 of the originator.
] Compatible with the connection device 3 side] Goyo chao, le memory 3
6, and is sent out using the same channel as the control channel that is monitored during standby by this wireless telephone 3, so that it is transmitted by the connecting device 3 corresponding to the wireless telephone 4. Received.

When the wireless circuit 32 of this connection device 3 receives a connection request signal from the wireless telephone 4 through the control channel, the II control of the control circuit 33 causes the information on the vacant communication Bouyannel stored in advance to be sent. , is outputted to the radio telephone 4 which is the source of the one-win continuation request signal using the above-mentioned control channel.

When the above signal transmission/reception is completed, the pair of 1 skin connection devices 3
and the radio telephone 4 transfer the mutual signal transmission channel from the control channel to the communication channel indicated by the information on the vacant communication channel from one control I of each control circuit 33 and 44, and hereinafter t & , outgoing calls and calls from the wireless telephone 4 to a fixed telephone network etc. are performed using this communication channel.

In addition, in the above-mentioned call from the wireless telephone 4,
Even if a plurality of radio telephones 4 make calls simultaneously, each radio telephone 4 sends out a connection request signal using the control channel stored in the control channel memory 51. It is possible to reduce the occurrence of mutual connection errors due to contention between the 'FE L's on a single control channel, and to effectively use the limited control channels at a plurality of locations.

On the other hand, in the case of an incoming call to the wireless telephone 4, the incoming call signal from the fixed telephone network etc. is received by the telephone interface circuit 31 of the connecting device 3 via the telephone line 1 and the main device 2, and control is performed based on this. The circuit 33 sends a signal requesting an incoming call connection and information on the vacant communication channel stored in advance to the receiving wireless telephone 4 using the control channel stored in the control channel memory 36. Output against.

Then, the destination wireless telephone 4 in the standby state is set to the same control channel as the content stored in the control channel memory 36 of the connection device 3, which is stored in the control channel memory 51. After receiving the incoming connection request signal and the information on the free communication channel from the connection device 3 and recognizing the free communication channel frequency, the connection confirmation signal is output to the connection device 3 using the same control channel as when receiving the signal.

When the above signal transmission/reception is completed, the pair of connection devices 3 and radio telephones 4 change their mutual signal transmission channels from the control channel to the information of the vacant communication channel under the control of their respective control circuits 33 and 44. The wireless telephone 4 moves to the indicated communication channel and performs a connection operation.
On the side, a ringer 48 rings for an incoming call.

In addition, when receiving a call to the wireless telephone 4 as described above, even if calls are made to multiple wireless telephones 4 at the same time, each connection device 3 controls the Since the connection request signal is sent using the control channel stored in the control channel memory 36, it is possible to reduce the occurrence of connection errors between multiple devices due to contention over a single control channel. , limited control channels can be used effectively in multiple locations.

Effects of the Invention As described above, according to the present invention, each of the plurality of wireless telephones and the plurality of connection devices in one-to-one correspondence with each of the plurality of wireless telephones has a connecting device and a wireless telephone that are paired with each other. A selection content setting input means for manually setting the contents of selectable control channels for each pair, and a setting content storage means for storing the setting content manually inputted from the selection content setting manual means, are provided. The control channel to be used between the connecting device and the wireless telephone is selected from among the control channels stored in the setting storage means of each connecting device and each wireless telephone. The content of channels that can be used among multiple control channels can be set for each radio telephone and wireless telephone. Reduce connection errors,
Limited control channels can be used effectively with multiple connection devices and radiotelephone sets.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a specific configuration of a connecting device and a wireless telephone in a cordless telephone device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a schematic configuration of an in-shell cordless telephone device. , FIG. 3 is a block diagram showing a specific configuration of a connecting device and a wireless telephone in a conventional cordless telephone device. 3... Connection device, 34... Setting switch, 35...
- Control channel memory, 4... Wireless telephone, 50.
... Setting switch, 51... Control channel memory. Name of agent: Patent attorney Shige Awano Takashi Idiot?

Claims (1)

[Claims] a plurality of wireless telephones, and one each of the plurality of wireless telephones;
Selection content setting input means for setting and inputting the contents of a selectable control channel for each pair of a pair of connection device and wireless telephone to each of a plurality of connection devices corresponding to one pair; A setting content storage means for storing setting contents inputted from the setting input means is provided, and the control channel used between the pair of connecting devices and the wireless telephone is stored in the setting contents of each connecting device and each wireless telephone. A cordless telephone device in which a control channel is selected from among control channels stored in a storage means.