JP4189966B2 - Communication device and method for cordless telephone and program - Google Patents

Description

  The present invention relates to a communication device for a cordless telephone including a parent device connected to a telephone line and a child device connected wirelessly thereto, and in particular, when the child device and the parent device are connected, TECHNICAL FIELD The present invention relates to a cordless telephone communication apparatus and method, and a program, which are improved in a reception-only machine for receiving information from a machine.

  A cordless phone is equipped with a “base unit” connected to a public telephone line and a “slave unit” used as a handset. By connecting between the “base unit” and the “slave unit” wirelessly, This is a telephone capable of making / receiving calls and calls. At present, digital cordless telephones are in widespread use for reasons such as confidentiality of calls and high sound quality.

  There are various standards for such cordless telephones, but there are certain restrictions on the number of slave units that can be connected to the master unit when a 1-to-N call is made between the master unit and the slave units. For example, in the case of a TDMA-TDD system which is a general multiplexing system, a frame obtained by dividing a specific frequency is further divided into a plurality of slots, and each uplink between the parent device and the plurality of child devices is divided. The radio channel assigned to the downlink is used. That is, since the number of bidirectional wireless channels that can be set is limited, the number of slave units that can be used is also limited (see Patent Document 1).

Therefore, in order to secure more communication means with a limited number of slave units, a dedicated reception device is added only for receiving information transmitted from the master unit side. This dedicated reception device can receive the parent device transmission channel for the child device connected to the parent device in the same manner as the child device, but cannot perform transmission. Accordingly, although different from a general slave unit, this makes it possible to secure more than the number of slave units as the communication means from the master unit.
JP-A-8-331648

  However, in the prior art as described above, in order for the reception-only device to receive using the transmission channel from the parent device, it is assumed that one of the child devices is connected to the parent device. . For this reason, when the parent device is not connected to any of the child devices, the reception-only device cannot receive information from the parent device and cannot function as a communication means. Therefore, the use of a conventional reception-only device for a cordless telephone has been very limited.

  The present invention has been proposed to solve the above-described problems of the prior art, and receives information from a parent device regardless of whether or not a child device is connected to the parent device. An object of the present invention is to provide a cordless telephone communication device, method, and program capable of ensuring a large number of communication means exceeding the limit number of handset units.

In order to achieve the above object, the invention of claim 1 includes a plurality of commanding units each having a receiving unit capable of receiving information wirelessly from a parent device connected to the child device by a wireless channel. In the cordless telephone communication apparatus, the at least one commander includes a connection information determination unit that determines that information related to the connection between the child device and the parent device has been received, and the connection information determination unit, so that the child device and the parent device When it is determined that the information related to the connection is received, the receiving unit causes the receiving unit to receive information transmitted from the parent device, and the connection information determining unit connects the child device to the parent device. When it is determined not to receive information on the connection, the connection control unit that establishes a connection capable of transmitting and receiving information to the parent device, and the connection information determination unit during connection with the parent device, Receiving information about connection with base unit If it is determined that, the connection control unit, anda cancellation instruction section for releasing the connection between the base unit, the connection control unit in at least one受令machine, establishes a connection with the master unit In this case, the receiving unit of the other commander is provided so as to be able to receive information transmitted from the parent machine.

The invention of claim 3 captures the invention of claim 1 from the viewpoint of a method, and a master unit in which computers or electronic circuits of a plurality of receivers are connected to a slave unit by a wireless channel In the communication method for a cordless telephone that receives information wirelessly, a step of determining whether or not a computer or electronic circuit included in at least one receiver has received information related to the connection between the slave unit and the master unit; When it is determined that information related to the connection between the slave unit and the master unit has been received, and when it is determined not to receive information related to the connection between the slave unit and the master unit when receiving information transmitted from the master unit Establishing a connection that can send / receive information to / from the parent device, and connecting to the parent device when it is determined that information related to the connection between the child device and the parent device has been received during the connection with the parent device. To cancel Tsu includes a flop, a computer or an electronic circuit having at least one受令machine is, when establishing a connection with the master unit, a computer or electronic circuits other受令machine has been transmitted from the master unit Receiving the information.

The invention of claim 5 captures the inventions of claims 1 and 3 from the viewpoint of a computer program, and is connected to a slave unit through a wireless channel by controlling a computer included in a plurality of receivers. In a cordless telephone communication program for receiving information wirelessly from a parent device, a computer having at least one commander determines whether or not information related to the connection between the child device and the parent device has been received, When it is determined that the information about the connection between the slave unit and the master unit has been received, the information from the master unit is received, and when it is determined that the information about the connection between the slave unit and the master unit is not received, Establish a connection that can send and receive information to the machine, and if it is determined that information about the connection between the child machine and the parent machine has been received while connected to the parent machine, release the connection with the parent machine , at least In both cases, when a computer included in one commander establishes a connection with the master, the computer included in the other commander receives information transmitted from the master.

In the inventions of claims 1, 3 and 5 as described above, when the slave unit and the master unit are connected, information from the master unit can be received and the slave unit and the master unit are connected. Even if it is not, you can establish a connection with the main unit and receive information, so you can avoid being unable to contact due to the inability to use, and always secure more than the limit number of slave units It becomes possible.

Further, when the slave unit and the master unit are connected, the connection with the master unit is released, so that the original function of the slave unit is not impaired. Even when either mow, it is possible to receive information from the conventional as well as the master unit, the function as communication means is not lost.

According to a second aspect of the invention, the cordless telephone communication system according to claim 1, at least one受令machine, by the connection information determination unit, is determined not to receive the information about the connection between the handset and the base unit From the waiting time storage unit that stores the waiting time until the connection control unit establishes the connection, and the connection information determination unit, it is determined that the information about the connection between the child device and the parent device is not received, A waiting time determining unit that causes the connection control unit to establish a connection with a parent device when it is determined that the waiting time has elapsed.

The invention of claim 4 captures the invention of claim 2 from the viewpoint of the method. In the communication method for a cordless telephone set of claim 3 , the computer or electronic circuit of at least one receiver has a slave unit. Storing the waiting time until the connection with the parent device is established from the state where the information regarding the connection between the child device and the parent device is not received, and the waiting time without receiving the information regarding the connection between the child device and the parent device. And a step of establishing a connection with the parent device when it is determined that the waiting time has elapsed.

The invention of claim 6 captures the inventions of claims 2 and 4 from the viewpoint of a computer program. In the communication program for a cordless telephone set of claim 5 , at least one receiver has a computer with a slave unit. The waiting time until the connection with the parent device is established from the state of not receiving the information on the connection between the child device and the parent device is stored, and the waiting time has elapsed without receiving the information on the connection between the child device and the parent device. It is determined whether or not the waiting time has elapsed, and when it is determined that the waiting time has elapsed, a connection with the parent device is established.

In the inventions of claims 2, 4, and 6 as described above, even when there is no connection between the child device and the parent device, the connection with the parent device is performed after a certain waiting time elapses. Can be prevented from being unnecessarily increased.

  According to the present invention, it is possible to receive information from the parent device regardless of whether or not the child device is connected to the parent device, and to secure a large number of communication means exceeding the limit number of child devices. A telephone communication device and method, and a program can be provided.

Hereinafter, the best mode (embodiment) for carrying out the present invention will be described with reference to the drawings.
[Configuration of the embodiment]
First, the configuration of the present embodiment will be described. That is, as shown in FIG. 1, the commander 1 that is the communication device of the present embodiment receives the channel if the slave unit 3 is connected to the master unit 2, and receives the channel from the master unit 2. When the handset 3 is not connected, it has a function capable of being directly connected to the base unit 2 like the handset 3.

  As shown in the functional block diagram of FIG. 2, the commander 1 includes a transmission unit 10, a reception unit 11, a frequency generation unit 12, a storage unit 13, an input unit 14, an output unit 15, a display unit 16, and a control unit 17. However, it is configured by being connected by a bus capable of transmitting and receiving control signals and data. The commander 1 is configured to be supplied with driving power via a power supply circuit 18 connected to a power supply. The transmitting unit 10 and the receiving unit 11 are means for transmitting and receiving audio signals and control signals to and from the master unit, and are connected to an antenna A for transmitting and receiving radio waves.

  The frequency generation unit 12 is a unit that generates a frequency necessary for transmission / reception with the base unit. The storage unit 13 is a means for storing an identification code (ID) for connection to the parent device, information on the parent device that can be connected, a standby time to be described later, and the like. The input unit 14 is a means for inputting signals necessary for the operation of the commander 1 and calls, such as a transmission switch, an ON / OFF switch, a volume, a microphone, and the like. The output unit 15 is a means for outputting a signal necessary for a call, such as a speaker, a headphone, and an earphone. The display unit 16 is means for displaying a connection state, an ON / OFF state, etc. on an LCD, an LED, or the like.

  The control unit 17 is means for controlling each unit by realizing the functional blocks shown in FIG. That is, as shown in FIG. 3, the control unit 17 functions as a connection information determination unit 17A, a reception instruction unit 17B, a connection control unit 17C, a release instruction unit 17D, and a waiting time determination unit 17E. The connection information determination unit 17A includes information related to the connection between the child device 3 and the parent device 2, for example, a connection request from the child device 3 to the parent device 2 or that the child device 3 and the parent device 2 are connected. It is a means to determine the presence or absence of reception about the information to show. The reception instruction unit 17B causes the reception unit 11 to receive information transmitted from the parent device 2 when the connection information determination unit 17A determines that the information related to the connection between the child device 3 and the parent device 2 has been received. Means.

  When the connection control unit 17C determines that the connection information determination unit 17A does not receive information related to the connection between the child device 3 and the parent device 2, the connection control unit 17C outputs a connection request with the parent device 2 by transmitting the ID. This is means for establishing a connection with the parent device 2. That is, when the handset 3 and the base unit 2 are not connected, or when there is no connection request from the handset 3 to the base unit 2, the base unit is connected using the channel for connection with the handset 3. Connect with 2. When the connection control unit 17C establishes a connection with the parent device 2, the release instruction unit 17D determines that the connection information determination unit 17A has received information related to the connection between the child device 3 and the parent device 2. In this case, the connection control unit 17C is instructed to release the connection with the base unit 2. The waiting time determining unit 17E has not received information related to the connection between the child device 3 and the parent device 2 by the connection information determining unit 17A, and the time oscillated by the built-in timer has passed a preset waiting time. Is a means for instructing the connection information determination unit 17A to perform the connection process.

  Such an instruction machine 1 typically implements the above virtual functional block by controlling computer hardware by a program. Various hardware configurations are possible, such as a so-called chip that realizes each function and its peripheral circuit, or a system LSI that integrates a plurality of functions, and is not limited to a specific circuit. Such a program and a memory, a hard disk, a CD-ROM, a DVD-ROM, and other various recording media that record the program are each an aspect of the present invention. Therefore, for example, by installing a program in a portable information terminal such as a PDA or PHS, it is possible to realize the receiver 1 of the present embodiment as one of its functions.

  The master unit 2 and the slave unit 3 are devices that can be connected and talked using a transmission / reception channel assigned in advance as general cordless telephones, and are basically the same as known technologies. Therefore, the details are omitted. However, in the commanding device 1 according to the present embodiment, when the handset 3 is not connected, a transmission request is made in the same manner as the handset 3 by making a connection request to the base unit 2 using the ID. The base unit 2 side is configured so as to be possible.

[Operation of the embodiment]
The processing procedure according to the present embodiment as described above will be described with reference to the flowchart of FIG. Note that basic processing for wireless transmission / reception of audio signals, such as multiplexing of transmission / reception signals, modulation / demodulation, extraction of control signals and audio signals from transmission / reception signals, conversion of audio signals, etc. are well known. Since any technique can be applied, the description is omitted.

  In other words, when the power supply is turned on and the commander 1 is operated, after the initial setting is performed (step 401), the reception standby state, that is, the connection state between the master unit 2 and the slave unit 3 is being monitored. (Step 402). During this monitoring, when it is determined that the connection information determination unit 17A has received information indicating that it is connected to the slave unit 3 from the control channel transmitted by the master unit 2, or from the slave unit 3 to the master unit 2 is received (step 403), the reception instructing unit 17B receives information from the transmission channel of the parent device 2 with respect to the child device 3 as in the conventional case. The unit 11 is instructed (step 404). Thereby, the commander 1 functions as a reception-only device. Furthermore, when it is determined that the connection information determination unit 17A has received information indicating that it is not connected to the child device 3 from the control channel transmitted by the parent device 2, or when connection state information is no longer received (step 405) The reception instruction unit 17B instructs the reception unit 11 to perform reception end processing (step 406), and shifts to a reception standby state (step 402).

  Next, in the reception standby state as described above (step 402), when information indicating the connection state between the parent device 2 and the child device 3 is not received, or a connection request from the child device 3 to the parent device 2 is not received. If so (step 403), the elapsed time is counted based on a built-in timer (step 407). And when waiting time set up beforehand passes and waiting time judging part 17E judges as timeout (Step 408), since connection information judging part 17A judges that cordless handset 3 is unconnected, The connection control unit 17C transmits a connection request including an ID to the parent device 2 in the same manner as the child device 3 (step 409). The connection control unit 17C waits for a connection response from the parent device 2 (step 410), and when receiving the response (step 411), establishes communication using the channel and transmits / receives information in the same manner as the child device 3. (Step 412).

  At this time, if another commander 1 is present, reception can be performed from the transmission channel of the master unit 2 with respect to the commander 1 that has established communication with the master unit 2. In addition, during such communication, when the connection information determination unit 17A determines that information indicating that the handset 3 and the base unit 2 are connected is received, or the connection from the handset 3 to the base unit 2 If it is determined that the request has been received (step 413), the connection control unit 17C disconnects the connection with the parent device 2 in accordance with an instruction from the release instruction unit 17D (step 414). In the same manner as described above, information using the transmission channel from the parent device 2 is received with respect to the child device 3 connected to the parent device 2 (step 404). The processing after step 405 is the same as described above.

[Effect of the embodiment]
According to the present embodiment as described above, even if the slave unit 3 is not connected to the master unit 2, the communication with the master unit 2 can be actively secured from the commanding unit 1 side, so that it cannot be used. It is possible to eliminate the state in which contact cannot be made. Accordingly, even if there are a large number of points where only the commander 1 is installed due to the restriction on the number of slave units 3, information transmission to all the points will not be interrupted, and there will always be a communication means exceeding the limit on the number of slave units 3. It can be secured.

  Further, when the child device 3 is connected to the parent device 2, the connection between the commander device 1 and the parent device 2 is automatically released, so that the original function of the child device 3 is not impaired. Even in such a case, since the information from the parent device 2 can be received, the function as the contact means is not interrupted. Further, when there is no connection between the slave unit 3 and the master unit 2, the standby unit 1 and the master unit 2 are connected after the waiting time set in advance elapses. It is possible to prevent an unnecessarily high frequency of switching with the machine 1.

[Other Embodiments]
The present invention is not limited to the embodiment as described above. In other words, the present invention solves the problems associated with cordless telephones in which the number of handset units is limited. Therefore, the standards for the frequency band to be used, the multiplexing method, the multiplexing number, the modulation method, the voice coding method, etc. It is up to you what you adopt. For example, as a multiplexing method for multiple access of a plurality of slave units or reception units, any one that can be used at present or in the future can be applied. Therefore, the present invention is not limited to the popular TDMA-TDD, and other multiplexing schemes such as SCPC-TDD are also applicable. The number of channels that can be used as slave units is also arbitrary, and the number of slave units can be increased or decreased accordingly.

  The number of machines can be freely increased or decreased. When there are a plurality of commanding devices, it is also possible to freely set which commanding device the commanding device that detects the connection of the slave unit and establishes the connection with the master unit. It may be set statically so that only one specific unit performs the processing in advance, or a specific receiving unit such as one that is closest to the base unit or one that is not carried (moved), etc. It may be set dynamically so that such processing is performed by selecting the command machine according to the situation. It may be set such that a plurality of commanders simultaneously request connection and the earliest commander establishes a connection. It is free to make the commander portable or install.

  Further, the present invention is not limited to digital cordless telephones, but can also be applied to analog cordless telephones with a large limit on the number of slave units. The standby time can be set freely, and an appropriate value may be set so that the unusable time of the commander does not become long and the frequency of switching with the slave is not excessive. The ID used between the parent device, the child device, and the receiving device is not limited to a specific one. The user interface such as the input unit, the output unit, and the display unit can be freely set. For example, information on whether or not the commander is connected and whether or not the slave is connected may be displayed by blinking of an LED or the like, and information to that effect may be displayed on a display such as an LCD. It may be clearly indicated by displaying etc.

It is explanatory drawing which shows the relationship between the receiving machine of this invention, a main | base station, and a subunit | mobile_unit. It is a functional block diagram which shows one Embodiment of this invention. It is a functional block diagram which shows the control part in embodiment of FIG. It is a flowchart which shows the flow of a process of the receiving machine in embodiment of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Commander 2 ... Master unit 3 ... Slave unit 10 ... Transmission unit 11 ... Reception unit 12 ... Frequency generation unit 13 ... Storage unit 14 ... Input unit 15 ... Output unit 16 ... Display unit 17 ... Control unit 17c ... Connection control Unit 17A ... Connection information determination unit 17B ... Reception instruction unit 17C ... Connection control unit 17D ... Release instruction unit 17E ... Time determination unit 18 ... Power supply circuit

Claims (6)

In a cordless telephone communication device including a plurality of receivers having a receiving unit capable of receiving information wirelessly from a parent device connected to a child device by a wireless channel,
At least one machine is
A connection information determination unit that determines that information related to the connection between the child device and the parent device has been received;
When the connection information determination unit determines that information related to the connection between the child device and the parent device has been received, the reception instruction unit causes the reception unit to receive information transmitted from the parent device;
A connection control unit that establishes a connection capable of transmitting and receiving information to and from the base unit when it is determined by the connection information determination unit that the information about the connection between the base unit and the base unit is not received;
When the connection information determination unit determines that the information related to the connection between the child device and the parent device is received during connection with the parent device, the connection control unit causes the connection control unit to release the connection with the parent device. A release instruction section;
Have
When the connection control unit in at least one commander establishes a connection with the master unit, the receivers of other commanders are provided so that they can receive information transmitted from the master unit. A cordless telephone communication device. At least one machine is
A waiting time storage unit that stores a waiting time until the connection control unit establishes a connection after it is determined that the connection information determination unit does not receive information regarding the connection between the child device and the parent device,
When it is determined by the connection information determination unit that information related to the connection between the child device and the parent device is not received, the connection control unit establishes a connection with the parent device when it is determined that the waiting time has elapsed. A waiting time determination unit;
The communication device for a cordless telephone according to claim 1, comprising: In a communication method for a cordless telephone, in which a computer or an electronic circuit included in a plurality of receivers receives information wirelessly from a parent device connected to the child device by a wireless channel.
Determining whether a computer or an electronic circuit included in at least one receiver has received information on the connection between the slave unit and the master unit; and
A step of receiving information transmitted from the parent device when it is determined that information related to the connection between the child device and the parent device has been received;
Establishing a connection capable of transmitting / receiving information to / from the master unit when it is determined that the information about the connection between the slave unit and the master unit is not received;
When it is determined that information related to the connection between the child device and the parent device has been received during the connection with the parent device, the step of releasing the connection with the parent device;
Including
When a computer or electronic circuit possessed by at least one commander establishes a connection with the master unit, the computer or electronic circuit possessed by another commander receives the information transmitted from the master unit. A communication method for a cordless telephone, comprising: At least one receiver has a computer or electronic circuit
Storing a waiting time until a connection with the parent device is established from a state in which information on the connection between the child device and the parent device is not received;
Determining whether or not the waiting time has elapsed in a state in which the information regarding the connection between the slave and the master is not received;
When it is determined that the waiting time has elapsed, establishing a connection with the base unit;
4. The communication method for a cordless telephone according to claim 3 , further comprising: In a communication program for a cordless telephone that receives information wirelessly from a parent device connected to a child device by a wireless channel by controlling a computer included in a plurality of commanders,
At least one machine has a computer
Determine whether or not the information about the connection between the slave unit and the master unit has been received,
When it is determined that the information about the connection between the slave unit and the master unit has been received, the information from the master unit is received,
If it is determined not to receive information about the connection between the slave unit and the master unit, establish a connection that can send and receive information to the master unit,
When it is determined that information related to the connection between the slave unit and the master unit has been received during connection with the master unit, the connection with the master unit is released.
A cordless telephone characterized in that when a computer of at least one commander establishes a connection with the master unit, the computer of the other commander receives information transmitted from the master unit Communication program. At least one machine has a computer
Store the waiting time until the connection with the master unit is established after not receiving the information about the connection between the slave unit and the master unit.
In a state where the information regarding the connection between the slave unit and the master unit is not received, it is determined whether or not the waiting time has elapsed,
6. The communication program for a cordless telephone according to claim 5, wherein when it is determined that the waiting time has elapsed, a connection with the parent device is established.

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