JPH098936A - Radio communication system - Google Patents

Abstract

PURPOSE: To allow a slave telephone set to inquire about a communication terminal equipment by allowing a master set to inform a state stored in a storage means to the slave set based on a request from the slave set. CONSTITUTION: When the user of a slave telephone set #1 enters a code requesting a state of other slave set #4 to a master set #0, a state request is sent to the master set #0 (S8). The master set #0 sends a state of the slave facsimile equipment #4 and a newest communication management recording to the slave telephone set #1, which makes a reply (S9). Upon the receipt of the state reply from the master set #0, the slave telephone set #1 displays the state of the slave facsimile equipment #4 and the newest communication management recording onto an LCD. Since the slave set #4 reports its state change to the master set #0 sequentially (S1-S7), the master set #0 usually stores the newest state of the slave set #4. Similarly a state of an optional slave set is quickly recognized among plural slave sets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system composed of a master unit connected to a wired telephone line and a plurality of slave units connected to the master unit via a wireless line.

[0002]

2. Description of the Related Art In recent years, in addition to mobile communication services such as mobile phones and cordless phones, PHS (Personal Handy-Ph
A new mobile communication service called one system) is being developed. A PHS terminal (slave unit) can communicate outdoors via an outdoor base station like a mobile phone, and indoors via an indoor base station (parent unit) connected to a public network like a cordless phone. Can communicate. PH
S is not suitable for high-speed movement, but the transmission method is TDMA
/ TDD (Time Division Multiple Access / Time Divi
sion Duplex) Since it uses a digital system, it has good line quality and is suitable for transmitting digital data. Therefore,
Data communication such as facsimile communication can be performed at a higher data transmission speed than that of an analog cordless telephone.

[0003]

There is provided a wireless communication system in which not only a telephone but also a communication terminal device such as a facsimile device can be provided in a child device wirelessly connected to a parent device. In offices and shops, the number of installed slave communication terminal devices is smaller than that of a slave phone, and a small number of communication terminal devices may be shared by many people. For this reason, the desk and the communication terminal device are installed away from each other, and the communication terminal device is ready to use or is in use (communication).
It is necessary to go to the installation site one by one in order to know if it is. Further, even if the recording paper is used up, there are no people around, so that it may not be immediately replenished and the communication opportunity may be missed. The wireless communication system of the present invention eliminates such inconvenience, and provides a wireless communication system capable of inquiring about the state of a communication terminal device from a handset phone.

[0004]

In order to solve the above-mentioned problems, a wireless communication system of the present invention comprises a master unit connected to a wired telephone line and a plurality of slave units connected to the master unit via a wireless line. In the wireless communication system consisting of
Storage means for storing the state of the slave unit, means for updating the stored in the storage unit based on a report from the slave unit,
A unit for notifying the slave unit of the status stored in the storage unit based on a request from the slave unit, wherein the slave unit reports the status of the slave unit itself to the master unit; And a means for requesting a status, and a means for outputting the status notified from the master unit.

Further, in a wireless communication system comprising a master unit connected to a wired telephone line and a plurality of slave units connected to the master unit by a wireless line, the master unit responds to a request from the slave unit. Based on the status of the other child device based on, and means for notifying the child device, the child device, means for requesting the state of the other child device to the parent device, other notified from the parent device And means for outputting the state of the child device.

[0006]

The wireless communication system of the present invention comprises a master unit connected to a wired telephone line and a plurality of slave units connected to the master unit via a wireless line. The master unit includes a storage unit that stores the status of the slave unit, and updates the status of the slave unit stored in the storage unit based on a report from the slave unit. If there is a request from the slave unit, the slave unit is notified of the state of the slave unit stored in the storage means. The slave unit reports to the master unit if there is a change in the status of the slave unit, requests the master unit for the status of other slave units, and outputs the status of the slave unit notified from the master unit to the LCD or the like. To do.

When the slave unit requests the status of another slave unit to the master unit, the master unit inquires the status of the other slave unit based on the request from the slave unit and notifies the slave unit of the status. The child device outputs the state notified from the parent device to the LCD or the like.

[0008]

EXAMPLES Examples of the present invention will be described. The configuration of the wireless communication system of the present invention is shown in FIG. 2 for base unit # 0
The PSTN line of the line is connected, and the slave units # 1 to # 8 are connected to this master unit # 0 and the wireless line. Cordless handset#
1 to # 3 and # 5 to # 7 are telephones. Also, # 4, #
Reference numeral 8 denotes a communication terminal device, which is a facsimile device in this embodiment, but it is also possible to use a personal computer or the like having a communication function in addition to this.

The configuration of the master unit # 0 is shown in FIG. NCU1 controls connection and release of lines L1 and L2. It also controls the connection and release of the handset 2 to the lines L1 and L2. A
The DPCM codec 3 uses ADPCM (adaptive differential pulse code modulation) to encode a signal coming from a line and to decode a signal received from a slave unit via a wireless line. The channel codec 4 creates data conforming to the TDMA / TDD system and extracts necessary data from the data received from the slave. The modulator 5 modulates the data transmitted to the slave by the π / 4 shift QPSK method, and the demodulator 6 demodulates the data received from the slave by the same method.
The RF unit 7 transmits the signal input from the modulation unit 5 from the antenna 8 to the slave unit, and outputs the signal received from the antenna 8 to the demodulation unit 6.

Further, the master unit # 0 stores the CPU 9 for controlling the above-mentioned units and the RO storing the programs necessary for the control.
Equipped with M10. Further, the RAM 11 not only temporarily stores data required for control, but also records the slave unit status memory 11A, which is an area for storing the “state” of the slave units # 1 to # 8, and communication management. The communication management recording memory 11B is provided.

This "state" means that each of the slave units # 1 to # 8
"Standby", which indicates that communication is possible, line L
1, “L2 is used to communicate with the partner station”, “External communication”, “External communication”, indicating that the slaves are communicating with each other via the master # 0, Master # There is "out of service" or the like indicating that the device is out of the service range of 0 or the power is off. Further, the slave facsimile machines # 4, #
8 includes "recording paper request" for requesting filling of a new recording paper with no recording paper left, "jam" for document jam of originals or recording paper, "communication reservation" for automatically making a call after a predetermined time.
Etc.

The communication management recording memory 11B includes lines L1,
Up to 50 results of communication using L2 can be recorded. The records of one communication include the cordless handset number, communication start time,
The communication time, the communication partner number, the communication mode (normal, fine, etc. in the case of a telephone call or a facsimile), and the number of documents, the communication result, etc. are recorded in the case of facsimile communication.

FIG. 3 shows the configuration of the handset phones # 1 to # 3 and # 5 to # 7. Reference numeral 21 is a speaker and 22 is a microphone. Reference numeral 23 is an ADPCM codec, which decodes the data received from the wireless line by the ADPCM system and outputs it from the speaker 21. Also, the voice input from the microphone 22 is encoded by the same method. The channel codec 24 creates data conforming to the TDMA / TDD system and extracts necessary data from the received data. The modulator 25 modulates the data transmitted to the base unit by the π / 4 shift QPSK system, and the demodulator 26 demodulates the data received from the base unit by the same system. The RF unit 27 transmits the signal input from the modulation unit 25 from the antenna 28 to the master unit, and outputs the signal received from the antenna 28 to the demodulation unit 26.

Further, the slave units # 1 to # 3 and # 5 to 7 are provided for temporarily storing the CPU 29 for controlling each of the above-mentioned units, the ROM 30 storing the programs required for the control, and the data required for the control. It is provided with a RAM 31 used, a keypad 32 for inputting a telephone number, etc., and an LCD 33 for displaying the input telephone number and the state of the slave facsimile machine.

FIG. 4 shows the configuration of the slave facsimile machines # 4 and # 8. A reading unit 41 binarizes an image signal obtained by scanning an original with a CCD or the like. A recording unit 42 records image data on recording paper. 57 is FAX
The codec is a codec and performs redundancy compression encoding of the image data binarized by the reading unit 41 and decodes the received encoded image data, and outputs the encoded image data to the recording unit 42. The modem 58 modulates the data coded by the FAX codec 57 into a deemed voice, and demodulates the deemed voice received from the master unit. Four
Reference numeral 3 is an ADPCM codec, which encodes the deemed voice data input from the FAX modem 58 by the ADPCM system. Also, the deemed voice data received from the wireless line is decoded by the same method and output to the FAX modem 48. The channel codec 44 creates data compatible with the TDMA / TDD system and extracts necessary data from the received data. The modulator 45 modulates the data transmitted to the master unit by the π / 4 shift QPSK method, and the demodulator 46 demodulates the data received from the master unit by the same method. The RF unit 47 transmits the signal input from the modulator 45 from the antenna 48 to the master unit, and outputs the signal received from the antenna 48 to the demodulator 46.

Further, the slave facsimile machines # 4 and # 8
Among the above-mentioned units, ADPCM codec 43, channel codec 44 and FAX codec 57,
The FAX modem 58 has CPUs 49, 54 and ROMs 50, 55 storing programs necessary for control, respectively.
RAMs 51 and 56 used for temporarily storing data required for control are connected. Image data is also stored in the RAM 56. In addition, a keypad 52 for inputting a telephone number and the like, and an LCD 53 for displaying the state of the input telephone number are provided.

In the above-described wireless communication system composed of the master unit # 0 and the slave units # 1 to # 8, the master unit # 0 is always
A case of storing the latest states of the child devices # 1 to # 8 (first embodiment) will be described with reference to FIG.

When the slave unit facsimile apparatus # 4 becomes able to receive the control channel from the master unit # 0 when the power is turned on or the service area of the master unit # 0 is restored, and the like, the master unit # 0 can be received. It is reported to # 0 that it is "standby" (S1). Upon receiving the report indicating "standby" from the slave machine # 4, the master machine # 0 updates the slave machine status memory 11A in the RAM 11. If the recording paper of the slave facsimile machine # 4 is exhausted, a "recording paper request" is reported (S
2) When the recording paper is filled, the fact that the printer is "standby" is reported to the master device # 0 (S3). Each time, the master unit # 0 updates the slave unit status memory 11A.

When the handset facsimile device # 4 requests a call, the handset # 0 sets the handset status memory 11A to "call request" (S4). When the communication with the partner station is continuously started, the master unit # 0 sets the slave unit status memory 11A to "in communication". The slave facsimile device # 4 receives the communication result (communication start time, communication time, communication mode, communication partner number, number of originals, end state, etc.) and the fact that it becomes "standby" again as the communication ends. Report to machine # 0 (S
5). The master unit # 0 updates the slave unit status memory 11A and records the communication result in the communication management recording memory 11B. In addition, even if the slave facsimile device # 4 requests a call (S6), if there is no response from the partner station, the line L1,
If both L2s are in use, the main unit # 0 is informed that it is in "standby" but is in the "communication reserved state" in which a call is made again after a predetermined time (S7). Similarly, the states of the other handset telephones and handset facsimile machines are stored in the handset status memory 11A of the base unit # 0.

Next, the slave unit status memory 1 of the master unit # 0
Procedure for inquiring the status of each child device stored in 1A from the child device, for example, from the handset phone # 1 to the handset facsimile device #
A procedure for inquiring about the status of No. 4 will be described. When the user of the cordless handset # 1 inputs a code (for example, * 01) requesting the state of another cordless handset to the cordless handset # 0 from the keypad 32, the cordless handset number (04) is input. , A status request is sent from the handset phone # 1 to the base device # 0 through the wireless line (S8). When the master unit # 0 recognizes the status request code (* 0104) received from the slave unit phone # 1, it reads the status of the slave unit facsimile machine # 4 read from the slave unit status memory 11A and the communication management record memory 11B. The latest communication management record of the handset facsimile device # 4 is sent to the handset phone # 1 and a status response is sent (S
9). Upon receiving the status response from the master unit # 0, the slave unit phone # 1 displays the status of the slave unit # 4 and the latest communication management record on the LCD 33.

As described above, since the slave units # 1 to # 8 report the state change to the master unit # 0 one by one, the master unit # 0 always updates the latest state of the slave units # 1 to # 8. The status can be stored, and the status of any slave can be quickly known from any slave. In the case of a communication terminal such as a facsimile, the latest communication management record can be known.

Next, the master unit # 0 does not always store the latest states of the slave units # 1 to # 8, and the slave unit # 1 is required one by one according to the status request from the slave units # 1 to # 8. ~ When making an inquiry to # 8, especially from the handset phone # 1 to the handset facsimile device # 4
The case of inquiring about the state (2) will be described with reference to FIG.

FIG. 6A shows the most standard pattern. From the keypad 32, the user of the cordless handset # 1
When a code requesting the status of the designated slave unit (for example, * 01) and a code designating the slave unit (04) are input, the slave telephone set # 1 sends a status request to the master unit # 0 through the wireless line (S21). . When the master unit # 0 receives the status request from the slave unit # 1, it makes a status request to the designated slave unit # 4 (S2).
2). Upon receiving the status request from the master # 0, the slave facsimile # 4 receives its status ("standby", "recording paper request", "jam", etc.) at that time and the latest communication result. Is reported to base unit # 4 (S23). When the master unit # 0 receives the status response from the slave unit facsimile apparatus # 4, it transfers the status response to the slave unit phone # 1 (S24). When the handset phone # 1 receives the state response of the handset facsimile device # 4 from the base unit # 0, the state and the latest communication result are displayed on the LCD 33.

FIG. 6B shows a facsimile machine # 4 as a slave unit.
Is in communication using the line L1 or L2. The handset phone # 1 requests the state of the handset facsimile device # 4 from the base unit # 0 (S25). However, since the master unit # 0 can recognize that the slave unit facsimile apparatus # 4 is in communication, the slave unit facsimile apparatus # 4 sends "connecting"
Is reported (S26).

FIG. 6C shows a slave facsimile apparatus # 4.
This is the case when the power of the device is turned off or the device is outside the service area of the master device # 0. The cordless handset telephone # 1 requests the state of the cordless handset facsimile apparatus # 4 to the cordless handset # 0 (S2).
7). The master unit # 0 requests the status of the slave unit facsimile apparatus # 4 (S28), but since the response from the slave unit facsimile apparatus # 4 cannot be received even after a predetermined time elapses, the slave unit facsimile apparatus # 4 is again requested. Request status to S4 (S2
9, S30). When a response cannot be received from the slave facsimile machine # 4 even after repeating the predetermined number of times, the slave telephone # 1 is notified that the status of the slave facsimile machine # 4 is "out of service" (S31).

FIG. 6 (D) shows all of the slave facsimile machines (in this case, # 4 and # 8) from the slave telephone # 1.
Is the case of requesting the state of. When the user of the cordless handset # 1 inputs a code (for example, * 02) requesting the state of all the cordless handset facsimile devices from the keypad 32, the cordless handset telephone # 1 transfers to the master unit # 0 through the wireless line. It is sent (S32). When the master unit # 0 receives the status request from the slave unit # 1, it sequentially makes a status request to the slave unit facsimile apparatuses # 4 and # 8 (S33, S35). Upon receiving the status request from the master unit # 0, the slave facsimile machines # 4 and # 8 set their own statuses (“standby”, “recording paper request”, “jam”, etc.) at that time to the master unit. Report to # 4 (S34,
S36). When the master unit # 0 receives the report from the slave unit facsimile apparatus # 4, it transfers the report to the slave unit phone # 1 (S3).
7). When the handset phone # 1 receives the status response of the handset facsimile devices # 4 and # 8 from the base device # 0, it displays it on the LCD 33.

At the time when the slave unit requests the status of another slave unit,
Since the master unit inquires about the status of the requested slave unit and reports it to the slave unit, the slave unit status memory 11A of the master unit is unnecessary. In addition, the traffic on the wireless line can be reduced.

The above-mentioned master unit # 0 and slave unit facsimile apparatus #
Since Nos. 4 and # 8 use "deemed voice" to perform facsimile communication on the wireless line, the data transmission rate is about 4800 bps. "Deemed voice" on the wireless line
By directly sending the facsimile data to the wireless line without using, the speed can be increased to about 14400 bps. For this purpose, the FAX codec 57 and the channel codec 44 of the slave facsimile apparatus # 4 are connected, and the channel codec 4 and N of the master apparatus # 0 are connected.
A FAX modem may be provided between CU1. Also, PS
32 kbps by using the ISDN line instead of the TN line and connecting from the channel codec 4 of the base unit to the ISDN line via the ISDN interface.
The transmission speed of can be realized.

In the above embodiment, the state of other slave units and the like are determined by LC.
Although it is supposed to be displayed on D, it is equipped with a voice synthesis circuit,
By outputting the synthesized voice from the speaker, usability can be improved.

[0030]

INDUSTRIAL APPLICABILITY The wireless communication system of the present invention can be connected not only to a telephone set but also to a communication terminal device such as a facsimile device, so that the installation place of the communication terminal device is not restricted and the wireless communication system can be used easily. Is improved. Also, since the status of other slaves can be known from the slave, when using a communication terminal device such as a facsimile machine, it is possible to know the status of the device without going to the installation location of the device one by one. You can Furthermore, when communication such as facsimile is performed, the latest communication result can be known.

[Brief description of drawings]

FIG. 1 shows a configuration of a wireless communication system of the present invention.

FIG. 2 is a block diagram showing a configuration of a master unit that constitutes the wireless communication system of the present invention.

FIG. 3 is a block diagram showing a configuration of a handset telephone constituting a wireless communication system of the present invention.

FIG. 4 is a block diagram showing a configuration of a slave facsimile machine that constitutes the wireless communication system of the present invention.

FIG. 5 shows a first embodiment of the wireless communication system of the present invention.

FIG. 6 shows a second embodiment of the wireless communication system of the present invention.

[Explanation of symbols]

 # 0 base unit # 1 to # 3, # 5 to # 7 handset phone # 4, # 8 handset facsimile device 11A handset status memory

Claims (4)

[Claims] 1. A wireless communication system comprising a master unit connected to a wired telephone line and a plurality of slave units connected to the master unit via a wireless line, wherein the master unit stores a state of the slave unit. Storage means, means for updating the state stored in the storage means based on a report from the slave, and means for notifying the slave of the state stored in the storage based on a request from the slave. Wherein the slave unit includes means for reporting the status of the slave unit to the master unit, means for requesting a status to the master unit, and means for outputting the status notified from the master unit. Wireless communication system. 2. A wireless communication system comprising a master unit connected to a wired telephone line and a plurality of slave units connected to the master unit via a wireless line, wherein the master unit responds to a request from the slave unit. Based on the status of the other handset based on, comprises means for notifying the handset, the handset, means for requesting the state of the other handset to the base unit, other notified from the base unit A wireless communication system, comprising: a unit that outputs the state of the child device. 3. The wireless communication system according to claim 1, wherein at least one of the plurality of slaves has a facsimile communication function. 4. The wireless communication system according to claim 1, wherein the output unit of the slave unit is a liquid crystal display device.