JP2001298551A - Wireless telephone device and control method therefor - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To configure a master unit connected to a telephone line and a slave unit provided with an interface for accommodating a facsimile terminal, and perform communication between the master unit and the slave unit using a digital radio such as a PHS. Provided is a wireless telephone device that can perform facsimile communication at a higher communication speed than a communication speed conventionally realized by a “deemed voice” method in a wireless telephone device performed via a transmission path. A parent machine (a) has a parent machine facsimile modem 104 and a child machine (b) has a child machine facsimile modem 11.
2 is provided, and communication between the master unit and the slave unit via the wireless digital transmission path is performed using a signal modulated by a facsimile modem. By using a facsimile modem, ADP by conventional deemed voice communication
High-speed communication becomes possible as compared with the CM signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a master unit connected to a telephone line and a slave unit provided with an interface for accommodating a facsimile terminal. The communication between the master unit and the slave unit is performed by a digital radio transmission path. The present invention relates to a wireless telephone device performed via a telephone.

[0002]

2. Description of the Related Art Communication between a master unit and a slave unit is performed by a PHS (persistent).
Conventionally, when a facsimile (G3) is connected to a terminal interface unit of a slave unit of a wireless telephone device that performs digital wireless communication such as an ona1 handy-phone system via communication to communicate with another facsimile, a “deemed voice” is used. "Method was used.

[0003] In the "deemed voice" system, a signal from a facsimile modem is regarded as voice, and the signal is passed through a digital wireless communication unit via voice CODEC.

FIG. 21 shows a base unit 1701 of a conventional radio telephone apparatus when facsimile communication is performed by the "deemed voice" method.
FIG. 22 is a block diagram showing a configuration of (FIG. 21A) and a child device 1709 (FIG. 21B).

[0005] Reference numeral 1702 denotes a base unit control unit which is a control unit of the base unit 1701, 1703 denotes a base unit side memory, and 1704 denotes an ADP.
ADPCM CODEC for master unit that performs CM code decoding,
Reference numeral 1705 denotes a base unit side wireless transmission / reception unit, 1706 denotes a base unit side antenna, 1707 denotes a telephone green interface processing unit for performing interface processing of a telephone line 1708, and 1708 denotes a telephone line.

Reference numeral 1710 denotes a slave unit control unit which is a control unit of the slave unit 1709, 1711 denotes a slave side memory, and 1712 denotes an ADP.
ADPCM CODEC for the slave unit that performs CM code decoding,
Reference numeral 1713 denotes a handset side wireless transmission / reception unit, reference numeral 1714 denotes a handset side antenna, reference numeral 1715 denotes a terminal interface processing unit which accommodates a facsimile machine 1719, reference numeral 1716 denotes a dial button for inputting a dial when making a call, and reference numeral 1717 denotes a call button for inputting the start of a call. Reference numeral 1718 denotes a connection cable for connecting the slave unit 1709 and the facsimile 1719. 171
9 is a facsimile. Facsimile 1719 is G3
Meet the standard.

[0007] The telephone line 1708 is assumed to be an analog telephone line, but may be a digital line such as ISDN. Assuming that the ISDN basic interface is used as the telephone line 1708, the PCM encoding method is used as the audio encoding method.
It becomes a PCM-PCM converter.

[0008] A plurality of connection methods between the slave unit 1709 and the facsimile 1719 can be considered, but typical ones are shown below.

As a first method, there is a method of connecting to a microphone jack of the slave 1709. When connecting with a microphone jack, the terminal interface processing unit 1715 has a function of inputting sound from a microphone to the slave unit side ADPCM CODEC, and has a shape such that a microphone plug is inserted. The connection cable 1718 has a shape that can be inserted into a microphone jack on the side to be inserted into the slave unit 1709, the facsimile 1719 has a shape of a two-core modular jack for an analog telephone line, and a microphone output and an electrical connection between the analog telephone line. It has a function to perform a typical conversion.

As a second method, there is a method of connecting with an analog telephone line. When connecting with an analog telephone line, the terminal interface processing unit 1715 has a function on the network side of the analog telephone line, and the connection cable is a two-core modular cable for the analog telephone line.

As a third method, there is a method of connecting with a digital telephone line such as an ISDN basic interphase. IS
When connecting with the DN basic interface, the terminal interface processing unit 1715 has a network-side function of the ISDN basic interface, and the connection cable is an ISDN basic interface 8-core modular cable. Also, IS
In the DN basic interface, the voice coding system is the PCM coding system, so the slave unit side ADPCM CODEC 17
Reference numeral 12 denotes an ADPCM-PCM converter.

The operation of the conventional facsimile communication using the "deemed voice" method when the first method is used as the connection method between the slave unit 1709 and the facsimile 1719 in the configuration example of FIG. 21 will be described.

When the user of the slave unit 1709 and the facsimile machine 1719 makes a call to carry out facsimile communication with another facsimile (not shown) via the telephone line 1708, the user inputs the other party number with the dial button 1716 of the slave machine 1709, The call button 1717 is pressed.

Although a general facsimile has an outgoing function, no outgoing call is made using the outgoing function of the facsimile 1719.
A function 715 mainly transmits a sound from a microphone to a wireless line, and detects a call from a facsimile 1719 or a dial signal (pulse tone or call setting message).
This is because there is no function for receiving and translating into a number. In the second and third systems, the terminal interface 1715
Has a function on the network side of the telephone line, so that a call can be transmitted using the transmission function from the facsimile 1719.

When the other party's facsimile responds by calling, the facsimile 1719 is operated for manual transmission. In the case of a general facsimile, a line is connected by pressing an off-hook button, a document is placed on a reading section, and manual transmission is started by pressing a start button.

During facsimile communication, digital signals encoded by a predetermined voice encoding method flow on a digital radio communication channel for tone signals and modem signals used in radio facsimile communication. In the case of PHS, the ADPCM encoding method is used as the audio encoding method. The facsimile tone signal and the modem signal input from the facsimile 1719 to the terminal interface processing unit 1715 are converted into the slave side ADPCM CODEC 1712.
ADPCM-encoded by the slave unit side wireless transmission / reception unit 17
13 is transmitted to master device 1701.

In base unit 1701, base unit-side wireless transmission / reception unit 1
The ADPCM-encoded facsimile tone signal and modem signal received from the slave unit 1709 via the slave unit 1705 are decoded by the master unit-side ADPCM CODEC 1704, and are transmitted from the telephone line interface processing unit 1707 to the telephone line 1708. Further, the tone signal and the modem signal of the other party's facsimile received from the telephone line 1708 by the telephone line interface processing unit 1707 are converted into the ADPCM CODEC 1704 by the ADPCM CODEC 1704.
The data is M-coded and transmitted to the child device 1709 via the parent device wireless transmission / reception unit 1705.

In the handset 1709, the handset side wireless transmission / reception unit 1
The ADPCM-coded facsimile tone signal and modem signal received from the master unit 1701 via the base unit 713 are decoded by the slave unit-side ADPCM CODEC 1712 and output from the terminal interface processing unit 1715 to the facsimile 1719.

[0019]

The PHS is 32 kbps.
However, if facsimile communication is performed using the “deemed voice” method as in the conventional example,
Only a communication speed of about 6 kbps can be obtained. Even if a facsimile communication speed of 14.4 kbps or 28.8 kbps is attempted, a communication error occurs, and the communication speed falls back to about 9.6 kbps.

This can be caused by the following.
1) The ADPCM encoding method is standardized for the purpose of encoding a speech waveform, and when a facsimile tone signal or a modem signal is subjected to ADPCM encoding / decoding, the original waveform is distorted. 2) Since wireless communication is easily affected by noise, an error occurs in a wireless section.

Therefore, in the facsimile communication using the “deemed voice” system as in the conventional example, communication can be performed only at a low speed of 9.6 kbps, even though communication is performed using a PHS having a digital transmission path of 32 kbps. However, there is a problem that high-speed communication such as 14.4 kbps or 28.8 kbps cannot be performed.

An object of the present invention comprises a master unit connected to a telephone line and a slave unit provided with an interface for accommodating a facsimile terminal. The communication between the master unit and the slave unit is performed by a digital radio such as a PHS. It is an object of the present invention to provide a wireless telephone device that can perform facsimile communication at a higher communication speed than a communication speed conventionally realized by a "deemed voice" method in a wireless telephone device performed via a transmission path.

[0023]

That is, the gist of the present invention consists of a base unit connectable to a telephone line and a slave unit connectable to a facsimile terminal, and performs communication between the master unit and the slave unit. In a wireless telephone apparatus performed via a digital wireless transmission path, a base unit transmits / receives a facsimile signal via a telephone line and transmits / receives a bit string of image data via a digital wireless transmission path. Wherein the slave unit transmits and receives a facsimile signal to and from the connected facsimile terminal, and further includes a slave unit-side facsimile signal modulation / demodulation means for transmitting and receiving a bit sequence of image data via a digital wireless transmission path. Exist in telephone equipment.

[0024] Another aspect of the present invention is that a base unit connectable to a telephone line and a slave unit connectable to a facsimile terminal. A facsimile signal modulation / demodulation method for transmitting / receiving a facsimile signal via a telephone line and transmitting / receiving a bit string of image data via a digital wireless transmission path in a base unit. And a slave unit, wherein the slave unit transmits and receives a facsimile signal to and from a connected facsimile terminal, and further includes a slave side facsimile signal modulation and demodulation step of transmitting and receiving a bit sequence of image data via a digital wireless transmission path. The present invention resides in a method for controlling a device.

Another aspect of the present invention is to provide a master unit connectable to a telephone line and a slave unit to which a facsimile terminal can be connected. A storage medium storing a program of a control method for a wireless telephone device performed through a telephone line, wherein the parent device transmits and receives a facsimile signal via a telephone line and transmits and receives a bit string of image data via a digital wireless transmission path. Facsimile signal modulation / demodulation for transmitting / receiving a facsimile signal to / from a connected facsimile terminal and transmitting / receiving a bit sequence of image data via a digital wireless transmission path. The present invention resides in a storage medium having program codes for steps.

Another aspect of the present invention is that the present invention comprises a master unit connectable to a telephone line and a slave unit to which a facsimile terminal can be connected. And a facsimile signal modulating / demodulating means for transmitting / receiving a bit string of image data to / from each other via a digital wireless transmission path.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. [First Embodiment] FIG. 1 is a block diagram showing a configuration example of a base unit 101 (FIG. 1A) and a handset 109 (FIG. 1B) of a wireless telephone device according to an embodiment of the present invention. is there. In the figure, reference numeral 102 denotes a master unit control unit which is a control unit of the master unit 101;
03 is a base unit memory, 104 is a base unit facsimile modem / ADPCM CODEC, 106 is a base unit wireless transmission / reception unit, 106 is a base unit antenna, and 107 is a telephone line 10.
Reference numeral 108 denotes a telephone line interface processing unit which performs interface processing, and 108 denotes a telephone line.

Reference numeral 110 denotes a slave unit control unit which is a control unit of the slave unit 109; 111, a slave side memory; 112, a slave side facsimile modem / ADPCM CODEC; 113, a slave side wireless transmission / reception unit; An antenna 115, a terminal interface processing unit that accommodates the facsimile 119,
Reference numeral 116 denotes a dial button for inputting a dial when making a call, 117 denotes a call button for inputting the start of a call, 118
A connection cable connects the slave unit 109 and the facsimile 119. 119 is a facsimile. In the present embodiment, the facsimile 119 is assumed to satisfy the G3 standard.

In this embodiment, the telephone line 108 is assumed to be an analog telephone line, but may be a digital line such as ISDN. Slave unit 109 and facsimile 11
Although there are a plurality of possible connection methods with the connection method 9, typical ones are shown below.

As a first method, there is a method of connecting to a microphone jack of the slave unit 109. When connecting with a microphone jack, the terminal interface processing unit 115 has a function of inputting voice from a microphone to the slave facsimile modem 112, and has a shape such that a microphone plug is inserted. The connection cable 118 has a shape that can be inserted into a microphone jack on the side to be inserted into the cordless handset 109, and the facsimile 119 has a shape of a two-core modular jack for analog telephone lines. It has a function to perform a typical conversion.

As a second method, there is a method of connecting with an analog telephone line. When connecting with an analog telephone line, the terminal interface processing unit 115 has a function on the network side of the analog telephone line, and the connection cable is a two-core modular cable for the analog telephone line.

As a third method, there is a method of connecting with a digital telephone line such as an ISDN basic interface. IS
When connecting with the DN basic interface, the terminal interface processing unit 115 has a network-side function of the ISDN basic interface, and the connection cable is an ISDN basic interface 8-core modular cable. Also, ISD
In the N basic interface, the voice coding method is the PCM coding method, so that the child terminal interface processing unit 115 includes a PCM CODEC function.

The master and slave facsimile modems / ADPCM CODECs 104 and 112 have a facsimile modem and an ADPCM CODEC.
ADPCM CODE for normal voice calls
When C transmits a bit string of image data in facsimile communication, a facsimile modem is selected and used.

The method of selection is arbitrary. For example, a signal detection unit for detecting a control signal used in facsimile communication and a switch controlled by the signal detection unit are connected to a master and slave facsimile modem / ADPCM CO
It may be provided in the DECs 104 and 112 so that the signal path is switched to the facsimile modem when a control signal is detected from the input signal.

Since the operation relating to a normal voice call is not directly related to the present invention, in the following description, in order to simplify the notation, the facsimile modem / A
The DPCM CODECs 104 and 112 are simply referred to as the parent and slave facsimile modems 104 and 112.

FIG. 2 is a diagram showing an example of facsimile (G3) data. FIG. 2 shows facsimile data for one page.

The facsimile data for one page is "00".
EO represented by the bit string "00000000001"
Start with L (End Of Line). The EOL is followed by the data obtained by encoding the original image. When the data for one scanning line is completed, the EOL is inserted and the data becomes the next line. Thereafter, the same configuration is repeated for each line, and one page of data is completed by six consecutive EOLs. In a facsimile, the minimum transmission time required to transmit and receive one line of data is determined by the scanning capability. Therefore, when the image of one line is encoded, if the time is less than the minimum transmission time, a fill, which is a bit string of 0, is inserted after the data, and is shaped into one line data exceeding the minimum transmission time.

The main-unit-side facsimile modem 104, which is a feature of this embodiment, has an analog input / output terminal connected to the telephone line interface processing unit 107, and a bit string of image data starting from an analog input and starting with EOL as shown in FIG. When a modem signal (facsimile data from the other party's facsimile) is received, the modem signal is demodulated, and the bit string of the demodulated image data is transmitted via the master unit's wireless transmission / reception unit 105 to the slave unit's wireless transmission / reception unit 113. Send to

When a bit sequence of image data starting with EOL as shown in FIG. 2 is received from the slave unit via the base unit side wireless transmission / reception unit 105, a modem signal obtained by modulating the bit sequence of the image data is converted into an analog signal. The output is output to the telephone line 108 via the telephone line interface processing unit 107.

On the other hand, the slave side facsimile modem 112
Is a terminal interface processing unit 1
15 and the EOL as shown in FIG. 2 from the base unit side wireless transmission / reception unit 105 via the handset side wireless transmission / reception unit 113.
Is received, a modem signal obtained by modulating the bit sequence of the image data is output from the analog output to the facsimile 119 via the terminal interface processing unit 115.

When a modem signal (facsimile data from facsimile 119) obtained by modulating a bit string of image data starting with EOL as shown in FIG. 2 from the analog input via terminal interface processing section 115 is received, Is demodulated, and the bit string of the demodulated image data is transmitted to the base unit side wireless transmission / reception unit 105 via the handset side wireless transmission / reception unit 113.

When a PHS is used as the digital wireless communication path, the bit string of the image data demodulated by the master side facsimile modem 104 or the slave side facsimile modem 112 is transmitted / received using the information channel TCH of 32 kbps.

By providing a facsimile modem having such a function, the "deemed voice" which is suppressed by the reproducibility of the waveform of the modem signal by the voice coding / decoding of the digital wireless transmission path using the ADPCM coding method or the like. The facsimile communication with the upper limit of the speed of the digital wireless transmission path can be realized irrespective of the upper limit of the speed of the facsimile communication by the method.

A problem in converting the bit string of image data between the facsimile signal and the digital wireless transmission path is a difference between the speed of the facsimile signal and the speed of the digital wireless transmission path. When the bit string demodulated from the facsimile signal is transmitted as it is to the digital wireless transmission path, or when the bit string from the digital wireless transmission path is directly modulated into the facsimile signal, the speed of the facsimile signal and the speed of the digital wireless transmission path match. Only valid for However, in most cases, the speed of the facsimile signal is different from the speed of the digital wireless transmission path. FIG. 3 is a diagram illustrating a communication mode when the speed of a facsimile signal is different from the speed of a digital wireless transmission path.

In the figure, reference numeral 301 denotes the other party's facsimile,
302 is a public network. A wireless telephone device and a telephone line 108 according to the present embodiment, each including a master device 101 and a slave device 109.
The facsimile 119 performs transmission and reception with the facsimile machine 301 via the connection cable 118, the public network 302 and the like. In the example of FIG. 3, the speed of the facsimile signal is 14.4 k.
bps and the speed of the digital wireless transmission path is 32 kbps
It is. As shown in FIG. 2, since the bit string of the facsimile image data is a continuous bit string for one page, the receiving side may not be able to reproduce the bit string without considering the speed consistency.

In the second to fourth embodiments described below, when transmitting a bit string of image data to a digital wireless transmission path, it is possible to receive a bit string of facsimile image data continuous for one page in consideration of speed consistency. It is characterized by having done.

(Second Embodiment) A wireless telephone device according to a second embodiment of the present invention has a function of storing a bit string of facsimile image data for one page and then transmitting the bit string, to the master unit 101 or the slave unit 109. , Which solves the problem of speed consistency.

In this embodiment, the configurations of the parent device 101 and the child device 109 are the same as those of the first embodiment shown in FIG.

FIG. 4 is a sequence diagram among the other party's facsimile 301, the master unit 101, the slave unit 109, and the facsimile 119 in the radio telephone apparatus according to the second embodiment. The sequence diagram of FIG. 4 shows an example in which image data is transmitted from the partner facsimile 301 to the facsimile 119. FIGS. 5 and 6 are flowcharts respectively showing the operations of the parent device 101 and the child device 109 when the sequence shown in FIG. 4 is executed.

Hereinafter, the operation of the wireless telephone device according to the second embodiment will be described with reference to the sequence diagram of FIG. 4 and the flowcharts of FIG. 5 and FIG.

The master unit 101 demodulates the EOL by demodulating the modem signal from the telephone line 108 in order to detect the beginning of one page of data in the image data transmission phase.
Is monitored (step S502). EOL (FIG. 4,
When a) is detected, the modem signal (FIG. 4, b) from the telephone line 108 is demodulated and stored in the received data storage area in the memory 103 of the base unit 1 bit or several bits at a time (step S503). The master unit 101 stores image data for one page and then transmits the image data to the slave unit 109. Therefore, while storing the received data, six consecutive EOLs indicating the end of one page are detected. (Step S504). When six consecutive EOLs (FIG. 4, c) are detected, the accumulation of the received data is terminated, and the master side memory 103
The image data stored in the received data storage area is transmitted to the slave unit 109 (step S505).

The slave unit 109 monitors the EOL in the data received from the master unit 101 in order to detect the beginning of one page of data when the image data transmission phase has come (step S602). When the EOL (FIG. 4, d) is detected, the received data (FIG. 4, e) from the master unit 101 is accumulated in the received data storage area in the slave unit side memory 111 by one bit or several bits (step S60).
3). Since the slave unit 109 stores the image data for one page and then transmits the image data to the facsimile 119, six consecutive EOLs indicating the end of one page are detected while storing the received data. (Step S60
4). When six consecutive EOLs (FIG. 4, f) are detected, the storage of the received data is terminated, and the image data stored in the received data storage area in the memory 111 on the slave unit side is modulated and transmitted to the facsimile 119. Yes (Step S6
05 and FIG. 4, g).

FIGS. 4 to 6 show a case where image data is transmitted from the other party facsimile 301 to the facsimile 119, that is, a case where image data is transmitted from the parent device 101 to the child device 109. When transmitting image data to 301,
That is, the transmission from the child device 109 to the parent device 101 can be similarly realized by the operation of the parent device 101 being performed by the child device 109 in the above description and the operation of the child device 109 in the above example being performed by the parent device.

As described above, in the second embodiment, the master unit and the slave unit accumulate the bit string of the continuous image data for one page and then transmit the bit sequence, so that the speed of the facsimile signal and the digital The same effects as in the first embodiment can be obtained even when the speeds of the wireless transmission paths are different.

(Third Embodiment) In the second embodiment, by adding a function of accumulating one page of data in the master unit and the slave unit, the transmission speed of the facsimile signal and the digital wireless transmission path In the second embodiment, since the image data is temporarily stored, the immediacy of the image data is reduced.

That is, the facsimile usually does not transmit the image data of the next page unless there is a response that the other party's facsimile has received the image data of one page. FIG.
As is clear from the sequence of FIG. 2, in the second embodiment, the image data is accumulated twice before the receiving-side facsimile 119 receives one page of data, so that the facsimile 119 does not pass through the digital wireless transmission path. More than twice the time is required to transmit one page of data. Therefore, the third embodiment and the fourth embodiment are characterized by further solving the problem of the immediacy of communication.

The third embodiment is characterized in that the speed of a facsimile signal is matched with the speed of a digital radio transmission line by inserting or removing a fill for each line. Also in this embodiment, as in the second embodiment,
The configuration of the apparatus may be as shown in FIG. 1, and the description of the configuration will be omitted.

FIG. 7 is a diagram showing a sequence performed among the facsimile machine 301, the master unit 101, the slave unit 109, and the facsimile 119 in the radio telephone apparatus according to the third embodiment. The sequence diagram of FIG. 7 also shows a sequence when an image is transmitted from the partner facsimile 301 to the facsimile 119, as in FIG.

FIG. 8 shows an example of format conversion of one page of image data when the sequence shown in FIG. 7 is executed. 8, F801 indicates a format between the facsimile machine 301 and the parent device 101, F802 indicates a format between the parent device 101 and the child device 109, and F803.
Is a format between the slave unit 109 and the facsimile 119. In this embodiment, the speed of the facsimile signal is 14.4 kbps, the speed of the wireless digital transmission path between the master unit and the slave unit is 32 kbps, and the image data for one line includes EOF, data, and fill. 144
bit.

Hereinafter, the operation of the wireless telephone device according to the third embodiment will be further described with reference to FIGS. 7 and 8, and the flowcharts of FIGS. 9 and 10 showing the operations of the master unit 101 and the slave unit 109.

In the base unit 101, when the transmission phase of the image data is entered, the modem signal from the telephone line 108 is demodulated to detect the beginning of one page of data and EOL is performed.
Is monitored (step S802). Master unit 101 is E
When OL (FIG. 7, a) is detected, format conversion from F801 to F802 as shown in FIG. 8 is performed for each line until six consecutive EOLs are detected (step S806) (step S804). Is transmitted to the device 109 (step S805).

The format conversion performed by master device 101 will be described below. EO indicating the end of the previous line in master unit 101
A bit string from L to the next EOL, that is, data for one line (FIG. 7B) is temporarily stored in the parent device side memory 103 (step S803). The ratio (D2 / D1) of the speed of the fax signal (D1) to the speed of the wireless digital transmission path (D2) is calculated by adding the number of bits of the stored data.
To calculate the number of bits required for the wireless digital transmission path, and transmit the bit string (FIG. 7, e) into which the fill is inserted by the number of bits corresponding to the difference from the stored data to the slave unit 109 (step S805). In the example of FIG. 8, since the number of bits for one line is 144 bits, the speed ratio (D2 / D1 = 32k)
bps / 14.4 kbps), 32/1
4.4 * 144 = 320, and the number of bits required for the wireless digital transmission path is 320 bits.

Accordingly, master device 101 inserts a fill (0) of 320-144 = 176 bits, which is the difference in the number of bits, into the data of each line. This format conversion is performed for each line, and the speed of the digital wireless transmission line is faster than the speed of facsimile communication. Therefore, even if the next page transmission timing of the digital wireless transmission line comes, reception of one line is completed. In this case, the time from when the base unit 101 receives the first EOL (FIG. 7, a) to when the base unit 101 transmits the first EOL (FIG. 7, d) to the slave unit 109 (see FIG. 7, In h), it is better to leave more than the assumed maximum one-line reception time (maximum transmission time).

In step S806, six consecutive EOLs indicating the end of one page of data in the received data are received.
Is detected, the process for one page in the master device 101 ends.

When the slave unit 109 detects the EOL (FIG. 7, d) (step S1002), it waits for the detection of six consecutive EOLs (FIG. 7, c) in step S1006 until an F802 as shown in FIG. 8 is detected. The format is converted from F803 to F803 line by line (step S100
4) The modulated data is modulated and transmitted to the facsimile 119 (step S1005).

The format conversion performed by the slave unit 109 will be described below. In the slave unit 109, EO indicating the end of the previous line
A bit string from L to the next EOL, ie, 1
The data for the line is temporarily stored in the slave side memory 111 (step S1003). The number of bits of the stored data is multiplied by the ratio of the speed of the wireless digital transmission path and the speed of the fax signal, as in the parent machine, to calculate the number of bits required for the fax signal. Remove the fill. That is, the speed difference fill inserted by the master unit is removed (step S1004). Then, the remaining bit string is modulated and transmitted to the facsimile 119 (step S1005).

As described above, in this embodiment, the speed of the wireless digital transmission line is 320 bps, the speed of the facsimile signal is 14.4 kbps, and the data of one line transmitted from the master unit is 320 bits. By multiplying the speed ratio, the number of bits required for the facsimile signal becomes 144 bits. In the slave unit 109, this difference is 17
The 6-bit fill (0) is removed.

FIGS. 7 to 10 show a case where image data is transmitted from the other party facsimile 301 to the facsimile 119, that is, a case where image data is transmitted from the parent device 101 to the child device 109. In the case where image data is transmitted to the slave unit 301, that is, when the slave unit 109 transmits the image data to the master unit 101, the operation of the master unit 101 is performed by the slave unit 109 in the above description, and the operation of the slave unit 109 in the above example is performed. Can be realized in the same manner.

As described above, in the third embodiment, the master unit and the slave unit transmit data line by line, and insert the speed difference between the wireless digital transmission line and the facsimile signal by the master unit. By absorbing by the fill, the same effect as in the second embodiment can be obtained while improving the immediacy of communication.

(Fourth Embodiment) This embodiment is characterized in that the speed of a facsimile signal and the speed of a digital radio transmission line are matched by a different method from that of the third embodiment. Specifically, ITU-T Recommendation V. It is characterized in that the speed of the facsimile signal and the speed of the digital wireless transmission path are matched using the speed matching frame of 110.

The configuration of the wireless telephone device according to the fourth embodiment may be the same as that of the other embodiments as shown in FIG. 1, and a description of the configuration will be omitted.

FIG. 11 shows 14.4 kbps and 32 kbps
ITU-T Recommendation V.3 when performing speed matching FIG. 3 is a diagram showing a format on a 32 kbps transmission line in 110. The bit transmission order on 32 kbps is from left to right and from top to bottom in this format. D1 to D36 on the format correspond to bit strings on the transmission path of 14.4 kbps. S1 to S9 and X are status bits, E1 to E7 are E bits, and F is a flag bit. That is, FIG. 11 shows that a 36-bit data string is
This indicates a format for conversion to 0 bits (10 octets). When transmitting 14.4 kbps facsimile data to a 32 kbps wireless digital transmission line, 1 bit is used.
By converting the 144-bit data of the line based on this format conversion table, the data can be converted to 320-bit data.

Therefore, when the master unit 101 enters the image data transmission phase, the bit string obtained by demodulating the modem signal from the telephone line 108 is converted into one according to the format shown in FIG.
After converting from 4.4 kbps to 32 kbps and transmitting to the slave unit 109, when the slave unit 109 enters the image data transmission phase, the data bit string from the master unit 101 is converted from 32 kbps to 14 kbps according to the format of FIG. Facsimile 1 after converting to .4 kbps
By transmitting the data to 19, the same effect as in the third embodiment can be obtained. Conversely, when the slave unit 109 enters the image data transmission phase, the facsimile 119
After converting the bit string obtained by demodulating the modem signal from the base station 11.4 kbps to 32 kbps in accordance with the format shown in FIG. 11 and transmitting the converted data to the base unit 101, when the base unit 101 enters the image data transmission phase, the slave unit 109 11 is converted from 32 kbps to 14.4 kbps in accordance with the format of FIG. 11 and then transmitted to the telephone line 108, so that the same processing can be performed when transmitting from the facsimile 119 to the other party's facsimile 301. .

In the fourth embodiment, the ITU-T Recommendation V.1 which is the recommended speed matching is used. 110 is used, and it is not necessary to be aware of a continuous bit string for one page of a facsimile, so that EO is used as in the second and third embodiments.
There is no need to detect L.

As described above, in the fourth embodiment, the ITU-T Recommendation V. By adopting the speed matching by 110, the same effect as in the second embodiment can be obtained while improving the immediacy of communication.

(Fifth Embodiment) In the first to fourth embodiments, the case where the image data of one page of the facsimile is a continuous bit string has been described. In the facsimile communication, the ECM (Error Correction Mode) is used. As in communication, there is a method of dividing one page of image data into a plurality of pieces and sending them in packets. FIG. 12 is a diagram showing an example of a packet format used for such packet communication. Packet F1001 in FIG. 12 is HDLC (High-level Dat
a Link Control), and facsimile image data is mapped to an information field.

The fifth embodiment is an embodiment in which facsimile communication is performed using the packet F1001 shown in FIG. FIG. 13 shows a partner facsimile machine 301 and a base unit 101 in the wireless telephone device according to the fifth embodiment.
FIG. 9 is a sequence diagram between the slave unit 109 and the facsimile 119.

The fifth embodiment will be described below with reference to the packet format of FIG. 12, the sequence diagram of FIG. 13, and the flowcharts showing the processing of the master unit 101 and the slave unit 109, which are shown in FIGS.

In the base unit 101, when the image data transmission phase is entered, whether the bit string obtained by demodulating the modem signal from the telephone line 108 by the base unit facsimile modem 104 is a packet F1001 having the format shown in FIG. Is detected (step S1101), and the detected packet F1001 is transmitted to the slave unit 109 (step S1101).
1102). Six consecutive EOLs indicating the end of data of one page of data (N frames (N is a natural number))
Is received (step S1103), master device 101
A continuous EOL is transmitted to the slave unit 109 (step S
1104).

On the other hand, the slave unit 109 detects whether or not the data received from the master unit 101 includes the packet F1001 of the image data (step S1201), and converts the detected packet F1001 of the image data to the slave side facsimile. The data is modulated by the modem 112 and transmitted to the facsimile 119 (step S1202). When one page of data is transmitted from slave unit 109 to facsimile 119 (step S
1203), six consecutive EOLs are transmitted (step S1204).

In FIG. 13, the partner facsimile 30
1 shows a case where image data is transmitted to the facsimile 119, that is, a case where image data is transmitted from the master unit 101 to the slave unit 109. However, a case where image data is transmitted from the facsimile 119 to the partner facsimile 301, that is, the slave unit 109. In the above description, the transmission from the base unit 101 to the base unit 101 can also be realized by the operation of the base unit 101 performed by the slave unit 109 and the operation of the slave unit 109 in the above example performed by the base unit.

As described above, in the fifth embodiment, the same effect as in the first embodiment can be obtained also in facsimile communication in which one page of image data is divided into a plurality of pieces and transmitted in packets. .

(Sixth Embodiment) In the first to fifth embodiments, only the transmission and reception of image data is performed by a wireless digital transmission path. Instead, all facsimile communication sequences from the start to the end of facsimile communication are performed via a wireless digital transmission path.

FIG. 19 is a sequence diagram of facsimile communication without a digital wireless transmission path, that is, a wired analog line. Facsimile signals include tone signals and
There are binary signals and training signals. Outgoing tone C
NG (M1201) or called station identification signal CED (M120
2) is a tone signal, which is a digital identification signal DIS (M
1202) Digital command signal DCS (M1203)
Reception preparation confirmation signal CFR (M1206), multi-page signal MPS (M1208), message confirmation signal MCF
(M1209)-Procedure end signal EOP (M1211)-
The disconnection signal DCN (M1213) is a binary signal.

In the case of a tone signal, information is notified to the other party using a tone of a certain frequency. CNG is a signal for calling station discrimination by repeating “transmission of 1100 Hz for 0.5 seconds + silence for 3 seconds”. The CED is a signal for identifying a called station in "transmission for 2 seconds at 2100 Hz".

The binary signal is in accordance with ITU-T Recommendation V. This signal is transmitted using a 300 bps modem signal specified in 21 and transmitted in the HDLC format shown in FIG. The binary signal is composed of a preamble and a binary signal frame (F1601). The preamble is a one-second flag sequence ("01111110")
Is a continuation of The preamble can be followed by one or more binary signal frames, where one binary signal frame has the format shown in F1602. The type of the binary signal is described in the facsimile control field. The training signal is a signal transmitted to perform equalization of the modem.

In the sixth embodiment, the radio telephone apparatuses according to the first to fifth embodiments have the following first to third functions.

The first function is a function for transmitting and receiving binary signal information through a digital wireless transmission path. The radiotelephone device having the first function is described in the facsimile control field when a binary signal as shown in FIG. 20 is received from the analog input to each of the master-side facsimile modem 104 and the slave-side facsimile modem 112. A function of transmitting a “binary signal notification message” with the specified binary signal type to the base unit side wireless transmission / reception unit 105 or the handset side wireless transmission / reception unit 113; It has a function of transmitting a binary signal from an analog output when a “binary signal notification message” is received from the unit 113.

The second function is a function for transmitting and receiving the information of the training signal on the digital wireless transmission path. Second
The wireless telephone device having the function of (1) transmits a “training signal notification message” to the base unit-side wireless transmission / reception unit 105 when the base unit-side facsimile modem 104 and the slave unit-side facsimile modem 112 each receive a training signal from an analog input. And a function of transmitting a training signal from an analog output when a “training signal notification message” is received from the base unit side wireless transmission / reception unit 105 or the handset side wireless transmission / reception unit 113. Having.

The third function is a function for transmitting and receiving information of a tone signal through a digital wireless transmission path. The radiotelephone device having the third function is provided in the base station-side facsimile modem 104 and the slave unit-side facsimile modem 112, respectively.
A function of transmitting a “training signal notification message” from the analog input to the master unit-side wireless transmission / reception unit 105 to the slave unit-side wireless transmission / reception unit 113; “Training signal notification message” from the transmission / reception unit 113
Has a function of transmitting a training signal from an analog output when receiving a training signal.

FIG. 16 is a diagram showing a sequence between the partner facsimile 301, the master unit 101, the slave unit 109, and the facsimile 119 in the radio telephone apparatus according to the sixth embodiment. FIGS. 17 and 18 are flowcharts respectively showing the operations of the parent device 101 and the child device 109 when the sequence of FIG. 16 is executed.

Hereinafter, the operation of the wireless telephone device according to the sixth embodiment will be described with reference to the sequence diagram of FIG. 16 and the flowcharts of FIGS. Upon receiving the binary signal shown in FIG. 20 from telephone line 103 (step S1302), base unit 101 transmits a “binary signal notification message” with the binary signal type described in the facsimile control field to slave unit 109. (Step S1303). Slave device 109 is master device 101
When the "binary signal notification message" is received (step S1402), the binary signal type and the binary signal included therein are transmitted to the facsimile 119 (step S1403).

When master unit 101 receives the training signal from telephone line 103 (step S1304),
A "training signal notification message" is transmitted to the slave (step S1305). The slave unit 109 is the master unit 10
When receiving the "training signal notification message" from the first device (step S1404), the device transmits a training signal to the facsimile 119 (step S1405).

Further, upon receiving the tone signal from telephone line 103 (step S1306), master device 101 transmits a "tone signal notification message" to the slave device (step S1307). The slave unit 109 receives the "tone signal notification message" from the master unit 101 (step S14).
06) The tone signal is transmitted to the facsimile 119 (step S1407).

When the parent device 101 and the child device 109 enter the image data transmission phase (steps S1308 and S1408), image data is transmitted and received by the method described in any of the first to fifth embodiments. (Step S13
09 / step S1409).

In the first to fifth embodiments, a new communication system which does not use the deemed voice system for image data is disclosed. In the sixth embodiment, the start and end of facsimile communication such as a binary signal, a training signal and a tone signal are performed. It discloses a new communication system that does not use a voice system, considering all signals transmitted and received until now.

In the sixth embodiment, in addition to the effects obtained in the first to fifth embodiments, the deemed voice system is not used in all phases from the start to the end of facsimile communication. ADP used
This eliminates the need for a CM codec and the like, and has the effect of reducing cost and size.

In the above description, a case has been described in which, in the wireless telephone device according to the sixth embodiment, the parent-unit-side facsimile modem has all of the first to third functions. However, it is not always necessary to provide all of the first to third functions.

[0099]

[Other Embodiments] The above embodiments can be combined with each other. For example, format conversion, ITU
-T Recommendation V. The speed conversion by 110 can be applied to the data transmission in packet units shown in FIG. 13, and the exchange of control signals in the facsimile communication via the wireless digital transmission line described in the sixth embodiment is different from that of the other embodiments. Image data transmission.

The present invention can be applied to a system composed of a plurality of devices (for example, a host computer, an interface device, a reader, a printer, and the like), and can be applied to a single device (for example, a copier, a facsimile). Device).

Further, an object of the present invention is to supply a storage medium (or a recording medium) in which a program code of software for realizing the functions of the above-described embodiments is recorded to a system or an apparatus, and to provide a computer (a computer) of the system or the apparatus. It is needless to say that the present invention can also be achieved by a CPU or an MPU) reading and executing the program code stored in the storage medium. In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention. Also,
When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also the operating system (OS) running on the computer based on the instructions of the program code.
It goes without saying that a case where the functions of the above-described embodiments are implemented by performing some or all of the actual processing, and the processing performs the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the program code is read based on the instruction of the program code. Needless to say, the CPU included in the function expansion card or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

When the present invention is applied to the storage medium, the storage medium may include any of the above-described storage mediums (any of FIG. 5, FIG. 6, FIG. 9, FIG. 10, FIG. 14, FIG. 15, FIG. 17, and FIG. 18). The program code corresponding to the flowchart is stored.

[0104]

As described above, according to the present invention,
A wireless telephone device comprising a master unit connected to a telephone line and a slave unit provided with an interface for accommodating a facsimile terminal, and performing communication between the master unit and the slave unit via a digital wireless transmission path such as a PHS. In this case, there is an effect that the facsimile communication can be performed with the upper limit of the speed of the digital wireless transmission path irrespective of the upper limit of the speed of the facsimile communication by the “deemed voice” method.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of a wireless telephone device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of a bit string of image data of a facsimile (G3).

FIG. 3 is a diagram illustrating an example of a communication configuration in which the speed of a facsimile signal and the speed of a digital wireless transmission path are different.

FIG. 4 is a sequence diagram between a partner facsimile machine 301, a master machine 101, a slave machine 109, and a facsimile 109 in the second embodiment of the present invention.

FIG. 5 is a diagram illustrating a master device 101 in the sequence illustrated in FIG.
6 is a flowchart showing the operation of the first embodiment.

FIG. 6 shows a slave unit 109 in the sequence shown in FIG.
6 is a flowchart showing the operation of the first embodiment.

FIG. 7 is a sequence diagram among a partner facsimile 301, a parent device 101, a child device 109, and a facsimile 109 in the third embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of format conversion of image data for one page according to the third embodiment.

FIG. 9 shows a base unit 101 in the sequence shown in FIG.
6 is a flowchart showing the operation of the first embodiment.

FIG. 10 shows slave 10 in the sequence shown in FIG.
9 is a flowchart showing the operation of the third embodiment.

FIG. 11 shows ITU-T Recommendation V.1 when performing speed matching between 14.4 kbps and 32 kbps. FIG. 4 is a diagram showing a conversion format in 110.

FIG. 12 is a diagram illustrating a format example of an image data packet.

FIG. 13 shows a partner facsimile machine 301, a master machine 101, a slave machine 109, and a facsimile machine 109 in the fifth embodiment.
FIG.

14 is a master unit 1 in the sequence shown in FIG.
11 is a flowchart showing the operation of the example No. 01.

FIG. 15 shows slave unit 1 in the sequence shown in FIG.
It is a flowchart which shows operation | movement of 09.

FIG. 16 shows a facsimile machine 3 according to the sixth embodiment.
FIG. 4 is a sequence diagram among 01, a master device 101, a slave device 109, and a facsimile 109.

FIG. 17 shows master unit 1 in the sequence shown in FIG.
11 is a flowchart showing the operation of the example No. 01.

FIG. 18 shows slave unit 1 in the sequence shown in FIG.
It is a flowchart which shows operation | movement of 09.

FIG. 19 is a sequence diagram of facsimile communication over a wired analog line.

FIG. 20 is a diagram illustrating a format of a binary signal.

FIG. 21 is a block diagram illustrating a configuration example of a conventional wireless telephone device when facsimile communication is performed by a “deemed voice” method.

[Explanation of symbols]

 101 Base Unit 102 Base Unit Control Unit 103 Base Unit Memory 104 Base Unit Facsimile Modem 105 Base Unit Wireless Transmission / Reception Unit 107 Phone Line Interface Processing Unit 108 Phone Line 109 Handset 110 Handset Control Unit 111 Handset Memory 112 Child Machine-side facsimile modem 113 Handset-side wireless transmitting / receiving unit 115 Terminal interface processing unit 118 Connection cable 119 Facsimile

Claims (14)

[Claims] 1. A wireless telephone comprising a master unit connectable to a telephone line and a slave unit connectable to a facsimile terminal, and performing communication between the master unit and the slave unit via a digital wireless transmission path. In the apparatus, the base unit includes a base unit-side facsimile signal modulation / demodulation unit that transmits and receives a facsimile signal via the telephone line and transmits and receives a bit sequence of image data via the digital wireless transmission path. A wireless telephone device comprising: a slave facsimile signal modulation / demodulation means for transmitting / receiving a facsimile signal to / from a connected facsimile terminal and transmitting / receiving a bit string of image data via the digital wireless transmission path. 2. The base unit stores: a base unit side storage unit that stores a predetermined amount of the facsimile signal and the bit sequence of the image data; and the sub unit stores a predetermined amount of the bit sequence of the facsimile signal and the image data. The slave unit-side storage unit, further comprising: the base unit-side facsimile signal modulation / demodulation unit and the slave unit-side facsimile signal modulation / demodulation unit perform the transmission process after the predetermined amount of storage is performed. 2. The wireless telephone device according to 1. 3. The wireless telephone device according to claim 2, wherein said predetermined amount is one page. 4. The wireless telephone device according to claim 2, wherein said predetermined amount is one line. 5. The radio telephone apparatus according to claim 2, wherein said facsimile data has a packet format, and said predetermined amount is one packet. 6. The master unit and the slave unit further comprising a speed conversion unit for mutually converting a bit rate of the image data and a communication speed of the wireless digital transmission path. Item 6. The wireless telephone device according to any one of items 5. 7. A means for adding adjustment data corresponding to a difference between a communication speed of the wireless digital transmission path and a bit rate of the image data to a bit string of the image data, wherein the speed conversion means includes: 7. The wireless telephone device according to claim 6, further comprising means for removing the adjustment data from the data in the facsimile signal format to which is added. 8. The wireless telephone device according to claim 6, wherein said speed conversion means performs said conversion using a predetermined speed conversion frame. 9. The method according to claim 5, wherein the rate conversion frame is defined in ITU-T Recommendation V.10. The wireless telephone device according to claim 8, wherein the wireless communication device is a speed conversion frame defined by 110. 10. The master unit and the slave unit further include control signal identification means for identifying a control signal in facsimile communication, and the master unit side modulation / demodulation means transmits the control signal to the telephone line and the wireless digital transmission. The transmission / reception between channels is controlled, and the slave unit-side modulation / demodulation unit controls transmission / reception of the control signal between the facsimile terminal and the wireless digital communication channel. The wireless telephone device according to claim 1. 11. The wireless telephone device according to claim 10, wherein said control signal includes at least one of a tone signal, a binary signal, and a training signal. 12. A wireless telephone comprising a master unit connectable to a telephone line and a slave unit connectable to a facsimile terminal, and performing communication between the master unit and the slave unit via a digital wireless transmission path. A method of controlling an apparatus, wherein the master unit transmits and receives a facsimile signal via the telephone line, and transmits and receives a bit string of image data via the digital wireless transmission path. A wireless telephone device comprising: a slave-side facsimile signal modulation / demodulation step of transmitting / receiving a facsimile signal to / from a connected facsimile terminal and transmitting / receiving a bit string of image data via the digital wireless transmission path. Control method. 13. A wireless telephone comprising a master unit connectable to a telephone line and a slave unit connectable to a facsimile terminal, and performing communication between the master unit and the slave unit via a digital wireless transmission path. A storage medium storing a program for a control method of an apparatus, wherein the master unit transmits and receives a facsimile signal via the telephone line and transmits and receives a bit sequence of image data via the digital wireless transmission path. Side facsimile signal modulation / demodulation step; and A storage medium characterized by having a program code of (1). 14. A wireless telephone comprising a master unit connectable to a telephone line and a slave unit connectable to a facsimile terminal, and performing communication between the master unit and the slave unit via a digital wireless transmission path. In the apparatus, the master unit and the slave unit include facsimile signal modulation / demodulation means for mutually transmitting and receiving a bit string of image data via the digital wireless transmission path.