JP3155682B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a facsimile apparatus capable of performing eight procedures.

[0002]

2. Description of the Related Art Conventionally, V.V. In a facsimile apparatus capable of performing eight procedures, a modified response signal (ANSam) is transmitted from a called terminal.
Signal), while the calling terminal transmits a calling menu signal (CM signal).

[0003]

By the way, at the time of automatic calling or automatic receiving, it is possible to distinguish between the calling terminal and the called terminal. Eight procedures can be executed reliably. However, at the time of manual transmission or manual reception, the above V.11. There is a drawback that the eight procedures cannot be executed reliably.

[0004] The present invention relates to a method for transmitting data manually or receiving data manually. An object of the present invention is to provide a facsimile apparatus capable of executing eight procedures reliably.

[0005]

In the first invention of the present application, V.V. A facsimile machine capable of eight procedures has a calling signal detecting means, and transmits a calling display signal (CI signal) or a calling menu signal (CM signal) if no calling signal is detected when communication is selected. When a call signal is detected, a modified response tone signal (ANSam signal) or a common menu signal (JM signal) can be transmitted. 8 procedures can be performed.

Further, in the second invention of the present application, the first invention
In the invention of the above (1), further, there is provided a call detecting means, and when an automatic call is detected, a call display signal or a call menu signal is transmitted. Further, in the third invention of the present application, in the first and second inventions, an automatic incoming call mode is further provided, and when an automatic incoming call is received, a modified response tone signal is transmitted. By these means, V.S. 8 procedures can be performed.

[0007]

FIG. 1 is a block diagram showing the configuration of a facsimile apparatus according to one embodiment of the present invention.

An NCU (network control unit) 2 connects a telephone network to a terminal of the line in order to use the telephone network for data communication and the like, controls connection of a telephone exchange network, and switches to a data communication path. , And a loop is held. The NCU 2 connects the telephone line 2a to the telephone if the signal level (signal line 28a) from the control circuit 28 is "0", and connects the telephone line 2a if the signal level is "1".
Is connected to the facsimile machine side. In a normal state, the telephone line 2a is connected to the telephone 4 side.

The telephone 4 outputs a signal of signal level "1" to the signal line 4a when in the off-hook state, and outputs a signal of signal level "0" to the signal line 4a when in the on-hook state.

The hybrid circuit 6 separates the transmission system signal and the reception system signal, and converts the transmission signal from the addition circuit 12 to N
The signal is transmitted to the telephone line 2a via the CU2, a signal from the other party is received via the NCU2, and transmitted to the modem 8 via the signal line 6a.

The modulator / demodulator 8 is based on ITU-T Recommendation V. 8,
V. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I.
The modulation and demodulation are performed based on the signal line 34, and each transmission mode is designated by the signal line 28c. Then, the signal output to the signal line 28b is input, the modulation data is output to the signal line 8a, the reception signal output to the signal line 6a is input, and the demodulated data is output to the signal line 8b.

The ANSam signal sending circuit 10 outputs
m is a circuit for transmitting a signal m, and when a signal of signal level "1" is output to the signal line 28d, the signal line 10a
When the ANSam signal is sent to the signal line 28d and the signal of the signal level "0" is output to the signal line 28d, no signal is output to the signal line 10a.

The adder circuit 12 receives the information of the signal line 8a and the information of the signal line 10a and adds the result of the addition to the signal line 12a.
Output to

The reading circuit 14 reads an image on a document, and outputs read data to a signal line 14a.

The recording circuit 16 prints out a received image or a read image, and sequentially records the information output on the signal line 28e line by line on a recording sheet.

The memory circuit 18 is used to store raw information or encoded information of read data, and to store received information or decoded information.

The operation unit 20 includes a one-touch dial, abbreviated dial, a start key, a numeric keypad, and other function keys.
0a is output.

When a calling command pulse is generated on the signal line 28g, the automatic calling circuit 22 inputs the telephone number output on the signal line 28f and outputs a selection signal on the signal line 2b.

The paging signal detection circuit 24 receives the signal output on the signal line 2b and outputs a signal of signal level "1" on the signal line 24a when detecting the paging signal.
If no call signal is detected, a signal of signal level "0" is output to signal line 24a.

The control circuit 28 controls the entire facsimile of the present embodiment. In the procedure 8, if the call signal is not detected by the call signal detection circuit 24 when the communication is selected for the manual transmission and the manual reception, a call display signal (CK signal) or a call menu signal (CM)
Signal), and when a call signal is detected, control is performed to transmit a modified response tone signal (ANSam signal) or a common menu signal (JM signal).

When an automatic call by the automatic call circuit 22 is detected, a call display signal or a call menu signal is transmitted. In the automatic call reception mode, a modified response tone signal is transmitted when an automatic call is received. I do.

FIGS. 2 and 3 are flowcharts showing the control flow of the control circuit 28 in this embodiment.

First, in S32, a signal of signal level "0" is output to the signal line 28a, and the CML is turned off. Also,
In S34, a signal of the signal level "0" is output to the signal line 28d, and the ANSam signal is not transmitted.

In S36, the information on the signal line 20a is inputted, and it is determined whether or not the automatic call is selected. If the automatic call is selected, the process proceeds to S39. If the automatic call is not selected, the process proceeds to S38. Proceed to.

In S38, it is determined whether or not the automatic incoming call mode is selected by an incoming call mode selection circuit (not shown). If the automatic incoming call mode is selected, the process proceeds to S52,
If the automatic incoming call mode has not been selected, the process proceeds to S66.

At S39, a call is made to the destination designated by the automatic calling circuit 22. Then, in S40, the signal line 2
8a to output a signal of signal level "1" to turn on the CML, and in S42 to S50, the V.8 based on the calling side. 8 procedures, V.I. 34 procedures; 34 image transmission is performed.

More specifically, the ANSam signal is received at S42, and the CM signal is transmitted at S44. Also, S46
Then, the JM signal is received, and in S48, the CJ signal is transmitted. Subsequently, in S50, V.V. The procedure of the calling side and the image transmission based on 34 are executed.

In step S52, information on the signal line 24a is input, and it is determined whether or not a call signal is detected. When the call signal is detected, it is determined that the called party is called, and the process proceeds to step S54, where the call signal is detected. If not, the process proceeds to S32.

In S54, a signal of signal level "1" is output to the signal line 28a to turn on the CML, and S56 to S6
At V.4, V.4 based on the called party. 8 procedures, V.I. 34 procedures,
V. 34 image transmission is performed.

More specifically, the ANSam signal is transmitted in S56, and the CM signal is received in S58. Also, S60
Then, a JM signal is transmitted, and in S62, a CJ signal is received. Subsequently, at S64, V.V. The procedure and image transmission of the called party based on S.34 are executed.

In FIG. 3, in S66, the signal line 24a
Input information, and determine whether a call signal is detected,
When the call signal is detected, the flow proceeds to S68 because the caller is the called side,
If the call signal has not been detected, the process proceeds to S74.

In S68, information on the signal line 4a is input, and
It is determined whether or not the user is off-hook. If the user is off-hook, the process proceeds to S70. If the user is not off-hook, the process proceeds to S66.

In S70, information on the signal line 20a is input, and it is determined whether the start key is pressed, that is, whether facsimile communication is selected. If facsimile communication is selected, the flow advances to S54 to execute facsimile communication. If not, the process proceeds to S72.

In S72, information on the signal line 4a is input, and
It is determined whether or not on-hook has been performed. If on-hook has been performed, the process proceeds to S32; otherwise, the process proceeds to S70.

In S74, information on the signal line 4a is input, and
It is determined whether or not the user is off-hook. If the user is off-hook, the process proceeds to S76. If the user is not off-hook, the process proceeds to S32.

In step S76, information on the signal line 20a is input, and it is determined whether the start key is pressed, that is, whether facsimile communication is selected. When the start key is pressed, that is, facsimile communication is selected. Then, the process proceeds to facsimile communication control on the calling side, that is, to S40, and if the start key is not pressed, that is, if facsimile communication is not selected, the process proceeds to S78.

In S78, information on the signal line 4a is input, and
It is determined whether on-hook has been performed. If on-hook is selected, the process proceeds to S32, and if on-hook is not performed, S76 is performed.
Proceed to.

Next, ITU-T Recommendation V. The procedure signals of the eight procedures will be described.

First, the calling menu signal 'CM' is a signal transmitted from the calling DCE, and is mainly used to indicate a modulation scheme available in the calling DCE. This CM
Is based on ITU-T Recommendation V. 21 defined in the low-frequency channel V.21. It consists of a 300-bit / s repetitive bit string modulated by 21 (L).

The CM terminator 'CJ' is a signal indicating that the JM signal has been detected and indicating the end of the CM signal.
This CJ has a V.I. of 300 bit / s. It is modulated by 21 (L) and is composed of all three consecutive "0" octets including a start bit and a stop bit.

The common menu signal 'JM' is a response DCE
And is used to indicate the modulation scheme commonly available for calling and answering DCE. This JM is described in Recommendation V. 21 defined in the high-frequency channel V.21.
It consists of a 300-bit / s repetitive bit string modulated by 21 (H).

Next, the encoding format of these signals will be described.

The signals CI, CM and JM are shown in Table 1 of FIG.
/ V. As shown in FIG. 8, a common encoding format is used. These signals are composed of a repeating bit sequence, and one sequence is composed of first 10 "1s", followed by a 10-bit synchronization code, and further followed by octets carrying information. Each octet is appended with a preceding start bit ("0") and a subsequent stop bit ("1").

The signal JM is the same V.V. Recommendation T.21 using H.21 (H) modulation. In order to avoid confusion with 30, a code constraint is imposed such that the HDLC flag (01111110) never appears in the bit arrangement.

Each octet belongs to one "information category". This coding format allows the information category to be extended for special applications, provided that the simplicity of the signal is preserved for most applications.

The first category of information in a sequence must be the calling function. In the following information categories, the order is not specified, and all information in one category is conveyed in one octet or, if necessary, one ordered octet sequence. .

Next, the category octet will be described.

The category octet is the first octet generated in the new information category, and is shown in Table 2 / V. As shown in 8, the information category is determined 4
It contains the sign of the bit (b0-b3). The format is as follows, and the displayed bits are transmitted from left to right.

Start bit (0) b0 b1 b2
b3 0 b5 b6 b7 stop bit (1) Bits b0 to b3 form a category tag with b0 as the least significant bit, and b4 is set to “0” so that the flag is not established. B5 to b7 are "option bits" of the information category.

The above three option bits b5 to b5
If there is not enough to represent a particular category in b7, any number of extended octets can follow immediately after the category octet. The format of the extended octet is as follows:

Start bit (0) b0 b1 b2
0 1 0 b6 b7 Stop bit (1) Bits b0 to b2, b6, and b7 are five bits added to the category at that time. Bit b4 is used to distinguish extended octets from category octets.
It is set to "1", and b3 and b5 are set to "0" so that the flag is not established.

Next, the calling function, modulation mode, protocol, and GSTN access will be described in order.

First, with regard to the calling function, FIG.
V. 8 shows how the three option bits in the calling feature octet are used to specify a particular calling feature.

Next, the modulation modes are shown in FIG.
V. The code of three octets represented by 8 specifies the available V-series modulation modes in GSTN. The setting to be available is limited only if the modulation mode is available in the displayed calling function and if one wishes to communicate the capability to the remote DCE.

Next, the protocol will be described with reference to Table 5 in FIG.
V. 8 is a code list inside the protocol category.

If the LAPM protocol code is indicated by CM, and the responding DCE receiving the
When the user wants to use the JM, the protocol octet indicating the LAPM is also transmitted in the JM.

Next, for the GSTN access, see Table 6 / V. Reference numeral 8 represents a code indicating a cellular access connected to the GSTN.

As described above, the ANSam signal and the JM signal are transmitted from the called side to the calling side, and the CM signal and the CJ signal are transmitted from the calling side to the called side.

[0059]

As described above, according to the first invention of the present application, even during manual transmission and manual reception,
Exactly V. 8 procedures can be performed.

According to the second and third aspects of the present invention, the V.V. 8 procedures can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart showing a control flow of a control circuit in the embodiment.

FIG. 3 is a flowchart showing a control flow of a control circuit in the embodiment.

FIG. FIG. 9 is an explanatory diagram showing a format of an eight-step preamble.

FIG. 5 shows a V.V. It is explanatory drawing which shows the information category of eight procedures.

FIG. 6 shows a V.V. It is explanatory drawing which shows the calling function category of 8 procedures.

FIG. It is explanatory drawing which shows the modulation mode of 8 procedures.

FIG. It is an explanatory view showing a code list of protocol categories of eight procedures.

FIG. 9 shows the V.V. FIG. 9 is an explanatory diagram showing GSTN access in eight procedures.

[Explanation of symbols]

 2 ... NCU, 4 ... telephone, 6 ... hybrid circuit, 8 ... modulator / demodulator, 10 ... ANSam signal transmission circuit, 12 ... addition circuit, 14 ... read circuit, 16 ... recording circuit, 18 ... memory circuit, 20 ... operation unit, 22: automatic calling circuit, 24: calling signal detecting circuit, 28: control circuit.

Claims (3)

(57) [Claims] 1. An ITU-T Recommendation V. In a facsimile apparatus capable of executing eight procedures, there is provided a paging signal detecting means for detecting a paging signal from a line, and when a paging signal is not detected when communication is selected,
A facsimile apparatus for transmitting a calling display signal or a calling menu signal and transmitting a modified response tone signal or a common menu signal when a calling signal is detected. 2. The system according to claim 1, further comprising a call detecting means for detecting a call from the own device, and transmitting a call display signal or a call menu signal when an automatic call is detected. A facsimile machine characterized by the above. 3. The method according to claim 1, further comprising an automatic incoming call mode, wherein when an automatic incoming call is received,
A facsimile apparatus for transmitting a modified response tone signal.