JPH05130437A - Communication terminal equipment - Google Patents

Abstract

PURPOSE:To ensure accurate transmission by providing an abbreviation reception function to a sender side communication terminal equipment and an abbreviation return function to a receiver side communication terminal equipment so as to confirm whether or not a box number is a confidential box number intended by a sender side. CONSTITUTION:A CPU control circuit 2 has a ROM section and a RAM section to control the entire system. A sender side communication terminal equipment is provided with an abbreviation reception function receiving a confidential box abbreviation from the receiver side registered in the reception side corresponding to the confidential box number designated by the sender side. When a request of confidential communication comes from the sender side to a receiver side communication terminal equipment, an abbreviation return function returning the abbreviation registered in the confidential box on request to the sender side is provided. Thus, the sender side recognizes the confidential box abbreviation of the receiver side at the communication of a confidential text. Thus, the sender side confirms whether or not a box number is a confidential box number intended by the operator at the sender side and accurate transmission is ensured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to confidential communication in a communication terminal device.

[0002]

2. Description of the Related Art Conventionally, when confidentially transmitting from a communication terminal device, only the confidential box number on the receiving side is designated and transmitted. On the other hand, the communication terminal device for confidential reception checks only whether or not the confidential box number designated by the transmission side is valid, and notifies the transmission side whether or not reception is possible.

[0003]

However, the above-mentioned conventional example has a drawback in that the transmitting side cannot confirm whether the confidential box number of the other party is the confidential box to be transmitted.

It is an object of the present invention to provide a communication terminal device capable of confirming whether or not a confidential box number is intended by a transmitting side in secure communication and ensuring accurate transmission.

[0005]

SUMMARY OF THE INVENTION The present invention provides an abbreviation receiving function for receiving from a receiving side a confidential box abbreviation registered in the receiving side corresponding to a confidential box number designated by the transmitting side in a transmitting side communication terminal device. In addition to the above, the receiving side communication terminal device is provided with an abbreviation returning function for returning the abbreviated name registered in the requested confidential box to the transmitting side when the transmitting side requests confidential communication.

[0006]

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

In this embodiment, a color / monochrome facsimile apparatus connected to an ISDN network will be described as an example.

In FIG. 1, a CG (character generator) circuit 1 is a circuit for generating characters to be printed on a communication report, a page header or the like.

The CPU control circuit 2 is a circuit that has a ROM section and a RAM section and controls the entire system.

A DAM (Direct Memory Access) control circuit 3 is a circuit for transferring image data between memories without passing through a CPU.

The color / monochrome conversion circuit 4 has a γ conversion circuit for converting a CMYK image into an RGB image and an RGB image into a CMYK image, and converts a color image into a monochrome image.
This is a circuit for converting a multi-valued image into a binary image.

The frame memory 5 is a memory for expanding image data for each block.

The communication control unit 6 controls a call to / from a partner terminal and transmission / reception of image data using a communication protocol.

The I / O controller 7 controls the key input device 8, the display device 9, the scanner device 10 and the printer device 11.

The key input device 8 is a device that has, for example, a one-touch key, a ten-key pad, a start button, and a stop button, and receives instructions from the user through various key inputs.

The display device 9 is a device for displaying various messages to the user by displaying a message on the LCD and turning on / off the LED to notify the user of various information such as memory full, no paper, out of ink and communication status. Is.

The scanner device 10 is a device for reading a document in a designated mode such as paper size, characters / photographs, density, color / monochrome, etc.

The printer device 11 is a device for outputting image data and character data on recording paper.

The image coding / decoding circuit 12 is a circuit for compressing and expanding color and monochrome image data.

Scsi (Small Compuetr System Interf
ace) 13 controls the interface with the hard disk.

Further, this system has a non-volatile memory 14 represented by a hard disk, an image data bus 15 as an image path, a system bus 16 for controlling the entire system, and the like.

FIG. 2 shows the CS used in the communication of this embodiment.
S (command session start) command and RSSP
It is a schematic diagram explaining the parameter format of a (response session start positive) command.

In the figure, the first field F1 is a CSS command, the second field F2 is a CSS parameter,
The third field F3 is a non-standard function (NSC) parameter in the CSS parameters, and the fourth field F4 is
The field storing the confidential box number in NSC, the fifth field F5, is the RSSP command, the sixth field.
A field F6 is a parameter of RSSP, a seventh field F7 is a non-standard function (NS) in the RSSP parameter.
The parameter C), the eighth field F8, is a field in which the confidential box abbreviation in NSC is set.

FIG. 3 is a flow chart showing the transmission sequence in this embodiment.

First, the operator inputs a partner terminal number, a confidential box number, an abbreviation and the like from the key input device 8 and gives an instruction to start transmission.

As a result, the facsimile machine starts transmission based on the operator's instruction (S11), connects layers 2 to 4 using the communication control unit 6 (S12), and sends the confidential box number to the NSC which is a CSS parameter. Is set, and the command CSS is sent to the receiving side terminal (S1
3).

Next, the RSSP from the receiving side terminal is received, and the presence or absence of NSC is checked in the parameter (S1
4) If there is an NSC, check whether or not there is a parameter indicating the confidential box abbreviation in this NSC (S
15) If there is, the received confidential box abbreviation is compared with the abbreviation designated by the operator at the time of transmission (S16), and if they match, a CDCL (command document capability list) command is sent, and image data of the image data is sent. Transfer is performed (S17).

That is, first, after waiting for the RDCLP (response document capability list positive) command, the CD (command document start) command is sent, and then the transfer of the image data is divided into a plurality of CDUI commands.

When this is completed, CDE (command document end) transmission, RDEP (response document end positive) command reception, C
Send SE (command session end) command, R
Upon receiving the SEP (Response Session End Positive) command, the layers 2 to 4 are disconnected in S18, and the process ends in S111.

If there is no NSC in the CSS parameter in S14, or if there is an NSC in S15,
If there is no confidential box abbreviation inside, the contents of the soft switch are checked in S110, and if the mode is for disconnecting the communication, after transmitting the CSE command, waiting for the reception of the RSEP command, the process proceeds to S18.

In S110, if the communication is not disconnected, after transmitting the CDCL command,
The image data is transmitted after waiting for the RDCLP command (S17). The soft switch is set by the operator using the key input device 8 in advance.

If the received confidential box abbreviation does not match the abbreviation designated by the operator in S16, the received confidential box abbreviation is displayed on the operation panel (S19), and the process proceeds to S110.

FIG. 4 is a flow chart showing the reception sequence in this embodiment.

First, when an incoming call is received in S21, layers 2 to 4 are connected using the communication control unit 6 (S22), and CS
Wait for S to be received, and then the CSS parameter N
The presence or absence of the SC is checked (S23), and if there is, the presence or absence of a parameter indicating the confidential box number in the NSC is checked (S24). If there is, it is checked whether or not the received confidential box number has been registered. (S25) If already registered, the abbreviated name registered in the confidential box designated to the transmission side is set in the NSC of RSSP, RSSP is transmitted to the transmission side terminal (S26), and the CRCL command is transmitted and R is sent.
After receiving the DSLP command, the process proceeds to receiving the image data in S28.

That is, first, when the CDS command is received and the image data is divided into a plurality of CDUI commands to be received, the CDE command is received. Then RDEP
Commands are transmitted, CSE commands are received, RSEP commands are transmitted, and layers 2 to 4 are disconnected (S2
9) and ends at S210.

If there is no NSC in the CSS parameter in S23, or if there is no confidential box number in the NSC in S24, or if the confidential box designated in S21 is not registered, RSSP in S27. N
The RSSP is sent to the transmitting side terminal without setting the abbreviation for SC.

In the above embodiment, the session layer CSS and RSSP parameters NSC are used, but CDCL and RDCLP parameters NS are used.
C may be used. Further, although the color facsimile is used in the above-mentioned embodiment, the present invention can be similarly applied to the monochrome facsimile.

[0038]

As described above, according to the present invention,
The confidential box abbreviation of the receiving side can be known by the transmitting side during confidential communication, so that the transmitting side can confirm whether or not the confidential box number is the operator's intention, and there is an effect that accurate transmission can be secured.

[Brief description of drawings]

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

FIG. 2 is a schematic diagram showing a format example of CSS and RSSP according to the above embodiment.

FIG. 3 is a flowchart showing a transmission operation of the above embodiment.

FIG. 4 is a flowchart showing a receiving operation of the above embodiment.

[Explanation of symbols]

 1 ... CG circuit, 2 ... CPU control circuit, 3 ... DMA control circuit, 4 ... Color / monochrome conversion circuit, 5 ... Frame memory, 6 ... Communication control unit, 7 ... I / O control unit, 8 ... Key input device, 9 ... Display device, 10 ... Scanner device, 11 ... Printer device, 12 ... Image encoding / decoding circuit, 13 ... Scsi interface, 14 ... Hard disk, 15 ... Image bus, 16 ... System bus.

Claims (7)

[Claims] 1. In a communication terminal device having a function of transmitting a message by designating the number of a confidential box on the receiving side according to an operator's instruction, a confidential information designating function for the transmitting operator to designate a confidential box number and its abbreviation. And a; an abbreviation receiving function of receiving from the receiving side the confidential box abbreviation registered on the receiving side in correspondence with the confidential box number designated by the transmitting side; 2. In a communication terminal device having a plurality of confidential boxes and capable of registering an abbreviation in each confidential box, when a confidential communication request is made from the transmitting side, the confidential box is registered in the requested confidential box. A communication terminal device having a function of returning an abbreviated name to a transmitting side. 3. The communication terminal device according to claim 1, wherein the box number and abbreviations are exchanged using NSC which is a parameter of CSS and RSSP of a session layer in 7 layers of OSI. .. 4. The communication terminal device according to claim 1, wherein the confidential box abbreviation received from the receiving side is compared with the abbreviation designated by the operator. 5. The communication terminal device according to claim 4, wherein if the abbreviations of both do not match completely or partially as a result of the comparison, communication is disconnected. 6. The method according to claim 4, further comprising setting means for selectively setting whether to disconnect or continue the communication when both abbreviations do not completely or partially match as a result of the comparison. A characteristic communication terminal device. 7. The abbreviation of the confidential box received from the receiving side according to claim 4, when the abbreviations of the two do not match completely or partially as a result of the comparison, A characteristic communication terminal device.