JPS6271372A - Fax equipment using reception notice document - Google Patents

Abstract

PURPOSE:To improve the reliability of communication by sending a reception confirming notice document after picture data is received from a reception terminal equipment to an opposite party. CONSTITUTION:When document communication is finished and a reception notice is given from a RX side, a parameter of session inverting request is added to a RDEP and the transfer of transmission right to the RX side is requested transmission right is changed by a CSCC and a RSCCP. The RX side generates a routine sentence from a character code memory 14, the operator generates a document by a CDS command to send the reception notice document by a CDUI in a character code. When the transmission operator grasps the reception confirmation visually in this way, the reception notice document is sent from the reception side after the transmission of the documents.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention aims to improve the reliability of communication results in communications by telematics terminals such as facsimiles.

■Prior technology In recent years, telematics services (G
4 FAX, telex, etc.), and their services and control procedures are almost being determined.

In telematics services, conventional Gl, G2. G3
This makes it possible to provide highly functional services that are difficult to achieve with fax machines.

Further, the line used in the telematics terminal etc. is a non-telephone type service using a line such as IN5 (or I5DN), and the terminal operates as a terminal without a telephone set.

For this reason, on these terminals (as was previously the case)
This is a cause for concern for operators as to whether or not the documents sent by the sender to the receiver were reliably sent.

■ Purpose The present invention aims to solve the above-mentioned problems, and improves the reliability of communication by transmitting a reception confirmation notification document after the receiving terminal receives image data to the other party. It is something.

■Configuration Telematics service uses the following line PSDN (Pa
chet-5witched public Data
Network)C5DN(Circuit-3wi
tchcd public Data N+! twor
k) PSTN (Public 5w1tched Te
1ephone Network) ISDN (Tnte
grat, ed 5 services Digital
Nettyork (Service Integration Network) is about to provide services.

Among these, l5DN is the favorite in the future.

In Japan, lN5 (Infor [IIation Network
5ystell (Advanced Information and Communication System) is about to become available.

Here, the present invention will be explained using G4 FAX.

FIG. 1 is a diagram showing a G4 FAX control procedure according to the present invention.

G4 For FAX, C3 is used due to the amount of information, speed, etc.
DN, IN, S (D5DN) are suitable.

These lines have a high bit rate and are error-free due to the +1DLC (High Level Data Link Control) control procedure, making them easier to use than conventional Gl and G lines.
2. This enables high-speed, high-quality transmission that was not possible with G3 telephone lines.

When the line speed is high, the time for actual image information transfer, procedure control before image information transmission, and post-procedure control after image information transmission greatly contributes to the overall communication time efficiency.

In general, in communications, buffering is performed where necessary as shown in FIG. 2 in order to efficiently transfer image information while matching the speed of the input/output device and the line speed.

In FAX, when all image information received in response to page boundary commands (including CDE) from the sending side has been recorded and output,
Conventionally, an acknowledgment (response) is sent back. FIG. 1 shows an example of a control procedure for two pages of image information by continuous transmission.

Generally, in order to increase the efficiency of line usage in communications, buffering using memory or the like is performed on the input/output device and the system for sending data to the line and for receiving data from the line.

FIG. 2 is a diagram showing the configuration of a FAX terminal according to the present invention, in which 1 is a system control unit (S, C, U);
2 is a communication control unit (CCU), 3 is a reading unit (V,
P, U), 4 is a recording unit (S, C0υ), 5 is an operator interface unit (0, P, U), 6 is a transmitting step motor, 7 is a receiving step motor, 8 is a line, 11
12 is a line memory (L, M), and 12 is an encoding/decoding unit (c
ooEc), 13 is a buffer memory (B, M), 14 is a character code memory (C, M), and 15 is a flow buffer (F, B).

For FAX, line memory 11. Buffer memory 1
3. Flow buffer 15 etc. are required.

In the system shown in FIG. 2, a system control unit 1 controls a communication control unit 2, a reading section 3, and an operator interface unit 5.

Also, a reading section 3 is located inside the system control unit 1.
It has a cog that generates encoded data by suppressing redundancy from the image information received, and a decoder that decodes the encoded received data and reproduces it into the original image information.

The encoding/decoding unit 12 is a combination of a CORG and a decoder.

Communication control unit 2 is system control unit 1
In response to the command, a control procedure for communicating with the other device through the line 8 is executed.

The 64 procedure is a hierarchical procedure based on the 7-layer DSI model of the ISO standard.

Next, the flow of the control procedure for normal image signal transmission and reception will be explained using FIG.

■Call connection setting Generally, the procedure for establishing a call with a partner station is performed using the network provided by the carrier (NTT in Japan).

Network used (PSTN, PS[)N, C3DN,
l5DN (INS)) &: Determined.

■Data link layer setting The data link layer uses the HDLC control procedure recommended by CCITT.

A link layer connection is established using SABM: Set ABM mode and IJA: Unnumbered Accept.

■Transport layer settings The transport layer is set as CR (Transport Connection).
Request) TCA (Transport C
A connection is established by (Connection Accept).

Also, the data block size of each device is negotiated here, and the number of octets of the data block used during communication (
number of bytes).

■5essj, on layer setting C3S (C55(CoIIl 5ession 5ta)
rt) R5SP (Response 5ession
5tart Po5itive) to establish a connection.

Also, here, you can exchange the ID, abbreviation, etc. of the Ryojo device, and
nd 5ize, the presence or absence of screen memory, etc.

■Document settings CDCL (Com+nand Document Ca
ability Li5t) RDCLP (Respo
nse Document Capability L
i5t Positive) CDS (Command D
5tart) to establish a document layer connection.

CDLC and RDCLP notify each other of the capabilities of each other's devices.

Then, document communication is started using the CDS.

■Image information transfer Here, since the connection with the other party has been set by
r Information) IIEADER is added, passed to the lower layer, and sent to the @ line as image information. (HEAI also in lower layers) ER processing is executed in each layer. ) where the First C of the page
Mode settings for each page are performed using the DUI. (★ in Figure 1
1, 2) The first command on page 2 contains parameters (information) of the presentation layer, which are document layout descriptor, page layout descriptor, text, unit, etc. the document and page mode (e.g. C0DEC mode,
linear density, etc.) is specified.

Further, the image data in CDtJI includes the length of the image data as seen from the presentation layer as a header, using text information which is a parameter of the text unit of the presentation layer.

Transmission: Image data from the reading section enters the line memory 11, is encoded by the encoder/decoder 12, and is stored in the buffer memory 13.

The data in the buffer memory 13 is sent to the communication control unit 2 and stored in the flow buffer I5 of the communication control unit 2.

As a result, in the communication control unit 2, the flow buffer 1
The encoded data entered in 5 is passed to the document layer, processed by HEADER, and sent to fi8.

During transmission, line memory 11 and buffer memory 1
In step 3, buffering between the reading speed and the encoder/decoder speed is performed. Further, the buffer memory 13 and the flow buffer 15 perform buffering between the speed of the encoder/decoder 12 and the speed of the line 8.

Reception: Data received from the line is removed from HEADEH in each layer within the communication control unit 2, and stored in the flow buffer 15 as encoded data.

The encoded data in the flow buffer 15 is transferred to the buffer memory 13, encoded by the encoder/decoder 12, and transferred to the line memory 11. The recording is then reproduced by the recording section 4.

During reception, the flow buffer 15 and buffer memory 13 perform buffering between the line speed and the speed of the encoder/decoder 12. And line memory 11
The buffer memory 13 performs buffering between the recording speed and the encoder/decoder speed.

■Page boundary and document end■ When the first page has been sent, if there is still a document to be sent next, CDPB (Command Document Pag)
e Boundary) to notify the receiving side of the end of the page.

If the current page is the last page, CDE (Commaided Document End)
This notifies the end of document 1~.

On the other hand, from the receiving side, RDP is sent to CDPB.
BP (Respoyse Document Page
For Boundary Po5titive) CDH, RDEP (Rssponse Document En
d Po5itive).

In addition, a page number parameter is attached to these commands/responses (hereinafter abbreviated as C/R), which allows page management and Wi
Communication can be managed using nd 5ize.

The above response is an affirmative response, and if the page could not be received correctly, RDPBM (Response Document P
age Bouydary Negative) is used.

CDE and RDEP terminate the document layer connection.

■Session End C3E (Command 5ession End)R
5EP (Response 5ession End
The session connection is terminated using Po5itive.

The end of the transport layer is simultaneous with the end of the session layer.

■Link layer termination DISC (Diss Connect) UA (Unnu
The link layer connection is released by ``MBERED ACCEPT''.

[Phase] Call disconnection setting - Release the call on the line that is on hold due to the end of communication.

Similar to (2), the procedure is determined by the network used.

The procedure for 04 FAX has been explained above. The document communication ends with CDE and RDEP.

FIG. 3 is a diagram showing a control procedure for reception notification in the present invention.

Here, when receiving notification from the RX side, RD
Add session reversal request parameters to EP and RX
Request that the transmission right be transferred to the side.

As a result, the transmission right is changed by C3CC and R5CCP, and the RX side transmits a reception notification document using a fixed form or the like.

In this case, a fixed form sentence is generated from the character code memory 14 shown in FIG. Acknowledgment documents can be created in two ways:

(Convert from D character code to Pel information and FA
How to send using X encoding.

■Send with the character code itself, and use Pe on the receiving side.
How to replace l.

In this embodiment, as shown in FIG. 3, the operator document is activated by the CDS command and the above method (2) is carried out.

In addition, the reception notification document can be executed by (a) using the settings of this service on the receiving side.

(b) A possible method is to execute this service by specifying the sending side.

In this embodiment, as a method of execution according to the will of the sending side (operator), an instruction to execute a reception notification is issued as a private parameter in the CDS parameters of FIG. 1.

The receipt notification document shown in FIG. 3 is transmitted in character code using the CDUI.

At this time, the mode specification for character code reproduction (character height and width size, character spacing, line spacing, etc.)
Put it in the ★ mark on the CDUI shown in the figure and send it. Here, ★
The mark indicates that the vertical and horizontal sizes of the characters of the character code, line spacing, designation, etc. are to be performed in the CDUI.

Further, this character code may be reproduced by outputting it to a record or by outputting characters onto a display.

■Effects As explained above, the present invention allows the sending operator to specify (
CDS parameters) and can be realized by receiving a reception notification document from the receiving side after sending the document.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the control procedure of G4 FAX in the present invention, FIG. 2 is a diagram showing the FAX terminal configuration in the present invention,
FIG. 3 is a diagram showing a control procedure for reception notification in the present invention. 1...System control unit. 2...Communication control unit, 3...Reading section, 4...Recording section, 5...Operator interface unit, 6...Transmission step motor, 7...Reception step motor, 8... line. 11... Line memory, 12... Encoding/decoding unit, 13... Buffer memory, 14... Character code memory. 15... Flow buffer. Figure 2 Figure 3) \Iraqda code

Claims (3)

[Claims] (1) A FAX device using a reception notification document, which is characterized in that after document communication, the communication result is transmitted from the receiving side to the sending side. (2) FAX using a reception notification document according to claim (1), characterized in that the reception notification document is transmitted by an operator document of a telematics terminal.
Device. (3) A FAX device using a reception notification document as set forth in claim (1), wherein execution of a reception notification service is designated by an instruction from a sending side.