JPS6380676A - Data communication equipment - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field] The present invention relates to a data communication device.

[Conventional example] Conventionally, in this type of device, for example, a facsimile machine, image data is received, the received data is stored in a memory, and after all received data has been stored in the memory,
There are devices that play back received data in memory.

In the case of such a device, it is not known whether the received data can be reproduced until the communication is completed and the data is actually reproduced. Therefore, there was a drawback that the transmitting side could not know whether the transmitted data was reproduced on the receiving side.

[Objective] The object of the present invention is to eliminate the drawbacks of the above-mentioned conventional example, and
The objective is to provide an efficient and reliable data communication device.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of an integrated document processing system to which the present invention is applied.

1 in the figure is a display section for displaying the contents of the display storage section;
Reference numeral 2 denotes a key manual unit used for creating and editing documents; 3 a display storage unit that stores information to be displayed on the display unit l; 4
D controls DMA transfer between each storage unit and input/output device.
MA control device, 5.6 is an image input/output device for inputting and outputting images, 7 is a human output control unit that controls the image input/output device 5.6, 9 is a main bus (M bus), and each bus is connected to this bus. Blocks are connected. 10 is an auxiliary storage unit that stores a large amount of document information; 11 is a control unit (MPU) that controls the entire system; 12 is a control storage unit that stores MPt+11 operation control procedures and control information; and 13 is a document storage unit. creation of,
1 image storage unit for editing and input/output of image information; 14;
is a compression/expansion unit for compressing/expanding image information.

In the above configuration, document creation and editing are processed as follows. First, image information is manually inputted from the image input device 5 by the input/output control section 7, and is stored in the image storage section 13 by the DMA control device 4. This image information is reduced to 1/4 by the DMA control device 4, transferred to the display storage section 3, and displayed on the display section 1. The operator looks at the display section 1 and instructs editing using the key human power section 2, and the MPU II executes this instruction to edit the image information.

Regarding character information, the operator inputs a code from the key input section 2, the MPU II interprets this, and develops the font pattern of the character in the display storage section. MPUI
I stores the input or edited character string in the control storage unit 12 as a code. When the creation of one page of document is completed, the image information is compressed by the compression/expansion section 14, and the character information is stored in the auxiliary storage section 0 as a code string.

The structure and control information of the document is shown in FIG.

This structure has a tree structure in accordance with CCITT Recommendation T73, where documents refer to pages and pages indicate dependent blocks. A block refers to an actual text unit (textual or image information) and also contains user reader pull comments.

The text unit contains actual character strings and image information.

When transmitting an existing document according to this structure, it is transferred from the auxiliary storage section 10 to the communication section 8 using the DMA control device 4, and is transmitted together with control information.

In the receiving side device, the MPU II, which has been notified of the reception of data from the communication section 8, uses the DMA control device to transfer the data from the communication section 8 to the auxiliary storage section 1o.

The processing on the receiving side will be explained below using the flowchart shown in FIG.

In Sl, the document information is analyzed and the referenced page identifier is obtained. In S2, the page information is analyzed to obtain a block identifier. In s3, the block information is analyzed, and in S9 it is checked whether the text unit is a character or an image.If it is a text, the text information is analyzed in S5, and based on this, the character code is converted into a font pattern in 86 and specified. The image is developed in the image storage unit 13 according to its position and size. In the case of an image, the image information is analyzed in s7, and based on this, it is expanded at the specified position and size via the compression/expansion unit 14 in s8, and expanded into the image storage unit.

Next, in step 39, it is checked whether an error has occurred during text/image expansion. Possible causes of this error include the absence of a corresponding font pattern, or an error in the compression/expansion section 14.

If an error occurs, the error information is set in the corresponding block of the received document in the auxiliary storage unit 10 by adding a user reader pull comment in S10.

Then, a document return flag is set in Sll. If there is no error, go to S12. In S12, it is checked whether all block processing has been completed, and if not, the process returns to S3.

If it has been completed, the process goes to step 313, where the input/output control device 7 is instructed to output the information developed in the image storage section 13 to the image information output device 6.

Next, in step 314, it is determined whether or not all pages have been processed, and if not, the process returns to S2 and the next page is processed.

If the process has been completed, the document return flag is checked in S15 to determine whether there is any information that cannot be output. If all output is normal, the process ends. If the document cannot be output, the document with error information stored in the auxiliary storage unit IO is sent back to the sending side in 316.

Next, in step 317, the document return flag is cleared and the process ends this winter.

In this embodiment, when the receiving side cannot output, all documents are sent back to the sending side, but it is also possible to send back only the page where the error occurred, only the block, or only the error information.

Also, instead of sending the message back unconditionally, it is also possible to negotiate with the sender and then send it back.

Further, instead of sending back the document, information indicating that an error (abnormality) has occurred, the name of the document, and information indicating which page the error occurred may be sent back.

Although this embodiment has been described with respect to a mixed mode terminal, the present invention is not limited to mixed mode terminals; the present invention can be applied to any data communication device that stores received data in a memory and outputs the received data in the memory after data reception is completed. It is possible.

As described above, by adding error information and sending the document back to the sending side, it becomes easier for the sending side to analyze a document with an error, and it is possible to quickly take action and improve efficiency.

In addition, in this embodiment, the document sending/receiving process ends normally;
Thereafter, errors detected when outputting the received document can be notified to the sending side, improving reliability.

[Effect] As described above, according to the present invention, the receiver (
Errors detected when outputting i-data can be notified to the sending side, improving reliability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a data processing apparatus to which the present invention is applied, FIG. 2 is a structural diagram showing the structure of a document to which the invention is applied, and FIG. 3 is a flowchart showing processing on the receiving side. In the figure, 1-m-display section, 2-m-key manual section, 3-m-display storage section, 4-1-DMA control device, 5-m-image information output device, 6--image information input Device, 7---Person output control section, 8
-m-communication department, 9-m-main bus (M bus), 10-
m-auxiliary storage unit, if---MPU, 12-m-control storage unit, 13-m-image storage unit, 14-11 compression/expansion unit.

Claims (1)

[Claims] Data receiving means for receiving data; storage means for storing the received data; and output means for outputting the received data stored in the storage means after receiving the data; A data communication device comprising: means for detecting an abnormality in the output of received data by the output means; and means for transmitting information indicating the abnormality in the data output to a destination of the received data in accordance with the output from the detecting means. Device.