JPS6232675B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile image transfer method that prevents deterioration of image quality even if a received and output image is added to or corrected and retransmitted repeatedly.

In a general facsimile communication system, an image of a document or the like is transmitted as a facsimile image signal from one facsimile device to another facsimile device, and this facsimile image signal is received and the image is recorded and output. In such conventional facsimile communication systems, there are cases where an image once received and output is added to or modified and then retransmitted. For example, by signing a received document for approval, etc., transmitting it to the next facsimile device, and repeating this process among a plurality of facsimile devices, it is possible to perform the same procedure as if the documents were signed on a rotating basis. In addition, there are cases in which documents, etc., once received, are added or corrected and sent back.

However, if the received and outputted image is read and transmitted again by the facsimile device, the image quality deteriorates each time, making it impossible to read the details.

The present invention improves the above-mentioned drawbacks, and
The purpose of this is to prevent the image quality from deteriorating even if the received and output images are repeatedly added to or modified and retransmitted. Examples will be described in detail below.

FIG. 1 is a block diagram of an embodiment of the present invention.
The facsimile device 1 is provided with a storage device 2 and a change control device 3, and the facsimile image signal received via the line TL is sent to the control unit 6 of the facsimile device 1.
It is received and demodulated by the transmitter/receiver section 4 under the control of
An image is recorded on a sheet 7 by the scanning/reading/recording section 5, and a received facsimile image signal is stored in the storage device 2.

When a signature or the like is added to the paper 7 and input into the scanning/reading/recording section 5 of the facsimile device 1, the read information is added to the change control device 3 and stored in the storage device 2.
The additional information is written to the storage device 2 by the change control device 3. That is,
A difference between the received facsimile image signal stored in the storage device 2 and the read facsimile image signal of the transmitted image having an additional portion is detected, and the stored content of the storage device 2 is changed using the difference portion as additional information. . Then, the changed storage contents of the storage device 2 are subjected to processing such as modulation in the transmitting/receiving section 4, and the line TL is
Send to.

Therefore, the transmitted facsimile image signal has an additional part added to the received facsimile image signal, and is not a re-read image of the image once received and output, so the quality of the image received and output by the other party's facsimile device may deteriorate. There's nothing to do.

Note that a comparison between the stored contents of the storage device 2 in the change control device 3 and the read information obtained by reading the paper 7 by the scanning reading and recording unit 5 can be performed by, for example, checking the synchronization mark on the paper 7 at the time of reception and output. etc., and
By reading the synchronization mark etc. at the time of transmission,
It can be done synchronously. Further, by adding an additional part such as a signature to a predetermined area of the paper 7, the read information in that area can be additionally written into the storage device 2.

When transmitting for the first time, the information read from the scanning and recording section 5 is added to the transmitting/receiving section 4, and is transmitted as a facsimile image signal to the line TL without going through the storage device 2. Such control is performed by giving instructions to the control unit 6 by operating function buttons or the like.

FIG. 2 is a block diagram of another embodiment of the present invention, in which the same reference numerals as in FIG. 1 indicate the same parts, and 8 is a block diagram of another embodiment of the present invention.
CRT display device, 9 is a light pen, 10
is the keyboard. The processing of facsimile image signals received via the line TL is similar to the embodiment shown in FIG. 1, but the contents stored in the storage device 2 are added to the CRT display device 8 and displayed. Light pen 9 for this display content.
Additions and corrections are made by operating the keyboard 10, thereby adding and correcting the contents stored in the storage device 2. For example, the content stored in the storage device 2 is changed under the control of the change control device 3 by indicating the location to be added or modified using the light pen 9 and inputting the added or modified content from the keyboard 10. . Also, from keyboard 10 to CRT
The light pen 9 can also be omitted as a configuration for controlling the cursor of the display device 8 and the like.

When addition and modification of the received and outputted images are completed, an instruction to start transfer is given, and the contents stored in the storage device 2 are sent from the facsimile device 1 to the line TL as a facsimile image signal.

FIG. 3 shows a block diagram of still another embodiment of the present invention, in which a storage device 12 and a change control device 13 are provided on the exchange 11 side, a facsimile device 15a,
15b, . . . In this embodiment, the exchange 11 is instructed in advance to make additions, corrections, and transfers, and in accordance with the instructions, the exchange 11 communicates with the storage device 12 and change control device 13 via the special trunk 14. making a connection and making an exchange connection between the originating facsimile device and the designated terminating facsimile device;
A storage device 12 that transfers the facsimile image signal from the originating facsimile device to the terminating facsimile device and is connected via a special trunk 14.
The facsimile image signal is stored in the.

When additions and corrections are made to the image received and output by the incoming facsimile device and the image is sent again, the exchange 11 establishes a connection with the storage device 12 and the change control device 13 via the special trunk 14. , after the change control device 13 compares the storage contents of the storage device 12 and the retransmitted facsimile image signal and changes the storage contents of the storage device 12 for the difference, the storage contents of the storage device 12 are specified. Send to the receiving facsimile device.

Therefore, since the storage device 12 and change control device 13 are commonly provided on the exchange 11 side, there is no need to provide a storage device and change control device for each facsimile device 15a, 15b, . . . , thereby achieving economy. be able to. Furthermore, even if the transfer is repeated a plurality of times, the image quality will not deteriorate because the stored contents of the storage device 12 are transferred as facsimile image signals.

For the control of storing received facsimile image signals in the storage devices 2 and 12 in each of the above-described embodiments, ordinary means such as data reception and accumulation can be applied. For example, synchronized by a received synchronization signal, etc.
Control is performed to write received facsimile image signals sequentially in the order of scanning line numbers from the top address of the storage devices 2 and 12. Furthermore, when reading out the stored contents from the storage devices 2 and 12 and transferring them to the other party's facsimile device, the stored contents are read out in the order of scanning line numbers starting from the top address of the storage devices 2 and 12. Such control can also be realized by applying normal storage device control.

In addition, control for changing the storage contents of the storage devices 2 and 12 using addition and modification information is performed when positional information from a light pen 9 or the like is input directly to the change control devices 3 and 13, in a manner corresponding to the positional information. Address control of the storage devices 2 and 12 is performed to write addition and modification information. In addition, when identifying the added or modified information by comparing the read information of the added or modified image with the stored contents of the storage devices 2 and 12,
Since the write address of addition/correction information can be identified from the read address of the storage devices 2, 12 in case of mismatch, the contents stored in the storage devices 2, 12 can be changed accordingly.
These controls can be easily realized using controls similar to those used for reading and writing in general storage devices.

As described above, the present invention includes the storage devices 2 and 12 that store facsimile image signals, and the change control devices 3 and 13 that change and add to the storage contents of the storage devices 2 and 12 and identify modified information. is installed on the facsimile device side or exchange side, and when the received and output image is transferred after adding a signature or modifying the document content, it is possible to change and control the information on additions and corrections to the received and output image. Additional or modified information that is identified by inputting directly into the devices 3 or 13 from a keyboard or the like, or identified by comparing the read information of the image that has been added or modified with the stored content of the storage devices 2 or 12. is added to the storage devices 2 and 12, the stored contents are changed, and the changed stored contents are transferred to the other party's facsimile device, by repeatedly inputting and transmitting the received and output images to the facsimile device in sequence. too,
Since the stored contents of the storage devices 2 and 12 are read out and transferred as facsimile image signals, there is an advantage that image quality does not deteriorate compared to the conventional example in which facsimile image signals that are sequentially reread are transferred.

[Brief explanation of the drawing]

1, 2 and 3 are block diagrams of different embodiments of the present invention. 1, 15a, 15b are facsimile devices, 2,
12 is a storage device, 3 and 13 are change control devices, 4 is a transmitting/receiving section, 5 is a scanning/reading/recording section, 6 is a control section, 7 is paper, 8 is a CRT display device, 9
is a light pen, 10 is a keyboard, and 11 is a switching device.

Claims (1)

[Claims] 1. A facsimile image transfer device that adds or corrects received and output images and transfers the images is provided with a storage device that stores facsimile image signals and a change control device that controls changes to the storage contents of the storage device, When adding or modifying an image once received and output, the received facsimile image signal of the received and output image is stored in the storage device, and the addition or modification information to the received and output image is transferred to the change control. Identification is made by the device by comparing the stored contents of the storage device with read information of the image added or modified to the received and outputted image, or identification is made by direct input to the change control device, and the change control device A facsimile image transfer characterized in that the addition and modification information identified by is added to the storage device to change the storage contents of the storage device, and the changed storage contents of the storage device are transferred to the other party's facsimile device. Method.