JPS6351629B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for reducing or enlarging a document image (hereinafter referred to as
The present invention relates to a facsimile transmitter having a function of transmitting images with a variable magnification (generally referred to as variable magnification).

Conventional configurations and their problems Some facsimile transmitters have a function of changing the size of a document image. There are two methods for changing the magnification: one is optically changing the magnification using a document reading system, and the other is changing the magnification by processing the image information of the document image read by the reading system.

However, such conventional facsimile transmitters, no matter which of the above variable magnification methods are used, transmit only the image information of the original image, and only transmit the image information of the document image (the presence or absence of scaling, the magnification rate, etc.). etc.) is not added to the image information of the original image and transmitted. Therefore, the person who receives the received recorded image on the facsimile receiver side,
It is said that it is not possible to determine whether it is the original size image of the transmitted original, a scaled image, or at what magnification (reduction rate, enlargement rate) the image is scaled by just looking at the received recorded image. It was inconvenient.

OBJECT OF THE INVENTION An object of the present invention is to provide a facsimile transmitter that eliminates the above-mentioned inconveniences.

Composition of the Invention The present invention provides a facsimile transmitter having a variable magnification function, which includes a means for generating image information such as characters indicating the details of the variable magnification (presence or absence of variable magnification, magnification, etc.), and a means for generating image information such as text on a document image. By providing a means for adding image information to the image information, characters etc. representing the contents of the magnification change can also be recorded on the received recorded image reproduced on the facsimile receiver side.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic block diagram of a facsimile transmitter according to one embodiment of the present invention.

In the figure, reference numeral 1 denotes a document table, on which one or more documents to be transmitted are placed. This manuscript table 1
The upper document 2 is fed to paper feed rollers 3a and 3b by a paper feeding function (not shown), and is fed in the sub-scanning direction. In order to read the image of the document 2 while it is being fed by these paper feed rollers 3a and 3b,
A fluorescent lamp 4, lenses 5 and 6, and solid-state image sensors 7 and 8 are provided. The image of the original 2 illuminated by the fluorescent lamp 4 is formed on the imaging surface of the solid-state image sensor 7 by the lens 5 that constitutes one reading system, and An image is formed on the imaging surface of the solid-state image sensor 8 by the lens 6 . The image information signals of the original image are output from the solid-state image sensors 7 and 8, but the image information signal of the full-size image of the original 2 is output from one solid-state image sensor 7, and the image information signal of the reduced image line of the original 2 is output from the solid-state image sensor 7. The optical characteristics of the lenses 5 and 6 and their positional relationships with the original 2 and the solid-state image sensors 7 and 8 are determined so that the images are output from the other solid-state image sensor 8, respectively. In this embodiment, reduction is performed from B4 size to A4 size (or from A4 size to B5 size).

Reference numerals 9 and 10 are amplifiers that amplify image information signals from the solid-state image sensors 7 and 8; 11 is an amplifier 9 and 1;
This is a switch that selects an output signal of 0. The image information signal selected by the switch 11 is input to the memory 13 via the OR circuit 12 and temporarily stored therein. 14 is a code modulation circuit;
The image information signal output from the memory 13 is encoded to suppress redundancy, then modulated using a predetermined method and output. This code modulation circuit 14 also has a function of modulating and outputting a transmission control signal. 15 is a network control circuit, and the coding modulation circuit 1 is connected via this circuit.
4 and the demodulation circuit 16 are connected to a communication line 17.
The transmission control signal returned from the facsimile receiver (not shown) connected to the communication line 17 is
The signal is demodulated by the demodulation circuit 16 and input to the control circuit 18 .

The control circuit 18 decodes the transmission control signal from the facsimile receiver and generates the transmission control signal to be transmitted.Although the control signal is not shown in the diagram,
Control of the encoding modulation circuit 14 and the network control circuit 15, read/write control of the memory 13, control of a mechanism control circuit (not shown) (a circuit that controls the operation of mechanical parts such as the paper feed rollers 3a and 3b and the paper feed mechanism), etc. govern

Reference numeral 19 denotes a variable magnification control circuit, which controls the switch 11 and the character generator 20, determines the document size, and the like. Reference numeral 21 denotes a push button switch for manually instructing the magnification control circuit 19 to change the magnification (in this embodiment, only reduction). 22 and 23 are document table 1
These are well-known optical sensors attached to the zoom control circuit 19, and their respective output signals are input to the variable magnification control circuit 19.
There is an interface signal between the magnification control circuit 19 and the control circuit 18, which will be described later.

FIG. 2 is a perspective view of the document table 1. FIG. Reference numeral 24 denotes a guide plate, and the original placed on the document table 1 is fed while being guided by the guide plate 24 on one side.
The document table 1 has an opening 25 formed at a position covered by an A4-sized original, and an opening 26 formed at a position covered only by a B4-sized original.
The optical sensors 21 and 22 are mounted facing the openings 25 and 26, respectively.

The operation of the facsimile transmitter of this embodiment will be explained below.

FIG. 3 is a sequence diagram of the transmission control procedure,
This follows standard transmission control procedures for Group 3 equipment as recommended by the International Telegraph and Telephone Advisory Committee.

First, the facsimile transmitter (hereinafter referred to as
When the communication line 17 connection is established between the facsimile receiver (hereinafter referred to as "receiver") and the communication partner (hereinafter referred to as "receiver"), the
DIS signal is transmitted. This DIS signal is input to the demodulation circuit 16 via the network control circuit 15 and demodulated, and then input to the control circuit 18, where the information of the DIS signal is decoded. Here, it is assumed that the receiver is a standard model of group 3 and the recording paper size is A4 size. This can be recognized by the control circuit 18 by decoding the DIS signal, and the recording paper size (A4 size) is notified to the variable magnification control circuit 19.

Next, a DCS signal is output from the control circuit 18,
This signal is modulated by the encoding modulation circuit 14 and then sent to the communication line 17 via the network control circuit 15.
Following this, a training signal is sent to the communication line 17 via a similar route. When the receiver is instructed to receive by the DCS signal, it performs training for reception using the training signal that is subsequently received. Upon successful completion of this training,
A CFR signal is sent out from the receiver.

When the control circuit 18 detects this CFR signal,
Starts sending a message signal. That is, as in the conventional case, after starting reading the original image and buffering the read image information in the memory 13,
It is transferred to the encoding modulation circuit 14, where it is encoded and modulated, and then sent out to the communication line 17 through the network control circuit 15. At this time, the switch 11 and the character generator 20 are controlled by the scaling control circuit 19 as follows.

Immediately before starting to read the original image, the control circuit 18
A signal is sent from the magnification control circuit 19 to the magnification control circuit 19. Upon receiving this signal, the magnification control circuit 19 controls the optical sensor 2.
The size of the document 2 is identified from the output signals 2 and 23. That is, if only the output signal of the optical sensor 22 is on, the document size is determined to be A4, and the optical sensor 2
If the output signal of 3 is on, the original size is B4.
It is determined that The magnification control circuit 19 then receives the identified document size and receiver recording paper size (notified by the control circuit 18, here A4 size).
If they match, the switch 11 is set to the amplifier 9 side, and if they do not match, the switch 11 is set to the amplifier 10 side. Further, if this comparison does not match, the scaling control circuit 19 causes the character generator 20 to generate image information such as characters, which will be described later.

Now, assuming that the document 2 is B4 size, the variable magnification circuit 19 sets the switch 11 to the amplifier 10 side since the recording paper size is A4. Therefore,
Image information of an image obtained by reducing the original image from B4 size to A4 size is input to the memory 13. At this time, the item input to memory 13 is A4
The control circuit 18 is notified that the image information is a size image, and the control circuit 18 performs control corresponding to an A4 size image.

At this point, reading of the document starts, but during the period of scanning the upper margin of the document, the scaling control circuit 19 displays the character string "B4→A4" representing reduction from B4 size to A4 size. An information (character pattern) signal is generated from a character generator 20. Fourth
The figure is an explanatory diagram of this image information generation operation. That is,
Codes a ₁ to _{a 5} that specify characters B, 4, → A, 4,
The character generator 20 sends sub-scanning information specifying the line positions _l1 to _l7 of the character pattern and main scanning information specifying the column positions _S1 to _S6 in synchronization with the reading scan of the original image.
The image information signal of each character pattern is serially generated line by line. The image information signal output from the character generator 20 is ORed with the image information signal of the original image by the OR circuit 12 and input to the memory 13 . Therefore, the image information signal generated by the character generator 20 is added to the image information of the original image and transmitted.

FIG. 5 is a diagram showing the received recorded image in this case in comparison with the original image. In the figure, a is a document image (B4 size), and b is a received recorded image (A4 size). The character string "B4→A4" is recorded in the upper right margin of the received recorded image. From this string,
A person who receives a received recorded image can immediately know that it is an image obtained by reducing a B4 size document to A4 size.

If the document size is A4, which is the same as the recording paper size of the receiver, the magnification control section 19 sets the switch 11 to the amplifier 9 side, and also notifies the control circuit 18 of the A4 size. In this case, the magnification control circuit 1
9 does not operate the character generator 20, so only the image information signal of the original size original image is transmitted. Therefore, the above-mentioned character string is not recorded in the received recorded image, and the person who receives the received recorded image can know that it is the original image of the original size.

The recording paper size of the receiver is B4, and the original size is also
In the case of B4, the switch 11 is set to the amplifier 9 side, and only the image information signal of the original size original image is transmitted. Incidentally, the variable magnification control circuit 19 notifies the control circuit 18 that the size is B4, and the control circuit 18
performs control corresponding to B4 size.

Incidentally, when a reduction instruction is given by pressing the pushbutton switch 21, the variable magnification control circuit 19 unconditionally sets the switch 11 to the amplifier 10 side.
Then, if it is determined that the document size is B4 from the output signals of the optical sensors 22 and 23, the character string "B4
→A4" image information is generated from the character generator 20, and the control circuit 18 is notified of the A4 size. Also, if the document size is determined to be A4,
The image information of the character string "A4→B5" is generated from the character generator 20, and the control circuit 18 is notified of the B5 size.

Referring again to FIG. 3, when the transmission of the message signal as described above is completed, the control circuit 18
An EOM signal is generated, which is modulated and sent to the communication line 17. When the receiver receives this EOM signal, it returns the MCF signal and ends the facsimile communication. When the control circuit 18 of this machine receives the MCF signal through the network control circuit 15 and the demodulation circuit 16, it performs control to terminate the facsimile communication.

Although one embodiment has been described above, the present invention is not limited to this embodiment.

For example, the reading system for the original may be integrated into one, and the reading system may be configured to read the original image at several types of magnification by moving a lens or the like.
In this case, the switch 11 in FIG. 1 is unnecessary,
A magnification control circuit 19 controls the magnification of the reading system. Alternatively, the reading system may always read the original image at its original size, and the image information obtained thereby is passed through a scaling processing circuit to perform scaling processing to obtain variable scaling image information at a desired magnification. In this case as well, only one reading system is required and the switch 11 can be omitted. The variable magnification processing circuit is
For example, it can be provided between the OR circuit 12 and the memory 13, and the processing operation of this scaling processing circuit is controlled by the scaling control circuit 19. Incidentally, it goes without saying that the magnification change is not limited to reduction but may also be enlargement, and the magnification may be switched to several levels.

Also, when sending a document image in its original size without scaling, for example, "B4→B4" or "A4→A4", it will indicate that it is the original size (that the scaling ratio is 1).
Image information such as characters representing the image may be added to the image information of the original image and transmitted. The position to add image information such as characters representing the content of scaling is not limited to the upper margin of the original image, but can be selected at any position within the margin. Furthermore, image information such as characters representing a magnification ratio, such as "80%", may be added to the image information of the original image.

Furthermore, the present invention can also be applied to a facsimile transmitter/receiver.

Effects of the Invention As described in detail above, the present invention provides means for generating image information such as characters representing the content of scaling, and means for adding weight to the image information generated by this means to the image information of the original image. Since this is a configuration installed in the transmitter, characters etc. indicating the content of scaling are recorded on the received recorded image obtained on the facsimile receiver side, so the person who receives the received recorded image will be able to confirm that it is the original image. It becomes possible to easily recognize whether the image is a full-size image or a scaled image, and at what magnification the image has been scaled.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of a facsimile transmitter according to an embodiment of the present invention, FIG. 2 is a perspective view of a document table, FIG. 3 is a sequence diagram of a transmission control procedure, and FIG.
The figure is an explanatory diagram of the operation of generating image information such as characters representing the reduced content, and FIG. 5 is a diagram showing an example of a document image and its received recorded image in comparison. 1... Original table, 3a, 3b... Paper feed roller,
4... fluorescent light, 5, 6... lens, 7, 8...
Solid-state image sensor, 9, 10...Amplifier, 11...Switch, 12...OR circuit, 13...Memory,
14... Encoding modulation circuit, 15... Network control circuit,
16... Demodulation circuit, 18... Control circuit, 19...
Magnification control circuit, 20...Character generator, 22, 23
...Light sensor.

Claims (1)

[Claims] 1. A facsimile transmitter capable of transmitting image information of a magnified original image, which includes means for generating image information such as characters representing the contents of said magnification, and a means for transmitting image information generated by said means for said original image. A facsimile transmitter comprising means for adding image information.