JPH0391361A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To match a video screen with different size or density, etc., with a facsimile transmission picture by reproducing the video input pattern subjected to broadcast standardization standards in the picture memory area of facsimile standards. CONSTITUTION:When the storage of a pattern is finished, a program sets a synchronous signal generating circuit 8 to the mode of a signal suitable for the paper size of the facsimile standards, sets a CODEC 5 to a prescribed coding system and sets the address counter of a buffer memory 3 to the 4-fold mode. Thus, a readout pattern is magnified as a multiple of 4. Moreover, an address of a transmission area is set to a video memory 6. Then a masking section 4 and the CODEC 5 are started and a picture reading a 4-fold picture of the still video pattern from the memory 3 and coding it is stored in the video memory 6. Furthermore, when the input of the still video pattern is finished, a CCU 10 is started to start the communication to send the picture stored in the memory 6 to a line 12 by the prescribed number of sheets, and then the operation is made complete.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device that inputs a reproduced video image, converts it into a facsimile signal, and transmits the facsimile signal.

[Prior Art] Various still image transmission devices have been proposed for transmitting, for example, reproduced images from a still video camera, but no device capable of transmitting images as a facsimile device has yet been proposed.

FIG. 6 is a schematic diagram conceptually showing a configuration for transmitting images by a still image transmission device.

This still image transmission device converts an image reproduced from a disk of a methyl video camera into compressed data using a predetermined method, and sends it to the other party's still image transmission device according to a predetermined procedure. Furthermore, the still image transmission device on the other end expands the received image and stores it on the disk of the still video camera. Furthermore, each still image transmission device is provided with a display that displays a still video screen to be transmitted.

[Problems to be Solved by the Invention] However, in the past, transmission procedures and image information compression methods were not unified, and there were various output methods such as monitor televisions and video printers. There was a problem of lack of versatility, as communication was not possible unless the models were of the same company. This problem occurs not only in still videos but also in high-definition videos, for example.

SUMMARY OF THE INVENTION An object of the present invention is to provide a facsimile device that can effectively transmit the screen of a methyl video camera.

[Means for Solving the Problems J] The present invention is a facsimile device having a configuration for inputting a broadcast-standardized video signal, which enlarges the input screen of the video and converts it into a code compatible with the facsimile standard. It is characterized in that it is stored in a memory area and that a blank space that occurs between a broadcast-standardized image and the image memory area is converted into a code as white or another single color.

+ν [Function] In the present invention, by reproducing a broadcast-standardized video input screen into the facsimile-standard image memory area, it is possible to adapt video screens of different sizes and densities to facsimile transmission images. For example, it is possible to obtain standardized video screen communication with other types of facsimile machines compliant with CCITT. In particular, by enlarging the video screen, it is possible to obtain an image that is easy to view, and by making the margins that appear when the video screen is played back in the facsimile image area white or another solid color, the transmitted image can be made into a facsimile image area. Encoding allows for high compression and efficient transmission.

[Example] FIG. 1 is a block diagram showing one embodiment of the present invention.

A methyl video player (SVP) 1 plays back images from a floppy disk or the like taken with a still video camera. In addition, still video interface 7
t/f) 2 converts the video signal from the 5vPl (in this case, three color signals of R, G, and H) into a digital signal and controls the 5VPI.

The buffer memory 3 temporarily stores the digital video signal from the S V i / f 2, and stores one frame of still video (768 x 480 = 360 Kbit).
It has a capacity for two sheets of paper for each of the three colors R, G, and B, and when reading out the image, the readout address is adjusted based on the readout timing from the synchronization signal generation circuit 8, which will be described later. The purpose of this project is to expand the

When reading the image from the buffer memory 3, the masking section 4 reproduces the enlarged image within the facsimile standard image area according to the synchronization signal from the synchronization signal generation circuit 8, and turns the margin of the image white. This applies masking.

The codec 5 converts the image reproduced according to the facsimile standard by the masking unit 4 into facsimile codes (MH, MR, MM).
R).

The video memory 6 stores video signals converted into facsimile codes, and has memory for 33 colors, R and G.

Scanner/printer interface (S/Pi/f) 9
performs the scanner and printer interface. The scanner/printer 11 consists of a scanner that reads a document and a printer that outputs recording paper.

A synchronization signal generation circuit 8 synchronizes when reading data from the buffer memory 3, and synchronizes the masking section 4 and the codec 5.
Generates a synchronization signal to

The communication control unit (CCU) 10 interfaces with the circuit 11112 and transmits images in the video memory 6.

The CPU 7 has a ROM, a RAM, etc., executes various processes based on programs in the ROM, manages the operations of each of the above elements, and controls the entire device. In addition,
The main bus (MBUS) 13 is under the control of the CPU 7.

FIG. 2 is a flowchart illustrating the overall operation of this embodiment.

First, it is activated by the program of the CPU 7, and when the operator selects to transmit a still video screen based on an operation instruction from an operation panel (not shown), the program sets a command to activate 5vpt in S Vi / f 2 (sl ). As a result, 5VP1 is activated and reads out the still video screen (S2). This screen information becomes the RGB signal of the video interface,
It is A/D converted by S V i /f2 and stored in the buffer memory 3 (S3).

At this point, the CPU 7 must determine whether or not it is a two-screen input (S4).
, if inputting 2 screens, set the next screen read command to SV i/f 2 and store the next screen in the second buffer memory 3. (S6).

When the screen storage is completed, the program sets the synchronization signal generation circuit 8 to a timing corresponding to the paper size of the desired facsimile standard (S7), and sets the codec 5 to a predetermined encoding method (S7). S
8). Also, set the address counter of buffer memory 3 to 4.
Set so that it doubles (S9). As a result, the readout screen will be enlarged four times. Furthermore, the address of the transmission area is set in the video memory 6 (S10).

Then, start the masking section 4 and codec 5.
l l) A quadruple image of the still video screen is read out from the buffer memory 3 (S12), and the encoded image is stored in the video memory 6 (S13). In the case of 2-screen input (S14), /<Rahua memory 3 is set to 2
515), the process returns to 311 and the read operation is repeated.

Next, check whether input on the still video screen is finished (S l 6), and if it is not finished, S
A command is set to V i/f 2 to input the next screen (517), and the process returns to S2.

Furthermore, when the input of the still video screen is completed, the process moves to the transmission operation. First, set a transmission instruction command in the CCUIO (518), start the CCUIO and start communication (S19), and send the images stored in the video memory 6 to the line 12 to transmit a predetermined number of images (520).
, completes the operation.

FIG. 3 is a circuit diagram showing details of the S V i /f 2, buffer memory 3, and masking section 4 described above.

S V i / f 2 is RS 232 Ci /
The f322 exchanges commands/status with the CPU7 via the CPU/<S13, and the RS232C
Control 5VP1 with i/f322. The still video screen played on 5VP1 is controlled by video I/F.
Analog to digital RGB with A/D converter 320
It is converted into a signal and speed matched in the line buffer 321.

In the buffer memory 3, the RGB signals from the line buffer 321 are sent to the memory 3 via the data buffer 330.
Store on 31.

The address of the memory 331 is managed by the address controller 332, and as mentioned above, one frame is 768×4.
It has three times the capacity of 80=360Kbit. The address of this memory 331 is 480 in units of 768 bits.
It is managed for each line, and in order to perform enlargement when reading an image, the l address is updated every 4 pulses of the synchronization signal VCIock, which will be described later, and the main scanning direction is multiplied by 4, and the synchronization signal VE
By updating one line every four lines of nable, the data is multiplied by four in the sub-scanning direction. In addition, this memory 331
This is a two-buffer system, and the second still video screen is buffered.

The masking unit 4 uses the gates 340 and 3 when reading out l frames of the screen stored in the memory 331.
41, the main scanning and sub-scanning are masked so that the margin portion becomes white or another single color. Taking A4 size as an example, the screen of the memory 331 is main scanned 7 times.
68X4=3072bit or more, bit counter 342
Count by, gate, sub-scan 480x4
0 = Count from the 1920th line to the 2376th line, which is half of A4, and apply the gate. Furthermore, the data on the next second screen is similarly masked.

As a result, as shown in Figure 4, two still video screens that are 4 times enlarged in accordance with the facsimile standard are displayed.
It will be reproduced above and below the 5OAA size.

The synchronization control section 344 also includes the synchronization signal generation circuit 8 described above.
synchronization signals (VSync, VEnable, VCI
ock) to control each part.

As described above, a four-fold image signal (Video) conforming to the facsimile standard is obtained, and is coded into a facsimile code by the codec 5 described above together with each of the synchronization signals.

FIG. 5 is a timing chart showing the timing of each of the synchronization signals.

The synchronization signal VSync indicates the division of one page.
J, one pulse is generated per page.

The synchronization signal VENable indicates a division in line units, defines the effective width of the Video signal, and
4 sizes will be 3360 bits x 4752 lines.

The Video signal is a still video image signal that is masked to white or other colors within the lines and at the middle and back edges of the page.

The synchronization signal VC1ock becomes a sampling pulse of the video signal.

As explained above, in this embodiment, by inputting the video signal of a still video camera and storing the still video screen in the transmission area of the video memory using masking and synchronization signals, other facsimile devices compliant with the CCITT standard can be used. You can communicate with

Furthermore, since the still video screen is enlarged, an image with good recognizability can be obtained.

Furthermore, since two still video screens are transmitted as one image, transmission time and cost can be saved.

Furthermore, by making the margins of the image white, it is possible to transmit the facsimile image as a highly compressed encoded signal, thereby saving transmission time and cost.

Although the embodiments have been described above, the present invention is not limited thereto, and further modifications are possible.

For example, instead of using RGB color signals as the video signal, a single color signal may be used. In this case, the A/D converter 320, line buffer 321, memory 331 and data buffer 33
0 can be constructed with a single circuit.

Furthermore, in SVP, data recorded digitally on a memory card or the like may be reproduced and used as an RGB signal. In this case, a configuration without the above-mentioned A/D converter 320 can be used.

Furthermore, the same effect can be obtained by making the margins of the image a single color other than white.

Further, in the codec, it is also possible to employ a unique high-efficiency compression encoding method such as ADCT instead of the above-mentioned facsimile encoding.

Furthermore, although the above embodiment has shown a configuration for processing still video images, the present invention is not limited to this, and can be applied to an apparatus that samples moving image data for each screen, for example, for each field. Alternatively, it may be a video signal of a new standard such as high-definition.

[Effects of the Invention] According to the present invention, by reproducing a broadcast-standardized video input screen in the facsimile-standard image memory area, video screens of different sizes and densities can be adapted to the facsimile transmission image. For example, CCIT
It is possible to obtain standardized video screen communication with other types of facsimile machines compliant with T.

Furthermore, by enlarging the video screen, it is possible to obtain an image that is easy to view, and also to reduce the margins that occur when the video screen is played back in the facsimile image area.
By using white or another single color, the transmitted image can be highly compressed by facsimile encoding, and efficient transmission can be performed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a flowchart illustrating the overall operation in the same embodiment. FIG. 3 is a circuit diagram showing details of the S V i /f, buffer memory, and masking section in the same embodiment. FIG. 4 is a schematic diagram showing a specific example when a still video screen is reproduced in a facsimile image area in the same embodiment. FIG. 5 is a timing chart showing the timing of each synchronization signal in the same embodiment. FIG. 6 is a schematic diagram conceptually showing a configuration for transmitting images by a conventional still image transmission device. 5 1... Still video player, 2... Still video interface, 3... Buffer memory, 4... Masking section, 5... Codec, 6... Video memory, 7... CPU, 8... Synchronous signal generation circuit, 9... Scanner/printer interface, 10...
・CCU, 11...Scanner/Printer, 12...Line.

Claims (1)

[Claims] A facsimile device configured to input a broadcast-standardized video signal, the video input screen being enlarged, converted to a code compatible with the facsimile standard, and stored in an image memory area. In addition, a facsimile apparatus is characterized in that a blank space generated between a broadcast-standardized image and the image memory area is converted into a code as white or another single color.