KR950002309B1 - Data changing device for fax - Google Patents

Abstract

The data converting apparatus comprises a main controller for interpretating the standard of a receiving part and controlling a data converting mode, a scanner and printer for inputting/outputting video data, a video storage for storing data output from the scanner, a data converter for sequentially converting the resolution of data output from the video storage and a paper size according to a data converting mode of the main controller, and a transmitter for transmitting the resolution and paper size converted by the data converter to a receiving part, thereby transmitting the sending paper quickly.

Description

Facsimile data converters

1 is a block diagram of a conventional data conversion apparatus.

2 is a block diagram of a data conversion apparatus of the present invention.

3 is a block diagram of a data conversion unit of the data conversion apparatus of the present invention.

4 is a block diagram of a data conversion table of the data conversion apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

1A: Scanner 1B: Printer

2: Image storage unit 5: Transmission control unit

7 data conversion unit 8 encoding and decoding unit

9: vertical converter 10: horizontal converter

11: Conversion mode setting unit 12: Line memory

The present invention relates to a facsimile (FAX) data conversion apparatus, in particular, to perform the conversion of the resolution (400dpi, 200dpi, ...) and the paper size (A4, B5, ...) at the time of transmission and reception, It is to speed up the conversion and simplify data control.

In general, in the case of FAX communication with counterpart models, the communication standards and capabilities of input / output devices do not match due to differences between models.

That is, the standard of the input device varies according to the scanner for reading the image information of the transfer paper, such as A4, B4, A3, etc. Therefore, a device for converting the paper size for matching the standard is required for communication with the other model.

In addition, since the resolution at the time of receiving data may be various, such as 200 dpi and 400 dpi, a resolution converting device is also required in this case.

For example, if the sending side fax receives data through the scanner at 400dpi resolution at B4 size, and the data printing capability of the receiving side fax is 200dpi at A4 size, the sending side fax will send the input data before data transmission. After converting to A4, 200dpi, this converted data should be transmitted.

As shown in FIG. 1, a conventional FAX data conversion apparatus for data conversion includes a scanner 1A and a printer unit 1B for detecting and outputting image data when setting paper for transmitting FAX; An image storage section 2 for storing data output from the scanner 1A, a resolution converting section 3 for converting the resolution of data stored in the image storage section 2, and a paper size converting section for converting a paper size ( 4), a transmission control unit 5 for transmitting the converted resolution and paper size to the receiving side FAX and controlling reception, and a main control unit 6 for controlling the resolution conversion unit 3 and the paper size conversion unit 4; It consists of.

The conventional FAX data conversion device configured as described above detects the data by the scanner 1A and stores it in the image storage unit 2 when the user sets the paper to use the FAX as shown in FIG. At this time, after setting the receiving side FAX and the dial by the transmission control unit 5, the printing standard and the resolution of the receiving side are sensed and transmitted to the main control unit 6.

In this way, by determining the printing standard and the resolution of the receiving side transmitted to the main control unit 6, the resolution and paper size output from the image storage unit 2 according to the receiving printing standard and the resolution conversion unit 3 and the paper It is converted by the size converting section 4 and transmitted by the transmission control section 5 to the receiving side FAX.

However, in the conventional FAX, when the resolution conversion and the paper size conversion must be performed at the same time, since the resolution conversion unit 3 and the paper size conversion unit 4 are separated, the paper size conversion must be performed again after performing the resolution conversion first. It takes a lot of conversion time during the conversion, which leads to a long transmission time.

This is a problem in that communication time is long due to conversion time because the communication fee is expensive when using an ISDN (Intergated Service Digital Network), and the main control unit 6 in which the conversion unit 3 and 4 are separated is used for conversion. There was a problem that it was difficult to control the section (3) (4).

In order to solve the conventional problems, the present invention allows the data to be easily controlled by converting the resolution and the paper size at the same time, and the conversion time is shortened. The configuration and effect of the invention are as follows.

First, the resolution conversion and the paper size conversion applied in the present invention are implemented by removing image data at a constant ratio. In the case of resolution conversion, since 400 and 200 dpi are adopted as multiple resolutions of 200 dpi and 400 dpi in G4 grade FAX, In the case of the paper size conversion, the paper size of the sending side is reduced and transmitted only when the paper scanning size of the sending side fax is larger than the printing size of the receiving side fax.

Of course, in this case, since both of the image data are removed at a constant rate, the resolution and the paper size can be simultaneously converted.

For example, when converting image data read at 400dpi in B4 size to 200dpi in A4 size, converting them at the same ratio 0.4262 times by integrating both conversion process will produce the same conversion effect as separating the paper size and resolution conversion separately. You can double that speed as you gain.

2 shows a configuration of the apparatus of the present invention to perform such a conversion operation.

That is, the data converting apparatus of the present invention, as shown in FIG. 2, stores the scanner 1A and the printer unit 1B for detecting or outputting data upon paper setting, and the data input to the scanner 1A. An image storage unit 2, a data conversion unit 7 for simultaneously converting the resolution and paper size stored in the image storage unit 2, and a transmission control unit 5 for transferring the converted resolution and paper size to the receiving side FAX. ), And a main controller 6 for performing the conversion mode control according to the specification of the receiving side FAX detected by the transmission control unit 5.

As shown in FIG. 3, the data conversion unit configured to decode the data stored in the image storage unit, and encode and decode the converted data again, and the output of the encoding and decoding unit 8 The vertical conversion unit 9 converts signals in line units and the horizontal conversion unit 10 converts data in Pel units, and controls each conversion unit 9 and 10 according to each conversion mode. A conversion mode setting unit 11 for generating and supplying a signal, and a line memory 12 for temporarily storing output data line-converted by the vertical conversion unit 9 until inputted to the horizontal conversion unit 10. .

The effect of the present invention configured as described above is that the effect is sensed by the scanner 1A when setting the paper to transmit the FAX as shown in FIG. 2 and FIG. Save it.

At this time, the transmission control unit 5 detects the printing specification and the resolution of the other party's fax after setting up the receiving side FAX and the call and transmits it to the main control unit 6.

Accordingly, the main controller 6 decodes the transmitted printing standard and resolution and inputs the converted mode setting unit 11 of the data converter 7 to set the converted values such as the printing standard and the resolution of the receiving side. do.

At this time, the data stored in the image storage unit 2 is decoded by the encoding and decoding unit 8 and supplied to the vertical conversion unit so that the data supplied from the vertical conversion unit 9 is 1-line data for each paper size. Process in units.

The decoded data converted in units of lines is temporarily stored in the line memory 12 and then input to the horizontal conversion unit 10 so that the data is converted in units of pels.

The data inputted to the horizontal conversion unit 10 and converted into pel units are inputted to the encoding and decoding unit 8 and encoded, and then transmitted to the image storage unit 2 and the transmission control unit 5.

In this way, the conversion for the conversion mode is performed to simultaneously perform the resolution conversion and the paper size conversion, thereby increasing the conversion speed.

That is, the conversion rule by the table set as shown in FIG. 4 is input to the main controller 6 in advance, and the conversion mode setting unit 11 is controlled accordingly so that the vertical conversion unit for one line at the time of resolution conversion and paper size conversion ( 9) The high-speed data conversion process can be performed by performing a simultaneous conversion operation in which the horizontal conversion unit 10 removes the data to be removed in the resolution conversion and the data to be removed in the paper size conversion from the line memory 12 to the pel unit. Since the FAX data conversion is performed by removing specific data from the original data at a constant rate, the simultaneous conversion is possible by applying the rule of FIG.

As described above, since the conversion of the resolution and the paper size are simultaneously performed during FAX transmission and reception, the transmission paper can be quickly transmitted, thereby reducing the transmission time, thereby saving time and saving the communication fee.

Claims (2)

An image storing the data output from the scanner 1A, the main controller 6 for controlling the data conversion mode by analyzing the standard on the receiving side, the scanner 1A and printer 1B for inputting and outputting image data, and the scanner 1A. A data conversion unit 7 for simultaneously converting the storage unit 2, the resolution and paper size of the data output from the image storage unit 2 according to the data conversion mode of the main control unit 6; A facsimile data conversion device comprising a transmission control section (5) for transmitting the resolution and paper size converted in (7) to a receiving side. 2. The data converter according to claim 1, wherein the data converter 7 encodes and decodes the data stored in the image storage and re-encodes the converted data, and the output of the encoder and the decoder 8. The vertical conversion unit 9 converts signals in line units and the horizontal conversion unit 10 converts data in Pel units, and controls each conversion unit 9 and 10 according to each conversion mode. Data of a facsimile comprising a conversion mode setting unit 11 for generating and supplying a signal, and a line memory 12 for storing the output data line-converted by the vertical conversion unit 9 into the horizontal conversion unit 10. Inverter.