KR930002690B1 - Picture processing method for fax - Google Patents

Abstract

The method provides the clear image data by processing the image signal according to the determined background density level. When the user of facsimile sets the standard mode, the data is processed as the existing mode. When the user sets the automatic mode, the processor reads and stores the background density of document (4) . Thereafter, the first page of document is processed under the determined background density. When the ADF sensor is operated after processing the first page data, the data processing procedes until the document is consumed up.

Description

Image Processing in Facsimile

1 is a block diagram of the present invention.

2 is a manuscript processing state diagram in the present invention.

3 is a flow chart for explaining the operating state of the present invention.

A and b of FIG. 4 are state diagrams of a transmission original and a received or copied original in the present invention.

* Explanation of symbols for main parts of the drawings

1: light source 2: glass

3: ADF sensor 4: Original

5: CCD 6: amplifier

7: fire signal processor 8: processor

9: ROM 10: RAM

11: line control unit 12: thermal printer head

13: track

The present invention relates to an image processing method in a facsimile which is adapted to the setting of the automatic background density by determining the background density for each page of each original and performing the signal processing.

In the conventional facsimile apparatus, when the user selects the background density at the time of transmission or copying or transmission of a plurality of originals, the data is continuously processed or flowed based on a certain density until the processing of a plurality of originals is finished. There was a problem with black reception or copying.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and in the facsimile image processing method, the background density is automatically determined for each page of an original, and the signal processing is performed according to the determined background density level to make the image clearer and clearer. It is possible to obtain high-quality image data, which will be described below with reference to the accompanying drawings.

1 is a block diagram of the present invention, wherein 1 is a light source, 2 is a document glass, 3 is an ADF (abbreviation for Automatic Document Feeder) sensor, 4 is a document, and (CCD stands for Charge Couple Device), (6) amplifier, (7) signal processor, (8) processor, (9) ROM (10), RAM (11) and line control unit (12). ) Denotes a thermal printer head, and 13 denotes a track.

The operation relationship of the apparatus of the present invention configured as described above will be described with reference to FIG. 3 as follows.

In order to use the facsimile, the ADF sensor 3 is activated when the user attaches the document 4 to the document glass 2.

In this way, when the ADF sensor 3 is operated, the processor 8 performs the necessary operation by setting the function selection key on the panel so that the facsimile 8 is turned on and ready for power inside the facsimile.

For example, if the automatic mode is set as shown in FIG. 3, the # 1 document is read as shown in FIG. 2 and input to the speech signal processor 7 through the CCD 5 and the amplifier 6. Here, the speech signal processor 7 inputs the background density of the document 4 as the processor 8 under the control of the processor 8, and in the processor 8 the input background density is standard, light, or cloudy. Determining which level belongs to. When the level selection is made, the processor 8 determines the state of the speech signal processor 7 with the background density determined by the speech signal processor 7.

The speech signal processor 7 processes the speech information data to be input thereafter one by one in the state of the determined background density, through the thermal printer head 12 at the time of copying, and in the case of transmission, the line control unit 11 Will be sent via). If the next original exists after the first original processing is completed, the ADF sensor 3 remains in operation, and the above operation is continued to continuously process the appropriate background density for each page.

2 shows an example of processing three originals, the # 1 original is processed in a standard state, the # 2 original is processed in a light state, and the # 3 original is processed in a dark state. Clear and clear picture quality can be obtained.

That is, the present invention performs data processing in the conventional manner when the user sets it to the normal mode as shown in FIG. 3, and reads and stores the background density of the original as a processor when the user sets it to the automatic mode, and the background density thereof. Determining which area belongs to a standard, bright, or cloudy state in advance and processes it as a background density determined for one page.

After the data processing for one page is completed, the ADF sensor 3 is inspected for operation, and during operation, the original 4 remains on the platen 2, and the data is returned to the initial state and continues to be processed. Signal processing is continued until the document 4 is completely consumed on the platen 2.

In FIG. 4, a is a transmission original state diagram of the present invention, and b is a received or copied original state diagram.

As described above, according to the present invention, even when the background density changes rapidly in the original in the sub-scanning direction, the background density of the original surface is changed to the most suitable mode among standard, bright, and blurring states for each page in the original. Since the processing can be performed, it is possible to provide an effect of obtaining the data of the received or copied originals with clearer and cleaner picture quality.

Claims (1)

When the user of the facsimile is set as the reference mode, data processing is performed according to a conventional method. When the facsimile user is set to the automatic mode, the background density of the document 4 is read by the processor 8 and stored. Compare and determine which area belongs to bright or cloudy state, and process as background density for one page, and check the operation of ADF sensor 3 after completion of data processing for one page. Is an image processing method in a facsimile, which is a process in which data processing is continued until the document is completely consumed.

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