GB2275386A - Colour facsimile for recognising transmitter/receiver type - Google Patents

Colour facsimile for recognising transmitter/receiver type Download PDF

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Publication number
GB2275386A
GB2275386A GB9403168A GB9403168A GB2275386A GB 2275386 A GB2275386 A GB 2275386A GB 9403168 A GB9403168 A GB 9403168A GB 9403168 A GB9403168 A GB 9403168A GB 2275386 A GB2275386 A GB 2275386A
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Prior art keywords
lt
rti
image
color
data
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
GB9403168A
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GB9403168D0 (en )
Inventor
Akira Ohori
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Ricoh Co Ltd
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Ricoh Co Ltd
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device
    • H04N1/333Mode signalling or mode changing; Handshaking therefor
    • H04N1/33307Mode signalling or mode changing; Handshaking therefor prior to start of transmission, input or output of the picture signal only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46Colour picture communication systems

Abstract

The color facsimile apparatus recognizes whether a receiver is of the same type of machine as a transmitter. Image processing for balancing the color image data is executed and the content of the image processing is changed on the basic of recognizing whether the receiver is of the same type of machine as the transmitter. In accordance with this invention, the reproduction of color image data is improved if the receiver is not the same type of machine as the transmitter. <IMAGE>

Description

COLOR FACSIMILE APPARATUS This invention is directed to a color <RTI>facsimile</RTI> apparatus which reads a color document image and sends color image data.

The present invention is particularly directed to a color facsimile apparatus which freely amends and adjusts the color <RTI>image,</RTI> In an apparatus which outputs a color image, it is required to <RTI>finely</RTI> amend and adjust color image data for reproducing an original color as faithfully as <RTI>posiible.</RTI> <RTI>For</RTI> example, a digital full color copying apparatus prepares a kind of specific value of <RTI>amendment</RTI> and adjustment (this is referred to as an amendment coefficient hereinafter) to print an image, which is read by <RTI>z</RTI> specific scanner, by a specific <RTI>printer.</RTI> That is, a kind of amendment coefficient which is based on both the scanner and the printer is <RTI>prepared.</RTI>

Moreover, in a color fasimile apparatus, a printer of a receiver can print the same image that a printer of a transmitter does if the receiver is the <RTI>eame</RTI> type of machine as the transmitter and the <RTI>transwitter</RTI> sends the receiver the image <RTI>da:a</RTI> which is amended and adjusted in the printer of the <RTI>tranamitter.</RTI>

However, in the conventional color facsimile apparatus, if the receiver is not the <RTI>same</RTI> type of machine as the transmitter, the <RTI>amendment</RTI> and the adjustment which is executed in the receiver may unbalance the colors of the color image data because the amendment coefficient of the receiver is different from that of the transmitter. That <RTI>is,</RTI> the problem that the receiver cannot accurately reproduce the original colors of the color image data arises.

Accordingly, one <RTI>object</RTI> of the present invention is to provide a novel color <RTI>facsiile</RTI> apparatus which improves the reproduction of colors of color image data even if a receiver is not the same type of machine as a transmitter.

Another object of the present <RTI>invention</RTI> is to provide a novel color facsimile apparatus which <RTI>improves</RTI> the reproduction of colors of color image data even it a receiver is not the same type of machine as a transmitter by adding a content of image process data to a protocol signal.

These and other objects and advantages are achieved by the present invention <RTI>which</RTI> provides for a color facsimile apparatus comprising <RTI>first</RTI> means for recognizing <RTI>whether</RTI> a <RTI>receiver</RTI> is of the same type of machine as a transmitter or not, second means for executing image processing for balancing the colors of color image data, and third means for changing the content of the image processing on the basis of the recognition by the first means, A more complete appreciation of the present invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description, of exemplary embodiments and the accompanying <RTI>drawings,</RTI> wherein:: Fig, 1 is a block diagram of an apparatus of the present invention; Fig. 2 shows the data which is stored in a ROM in the apparatus of the present invention; Fig. 3 is a <RTI>flowchart</RTI> showing a transmitting operation of a <RTI>first</RTI> embodiment of the present invention; Fig. 4 is a <RTI>flowchart</RTI> showing a receiving <RTI>operation</RTI> <RTI>of</RTI> the <RTI>first</RTI> embodiment of the present invention; Fig. 5 is a flowchart <RTI>showing</RTI> <RTI>a</RTI> control operation of a second embodiment <RTI>of</RTI> the present invention.

Referring now to the <RTI>arawingi,</RTI> wherein like reference numerals designate identical or corresponding parts <RTI>throughout</RTI> the aeveral views, and more particularly to figure <RTI>I</RTI> thereof, there is detailed an apparatus of the present invention which will now be described.

Fig. 1 is a block diagram of an apparatus of the present invention. As shown in Figure 1, the present invention comprises a NCU (Network Control Unit) 101 which connects lines and the <RTI>like,</RTI> a <RTI>modem</RTI> 102 which modulates a transmitted signal and <RTI>demodulatec</RTI> a received signal, a <RTI>coder</RTI> and decoder <RTI>1D3</RTI> which codes a <RTI>transitted</RTI> signal and decodes a received signal, and an operation panel 104 on which an operator instructs commands such as a transmitting start and selects operation modes and the like.The present <RTI>invention</RTI> further comprises an image input block <RTI>105</RTI> which reads the document image optically, executes photoelectric conversion, executes A/b conversion, and outputs digital data, an <RTI>stage</RTI> processor 106 which executes many kinds of amendments and conversions for color image data using <RTI>paramatersstored</RTI> in a <RTI>ROMI</RTI> an image output block 107 which prints transmitted color image data to a sheet of paper <RTI>musing</RTI> three colors of ink which are Y (yellow), M (Magenta), and C (cyan), <RTI>ROM</RTI> 108 which stores a control program of the entire apparatus, parameters of amendment coefficients, table data, and other data (data used in image processing)1 <RTI>CPU</RTI> 109 which controls each block described above on the basis of the control program stored in <RTI>ROM</RTI> 108, and <RTI>PAK</RTI> 110 which data is read storm and written to temporarily by CPU 109. The operation panel 104 is equipped with many kinds of setting keys such as ten number keys, a start and stop key, and the <RTI>bike.</RTI> In the data stored in ROM 108, the parameters for image processing (the amendment coefficients and the table data) which are used in the image processor 106 are shown in Fig. 2.

The operation of a first embodiment of the present invention will now be described.

Pirst, referring to Fig. 3, the case when the image processing for reproducing an original color of color image data as faithfully as possible is executed in the transmitter, will be described. A color <RTI>document</RTI> is set on the color input block 105 and the kind of color document is <RTI>selected,</RTI> <RTI> for</RTI> example a photograph, a printed matter, a picture, a text document, and the like <RTI>(S301).</RTI> A number of the <RTI>receiver</RTI> is <RTI>inputted</RTI> and start is instructed by the start and stop key.

After that, CPU <RTI>lo9</RTI> starts to send data on the basis of the control signal stored in <RTI>RON</RTI> <RTI>16a.</RTI> CPU 109 exchanges signals with the receiver by way of the NCU 101 (S302) and recognizes the type of machine of the receiver <RTI>(SO3).</RTI> At this time, CPU 109 select optimum data in the parameters for image processing (referring to Fig. 2) stored in ROM <RTI>loa,</RTI> which are the data used according to the type of the receiver and the kind of the color document (S304). If the receiver is of the same type as the transmitter, the data in accordance with the set color document is <RTI>elected</RTI> among the characteristic parameters of the receiver and the transmitter, which is adjusted optimally, <RTI>ae</RTI> shown in Pig. 2. <RTI>:f</RTI> the receiver is not of the same type of machine as the transmitter, standard <RTI>image</RTI> processing is selected.

The image of the color <RTI>document</RTI> is inputted by way of the image input block 105 (S305). More <RTI>apecifically,</RTI> the color document is read <RTI>optically</RTI> about R, G, <RTI>S</RTI> respectively, each light is converted into an electric signal (an analog signal) in a photoelectric device, and the analog signal is converted into a digital signal in an A/D converter. The image prooessor <RTI>106</RTI> executes image processing to the inputted digital signal by way of the image input block 105, using the parameters for image processing which are selected in <RTI>s304</RTI> <RTI>(5306).</RTI>

The data, after the image processing, is then coded in the coder and decoder 103 <RTI>(S3C7),</RTI> and the coded data is then modulated in the modem 102 (S308). The modulated data is sent to <RTI>itne</RTI> by way of NCU 101 (S101).- As-described above, in this operation the transmitter recogni2es the type of the receiver and sands the receiver the data to which the optimum image processing is executed.

Now, ref erring to <RTI>Pig.</RTI> 4, the case when the image processing is executed in the receiver will now be described.

When the receiver is called from the line, NCU 101 connects the line (S401) and CPU 109 executes a receiving operation on the basis of the control program stored in <RTI>ROM</RTI> <RTI>108.</RTI> <RTI>CP</RTI> 109 exchanges signals with the transmitter (S402) and recognizes the type of machine of the <RTI>transmitter</RTI> and the kind of the <RTI>document</RTI> (S403).

At this time, CPU 109 selects optimum data in the <RTI>parantetrs</RTI> for image processing stored in ROM 108, which are the data <RTI>fuzed</RTI> according to the type of machine of the transmitter and the kind of the color <RTI>document</RTI> (5404). CPU <RTI>109</RTI> receives the image data <RTI>(8405).</RTI> The received data is demodulated in the modem 102 <RTI>(s4b6)</RTI> and is then decoded in the coder and decoder (S407). An image processing is then executed on the decoded data <RTI>(s4Oa).</RTI> That <RTI>is,</RTI> an image processing is <RTI>executed</RTI> using the parameters which are selected in s404.The data after the image processing is then printed with color in the image output block <RTI>107</RTI> <RTI>(S40ç).</RTI> As described above, the <RTI>receiver</RTI> recognizes the type of machine of the transmitter and the kind of the document and it prints after executing the optimum image <RTI>roca.sing-on-the</RTI> image data.

As described above, according to the first <RTI>embodiment,</RTI> the image processing is executed in accordance with the recognized type of machine in the transmitter or the <RTI>receiver</RTI> <RTI>Therefore</RTI> the reproduction of the colors of the color image data can be improved even if the receiver is not the same type of machine as the transmitter.

In the first embodiment, though the image processing is executed in either the transmitter or the receiver, it can be executed in <RTI>bbth</RTI> the transmitter and the receiver. In this case, the image processing of the receiver is executed considering the image processing of the transmitter.

According to a second <RTI>embodiment</RTI> of a color facsimile apparatus of the present invention, specific data for amendment and adjustment in the image signal processing (color facsimile processing data) is added to the protocol signal for exchanging signals. As the structure of the device for implementing this second embodiment is the same as that of the first embodiment, and as is shown in Fig. <RTI>1,</RTI> the explanation and the figures are omitted.

As the operation for transmitting and receiving in each block in this second embodiment is the same as in the first embodiment, the outline of the operation is described referring to Fig. 5. First, a set color document is read by the scanner in the image input block <RTI>105</RTI> <RTI>(S501).</RTI> The read image data is executed by image <RTI>processing--(S502).</RTI> The receiver is called by way of NCU 101 <RTI>(s503).</RTI> The protocol signal, which the color processing signal is added to, is then sent to the called receiver <RTI>(S504).</RTI> In the receiver, the color processing data is taken from the protocol signal <RTI>(SSO5),</RTI> and the image data which is subsequently sent is received (S506), The image data is then processed in accordance with the taken color processing data <RTI>(SSO7).</RTI>

According to the second embodiment, <RTI>ai</RTI> the color processing data is added to the protocol signal and is then transmitted, the exclusive si al for the color processing is unnecessary.

In describing the preferred embodiments of the present invention illustrated in the drawings, <RTI>specified</RTI> terminology is employed for the sake of clarity. However, the invention is not intended to be limited to the specific terminology so selected, and it is to be understood that each specific element includes <RTI>all</RTI> technical equivalents which operate in a similar purpose.

<RTI>Obviouly,</RTI> numerous modifications and variations of the present invention are possible in light of the above teachings. <RTI>=t</RTI> is therefore to be understood that within the scope of the appended <RTI>claim,</RTI> the invention may be practiced otherwise than as specifically described herein.

Claims (16)

1. A color facsimile apparatus <RTI>comprLging:</RTI> first means for recognizing whether or not a receiver is of a same type of machine as a transmitter; second means for executing image processing for balancing colors of color image data to be communicated; and third means for changing a content of said image Drocessing on the basis of the recognition by the first means.
2. The color facsimile apparatus of Claim <RTI>I,</RTI> wherein if the receiver is the same type or machine as the transmitter, the second means executes image processing of the receiver.
3. The color facsimile apparatus of claim 1 or 2, wherein if the receiver is not the same type of machine as the <RTI>transmit:er,</RTI> the second means <RTI>execute</RTI> standard image processing.
<RTI>n.</RTI> The color facsimile apparatus of Claim 3, wherein the standard image processing is image processing between the receiver and the transmitter.
5. The color facsimile apparatus of claim 1,2,3 or 4, further comprising third means for changing a content of said image <RTI>processing ai U</RTI> basis of the recognition by the <RTI>first</RTI> means and the type of a document containing the color image data to be communicated.
<RTI>
6.</RTI> The color facsimile apparatus of Claim <RTI>5,</RTI> wherein the type of the document containing the color data to be communicated may be a text document, printed matter, or a photograph .
7. The color facsimile apparatus of any one of the preceding claims, wherein the content of the image processing is added to a protocol signal which is communicated.
<RTI>
8.</RTI> A color <RTI>facsimile</RTI> apparatus comprising: a recognition device for recognizing whether or not a receiver is of a same type of machine as a <RTI>transmStt4r;</RTI> an <RTI>image</RTI> processor for executing image processing for balancing color image data to be communicated; and an image processing changing device for changing a content of said image processing on a basis of the recognition by the recognition device.
<RTI>
9.</RTI> A color facsimile apparatus for receiving and <RTI>transmiting</RTI> a color image data signal, comprising: a determining means for determining whether or not a receiving facsimile apparatus for receiving the color image data is of a same type as a transmitting facsimile apparatus for transmitting the color image data; an image processor for executing an image processing on the color image data signal; and an image processor controller for controlling the image processing on the color image data signal based on the determining means determining whether or not the receiving facsimile apparatus is of the same type as the <RTI>trangwittsng</RTI> facsimile apparatus.
10. The color facsimile apparatus of claim 9, wherein if the receiving facsimile apparatus is of the same type as the transmitting facsimile apparatus, the image processor executes image processing on the received image data signal.
11. The color facsimile apparatus of claim 9 or 10, wherein if the receiving facsimile apparatus is not of the same type as the transmitting facsimile apparatus, the image processor executes standard image processing.
12. The color facsimile apparatus of claim 11, wherein the standard image processing is image processing between the receiving facsimile apparatus and the transmitting facsimile apparatus.
13. The color facsimile apparatus of claim 9, 10, 11 or 12, further comprising changing means for changing a content of said image processing further on a basis of the type of document containing the color image data.
14. The color facsimile apparatus of claim 13, wherein the type of the document containing the color image data may be a text document, a printed matter, or a photograph.
15. The color facsimile apparatus of any one of claims 9 to 14, wherein the content of the image processing is added to a protocol signal which is received and transmitted between the receiving facsimile apparatus and the transmitting facsimile apparatus.
16. A color facsimile apparatus constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB9403168A 1993-02-20 1994-02-18 Color facsimile apparatus Withdrawn GB9403168D0 (en)

Priority Applications (1)

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JP5479593A JP3285998B2 (en) 1993-02-20 1993-02-20 Color facsimile machine

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GB2275386A true true GB2275386A (en) 1994-08-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680202A2 (en) * 1994-04-28 1995-11-02 Canon Kabushiki Kaisha Image processing apparatus and method
WO1997025811A1 (en) * 1996-01-04 1997-07-17 Siemens Aktiengesellschaft Image signal processing device and process for the processing of digital data signals
WO2000004704A1 (en) * 1998-07-17 2000-01-27 Heidelberger Druckmaschinen Ag Method for controlling devices in the field of reproduction techniques

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4891859B2 (en) * 2007-08-06 2012-03-07 京セラミタ株式会社 Image forming apparatus
JP5601446B2 (en) * 2009-12-24 2014-10-08 富士ゼロックス株式会社 A facsimile machine, a facsimile communication system and a facsimile communication program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487329A2 (en) * 1990-11-21 1992-05-27 Canon Kabushiki Kaisha Color image communication apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487329A2 (en) * 1990-11-21 1992-05-27 Canon Kabushiki Kaisha Color image communication apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680202A2 (en) * 1994-04-28 1995-11-02 Canon Kabushiki Kaisha Image processing apparatus and method
EP0680202A3 (en) * 1994-04-28 1996-05-29 Canon Kk Image processing apparatus and method.
US5847847A (en) * 1994-04-28 1998-12-08 Cabib Kabushiki Kaisha Image processing apparatus and method
WO1997025811A1 (en) * 1996-01-04 1997-07-17 Siemens Aktiengesellschaft Image signal processing device and process for the processing of digital data signals
WO2000004704A1 (en) * 1998-07-17 2000-01-27 Heidelberger Druckmaschinen Ag Method for controlling devices in the field of reproduction techniques

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Publication number Publication date Type
GB9403168D0 (en) 1994-04-06 grant
JPH06245088A (en) 1994-09-02 application
JP3285998B2 (en) 2002-05-27 grant

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