JPH1173173A - Picture display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the document preparing work. SOLUTION: A super-high definition display device 3 having the same resolution as that of a printer is connected to an information equipment 2 of such as a personal computer and a document in preparation is displayed on the device 3 with the resolution of the same order of that of the printer. As a result, an operator can confirm the appearance of the document with the super- high definition display device 3 in real time and it is not needed to print out the document one by one. Thus, since the time required for printing out the document or the like can be saved, the document preparing work is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image display device for creating a document and displaying the created document, and more particularly to an image display device for displaying an image substantially the same as an image when printed out.

[0002]

2. Description of the Related Art Conventionally, as a system for creating a document, a system in which a printer is connected to an information device such as a word processor or a personal computer has been used in offices and homes.

In order to create a document using such a system, a document is created while confirming its appearance on a display using an information device, and the created document is printed out by a printer.

[0004]

However, in the above-mentioned conventional system, the resolution of the display of the information device and the resolution of the printer differ greatly. For this reason, there is a difference between the font displayed on the display and the font printed out on the printer.
Sometimes it was printed out on a line. Also,
When printing out a photo as a document, it is necessary to perform image processing such as enlargement and reduction according to the difference in resolution. However, a gap of some dots occurs depending on the size of the image and the magnification of enlargement / reduction. A photograph displayed on one page was sometimes printed out on two pages.

If the document displayed on the display and the printed document are different, it is necessary to correct the document again after printing, and it is difficult to obtain a desired document. In addition, waste of paper and time is caused by the printout.

[0006] Some information devices are designed to be able to display an image (hereinafter referred to as a "print image") at the time of printing out on a display in advance before printing. Since the resolution is inferior to the resolution of the printer, the document to be printed cannot be displayed in detail, and the above problem has not been solved.

Accordingly, an object of the present invention is to provide an image display device that reduces the complexity of document creation work.

Another object of the present invention is to provide an image display apparatus which reduces waste of paper and time when creating a document.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and comprises a data input means for inputting document data, and a printer connected to the data input means. An image display device capable of printing out an image based on the document data, comprising: an image display unit connected to the data input unit for displaying an image based on the document data; and An image which is almost the same as the image to be printed out is displayed at the same resolution as the printer.

In this case, the document data is composed of luminance data, the data input means has an input-side data conversion unit for converting the luminance data into density data, and the data input means transmits the image data to the image display means. The density data is transmitted, and the image display means, the output data conversion unit for re-converting the transmitted density data to luminance data, and an image display unit that displays an image based on the luminance data, May be included.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2,
An embodiment of the present invention will be described.

As shown in FIG. 1, an image display device 1 according to the present embodiment includes a data input unit 2 for inputting document data.
An image based on the document data can be printed out by connecting a printer. An image display means 3 is connected to the data input means 2 so as to display an image based on the document data. The image displayed in this manner is substantially the same as the image when printed out, and has the same resolution as that of the printer.

Here, the data input means 2 may be a personal computer, a word processor, or the like.

Further, the above-mentioned document data includes at least luminance data. As shown in FIG. 2, the data input unit 2 has an input-side data conversion unit 10 for converting the luminance data into density data.
Is transmitted with the density data.

The image display means 3 has an output-side data conversion section 21 and an image display section 23. The output-side data conversion section 21 reconverts the density data into luminance data, and displays the image. The unit 23 displays an image based on the luminance data.

In this case, the data input means 2 has an N-value processing section 11 for performing N-value processing (where N is a natural number of 2 or more) of the density data, and the image display means 3
However, the number of gradations in the image display unit 23 may be changed so as to correspond to the N-value processing in the N-value processing unit 11.

The luminance data may be luminance data of three colors RGB, but the density data is YMCK4
It may be density data of color or density data of three colors of YMC.

Further, the image display section 23 may display an image substantially the same as the image to be printed out, and may also display the shape of the paper at the time of printing.

Further, as the image display section 23, a high-definition liquid crystal element is preferable, for example, a simple matrix type liquid crystal element using a liquid crystal exhibiting a ferroelectric state (hereinafter referred to as "ferroelectric liquid crystal") is preferable. .

Next, the operation of the present embodiment will be described.

When the document data is input to the data input means 2, the luminance data is converted into density data, and the converted density data is transmitted to the image display means 3. Then, the image display means 3 re-converts the density data into luminance data and displays an image substantially the same as the image to be printed out.

Next, the effect of this embodiment will be described.

According to the present embodiment, since the image display means 3 displays almost the same image as the image to be printed out, a document can be created while viewing the image and confirming the appearance. . Therefore, it is not necessary to perform printout for confirming the appearance of the document, and it is possible to avoid wasting paper and wasting time in the printout.

[0024]

【Example】

(Embodiment 1) As shown in FIG. 1, an ultra-high-definition display system (image display device) 1 according to this embodiment is an information device (data input means) such as a personal computer or a word processor to which document data is input. 2
And an ultra-high definition display device (image display means) 3 connected to the information device 2.
The document is created while confirming the appearance on the ultra-high definition display device 3.

A printer can be connected to the information device 2 as needed, and the printer has an image (document) based on document data.
Can be printed out.

FIG. 2 is a block diagram showing the overall configuration of the ultra-high-definition display system 1. As shown in FIG. 2, the information device 2 includes application software 5 for text creation, character input and An input unit 7 corresponding to a mouse or keyboard for inputting coordinates (or means for receiving document data via a network) and a display unit 8 for displaying a document being created are provided. 5, input unit 7 and display unit 8
Are controlled by the operating system 6.

The information equipment 2 transmits data (hereinafter referred to as “print data”) to be transmitted to the ultra-high definition display device 3.
And a display control unit 12 for generating density data by processing the document data.
An N-value processing unit 11 for performing N-value processing of the density data;
A control unit 9 for controlling these processing units 10 and 11;
It consists of.

Further, the above-described image processing unit 10 includes an RG
B luminance data (NTSC (National Tel)
evolution System Committee)
Conversion unit (input-side data conversion unit) 15 that converts a luminance signal, which is data of a system, into a numerical value, into density data C, M, and Y. (UCR; Under Colo)
r Removal) and an under color removal unit 17 for adding density data K corresponding to the gray component, a black generation unit 16, and a γ conversion unit 18 for performing γ conversion (details will be described later).

The ultra-high-definition display device 3 includes a control unit 20 for controlling the entire device, a conversion unit (output-side data conversion unit) 21 for performing various controls based on print data from the information device 2, and And a display unit (image display unit) 23 for displaying a print image. The display section 23 has a high definition (about 300 mm) using a ferroelectric liquid crystal.
(dpi display density) was used.

The printer interface includes a Centronics I / F and an RS232C serial I / F.
/ F may be used.

Next, the operation of displaying a print image as an ultra-high definition image on the display section 23 of the ultra-high definition display device 3 will be described with reference to FIGS.

FIG. 3 is a flowchart for explaining the outline of the operation of the entire system, and FIG.
FIG. 5 is a diagram for explaining a procedure of conversion from GB luminance data to density data, and FIG. 5 is a diagram for explaining a configuration of print data transmitted from the information device 2 to the ultra-high definition display device 3. 6, FIG. 6 is a diagram for explaining the configuration of each command in the print data, FIG. 7 is a diagram for explaining the contents of each command in the print data based on the print image, and FIG. FIG. 4 is a flowchart for explaining processing inside the ultra-high definition display device 3. [1] Operation of the whole system Person who operates this system 1 (hereinafter, referred to as “operator”)
When the user inputs document data in the input unit 7 on the information device side (S1 in FIG. 3), the display unit 23 on the display device side displays a print image (an image that is substantially the same as the image to be printed out) on the same resolution as the printer. (S4 in FIG. 3). In addition, the shape of the sheet when printing out is also displayed (details will be described later).

The operator can correct the document data after confirming the appearance of the document with the print image (S2 in FIG. 3). When the document data is corrected, the corrected print image is displayed on the display unit 23. It is displayed (S4 in FIG. 3).

Further, in the present system 1, control for matching the number of colors of the print image with the number of colors of the original data is performed so that the color of the print image is close to the color of the original data such as a photograph. (See below for details)
Halftone processing can also be performed. Moreover, in the present system 1, the operator can select from various halftone processing methods such as an error diffusion method and a pattern dither method according to his / her preference (S3 in FIG. 3). The print image subjected to the intermediate processing by the method is displayed on the display unit 23 (S4 in FIG. 3).

If it is not necessary to input, designate, etc. in each of the above steps, the step may be deleted or skipped. Further, a step of performing other designations or the like may be added as necessary. [2] Details of Each Operation [2-1] Operation of Information Device When an operator inputs document data from the input unit 7, the RGB luminance data is input to the image processing unit 10 via the operating system 6 ( Fig. 4 (b) S1
0).

Then, the density conversion unit 15 converts the RGB luminance data into density data C and C using non-linear transformation such as logarithmic transformation.
It is converted into M and Y (see S12 in FIG. 4B).

Next, the undercolor removal unit 17 and the black generation unit 16 perform the undercolor removal process and the black generation process using the density data C, M, and Y and the following formula (FIG. 4). (b) S1
4).

[0038]

Equation 1 C (1) = C−β × MIN (C, M, Y) M (1) = M−β × MIN (C, M, Y) Y (1) = Y−β × MIN (C , M, Y) K (1) = α × MIN (C, M, Y) where MIN (C, M, Y) is the minimum density data value of the three density data C, M, Y. And β is
The ratio of under color removal to MIN (C, M, Y)
Is a value indicating the ratio of black amount generation.

Next, in the γ conversion section 18, C (1), M
The output gamma is adjusted (γ conversion) for (1), Y (1), and K (1), and data C (2), M (2), Y
(2), converted to K (2) (see S16 in FIG. 4 (b)).
Here, data C (2), M (2), Y (2), K
Density correction is performed so that a linear relationship is established between each signal of (2) and the image density displayed on the ultra-high definition display device 3 correspondingly.

By the way, these data C (2), M
(2), Y (2) and K (2) are multi-valued data,
The N-ary processing of these data is performed by the N-ary processing section 11 to obtain data C ', M', Y ', and K' (FIG. 4).
(b) See S18).

Then, the print data is sent from the control unit 9 to the ultra high definition display device 3.

This print data is, as shown in FIG.
It consists of commands of “page start”, “resolution”, “format”, “paper size”, “margin”, “raster data”, “raster skip”, and “page end”. Hereinafter, each command will be described. "Page start" As shown in FIG. 6A, this command is composed of a character (SC) indicating the head of the command and a command type code "00", and indicates the start of transfer of print data. “Resolution” As shown in FIG. 6B, this command is composed of SC, command type code 01, vertical resolution, and horizontal resolution.
This specifies the vertical resolution and the horizontal resolution of the print image. "Format" As shown in FIG. 6 (c), this command has SC, command type code 02, and bit length (that is, the value of "N" in the N-ary processing, where N is 2, 3, 4). , ...). When a print image is displayed on the “paper size” display unit 23, it is preferable that the shape of the paper is also displayed as an image, and for that purpose, information on the paper size needs to be input to the ultra-high definition display device 3. . This command is used to specify the paper size (specifically, paper length (see reference numeral 30 in FIG. 7) and width (see reference numeral 31 in FIG. 7)). As shown in), it is composed of SC, command type code 03, paper length, and paper width.

The "paper shape" is displayed centered on the center of the display unit 23 regardless of the size of the paper. "Margin" As shown in FIG. 6 (e), this command is composed of SC, command type code 04, upper margin, lower margin, left margin, right margin, and upper margin 3 shown in FIG.
3 (the width of a blank area where characters and the like are not printed at the upper end of the paper), the lower margin 34 (the width of the blank area at the lower end of the paper), the left margin 35 (the width of the blank area at the left end of the paper), and the right margin 36 (the width of the right end of the paper) (The width of the blank area). "Raster data (Y)" This command is composed of SC, command type code 10, data length, and Y data as shown in FIG. 6 (f).

Here, the raster is a reference numeral 37 in FIG.
As shown by, each dot row of the horizontal scanning line in a portion of the paper 38 excluding the margins 35 and 36.

In the present system 1, as described above, density data is input from the information equipment 2 to the ultra-high-definition display device 3, and is represented in a line-sequential manner in which one raster is separated for each YMCK component. It has become. This command specifies the Y component density data of the target raster.

The transfer efficiency of the Y data is improved by compressing the TIFF format PackBits or the like. In this case, the data length specifies the compressed data length. "Raster data (M)" This command is composed of SC, command type code 11, data length, and M data, as shown in FIG.
This specifies the M component concentration data of the target raster. "Raster data (C)" This command is composed of SC, command type code 12, data length, and C data as shown in FIG.
This specifies the C component concentration data of the target raster. “Raster data (K)” As shown in FIG. 6 (i), this command is composed of SC, command type code 13, data length, and K data.
This specifies K component concentration data and the like of the target raster. “Raster skip” When there is a raster that does not need to be drawn, for example, as shown in FIG. 7 between lines of a character string 39, the YMCK component does not occur in these rasters. No data is sent, only data relating to the number of rasters is transmitted, and the ultra high definition display device 3 skips that number.

This command is, as shown in FIG.
The number of rasters to be skipped is constituted by C, a command type code of 20, and the number of skips. "Page end" As shown in FIG. 6K, this command is composed of the SC and the command type code 99, and indicates the end of the transmission of the print data. [2-2] Operation in Ultra High Definition Display Device 3 Upon receiving the print data (see S20 in FIG. 8), the ultra high definition display device 3 determines what the received command is (see S22 in FIG. 8).

If the received command is "page start", the page is initialized (see S24 in FIG. 4), and default values are set to the respective set values.

More specifically, the resolution is set to the resolution of the ultra-high definition display device 3, the format is set to the number of bits per pixel that can be displayed by the ultra-high definition display device 3, and the height of the paper is set. As the width and width, the display area (the number of sub-scanning lines and the number of main scanning dots) of the ultra-high definition display device 3 is set, and the upper, lower, left, and right margins are all set to zero. Further, the RGB brightness data is set to the maximum value to clear the set sheet portion.

If the received command is "paper size", "resolution", "format", or "margin", the conversion unit 21 changes the set values from the default values to the specified values (see S26 in FIG. 26). ).

Here, when the designated value of the resolution does not match the resolution of the ultra-high definition display device 3, the resolution is converted by enlargement / reduction.

If the bit length B0 specified in the "format" does not match the bit length B1 per pixel of the ultra-high definition display device 3, the conversion unit 21 sets the bit length as follows. Make adjustments. That is,

[0053]

[Formula 2] When B0> B1, D1 = D0 >> (B0-B1) When B0 <B1, D1 = D0 << (B1-B0) where D1 is display data and D0 is input data ( Print data), and << represents an N-bit shift.

If the designated paper size is larger than the display area of the ultra-high definition display device 3, the display area itself is set to the paper size, and the set values of resolution, format, and margin are changed. .

If the received command is “raster data (Y)”, “raster data (M)”, “raster data (C)”, or “raster data (K)”, the conversion unit 21 converts the density data YNMCK into RGB. The page data is created by converting it into luminance data (see S28 in FIG. 8).

[0056]

[Formula 3] R = 〜CG = 〜MB = 〜Y R = G = B = 〜K where represents an invert.

If the received command is "raster skip", the raster is skipped by the specified skip number to create page data (see S28 in FIG. 14). The skip number is adjusted according to the resolution so that the print image is not affected by the resolution.

Further, when the received command is "page end", page data is displayed on the display unit 23 (see S30 in the figure).

According to this embodiment, the same effects as those of the above-described embodiment can be obtained. (Embodiment 2) In the present embodiment, the image processing section 10 is not provided with an under color removal section or a black generation section, and the RGB luminance data is Y
It was decided to convert to only the density data of three colors of MC. FIGS. 9 (a) and 9 (b) are diagrams showing this state. In addition, the density data of these three colors is sent from the information device 2 side to the ultra high definition display device 3 side,
Is converted again into RGB luminance data (see FIG. 10).
Other configurations and operations are the same as those in the first embodiment.

According to this embodiment, the same effects as in the first embodiment can be obtained.

[0061]

As described above, according to the present invention,
Since the image display means displays an image that is substantially the same as the image to be printed out at the same resolution as that of the printer, a document can be created while viewing the image and confirming the appearance. Therefore, it is not necessary to perform printout for confirming the appearance of the document, and the complexity of the document creation operation can be reduced.

Further, it is possible to reduce waste of paper and waste of time during the printout.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the appearance of an ultra-high definition display system according to the present invention.

FIG. 2 is a block diagram showing the overall configuration of an ultra-high definition display system.

FIG. 3 is a flowchart for explaining the outline of the operation of the entire system.

FIG. 4 is a view for explaining a procedure of conversion from RGB luminance data to density data.

FIG. 5 is a view for explaining a configuration of print data transmitted from the information device 2 to the ultra-high definition display device 3.

FIG. 6 is a view for explaining the configuration of each command in print data.

FIG. 7 is a view for explaining the contents of each command in print data based on a print image.

FIG. 8 is a flowchart for explaining processing inside the ultra-high definition display device 3.

FIG. 9 is a diagram showing another embodiment of the present invention, in which RG
FIG. 9 is a diagram for explaining conversion from B luminance data to density data.

FIG. 10 is a view showing another embodiment of the present invention, and is a flowchart for explaining processing inside the ultra-high definition display device 3.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ultra-high-definition display display system (image display device) 2 Information equipment (data input means) 3 Ultra-high-definition display device (image display means) 11 N-value processing part 15 Density conversion part (input side data conversion part) 21 Conversion Unit (output side data conversion unit) 23 Display unit (image display unit)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 1/60 H04N 1/40 D 1/46 1/46 Z

Claims (8)

[Claims] 1. An image display device, comprising: data input means for inputting document data, and capable of printing out an image based on the document data by connecting a printer to the data input means. Image display means connected to the input means for displaying an image based on the document data, and the image display means converts substantially the same image as the image to be printed out to the same resolution as the printer. An image display device, wherein: 2. The image processing apparatus according to claim 1, wherein the document data includes luminance data, the data input unit includes an input-side data conversion unit that converts the luminance data into density data, Density data is transmitted, and the image display unit has an output-side data conversion unit that reconverts the transmitted density data to luminance data, and an image display unit that displays an image based on the luminance data. The image display device according to claim 1, wherein: 3. The data input means according to claim 1, wherein said data input means comprises:
An N-ary processing unit for performing a binarization process (where N is a natural number of 2 or more), and the image display unit is configured to correspond to the N-ary processing in the N-ary processing unit. The image display device according to claim 2, wherein the number of gradations in the image display unit is changed. 4. The image display device according to claim 2, wherein said luminance data is luminance data of three colors of RGB, and said density data is density data of YMCK. 5. The image display device according to claim 2, wherein said luminance data is luminance data of three colors of RGB, and said density data is density data of YMC. 6. The image display unit according to claim 2, wherein the image display unit displays substantially the same image as the image when printed out, and displays the shape of the paper when the printout is performed. The image display device according to claim 1. 7. The image display device according to claim 2, wherein the image display unit is a high-definition liquid crystal element. 8. The image display device according to claim 7, wherein the liquid crystal element is a simple matrix type using liquid crystal exhibiting a ferroelectric state.