JPH07112261B2 - Image printer - Google Patents

Description

The present invention relates to an image printer having a function of controlling negative / positive reversal of a still image by an input image signal, printing by a printer unit, and displaying by a monitor unit. In the above, the present invention relates to an image printer in which a still image is divided into predetermined areas and negative / positive inversion can be controlled for each divided area.

[Prior Art] Conventionally, an image printer that controls negative / positive reversal of a still image to print and display has been configured as shown in FIG. 4, for example. That is, the image signal (for example, NTSC (signal)) input to the input terminal (1) is converted by the color decoder unit (2) into R,
The signals are G and B signals (or color difference signals) and are converted into digital signals by the A / D converter (3). At this time, if the image printer is a recording operation, R, converted into a digital signal,
The data for one still image based on the G, B signals is stored in each R, G, B memory circuit of the memory unit (4). Then, when the image printer is operated to monitor, the still image data stored in the memory section (4) is read out, and the negative / positive reversal control section (5) controlled by the negative / positive control signal reverses or The signal is non-inverted, converted into an analog signal by the D / A converter (6), and output to the monitor (7). Therefore, the monitor unit (7) displays a negative screen or a positive screen of a still image.

When the image printer is operated for printing, the printing unit (8) prints a negative screen or a positive screen of a still image.

[Problems to be Solved by the Invention] However, in the conventional example shown in FIG. 4, only the entire screen of a still image is displayed or printed as a negative screen or a positive screen, and the still image is displayed in a predetermined area. However, there is a problem in that the negative / positive inversion control cannot be performed for each divided area and only a part of the still image cannot be displayed or printed as a negative screen or a positive screen.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an image printer in which a still image is divided into predetermined regions and negative / positive inversion control can be performed for each divided region.

[Means for Solving the Problems] The present invention has been made to solve the above problems, and an image signal is converted into a digital signal by an A / D conversion unit, and the converted signal The still image data is stored in the memory unit, the negative / positive reversal of the stored still image is controlled, the printing unit prints the image, and the monitor unit displays the still image. When the address of each element to be formed is represented by X column and Y row,
A function division area setting unit that sets a division area represented by at least one or more X and Y functions, and a negative of whether each of the division areas set by this function division area setting unit is negative or positive. A negative / positive data setting unit for setting positive data, an X column address counter for counting addresses in the X direction on the screen of still image data read from the memory unit, and a Y row address counter for counting addresses in the Y direction, A control unit including a data select controller that determines which of the divided areas the count values of the X column address counter and the Y row address counter belong to in the function divided area setting unit and outputs a corresponding data select signal. And the negative / positive data setting section based on the data select signal from the cotton roll section. The data selection unit that selects the negative / positive data that has been selected, and the inversion / non-inversion of the still image data read from the memory unit based on the negative / positive data selected by the data selection unit is controlled and output to the printing unit. In addition, it is provided with a negative / positive inversion control section for outputting to the monitor section via the D / A conversion section.

[Function] The function division area setting unit sets a division area obtained by dividing a still image by a predetermined X, Y function line, and the negative / positive data setting unit sets each of the division areas as negative or positive. Positive data is set. When the control section outputs a data select signal corresponding to the divided area set by the function divided area setting section to the data select section, this data select section selects the corresponding negative / positive data from the negative / positive data setting section and・ Output to the positive reversal control unit. This negative / positive inversion control unit controls the inversion / non-inversion of the still image data stored in the memory unit based on the selected negative / positive data and outputs the data to the print unit, and via the D / A conversion unit. Output to the monitor. For this reason, the printing unit and the monitor unit print and display a screen in which negative / positive inversion is controlled for each divided area obtained by dividing a still image into predetermined areas.

[Embodiment] FIG. 1 shows an embodiment of the present invention. In this figure, the same parts as in FIG.

In FIG. 1, (1) is an image signal (for example, NTSC signal)
This input terminal (1) is connected to the input side of the memory section (4) via the color decoder (2) and the A / D conversion section (3). The output side of the memory section (4) is coupled to the D / A conversion section (6) and the printing section (8) via the negative / positive inversion control section (15), and the output side of the D / A conversion section (6) is connected. The output side is connected to the monitor section (7). (10) has X columns (for example, 640 columns) and Y rows (for example, 480 columns)
A still image represented by pixels in a row) with a predetermined function X = f
A function division area setting unit for setting division areas a and b divided into two by a line of ₁ (Y), X = f ₂ (Y). (20) is a negative for setting the divided areas a and b as negative or positive, and a negative for setting positive / negative control data Da and Db (for example, "1" for negative and "0" for positive). It is a positive data setting unit.
(30) is a control part, and this control part (30)
Is an X column address counter (3 that counts addresses when reading still image data from the memory unit (4).
1), the Y row address counter (32) and whether the count value of these counters (31) (32) belongs to one of the divided areas a and b set by the function divided area setting unit (10). A data select controller (33) for discriminating and outputting a corresponding data select signal. (Four
0) is the negative / positive data setting section (20) based on the data select signal from the control section (30).
Is a data selection unit that selects and outputs the corresponding negative / positive data Da, Db. (15) is a negative / positive inversion control section, and the negative / positive inversion control section (15) is based on the negative / positive data Da, Db selected by the data selection section (40), and is in the memory section (4). It is configured to control the inversion / non-inversion of the still image data stored in, and output to the D / A conversion unit (6) and the printing unit (8). The negative / positive reversal control unit (15) inputs still image data from the memory unit (4) to one input side A as shown in FIG. Exclusive OR gates (15a) (15a) for inputting the negative / positive data of the other to the other input side B and outputting the output data via the output side Y to the D / A conversion section (6) and the printing section (8). It consists of ...

Next, the operation of the above embodiment will be described with reference to FIG.

As shown in FIG. 3, the function division area setting unit (10) converts the still image (50) into two lines with X = f ₂ (Y) and X = f ₁ (Y).
The divided areas a and b are set, and the negative / positive data setting unit (20) sets the negative / positive data Da,
It is assumed that Db is set. When the image printer is performing a recording operation, the image signal input to the input terminal (1) is decoded by the color decoding unit (2) into R, G, B signals (or color difference signals), and the A / D conversion unit In (3), the data for one still image converted into a digital signal is stored in the memory section (4). Then, when a monitor operation is performed for the purpose of confirming whether or not the still image data stored in the memory unit (4) is the desired one, the memory unit (4) causes the monitor screen to be displayed line by line in the horizontal direction. Still image data is sequentially read out in the vertical direction. At this time, the control unit (30)
Indicates that the count values of the X column address counter (31) and the Y row address counter (32) that count the read addresses from the memory unit (4) are the function division area setting unit (1
Since the data selection signal corresponding to the divided area a or b of (0) is output to the data selection section (40), the data selection section (40) is connected to the negative / positive data setting section (20). ) Corresponding negative / positive data Da, Db
Is output to the negative / positive inversion control section (15). That is, the line (0,
When the still image data corresponding to the pixels of 0), ..., (0,639) is read from the memory unit (4), the negative / positive data Da for the pixels of the divided area a is selected.

Thereafter, Y ₁ line of the line _{(Y 1 -1,0), ...,} (Y 1 -1,639)
Until the time when the still image data corresponding to the pixels of the divided area a is read from the memory unit (4).
Positive data Da is selected. Then, from the pixel of Y ₁ + _1st line, (Y ₁ , 0), ..., (Y ₁ , 639) to the line of Y ₂ + _1st line, (Y ₂ +0), ..., (Y ₂ , 639) When still image data corresponding to pixels is read, 0 ≦ X <f
Da is selected for the pixels of the divided area a of ₂ (Y) and f ₁ (Y) <X ≦ 639, and Db is selected for the pixels of the divided area b of f ₂ (Y) ≦ X ≦ f ₁ (Y). To be done.

Furthermore, the line of the Y ₂ + _2nd line (Y ₂ +1,0), ..., (Y ₂ +
Lines (479,0), ... (47) from the pixel of 1,639) to the 480th line
When the still image data corresponding to the pixels of (9,639) is read out, the negative / positive data for the pixels of the divided area a
Da is selected. Therefore, the still image data read from the memory unit (4) is controlled to be inverted / non-inverted for each of the divided areas a and b, converted into an analog signal by the D / A conversion unit (6), and then monitored (7). Output to the monitor section (7)
Displays a negative / positive controlled still image for each a and b. For example, when Da = 1 and Db = 0, the divided area a becomes a negative screen and the divided area b becomes a positive screen. That is, in FIG. 2 showing an example of the negative / positive inversion controller (15), the truth value of the exclusive OR gate (15a) is as shown in the table below. When the data Da and Db on the input side B to which the negative / positive data from the data selection section (40) is input are “0”, the data on the input side A to which the still image data from the memory section (4) is input remains unchanged. Appears on output Y (non-inverted) and on input B
This is because the data on the input side A is inverted and appears on the output side Y when the data Da and Db of "1" are "1".

Since the operation when the image printer is operated for printing is almost the same as the operation for the monitor, the description thereof will be omitted.

In the above embodiment, the still image data is read from the memory unit (4) in the horizontal direction with respect to the monitor screen, but may be read in the vertical direction.

In the above-described embodiment, the case where the still image is divided into two has been described, but the present invention is not limited to this, and when the still image is represented by pixels in X columns and Y rows, a line of a predetermined X, Y function is used. It can be used for division (for example, 6 divisions, 9 divisions, etc.).

Although a color image printer has been described in the above embodiment, the present invention can be applied to a monochrome image printer.

In the above embodiment, the function divided area setting unit, the negative / positive data setting unit, the control unit, and the data select unit are provided to control the negative / positive of each still image divided area. If one bit for negative / positive control data is added to data (for example, 8 bits) and the CPU (central processing unit) performs negative / positive control for each pixel, the setting unit, control unit, data Although the selection unit is unnecessary, there is a problem that the capacity of the image memory increases and control by the CPU becomes complicated.

[Advantages of the Invention] As described above, the image printer according to the present invention divides a still image into predetermined regions, and performs negative / positive control for each divided region so that the images can be displayed and printed. The image print can be used for various purposes, and the uses can be expanded.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an image printer according to the present invention, FIG. 2 is a gate circuit diagram showing an example of the negative / positive inversion control of FIG. 1, and FIG. 3 is a diagram showing the operation of FIG. FIG. 4 is a block diagram showing a conventional example. (3) …… A / D converter, (4) …… Memory, (7)…
… Monitor section, (8) …… Print section, (10) …… Function division area setting section, (15) …… Negative / positive reversal control section, (2
0) …… Negative / Positive data setting section, (30) …… Control section, (40) …… Data select section, (50) …… Still image.

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location G06F 3/12 L H04N 1/387 5/91 B41J 3/12 R

Claims (1)

[Claims] 1. An A / D converter converts an image signal into a digital signal, the converted signal stores data for one still image in a memory unit, and the negative / positive inversion of the stored still image is performed. In an image printer in which the image is controlled to be printed by the print unit and displayed on the monitor unit, when the address of each pixel constituting the still image is represented by X columns and Y rows, at least one X , A function divided area setting unit that sets a divided area represented by the Y function, and a negative or positive data that sets each of the divided areas set by this function divided area setting unit as negative or positive. Positive data setting unit and X on the screen of the still image data read from the memory unit
X-column address counter for counting addresses in the directional direction, Y-row address counter for counting addresses in the Y-direction, and divided areas in which the count values of the X-column address counter and Y-row address counter are set by the function divided area setting unit Of the negative / positive data setting unit based on the data select signal from the control roll unit and a data select controller that outputs a corresponding data select signal by discriminating which one of the A data select unit that selects positive data, and controls the inversion / non-inversion of the still image data read from the memory unit based on the negative / positive data selected by the data select unit and outputs the data to the print unit. Negative output to the monitor via the / A converter Image printer characterized by comprising comprises a di inversion control unit.