JPH01175082A - Image data transfer control system - Google Patents

Abstract

PURPOSE:To improve transfer efficiency by segmenting and transferring only a required image area without restricting an image information segmenting area by a square area. CONSTITUTION:A significant bit pattern is set up in the same memory area of a 2nd memory plane 11b corresponding to a transfer specified area of image information stored in a 1st memory plane 11a. At the time of simultaneously transferring data stored in the 1st and 2nd memory planes, the transfer data A1, A2 of the 1st memory plane 11a are selected in accordance with the significant bit pattern setting areas A1', A2' of the 2nd memory plane 11b. Consequently, only a required image area can be segmented and transferred without restricting the segmenting area of image information by a square area.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of Defense] (Field of Industrial Application) The present invention relates to an image data transfer control system for cutting out and transferring a desired area of display image color information, for example.

(Prior art) For example, in an image data processing device that inputs image information on a document using an image scanner, stores it in memory, displays it, prints it, etc., and displays the image information of a newspaper, etc. that has already been stored in its memory. Conventionally, a window transfer means for image data is used when it is desired to display and output the image data in a section and cut out only a part of the image area for printing or the like. In other words, when you specify a desired partial area on the display section in rectangular units (windows), the image information within that specified area is extracted from the memory, transferred to another memory, stored, and then printed. , or directly transferred to a printer and printed.

(Problems to be Solved by the Invention) However, if the image data is cut out and transferred by the window transfer means, the image information is divided into rectangular units,
In other words, since it is cut out in a rectangular or square state, for example, if you want to cut out an L-shaped area or multiple areas, a rectangular area surrounding the outside of the desired cutout area will be cut out. Therefore, an unnecessary extra image area is also cut out and transferred at @1.

The present invention has been made in view of the above-mentioned problems.
It is an object of the present invention to provide an image data transfer control method that makes it possible to cut out and transfer only a desired image area.

[Structure of the Invention] (Means for Solving the Problems) That is, the image data transfer control method according to the present invention includes a first memory plane in which image information is stored, and a first memory plane in which image information is stored.
an area specifying means for specifying an arbitrary transfer area of the image information stored in the memory plane; and a significant bit pattern having the same memory area as the first memory plane and corresponding to the area specified by the area specifying means. The second
When data stored in the memory plane and the first and second memory planes are simultaneously transferred, the first memory plane corresponds to the significant bit pattern setting area of the second memory plane.
and transfer data selection means for selecting transfer data of the memory plane.

(Operation) In other words, a significant bit pattern is set in the same memory area of the second memory plane that corresponds to the transfer designated area of the image information stored in the first memory plane, and
When the data stored in the memory planes are simultaneously transferred, the data to be transferred in the first memory plane is selected in correspondence with the significant bit pattern setting area of the second memory plane.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an image data transfer system that implements an image data transfer control method. Memory plane, 1
1b is a second memory plane having the same memory area as the first memory plane 11a, and 12a and 12b are corresponding first and second memory planes 11a, respectively.

A register 13 loads the image information stored in the register 11b, and a register 13 loads the image information stored in the register 11b.
This is a selector that selectively transfers and outputs the data stored in the first memory plane 11a loaded from the memory plane 2a.

Next, the image data transfer control means in the image data transfer system having the above configuration will be explained.

First, image information such as a newspaper inputted by an image scanner (not shown) is stored in the first memory plane 11a. With the information stored in the first memory plane 11a being displayed on a display section (not shown), a desired area that requires cutting out is specified by, for example, encircling it with multiple points using a cursor on the display screen. In this case, the designated cutout area on the display screen is displayed, for example, as a reverse display.

Then, as shown in FIG. 2, the specified cutout area A1. of the first memory plane 11a specified on the display screen is displayed. A
Area A1' of the second memory plane 11b corresponding to
, A2' are all data It 1 II
The image is set to be reversed (hatched).

In this way, the cutout designated area A1. of the image information stored in the first memory plane 11a. Area A1' of the second memory plane 11b corresponding to A2.

With A2' hatched, the specified cutout area A1. When the data transfer of A2 is started, the data stored in the first memory plane 11a and the second memory plane 11b is transferred to the corresponding registers 1'2a and 12b, and then the read addresses are synchronized and sent to the selector 13. Output. Then, the selector 13 transfers and outputs the input data from the register 12a only when the data input from the register 12b is "1", that is, the hatched areas A1' and A2' of the second memory plane 11b. The first memory plane 11 corresponding to
The image @ area of a, that is, the specified cutout area A1. Only the image data in A2 will be selected by the selector 13 and will be transferred to another image data memory or the like.

Therefore, according to the above image data transfer control means,
Since the cropping area of image data is not limited to a rectangular area, it is possible to crop and transfer only the required image area, and it is also possible to transfer and output multiple designated cropping areas in one transfer process. Become.

[Effect of the Invention 1 As described above, according to the present invention, the second memory area corresponding to the transfer designated area of the image information stored in the first memory brain
A significant bit pattern is set in the same memory area of the memory plane, and when data stored in the first and second memory planes is transferred simultaneously, the significant bit pattern is set in the same memory area of the second memory plane. Since the transfer data of one memory plane is selected, it is possible to provide an image data transfer control system that allows only a desired image area to be extracted and transferred without limiting the image information extraction area to a rectangular area.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an image data transfer system that realizes an image data transfer control method according to an embodiment of the present invention, and FIG.
The figure is a diagram showing the first and second memory planes associated with the image data transfer control operation in the image data transfer system. 11a...first memory plane, 11b...second memory plane
memory plane, 12a, 12b... register, 13... selector.

Claims (1)

[Claims] A first memory plane in which image information is stored, an area specifying means for specifying an arbitrary transfer area of the image information stored in the first memory plane, and a memory area that is the same as the first memory plane. a second memory plane in which a significant bit pattern is set corresponding to the area specified by the area specifying means, and the second memory plane when data stored in the first and second memory planes are simultaneously transferred; 1. An image data transfer control system comprising: transfer data selection means for selecting transfer data of the first memory plane in accordance with a setting area of a significant bit pattern of the plane.