JPS62245431A - Picture display inverting system - Google Patents

Abstract

PURPOSE:To easily enable a display picture to be recognized by an operator at an inversion side, by reading out and displaying the display picture in a reverse sequence from a picture memory. CONSTITUTION:Picture displaying on a picture display part 8 by picture information on a picture memory 1 is equivalent to the sequential readout of the picture information on the picture memory 1 in the increasing (forward address) direction, that is, from left to right. And the read out serial picture information is sent out to the picture display part 8 after conversion at a picture information conversion circuit 7. The picture display part 8 constitutes a picture by a serial display signal corresponding on the picture memory 1. A picture display control circuit 6, and a memory address control circuit 2 read the picture information on the picture memory 1 sequentially in the decreasing direction (from the right to the left) setting a right and lower part at a left side, that is, the maximum address of the picture memory 1 as a start point, by a picture display inversion instruction signal 3 sent by operating a picture inversion switch by the operator. Then, it is possible to perform the display of an inverted picture on the picture display part 8 by the serial picture information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image display inversion method, and particularly to a method for inverting a displayed image.

[Conventional technology]

Conventionally, when two operators facing each other view an image display device, one operator can see the displayed image in the correct direction, but
The displayed image is in an inverted state for the operator facing the operator.

[Problem that the invention seeks to solve]

The conventional facing-type image display device described above has a drawback in that the displayed image cannot be reversed, so that it is difficult for the operator on the reverse side to see the displayed image.

Means for Solving Problem C] The image display inversion method of the present invention is such that when operators face each other to operate a display image, the display image for one operator is displayed inverted for the other operator. an image display inversion instruction means for instructing, and an image display inversion means for reversing the display image by reading out the display image from the image memory in reverse order and displaying it in accordance with the image display inversion instruction means. .

〔Example〕

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is an external view of an image display device according to an embodiment of the present invention. In the figure, an operator facing the user (indicated by an arrow) operates via the image display unit 8 of the image display device 20. Further, an image reversal switch 21 is attached as an image display reversal instruction means of the present invention.

FIG. 2 is a configuration diagram of an image display related circuit realized by a system bus system as a hardware configuration that an image display device can normally have. In the figure, an image display control circuit 6 and a memory input/output control circuit 5 connected to a system bus 9 are controlled under the image display device control software by an image display control information signal 10 and a screen width input/output information signal 4 from the CPU II, respectively. It operates and displays a predetermined image.

The image memory 1 receives information from the memory input/output control circuit 5 according to address information from the memory address control circuit 2.
Writing/reading is performed under control from the image display control circuit 6. This operation means updating the information stored in the image memory 1 with other image display information under the control software of the image display device. This image display information may be sent to the image display device from another parent device, or it may be displayed as CPU II software.

Another role of the image display control circuit 6 is to
The image information on the image memory 1 is displayed on the image display section 8.

That is, under the control of the image display control circuit 6, the image information on the image memory 1 read out according to the address signal from the memory address control circuit 2 is converted by the image information conversion circuit 7, and then sent to the image display section 8. Use as a display signal.

FIG. 3 is a diagram showing the correspondence between the contents of the image memory 1 and the image display section 8. As shown in FIG. In the figure, the left side is the image information on the image memory 1, and the eyes (1, 1) (1, 2) are renamed for convenience.
)...(1, 10) and the squares in the pond each represent one pixel. Furthermore, one pixel corresponds to one memory address on the image memory 1. The right side means the image on the image display section 8. Here, displaying an image on the image display unit 8 using the image information on the image memory 1 means that the image information on the image memory 1 is displayed in the increasing (forward address) direction of memory addresses, that is, in the conceptual diagram on the left side of FIG. This corresponds to sequential reading from left to right. Then, the read serial image information is converted by the image information conversion circuit 7 and sent to the image display unit 8. The image display section 8 forms an image corresponding to the image memory 1 using serial display signals. When the image display section 8 is a CRT, the serial display signal is a sweep signal (horizontal and vertical two
type). (The signal format differs depending on whether it is monochrome or color.) FIG. 4 shows the correspondence between the contents of the image memory 1 and the image display unit 8 when the displayed image is inverted. In the figure, the image display control circuit 6 and memory address control circuit 2 convert the image information on the image memory 1 to the lower right corner on the left side of the figure in response to the image display inversion instruction signal 3 sent by the operator by operating the image inversion switch 21. , that is, starting from the maximum address of image memory 1 and decreasing the memory address (from right to left).
are read out sequentially. Then, an inverted image can be displayed on the image display section 8 using the above-mentioned serial image information.

〔Effect of the invention〕

As explained above, the present invention has the advantage that the displayed image can be reversed by a simple reversal operation based on an image display reversal instruction from the opposite operator, so that the opposite operator can operate while viewing the easily viewable display image. There is.

[Brief explanation of drawings]

FIG. 1 is an external view of an image display device that employs the image reversal method of the present invention. FIG. 2 is a circuit configuration diagram that realizes the image inversion method. FIG. 3 shows the relationship between the contents of the image memory in FIG. 2 and the displayed image, in a case where the contents are not inverted. FIG. 4 shows the same relationship as FIG. 3, but with the image reversed. DESCRIPTION OF SYMBOLS 1... Image memory, 2... Memory address control circuit, 5... Memory input/output control circuit, 6... Image display control circuit, 7... Image information conversion circuit, 8... Image display Department.口枞心'yrJ3 Figure 1 51 start at d

Claims (1)

[Scope of Claims] Image display inversion instruction means for instructing one operator to display the display image inverted for the other operator when the operators operate the display image while facing each other; and the image display. An image display reversing method comprising: an image display reversing means for reversing the display image by reading out and displaying the display image from an image memory in reverse order according to the reversal instruction means.