JPH06308929A - Window display system - Google Patents

Abstract

PURPOSE:To make possible a window display by inputting to desired display devices while adopting interchangeability among personal computers or work station terminals. CONSTITUTION:This system is provided with a position.size detecting means 6 detecting the window display frame in display output signal from personal computers, etc., an input processing part 12 making a window display signal to be a specified size, a horizontal and vertical counter 7 counting the size of window display signal, a control part 8 outputting a control signal making window display signal to be a specified size while inputting a signal from the position.size detecting means 6 and a signal from the horizontal and vertical counter 7, a storage part 13 storing signal from the input processing part 12 and a synthetic circuit 14 synthesizing a signal read-out from the storage part 13 at the specified position of the window display in the display output signal by a control signal inputted from the position.size detecting means 6 and outputting them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window display system, and more particularly to a window display system in which a display output signal from a personal computer or the like is combined with another video signal and input to a desired display device for window display.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a conventional window display system. As shown in FIG.
From the display output signal and the video data designating signal relating to the position and size of the window to be displayed are input to the interface circuit 25, and the input B input through the input terminal 22 in the input processing unit 23 is used as the video data designating signal. It is converted into a size according to the size and output so as to be at the designated position and input to the combining circuit 24, which is combined with the display output signal from the personal computer 20 and input to the personal computer 20 as an interface output. At 21, the input B was displayed as a window on the image of the personal computer 20.

[0003]

Since the video data designation signal relating to the window display position and size is output from the personal computer 20 as independent data, therefore, the signal of the personal computer B is transmitted to the window display position of the signal from the personal computer 20. The compatibility of combining and inputting to the personal computer B or the third display device to display an image is impossible because the signal processing of independent data differs depending on the device. SUMMARY OF THE INVENTION It is an object of the present invention to provide a window display system that is compatible with personal computers or workstations and that can be input to a desired display device to display a window.

[0004]

According to the window display method of the present invention, a display signal output from a personal computer or the like is input, and a code signal inserted at a window display position of the output signal with a size substantially equal to the window display size. A position / size detecting means for detecting the position and size of the window display from the input, an input processing unit for setting the window display signal input to a specified size, and a first horizontal and vertical counter for counting the size of the window display signal input. And a signal from the position / size detecting means and a signal from the first horizontal and vertical counters, and a control signal to the input processing section for arithmetic processing to set the window display signal input to a specified size. A control unit for inputting, a storage unit for storing a signal from the input processing unit, a signal from the storage unit and the display output. And a signal from the position / size detecting means is input to the synthesizing circuit to output the signal from the storage unit to a designated position of the window display in the display output signal. The image is combined and output, and the output is input to a desired display device to display a window display image.

[0005]

According to the present invention, with the above-mentioned structure, the display output signal from the personal computer or the like is combined with the signal to be displayed on the window. However, a frame is opened at the window display position of the display output signal from the personal computer with a specific code. The position / size detection means detects the existing frame and performs signal processing, so compatibility is achieved between personal computers or workstations, and it is possible to input to a desired display device and display in a window. Becomes

[0006]

1 is a block diagram showing an embodiment of a window display system according to the present invention. A display output signal from a personal computer or the like is used as an input A and branched via the input terminal 1, one of which is input to the synthesizing circuit 14 and the other of which is input to the position / size detecting means 6, and the position / size detecting means 6 inputs A The position and size of the window display are detected from the window display frame opened by the specific code of. The window display signal input B is input to the A / D converter 11 via the input terminal 10, converted into a digital signal by the A / D converter 11, branched, and input to the input processing unit 12 and the horizontal and vertical counters 7. is doing.

The horizontal and vertical counter 7 counts and outputs the number of scanning lines of the input B and the number of pixels in the horizontal direction, and outputs the control section 8.
The control unit 8 calculates, for example, the reduction ratio of the image of the input B from the size detection signal of the window display input from the position / size detection unit 6 and inputs the calculated reduction ratio to the input processing unit 12. The input B is reduced to a designated size by using an interpolation filter or the like 12 and is output to the storage unit 13. The storage unit 13 uses a frame memory or the like and stores the input B reduced to the designated size. Then, the composite circuit 14 combines the input B with the input A input via the input terminal 1 to output the read output.
5 and the same output is input to a desired display device to input A
The input B displayed in the window is displayed in the signal of. The position / size detecting means 6 branches the input A and inputs it to the horizontal continuity discriminator 2, the vertical continuity discriminator 3, and the horizontal / vertical counter 5, and the horizontal / vertical counter 5
Then, the number of scanning lines of the input A and the number of pixels in the horizontal direction are counted and output, and the horizontal continuity discriminator 2 and the vertical continuity discriminator 3 are counted.
And the rectangular discriminator 4 and the control unit 8.

FIG. 2 is an explanatory diagram for explaining FIG. Normally, the display output signal (input A) output from the personal computer is framed by setting the window display position to a specific gradation value (specific code), as indicated by the hatched line in FIG. The horizontal continuity discriminator 2 is composed of, for example, a comparator circuit and a counter circuit, and detects a region where a specific gradation value is continuously detected in the horizontal direction by the input A and the counter input from the horizontal and vertical counters 5. Similarly, the vertical continuity discriminator 3 is also composed of a comparator circuit and a counter circuit, and defines an area in which a specific grayscale value is continuously detected in the vertical direction by the input A and the counter input from the horizontal and vertical counters 5. To detect.

Horizontal continuity discriminator 2 and vertical continuity discriminator 3
The detection signal from the rectangular discriminator 4 is input to the rectangular discriminator 4.
Is a logical product of the detection signal inputs from the horizontal continuity discriminator 2 and the vertical continuity discriminator 3 using, for example, a gate circuit, and the counter input from the horizontal and vertical counters 5 determines the start and end points of the window display. Find (X in FIG. 2,
Y and x, y) are input to the control unit 8. The horizontal and vertical counter 7 counts the number of scanning lines of the input B and the number of pixels in the horizontal direction to obtain the values of Xb and Yb in FIG. 2, and the control unit 8 counts the horizontal and vertical counters 7 and the rectangle discriminator. By the input from 4, the calculation unit 9 calculates and inputs B
Then, the signal is input to the input processing unit 12 and the input processing unit 12 sets the input B to a predetermined size (x, y).

Count outputs from the horizontal and vertical counters 5 are input to the control unit 8. When the count number matches the start point of the window display, a read signal is input to the storage unit 13 and stored in the storage unit 13. The data of the input B thus made is read out and inputted to the synthesizing circuit 14, and at the same time, the control signal is synthesized from the rectangular discriminator 4 at the start point of the window display.
And inputs the input B to the window display portion provided at a predetermined position of the input A in the combining circuit 14 and outputs the combined input B. Therefore, since the video data designating signal relating to the window display position and size output as independent data from the personal computer is not used for the signal processing, the output from the synthesizing circuit 14 is input to an arbitrary display device and is input to the signal of the input A. It becomes possible to display the input B displayed in a window, and it becomes possible to display the window in a compatible manner between a personal computer or a workstation.

[0011]

As described above, according to the present invention,
Detects a frame with a specific code at the window display position of the display output signal output from a personal computer, etc., and processes the window display signal, so compatibility between personal computers or workstations is ensured. Therefore, it becomes possible to input to a desired display device and display a window, and it is possible to provide a versatile window display system.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a window display system of the present invention.

FIG. 2 is an explanatory diagram for explaining FIG.

FIG. 3 is a block diagram showing a conventional window display system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input terminal 2 Horizontal continuity discriminator 3 Vertical continuity discriminator 4 Rectangular discriminator 5 Horizontal and vertical counters 6 Position / size detection means 7 Horizontal and vertical counters 8 Control section 9 Computing section 10 Input terminals 11 A / D converter 12 Input Processing Section 13 Storage Section 14 Combining Circuit 15 Output Terminal 20 Personal Computer 21 Display Section 22 Input Terminal 23 Input Processing Section 24 Combining Circuit 25 Interface

Claims (2)

[Claims] 1. A position for inputting a display output signal from a personal computer or the like, and a position for displaying a window and a position for detecting a size from a code signal inserted in a window display position of the output signal with a size substantially the same as the window display size. Size detection means, an input processing section for setting the window display signal input to a specified size, first horizontal and vertical counters for counting the size of the window display signal input, and a signal from the position / size detection means A control unit for inputting signals from the first horizontal and vertical counters and performing arithmetic processing to input a control signal for adjusting the window display signal input to a specified size to the input processing unit; A storage unit for storing a signal, and a combination circuit for combining the signal from the storage unit and the display output signal and outputting the combined signal. A signal from the position / size detecting means is input to the synthesizing circuit, the signal from the storage unit is synthesized and output to a designated position of the window display in the display output signal, and the output is a desired display device. A window display method characterized by displaying a window display image by inputting into. 2. The position / size detecting means includes a second horizontal and vertical counter for counting the number of scanning lines and horizontal pixels of the display output signal, and the display output signal and the second horizontal and vertical counter. Signal from the second horizontal and vertical counters, and a horizontal continuity discriminator that detects the continuity of pixel data in the horizontal direction. A vertical continuity discriminator for detecting sex,
It consists of a rectangular discriminator that detects the starting point and size of the window display from the inputs of the horizontal continuity discriminator and the vertical continuity discriminator, and inputs a window size detection signal from the rectangular discriminator to the control unit. The control unit outputs a control signal for adjusting the window display signal input to a specified size, inputs the signals from the second horizontal and vertical counters to the rectangular discriminator, and outputs the window display by the rectangular discriminator. 7. A start point is detected, a signal is output, and the signal is input to the synthesizing circuit and the control unit to synthesize the signal from the storage unit at a designated position of the window display in the display output signal. The window display method described in 1.