KR940010172B1 - Multi-color super impose circuit using screen division - Google Patents

Abstract

The multicolored superimpose circuit for a camcorder displays a title part in multicolor by using a screen six division function in performing the superimpose function. The circuit includes a switch connected to a luminance signal input terminal; a low pass filter connected to the switch; an analog-to-digital converter connected with the low pass filter and the switch; a screen divider connected to the analog-to-digital converter; a digital integrator connected to the screen divider; a microcomputer; a superimposing part connected with the digital integrator and the microcomputer; and a memory.

Description

Multicolor superimposed circuit using screen division

1 is a multicolor superimposed circuit diagram using screen division according to the present invention.

2 (a) to (b) are screen state diagrams showing an example of multi-colored tides superimposed according to the present invention.

* Explanation of symbols for main parts of the drawings

10: screen divider 20: digital integrator

30: superimposing unit 40: memory unit

SW1: Switch LPF: Low Pass Filter

ADC1, ADC2: Analog Digital Converter MICOM: Micom

YI: luminance signal input

The present invention relates to a camcorder, and more particularly, it is a multi-color super that uses a screen split that enhances the incidence of a title by simultaneously displaying a title part in multiple colors by using a screen splitting function when performing a superimpose function. It is about a pause circuit.

In general, the superimpose function for titles is that the color after tight memory is set by the user in white, yellow, cyan, green, violet, red, and blue. ), Either Black or Black is selected for recording. However, in the above case, since the title is monochromatic, it feels monotonous and boredom, and there is a disadvantage that the title is not well highlighted according to the scene color during recording.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is a multicolor super using a screen division in which a title is multicolored so that a predetermined color appears evenly in each part of a stored title. The purpose is to provide a pause circuit.

Another object of the present invention is to provide a multi-color superimposed circuit using screen division that improves the function of superimposed by increasing the incidence of a title.

A feature of this invention for achieving this object is a switch connected to the luminance signal input stage to select a normal normal superimposition function and a multicolor superimposition function, a low pass filter connected to the switch, the low pass filter And an analog digital converter connected to the switch, a screen divider connected to the analog digital converter to divide the screen area, and an evaluation value for data of each area divided by the screen divider connected to the screen divider. A digital integrator to determine a normal superimposition and a multicolor superimposition mode according to a user's mode selection, and to control the switch; and a digital integrator connected to the digital integrator and a microcomputer according to the control of the micom. Input the evaluation value of the luminance signal screen-divided from the integrating unit In the color signals and the blank forging superimposed portion, and the superimposed multi-color superimposed using the split screen that is composed of a memory coupled to the forging unit circuit for the output signal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a multicolor superimpose circuit using a screen division according to the present invention, and is connected to a luminance signal input terminal YI and selects a normal normal superimposition function and a multicolor superimposition function SW1. The analog digital converter ADC1 is connected through the low pass filter LPF. The analog-digital converter ADC1 is connected to a screen divider 10 that defines each screen area in order to multicolor each part of the title. The screen dividing unit 10 is connected to a digital integrating unit 20 that calculates an evaluation value for data of each area divided by the screen dividing unit 10.

On the other hand, according to the user's mode selection, the normal superimposition and the multi-color superimposition mode is determined, and the MICOM and the digital integrator 20 to control the switching of the switch SW1, the superimposition unit 30 ). The superimposing unit 30 receives an evaluation value obtained by screen-dividing the luminance signal from the digital integrating unit 20 under the control of the MICOM, and outputs a title color signal and a blank signal for each region. In addition, the superimposing unit 30 connects a memory unit 40 made of static RAM (SRAM), and the switch (SW1) converts the luminance signal input when the normal superimpose function is selected into a digital signal. Connect transducer (ADC2).

In this invention configured as described above, when the user selects the normal superimposition mode, the MICOM MICOM controls the switch SW1 to be switched to the "a" side to select the normal superimpose mode, and the luminance signal is an analog digital converter ( Through ADC2), it is processed in the way that is commonly used to ensure that the title is represented in monochrome.

On the other hand, when the user selects the multi-color superimpose mode, MICOM selects the multi-color superimpose mode by controlling the superimposition SW1 to switch to the "b" 'side. Accordingly, the luminance signal is band-limited by the low pass filter (LPF), then input to the analog digital converter ADC1, converted into a digital signal, and input to the screen divider 10. The screen divider 10 divides the screen area into six parts to multicolor each part of the title, which is a commonly used method. The signals of each of the divided screen regions are input to the superimposing unit 30 as an evaluation value for determining the state of each screen region in the digital integrator 20, and are composed of color and blank signals for each region. That is, the superimposing unit 30 determines the state of the screen as an evaluation value indicating the luminance level of each region so as to be processed together with each data input from the MICOM.

Accordingly, the superimposing unit 30 outputs the title color signal for each area predetermined by each evaluation value together with the blank signal. In this case, the superimposing unit 30 is a gate array, and the gate array is configured to process the evaluation data of the luminance signals of the respective areas in parallel, so that the predetermined color signal and the luminance signal enter each corresponding area during output. To control. This will be described in more detail with reference to FIG. 2, which is a screen state diagram showing an example of a multi-color title superimposed according to the present invention.

First, when the input luminance signal is input to the screen divider 10 through the low pass filter LPF and the analog digital converter ADC1, the screen is divided into six parts as shown in FIG. 2A.

When the screen-divided data is input through the digital integrator 20 and the evaluation value for each divided region is input to the superimposing unit 30 as described above, the data from the MICOM, that is, the title data and the color signal data. This results in superimposition with multicolor mode data.

At this time, the title character is " ga ", for example, the title data " ga " is located in the divided area as shown in FIG. 2b, and finally, each color data of the screen area where the title " ga " And superimposed and processed by area as shown in (Table 1).

TABLE 1

As described above, the present invention increases the incidence of the title by increasing the title portion by displaying the title part in multiple colors by using the screen splitting function, which is a monochromatic title by the user's arbitrary selection when performing the existing superimpose function. Impossibility has been improved.

Claims (1)

A switch SW1 connected to the luminance signal input terminal YI to select a general normal superimpose function and a multicolor superimpose function, a low pass filter LPF connected to the switch SW1, and the low pass filter LPF and analog digital converters (ADC1) and (ADC2) connected to the switch (SW1), a screen divider (10) connected to the analog digital converter (ADC1) to divide the screen area, and the screen divider (10) Digital integrator 20 which calculates an evaluation value for data of each area divided by the screen divider 10, and normal superimpose and multicolor superimposed modes according to the user's mode selection. A microcomputer MICOM that determines and controls the switching of the switch SW1, and is connected to the digital integrator 20 and the MICOM and is controlled from the digital integrator 20 under the control of the microcomputer MICOM. The luminance signal is divided into screens Multi-color super using screen division consisting of a superimposing unit 30, a memory unit 40 connected to the superimposing unit 30, and a superimposing unit 30 for outputting a title color signal and a blank signal for each region. Impose circuit.