KR890017946A - Television and Video Tape Recorder Screen Art Circuits and Methods - Google Patents

Abstract

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Description

Television and Video Tape Recorder Screen Art Circuits and Methods

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1 is a circuit diagram of the present invention.

Claims (2)

In a television or video tape recorder having a color difference separator, a sync separator, a division circuit unit, and a color synthesis unit, a keyboard 10 for generating a function selection signal for a function selected by the viewer's selection, and the keyboard 10 The digital color difference of the first predetermined number of bits n is input by sequentially inputting the microcomputer 20 for controlling the entire system by inputting a function selection signal) and Y, RY and BY signals, which are analog color difference signals, from the color difference separator. A first data converter for converting a switching and AD converter 30 for converting into a signal and an output of the switching and AD converter 30 into a digital color difference signal having a second predetermined number of bits R and outputting the signal at a fourth predetermined period ( 40) and when the digital color difference signal of the first data converter 40 is input to the first port and stored therein, the data amount of the sixth predetermined unit is read and the read data is stored in the second predetermined bit unit. To A dual port memory 50 to sequentially output through the second port and a second port of the dual port memory 50 to convert Y, RY and BY, which are color difference signals of a first predetermined bit, to be output at a fifth predetermined period A second data converter 41, a luminance signal controller 70 for inputting and outputting a Y signal of the first predetermined number of bits n of the second data converter 41, and the second data converter A third 3D-A converter 82 for converting the color difference signal RY of the first predetermined number of bits n of the unit 41 into an analog RY signal and outputting the color difference signal RY to the color difference combining unit; 2D-A converter 81 for converting BY of a predetermined number of bits n to analog BY and outputting it to the color difference combining unit, and Y of the adjusted first predetermined number of bits n of the Y adjusting unit 60. The first D-A converter 80 converts the signal into an analog Y signal and outputs it to the color difference combining unit, and decodes the art control signal applied from the microcomputer 20. The first clock of the eighth predetermined frequency afsc and the second clock of the ninth predetermined frequency bfsc are divided by the horizontal and vertical synchronization signals applied from the synchronization separating unit. The first and second latch signals for controlling the output period of the second data converters 40 and 41, the switching control signals for controlling the switching inputs of the switching and AD converters 30, and the Y controller 60. For controlling the brightness control of the control) and the dual port memory 50 for accessing And a control decoder (60) for generating a signal, an address of the third predetermined number of bits (1), and a read clock. In a television or video tape recorder, the analog color difference signals Y, RY, and BY are converted into digital signals of the first predetermined bit (n) in the order of RY, Y, Y, BY, Y, and Y. In the data storage process of converting a predetermined bit R and storing the data in a memory, data reading for repeatedly reading a seventh predetermined unit digital signal corresponding to one horizontal scanning period in one horizontal scanning period during the data storage process is performed. And converting the digital signal read out by the data reading process into Y, RY, BY signals of the first predetermined bit n, converting the digital level of any number of bits of the Y signal to have a constant level value, and then converting the analog color difference. A screen art method comprising a data output process of converting and outputting signals Y, RY and BY signals. ※ Note: The disclosure is based on the initial application.