KR970068587A - Moving character recognition and playback apparatus and method on a TV screen - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile character recognition and playback apparatus and method of a TV screen for recognizing and reproducing characters flowing at the upper and lower ends of a TV screen.

The moving picture recognizing and reproducing apparatus of the present invention includes a video signal processing unit for selectively processing an external input signal or a broadcasting signal into luminance and color signals, a reference synchronizing signal detecting unit for detecting a reference synchronizing signal from an output signal of the video signal processing unit A moving character detection unit for detecting and digitizing a moving character in the output signal of the video signal processing unit; a control unit for controlling the entire system by arranging the moving characters of the moving character detection unit without duplication, A storage means for storing moving characters arranged in the control and character organizing means at a specific address and outputting them when necessary, an output signal for selectively displaying an output signal of the moving character stored in the storing means and an image signal processing unit, And a processing means. In the present invention, And a reproducing method for recognizing and reproducing a moving character generated on a TV screen; A first step of selecting a broadcast signal or an external signal and separating the broadcast signal or the external signal into a luminance signal and a color signal; A second step of determining characters flowing on the TV screen; A third step of removing redundant characters from the flowing characters and synthesizing them into a certain percentage of sentences; And a fourth step of storing and displaying the synthesized sentence.

Therefore, the present invention has the effect of detecting any character displayed on the screen and displaying the caption information in an easy to understand manner.

Description

Moving character recognition and playback apparatus and method on a TV screen

Since this is a trivial issue, I did not include the contents of the text.

FIG. 3 is a block diagram of a moving picture recognizing and reproducing apparatus of a TV screen according to the present invention; FIG.

Claims (8)

A video signal processing means for selectively processing an external input signal or a broadcast signal into luminance and color signals; Synchronization detecting means for detecting and outputting a reference synchronization signal from an output signal of the video signal processing unit; Moving character detection means for detecting a moving character in the output signal of the video signal processing unit and digitizing the moving character; Control and character organizing means for organizing the moving characters of the moving character detecting means without duplication and controlling the entire system; Storage means for storing a moving character arranged in the control and character organizing means at a specific address and outputting it when necessary; And output signal processing means for selectively displaying the moving character stored in the storing means and the output signal of the video signal processing unit. The method of claim 1, further comprising: The moving character detection unit detects the output signal separated by the Y / C processing unit 14 for each of the horizontal and vertical sections, recognizes that it is a moving subtitle character, and informs the moving character detection unit. An A / D converter for digitizing the output signal of the moving letter detection unit according to a sampling signal of a predetermined ratio; A counter for outputting a sampling signal of a predetermined ratio to the A / D converter by a counter control signal of the control and character rearrangement means; And a D / A converter for converting a rubbing signal outputted from the storage means into an analog character signal. The method of claim 1, further comprising: Wherein the control and character organizing means comprises: a temporary storage unit for temporarily storing and outputting a digitized character signal in the A / D converter as a moving character of a predetermined section by a control signal; A redundant character removal unit for removing redundant characters between moving characters of a predetermined section output from the temporary storage unit; A character synthesizer for synthesizing the characters output from the redundant character removal unit; And a CPU for recognizing a synchronization signal of the synchronization detecting unit and a signal indicating a moving character in the moving character detecting unit according to a user command and outputting a count control signal and various control signals. . 2. The apparatus of claim 1, wherein the storage means comprises: a sentence formation unit for holding a character string synthesized by the character synthesis unit for a predetermined period; A memory unit for storing a character string of the sentence forming unit at a specific address and outputting address data and outputting a character string if necessary; And a buffer unit for receiving a character string of the memory unit, temporarily storing the character string, and outputting the character string to the D / A converter. The apparatus of claim 1, wherein the output signal processing means comprises: a second switching unit for switching output signals of the buffer unit and the Y / C processing unit according to a second switching control signal; And an image signal converting unit for converting an output signal of the second switching unit into a display signal. To recognize and play the moving character generated on the TV screen; A first step of selecting a broadcast signal or an external signal and separating the broadcast signal or the external signal into a luminance signal and a color signal; A second step of determining characters flowing on the TV screen; A third step of removing redundant characters from the flowing characters and synthesizing them into a certain percentage of sentences; And a fourth step of storing and displaying the synthesized sentence. The method of claim 6, further comprising: The second step includes a first step of detecting a reference synchronization signal from a luminance signal; And a second step of detecting and recognizing characters flowing according to the synchronization signal. The method of claim 6, further comprising: Wherein the second step detects characters flowing through computation between character pulses of horizontal synchronization lines having a time difference. ※ Note: It is disclosed by the contents of the first application.