VIDEO SIGNAL PROCESSOR
PURPOSE:To obtain a multi-picture together with a normal picture and to obtain a same effect without using the memory of large capacity by inserting the multi-picture to a large screen. CONSTITUTION:The title device is provided with a display memory 5 to store a video signal to be obtained from a vi...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To obtain a multi-picture together with a normal picture and to obtain a same effect without using the memory of large capacity by inserting the multi-picture to a large screen. CONSTITUTION:The title device is provided with a display memory 5 to store a video signal to be obtained from a video signal switching part 1, which switches the video signal to be selected by a tuner, the video signal to be inputted from an external part and the reproducing signal of a video tape recorder, etc., and executes the selection of the large picture and a small picture, a memory control part 4 to execute a writing to the display memory 5 based on a synchronous signal in the video signal stored in the display memory 5, a reading from the display memory 5 based on the synchronous signal in a large picture signal or the control of an A/D converting part 3 of a D/A converting part 12, an output switching part 10, which switches the large picture signal and the video signal to be read from the display memory 5, and a central control part 13 to control the video signal switching part 1 and memory control part 4. Thus, the function of the multi-picture can be executed with the small memory capacity. Then, the normal picture can be projected in the large screen and the multi- picture can be projected on the display screen of a cathode ray tube in the small screen. |
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