H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/08 (2006.01) H04N 5/44 (2006.01) H04N 7/01 (2006.01)
Patent
CA 2046049
The invention relates to a video signal processing apparatus which can be used when a video signal which is transmitted is displayed onto a screen or a CRT having an aspect ratio (e.g., 9: 16) different from an aspect ratio (e.g., 4: 3) of the video signal. In the invention, when the video signal is time base com- pressed and displayed onto the screen or CRT, a memory to store the digital converted video signal is used, the video signal is written into the memory every two scan periods and is read out of the memory every two scan periods, thereby executing the double-speed scan conversion and also enabling the time base compression to be performed. The optimum display state of video signals of various aspect ratios can be obtained by a small number of memory elements.
Fujimori Toshimitsu
Kawakami Toshikatsu
Marks & Clerk
Matsushita Electric Industrial Co. Ltd.
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