| 摘要 |
<p>PURPOSE:To obtain the compatibility with the existing TV system in each system by transmitting a wide aspect ratio image signal from an image pickup system by converting, etc., it to a progressive scanning sequence of the prescribed number of scanning lines, and executing demodulation and scanning number conversion, etc., on the receiving side. CONSTITUTION:With respect to a signal sequence VSW by a wide aspect ratio image pickup system 1, a conversion processing of the number of scanning lines, a scanning form, etc., is executed by a scanning converting circuit 2, and the number of scanning lines is converted to N pieces of progressive scanning signal sequences VSN. From this sequence VSN, a reinforcing signal LD placed in the upper and the lower mask parts is formed by a reinforcing signal generating circuit 3, and also, converted to a signal of the same scanning form as the existing TV system by a sequential interlace scanning converting circuit 5, both converting signals pass through encoding circuit 4, 6, respectively and converted signals are placed in the upper and the lower areas and the central area by a post-processing circuit 7, become a TV signal of a letter box system and is transmitted. On the receiving side, the processing of demodulation, scanning line number conversion, etc., is executed in the same way, and a transmission method of a wide aspect ratio TV signal having compatibility with the existing TV system in a transmission system, an image pickup system and a display system is obtained.</p> |
