COMPATIBILITY OF WIDE-SCREEN TELEVISION TRANSMISSION WITH NON-WIDE-SCREEN TELEVISION TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To transmit a wide-screen TV signal to be displayed in wide-screen and non-wide-screen receivers without introducing a geometrical distortion by utilizing a selecting signal and displaying the selected part of a wide-screen picture of the standard receiver. SOLUTION: Luminance data is written in a luminance line storage device 402 in sampling frequency and read in lower frequency. In a same way, color data is written in a color line storage device 406 by the sampling frequency and read by the lower frequency. While one line storage device 404 (408) is read, the other line storage device 402 (406) is written. Then, the wide-screen TV signalis monitored before transmission and an operator selects the center of interest so as to generate the picture and the signal to be transmitted. A controller 415 receives data including the selecting signal, reproduces the selecting signal and transmits residual data to the TV receiver.