| 摘要 |
PURPOSE:To shorten the program setting time, by generating timing pulses synchronized with a synchronizing signal to record program data and video information, which should be processed by the progam, on the same video disc. CONSTITUTION:The color signal of a color signal circuit 33 is converted to 1.53MHz and is applied to a synthesizing circuit 34, and the pattern signal of a luminance signal circuit 31 is restrained to 0.3-3MHz and is synthesized with the synchronizing signal from a synchronizing signal generating circuit 41 in a synthesizing circuit 32, and this synthesized signal is synthesized with the color signal in the circuit 34. A timing signal synchronized with the synchronizing signal is generated from a timing pulse generating circuit 43 to which signals from the circuit 41 and a clock generating circuit 42 are inputted, and data read out from a program memory 45 is converted to serial data in a parallel-serial converting circuit 46 and is inputted to the circuit 31. Normally, the part of the synchronizing signal to which the pattern signal is superposed is divided to 2n- number of sections, and one section consists of one bit to insert program data, and the output of the circuit 34 is applied to an electron beam recorder 40 through a video signal frequency modulating circuit 35 and is recorded. |
