| 摘要 |
PURPOSE:To reproduce a chroma key signal corresponding to the adjustment state of a studio for a day by storing a control data for each chroma key source signal to a chroma key information storage section in advance in the stage of rehearsal for the day so as to allow the chroma key source signal to have only been selected in a take. CONSTITUTION:A video mix section 15 mixes source signals V1, V2 selected by a video changeover sections 11, 12 in response to a chroma key signal K. Upon the receipt of a switching control signal Ss, a chroma key control section 18 reads a chroma key control data corresponding to a chroma key source signal V3 selected by a video changeover section 13 from a chroma key information storage section 19 and generates a chroma key control signal Sk and sends it to a chroma key generating section 14. The chroma key generating section 14 generates the chroma key signal K in response to the chroma key control signal Sk. |
