略語大辞典 [C] 19 SOF start-of-frame (データ通信の)フレーム開始. データ通信での区切り信号.start-of-frame; a delimiter in static image data communications, which identifies the boundaries of information exchanges; ref. EOF(end-of-frame); [C]. 丸善「略語大辞典」JLogosID : 11859980