Frame converter and conversion method, and digital camera and monitor system

Application Number: 00108222
Application Date: 2000.04.30
Publication Number: 1272748
Publication Date: 2000.11.08
Priority Information: 1999/4/30 JP 124952/1999
International: H04N5/262
Applicant(s) Name: Matsushita Electric Industrial Co., Ltd.
Inventor(s) Name: Sasaki Yutobi;Shino Toshiaki
Patent Agency Code: 11038
Patent Agent: ma gao
Abstract A plurality of digital cameras that are synchronized are connected to a switcher, thus constructing a digital monitoring system in which image signals from the cameras are switched and received. A method of switching the image signals includes the steps of setting transmission timings and transmission cycles of I frames from the digital cameras, buffering the image signals of one cycle from the cameras, and extracting necessary I frames from the buffered image signals. Even though the digital image signals include frames depending upon other frames such as P frame and B frame, the I frames are received by switching operation.