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公开(公告)号:US4992820A
公开(公告)日:1991-02-12
申请号:US421619
申请日:1989-10-13
申请人: Yoshiiku Kikukawa , Masayuki Nakasa , Tadahiro Yoshida , Mashio Kitaura , Masaaki Nakai , Takanobu Omaki , Nobuyuki Tanijuchi
发明人: Yoshiiku Kikukawa , Masayuki Nakasa , Tadahiro Yoshida , Mashio Kitaura , Masaaki Nakai , Takanobu Omaki , Nobuyuki Tanijuchi
摘要: A camera system including a camera body and a camera accessory attachable to the camera body, such as an interchangeable back lid, an interchangeable lens, a flash device and so on, is disclosed. In the system, a plurality of circuits provided in plurality of camera accessories are controlled by a microcomputer provided in the camera body. Data is transmitted between the microcomputer and the circuits using a serial data bus and synchronizing clock line connected therebetween. The circuit to receive the data sent from the microcomputer, or the circuit which should send the data to the microcomputer are selected by the microcomputer through chip select lines provided between the microcomputer and each circuit.
摘要翻译: 公开了一种照相机系统,其包括相机主体和附接到照相机主体的相机附件,诸如可互换后盖,可互换镜头,闪光灯装置等。 在该系统中,设置在多个相机附件中的多个电路由设置在相机机体中的微型计算机控制。 使用串行数据总线在微机和电路之间传输数据,同时连接其间的同步时钟线。 由微型计算机通过微型计算机和各电路之间提供的芯片选择线选择接收从微型计算机发送的数据的电路,或将数据发送到微机的电路。