1988-07-15
1990-09-11
Perkey, W. B.
354413, 354471, 3541451, 354286, G03B 720, G03B 1505, G03B 1718
Patent
active
049566610
ABSTRACT:
In a camera system having a camera body and at least one camera accessory attachable to the camera body, a plurality of circuit elements are provided in the camera body and in the camera accessory for performing predetermined respective operations. Circuitry in the camera controls the plurality of circuit elements and includes a data bus for connecting the control circuitry with the plurality of circuit elements. The data bus serially sends data from the control circuitry to the plurality of circuit elements and from the plurality of circuit elements to the control circuitry. At least one signal line connects the control circuitry with each of the circuit elements, respectively, for sending clock pulses utilized for synchronizing the data sent through the data bus. A plurality of selecting lines selects, by the control circuitry, which circuit element receives the data from the control circuitry and sends the data to the control circuitry. The control circuitry selects, in accordance with predetermined camera operation, the circuit element which operates through the selecting lines, with the control circuitry receiving data from the selected circuit element through the data bus with pulses through the signal line to calculate data sent to the circuit element according to the predetermined camera operation. The control circuitry sends the calculated data to the selected circuit element through the data bus with pulses through the signal line for operating the circuit element.
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Fujii Akira
Hoda Takeo
Nakai Masaaki
Niwa Masatake
Sahara Masayoshi
Minolta Camera Kabushiki Kaisha
Perkey W. B.
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