1986-11-24
1988-02-09
Gellner, Michael L.
354286, 354410, 354413, G03B 7091, G03B 716, G03B 720
Patent
active
047244534
ABSTRACT:
A microprocessor based camera information transmission system capable of electrically transmitting various information on a plurality of different camera accessories from the accessory (Y) to the camera body (X) with the accessory information being selectively provided to the camera body microprocessor (MCP) via a data input register (SR1) in response to the decoded clock output (SR2) from the microprocessor (MCP) for sequentially and serially providing a synchronized serial bit pattern to the microprocessor, (MCP) via the data input shift register (SR1) in accordance with a detected accessory identification code. The camera body (X) includes a flip-flop (FF) and counter (CO) which cooperate with the microprocessor clock to synchronize the serial bit pattern and to provide the corresponding identification code (S1-SN) from the accessory (Y) to the microprocessor (MCP) to set the quantity content of the microprocessor for that accessory (Y). The accessory (Y) includes a condition responsive gate array (ANI-ANn, OR2) for providing accessory information to the camera body (X) in response to a decoded clock output from the microprocessor (MCP) in accordance with the detected identification code.
REFERENCES:
patent: 4509846 (1985-04-01), Nakai et al.
patent: 4540262 (1985-09-01), Nakai et al.
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