Microprocessor programmable digital remote radio photographic co

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Details

354266, G03B 1503

Patent

active

053593758

ABSTRACT:
A radio transmitter and radio receivers are each connected to microprocessors with non-volatile memories. Binary encoded sequenced pulses are transmitted from the transmitter to program the receivers remotely. A variety of precisely coded signals can be transmitted including a unique transmitter number, a receiver number, data for the receiver, commands for the receiver, and an error detection command. Heterodyne receiver systems with local oscillators, level detectors and noise controllers mix a transmitted 344.035 MHZ signal with a local 333.335 MHZ signal to generate an intermediate frequency of 10.7 MHZ to which the filters are tuned. Over 100 dB of gain is available in the receiver amplifiers making it very sensitive. Single activation, multiple activation, sequencing, and delays are all programmable with a number of receivers. Applications include activating photographic equipment such as remote lighting, additional cameras, light positioning devices, testing devices, and other photographic applications requiring remote programmable control ranging over 1000 feet with high accuracy and coded security.

REFERENCES:
patent: 4816850 (1989-03-01), Philipeaux et al.
patent: 5159375 (1992-10-01), Taniguchi et al.
patent: 5283610 (1994-02-01), Sasaki

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