Regulator arrangement useful in an infrared remote control trans

Details Regulator arrangement useful in an infrared remote control trans Regulator arrangement useful in an infrared remote control trans

1979-07-20

1981-04-28

Yusko, Donald J.

Communications: electrical

Digital comparator systems

323299, 307265, 307360, 340168B, H04Q 914, H03K 504, G05F 144

Patent

active

042648963

ABSTRACT:
In an infrared (IR) remote control transmitter, a main amplitude regulator is provided to regulate the amplitude of pulses applied to the transmitter's driver so as to maintain infrared radiation at a level consistent with proper operation but well below a safe limit for IR radiation under normal operating conditions. An auxiliary amplitude regulator is also provided to regulate the amplitude of pulses applied to the driver so as to maintain infrared radiation below the safe limit if the amplitude exceeds a predetermined threshold level due to a component failure of the main amplitude regulator. An average detector is also coupled to the auxiliary amplitude regulator so that the amplitude of the pulses applied to the driver is reduced should their width exceed beyond a desired value due to a component failure or misoperation of the transmitter.

REFERENCES:
patent: 3967159 (1976-06-01), Dendy et al.
patent: 4045777 (1977-08-01), Mierzwinski et al.
patent: 4072889 (1978-02-01), Witmer et al.
patent: 4099163 (1978-07-01), Worley et al.

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