Infrared communications scheme

Details Infrared communications scheme Infrared communications scheme

1997-10-20

1999-05-25

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359182, 359142, H04B 1000

Patent

active

059074191

ABSTRACT:
Infrared communications scheme for an infrared transmitting device having a light emitting diode (LED) ramps up the power of a carrier frequency signal applied to the LED in a given time interval to a given value. The carrier frequency signal is then frequency modulated with a data message for transmission by the LED. The power of a DC signal applied to the LED may then be ramped up in a given time interval to a given value before the carrier frequency signal is modulated with a data message. After transmission of the data message, the power of the carrier frequency signal applied to the LED is ramped down in a given time interval to a given value. The power of the DC signal applied to the LED is then ramped down in a given time interval to a given value.

REFERENCES:
patent: 3927316 (1975-12-01), Citta
patent: 4221932 (1980-09-01), Anglikowski et al.
patent: 4375106 (1983-02-01), Voll
patent: 5331450 (1994-07-01), Heep et al.
patent: 5508836 (1996-04-01), Decaro et al.
patent: 5574585 (1996-11-01), Thaler et al.
patent: 5602664 (1997-02-01), Doyle
patent: 5621384 (1997-04-01), Crimmins et al.

Affiliated with

Also associated with

Rating

Infrared communications scheme does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared communications scheme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared communications scheme will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-404514