Infrared telephone with handset and base unit

Details Infrared telephone with handset and base unit Infrared telephone with handset and base unit

H - Electricity

04

M

H04M 1/00 (2006.01) H04B 10/22 (2006.01) H04M 1/737 (2006.01) H04M 9/00 (2006.01)

Patent

CA 2085047

Abstract An infrared telephone having a first station and a second station is described. The first station is especially a telephone handset, while the second station is especially a fixedly installed remote station, for example table/wall station (base unit). According to one embodiment the first station and the second station have a single frequency oscillator, respectively, the frequency of which modulated by the electrical signals which have to be transmitted controls not only the power of the associated infrared emitter but is also fed to an associated mixing stage. The signal supplied by the associated infrared receiver is mixed with the modulated frequency of the associated frequency oscillator in the mixing stage, and the sum frequency of the received frequency and the modulated oscillator frequency generated by the mixing step is demodulated by means of a frequency demodulator, wherein the function of receipt is obtained from the resulting signal. According to a further embodiment each station works with two frequency oscillators. Furthermore, the construction of the telephone handset and of the base unit are described.

Affiliated with

Also associated with

Rating

Infrared telephone with handset and base unit 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 telephone with handset and base unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared telephone with handset and base unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1439567