Modulation device

Details Modulation device Modulation device

H - Electricity

04

N

350/27

H04N 7/16 (2006.01) H04N 5/40 (2006.01)

Patent

CA 1259400

ABSTRACT OF DISCLOSURE A modulation device especially suitable for use in a joint TV reception device for tuning input video and audio signals to various TV channel frequencies. The de- vice includes a modulator for modulating a carrier wave with the video and audio signals to provide a modulated signal, a mixer for mixing the modulated signal with a local oscilla- tion signal to provide mixed signals, a wide band amplifier for amplifying the mixed signals and a variable low-pass filter for filtering the amplified mixed signals to provide a TV broadcasting signal of desired frequency. The device further includes a control device for controlling the fre- quency of the local oscillation signal and the cutoff fre- quency of the variable low-pass filter so as to cancel a higher harmonic component from the output signal to avoid undesirable interference.

545116

Affiliated with

Also associated with

Rating

Modulation device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1212909