Patent ID: 6188446
Filing Date: 2001-02-13
Classification: H04N

Abstract:
Apparatus for combining first and second television signals for propagation on a common propagating device, comprising:a first hybrid which receives said first television signal at a first port thereof, divides said first television signal into two divided signals and outputs the divided first television signals at second and third ports thereof;a second hybrid which receives said divided first television signals at first and second ports thereof, receives a first component of said second television signal at a third port thereof, recombines said divided first television signals into a single signal and outputs a combination of said first television signal and said first component of said second television signal at a fourth port thereof;a third hybrid which receives said combination at a first port thereof, divides said combination into two divided combination signals and outputs the divided combination signals at second and third ports thereof; anda fourth hybrid which receives said divided combination signals at first and second ports thereof, receives a second component of said second television signal at a third port thereof, recombines said divided combination signals into a single combination signal and outputs a combination of said single combination signal and said second component of said second television signal at a fourth port thereof.