Patent ID: 9288420
Filing Date: 2016-03-15
CPC Classification: H04H,H04N

Claim Text:
1. A method for reception of digital television signal applied in a digital television signal reception system, said digital television signal reception system including a chip having a low-noise amplifier and a master receiver, at least one slave receiver, and at least one local-oscillator leakage processing unit, the method comprising: receiving at least one digital input signal of television channel at said chip; amplifying said input signal of television channel via said low-noise amplifier; sending said amplified input signal of television channel to said master receiver and said slave receiver; frequency-mixing said amplified input signal of television channel with a signal of a first local oscillator source provided by said master receiver to generate an output signal of first television channel; frequency-mixing said amplified input signal of television channel with a signal of a second local oscillator source provided by said slave receiver separate from said first local oscillator source, to generate an output signal of second television channel, wherein a frequency associated with said second local oscillator source is different from a frequency associated with said first local oscillator source; and executing a digital process in a local-oscillator leakage processing unit to detect and remove from said output signal of second television channel generated by said slave receiver a local-oscillator leakage effect due to said first local oscillator source of said master receiver.