Digital TV receiver
AssigneeLG Electronics Inc.
InventorJung Sig Jun
Life of this patent
Estimating the term…
Abstract
A device of digital TV receiver includes an A/D converter for converting an analog passband signal into a digital passband signal, a carrier recovery for converting the digital passband signal into a digital baseband signal, and a symbol clock recovery for calculating the digital passband real/imaginary signals of the A/D converter or the digital baseband real/imaginary signals of the carrier recovery and squaring the calculated result, detecting timing error information, and generating and outputting two times the frequency of a symbol clock recovered from the detected timing error information.
Claims23
A digital TV receiver, comprising:
- an A/D converter for converting an analog passband signal into a digital passband signal;
- a carrier recovery for converting the digital passband signal into a digital baseband signal;
- and
- a symbol clock recovery for detecting timing error information by calculating digital-real/imaginary-passband-signals of the A/D converter or digital-real/imaginary-baseband-signals of the carrier recovery and squaring the calculated result, and for generating and outputting two times the frequency of a symbol clock corrected from the detected timing error information.
A digital TV receiver, comprising:
- an A/D converter for taking a sample of a fixed frequency from an analog passband signal and converting into a digital passband signal;
- a carrier recovery for multiplying a standard carrier signal generated from the process of the carrier recovery of the digital passband signal and converting into the digital baseband signal;
- a first resampler for taking a sample of two times the frequency of the symbol clock from the digital baseband real/imaginary signals generated from the carrier recovery and interpolating;
- and
- a symbol clock recovery for detecting timing error information by calculating the digital passband signal or the digital baseband signal and squaring the calculated result, and for generating and outputting the two times frequency of the symbol clock frequency corrected from the detected timing error information.
A digital TV receiver, comprising:
- an A/D converter for sampling an analog passband signal with two times the frequency of a symbol clock for converting the analog passband signal into a digital passband signal;
- a carrier recovery for multiplying a standard carrier signal generated from the process of the carrier recovery by the digital passband signal and converting into the digital baseband signal;
- and
- a symbol clock recovery for detecting timing error information by calculating the digital passband signal or the digital baseband signal and squaring the calculated result, and for generating and outputting the two times frequency of the symbol clock frequency corrected from the detected timing error information.
Dependencies are inferred from the claim text.