The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2009
Filed:
Oct. 10, 2003
Ernest C. Chen, San Pedro, CA (US);
Weizheng W. Wang, Rancho Palos Verdes, CA (US);
Guangcai Zhou, Reseda, CA (US);
Tung-sheng Lin, Alhambra, CA (US);
Joseph Santoru, Agoura Hills, CA (US);
Ernest C. Chen, San Pedro, CA (US);
Weizheng W. Wang, Rancho Palos Verdes, CA (US);
Guangcai Zhou, Reseda, CA (US);
Tung-Sheng Lin, Alhambra, CA (US);
Joseph Santoru, Agoura Hills, CA (US);
The DIRECTV Group, Inc., El Segundo, CA (US);
Abstract
A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder, for encoding a combined upper layer signal and lower layer signal, a delay, communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.