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:
Apr. 22, 2014
Filed:
Oct. 18, 2011
Jae Hyun Seo, Daejeon-si, KR;
Hyoungsoo Lim, Daejeon-si, KR;
Heung Mook Kim, Daejeon-si, KR;
Soo IN Lee, Daejeon-si, KR;
Jae Hyun Seo, Daejeon-si, KR;
Hyoungsoo Lim, Daejeon-si, KR;
Heung Mook Kim, Daejeon-si, KR;
Soo In Lee, Daejeon-si, KR;
Intellectual Discovery Co., Ltd., Seoul, KR;
Abstract
Modulating method and apparatus in a broadcasting and communication system are provided. The modulating apparatus includes: a first quadrature phase shift keying (QPSK) modulating unit QPSK-modulating first data including in-phase (I) data and quadrature (Q) data to generate a first signal; a phase rotating unit rotating a phase of the first signal by θ to generate a phase rotated signal; a second QPSK modulating unit QPSK-modulating second data different from the first data and including I' data and Q′ data to generate a second signal; and a layer modulating unit modulating the phase rotated signal and the second signal to output a final signal.