Title:
TELEVISION SIGNAL TRANSMISSION SYSTEM WITH CARRIER OFFSET COMPENSATION
Document Type and Number:
WIPO Patent Application WO1992016072
Kind Code:
A3
Abstract:
A television signal transmission system is used for transmitting an N-level video related data signal. The data signal is processed prior to transmission such that the majority of N-level symbols comprise a non-negative level for facilitating receiver lock-up. An in-phase pilot component may be added to the transmission by D.C. offsetting the processed signal to further facilitate receiver lock-up. The processed signal is precoded by a modulo-N filter and postcoded by a complementary linear filter in the receiver to reduce interfering NTSC components. In the absence of interfering NTSC components, a complementary modulo-N postcoding filter may be used in the receiver to provide improved signal to noise performance.
Inventors:
CITTA RICHARD W (US)
HALOZAN SCOTT F (US)
SGRIGNOLI GARY J (US)
HALOZAN SCOTT F (US)
SGRIGNOLI GARY J (US)
Application Number:
PCT/US1992/001893
Publication Date:
October 29, 1992
Filing Date:
March 05, 1992
Export Citation:
Assignee:
ZENITH ELECTRONICS CORP (US)
International Classes:
H04N5/44; H04N7/015; H04N7/08; H04N7/24; H04N7/26; H04N21/2383; H04N21/438; (IPC1-7): H04N7/13
Foreign References:
| US4951146A | 1990-08-21 | |||
| US5003555A | 1991-03-26 | |||
| US5086340A | 1992-02-04 | |||
| US5087975A | 1992-02-11 |
Download PDF: