Title:
残留側波帯変調信号の搬送波独立タイミング回復システム
Document Type and Number:
Japanese Patent JP3649735
Kind Code:
B2
Abstract:
A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format with a one-dimensional data constellation includes a first carrier recovery network (18), an equalizer (20), and a second carrier recovery network (22, 30, 62). A multiple stage quantizer network (50, 66) exhibiting progressively finer resolution is associated with the operation of the equalizer for providing blind equalization without need of a "training" signal. The second carrier recovery network includes a phase detector (30) wherein a one-symbol delayed (312) input signal and a quantized (310) input signal are multiplied (316), and an unquantized input signal and a quantized (310) one-symbol delayed (314) input signal are multiplied (318). Signals produced by the multiplication are subtractively combined (320) to produce an output signal representing carrier phase error.
Inventors:
Stroll, Christopher, Hugh
Jafe, stephen, todd
Jafe, stephen, todd
Application Number:
JP52468495A
Publication Date:
May 18, 2005
Filing Date:
March 13, 1995
Export Citation:
Assignee:
RCA THOMSON LICENSING CORPORATION
International Classes:
H03D1/24; H04L25/03; H04N7/04; H04L25/06; H04L27/01; H04L27/02; H04L27/06; H04N5/21; H04N5/44; H04N5/455; H04N7/045; (IPC1-7): H04N5/455; H04L27/06
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe