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Title:
FFT-BASED MULTICHANNEL VIDEO RECEIVER
Document Type and Number:
WIPO Patent Application WO/2005/109866
Kind Code:
A1
Abstract:
A multichannel video receiver having an analog-to-digital conveyer, fast-Fourier transform circuit and inverse-Fourier transform circuit. The analog-to-digital converter circuit generates a digitized representation of a frequency band used to convey a plurality of video signals, and the fast-Fourier transform circuit generates a frequency-domain representation of the digitized representation of the frequency band. The inverse-Fourier transform circuit recovers, from the frequency-domain representation, a plurality of digitized time-domain signals that correspond to the plurality of video signals.

Inventors:
Yun, Weijie (6649 Neptune Court, San Jose, CA, 95120, US)
Sheng, Samuel (15911 Camino del Cerro, Los Gatos, CA, 95032, US)
Application Number:
PCT/US2005/015159
Publication Date:
November 17, 2005
Filing Date:
May 02, 2005
Export Citation:
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Assignee:
TELEGENT SYSTEMS, INC. (555 North Mathilda Avenue, Suite 110 Sunnyvale, CA, 94085, US)
Yun, Weijie (6649 Neptune Court, San Jose, CA, 95120, US)
Sheng, Samuel (15911 Camino del Cerro, Los Gatos, CA, 95032, US)
International Classes:
H04N7/173; B41J2/525; B41J29/46; C07C67/52; C07C67/54; C07C69/82; G01S1/02; G01S5/02; G01S5/06; G01S5/12; G01S19/27; G02B7/02; G02B26/10; G03B5/00; G03B7/093; G03B11/00; G03B17/02; G03G15/00; G03G15/01; G04G7/02; G06F1/04; G06F1/16; G06F3/00; G06F3/12; G06F3/14; G06F9/46; G06F9/50; G06F11/00; G06F11/10; G06F12/10; G06F13/00; G06F13/12; G06F13/36; G06F13/362; G06F15/00; G06F15/16; G06F15/173; G06F21/24; G06K9/00; G06K9/62; G06K17/00; G06K19/00; G06T1/00; G06T3/00; G06T9/00; G08C19/16; G09C1/00; G09G1/16; G09G1/28; G09G3/02; G09G5/00; G09G5/02; G09G5/36; G09G5/397; G10L19/00; G11B20/10; G11B20/14; G11B20/18; H01L27/00; H01L27/14; H01L27/146; H01Q1/24; H01Q21/24; H03D7/00; H03K3/356; H03K5/13; H03L7/091; H03M13/03; H03M13/13; H03M13/23; H03M13/27; H03M13/29; H04B1/16; H04B1/26; H04B1/707; H04B7/005; H04B7/185; H04B7/24; H04B7/26; H04B14/00; H04B17/00; H04H60/72; H04J1/00; H04J3/06; H04J13/00; H04J13/16; H04L1/00; H04L1/18; H04L7/00; H04L9/00; H04L9/08; H04L9/10; H04L9/14; H04L9/28; H04L9/32; H04L12/08; H04L12/16; H04L12/24; H04L12/26; H04L12/28; H04L12/417; H04L12/46; H04L12/54; H04L12/801; H04L12/841; H04L12/853; H04L25/02; H04L25/03; H04L25/49; H04L25/497; H04L27/02; H04L27/10; H04L27/156; H04L27/18; H04L27/34; H04L29/06; H04L29/08; H04L29/12; H04L29/14; H04M1/00; H04M1/247; H04M1/66; H04M1/723; H04M1/725; H04M3/00; H04M3/16; H04M3/22; H04M3/42; H04M11/00; H04M11/06; H04N1/028; H04N1/031; H04N1/191; H04N1/46; H04N1/56; H04N1/60; H04N5/225; H04N5/232; H04N5/262; H04N5/272; H04N5/335; H04N5/367; H04N5/44; H04N5/455; H04N5/46; H04N5/60; H04N5/64; H04N5/74; H04N5/76; H04N5/765; H04N5/907; H04N5/91; H04N5/92; H04N7/01; H04N7/015; H04N7/08; H04N7/16; H04N7/24; H04N7/26; H04N7/36; H04N7/52; H04N9/31; H04N9/64; H04N9/79; H04N11/20; H04N19/00; H04N21/41; H04N21/414; H04N21/426; H04N21/438; H04Q3/00; H04R3/12; H04W4/06; H04W4/12; H04W4/14; H04W4/16; H04W8/02; H04W8/06; H04W8/08; H04W8/16; H04W8/20; H04W8/26; H04W12/04; H04W12/06; H04W12/10; H04W24/00; H04W24/04; H04W24/08; H04W24/10; H04W28/02; H04W28/08; H04W28/16; H04W28/22; H04W36/04; H04W36/18; H04W36/30; H04W40/22; H04W48/06; H04W48/14; H04W48/16; H04W52/02; H04W52/24; H04W56/00; H04W60/00; H04W64/00; H04W68/00; H04W68/02; H04W72/08; H04W72/12; H04W72/14; H04W76/02; H04W76/04; H04W80/06; H04W84/08; H04W84/12; H04W84/18; H04W88/02; H04W88/04; H04W88/06; H04W88/12; H04W88/18; G11B20/22; H04M1/73; H04N5/04; H04N5/073; H04N5/12; H04N5/38; H04N5/66; H04N5/775; H04N5/85; H04N9/804; H04N17/00; H04N101/00; H04W4/10; H04W8/24; H04W28/04; H04W28/18; H04W36/02; H04W48/08; H04W72/04; H04W74/08; H04W76/06; H04W84/04; H04W88/08; H04W92/12; (IPC1-7): H04N5/44
Domestic Patent References:
WO2002007399A22002-01-24
Foreign References:
US20030118127A12003-06-26
US20030076899A12003-04-24
US20020106009A12002-08-08
Attorney, Agent or Firm:
Shemwell, Charles E. (Shemwell Gregory & Courtney LLP, 4880 Stevens Creek Blvd. Suite 20, San Jose CA, 95129, US)
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