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1. (WO2007010889) ADAPTIVE DIGITAL FILTER, FM RECEIVER, SIGNAL PROCESSING METHOD, AND PROGRAM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/010889 International Application No.: PCT/JP2006/314153
Publication Date: 25.01.2007 International Filing Date: 18.07.2006
Chapter 2 Demand Filed: 30.01.2007
IPC:
H03H 21/00 (2006.01) ,H03H 17/02 (2006.01) ,H03H 17/06 (2006.01) ,H04B 3/06 (2006.01) ,H04B 7/005 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
21
Adaptive networks
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17
Networks using digital techniques
02
Frequency-selective networks
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17
Networks using digital techniques
02
Frequency-selective networks
06
Non-recursive filters
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
3
Line transmission systems
02
Details
04
Control of transmission; Equalising
06
by the transmitted signal
[IPC code unknown for H04B 7/05]
Applicants:
日本電気株式会社 NEC CORPORATION [JP/JP]; 〒1088001 東京都港区芝五丁目7番1号 Tokyo 7-1, Shiba 5-chome, Minato-ku, Tokyo 1088001, JP (AllExceptUS)
宝珠山 治 HOSHUYAMA, Osamu [JP/JP]; JP (UsOnly)
杉山 昭彦 SUGIYAMA, Akihiko [JP/JP]; JP (UsOnly)
Inventors:
宝珠山 治 HOSHUYAMA, Osamu; JP
杉山 昭彦 SUGIYAMA, Akihiko; JP
Agent:
宮崎 昭夫 MIYAZAKI, Teruo; 〒1070052 東京都港区赤坂1丁目9番20号 第16興和ビル8階 Tokyo 8th Floor, 16th Kowa Bldg., 9-20, Akasaka 1-chome, Minato-ku, Tokyo 1070052, JP
Priority Data:
2005-20672215.07.2005JP
Title (EN) ADAPTIVE DIGITAL FILTER, FM RECEIVER, SIGNAL PROCESSING METHOD, AND PROGRAM
(FR) FILTRE NUMERIQUE ADAPTATIF, RECEPTEUR FM, PROCEDE DE TRAITEMENT DE SIGNAL ET PROGRAMME ASSOCIE
(JA) 適応ディジタルフィルタ、FM受信機、信号処理方法、およびプログラム
Abstract:
(EN) An adaptive digital filter includes: a filter unit having a plurality of multipliers (3360 to 336N-1) grouped into at least one multiplier and the other multipliers according to expectation values of filter coefficients and generating a first signal by convolution of an input signal and a filter coefficient; an adder (338) for adding an input signal inputted to at least one multiplier (336M-1)and the first signal so as to output a second signal; and coefficient control units (318 3190 to 319N-1) for controlling the filter coefficient according to a difference between an index value obtained from the second signal and the target signal.
(FR) L'invention porte sur un filtre numérique adaptatif qui comprend : une unité de filtre possédant une pluralité de multiplicateurs (3360 à 336N-1) regroupés dans au moins un multiplicateur et dans les autres multiplicateurs, selon des valeurs d'espérance de coefficients de filtre, et qui génèrent un premier signal par convolution d'un signal d'entrée et d'un coefficient de filtre; un sommateur (338) conçu pour additionner un signal d'entrée entré dans au moins un multiplicateur (336M-1) et le premier signal, de manière à produire un deuxième signal; et des unités de contrôle de coefficient (318, 3190 à 319N-1) servant à contrôler le coefficient de filtre en fonction d'une différence entre une valeur d'indice obtenue à partir du deuxième signal et du signal cible.
(JA)  本発明の適応ディジタルフィルタは、フィルタ係数の期待値に基づいて少なくとも1つの乗算器と他の乗算器とにグループ分けされた複数の乗算器336~336N-1を含み、入力信号とフィルタ係数との畳み込み演算によって第1の信号を生成するフィルタ部と、少なくとも1つの乗算器336M-1に入力される入力信号と第1の信号とを加算して第2の信号を出力する加算器338と、第2の信号から導出した指標値と目標信号との誤差に基づいてフィルタ係数を制御する係数制御部318、319~319N-1とを有する構成である。
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP1906530JPWO2007010889US20090207955CN101268614