Global Patent Index - EP 1162563 A1

EP 1162563 A1 2001-12-12 - Small-scale and low-power consumption multipliers and filter circuits

Title (en)

Small-scale and low-power consumption multipliers and filter circuits

Title (de)

Multiplizierer- und Filterschaltungen geringen Masstabs und mit geringem Leistungsverbrauch

Title (fr)

Circuits de multiplication et de filtrage à faible encombrement et consommation

Publication

EP 1162563 A1 (EN)

Application

EP 00112437 A

Priority

EP 00112437 A

Abstract (en)

A multiplication of digital data by small-scale and low-power consumption circuits. ANDs of all combinations of the respective bits of first digital data and the respective bits of second digital data are generated. A capacitive coupling is configured by a plurality of capacitances each having a capacity proportional to the sum of weights of pair of bits corresponding to each AND, an output of the capacitive coupling is connected to an inverting amplifier, and a multiplication result is output as analog data. <IMAGE>

IPC 1-7 (main, further and additional classification)

G06J 1/00

IPC 8 full level (invention and additional information)

G06J 1/00 (2006.01)

CPC (invention and additional information)

G06J 1/00 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

EP 1162563 A1 20011212

INPADOC legal status


2004-06-02 [18W] APPLICATION WITHDRAWN

- Effective date: 20040407

2002-09-04 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB NL

2001-12-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000609

2001-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB NL

2001-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-12 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI