Title: Four-quadrant multiplication circuit
Application Number: 200610167895 Application Date: 2006.12.20
Publication Number: 1975754 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06G7/16;G01R11/00;G01R19/02
Applicant(s) Name: Beijing Zhongxing Microelectronic Co., Ltd. Address:
Inventor(s) Name: Fan Zhijun
Attorney & Agent: wangyi bin wangqi
Abstract:
    The invention discloses a four-quadrant multiplication circuits. The invention will take two roads digital signal from filtering, and with the modulation of synchronized signals, perform the parallel/serial conversion on the input to generate one road signals. The signals comes through a high-pass filter, which consists of a shift unit, first cache unit, second cache unit, third cache unit, fourth cache unit and calculator, to filter on the combined input signals, to attenuate DC bias in signals, and then to calculate the four-quadrant multiplication of the two roads signals contained in the input signals through a serial multiplier.
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