The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2009
Filed:
Dec. 21, 2004
Loan T. Davidoff, Marina Del Rey, CA (US);
Howard S. Nussbaum, Los Angeles, CA (US);
Jackson Y. Chia, San Gabriel, CA (US);
Loan T. Davidoff, Marina Del Rey, CA (US);
Howard S. Nussbaum, Los Angeles, CA (US);
Jackson Y. Chia, San Gabriel, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
An efficient configurable signal filter. The filter includes a first mechanism for receiving a first signal of a first type and a second signal of a second type. A second mechanism selectively filters the first signal during a first mode of operation, and filters the second signal during a second mode of operation. A third mechanism generates control signals. A fourth mechanism automatically configures the second mechanism to operate in the first mode of operation or the second mode of operation based on the control signals. In a specific embodiment, the first type of signal is characterized by a first rate, and the second type of signal is characterized by a second rate. The first signal and the second signal are digital ADC outputs. The second mechanism includes plural filter blocks, each having one or more Multiply-Accumulate (MAC) pipes. Each of the one or more MAC pipes include one or more MAC blocks that are each associated with a coefficient memory data structure of a coefficient memory. The third mechanism or a user selects coefficients from each memory data structure to apply to each MAC block, thereby selectively affecting filter response. The control signals direct multiplexers or switches to configure the MAC pipes in a serial configuration or a parallel configuration corresponding to the first mode of operation or the second mode of operation, respectively.