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:
Oct. 17, 2000
Filed:
Jun. 18, 1997
Nadav Ben-Efraim, Cupertino, CA (US);
Christopher Keate, Santa Clara, CA (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
An improved satellite receiver front end architecture having a tuner chip and a demodulator/decoder chip. The tuner chip includes a lowpass filter having a configurable cutoff frequency, and the tuner chip uses a frequency signal to provide accurate adjustment of the cutoff frequency. A clock signal having a clock frequency is converted into a control voltage which determines the cutoff frequency of the lowpass filter. Consequently, the cutoff frequency may be increased by increasing the clock frequency, or decreased by decreasing the clock frequency. This configuration provides for improved cutoff frequency control in the presence of signal interference.