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:
Dec. 17, 1996
Filed:
Nov. 15, 1994
Tao Lin, Fremont, CA (US);
Sierra Semiconductor Corporation, San Jose, CA (US);
Abstract
A programmable frequency synthesizer includes a first memory (e.g., ROM) for storing a plurality of pre-programmed frequencies, a second memory (e.g., RAM) for storing at least one user input programmable frequency, and dual purpose frequency synthesizer inputs for providing command address information to select one of the pre-programmed frequencies from the first memory and for providing serial data representing a user input programmable frequency to be stored in the second memory. The frequency synthesizer further includes a control input and decoder for directing the address information and the user input programmable frequency data to the first or second memory, respectively.