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. 30, 1990
Filed:
Feb. 14, 1989
Applicant:
Inventors:
King F Lee, Hollywood, FL (US);
Frederick L Martin, North Lauderdale, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
331 66 ; 331158 ; 331176 ;
Abstract
Operational characteristics of a crystal reference element (10) are measured during a testing and grading process. Once determined, information representing these operational characteristics are stored in a memory means (16) within the crystal reference element. In this way, the operational characteristics particular to each crystal reference element may be readily retrieved and used to compensate an oscillator circuit (32).