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. 06, 2016
Filed:
Dec. 29, 2014
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Danielle Griffith, Richardson, TX (US);
Per Torstein Roine, Oslo, NO;
James Murdock, Richardson, TX (US);
Ryan Smith, Sachse, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/32 (2006.01); H03L 7/24 (2006.01); H03B 5/06 (2006.01); H03B 5/36 (2006.01);
U.S. Cl.
CPC ...
H03B 5/06 (2013.01); H03B 5/362 (2013.01); H03B 5/364 (2013.01); H03B 5/368 (2013.01);
Abstract
A circuit includes a crystal oscillator to generate an output frequency for a circuit. A driving oscillator generates a startup signal having a driving frequency that is provided to activate the crystal oscillator. The driving frequency of the startup signal is varied over a range of frequencies that encompass the operating frequency of the crystal oscillator to facilitate startup of the crystal oscillator.