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:
Jun. 29, 1993
Filed:
Jan. 17, 1992
Bar-Giora Goldberg, San Diego, CA (US);
Sciteq Electronics, Inc., San Diego, CA (US);
Abstract
A fractional divider using a counter means to provide fractionality. A divider is used to divide the VCO output signal by N or N+1 as selected. A divider control circuit controls the divider to divide by the appropriate divisor to obtain the selected output frequency. The fractional divider circuit counts divider control signals which represent a first division period. The fractional divider circuit establishes a second period of multiple first periods and at the terminal count of each second period, provides a selected number of fractional control signals to the divider control to cause division by a different number, such as N+1. The fractional divider comprises a first counter programmed to count first periods and issue its terminal count upon receiving the programmed count of first periods. The fractional divider also comprises a second counter to provide the selected number of fractional control signals upon receipt of the terminal count of the first counter. The first and second counters thus operate as a fraction, e.g. F/K, to result in a fractional reference frequency.