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.

Date of Patent:
Dec. 10, 2019

Filed:

Sep. 07, 2017
Applicant:

Invecas, Inc., Santa Clara, CA (US);

Inventors:

William Loh, Fremont, CA (US);

Venkata N. S. N. Rao, Fremont, CA (US);

Prasad Chalasani, San Jose, CA (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 19/25 (2006.01); G01R 19/255 (2006.01); G01R 13/02 (2006.01); G01R 19/155 (2006.01); G01R 15/12 (2006.01);
U.S. Cl.
CPC ...
G01R 19/2503 (2013.01); G01R 13/0272 (2013.01); G01R 19/155 (2013.01); G01R 19/255 (2013.01); G01R 15/125 (2013.01);
Abstract

A digital voltmeter, where a number of clock pulses for a first ramp voltage to reach an input voltage is determined. Next, a number of clock pulses for a second ramp voltage to reach the input voltage is determined. One of the first and the second ramp voltages having a least number of clock pulses to reach the input voltage is determined. A determination is made for a number of clock pulses for the determined one of the first and the second ramp voltages to reach a reference voltage. A digital code is generated for the input voltage based on the determined number of clock pulses for reaching the reference voltage and the determined least number of clock pulses for reaching the input voltage.


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