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:
Apr. 05, 2016
Filed:
Aug. 28, 2014
Sorin Laurentiu Negru, San Jose, CA (US);
Sule Cetin, Istanbul, TR;
Parinda Mekara, Mountain View, CA (US);
Sorin Laurentiu Negru, San Jose, CA (US);
Sule Cetin, Istanbul, TR;
Parinda Mekara, Mountain View, CA (US);
Dialog Semiconductor (UK) Limited, London, GB;
Abstract
An electrical current ('I') digital-to-analog converter ('IDAC') () supplies a specified electrical current to at least one light emitting diode. The IDAC () includes a plurality of current sources/sinks (): a. that are connected in parallel so a total amount of current flowing through the at least one LED equals the sum of their individual electrical currents; and b. at any instant in time individual current sources/sinks () are either: 1. turned on: or 2. turned off. When the specified electrical current being supplied exceeds a pre-established threshold (), a sequence of individual current sources/sinks () are turned on ever more quickly to produce a. non-linearly increasing electrical current. When the specified electrical current being supplied is below the pre-established current threshold (), the non-linearly increasing electrical current is supplied by an increasing number of additional current sources/sinks (), each additional current source/sink () producing progressively longer current pulses until that current source/sink {} remains fully on.