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:
Feb. 05, 2019
Filed:
Sep. 06, 2017
Apple Inc., Cupertino, CA (US);
Baris Cagdaser, Sunnyvale, CA (US);
Derek K. Shaeffer, Redwood City, CA (US);
Hopil Bae, Sunnyvale, CA (US);
Jesse Aaron Richmond, San Francisco, CA (US);
Jie Won Ryu, Campbell, CA (US);
Kingsuk Brahma, Mountain View, CA (US);
Mohammad B. Vahid Far, San Jose, CA (US);
Shingo Hatanaka, San Jose, CA (US);
Yafei Bi, Los Altos Hills, CA (US);
Yuichi Okuda, Saitama, JP;
APPLE INC., Cupertino, CA (US);
Abstract
A device includes a resistor string that includes a plurality resistors with voltage taps disposed therebetween. The device may select one particular voltage tap of the plurality of voltage taps based on received gray level data for a pixel of a display. The device also includes a first amplifier that may be coupled to a first terminal end of the resistor string. The device additionally includes a second amplifier that may be coupled to a second terminal end of the resistor string, wherein the plurality of voltage taps may each supply a tap voltage derived from a voltage between the first amplifier and the second amplifier, wherein any tap amplifier of the device coupled to a voltage tap of the plurality of voltage taps provides a reference voltage thereto.