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. 02, 2014
Filed:
Feb. 27, 2012
Igor Serikov, Fremont, CA (US);
Guotong Feng, San Jose, CA (US);
Eric Matthew Hansen, Santa Cruz, CA (US);
Michael A. Pogue, Sunnyvale, CA (US);
Igor Serikov, Fremont, CA (US);
Guotong Feng, San Jose, CA (US);
Eric Matthew Hansen, Santa Cruz, CA (US);
Michael A. Pogue, Sunnyvale, CA (US);
Ricoh Co., Ltd., Tokyo, JP;
Abstract
A system for updating an electrophoretic display of an electronic paper device (EPD) has a display driving system comprising a display manager, a compositor, a bounding box list producer, a display controller and a memory storing a bounding box list, a transfer matrix buffer, waveforms and subframes. The display driving system receives one or more display requests from one or more input devices and applications. The display driving system transforms the display requests into bounding boxes and transition matrices of pixel values. The display driving system collapses overlapping bounding boxes into non-overlapping bounding boxes. The display driving system generates subframes using the bounding boxes, the transition matrices and waveforms containing voltage information. The subframes are used to drive the electrophoretic display to display an image.