Michael Drew Pogue

US Patent:

20130106806, May 2, 2013

Filed:

Feb 27, 2012

Appl. No.:

13/406130

Inventors:

Igor Serikov - Fremont CA, US
Guotong Feng - San Jose CA, US
Eric Matthew Hansen - Santa Cruz CA, US
Michael A. Pogue - Sunnyvale CA, US

Assignee:

RICOH COMPANY LTD. - Tokyo

International Classification:

G09G 3/34
G06F 3/038

US Classification:

345204, 345107

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.