Bildprojektionsvorrichtung, Speichersteuervorrichtung, Laserprojektor und Speicherzugriffsverfahren

Details

Veröffentlichungs-Nr.

EP2456208

Aktenzeichen

EP11189714

Anmeldetag

18. November 2011

Veröffentlichung

12. März 2014

Rechtsraum

EP

IPC

H04N9/31

Abstract

An image projection apparatus includes an input part (49) that inputs image data, a frame memory (58) that stores the image data, a laser oscillator (60) that radiates a laser to a screen, a deflection part (70) including a reflective optical element and configured to oscillate the reflective optical element with respect to two perpendicularly intersecting axes, a storage part (63) that stores coefficient data of a polynomial expression, an irradiation position calculating part (57) that calculates an irradiation position based on a coefficient obtained by using the coefficient data and an oscillation angle of the reflective optical element, an address calculating part (64) that calculates an address in the frame memory (58) corresponding to the irradiation position, a memory control part (100) that reads out pixel data of the address, and a laser drive part (59) that oscillates the laser oscillator in accordance with a luminance corresponding to the pixel data.

Anmelder

Firma

Ricoh Company, Ltd.

Land

🇯🇵 Japan

Fachgebiete