Infrared Emitter in Projection Display Television

• US 20130002831A1
• Filed: 10/31/2011
• Published: 01/03/2013
• Est. Priority Date: 06/29/2011
• Status: Abandoned Application

• Current Assignee: Mitsubishi Electric US Incorporated (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Electric Visual Solutions America Inc. (Mitsubishi Electric Corporation)
• Inventors: Davis, Charles, Naka, Masafumi
• Application Number:
  US13/285,190
• Publication Number:
  US 20130002831A1
• Time in Patent Office: Days
• US Class Current: 348/51
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 2213/001 Constructional or mechanical details

Abstract

An IR emitter internally mounted behind the screen of a projection television apparatus. The IR emitter is mounted so as not to interfere with the image display light path. The IR emitter is mounted so that IR rays are reflected off the mirror and exit through the screen of the projection television. The IR emitter includes one or more IR type LEDs.

Claims

1. A projection television apparatus comprising

an enclosure,

a display screen mounted on the enclosure,

a reflector mirror positioned within the enclosure and optically coupled to the display screen,

an image projection engine positioned within the enclosure and optically coupled to the reflector mirror, and

an infrared emitter positioned within the enclosure and optically coupled to the reflector mirror, wherein infrared light signals emitted from the infrared emitter are reflected off the reflector mirror and exit through the display screen.

2. The projection television of claim 1 wherein the light path of the infrared light signals emitted from the infrared emitter between the infrared emitter to the reflector mirror does not interfere with an image display light path of light emitted from the image projection engine.

3. The projection television of claim 1 wherein the infrared emitter includes a plurality of laser emitting diodes (LEDs).

4. The projection television of claim 3 wherein the LEDs are arranged in an array.

5. The projection television of claim 1 wherein the infrared emitter includes a one or more laser emitting diodes (LEDs).

6. The projection television of claim 1 further comprising a video/graphics processor coupled to the image projection engine.

7. The projection television of claim 6 further comprising a control system coupled to the video/graphics processor and the infrared emitter.

8. The projection television of claim 7 wherein the control system includes a processor and IR protocol module.

9. The projection television of claim 8 wherein the control system further includes a 3D IR protocol module.