Command sensor in projection display apparatus

Details Command sensor in projection display apparatus Command sensor in projection display apparatus

1988-11-07

1990-07-10

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358231, 3581941, 455603, H04N 574, H04N 931

Patent

active

049410369

ABSTRACT:
A back-projection picture display apparatus which consists of a cabinet including a back-projection screen with a Fresnel lens plate, a video projector unit housed within the cabinet, and a remote control system including a remote controller for generating an infrared beam of a particular characteristic descriptive of a particular command with which the apparatus is operated and a command sensor operable in response to the infrared beam to operate the apparatus to accomplish a mode of operation assigned by such particular command. The command sensor is housed within the cabinet and arranged at a location where the infrared rays of light passing through the Fresnel lens plate are converged.

REFERENCES:
patent: 4337480 (1982-06-01), Bourassin et al.
patent: 4400723 (1983-08-01), Fanizza et al.
patent: 4509211 (1985-04-01), Robbins
patent: 4841368 (1989-06-01), Rumbolt et al.

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