Projector

Details Projector Projector

2007-05-01

2007-05-01

Perkey, W. B. (Department: 2851)

Optics: image projectors

With sound accompaniment

C353S119000

Reexamination Certificate

active

10916209

ABSTRACT:
A projector including an ultrasonic speaker that includes an ultrasonic transducer capable of oscillating an acoustic signal in a wide frequency band and reproduces signal sound in the audio frequency band, and a projector main body that includes a projecting optical system that projects a video image on a projecting surface. The ultrasonic speaker and the projector main body are integrated with each other.

REFERENCES:
patent: 6643377 (2003-11-01), Takahashi
patent: 6807281 (2004-10-01), Sasaki et al.
patent: 2005/0248233 (2005-11-01), Pompei
patent: 11-262084 (1999-09-01), None
patent: 2000-028281 (2000-01-01), None
Translation of Sasaki et al. (JP Patent No. 11-262084).
Translation of Takahashi (JP Patent No. 2000-023281).

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