Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate
2007-10-09
2007-10-09
Le, Huyen (Department: 2615)
Electrical audio signal processing systems and devices
Having non-electrical feature
And loudspeaker
C381S306000, C381S388000
Reexamination Certificate
active
10506782
ABSTRACT:
An image display device has a main display body provided with a thin display unit, a low-frequency loudspeaker (woofer) and two middle and high frequency loudspeakers (tweeters) and a stand supporting the main display body. The stand has a base being just opposite at its top surface to a duct outlet of the woofer, thereby sound emitted from the duct can be constantly absorbed by and reflected from the base. A housing containing the first loudspeaker and a pair of the second loudspeakers has a plurality of through holes formed in a first area corresponding to an aperture of each loudspeaker and a plurality of blind holes formed in a second area surrounding the first area, wherein the second area for the first loudspeaker is different in peripheral shape and/or size from the second area for each of the second pair of loudspeakers.
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Microfilm of the Specification and drawings annexed to the request of Japanese Utility Model Application No. 177573/1980 (Laid-open No. 100392/1982) (Tokyo Shibaura Electric Co., Ltd.).
CD-ROM of the Specification and drawings annexed to the request of Japanese Utility Model Application No. 5196/1992 (Laid-open No. 65196/1993) (Mitsubishi Electric Corp.).
Microfilm of the Specification and drawings annexed to the request of Japanese Utility Model Application No. 44103/1990 (Laid-open No. 4493/1992) (Kenwood Corp.).
Ohtsuka Kohji
Tamura Ichiro
Le Huyen
Sharp Kabushiki Kaisha
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