Reduced size radio selective call receiver with a tactile alert

Details Reduced size radio selective call receiver with a tactile alert Reduced size radio selective call receiver with a tactile alert

1995-04-19

1998-06-16

Powell, Mark R.

Communications: electrical

Continuously variable indicating

With meter reading

H04Q 130

Patent

active

057677875

ABSTRACT:
A radio selective call receiver that alerts a user to reception of a call signal by mechanical vibration achieves miniaturization and reduction in thickness by using a sounding body as a reception informing means. The sounding body is selected among reception informing means by a switch. The sounding body generates a non-audio frequency, thus preventing the mechanical vibration from producing an undesired sound. The bottom of the receiver is adapted to be in close contact with a human body wearing the receiver. When a call signal is received, the sounding body oscillates at the non-audio frequency, the sound wave passes through slits to cause vibration, and the user carrying the receiver is alerted tactilely that a call signal is being received.

REFERENCES:
patent: 3937004 (1976-02-01), Natori et al.
patent: 4383139 (1983-05-01), Kanchev
patent: 4419545 (1983-12-01), Kuindersma
patent: 5023504 (1991-06-01), Mooney et al.
patent: 5172092 (1992-12-01), Nguyen et al.
patent: 5181023 (1993-01-01), Fujii

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