Telephonic communications – Telephone line or system combined with diverse electrical... – Remote control
Patent
1995-07-10
1999-04-06
Woo, Stella
Telephonic communications
Telephone line or system combined with diverse electrical...
Remote control
379373, 379418, H04M 1100
Patent
active
058928170
ABSTRACT:
A system for alerting some individuals in a large open space such as a store or restaurant to an incoming telephone call, but that avoids disturbing other individuals by loud ringing. Individuals carry miniature alerting units that are clipped to their clothing and that can also serve as identification badges. An incoming telephone call is received by a telephone ringer control which transmits a signal by a wireless medium to an alerting unit, which emits a low-level auditory (or vibratory or visual) signal to alert the user, and also transmits an acknowledgment signal by the same wireless medium back to the telephone ringer control. If such an acknowledgment signal is not received within a short time period at the telephone ringer control, a loud auditory ringing signal is broadcast. The acknowledgment signal--and resulting loud ring if it is not received--ensures that individuals will always be alerted to an incoming call, even if an individual forgets to carry an alerting unit or an alerting unit fails to operate because of an obstruction in the transmission path or a drained battery.
REFERENCES:
patent: 3439320 (1969-04-01), Ward
patent: 3657715 (1972-04-01), Curtin
patent: 3696384 (1972-10-01), Lester
patent: 3805265 (1974-04-01), Lester
patent: 4076968 (1978-02-01), Wattenbarger
patent: 4542262 (1985-09-01), Ruff
patent: 4794649 (1988-12-01), Fujiwara
patent: 4823123 (1989-04-01), Siwiak
patent: 4969180 (1990-11-01), Watterson et al.
patent: 5111499 (1992-05-01), Umemoto et al.
patent: 5140626 (1992-08-01), Ory et al.
patent: 5151930 (1992-09-01), Hagl
patent: 5222123 (1993-06-01), Brown et al.
patent: 5315636 (1994-05-01), Patel
patent: 5469496 (1995-11-01), Emery et al.
patent: 5515426 (1996-05-01), Yacenda et al.
patent: 5673308 (1997-09-01), Akhavan
LandOfFree
Wireless system for alerting individual to incoming telephone ca does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wireless system for alerting individual to incoming telephone ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wireless system for alerting individual to incoming telephone ca will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1378363