Call box with keyboard communication

Details Call box with keyboard communication Call box with keyboard communication

1995-04-11

1997-12-23

Kuntz, Curtis

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 45, 379 52, 379 37, 379155, 455 677, H04M 1104, H04M 1100, H04M 1700, H04B 1700

Patent

active

057013381

ABSTRACT:
A keyboard and attached interface for a conventional call box is disclosed. The interface constitutes an interrupt between the cellular telephone handset and cellular transceiver which is activated either by a conventional keypad "On" switch or in conjunction with the telephone hook switch. The TDD keyboard is contained within the call box behind its own discrete door where interference with conventional voice communication cannot occur. Upon opening of the keyboard door, the keyboard activates an interactive display which scrolls status messages to the user informing him of call status upon activation of the keyboard. Switching from voice to keyboard communication is enabled until the answering dispatch center interrogates the call box for identity and necessarily location. Assuming that keyboard communication is selected, necessary communication delay is accepted until communication with a TDD capable dispatcher is established. The keypad is of standard layout and is simply altered for rapid emergency communication including "Yes" and "No" questions typically asked pursuant to a conventional decision tree for rapid screening of the situation attendant the caller. Provision made to customize the interface to the cellular telephone environment include enabling transmission to continue despite line interruptions and providing a switched filter to enhance attached modem transmission. Call termination is dispatch center actuated. There is provided a simple TDD interface which is both a service to the hearing impaired as well as providing superior communication in high noise environments.

REFERENCES:
patent: 3749982 (1973-07-01), Derdzinski et al.
patent: 4503288 (1985-03-01), Kessler
patent: 4703161 (1987-10-01), McLean
patent: 4727538 (1988-02-01), Farrell
patent: 4783800 (1988-11-01), Levine
patent: 4788711 (1988-11-01), Nasco, Jr.
patent: 4817126 (1989-03-01), Hendershot
patent: 4903290 (1990-02-01), King
patent: 4903323 (1990-02-01), Hendershot
patent: 4974257 (1990-11-01), Ibanez
patent: 4991197 (1991-02-01), Morris
patent: 5148471 (1992-09-01), Metroka et al.
patent: 5155689 (1992-10-01), Wortham
patent: 5189632 (1993-02-01), Paajanen et al.
patent: 5272747 (1993-12-01), Meads
patent: 5297196 (1994-03-01), Yamada
patent: 5311175 (1994-05-01), Waldman
patent: 5325418 (1994-06-01), McGregor
patent: 5333177 (1994-07-01), Braitberg
patent: 5337343 (1994-08-01), Stickney
patent: 5365570 (1994-11-01), Boubelik
patent: 5377256 (1994-12-01), Franklin et al.
patent: 5450470 (1995-09-01), Alheim
patent: 5511234 (1996-04-01), Ha
patent: 5526411 (1996-06-01), Krieter
patent: 5598460 (1997-01-01), Tendler

Affiliated with

Also associated with

Rating

Call box with keyboard communication does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Call box with keyboard communication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Call box with keyboard communication will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1806527