Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1993-03-01
1995-04-25
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 58, 455 111, H04M 1100
Patent
active
054105870
ABSTRACT:
A car radiotelephone system having one or more wireless handsets communicating voice and control information via an ultrasonic link with a stationary unit connected functionally to a base station. The base unit (1) is connected by two cables, an audio-out cable (a) connected to the radio frequency receiver (2) and an audio-in cable (b) connected to the radio frequency transmitter (3), to a stationary transmitting/receiving unit (4). The stationary transmitting/receiving unit consists of two summing amplifiers, transmitting summing amplifier (5) and receiving summing amplifier (6), and any number of ultrasonic transmitters and receivers. Likewise, any number of handsets can be used. The handsets (15) comprise an ultrasonic receiver (19), an ultrasonic transmitter (20), transmitter and receiver circuitry (27), a keypad (28), display circuitry (29), microphone (30), earpiece/speaker (31), and a rechargeable battery and ringer. Each ultrasonic transmitter in the stationary unit and the handsets operate at a different frequency or other independent non-interfering methods so as to permit full duplex transmission. In order to insure that the transmission is obstacle free, the ultrasonic receiving and transmitting units in a handset are mounted on the top most side of the handset, pointing upward, and the stationary transmitting/receiving unit (4) is preferably mounted in the dome light housing unit (32).
REFERENCES:
patent: 4291411 (1981-09-01), Muller et al.
patent: 4396799 (1983-08-01), Franzen et al.
patent: 4542262 (1985-09-01), Ruff
patent: 4850006 (1989-07-01), Sasaki et al.
patent: 4860337 (1989-08-01), Shimura
patent: 4969180 (1990-11-01), Watterson et al.
World Publication, WO92/10046, "Light-Linked Cellular Telephone" Jun. 1992, Barker et al.
Bost Dwayne D.
Kuntz Curtis
Matsushita Communication Industrial Corp. of America
LandOfFree
Ultrasonic radiotelephone for an automobile does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic radiotelephone for an automobile, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic radiotelephone for an automobile will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1573402