Browse Prior Art Database

Rangefinder for Portable Personal Computers

IP.com Disclosure Number: IPCOM000105711D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Mosley, J: AUTHOR [+2]

Abstract

Disclosed is an acoustical rangefinder, operating according to the principles of sonar, attached to a PCMCIA card or to a small cartridge connected to the bus of a portable personal computer.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 56% of the total text.

Rangefinder for Portable Personal Computers

      Disclosed is an acoustical rangefinder, operating according to
the principles of sonar, attached to a PCMCIA card or to a small
cartridge connected to the bus of a portable personal computer.

      In the example of the drawing, a PCMCIA card 1 includes a
connector end 2 with a number of apertures 3, through which pins from
a mating connector in a computing system extend to make contact with
receptacles (not shown) in the card 1.  Physical dimensions and the
contact interface of this type of card have been standardized by the
PCMCIA industry association to provide a number of pluggable memory
and I/O adapter circuit configurations.

      To form the rangefinder feature, transducers for emitting a
sound, which may be an ultrasonic pulse, and for receiving an echo of
the sound, are mounted in a bulb-shaped structure 4 at an end of card
1 opposite connector end 2, which is inserted into a socket of a
portable personal computer.  Circuits within card 1 operate in
cooperation with circuits and program routines within the personal
computer and with the transduc ers in structure 4.  Distances are
calculated using the time required to receive an echo after a sound
is emitted.

      This device is particularly useful in applications where good
approximations of distances, rather than close measurements, are
needed.  In a first example of such an application, a carpet
installer, with the feature in a portable pe...