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1. WO2000028348 - TRANSMITTER PEN LOCATION SYSTEM

Publication Number WO/2000/028348
Publication Date 18.05.2000
International Application No. PCT/US1999/023541
International Filing Date 08.10.1999
IPC
G01S 5/20 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
5Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations
18using ultrasonic, sonic, or infrasonic waves
20Position of source determined by a plurality of spaced direction-finders
G01S 5/30 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
5Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations
18using ultrasonic, sonic, or infrasonic waves
30Determining absolute distances from a plurality of spaced points of known location
G06F 3/033 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
033Pointing devices displaced or positioned by the user; Accessories therefor
CPC
G01S 5/20
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
5Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
18using ultrasonic, sonic, or infrasonic waves
20Position of source determined by a plurality of spaced direction-finders
G01S 5/30
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
5Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
18using ultrasonic, sonic, or infrasonic waves
30Determining absolute distances from a plurality of spaced points of known location
G06F 3/043
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
043using propagating acoustic waves
Applicants
  • ELECTRONICS FOR IMAGING, INC. [US]/[US]
Inventors
  • WOOD, Robert, P.
  • HAREL, Jacob
  • SAMSON HOU, Alfred
  • PLOTKIN, Serge
Agents
  • GLENN, Michael, A.
Priority Data
09/189,29910.11.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TRANSMITTER PEN LOCATION SYSTEM
(FR) SYSTEME DE POSITIONNEMENT D'UN STYLET EMETTEUR
Abstract
(EN)
A transmitter pen location system is provided, in which a pen is adapted to send a repeated output signal to external receivers at two or more receiver locations, wherein the location of the pointing tip of the pen is determined in relation to the writing surface of a whiteboard. In one embodiment an output element, preferably an ultrasonic transducer, transmits a time dependent output signal from a single signal transmitter pen to two or more external receivers at two or more receiver locations. The direction of arrival of the output signal to each of the receiver locations is determined, and the pointing tip of the single transmitter pen is then determined, as the intersection of direction vectors from the pen to the external receivers. In another embodiment, the transducer transmits a time dependent output signal from the transmitter pen to three or more external receivers, wherein the received signal is processed to determine the time of arrival to each of the receivers, and the location of the pointing tip of the pen is determined as the calculated distance between the receivers. In another alternate embodiment having a dual signal transmitter pen, a third receiver located at a receiver location is used to determine the time of arrival of a secondary output signal, to determine the distance between the dual signal transmitter pen and the receiver location, while two or more receivers at the receiver location are used to determine the direction of arrival of the primary time dependent output signal. Alternative embodiments allow the transmission of supplementary information from the transmitter pen to the receivers, using waveshaping of the output signal.
(FR)
L'invention concerne un système de positionnement d'un stylet émetteur dans lequel un stylet est adapté pour envoyer un signal de sortie répété vers des récepteurs extérieurs à deux ou plusieurs emplacements de réception, la position du pointeur du stylet étant déterminée en rapport avec la surface d'écriture d'un tableau blanc. Dans une forme de réalisation, un élément de sortie, de préférence un transducteur ultrasonore, transmet un signal de sortie temporel à partir d'un stylet émetteur de signal unique vers deux ou plusieurs récepteurs extérieurs situés à deux ou plusieurs emplacements de réception. La direction du point d'origine du signal de sortie vers chaque emplacement de réception est déterminée, et le pointeur du stylet émetteur unique est ensuite déterminé comme l'intersection de vecteurs de direction du stylet vers les récepteurs extérieurs. Dans une autre forme de réalisation, le transducteur transmet un signal de sortie temporel à partir d'un stylet émetteur vers trois ou plusieurs récepteurs extérieurs; le signal reçu est traité pour déterminer l'heure d'arrivée à chaque récepteur, et la position du pointeur du stylet est déterminé en tant que la distance calculée entre les récepteurs. Dans une forme de réalisation substitutive mettant en oeuvre un stylet émetteur de signal double, un troisième récepteur situé à un emplacement de récption est mis en oeuvre pour déterminer l'heure d'arrivée d'un signal de sortie secondaire, afin de déterminer la distance entre le stylet émetteur de signal double et l'emplacement du récepteur, tandis que deux ou plusieurs récepteurs à l'emplacement de réception sont utilisés pour déterminer la direction du point d'origine du signal de sortie temporel primaire. D'autres formes de réalisation autorisent la transmission d'informations supplémentaires du stylet émetteur vers les récepteurs, au moyen d'une mise en forme d'onde du signal de sortie.
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