EP1275017A1 - Multi-user retro reflector data input - Google Patents

Multi-user retro reflector data input

Info

Publication number
EP1275017A1
EP1275017A1 EP00919515A EP00919515A EP1275017A1 EP 1275017 A1 EP1275017 A1 EP 1275017A1 EP 00919515 A EP00919515 A EP 00919515A EP 00919515 A EP00919515 A EP 00919515A EP 1275017 A1 EP1275017 A1 EP 1275017A1
Authority
EP
European Patent Office
Prior art keywords
retro
sequent
imager
person
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00919515A
Other languages
German (de)
French (fr)
Other versions
EP1275017A4 (en
Inventor
Leonard Reiffel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1275017A1 publication Critical patent/EP1275017A1/en
Publication of EP1275017A4 publication Critical patent/EP1275017A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/0304—Detection arrangements using opto-electronic means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
    • G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet

Definitions

  • the invention uses retro-reflected light having a fixed component and a
  • FIG. 1 shows two users inputting data to an information system.
  • FIG. 2 shows light retro-reflected from a retro reflector in FIG. 1.
  • FIG. 3 shows light retro-reflected from a sequent retro reflector in FIG. 1.
  • FIG. 4 shows a retro reflector on a card.
  • FIG. 5 shows a finger acting as a retro reflector and retro reflector parts
  • the data input apparatus is used with an information system indicated by
  • the data input apparatus comprises an imager
  • the retro reflector is on the person in the example of FIG. 1, the
  • retro reflector can be connected to the person in various ways such as by being
  • the retro reflector Throughout use for data input, the retro reflector remains connected to the
  • Adjacent here means that the retro-reflected light is within the field of
  • beam incident on the imager can be made precisely coaxial by using beam
  • splitting devices and this also is included in the meaning of "adjacent" here.
  • Detect here means that the imager locates the retro reflected light
  • the retro-reflected light has a fixed component indicated for example by
  • FIG. 2 depicts retro-reflected light seen by the imager.
  • the retro-reflected light 41 in FIG. 2 which depicts retro-reflected light seen by the imager.
  • reflected light also has a variable component which is varied by the person.
  • variable component is indicated by the path 37 along
  • a second retro reflector part 35 being first positioned to be seen 45 by the unager and later being positioned to be not visible to the
  • variable component - A multiplicity of distinct variations of the variable component -
  • variable component meaning of a variable component is distinct from the case where a person moves
  • the imager When, in a time interval, the imager detects the variable component, the
  • imager inputs a signal to the information system.
  • variable component corresponds to
  • variable component is a start
  • the start configuration could be mapped by
  • the imager as a start signal causing the information system to start 51 a trace
  • the imager as a stop signal causing the information system to stop 52 the trace
  • Start and stop signals to start the trace and to stop the trace could also be
  • the information system need not visually display the trace, as the trace
  • the trace could be data used or stored by the information system.
  • the trace could be in
  • a second imager with light source could be used to help
  • the imager detects the fixed component, 41 for
  • the imager inputs an identity signal to the information system.
  • the imager inputs a sequent identity signal to the information
  • the fixed components 41 and 71 are distinct, and thus the sequent
  • identity signal is distinct from the identity signal.
  • the sequent retro-reflected light also has a sequent variable component
  • One example of the sequent variable component is
  • the imager and later being positioned to be not visible to the imager.
  • the imager inputs a sequent signal to the information system.
  • sequent signal comprises data identifying the series of positions along the
  • the sequent signal can cause the
  • variable component are varied by distinct persons and can be distinct.
  • An imager can distinguish retro-reflected light - 45 and 41 for example -
  • FIG. 1 the retro reflector is shown as a retro-reflecting disc attached to
  • Retro-reflecting objects can be attached to each of the fingers and to
  • embossments for example - produce very high signal to noise ratios and can be
  • a retro reflector on a card 87 which can be held by a person is depicted in
  • FIG. 4 A variable component is produced when the person obscures - with
  • fixed component comprises a set of retro-reflecting parts 85.
  • a retro reflector can be attached to a persons gear - head gear for example
  • An information system can attach an identifying label to
  • selected traces can be displayed and can be color coded. Paths of players in a
  • a retro reflector can be attached to a first aircraft transporting a person so
  • FIG. 5 for example - can be used in place of the retro reflector 31 though a
  • a fixed component - such as the retro-reflecting stripes 85A around a
  • the signal to noise ratio provided by a retro reflector can be increased.
  • a retro reflector can reflect a first electromagnetic radiation
  • the imager can be more sensitive to the first electromagnetic radiation
  • the light source can be modulated at a first frequency and the imager
  • a scanner can be added.
  • the scanner can be an imager scanner scanning
  • the imager over a light source illuminated can be a light scanner scanning the
  • generate inputted data can be incorporated in the imager itself so that the imager
  • the information system is part of the imager while it is
  • Variations of the variable component - such as range and speed of motion
  • the apparatus can be utilized interactively. For example, in response to a
  • information system can communicate to each of the persons a person specific path from the location of each of the persons to a part of the territory sought by
  • the data processor can locate the retro reflector relative to a target object.
  • the target object position can be determined by another retro reflector data input
  • the target object could be a game animal and this would enable
  • the target object could be another person and this
  • the fixed component the variable component, the identity signal, and the signal

Abstract

The apparatus uses retro-reflected light, having a fixed component (41) and a variable component (37) varied by a person, from a retro reflector (31) connected to a person to input data (37A) to an information system (13) and does this for each of several persons in the same time interval.

Description

TITLE
Multi-user Retro Reflector Data Input
BACKGROUND
The invention uses retro-reflected light having a fixed component and a
variable component varied by a person, from a retro reflector connected to a
person to input data to an mformation system and does this for each of several
persons in the same time interval.
Limits of data input via retro-reflected light - for example by Honey in U.
S. Patent 5,912,700 and by Stuart in U. S. Patent 4,998,441 - are surmounted by
the discovery shown here.
SUMMARY
Light retro-reflected by a retro reflector connected to a person has a fixed
component and a variable component and is detected by an imager which inputs
data to an mformation system.
Other forms and objects of the invention will be comprehended in the
drawings and description, which will make further equivalent forms and objects
obvious hereafter to persons skilled in the art. DRAWINGS
FIG. 1 shows two users inputting data to an information system.
FIG. 2 shows light retro-reflected from a retro reflector in FIG. 1.
FIG. 3 shows light retro-reflected from a sequent retro reflector in FIG. 1.
FIG. 4 shows a retro reflector on a card.
FIG. 5 shows a finger acting as a retro reflector and retro reflector parts
on a cylinder.
DESCRIPTION
The data input apparatus is used with an information system indicated by
the display device 13 in FIG. 1. The data input apparatus comprises an imager
indicated by a lens 11, a light source indicated by a ring light 12, and a retro
reflector indicated by a retro-reflecting disc 31 on a hand portion of a person.
Though the retro reflector is on the person in the example of FIG. 1, the
retro reflector can be connected to the person in various ways such as by being
held by the person, by being on gear worn by the person, or by being on a device
- such as an aircraft - transporting the person. The meaning of "connected to a
person" here is distinct from connection by a signal.
Throughout use for data input, the retro reflector remains connected to the
person. This is distinct from the case where retro-reflecting material is attached
to an object - such as a thrown ball - which moves independently of the person. Ideal retro-reflecting objects retro-reflect all incident light back coaxially
along the path of the incident light. Thus, an imager adjacent to the light source
will detect retro-reflected light - which is light from the light source retro-
reflected by the retro reflector to the imager - with a high signal to noise ratio
between the retro-reflected light and any other light detected by the imager. The
signal to noise ratio becomes greater and smaller as retro-reflecting objects are
more and less ideal.
"Adjacent" here means that the retro-reflected light is within the field of
view of the imager. A light beam from the source and the retro-reflected light
beam incident on the imager can be made precisely coaxial by using beam
splitting devices, and this also is included in the meaning of "adjacent" here.
"Detect" here means that the imager locates the retro reflected light
relative to the imager field of view - for example, as exposing specific pixels of
a charge coupled device.
The retro-reflected light has a fixed component indicated for example by
41 in FIG. 2 which depicts retro-reflected light seen by the imager. The retro-
reflected light also has a variable component which is varied by the person.
One example of the variable component is indicated by the path 37 along
which the person moves the retro reflector. Another example of the variable
component is indicated by a second retro reflector part 35 being first positioned to be seen 45 by the unager and later being positioned to be not visible to the
imager.
A multiplicity of distinct variations of the variable component -
comprising data - can be generated by the person varying positions of a retro
reflector and varying configurations of more than one retro reflector part. This
meaning of a variable component is distinct from the case where a person moves
a bar-coded object so that an imager can read the fixed bar code.
When, in a time interval, the imager detects the variable component, the
imager inputs a signal to the information system.
In the example depicted in FIG. 1 a variable component corresponds to
the series of positions making up the path 37, and the sequent signal comprises
data identifying the series of positions along the path 37 in the time interval.
Also in the example depicted in FIG. 1 a variable component is a start
configuration of the retro reflector 31 and the second retro reflector part 35 at
the start of the path and is a stop configuration with the second retro reflector
part obscured at the end of the path. The start configuration could be mapped by
the imager as a start signal causing the information system to start 51 a trace
37A corresponding to the path, and the stop configuration could be mapped by
the imager as a stop signal causing the information system to stop 52 the trace
corresponding to the path. Start and stop signals to start the trace and to stop the trace could also be
input by other means such as key strokes, mouse clicks, and speech.
The information system need not visually display the trace, as the trace
could be data used or stored by the information system. The trace could be in
three spatial dimensions, and in time, in data used or stored by the information
system. A second imager with light source, and more, could be used to help
generate three dimensional data. Also, a wand-like retro reflector with two distal
points separated by a known distance can be used to facilitate three dimensional
data.
When, in the time interval, the imager detects the fixed component, 41 for
example, the imager inputs an identity signal to the information system.
In the example depicted in FIG. 1 there is also a sequent retro reflector 61
connected to a sequent person, and there is sequent retro-reflected light with a
sequent fixed component 71 depicted in FIG. 3.
When, in the time interval, the imager detects the sequent fixed
component 71 the imager inputs a sequent identity signal to the information
system. The fixed components 41 and 71 are distinct, and thus the sequent
identity signal is distinct from the identity signal.
The sequent retro-reflected light also has a sequent variable component
varied by the sequent person. One example of the sequent variable component is
indicated by the path 67 along which the sequent person moves the sequent retro reflector 61. Another example of the sequent variable component is indicated by
a sequent second retro reflector part 65 being first positioned to be seen 75 by
the imager and later being positioned to be not visible to the imager.
When, in the time interval, the imager detects the sequent variable
component, the imager inputs a sequent signal to the information system.
In the example depicted in FIG. 1 a sequent variable component
corresponds to a series of positions making up the sequent path 67, and the
sequent signal comprises data identifying the series of positions along the
sequent path 67 in the time interval. The sequent signal can cause the
information to trace a path 67A.
The retro reflector and the sequent retro reflector function
interchangeably. The contents of the fixed component and the sequent fixed
component are distinct. The contents of the variable component and the sequent
variable component are varied by distinct persons and can be distinct.
An imager can distinguish retro-reflected light - 45 and 41 for example -
retro-reflected by a person from retro-reflected light - 75 and 71 for example -
retro-reflected by a sequent person because of the distinct fixed components and
because distances between retro-reflected light retro-reflected by one person - 45
and 41 for example - are smaller than distances between retro-reflected light
retro-reflected light not retro-reflected from by one person - 45 and 75 for
example. While 71 is shown to have bar code like configurations, other properties -
such as shape and color - can also be used alone and in combinations to
comprise fixed components.
In FIG. 1 the retro reflector is shown as a retro-reflecting disc attached to
finger tips. Retro-reflecting objects can be attached to each of the fingers and to
other portions of a hand such as knuckles and to other portions of the body.
Various commercial retro reflecting materials - utilizing micro spheres and
embossments for example - produce very high signal to noise ratios and can be
put on hand portions in various ways - such as with adhesive, with rings, and
with thimble-like devices .
A retro reflector on a card 87 which can be held by a person is depicted in
FIG. 4. A variable component is produced when the person obscures - with
fingers, for example - one or more of retro-reflecting parts 81, 82, and 83. A
fixed component comprises a set of retro-reflecting parts 85.
A retro reflector can be attached to a persons gear - head gear for example
- so that positions of the person can be imaged from above to identify the person
and trace the positions. An information system can attach an identifying label to
a displayed image of the person. When many persons are so imaged, only
selected traces can be displayed and can be color coded. Paths of players in a
sporting event can be traced. WO 01 II X 397 PCT/US00/07538
A retro reflector can be attached to a first aircraft transporting a person so
that a light source and imager on a second aircraft can detect the presence and
motion of the first aircraft.
In as much as a finger tip reflects light from the light source back to the
imager with a signal to noise ratio greater than one, the finger tip - 31 A depicted
in FIG. 5 for example - can be used in place of the retro reflector 31 though a
poor signal to noise ratio will burden the imager. While finger tip properties -
such as color - can provide the fixed component, this would further burden an
imager. A fixed component - such as the retro-reflecting stripes 85A around a
cylinder shown in FIG. 5 - burdens the imager less.
The signal to noise ratio provided by a retro reflector can be increased.
For example, a retro reflector can reflect a first electromagnetic radiation
spectrum portion greater than other electromagnetic radiation spectrum portions,
and the imager can be more sensitive to the first electromagnetic radiation
spectrum portion than to other electromagnetic radiation spectrum portions.
Also, the light source can be modulated at a first frequency and the imager
can be more sensitive to light modulated at the first frequency than to light
modulated at other frequencies. With a modulated light source the distance
between a retro reflector and the imager can be determined by time of flight
measurement. A scanner can be added. The scanner can be an imager scanner scanning
the imager over a light source illuminated; can be a light scanner scanning the
light source over an imager viewed solid angle; and can be a combined scanner
scanning the imager and the light source together over a solid angle.
Combinations of all the several signal to noise ratio improvement methods can
be used.
Information processing capacity needed to detect the retro reflectors and
generate inputted data can be incorporated in the imager itself so that the imager
can input data to the information system in forms similar to foπns provided by
keystrokes and mouse devices. Information processing capacity of the
information system can be used to detect retro reflectors and generate inputted
data, in which case the information system is part of the imager while it is
helping generate input data.
Variations of the variable component - such as range and speed of motion
and relative configurations and motions of retro reflector parts - can be defined
to execute members of a roster of signal components similarly to defining
keystroke combinations.
The apparatus can be utilized interactively. For example, in response to a
query communicated by the information system, a plurality of persons can input
responses. Also, for each of a plurality of persons navigating a territory, the
information system can communicate to each of the persons a person specific path from the location of each of the persons to a part of the territory sought by
each of the persons.
The data processor can locate the retro reflector relative to a target object.
The target object position can be determined by another retro reflector data input
apparatus. The target object could be a game animal and this would enable
realistic bloodless hunting. The target object could be another person and this
would enable bloodless combat training and sport.
Other equivalent forms for the imager, the light source, the retro reflector,
the fixed component, the variable component, the identity signal, and the signal;
and other equivalent ways of using a retro reflector to input data to an
information system will be obvious hereafter to persons skilled in the art.
Therefore this invention is not limited to the particular examples shown and
described here.

Claims

CLAIMSWhat is claimed is:
1. Data input apparatus used with an information system, the data input
apparatus comprising:
an imager;
a light source adjacent to the imager;
a retro reflector, the retro reflector being connected to a person;
retro-reflected light, the retro reflected light being light from the light
source which is retro-reflected by the retro reflector to the imager,
the retro-reflected light having a fixed component, and the retro-
reflected light having a variable component varied by the person;
an identity signal, the identity signal being input to the information
system by the imager when the fixed component is detected by the
imager in a time interval; and
a signal, the signal being input to the information system by the imager
when the variable component is detected by the imager in the time
interval.
2. The apparatus of claim 1 further comprising:
a sequent retro reflector, the sequent retro reflector being connected to a
sequent person;
sequent retro-reflected light, the sequent retro reflected light being light
from the light source which is retro-reflected by the sequent retro
reflector to the imager, the sequent retro-reflected light having a
sequent fixed component, and the sequent retro-reflected light
having a sequent variable component varied by the sequent person;
a sequent identity signal, the sequent identity signal being input to the
information system by the imager when the sequent fixed
component is detected by the imager in the time interval;
a sequent signal, the sequent signal being input to the information system
by the imager when the sequent variable component is detected by
the imager in the time interval.
3. The apparatus of claim 1 wherein the retro reflector reflects a first
electromagnetic radiation spectrum portion greater than other electromagnetic
radiation spectrum portions and the imager is more sensitive to the first
electromagnetic radiation spectrum portion than to the other electromagnetic
radiation spectrum portions.
4. The apparatus of claim 1 wherein the light source is modulated at a first
frequency and the imager is more sensitive to light modulated at the first
frequency than to light modulated at other frequencies.
5. The apparatus of claim 1 further comprising a scanner chosen from the
group consisting of:
an imager scanner scanning the imager over a light source illuminated
solid angle;
a light scanner scanning the light source over an imager viewed solid
angle; and
a combined scanner scanning the imager and the light source together
over a solid angle.
6. The apparatus of claim 1 wherein the retro reflector is on a hand
portion of the person.
7. The apparatus of claim 1 wherein the retro reflector is on an object held
by the person.
8. The apparatus of claim 1 wherein the retro reflector is on gear worn by
the person.
9. The apparatus of claim 1 wherein the retro reflector is on a vehicle
transporting the person.
10. Data input apparatus used with an information system, the data input
apparatus comprising:
an imager;
a light source adjacent to the imager;
a retro reflector, the retro reflector being connected to a person;
retro-reflected light, the retro reflected light being light from the light
source which is retro-reflected by the retro reflector to the imager,
the retro-reflected light having a fixed component, and the retro-
reflected light having a variable component varied by the person;
an identity signal, the identity signal being input to the information
system by the imager when the fixed component is detected by the
imager in a time interval;
a signal, the signal being input to the information system by the imager
when the variable component is detected by the imager in the time
interval;
a sequent retro reflector, the sequent retro reflector being connected to a
sequent person;
sequent retro-reflected light, the sequent retro reflected light being light
from the light source which is retro-reflected by the sequent retro
reflector to the imager, the sequent retro-reflected light having a sequent fixed component, and the sequent retro-reflected light
having a sequent variable component varied by the sequent person;
a sequent identity signal, the sequent identity signal being input to the
information system by the imager when the sequent fixed
component is detected by the imager in the time interval; and
a sequent signal, the sequent signal being input to the information system
by the imager when the sequent variable component is detected by
the imager in the time interval.
EP00919515A 2000-03-21 2000-03-21 Multi-user retro reflector data input Withdrawn EP1275017A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/007538 WO2001071397A1 (en) 2000-03-21 2000-03-21 Multi-user retro reflector data input

Publications (2)

Publication Number Publication Date
EP1275017A1 true EP1275017A1 (en) 2003-01-15
EP1275017A4 EP1275017A4 (en) 2008-01-23

Family

ID=21741177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00919515A Withdrawn EP1275017A4 (en) 2000-03-21 2000-03-21 Multi-user retro reflector data input

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EP (1) EP1275017A4 (en)
JP (1) JP2003528382A (en)
KR (1) KR20020092393A (en)
CN (1) CN1237354C (en)
AU (1) AU2000240189A1 (en)
BR (1) BR0017178A (en)
WO (1) WO2001071397A1 (en)

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Also Published As

Publication number Publication date
CN1451100A (en) 2003-10-22
WO2001071397A1 (en) 2001-09-27
EP1275017A4 (en) 2008-01-23
AU2000240189A1 (en) 2001-10-03
KR20020092393A (en) 2002-12-11
CN1237354C (en) 2006-01-18
JP2003528382A (en) 2003-09-24
BR0017178A (en) 2003-01-14

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