EP1214681A1 - Stylet de lecture - Google Patents

Stylet de lecture

Info

Publication number
EP1214681A1
EP1214681A1 EP00946658A EP00946658A EP1214681A1 EP 1214681 A1 EP1214681 A1 EP 1214681A1 EP 00946658 A EP00946658 A EP 00946658A EP 00946658 A EP00946658 A EP 00946658A EP 1214681 A1 EP1214681 A1 EP 1214681A1
Authority
EP
European Patent Office
Prior art keywords
light
reading
circuit board
printed circuit
diodes
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Withdrawn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
EP00946658A
Other languages
German (de)
English (en)
Inventor
Noroz Nader Akhlagi
Fredrik LÖNN
Peter Wittrup
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.)
Anoto Group AB
Original Assignee
C Technologies AB
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
Priority claimed from SE9902438A external-priority patent/SE516561C2/sv
Application filed by C Technologies AB filed Critical C Technologies AB
Publication of EP1214681A1 publication Critical patent/EP1214681A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/0035—User-machine interface; Control console
    • H04N1/00405—Output means
    • H04N1/00408—Display of information to the user, e.g. menus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02805—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a two-dimensional array
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/0282—Using a single or a few point light sources, e.g. a laser diode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/0301—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array using a bent optical path between the scanned line and the photodetector array, e.g. a folded optical path
    • H04N1/0303—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array using a bent optical path between the scanned line and the photodetector array, e.g. a folded optical path with the scanned line and the photodetector array lying in non-parallel planes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/107—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with manual scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02452—Arrangements for mounting or supporting elements within a scanning head
    • H04N2201/02454—Element mounted or supported
    • H04N2201/02456—Scanning element, e.g. CCD array, photodetector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02452—Arrangements for mounting or supporting elements within a scanning head
    • H04N2201/02454—Element mounted or supported
    • H04N2201/02462—Illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02452—Arrangements for mounting or supporting elements within a scanning head
    • H04N2201/02479—Mounting or supporting means

Definitions

  • the present invention relates to a reading pen for reading text, which has an elongate casing with a reading opening formed m one end thereof, a printed circuit board arranged inside the casing, light -emitting diodes arranged inside the reading opening and adapted to illuminate the text that is to be read, and a light-sensitive sensor arranged inside the reading opening and adapted to read the illuminated text.
  • a reading pen of the type described above is known from SE 9604008-4. It is also sold by the applicant under the trademark C-PEN.
  • the reading pen is intended for selective recording of text from, for instance, books.
  • the recorded text can be stored and edited m the pen. It can also be transmitted m a wireless manner to another computer .
  • the prior-art reading pen has, among other things, a casing, a light-sensitive sensor, a flexible card, a lens system, a printed circuit board and a reflector.
  • the casing which is made of a plastic material is designed as a pen with a narrowing end, m which a reading opening is formed, through which the text is read.
  • a display which shows the read text.
  • the flexible card is a soft and flexible card having a complicated shape. It supports the light-sensitive sensor and a plurality of, usually ten, light-emitting diodes which are uniformly distributed round an opening m the flexible card.
  • the flexible card is essentially arranged m the narrowing end of the casing.
  • the lens system which comprises a lens and a mirror, is placed on top of the light-sensitive sensor.
  • the light-sensitive sensor is arranged perpendicular to the reading opening, and the mirror m the lens system is adapted to reflect the imaged text at an angle of 90 degrees to the light -sensitive sensor.
  • the printed circuit board is a hard and essentially rectangular card, on which a plurality of components for processing the recorded information are arranged. It is arranged m the casing inside the narrowing end thereof.
  • the text When reading text, the text must be illuminated. This is carried out by means of the light-emitting diodes, which have a wavelength corresponding to that to which the light-sensitive sensor is most sensitive. This wavelength is between 500 and 700 nm and corresponds to read light . That part of the flexible card on which the light-emitting diodes are arranged is placed ust inside the reading opening so that the opening of the flexible card is positioned opposite to the reading opening. The light -emitting diodes are arranged to illuminate the text through the reading opening, and their light is uniformly reflected by means of the reflector which is placed round the reading opening.
  • the flexible card on which the light-sensitive sensor and the light -emitting diodes are arranged, is expensive to manufacture and also difficult and time-consuming to mount, since it must be mounted manually.
  • the object of the present invention therefore is to provide a sensor/light-emittmg-diode arrangement which is easier and less expensive to manufacture.
  • the invention concerns a reading pen for reading text, which has an elongate casing with a reading opening formed m one end thereof, a printed circuit board which is arranged m the casing, light- emittmg diodes arranged inside the reading opening and adapted to illuminate the text which is to be read and a light -sensitive sensor arranged inside the reading opening and adapted to read the illuminated text, the printed circuit board having an end portion at said one end of the casing, said end portion essentially corresponding to the form of the casing, and the light-emitting diodes and the light -sensitive sensor being arranged on said end portion.
  • the light-emitting diodes are mounted on the flexible card, which is expensive and complicated to mount.
  • the light-emitting diodes are mounted on the printed circuit board. This is made possible by an extension of the hard printed circuit board m one end of the cas- mg. In this way, the expensive flexible card can be omitted.
  • the hard printed circuit board has a higher thermal conductivity then the flexible card. This means that the heat emitted by the light -emitting diodes is better and more efficiently removed.
  • a reflector is arranged m the reading opening to reflect and diffusely spread the light emitted by the light-emitting diodes.
  • the senor obtains a uniform light and no extra software need be implemented to compensate for a non- uniform luminous flux.
  • the reflector is white and reflects the light m a diffuse way. It is located on the mside of the casing from the position where the light -emitting diodes are located up to the opening.
  • the light-emitting diodes are placed on one large face of the printed circuit board and the light-sensitive sensor is placed on the other large face thereof. This yields a uniform and satisfactory illumination and makes the mounting of the light-emitting diodes and the sensor easier. Additionally it prevents the light emitted from the light-emitting diodes from directly reaching the sensor.
  • the light -emitting diodes are arranged on both large faces of the printed circuit board. This gives the mounting of the components of the printed circuit board a higher flexibility, since the light-emitt g diodes can be arranged where there is free space. Thus the light-emittmg diodes are provided with reflectors that direct the light outward.
  • a mirror is arranged to angle the ray path essentially 90 degrees to the surface of the sensor. By angling the ray path essentially 90 degrees a distortion of the reflected light (an image) is avoided. Additionally, use can be made of a plane mirror that is easy to manufacture.
  • the light-emitting diodes emit light parallel to the surface of the printed circuit board.
  • the light-emittmg diodes can be arranged directly on the printed circuit board. Accordingly, there is no need for an additional construction to arrange the light-emitt g diodes order to have them emit light through the reading opening of the reading pen.
  • Fig. 1 is a perspective view of a reading pen according to the invention.
  • Fig. 2 is a perspective view of one side of a print - ed circuit board.
  • Fig. 3 is a perspective view of the other side of the printed circuit board.
  • Fig. 4 is a longitudinal sectional view of a reading pen according to the invention. Description of a Preferred Embodiment
  • the reading pen shown m Fig. 1 has a casing 1 which is made of plastic and has a narrowing front end la.
  • a display 2 is arranged on the casing 1.
  • Figs 2 and 3 show one large face 6 of a printed cir- cuit board 5, on which large face four light-emittmg diodes 7a, 7b are arranged, and the other large face 8 thereof, on which a light-sensitive area sensor 9 is arranged.
  • the printed circuit board 5 is arranged mside the casmg 1, and its form essentially corresponds to the inner form of the casmg.
  • the printed circuit board 5 thus has a narrowing portion which mside the casing 1 extends to a position m the vicinity of the reading opening 3.
  • the four light-emittmg diodes 7a, 7b are arranged at the outer end of the narrowing portion of the printed circuit board 5.
  • the light-emittmg diodes 7a, 7b are juxtaposed and cover the width of the reading opening 3.
  • the two outer light-emittmg diodes 7a are positioned closer to the reading openmg 3 than the two central light-emittmg diodes 7b.
  • the light-emitt g diodes 7a, 7b are designed to radiate m parallel with the base on which they are placed and they preferably have built-in mirror, directing the light m said direction.
  • the light-sensitive area sensor 9 is also arranged on the narrowing portion of the printed circuit board 5.
  • Fig. 4 shows a longitudinal sectional view of the reading pen how the components are arranged mside the reading pen and the ray path 20 when reading text.
  • a lens system 10 comprising a lens arrangement 11 and a mirror 12 is arranged on the printed circuit board 5.
  • the text is registered by placing the reading opening 3 of the reading pen against the text .
  • the light-emittmg diodes 7a, 7b emit light towards the text that is to be registered.
  • the ray path 20 of the reflected light moves from the reading opening 3 to the lens arrangement 11 and further to the mirror 12, that angles the ray path 20 essentially perpendicular to the surface of the area sensor 9.
  • the reading pen can have an extent of uniform thickness, which means that the end la, m which the reading opening 3a is formed, does not narrow.

Abstract

L'invention porte sur un stylet de lecture de textes comportant: un boîtier allongé présentant à l'une de ses extrémités d'une ouverture de lecture (3), un circuit imprimé (5) placé dans le boîtier, des DELs (7a, 7b) disposé dans l'ouverture de lecture et conçues pour éclairer le texte à lire, et un détecteur photosensible (9) disposé dans l'ouverture de lecture et conçu pour lire le texte éclairé. L'une des extrémités du circuit imprimé (5), qui se trouve à ladite extrémité du boîtier et correspond sensiblement à sa forme, porte les DELs (7a, 7b) et le détecteur photosensible (9).
EP00946658A 1999-06-28 2000-06-28 Stylet de lecture Withdrawn EP1214681A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9902438 1999-06-28
SE9902438A SE516561C2 (sv) 1999-06-28 1999-06-28 Läspenna för inläsning och behandling av text
US14471499P 1999-07-20 1999-07-20
US144714P 1999-07-20
PCT/SE2000/001366 WO2001001332A1 (fr) 1999-06-28 2000-06-28 Stylet de lecture

Publications (1)

Publication Number Publication Date
EP1214681A1 true EP1214681A1 (fr) 2002-06-19

Family

ID=26663606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00946658A Withdrawn EP1214681A1 (fr) 1999-06-28 2000-06-28 Stylet de lecture

Country Status (3)

Country Link
EP (1) EP1214681A1 (fr)
AU (1) AU6038300A (fr)
WO (1) WO2001001332A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382879A (en) * 2001-12-06 2003-06-11 Hewlett Packard Co Image capture device with capture field illumination
CN107025808A (zh) * 2017-05-23 2017-08-08 昆山金品源精密电子有限公司 一种能防水的阅读笔

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947817A (en) * 1974-01-07 1976-03-30 Recognition Equipment Incorporated Hand operated optical character recognition wand
EP0858637B1 (fr) * 1995-10-27 2002-09-11 Licentia OY Dispositif d'analyse et d'interpretation et procede de lecture et d'interpretation de signes et caracteres
SE509327C2 (sv) * 1996-11-01 1999-01-11 C Technologies Ab Sätt och anordning för registrering av tecken med hjälp av en penna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0101332A1 *

Also Published As

Publication number Publication date
AU6038300A (en) 2001-01-31
WO2001001332A1 (fr) 2001-01-04

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