WO2011055514A1 - Dispositif d'entrée - Google Patents

Dispositif d'entrée Download PDF

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Publication number
WO2011055514A1
WO2011055514A1 PCT/JP2010/006362 JP2010006362W WO2011055514A1 WO 2011055514 A1 WO2011055514 A1 WO 2011055514A1 JP 2010006362 W JP2010006362 W JP 2010006362W WO 2011055514 A1 WO2011055514 A1 WO 2011055514A1
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WO
WIPO (PCT)
Prior art keywords
magnetic detection
magnetic
input device
detection element
unit
Prior art date
Application number
PCT/JP2010/006362
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English (en)
Japanese (ja)
Inventor
井上　眞
Original Assignee
パナソニック株式会社
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 パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2011055514A1 publication Critical patent/WO2011055514A1/fr

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    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03549—Trackballs

Definitions

  • the present invention relates to a magnetic detection unit mainly used for operation of various electronic devices and an input device using the same.
  • FIG. 12 is a cross-sectional view of a conventional input device.
  • the operating body 1 is spherical and made of an insulating resin.
  • the magnet 2 has a substantially disk shape and is made of ferrite or the like.
  • a plurality of magnets 2 are embedded in the outer periphery of the operating body 1 at predetermined intervals.
  • the upper case 3 and the lower case 4 are made of a thin metal plate.
  • the operating body 1 is rotatably accommodated between the upper case 3 and the lower case 4, and the upper portion of the operating body 1 protrudes from the opening hole on the upper surface of the upper case 3.
  • a plurality of wiring patterns are formed on the upper and lower surfaces of the wiring board 5.
  • a plurality of (for example, four) magnetic detection elements 6 such as Hall elements are mounted in a lattice shape vertically and horizontally, and are arranged to face the operation body 1 with a predetermined gap.
  • a control unit 7 such as a microcomputer is formed on the upper surface of the wiring board 5.
  • the four magnetic detection elements 6 are connected to the control unit 7 through a wiring pattern to constitute an input device.
  • the input device configured as described above is mounted on an operation unit (not shown) of an electronic device such as a mobile phone or a personal computer with the upper portion of the operation body 1 protruding.
  • the control part 7 is electrically connected to the electronic circuit (not shown) of an electronic device via a connector, a lead wire (not shown), etc.
  • the plurality of magnets 2 embedded in the outer periphery of the operation body 1 also rotate.
  • the magnet 2 ⁇ / b> A first approaches the magnetic detection element 6, and then the magnet 2 ⁇ / b> B approaches the magnetic detection element 6.
  • the magnetism detection element 6 detects the magnetism of the several magnet 2 which approaches and leaves this alternation.
  • the control unit 7 outputs a predetermined pulse signal to the electronic circuit of the device. Then, the electronic circuit of the electronic device detects the rotation direction and the rotation angle of the operating body 1 from this pulse signal. As a result, the cursor on the menu displayed on the display unit of the device is moved to the left, for example.
  • the cursor displayed on the display unit is moved in the predetermined direction, and a menu can be selected.
  • Patent Document 1 is known as prior art document information related to the invention of this application.
  • the conventional input device can detect only a rough rotation angle. Further, when the number of the magnetic detection elements 6 is increased, in order to detect magnetism from a plurality of adjacent magnetic detection elements 6, an overlapping pulse signal is output to the electronic device side. As a result, the detection accuracy is lowered.
  • the present invention provides an input device capable of detecting a precise movement amount without erroneous detection.
  • An input device includes a detection unit in which a plurality of magnetic detection elements are arranged vertically and horizontally on a substrate, a movable operation body arranged on the detection unit, and held by the operation body.
  • a magnetic supply unit that supplies magnetism to the lower magnetic detection element, and a control unit that is connected to the magnetic detection element and calculates the amount of movement of the operating body from the output signals of a pair of adjacent magnetic detection elements.
  • FIG. 1 is a cross-sectional view of an input device according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view of the input device according to Embodiment 1 of the present invention.
  • FIG. 3 is a block circuit diagram of the magnetic detection unit of the input device according to Embodiment 1 of the present invention.
  • FIG. 4A is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 4B is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 4A is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 4B is a plan view for explaining an example of the relationship between the arrangement of the magnetic
  • FIG. 5 is a schematic diagram for explaining the arrangement of the operating body and the magnetic detection unit in the input device according to Embodiment 1 of the present invention.
  • FIG. 6A is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 6B is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 6C is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 6A is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • FIG. 6B is a plan view for explaining an example of the relationship between the arrangement of the magnetic detection
  • FIG. 7A is a waveform diagram showing an example of a voltage signal output at the position of FIG. 6A.
  • FIG. 7B is a waveform diagram showing an example of a voltage signal output at the position of FIG. 6B.
  • FIG. 7C is a waveform diagram showing an example of a voltage signal output at the position of FIG. 6C.
  • FIG. 8A is a waveform diagram for explaining an example of a voltage signal output calculation method of the input device according to Embodiment 1 of the present invention.
  • FIG. 8B is a waveform diagram for explaining an example of a calculation method of the voltage signal output of the input device according to Embodiment 1 of the present invention.
  • FIG. 8A is a waveform diagram for explaining an example of a voltage signal output calculation method of the input device according to Embodiment 1 of the present invention.
  • FIG. 8B is a waveform diagram for explaining an example of a calculation method of the voltage signal output of the input device according to Embodiment 1 of the present invention.
  • FIG. 8C is a waveform diagram for explaining an example of a calculation method of the voltage signal output of the input device according to Embodiment 1 of the present invention.
  • FIG. 9 is a schematic diagram for explaining a calculation method of the voltage signal output of the input device according to the first embodiment of the present invention.
  • FIG. 10A is a schematic diagram for explaining a calculation method of the voltage signal output of the input device according to the first embodiment of the present invention.
  • FIG. 10B is a schematic diagram for explaining a calculation method of the voltage signal output of the input device according to the first embodiment of the present invention.
  • FIG. 10C is a schematic diagram for explaining a calculation method of the voltage signal output of the input device according to the first embodiment of the present invention.
  • FIG. 11 is a flowchart for explaining a calculation method of the voltage signal output of the input device according to the first embodiment of the present invention.
  • FIG. 12 is a cross-sectional view of a conventional input device.
  • Embodiment 1 of the present invention will be described in order with reference to FIGS.
  • FIG. 1 is a cross-sectional view of an input device according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view of the input device according to Embodiment 1 of the present invention.
  • the operation body 11 is spherical and made of an insulating resin such as ABS, polycarbonate, or urethane.
  • a magnetic supply unit 12 made of a magnetic material such as permalloy, iron, or Ni—Fe alloy is embedded in the operation body 11. Magnetism from the magnet 20 provided outside passes through the magnetic supply unit 12 and supplies magnetism to the magnetic detection unit 21 disposed below the operation body 11.
  • the magnetic supply unit 12 includes a substantially spherical core portion 13 and a plurality of (for example, 24) cylindrical projection portions 14 each having a plurality of radial protrusions projecting radially from the core portion 13 toward the outer periphery at a predetermined interval. It is configured.
  • the external magnet 20 may be eliminated and the magnetic supply unit 12 may be a magnet.
  • the upper case 15 and the lower case 16 are made of a thin metal plate such as steel.
  • the operating body 11 is rotatably accommodated between the upper case 15 and the lower case 16, and the upper portion of the operating body 11 protrudes from an opening hole provided on the upper surface of the upper case 15.
  • the cover 17 is substantially plate-shaped and made of rubber or elastomer.
  • the oscillator 18 is made of an insulating resin such as polybutylene terephthalate or polystyrene.
  • An upper case 15 and a lower case 16 that house the operating body 11 are placed on the upper surface of the rocking body 18 via a cover 17.
  • a plurality of wiring patterns are formed on the upper and lower surfaces of the film-like flexible substrate 19 using carbon, silver, copper foil, or the like. Further, on the upper surface of the flexible substrate 19 provided below the operation body 11, a magnet 20 made of ferrite, Nd—Fe—B alloy, etc. in a substantially cylindrical shape has an N pole upward and an S pole downward. It is placed in the direction.
  • a magnetic detection unit 21 for detecting magnetic flux is mounted on the upper surface of the flexible substrate 19 on the inner peripheral side of the magnet 20.
  • the magnetic detection unit 21 is disposed opposite to the operation body 11 with a predetermined gap.
  • a substantially U-shaped cutout 19 ⁇ / b> A is formed in the flexible substrate 19 around the magnetic detection unit 21.
  • the switch contact 22 made of a push switch or the like is mounted on the right side of the upper surface of the flexible board 19 and is disposed below the operation body 11. Further, the lower surface of the pressing portion 18A at the right end of the rocking body 18 is in contact with the upper surface of the push button portion 22A protruding upward.
  • the frame body 23 is made of a thin metal plate such as steel or copper alloy.
  • the frame body 23 is fixed to the upper case 15, and the operating body 11, the swinging body 18 and the like housed in the lower case 16 are held at predetermined positions.
  • a substantially U-shaped cutout 23 ⁇ / b> A is formed in the frame body 23 around the magnetic detection unit 21. Is elastically in contact with the lower surface of the lower case 16.
  • the lower surface of the fulcrum portion 18B provided at the left end of the oscillating body 18 is in contact with the upper surface of the wiring board 24 so as to be able to oscillate.
  • the control unit 25 configured with a microcomputer or the like is mounted on the upper surface of the flexible substrate 19. And the magnetic detection unit 21 and the switch contact 22 are connected to this control part 25 via a wiring pattern, and the input device is comprised.
  • FIG. 3 is a block circuit diagram of the magnetic detection unit of the input device according to Embodiment 1 of the present invention.
  • the magnetic detection element 26 is made of a Hall element or the like that detects magnetism in the vertical direction or horizontal direction.
  • the detection unit 27 is formed by arranging nine or more, for example, sixteen magnetic detection elements 26 in FIG.
  • a plurality of magnetic detection elements 26 are connected to an amplification unit 28 formed of FET or the like. Further, these are covered with an insulating resin such as epoxy, and are integrally molded in a resin mold to constitute the magnetic detection unit 21.
  • FIG. 4A and 4B are plan views for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • the interval between the 16 magnetic detection elements 26 of the magnetic detection unit 21 arranged to face the operation body 11 and the 24 protrusions 14 of the magnetic supply unit 12 embedded in the operation body 11. Think about the interval.
  • the interval is 16 when the four protrusions 14 face each other or when the three protrusions 14 face each other as shown in FIG. 4B.
  • Any one of the magnetic detection elements 26 is provided so as to detect the magnetism of each protrusion 14. That is, when the operating body 11 is rotated in any direction, up, down, left, or right, the four or three protrusions 14 that protrude downward are always provided to the 16 magnetic detection elements 26 of the magnetic detection unit 21. It is formed at an interval so as to face either one with a predetermined gap.
  • the input device configured as described above is mounted on an operation unit (not shown) of an electronic device such as a mobile phone or a personal computer with the upper portion of the operation body 11 protruding.
  • the control part 25 is electrically connected to the electronic circuit (not shown) of an electronic device via a connector, a lead wire (not shown), etc.
  • FIG. 5 is a schematic diagram for explaining the arrangement of the operating body and the magnetic detection unit in the input device according to Embodiment 1 of the present invention.
  • 6A to 6C are plan views for explaining an example of the relationship between the arrangement of the magnetic detection elements and the protrusions in the input device according to Embodiment 1 of the present invention.
  • 7A to 7C are waveform diagrams showing examples of voltage signal outputs at the positions shown in FIGS. 6A to 6C.
  • 8A to 8C are waveform diagrams for explaining an example of a voltage signal output calculation method of the input device according to Embodiment 1 of the present invention.
  • the magnetic supply unit 12 embedded in the operation body 11 when the upper part of the operation body 11 is rotated up and down and left and right with a finger, the magnetic supply unit 12 embedded in the operation body 11 also rotates.
  • the protrusion 14 ⁇ / b> A of the magnetic supply unit 12 when the operating body 11 is rotated leftward, the protrusion 14 ⁇ / b> A of the magnetic supply unit 12 is magnetic at the left end of the magnetic detection unit 21. It approaches the detection element 26A.
  • the magnetism of the substantially cylindrical magnet 20 arranged on the outer periphery of the magnetic detection unit 21 is from the protrusion 14B closest to the magnet 20 through the magnetic supply path of the core 13 and the protrusion 14A. It is supplied to the detection element 26A.
  • the magnetic detection element 26A detects the supplied magnetism and outputs a voltage signal.
  • the protrusion 14A approaches the magnetic detection element 26B. As shown in FIG. 6B, when the protrusion 14A reaches an intermediate movement amount between the magnetic detection elements 26A and 26B, the magnetism from the protrusion 14A is detected from both the magnetic detection elements 26A and 26B. .
  • the magnetic detection elements 26B and 26C detect the magnetism from the protrusion 14A.
  • the magnetic detection element 26B outputs a voltage signal LB as shown in FIG. 7B
  • the magnetic detection element 26C outputs a voltage signal LC shown in FIG. 7C.
  • pulse signals NA to NC having phase differences as shown in the waveform diagrams of FIGS. 25 to the electronic circuit of the device. Then, the movement amount of the protrusion 14A is detected based on the pulse signal of the magnetic detection element pair composed of two predetermined magnetic detection elements and the phase difference thereof.
  • the movement amount of the protrusion 14A can be determined.
  • the value is assumed to be a positive change “+1”, and the integrated value is used as an output of the movement amount of the cursor of this configuration.
  • 8A and 8B are set to a negative change “ ⁇ 1”.
  • the movement amounts of the plurality of protrusions of the operating body 11 are detected, and the cursor on the menu displayed on the display unit of the device is moved, for example, in the left direction by the movement amount.
  • FIGS. 9 to 10C are schematic diagrams for explaining a calculation method of the voltage signal output of the input device according to Embodiment 1 of the present invention.
  • description will be made by defining eight magnetic detection element pairs in the X direction with respect to 16 magnetic detection elements.
  • the Y-direction is actually configured in the same manner, but the description is simplified because of the same principle.
  • FIG. 9 eight pairs (26-a1) to (26-a4) and (26-b1) to (26-b4) are defined as magnetic detection element pairs for detecting the phase difference in the X direction.
  • the phase difference between the output signals output from the two magnetic detection elements 26 in the magnetic detection element pair (26-a2) is calculated and moved. Let the quantity signal be +1 count. Further, as the operating body 11 rotates, the same calculation is performed for the next magnetic detection element pair (26-b2), and +1 is counted.
  • the total movement amount of the operating body 11 is obtained by integrating the outputs (movement amount signals) from the plurality of magnetic detection element pairs. In this case, +2 is counted.
  • a movement amount signal is output only from one row of the magnetic detection element pairs (26-a2) and (26-b2) with respect to the movement direction of the protrusion 14A accompanying the rotation of the operating body 11.
  • a movement amount signal may be output from a plurality of magnetic detection element pairs depending on the arrangement of the protrusion 14A and these magnetic detection element pairs.
  • a movement amount signal is output from two magnetic detection element pairs (26-a1) and (26-a2) arranged in parallel to the movement direction of the protrusion 14A as indicated by the arrow 8.
  • a movement amount signal is output from the magnetic detection element pairs (26-a1) and (26-a4) at both ends across the magnetic detection element pairs (26-a2) and (26-a3).
  • the group of magnetic detection element pairs has been described as the Xa group consisting of (26-a1), (26-a2), (26-a3), and (26-a4).
  • a magnetic detection element parallel to the movement direction of the protrusion 14A may be used as the magnetic detection element pair.
  • the protrusion 14A moves at an angle of 45 degrees as shown by the arrow 9 in FIG. 10A, the left side of (26-a3) parallel to the arrow 9 as the magnetic detection element pair, and (26-a2)
  • the right magnetic detection element 26 may be considered as a magnetic detection element pair.
  • the operation is actually performed more than the movement amount of the width of Xa.
  • the detection is smaller than the actual movement amount. Therefore, when detecting three consecutive times in the same region, the movement amount is detected without canceling the third time.
  • FIG. 11 is a flowchart for explaining a calculation method of the voltage signal output of the input device according to the first embodiment of the present invention.
  • the present description is limited to the X direction, but corresponding to detection of a two-dimensional (planar) movement amount is performed in the Y direction in the same manner.
  • the protrusion 14A of the operating body 11 passes between the magnetic detection element pairs (26-a1) and (26-a2), and the protrusion 14B is connected to the magnetic detection element pair (26 -A4)
  • a description will be given assuming that the vehicle passes above.
  • the cancellation record is cleared as the movement amount addition + 1 in the route from step S1 to steps S2, S3, and S8.
  • the magnetic detection element pairs (26-a1), (26-a2), (26-a3), and (26-a4) at this time are collectively referred to as an Xa column.
  • step S7 when the movement amount displacement of the magnetic detection element pair (26-a2) occurs, there is no previous cancel record in the path from step S1 to steps S2, S3, and S4. Therefore, only the cancel recording is performed through step S7, and the movement amount is not added even if there is a movement amount displacement.
  • the rotation in the diagonal direction can be realized by combining the movement amount signals in the X and Y directions.
  • the swinging body 18 swings with the fulcrum portion 18B contacting the upper surface of the wiring board 24 as a fulcrum. Then, the lower surface of the rightmost pressing portion 18A presses the push button portion 22A, and the switch contact 22 is electrically connected / disconnected. As a result, the control unit 25 detects this electrical contact / separation, and a predetermined signal is output to the electronic circuit, for example, confirmation of a menu or display of the next menu is performed.
  • the cursor displayed on the display unit is moved in the predetermined direction to select a menu. Then, by pressing the operating body 11, the menu can be confirmed, the next menu can be displayed, and the like.
  • 9 or more (for example, 16) magnetic detection elements 26 are arranged vertically and horizontally to form the detection unit 27 of the magnetic detection unit 21. Then, the operating body 11 in which the magnetic supply unit 12 is embedded in the magnetic detection unit 21 is arranged opposite to each other with a predetermined gap therebetween to constitute an input device.
  • a magnetic detection element pair for example, magnetic detection elements 26A and 26B, magnetic detection elements 26C and 26D
  • 16 magnetic detection elements 26 arranged vertically and horizontally is considered.
  • the rotation direction and the movement amount of the operating body 11 are detected from the pulse signals having a phase difference between the adjacent magnetic detection elements 26 constituting the magnetic detection element pair. By such an operation, it is possible to detect a precise rotation angle with little error.
  • the input device according to the present invention has an advantageous effect that it can realize a device capable of detecting a precise movement amount without erroneous detection, and is mainly useful for operation of various electronic devices.

Abstract

L'invention porte sur un dispositif d'entrée qui comprend une unité de détection comprenant une pluralité d'éléments de détection magnétiques agencés en dessus, en dessous, à gauche et à droite sur un substrat ; une unité de manipulation mobile placée sur l'unité de détection ; une unité d'alimentation en énergie magnétique qui est tenue par l'unité de manipulation et qui fournit de l'énergie magnétique aux éléments de détection magnétiques placés au-dessous ; et une unité de commande qui est connectée aux éléments de détection magnétiques et qui calcule le degré de déplacement de l'unité de manipulation à partir de signaux de sortie d'une paire adjacente d'éléments de détection magnétiques. Si le signal de sortie est délivré par une pluralité des éléments de détection magnétiques qui sont parallèles à la direction de déplacement de l'unité d'alimentation en énergie magnétique, le degré de déplacement de l'unité de manipulation est calculé à partir du signal de sortie le plus récent.
PCT/JP2010/006362 2009-11-06 2010-10-28 Dispositif d'entrée WO2011055514A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009254663 2009-11-06
JP2009-254663 2009-11-06

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WO2011055514A1 true WO2011055514A1 (fr) 2011-05-12

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009113243A1 (fr) * 2008-03-12 2009-09-17 パナソニック株式会社 Dispositif d'entrée

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009113243A1 (fr) * 2008-03-12 2009-09-17 パナソニック株式会社 Dispositif d'entrée

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