# US 2020/0401271 A1 · Operation detection device and operation detection method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0401271 A1 - Document ID: US20200401271A1 - Status: Published application - Kind: A1 - Application number: 16/969,384 - Filed: 2019-02-05 - Published: 2020-12-24 - Earliest claimed: 2018-02-19 - Assignees: Murakami Corporation - Applicants: Murakami Corporation - Inventors: Takayoshi MOCHIZUKI - Web page: https://patentgrep.com/patent/US20200401271A1 ## CPC - G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)} - G06F 3/0425: {using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected (tracking a projected light spot to determine a position on a display surface G06F3/0386)} - G01B 11/22: for measuring depth - G01P 3/36: Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light (G01P3/68 takes precedence; gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams G01C19/64) - G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen} - G03H 1/2294: {Addressing the hologram to an active spatial light modulator} - G03H 2226/05: Means for tracking the observer - G06F 2203/04101: 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - G03H: HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements G02B5/32; producing stereoscopic or other three-dimensional effects G02B30/00; diffraction-grating systems G02B27/44; systems using moiré fringes G02B27/60; optical logic elements G02F3/00; stereo-photography G03B35/00; photosensitive materials or processes for photographic purposes G03C; {stereo-photographic or similar processes G03C9/00}; apparatus for processing exposed photographic materials G03D; analogue computers performing mathematical operations with the aid of optical elements G06E3/00; authentication by radiation, of concealed information carried by holograms or diffraction gratings G06K19/16; holographic storage G11B7/0065, G11C13/04; {stereoscopic or other three dimensional effects in television systems H04N13/00}) ## Abstract An operation detection device according to an embodiment includes: a display unit that displays an operation unit as a virtual image; a sensor that detects a position of an object approaching the operation unit; and a determination unit that determines whether or not the operation unit has been pressed based on the position of the object detected by the sensor. The determination unit determines that the operation unit has been pressed before the object reaches the operation unit. ## Claims ### Claim 1 An operation detection device, comprising: a display unit that displays an operation unit as a virtual image; a sensor that detects a position of an object approaching the operation unit; and a determination unit that determines whether or not the operation unit has been pressed based on the position of the object detected by the sensor, wherein the determination unit determines that the operation unit has been pressed before the object reaches the operation unit. ### Claim 2 (depends on 1) The operation detection device according to claim 1, wherein the determination unit determines that the operation unit has been pressed when the object reaches a pressing determination surface provided in front of the operation unit when viewed from the object. ### Claim 3 (depends on 1) The operation detection device according to claim 1, wherein the determination unit detects a speed of the object approaching the operation unit, and determines whether or not the operation unit has been pressed based on the detected speed and the position of the object. ### Claim 4 (depends on 1) The operation detection device according to claim 1, wherein the sensor is a depth sensor provided on a side opposite to the object with the operation unit interposed therebetween. ### Claim 5 An operation detection method, comprising: a step of detecting a position of an object approaching an operation unit displayed as a virtual image; and a step of determining that the operation unit has been pressed before the object reaches the operation unit.