# US 2014/0191998 A1 · Non-contact control method of electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191998 A1 - Document ID: US20140191998A1 - Status: Published application - Kind: A1 - Application number: 14/148,739 - Filed: 2014-01-07 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Assignees: Eminent Electronic Technology Corp. Ltd. - Applicants: Eminent Electronic Technology Corp. Ltd. - Inventors: Cheng-Ta Chuang; De-Cheng Pan; Chih-Jen Fang - Web page: https://patentgrep.com/patent/US20140191998A1 ## 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: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A control method of an electronic apparatus includes the following steps: generating a plurality of detection signals to a non-contact object around the electronic apparatus; receiving a plurality of reflected signals reflected from the non-contact object in response to the detection signals, and accordingly generating a plurality of detection results; performing arithmetic operations upon the detection results to calculate motion information of the non-contact object around the electronic apparatus; recognizing a non-contact gesture corresponding to the non-contact object according to the motion information; and enabling the electronic apparatus to perform a specific function according to the non-contact gesture. ## Claims ### Claim 1 A control method of an electronic apparatus, comprising: generating a plurality of detection signals to a non-contact object around the electronic apparatus; receiving a plurality of reflected signals reflected from the non-contact object in response to the detection signals, and accordingly generating a plurality of detection results; performing arithmetic operations upon the detection results to calculate motion information of the non-contact object around the electronic apparatus; recognizing a non-contact gesture corresponding to the non-contact object according to the motion information; and enabling the electronic apparatus to perform a specific function according to the non-contact gesture. ### Claim 2 (depends on 1) The control method of claim 1, wherein a space surrounding the electronic apparatus corresponds to a predefined space coordinate system, and the step of performing the arithmetic operations upon the detection results to calculate the motion information of the non-contact object around the electronic apparatus comprises: performing the arithmetic operations upon the detection results to calculate a plurality of coordinates of the non-contact object corresponding to different points in time in the predefined space coordinate system for use as the motion information. ### Claim 3 (depends on 2) The control method of claim 2, wherein the electronic apparatus defines a reference surface in the predefined space coordinate system, and the step of performing the arithmetic operations upon the detection results to calculate the coordinates of the non-contact object corresponding to different points in time in the predefined space coordinate system for use as the motion information comprises: obtaining a plurality of sensing counts according to the detection results, and accordingly calculating a plurality of specific positions of the non-contact object corresponding to different points in time along a direction perpendicular to the reference surface, wherein the specific positions are used as the coordinates; and determining whether a difference between a first sensing count corresponding to the non-contact object at a first specific position and a second sensing count corresponding to the non-contact object at a second specific position is greater than a predetermined ratio of the first sensing count; wherein when it is determined that the difference is greater than the predetermined ratio of the first sensing count, the motion information further indicates that the non-contact object moves from the first specific position to the second specific position over a predetermined distance. ### Claim 4 (depends on 2) The control method of claim 2, wherein the step of recognizing the non-contact gesture corresponding to the non-contact object according to the motion information comprises: determining at least one of a direction of movement and a distance of the movement of the non-contact object in the predefined space coordinate system according to a relationship between the coordinates and time. ### Claim 5 (depends on 4) The control method of claim 4, wherein when it is determined that the non-contact object is stationary over a predetermined period of time, the non-contact gesture is a hold gesture. ### Claim 6 (depends on 5) The control method of claim 5, wherein the step of enabling the electronic apparatus to perform the specific function according to the non-contact gesture comprises: enabling the electronic apparatus to perform a focus function according to the hold gesture. ### Claim 7 (depends on 4) The control method of claim 4, wherein the electronic apparatus defines a reference surface in the predefined space coordinate system. ### Claim 8 (depends on 7) The control method of claim 7, wherein when it is determined that the non-contact object moves over a predetermined distance in a direction parallel to the reference surface, the non-contact gesture is a shift gesture. ### Claim 9 (depends on 8) The control method of claim 8, wherein the step of enabling the electronic apparatus to perform the specific function according to the non-contact gesture comprises: enabling the electronic apparatus to perform a page turning function according to the shift gesture. ### Claim 10 (depends on 7) The control method of claim 7, wherein when it is determined that the non-contact object moves over a predetermined distance in a vertical direction toward the reference surface, the non-contact gesture is an approaching gesture. ### Claim 11 (depends on 10) The control method of claim 10, wherein the step of enabling the electronic apparatus to perform the specific function according to the non-contact gesture comprises: enabling the electronic apparatus to perform a zoom-in function according to the approaching gesture. ### Claim 12 (depends on 7) The control method of claim 7, wherein when it is determined that the non-contact object moves over a predetermined distance in a vertical direction away from the reference surface, the non-contact gesture is a receding gesture. ### Claim 13 (depends on 12) The control method of claim 12, wherein the step of enabling the electronic apparatus to perform the specific function according to the non-contact gesture comprises: enabling the electronic apparatus to perform a zoom-out function according to the receding gesture. ### Claim 14 (depends on 7) The control method of claim 7, wherein when it is determined that the non-contact object moves over a first predetermined distance from a first specific position to a second specific position in a vertical direction toward the reference surface during a firs predetermined period of time, stays at the second specific position over a second predetermined period of time, and moves over a second predetermined distance from the second specific position in a direction parallel to the reference surface during a third predetermined period of time after staying at the second specific position, the non-contact gesture is a drag gesture. ### Claim 15 (depends on 7) The control method of claim 7, wherein when it is determined that the non-contact object moves over a first predetermined distance from a specific position in a vertical direction toward the reference surface and moves over a second predetermined distance in a vertical direction away from the reference surface in sequence during a predetermined period of time, the non-contact gesture is a single tap gesture. ### Claim 16 (depends on 15) The control method of claim 15, wherein the first predetermined distance is greater than the second predetermined distance. ### Claim 17 (depends on 15) The control method of claim 15, wherein the step of enabling the electronic apparatus to perform the specific function according to the non-contact gesture comprises: enabling the electronic apparatus to perform a picture taking function according to the single tap gesture. ### Claim 18 (depends on 7) The control method of claim 7, wherein when it is determined that the non-contact object moves over a first predetermined distance from a specific position in a vertical direction toward the reference surface, moves over a second predetermined distance in a vertical direction away from the reference surface, moves over a third predetermined distance in the vertical direction toward the reference surface, and moves over a fourth predetermined distance in the vertical direction away from the reference surface in sequence during a predetermined period of time, the non-contact gesture is a double tap gesture. ### Claim 19 (depends on 18) The control method of claim 18, wherein the step of enabling the electronic apparatus to perform the specific function according to the non-contact gesture comprises: enabling the electronic apparatus to perform a page-turning stopping function according to the double tap gesture. ### Claim 20 (depends on 7) The control method of claim 7, wherein the reference surface is a display screen or a touch panel of the electronic apparatus. ### Claim 21 (depends on 1) The control method of claim 1, wherein when the non-contact gesture is a combination gesture formed by a single tap gesture, a shift gesture and a hold gesture, the specific function performed by the electronic apparatus is to select a specific range, or select and copy the specific range.