# US 2015/0177832 A1 · Electronic Device, Display Control Method, and Recording Medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0177832 A1 - Document ID: US20150177832A1 - Status: Published application - Kind: A1 - Application number: 14/577,447 - Filed: 2014-12-19 - Published: 2015-06-25 - Earliest claimed: 2013-12-20 - Assignees: Casio Computer Co., Ltd. - Applicants: Casio Computer Co., Ltd. - Inventors: Kazunori Kita - Web page: https://patentgrep.com/patent/US20150177832A1 ## CPC - G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)} - G04G 21/00: Input or output devices integrated in time-pieces - G04G 21/025: {for measuring physiological data} - G04G 21/04: using radio waves (radio-controlled time-pieces G04R) - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G06F 3/147: using display panels - G09G 2354/00: Aspects of interface with display user - G09G 2380/02: Flexible displays - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G04G: ELECTRONIC TIME-PIECES - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract An electronic device includes: a display unit including a display area to display information; an eye position estimation unit configured to estimate at least one of eye positions of a user of the electronic device; a line of sight direction calculation unit configured to calculate a line of sight direction of the user with respect to the electronic device based on the eye position estimated by the eye position estimation unit; and a display control unit configured to change a display position of information on the display area of the display unit based on a change of the line of sight direction calculated by the line of sight direction calculation unit and display the information. ## Claims ### Claim 1 An electronic device comprising: a display unit including a display area to display information; an eye position estimation unit configured to estimate at least one of eye positions of a user of the electronic device; a line of sight direction calculation unit configured to calculate a line of sight direction of the user with respect to the electronic device based on the eye position estimated by the eye position estimation unit; and a display control unit configured to change a display position of information on the display area of the display unit based on a change of the line of sight direction calculated by the line of sight direction calculation unit and display the information. ### Claim 2 (depends on 1) The electronic device according to claim 1, further comprising: an acceleration rate detection unit configured to detect an acceleration rate; and a posture position detection unit configured to detect a posture of the electronic device and a relative position of the electronic device with respect to the eye position, wherein the eye position estimation unit estimates the user's eye position based on a detection result of the acceleration rate detection unit, and the line of sight direction calculation unit calculates the line of sight direction with respect to the electronic device based on the eye position estimated by the eye position estimation unit and the posture and the relative position detected by the posture position detection unit. ### Claim 3 (depends on 1) The electronic device according to claim 1, further comprising an imaging unit configured to image a user of the electronic device, wherein the eye position estimation unit estimates an eye position of the user by detecting an eye position on a face of the user based on the image imaged by the imaging unit, and the line of sight direction calculation unit calculates the line of sight direction with respect to the device based on the eye position and an arrangement position of the imaging unit. ### Claim 4 (depends on 1) The electronic device according to claim 1, wherein the electronic device is a type of device to be worn around an arm, and when the device is worn around the arm, the display area is arranged all around or more than halfway around the arm of the user. ### Claim 5 A display control method for an electronic device, comprising steps of: estimating an eye position, in which at least one of eye positions of a user of the electronic device is estimated; calculating a line of sight direction, in which a line of sight direction of the user with respect to the electronic device is calculated based on the eye position estimated by the eye position estimation unit; and controlling display, in which a display position of information on a display area of a display unit is changed based on a change of the line of sight direction calculated by the line of sight direction calculation unit and the information is displayed. ### Claim 6 A non-transitory computer-readable recording medium storing a program that causes a computer, the computer being configured to control an electronic device including a display unit having a display area to display information, to execute: an eye position estimating function in which at least one of eye positions of a user of the electronic device is estimated; a line of sight direction calculating function in which a line of sight direction of the user with respect to the electronic device is calculated based on the eye position estimated by the eye position estimation unit; and a display control function in which a display position of information on the display area of the display unit is changed based on a change of the line of sight direction calculated by the line of sight direction calculation unit and the information is displayed.