# US 2013/0157726 A1 · Mobile information device, control method, and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157726 A1 - Document ID: US20130157726A1 - Status: Published application - Kind: A1 - Application number: 13/818,618 - Filed: 2011-08-25 - Published: 2013-06-20 - Earliest claimed: 2010-08-25 - Assignees: KYOCERA Corporation - Inventors: Kazuto Miyazaki; Ichiro Kajitani - Web page: https://patentgrep.com/patent/US20130157726A1 ## CPC - G06F 1/3231: Monitoring the presence, absence or movement of users - G06F 3/0443: {using a single layer of sensing electrodes} - H04M 1/23: Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof (by improving visibility H04M1/22) - H04M 1/724: User interfaces specially adapted for cordless or mobile telephones - H04M 1/72454: according to context-related or environment-related conditions - H04M 2250/12: including a sensor for measuring a physical value, e.g. temperature or motion - H04M 2250/22: including a touch pad, a touch sensor or a touch detector - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Provided is a mobile information device which can prevent erroneous inputs in situations where conventional mobile information devices cannot prevent erroneous inputs. Two proximity sensors 110 are provided on a front surface 102 of a mobile information device 100. The two proximity sensors 110 are separated from one another by a distance equivalent to at least one key 105, and are each adjacent to at least one of the keys 105. The mobile information device 100 blocks execution of processing in response to key operations when both of the proximity sensors 110 detect a state of proximity of a sensing target, such as a human body. As a result, erroneous inputs on the keys 105 caused by contact with hands or face can be prevented. ## Claims ### Claim 1 A mobile information device comprising: a housing; a plurality of keys disposed on one surface of the housing; a control unit configured to execute processing in response to a touch operation performed on at least one of the keys; and N proximity sensors (N≧2) disposed on the surface of the housing, and each configured to detect a proximity state of a sensing target, wherein when at least two predetermined proximity sensors among the N proximity sensors detect the proximity state, the control unit blocks the processing in response to the touch operation on the at least one of the keys. ### Claim 2 (depends on 1) The mobile information device in claim 1, wherein the at least two predetermined proximity sensors are separated from one another by a distance equivalent to at least one key, and are each adjacent to at least one of the keys. ### Claim 3 (depends on 2) The mobile information device in claim 2, wherein the at least two predetermined proximity sensors include two proximity sensors that sandwich at least one of the keys therebetween. ### Claim 4 (depends on 3) The mobile information device in claim 3, wherein the two proximity sensors sandwich the at least one of the keys therebetween in a width direction of the housing in planar view. ### Claim 5 (depends on 4) The mobile information device in claim 4, wherein the two proximity sensors are centered in a longitudinal direction of the housing in planar view. ### Claim 6 (depends on 1) The mobile information device in claim 1, wherein the at least two predetermined proximity sensors are one of: a first combination including two proximity sensors that sandwich at least one of the keys therebetween in a width direction of the housing in planar view; and a second combination including two proximity sensors that are (i) between a key group, formed from the keys, and one of two longitudinal sides of the housing in planar view, and (ii) aligned with one another in a longitudinal direction of the housing. ### Claim 7 (depends on 1) The mobile information device in claim 1, wherein the at least two predetermined proximity sensors are one of: a first combination including two proximity sensors that sandwich at least one of the keys therebetween; and a second combination including two proximity sensors that are (i) between a key group, formed from the keys, and one of two short sides of the housing in planar view, and (ii) aligned with one another in a width direction of the housing. ### Claim 8 (depends on 7) The mobile information device in claim 7, wherein a receiver unit, a display unit and the key group are disposed on the surface of the housing in respective order, and the at least two predetermined proximity sensors are between the key group and a short side closest to the key group among the two short sides of the housing. ### Claim 9 (depends on 1) The mobile information device in claim 1, wherein the keys and the N proximity sensors are each a capacitive touch sensor. ### Claim 10 (depends on 9) The mobile information device in claim 9, wherein each of the keys is configured to detect a touch operation when the sensing target includes a human finger that is in a contact state with the key, the N proximity sensors are configured to detect the proximity state between when the sensing target is separated by no greater than a predetermined distance, and when the sensing target is in a contact state, and the predetermined distance is greater than 0 mm and no more than 5 mm. ### Claim 11 (depends on 10) The mobile information device in claim 10, wherein each of the N proximity sensors is longer than each of the keys in at least one of a width direction and a longitudinal direction of the housing in planar view. ### Claim 12 (depends on 1) The mobile information device in claim 1, wherein a receiver unit, a display unit and the keys are disposed on the surface of the housing in respective order, the N proximity sensors include an ear sensor, not included in the at least two predetermined sensors, that is closer to the receiver unit than to the display unit and that is configured to detect one of a proximity state or a contact state of the sensing target, at least when a human ear is included in the sensing target, and when the ear sensor detects the proximity state or the contact state of the sensing target the control unit blocks the processing in response to the touch operation on the at least one of the keys. ### Claim 13 A control method for controlling a mobile information device that includes: a housing; a plurality of keys disposed on one surface of the housing; a control unit configured to execute processing in response to a touch operation performed on at least one of the keys; and N proximity sensors (N≧2) disposed on the surface of the housing, and each configured to detect a proximity state of a sensing target, the control method comprising: a first step of judging whether the proximity state is detected by at least two predetermined proximity sensors among the N proximity sensors; and a second step of blocking execution of the processing in response to the touch operation performed on the at least one of the keys, when judged in the first step that the at least two predetermined proximity sensors detect the proximity state. ### Claim 14 A computer program for executing control processing that controls a mobile information device that includes: a housing; a plurality of keys disposed on one surface of the housing; a control unit configured to execute processing in response to a touch operation performed on at least one of the keys; and N proximity sensors (N≧2) disposed on the surface of the housing, and each configured to detect a proximity state of a sensing target, the control processing comprising: a first step of judging whether the proximity state is detected by at least two predetermined proximity sensors among the N proximity sensors; and a second step of blocking execution of the processing in response to the touch operation performed on the at least one of the keys, when judged in the first step that the at least two predetermined proximity sensors detect the proximity state.