# US 2014/0191989 A1 · Electronic apparatus, and method for controlling electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191989 A1 - Document ID: US20140191989A1 - Status: Published application - Kind: A1 - Application number: 14/009,185 - Filed: 2012-04-03 - Published: 2014-07-10 - Earliest claimed: 2011-04-07 - Assignees: Sharp Kabushiki Kaisha - Inventors: Kohji Saitoh; Akizumi Fujioka; Masami Ozaki; Toshihiro Yanagi - Web page: https://patentgrep.com/patent/US20140191989A1 ## CPC - G06F 1/3262: {Power saving in digitizer or tablet} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)} - G06F 3/04184: {Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally} - G06F 3/044: by capacitive means - G09G 3/3614: {Control of polarity reversal in general} - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 3/3677: {suitable for active matrices only} - G09G 3/3688: {suitable for active matrices only} - G09G 2330/022: in absence of operation, e.g. no data being entered during a predetermined time - G09G 2370/04: Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller - H10K 59/40: OLEDs integrated with touch screens - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Electronic apparatus (100) includes a display device (1), a detecting device (20) which detects an input, a state change detecting section (31), and a control section. The control section controls the detecting device (20) so that the detecting device (20) carries out the detection more times during a non-scanning period in a case where a state change causing an improvement in detection accuracy is detected and so that the detecting device (20) carries out the detection fewer times during the non-scanning period in a case where the state change causing a deterioration in detection accuracy is detected. With the configuration, it is possible to improve detection accuracy of the detecting device while reducing electric power consumption. ## Claims ### Claim 1 An electronic apparatus comprising: a display device which repeats rewriting of image data while alternately repeating (i) a scanning period during which the image data is supplied to a plurality of pixels and (ii) a non-scanning period during which no image data is supplied to the plurality of pixels, the image data retained by the plurality of pixels; a detecting device which detects an input; a state change detecting section which detects a state change causing a change in detection accuracy which the detecting device is required to have so as to detect the input; and a control section which controls the detecting device, the detecting device detecting the input during the non-scanning period of the display device, and the control section controlling the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects the state change causing an improvement in detection accuracy which the detecting device is required to have so as to detect the input and so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects the state change causing a deterioration in detection accuracy which the detecting device is required to have so as to detect the input. ### Claim 2 (depends on 1) The electronic apparatus as set forth in claim 1, wherein: the control section includes: a first control section which outputs a detection number-of-times control signal that instructs the detecting device to carry out the detection more times in the case where the state change detecting section detects the state change causing an improvement in detection accuracy which the detecting device is required to have so as to detect the input and that instructs the detecting device to carry out the detection fewer times in the case where the state change detecting section detects the state change causing a deterioration in detection accuracy which the detecting device is required to have so as to detect the input; and a second control section which controls, in accordance with the detection number-of-times control signal, the detecting device so that the detecting device carries out the detection more or fewer times during the non-scanning period; and the display device includes the second control section. ### Claim 3 (depends on 1) The electronic apparatus as set forth in claim 1, wherein: the detecting device detects an input operation carried out by a touch operation; the state change detecting section detects the state change causing a change in detection accuracy which the detecting device is required to have so as to detect the input operation; and the control section controls the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects the state change causing an improvement in detection accuracy which the detecting device is required to have so as to detect the input operation and so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects the state change causing a deterioration in detection accuracy which the detecting device is required to have so as to detect the input operation. ### Claim 4 (depends on 3) The electronic apparatus as set forth in claim 3, wherein: the state change detecting section detects, as the state change, that a width of a contact with the detecting device of means for carrying out the input operation with respect to the detecting device has been changed between a broad width and a narrow width; and the control section controls the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects that the width of the contact has been changed from the broad width to the narrow width and so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects that the width of the contact has been changed from the narrow width to the broad width. ### Claim 5 (depends on 3) The electronic apparatus as set forth in claim 3, wherein: the state change detecting section detects, as the state change, that the input operation with respect to the detecting device has been changed from an input operation with a finger to an input operation with a pen; and the control section controls the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects that the input operation with respect to the detecting device has been changed from the input operation with the finger to the input operation with the pen. ### Claim 6 (depends on 3) The electronic apparatus as set forth in claim 3, wherein: the state change detecting section detects, as the state change, that the input operation with respect to the detecting device has been changed from an input operation with a pen to an input operation with a finger; and the control section controls the detecting device so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects that the input operation with respect to the detecting device has been changed from the input operation with the pen to the input operation with the finger. ### Claim 7 (depends on 3) The electronic apparatus as set forth in claim 3, wherein: the state change detecting section detects, as the state change, that an operational mode has been switched between a first operational mode in which the input operation is carried out with respect to the detecting device at a relatively low speed and a second operational mode in which the input operation is carried out with respect to the detecting device at a relatively high speed; and the control section controls the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects that the operational mode has been switched from the first operational mode to the second operational mode and so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects that the operational mode has been switched from the second operational mode to the first operational mode. ### Claim 8 (depends on 3) The electronic apparatus as set forth in claim 3, wherein: the state change detecting section detects, as the state change, that an operational mode has been activated in which at least one handwriting input is carried out with respect to the detecting device; and the control section controls the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects that the operational mode has been activated in which the at least one handwriting input is carried out. ### Claim 9 (depends on 3) The electronic apparatus as set forth in claim 3, wherein: the state change detecting section detects, as the state change, that an operational mode has been ended in which a handwriting input is carried out with respect to the detecting device; and the control section controls the detecting device so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects that the operational mode has been ended in which the handwriting input is carried out. ### Claim 10 (depends on 3) An electronic apparatus as set forth in claim 3, further comprising: a temperature sensor which detects an ambient temperature of the detecting device; the state change detecting section detecting, as the state change, that the ambient temperature detected by the temperature sensor which ambient temperature was within a given temperature range in which the detecting device can maintain given detection accuracy has exceeded the given temperature range; and the control section controlling the detecting device so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change detecting section detects that the ambient temperature detected by the temperature sensor has exceeded the given temperature range. ### Claim 11 (depends on 3) An electronic apparatus as set forth in claim 3, further comprising: a temperature sensor which detects an ambient temperature of the detecting device; the state change detecting section detecting, as the state change, that the ambient temperature detected by the temperature sensor which ambient temperature was beyond a given temperature range in which the detecting device can maintain given detection accuracy has fallen within the given temperature range; and the control section controlling the detecting device so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change detecting section detects that the ambient temperature detected by the temperature sensor has fallen within the given temperature range. ### Claim 12 (depends on 1) The electronic apparatus as set forth in claim 1, wherein the display device is a liquid crystal display device. ### Claim 13 (depends on 1) The electronic apparatus as set forth in claim 1, wherein the display device reverses, in a predetermined cycle in one frame, a polarity of a voltage applied to a display element. ### Claim 14 (depends on 1) The electronic apparatus as set forth in claim 1, wherein the display device is an organic EL display device. ### Claim 15 (depends on 1) The electronic apparatus as set forth in claim 1, wherein: the display device includes a signal line drive circuit which outputs display image data; and the signal line drive circuit outputs a detection control signal which instructs the detecting device on a timing at which the detecting device carries out the detection. ### Claim 16 (depends on 3) The electronic apparatus as set forth in claim 3, wherein the detecting device is a capacitance touch panel. ### Claim 17 (depends on 1) The electronic apparatus as set forth in claim 1, wherein the detecting device includes a high-frequency circuit. ### Claim 18 A method for controlling an electronic apparatus including: a display device which repeats rewriting of image data while alternately repeating (i) a scanning period during which the image data is supplied to a plurality of pixels and (ii) a non-scanning period during which no image data is supplied to the plurality of pixels, the image data retained by the plurality of pixels; and a detecting device which detects an input, said method comprising the steps of: (a) detecting a state change causing a change in detection accuracy which the detecting device is required to have so as to detect the input; and (b) controlling the detecting device, the detecting device detecting the input during the non-scanning period of the display device, and the step (b) being carried out so that the detecting device carries out the detection more times during the non-scanning period in a case where the state change causing an improvement in detection accuracy which the detecting device is required to have so as to detect the input is detected in the step (a) and so that the detecting device carries out the detection fewer times during the non-scanning period in a case where the state change causing a deterioration in detection accuracy which the detecting device is required to have so as to detect the input is detected in the step (a).