Abstract:
A series of degree-of-approach data of the same object generated over a plurality of cycles of a detection operation is averaged in filter processing of the filter processing unit, and accordingly, the degree-of-approach data after averaging is acquired. Therefore, even in a case in which the degree-of-approach data is temporarily greatly changed due to an influence of noise, such a temporary change in the degree-of-approach data after averaging is suppressed. Further, response characteristics of a filter in the filter processing of the filter unit are changed according to a noise level which is detected by a noise detection unit. Accordingly, since appropriate filter processing according to the noise level is performed on the degree-of-approach data, the degree-of-approach data in which the influence of noise is effectively reduced is obtained.
Abstract:
Threshold values smaller than degrees of proximity of an object indicated by detection data at peak positions are set based on detection data of the peak positions at which a degree of proximity of the object is higher than that of surrounding detection positions. An evaluation value according to an area of a region on a detection surface occupied by a group of detection positions, including the peak positions, in which degrees of proximity of the object indicated by detection data are higher than the threshold values, is calculated, and it is determined whether the object in proximity to the peak position is a finger or a palm based on the evaluation value.
Abstract:
An input device includes a measurement unit configured to measure a physical quantity according to an operation including at least one of touch of an operating object and proximity of the operating object, a determination unit configured to determine an operation state including an operation existence state and an operation nonexistence state, on the basis of at least a base value and the physical quantity, and a base value updating unit configured to update the base value using the physical quantity when a magnitude of a change in the physical quantity per predetermined time falls within a predetermined range, during an operation existence period in which the operation state is the operation existence state.
Abstract:
Provided is an input device including a coordinate input unit having plural capacitance detection units, a capacitance measurement unit that measures capacitance for each of the plural capacitance detection units, and performs an AD conversion on the measured capacitance to output the converted capacitance as a measurement signal, and a control unit that controls the capacitance measurement unit, calculates a data signal by arithmetically operating the measurement signal, stores the data signal in association with coordinate information of the capacitance detection unit, and outputs a control signal. The control unit calculates a difference value between a predetermined reference value and the data signal at a constant time interval, performs a weighted average process on the data signal and the predetermined reference value to update and store a value on which the process is performed as a new reference value, and changes a weight given to the weighted average process.
Abstract:
An input apparatus includes a plurality of electrodes spaced apart from each other, a signal processing unit configured to output an input signal depending on a change in a capacitance of each electrode, and a determination unit configured to determine whether an operation object comes in a proximity of at least one of electrodes based on input signals output from the signal processing unit. The determination unit makes a determination such that in a case where one of the input signals is greater than or equal to a first threshold value and an integral value of another of the plurality of input signals in a predetermined integration period is greater than or equal to a second threshold value, it is determined that an operation object has come in a proximity of an electrode corresponding to the one of the input signals.
Abstract:
An input device includes an input operating unit that includes a plurality of capacitance detection units and on which an operating body performs an approach operation, a capacitance measurement unit that measures a capacitance value for each capacitance detection unit and outputs the measured capacitance value as a measurement signal, and a control unit that acquires the measurement signal in association with the capacitance detection unit, updates a base value using the measurement signal, obtains a capacitance change value from a difference between the measurement signal and the base value, and determines whether the capacitance change value exceeds a first threshold value to detect whether or not there is an operation, in which the control unit compares a sum total of the capacitance change values that are negative values with a second threshold value to determine that foreign matter is removed.
Abstract:
An input device includes a sensor unit, a processing unit, a storage unit, and an interface unit. The processing unit includes: a change amount calculating section for calculating the temporal change amount of the electrostatic capacitance that is detected by the sensor unit and that changes according to the proximity degree of an object with respect to a detection surface; a determination section for determining a touch operation corresponding to an operation on the detection surface using a fingertip, a palm operation corresponding to an operation on the detection surface using a palm, and a grip operation corresponding to an operation on a conductor portion, based on the calculated change amount; and a reset section for performing reset processing in a case where the duration of a state, in which a palm operation is not determined and a grip operation is determined, is a first predetermined time or more.
Abstract:
A degree of approach of an object in positions of a detection surface is periodically detected by a sensor unit, a group of detection data items indicating a result of the detection is generated in every one of cycles. The group of detection data items generated in the sensor unit is acquired in every one of cycles by a detection data acquisition unit. In the error determination unit, it is determined in every one of cycles whether there is an error in the detection operation due to noise based on a degree of a temporal change and a degree of a positional change in the detection data. When it is determined by the error determination unit that there is an error in the detection operation of one cycle, a process of acquiring the detection data generated in the one cycle is skipped in the detection data acquisition unit.
Abstract:
AN inputting device includes: a coordinate inputting unit in which multiple capacitance detection units are arranged, and at which an operating body performs a close proximity operation; a capacitance measurement unit that measures an electrostatic capacitance of each capacitance detection unit and outputs the measured electrostatic capacitance as a measurement signal; and a control unit that controls the capacitance measurement unit, associates the measurement signal with coordinate information on the capacitance detecting unit, obtains and calculates the associated measurement signal, calculates, and, outputs a control signal, in which the control unit determines attention coordinates, compares a value of the measurement signal of the determined attention coordinates and each value of the measurement signals of the multiple pieces of coordinate information adjacent to the attention coordinates, and, detects the attention coordinates as an operating point at which an operating body performs the close proximity operation.
Abstract:
Evaluation values regarding a change in velocity of an object at coordinates of a detection surface are calculated on the basis of a series of coordinate data of the same object, and it is determined whether there is an error in each coordinate data on the basis of the evaluation values. In a case in which an extreme change in a velocity of the object occurs due to an influence of noise or the like, it is possible to accurately determine an error of the coordinate data on the basis of the evaluation values. Since the coordinate data in which it is determined that there is an error is corrected with data indicating the same coordinate P as that of coordinate data immediately before such coordinate data, the error of the detection result of the coordinates can be effectively reduced.