Electronic terminal, input correction method, and program

Abstract

An information processing apparatus that includes a first sensor that receives a first signal; a second sensor that receives a second signal; and circuitry that calculates a position of a source from which the first signal and the second signal are transmitted based on a first time at which the first signal is received at the first sensor and a second time at which the second signal is received at the second sensor, and controls a display to display an image corresponding to a path obtained based on calculated changes in position of the source.

1 . An information processing apparatus comprising:
 a first sensor that receives a first signal;   a second sensor that receives a second signal; and   circuitry configured to
 calculate a position of a source from which the first signal and the second signal are transmitted based on a first time at which the first signal is received at the first sensor and a second time at which the second signal is received at the second sensor; and 
 control a display to display an image corresponding to a path obtained based on calculated changes in position of the source. 
   
     
     
         2 . The information processing apparatus of  claim 1 , wherein the first sensor is an infrared sensor that receives an infrared signal transmitted from the source. 
     
     
         3 . The information processing apparatus of  claim 1 , wherein the second sensor is an infrared sensor that receives an infrared signal transmitted from the source. 
     
     
         4 . The information processing apparatus of  claim 1 , wherein the first sensor is an ultrasonic sensor that receives an ultrasonic signal transmitted from the source. 
     
     
         5 . The information processing apparatus of  claim 1 , wherein the second sensor is an ultrasonic sensor that receives an ultrasonic signal transmitted from the source. 
     
     
         6 . The information processing apparatus of  claim 1 , wherein the information processing apparatus is a mobile terminal including a housing having top, bottom and side surfaces. 
     
     
         7 . The information processing apparatus of  claim 6 , wherein the first sensor is located substantially in a center of a side surface of the housing. 
     
     
         8 . The information processing apparatus of  claim 7 , wherein the second sensor is located on the side surface of the housing on an opposite side of the first sensor. 
     
     
         9 . The information processing apparatus of  claim 1 , wherein the circuitry is configured to calculate the position based on a difference between the first time and the second time. 
     
     
         10 . The information processing apparatus of  claim 1 , further comprising:
 an acceleration sensor that detects an acceleration externally applied to the information processing apparatus.   
     
     
         11 . The information processing apparatus of  claim 10 , wherein the circuitry is configured to perform correction processing to correct a position of the information processing apparatus relative to the source when an output of the acceleration sensor exceeds a predetermined threshold value. 
     
     
         12 . The information processing apparatus of  claim 11 , wherein the correction processing includes controlling the display to sequentially display a first mark and a second mark on the image displayed by the display. 
     
     
         13 . The information processing apparatus of  claim 12 , wherein upon displaying the first mark a next position calculated by the circuitry is registered as a first position corresponding to the first mark. 
     
     
         14 . The information processing apparatus of  claim 13 , wherein upon displaying the second mark a next position calculated by the circuitry is registered as a second position corresponding to the second mark. 
     
     
         15 . The information processing apparatus of  claim 12 , wherein the first mark and the second mark are selected from among points on the path in the displayed image and correspond to an evaluation value in a horizontal direction and an evaluation value in a vertical direction. 
     
     
         16 . The information processing apparatus of  claim 1 , wherein the first signal and the second signal a same signal transmitted from the source. 
     
     
         17 . The information processing apparatus of  claim 1 , wherein the circuitry is configured to control the display to display an image indicating a distance between two points. 
     
     
         18 . The information processing apparatus of  claim 17 , wherein the circuitry is configured to control the display to display a measurement value corresponding to a difference between a first calculated position of the source and a second calculated position of the source. 
     
     
         19 . A method performed by an information processing apparatus, the method comprising:
 receiving a first signal transmitted from a source at a first sensor at a first time;   receiving a second signal transmitted from the source at a second sensor at a second time;   calculating a position of a source from which the first signal and the second signal are transmitted based on the first time at which the first signal is received at the first sensor and the second time at which the second signal is received at the second sensor; and   controlling a display to display an image corresponding to a path obtained based on calculated changes in position of the source.   
     
     
         20 . A non-transitory computer-readable medium including computer program instructions, which when executed by an information processing apparatus, causes the information processing apparatus to perform a method, the method comprising:
 receiving a first signal transmitted from a source at a first sensor at a first time;   receiving a second signal transmitted from the source at a second sensor at a second time;   calculating a position of a source from which the first signal and the second signal are transmitted based on the first time at which the first signal is received at the first sensor and the second time at which the second signal is received at the second sensor; and   controlling a display to display an image corresponding to a path obtained based on calculated changes in position of the source.