Information processing apparatus, display control method, and storage medium

Abstract

An information processing apparatus acquires identification information about a wireless device detected by a detection apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, and movement amount information about a movement amount by which the detection apparatus has moved between an optional first clock time and an optional second clock time, determines, with use of the movement amount information and detection clock time information and identification information about each of a plurality of wireless devices, relative positions of the plurality of wireless devices, and causes a display unit to display information about the determined relative positions of the plurality of wireless devices.

What is claimed is: 
     
         1 . An information processing apparatus comprising:
 an acquisition unit configured to acquire identification information about a wireless device detected by a detection apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, and movement amount information about a movement amount by which the detection apparatus has moved between an optional first clock time and an optional second clock time;   a determination unit configured to, with use of the movement amount information and detection clock time information and identification information about each of a plurality of wireless devices, determine relative positions of the plurality of wireless devices; and   a display control unit configured to cause a display unit to display information about the relative positions of the plurality of wireless devices determined by the determination unit.   
     
     
         2 . The information processing apparatus according to  claim 1 , further comprising a setting unit configured to set a reference position for the wireless device and the detection apparatus,
 wherein the determination unit determines pieces of positional information about the plurality of wireless devices with use of the relative positions of the plurality of wireless devices and the reference position set by the setting unit, and the display control unit causes the display unit to display the pieces of positional information.   
     
     
         3 . The information processing apparatus according to  claim 2 , wherein the setting unit sets, as the reference position, a position at which a specific operation has been performed on the detection apparatus or a position at which a specific wireless device serving as a reference and the detection apparatus have communicated with each other. 
     
     
         4 . The information processing apparatus according to  claim 1 , further comprising an estimation unit configured to estimate at least one of a distance between the detection apparatus and the wireless device and a direction of the wireless device relative to the detection apparatus,
 wherein the determination unit determines the relative positions based on at least one of the distance and the direction estimated by the estimation unit.   
     
     
         5 . The information processing apparatus according to  claim 1 , wherein the display control unit updates the information, which the display unit is caused to display, each time the relative positions are changed. 
     
     
         6 . The information processing apparatus according to  claim 1 , wherein the display unit, which is caused by the display control unit to display the information, is included in the information processing apparatus. 
     
     
         7 . The information processing apparatus according to  claim 1 , wherein the display unit is included in a display apparatus different from the information processing apparatus. 
     
     
         8 . The information processing apparatus according to  claim 1 , wherein the acquisition unit acquires the identification information, the detection clock time information, and the movement amount information from the detection apparatus. 
     
     
         9 . The information processing apparatus according to  claim 1 , wherein the detection apparatus is a radio-frequency identification (RFID) reader, the wireless device is an RFID tag, and the detection apparatus detects the wireless device using RFID. 
     
     
         10 . The information processing apparatus according to  claim 1 , wherein the detection apparatus detects the wireless device using an antenna capable of switching radiation directivities of radio waves. 
     
     
         11 . A display control method comprising:
 acquiring identification information about a wireless device detected by a detection apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, and movement amount information about a movement amount by which the detection apparatus has moved between an optional first clock time and an optional second clock time;   determining, with use of the movement amount information and detection clock time information and identification information about each of a plurality of wireless devices, relative positions of the plurality of wireless devices; and   causing a display unit to display information about the determined relative positions of the plurality of wireless devices.   
     
     
         12 . A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to perform a display control method comprising:
 acquiring identification information about a wireless device detected by a detection apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, and movement amount information about a movement amount by which the detection apparatus has moved between an optional first clock time and an optional second clock time;   determining, with use of the movement amount information and detection clock time information and identification information about each of a plurality of wireless devices, relative positions of the plurality of wireless devices; and   causing a display unit to display information about the determined relative positions of the plurality of wireless devices.   
     
     
         13 . An information processing apparatus comprising:
 an acquisition unit configured to acquire identification information about a wireless device detected by an apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, movement amount information about a movement amount of the detection apparatus, and acquisition clock time information about a clock time at which the detection apparatus has acquired the movement amount information;   a determination unit configured to, when an instruction for displaying positional information about the wireless device has been issued, determine a relative position of the wireless device relative to the detection apparatus based on the identification information, the detection clock time information, the movement amount information, and the acquisition clock time information acquired by the acquisition unit; and   a display control unit configured to cause a display unit to display information about the relative position of the wireless device determined by the determination unit.   
     
     
         14 . A display control method comprising:
 acquiring identification information about a wireless device detected by an apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, movement amount information about a movement amount of the detection apparatus, and acquisition clock time information about a clock time at which the detection apparatus has acquired the movement amount information;   determining, when an instruction for displaying positional information about the wireless device has been issued, a relative position of the wireless device relative to the detection apparatus based on the identification information, the detection clock time information, the movement amount information, and the acquisition clock time information as acquired; and   causing a display unit to display information about the determined relative position of the wireless device.   
     
     
         15 . A non-transitory computer-readable storage medium storing computer- executable instructions that, when executed by a computer, cause the computer to perform a display control method comprising:
 acquiring identification information about a wireless device detected by an apparatus which detects wireless devices, detection clock time information about a clock time at which the detection apparatus has detected the wireless device, movement amount information about a movement amount of the detection apparatus, and acquisition clock time information about a clock time at which the detection apparatus has acquired the movement amount information;   determining, when an instruction for displaying positional information about the wireless device has been issued, a relative position of the wireless device relative to the detection apparatus based on the identification information, the detection clock time information, the movement amount information, and the acquisition clock time information as acquired; and   causing a display unit to display information about the determined relative position of the wireless device.