WO2014156385A1 - 測位装置とその制御方法、および、プログラム - Google Patents
測位装置とその制御方法、および、プログラム Download PDFInfo
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- WO2014156385A1 WO2014156385A1 PCT/JP2014/053985 JP2014053985W WO2014156385A1 WO 2014156385 A1 WO2014156385 A1 WO 2014156385A1 JP 2014053985 W JP2014053985 W JP 2014053985W WO 2014156385 A1 WO2014156385 A1 WO 2014156385A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/005—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 with correlation of navigation data from several sources, e.g. map or contour matching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/48—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
Definitions
- the present invention relates to a positioning device, a control method thereof, and a program.
- a portable device In recent years, some mobile devices such as mobile phones and smartphones are equipped with positioning devices that measure the position. According to such a portable device, the locus of movement of the portable device can be displayed by plotting the positions measured by the positioning device on the map and connecting them in chronological order. Such a positioning device is also mounted on a car navigation device or the like.
- Patent Document 1 Japanese Patent Laid-Open No. 2008-170278
- Patent Document 2 Japanese Patent Laid-Open No. 8-33434
- the power consumption of high-precision positioning means is larger than the power consumption of low-precision positioning means.
- the interval at which the high-accuracy positioning means performs measurement is lengthened, and the position measured by the high-accuracy positioning means at a predetermined time interval is complemented with the position measured by the low-accuracy positioning means.
- JP 2008-170278 A Japanese Patent Laid-Open No. 8-33434
- An object of the present invention is to provide a positioning apparatus, a control method thereof, and a program capable of obtaining a highly accurate locus while suppressing an increase in power consumption.
- the positioning device of the present invention provides: First positioning means for measuring the position of the positioning device at predetermined time intervals; Second positioning means for measuring the position of the positioning device that is less accurate than the first positioning means at a shorter time interval than the first positioning means; Correction of the measurement result of the second positioning means based on the position measured at the predetermined time by the first positioning means and the position at the predetermined time obtained from the measurement result by the second positioning means Correction means for performing Generating means for generating trajectory information indicating the trajectory of movement of the measuring device based on the measurement result by the first positioning means and the measurement result by the second measurement means after correction by the correction means; Have.
- a method for controlling a positioning device of the present invention includes: Performing a first measurement for measuring the position of the positioning device at a predetermined time interval; Performing a second measurement of measuring the position of the positioning device, which is less accurate than the first measurement, at a shorter time interval than the first measurement; Correcting the measurement result by the second positioning based on the position measured at the predetermined time by the first positioning and the position at the predetermined time obtained from the measurement result by the second positioning; Based on the measurement result by the first measurement and the measurement result by the second measurement after the correction by the correction, the trajectory information indicating the movement trajectory of the measurement apparatus is generated.
- the program of the present invention To the computer in the positioning device, A first measurement process for measuring the position of the positioning device at predetermined time intervals; A second measurement process for measuring the position of the positioning device, which is less accurate than the first measurement process, at a shorter time interval than the first measurement process; Correction of the measurement result by the second measurement process based on the position measured at the predetermined time by the first measurement process and the position at the predetermined time obtained from the measurement result by the second measurement process Correction processing to perform Trajectory information indicating a trajectory of movement of the measurement device during a period in which the plurality of measurements are performed based on a measurement result by the first measurement process and a measurement result by the second measurement process after the correction process. And generating processing for generating.
- a highly accurate trajectory can be obtained while suppressing an increase in power consumption.
- FIG. 1 is a block diagram showing a configuration of a positioning device 10 according to an embodiment of the present invention.
- the positioning device 10 is mounted on a car navigation device, a mobile phone, a smartphone, a tablet or notebook personal computer, a portable game machine, a PDA (Personal Data Assistants), or the like.
- the 1 includes a high-accuracy positioning unit 11, a low-accuracy positioning unit 12, a correction unit 13, and a trajectory display unit 14.
- the high-precision positioning unit 11 is an example of a first positioning unit
- the low-precision positioning unit 12 is an example of a second positioning unit
- the correction unit 13 is an example of a correction unit
- the trajectory display unit 14 is generated. It is an example of a means (generation part).
- the high-precision positioning unit 11 measures the position of the positioning device 10, generates first position information indicating the measurement result, and outputs the first position information to the correction unit 13.
- the high-accuracy positioning unit 11 receives a GPS signal from a GPS satellite, for example, and performs measurement based on the received GPS signal.
- the low-accuracy positioning unit 12 measures the position of the positioning device 10, generates second position information indicating the measurement result, and outputs the second position information to the correction unit 13.
- the low-accuracy positioning unit 12 performs, for example, measurement based on autonomous navigation using an acceleration sensor or the like, or measurement using information from a wireless network.
- measurement based on autonomous navigation using an acceleration sensor or the like performed by the low-accuracy positioning unit 12 or measurement based on information from a wireless network is more accurate than measurement based on GPS signals performed by the high-accuracy positioning unit 11. Low, but low power consumption.
- the correction unit 13 measures each of the first position information generated by the high-precision positioning unit 11 and the second position information generated by the low-precision positioning unit 12 and the measurement. Is stored in association with time information indicating the time at which. Further, the correction unit 13 corrects the second position information based on the position measured at a certain time at the high accuracy positioning unit 11 and the position at the same time obtained from the measurement result of the low accuracy positioning unit 12.
- the trajectory display unit 14 generates and outputs trajectory information indicating a trajectory of movement of the positioning device 10 based on the first position information stored in the correction unit 13 and the corrected second position information.
- the information is displayed on a display unit or the like of the device on which the positioning device 10 is mounted.
- FIG. 2 is a flowchart showing the operation of the positioning device 10.
- the high-accuracy positioning unit 11 and the low-accuracy positioning unit 12 each measure at predetermined time intervals and output position information to the correction unit 13.
- the second position information is used for complementing the positions measured by the high-precision positioning unit 11 at predetermined time intervals. Therefore, the time interval at which the low-accuracy positioning unit 12 performs measurement is usually shorter than the time interval at which the high-accuracy positioning unit 11 performs measurement.
- the correction unit 13 stores the positional information generated by the high-precision positioning unit 11 and the low-accuracy positioning unit 12 in association with the time at which the measurement was performed (step S22).
- the correction unit 13 corrects the stored second position information (step S24).
- a period for obtaining the trajectory hereinafter referred to as a designated period.
- the correction unit 13 corrects the second position information generated according to the measurement performed during the specified period. Details of the correction of the second position information will be described later.
- the trajectory display unit 14 After the correction of the second position information, the trajectory display unit 14 generates the trajectory information based on the first position information generated according to the measurement performed in the specified period and the corrected second position information. Output (step S25).
- the correction unit 13 extracts the first position information and the second position information generated according to the measurement performed in the specified period, and specifies the position indicated by each extracted position information.
- FIG. 3 is a diagram illustrating an example of a time-series change in the position indicated by the first position information and the second position information.
- a white circle indicates a position indicated by the first position information
- a black circle indicates a position indicated by the second position information.
- a broken line arrow indicates an actual movement trajectory of the positioning apparatus 10
- a solid line arrow indicates a trajectory obtained by connecting the positions indicated by the position information.
- the correction unit 13 calculates a period from the previous time (first time) to the later time (second time). The correction interval is determined. Further, the correction unit 13 determines the position indicated by the first position information generated according to the measurement performed by the high-precision positioning unit 11 at the first time as the correction section start point 31 (first position). The position indicated by the first position information generated according to the measurement performed by the high-precision positioning unit 11 at the second time is determined as the correction section end point 32 (second position).
- the correction unit 13 determines the position obtained from the measurement result of the low-accuracy positioning unit 12 at the second time as the correction end point 33 (third position).
- the correcting unit 33 measures the position indicated by the second position information generated according to the measurement at the timing two times before the second time and the timing one time before the second time. 2 times before the second time from the position measured at the timing one time before the second time and on the extension line with the position indicated by the second position information obtained according to The position obtained by adding the distance between the position measured at the timing and the position measured at the timing immediately before the second time is estimated as the correction end point 33.
- the correction unit 13 rotates the correction end point 33 around the correction section start point 31 so that the correction end point 33 and the correction section end point 32 coincide with each other, and The distance to the correction end point 33 is enlarged or reduced. Then, the correction unit 13 determines the rotation angle of the correction end point 33 around the correction section start point 31 where the correction end point 33 and the correction section end point 32 coincide. Further, the correction unit 13 determines a magnification (hereinafter referred to as an enlargement / reduction ratio) for expanding or reducing the distance between the correction end point 31 and the correction end point 33 where the correction end point 33 and the correction end point 32 coincide. .
- an enlargement / reduction ratio for expanding or reducing the distance between the correction end point 31 and the correction end point 33 where the correction end point 33 and the correction end point 32 coincide.
- the correction unit 13 determines the position indicated in each of the second position information other than the second position information indicating the correction end point 33, as shown in FIG. Then, the correction section start point 31 is moved as a center. In the following, it is assumed that the position indicated by the corrected second position information is indicated by a circle with a right-upward hatching.
- the trajectory display unit 14 connects the positions indicated by the first position information and the corrected second position information in time series as shown in FIG. Ask.
- the trajectory obtained from the first position information and the second position information before correction (FIG. 3) is compared with the trajectory obtained from the first position information and the second position information after correction (FIG. 6).
- the trajectory obtained from the first position information and the corrected second position information has a smaller error from the actual movement trajectory of the positioning device 10 and higher accuracy.
- the error from the movement trajectory is small and the accuracy is high.
- the positioning device 10 of the present embodiment includes the high-precision positioning unit 11 and the low-precision positioning unit 12, and includes the high-precision positioning unit 11 and the low-speed positioning unit 12 at the same time included in the correction section.
- the second position information generated according to the measurement performed by the low-accuracy positioning unit 12 in the correction section is corrected, and generated according to the measurement performed by the high-precision positioning unit 11 in the correction section.
- Trajectory information is generated and output based on the first position information and the corrected second position information.
- the second position information is corrected so that the error in the measurement results of the high-precision positioning unit 11 and the low-speed positioning unit 12 at the same time is reduced, and the locus is determined based on the corrected second position information.
- correction unit 13 may not perform correction when the distance between the correction end point 33 and the correction section end point 32 is larger than a predetermined threshold.
- the correction unit 13 corrects when the angle formed by the straight line connecting the correction section start point 31 and the correction section end point 32 and the straight line connecting the correction section start point 31 and the correction end point 33 is larger than a predetermined threshold. May not be performed.
- the correction unit 13 performs correction when the angle formed by the straight line connecting the correction section start point 31 and the correction section end point 32 and the straight line connecting the correction section start point 31 and the correction end point 33 is larger than a predetermined threshold. Do not do.
- the correction unit 13 may not perform correction when the total amount of movement of the position indicated by the second position information before and after the correction of the second position information is larger than a predetermined threshold. Good.
- the correction unit 13 does not perform correction when the total movement amount of the position indicated by the second position information before and after the correction of the second position information is larger than a predetermined threshold value.
- the correction unit 13 may not perform correction when the distance between the correction section start point 31 and the correction section end point 32 is smaller than a predetermined threshold.
- the correction unit 13 does not perform correction when the distance between the correction section start point 31 and the correction section end point 32 is smaller than a predetermined threshold.
- the correction unit 13 does not obtain valid second position information for a predetermined time or more in the correction section (for example, when the second position information is not obtained or the second position information is not obtained). (If is invalid), the correction may not be performed.
- the low-accuracy positioning unit 12 performs measurement based on autonomous navigation dedicated to walking, the low-accuracy positioning unit 12 performs measurement while riding on the vehicle when the vehicle is in the correction section.
- the obtained second position information is not valid. In such a case, the accuracy of the trajectory obtained based on the corrected second position information may be deteriorated. Therefore, the correction unit 13 does not perform correction when valid second position information is not obtained for a predetermined time or longer.
- the correction unit 13 has been described using an example in which position information is stored.
- the positioning device 10 may be provided with a storage unit 15 that stores position information.
- the correction unit 13 extracts, from the position information stored in the storage unit 15, the first position information and the second position information generated by performing the measurement during the specified period, and the correction described above. And the second position information after correction is stored in the storage unit 15.
- the trajectory display unit 14 includes the first position information generated by performing measurement during the period specified in the output request for trajectory information, and the second position after the correction unit 13 performs correction. Information is extracted, and locus information is output using the extracted position information.
- FIG. 8 is a block diagram illustrating an example of a hardware configuration of the positioning device 10.
- the positioning device 10 includes a first positioning unit 21 (first positioning unit), a second positioning unit 22 (second positioning unit), an input unit 23, an output unit 24, and a ROM (Read Only Memory). ) 25, RAM (Random Access Memory) 26, and CPU (Central Processing Unit) 27.
- the above-described units are connected to each other by a bus 28.
- the high precision positioning unit 21 measures the position of the positioning device 10.
- the high-accuracy positioning unit 11 has an antenna for receiving a GPS signal, for example, and performs measurement based on the received GPS signal.
- the low precision positioning unit 22 measures the position of the positioning device 10.
- the low-accuracy positioning unit 22 includes, for example, an acceleration sensor, and performs measurement based on autonomous navigation using the acceleration detected by the acceleration sensor.
- the low-accuracy positioning unit 22 has an antenna for receiving information from the wireless network, and performs measurement based on the received information.
- the input unit 23 includes input devices such as a touch sensor, a keyboard, a mouse, and a joystick. The user can operate these input devices to input a trajectory information output request or the like.
- the output unit 24 includes an output device such as a display. In the output unit 24, for example, a locus of movement of the positioning device 10 is displayed.
- the ROM 25 is a memory that stores basic programs and parameters necessary for causing the positioning device 10 to function.
- the RAM 26 is a memory in which data can be written and erased, and provides a working memory when the CPU 27 performs various processes.
- the CPU 27 is a central processing unit that executes various processes in accordance with programs stored in the ROM 25 or the like.
- the CPU 27 stores the results of positioning performed by the high-accuracy positioning unit 21 and the low-accuracy positioning unit 22 in the RAM 26 together with time information indicating the time at which positioning is performed.
- the CPU 27 corrects the measurement result of the low-precision positioning unit 22 in the specified period specified in the output request of the trajectory information described with reference to FIGS. 3 to 5. I do. Further, the CPU 27 generates trajectory information based on the measurement result of the high-precision positioning unit 21 and the corrected measurement result of the low-accuracy positioning unit 22 in the specified period specified in the output request of the trajectory information, and the trajectory The locus indicated by the information is output to the output 24.
- the method performed by the positioning device according to the present invention may be applied to a program for causing a computer to execute.
- the program can be stored in a storage medium and can be provided to the outside via a network.
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Abstract
Description
前記測位装置の位置の計測を所定の時間間隔で行なう第1の測位手段と、
前記第1の測位手段よりも精度の低い前記測位装置の位置の計測を前記第1の測位手段よりも短い時間間隔で行う第2の測位手段と、
前記第1の測位手段により所定の時刻に計測された位置と、前記第2の測位手段による計測結果から得られる前記所定の時刻における位置とに基づいて前記第2の測位手段の計測結果の補正を行う補正手段と、
前記第1の測位手段による計測結果と前記補正手段による補正後の前記第2の計測手段による計測結果とに基づいて、前記計測装置の移動の軌跡を示す軌跡情報を生成する生成手段と、を有する。
前記測位装置の位置の計測を所定の時間間隔で行う第1の計測を行ない、
前記第1の計測よりも精度の低い前記測位装置の位置の計測を前記第1の計測よりも短い時間間隔で行う第2の計測を行ない、
前記第1の測位により所定の時刻に計測された位置と、前記第2の測位による計測結果から得られる前記所定の時刻における位置とに基づいて前記第2の測位による計測結果の補正を行い、
前記第1の計測による計測結果と前記補正による補正後の前記第2の計測による計測結果とに基づいて、前記計測装置の移動の軌跡を示す軌跡情報を生成する。
測位装置内のコンピュータに、
前記測位装置の位置の計測を所定の時間間隔で行う第1の計測処理と、
前記第1の計測処理よりも精度の低い前記測位装置の位置の計測を前記第1の計測処理よりも短い時間間隔で行う第2の計測処理と、
前記第1の計測処理により所定の時刻に計測された位置と、前記第2の計測処理による計測結果から得られる前記所定の時刻における位置とに基づいて前記第2の計測処理による計測結果の補正を行う補正処理と、
前記第1の計測処理による計測結果と前記補正処理後の前記第2の計測処理による計測結果とに基づいて、前記複数の計測が行われた期間における前記計測装置の移動の軌跡を示す軌跡情報を生成する生成処理と、を実行させる。
Claims (10)
- 測位装置であって、
前記測位装置の位置の計測を所定の時間間隔で行なう第1の測位手段と、
前記第1の測位手段よりも精度の低い前記測位装置の位置の計測を前記第1の測位手段よりも短い時間間隔で行う第2の測位手段と、
前記第1の測位手段により所定の時刻に計測された位置と、前記第2の測位手段による計測結果から得られる前記所定の時刻における位置とに基づいて前記第2の測位手段の計測結果の補正を行う補正手段と、
前記第1の測位手段による計測結果と前記補正手段による補正後の前記第2の計測手段による計測結果とに基づいて、前記計測装置の移動の軌跡を示す軌跡情報を生成する生成手段と、を有することを特徴とする測位装置。 - 請求項1記載の測位装置において、
前記補正手段は、第1の時刻において前記第1の測位手段により計測された位置である第1の位置と、前記第1の時刻に続く第2の時刻において前記第1の測位手段により計測された位置である第2の位置と、前記第2の測位手段による計測結果から得られる前記第2の時刻における位置である第3の位置と、に基づいて、前記第1の時刻から第2時刻までの前記第2の計測手段による計測結果の補正を行うことを特徴とする測位装置。 - 請求項2記載の測位装置において、
前記補正手段は、前記第1の位置を中心として、前記第2の位置と前記第3の位置とが一致するように前記第3の位置を回転させる回転角、および、前記第1の位置と前記第3の位置との間の距離を拡大あるいは縮小させる倍率を決定し、該決定した回転角および倍率に基づいて、前記第2の測位手段の計測結果の補正を行うことを特徴とする測位装置。 - 請求項3記載の測位装置において、
前記補正手段は、前記第2の位置と前記第3の位置との間の距離が所定の閾値よりも大きい場合には、前記補正を行わないことを特徴とする測位装置。 - 請求項3または4に記載の測位装置において、
前記補正手段は、前記第1の位置と前記第2の位置とを結ぶ直線と、前記第1の位置と前記第3の位置とを結ぶ直線とがなす角度が所定の閾値よりも大きい場合には、前記補正を行わないことを特徴とする測位装置。 - 請求項3から5のいずれか1項に記載の測位装置において、
前記補正手段は、前記第2の計測手段の計測結果の補正による前記第2の計測手段により計測された位置の移動量の合計が所定の閾値よりも大きい場合には、前記補正を行わないことを特徴とする測位装置。 - 請求項3から6のいずれか1項に記載の測位装置において、
前記補正手段は、前記第1の位置と前記第2の位置との間の距離が所定の閾値よりも小さい場合には、前記補正を行わないことを特徴とする測位装置。 - 請求項3から7のいずれか1項に記載の測位装置において、
前記補正手段は、前記所定の期間内において、前記第2の測位手段による有効な計測結果が無い期間が所定の閾値よりも長い場合には、前記補正を行わないことを特徴とする測位装置。 - 測位装置の制御方法であって、
前記測位装置の位置の計測を所定の時間間隔で行う第1の計測を行ない、
前記第1の計測よりも精度の低い前記測位装置の位置の計測を前記第1の計測よりも短い時間間隔で行う第2の計測を行ない、
前記第1の計測により所定の時刻に計測された位置と、前記第2の測位による計測結果から得られる前記所定の時刻における位置とに基づいて前記第2の測位による計測結果の補正を行い、
前記第1の計測による計測結果と前記補正による補正後の前記第2の計測による計測結果とに基づいて、前記計測装置の移動の軌跡を示す軌跡情報を生成することを特徴とする制御方法。 - 測位装置内のコンピュータに、
前記測位装置の位置の計測を所定の時間間隔で行う第1の計測処理と、
前記第1の計測処理よりも精度の低い前記測位装置の位置の計測を前記第1の計測処理よりも短い時間間隔で行う第2の計測処理と、
前記第1の計測処理により所定の時刻に計測された位置と、前記第2の計測処理による計測結果から得られる前記所定の時刻における位置とに基づいて前記第2の計測処理による計測結果の補正を行う補正処理と、
前記第1の計測処理による計測結果と前記補正処理後の前記第2の計測処理による計測結果とに基づいて、前記計測装置の移動の軌跡を示す軌跡情報を生成する生成処理と、を実行させるプログラム。
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US20160025496A1 (en) | 2016-01-28 |
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