JP5023111B2 - Information processing apparatus, input information determination method, input information determination program, and recording medium recording the input information determination program - Google Patents

Information processing apparatus, input information determination method, input information determination program, and recording medium recording the input information determination program Download PDF

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JP5023111B2
JP5023111B2 JP2009175497A JP2009175497A JP5023111B2 JP 5023111 B2 JP5023111 B2 JP 5023111B2 JP 2009175497 A JP2009175497 A JP 2009175497A JP 2009175497 A JP2009175497 A JP 2009175497A JP 5023111 B2 JP5023111 B2 JP 5023111B2
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acceleration sensor
input device
information
input
stationary
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JP2011028636A (en
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篤彦 前田
稔 小林
光洋 我妻
智樹 渡部
良輔 青木
洋一 高嶋
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日本電信電話株式会社
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Description

  The present invention relates to an information processing apparatus that determines input information using sensor information of a sensor included in the input apparatus, an input information determination method, an input information determination program, and a recording medium on which the input information determination program is recorded.

  The acceleration sensor has little influence on the design of the input device, is available at a low cost, and is an effective sensor as a sensor that accurately detects the inclination with respect to the direction of gravity. Many input operations have been proposed in which an inclination of an input device is detected using an acceleration sensor and the inclination is input.

  An input operation using an acceleration sensor is described in Patent Document 1, for example.

JP-A-2005-270412

  In order to detect an accurate inclination of the input device, it is necessary that the acceleration sensor itself is stationary (that is, the sensor value of the acceleration sensor becomes a convergence value corresponding to the inclination). In the calculation unit that calculates the posture of a living body using the acceleration sensor of Patent Document 1, it is described that the posture is detected using “relatively slowly changing gravity acceleration”, and this relatively slowly changing portion is an acceleration sensor. It corresponds to the vicinity of the convergence value corresponding to the slope of.

  However, when the input device is changed relatively violently (for example, an operation of shaking the input device), there is a problem that a delay occurs until the acceleration sensor itself stops after the user stops the input device. For this reason, there is a current situation that it is not suitable to use the technique of Patent Document 1 for an application that requires high responsiveness of an information processing apparatus as a receiver in response to a user's operation.

  However, there is a problem that there is a delay from when the user stops the input device until the acceleration sensor itself stops. For this reason, there is a current situation that it is not suitable to use the technique of Patent Document 1 for an application that requires that the responsiveness of the information processing apparatus, which is a receiver, to the user's operation.

  In addition, a method of estimating the convergence value of the acceleration sensor using the individual operation characteristics of the user can be considered, but the effect is not obtained until multiple operation logs indicating all actions during human operation are collected. There is.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the response of an information processing apparatus to a user's input operation without collecting the user's operation log. .

  The present invention is an information processing apparatus that determines input information based on information transmitted from an input apparatus having an acceleration sensor that measures the tilt of the input apparatus and a stationary detection sensor that detects that the input apparatus is stationary. And using the stationary detection sensor information transmitted from the input device to detect when the user stops the input device, and when detecting when the state determining device is stationary, the input The gist of the present invention is to include estimation means for estimating a convergence value of the acceleration sensor using acceleration sensor information transmitted from the apparatus.

  The present invention also provides input information for determining input information based on information transmitted from an input device having an acceleration sensor for measuring the tilt of the input device and a stationary detection sensor for detecting that the input device is stationary. In the determination method, the information processing apparatus uses the stationary detection sensor information transmitted from the input device to stop at a state determination step for detecting when a user stops the input device, and to stop at the state determination step. When the time is detected, the gist is to perform an estimation step of estimating a convergence value of the acceleration sensor using the acceleration sensor information transmitted from the input device.

  Further, the present invention is based on information transmitted from an input device having an acceleration sensor that measures the tilt of the input device and an stationary sensor that detects that the input device is stationary, executed by the information processing device. An input information determination program for determining input information, a state determination step of detecting when the user has stopped the input device using the stationary detection sensor information transmitted from the input device to the information processing device; When the stationary state is detected in the state determination step, the gist is to execute an estimation step of estimating a convergence value of the acceleration sensor using the acceleration sensor information transmitted from the input device.

  Further, the present invention is based on information transmitted from an input device having an acceleration sensor that measures the tilt of the input device and an stationary sensor that detects that the input device is stationary, executed by the information processing device. A recording medium on which an input information determination program for determining input information is recorded, and the information processing apparatus detects when the user has stopped the input apparatus using the stationary detection sensor information transmitted from the input apparatus. A state determining step to perform and an estimation step of estimating a convergence value of the acceleration sensor using the acceleration sensor information transmitted from the input device when the stationary state is detected in the state determining step. The gist.

  According to the present invention, it is possible to improve the response of the information processing apparatus to a user's input operation without collecting the user's operation log, and to reduce a wasteful waiting time at the time of operation. An input operation can be realized.

It is the figure which showed typically the method in which a user operates a remote control terminal. It is a figure which shows an example of the icon selection screen displayed on the display of digital TV. It is the figure which showed typically the relationship between the angle which inclined the remote control terminal, and the icon selected. It is a table | surface which shows an example of the range of the inclination angle of the remote control terminal from which each icon is selected. 1 is an overall configuration diagram of a system according to an embodiment of the present invention. It is a functional block diagram which shows the functional structure of a remote control terminal. 2 is a functional configuration diagram showing a functional configuration of a digital TV 2. FIG. It is a graph which shows the change of the sensor value of the acceleration sensor which arises when changing the icon to select. It is a graph which shows the change of the sensor value of the gyro sensor which arises when changing the icon to select. It is the graph which integrated FIG. 8 and FIG. It is a flowchart which shows operation | movement of the display control part of digital TV.

  Hereinafter, embodiments of the present invention will be described.

[Application of this embodiment]
First, an example of an application in the present embodiment will be described.

  FIG. 1 is a diagram schematically illustrating a method in which a user operates a remote control terminal 1 to input information to a digital TV. The user performs an operation of tilting the remote control terminal 1 in the pitch direction 101 while holding the remote control terminal 1 as illustrated. In the present embodiment, an application that allows the user to select a desired icon of the menu displayed on the digital TV according to the angle at which the remote control terminal 1 is tilted (tilt with respect to the XY plane in FIG. 1). Shall be used.

  FIG. 2 is a diagram illustrating an example of an icon selection screen displayed on the display of the digital TV 2. In the illustrated menu, a numerical arrangement table including five icons displaying numbers 1 to 5 is displayed, and one of the icons can be selected according to the inclination of the remote control terminal 1.

  FIG. 3 is a diagram schematically showing the relationship between the angle at which the remote control terminal 1 is tilted and the icon to be selected. FIG. 3A shows that the icon “1” is selected when the remote control terminal 1 is tilted by 90 °, and FIG. 3B shows that “1” is selected when the remote control terminal 1 is tilted by 45 °. FIG. 3C shows that the icon “3” is selected when the remote control terminal 1 is tilted at 0 ° (when the remote control terminal 1 is not tilted). FIG. 3D shows that the icon “4” is selected when the remote control terminal 1 is tilted to −45 °, and FIG. 3E shows that the remote control terminal 1 is tilted to −90 °. The icon “5” is selected.

  FIG. 4 is a table showing an example of the range of the tilt angle of the remote control terminal 1 from which each icon is selected. In the case of the illustrated table, for example, in order to select the icon “1”, the user needs to tilt the remote control terminal 1 in the range of “54 ° to 90 °”.

In the present embodiment, an acceleration sensor is used to measure the tilt of the remote control terminal 1, and a gyro sensor is used as a stationary detection sensor for determining whether or not the user is stationary on the remote control terminal.
[Overall system configuration]
FIG. 5 is an overall configuration diagram of a system according to the embodiment of the present invention. The system shown in the figure includes a remote control terminal 1 (input device) and a digital TV 2 (information processing device) that can communicate with each other wirelessly or by wire such as infrared rays.

  The remote control terminal 1 includes a special key portion 4 composed of a plurality of special keys 30 to 36 each having a discriminating power that can be discriminated by visual recognition, and four direction keys 51 to indicate up, down, left, and right directions. And a center key 6 disposed at the center of the cross key portion 5. In addition, the remote control terminal 1 includes a gyro sensor that detects whether or not the user is at rest of the remote control terminal 1 and which of the remote control terminal 1 is on a plane perpendicular to the direction of gravity (the XY plane in FIG. 1). And an acceleration sensor for detecting whether it is inclined to some extent.

  The remote control terminal 1 transmits the sensor information detected by each sensor and information on whether or not the user has pressed a key arranged on the remote control terminal 1 to the digital TV 2 so that the user can remotely operate the digital TV 2. can do.

  On the other hand, the digital TV 2 includes a display module such as a Web browser or a widget, executes an operation command corresponding to the input operation of the remote control terminal 1, and displays the execution result on the screen.

[System configuration of remote control terminal]
FIG. 6 is a functional configuration diagram showing a functional configuration of the remote control terminal 1. The remote control terminal 1 shown in the figure is an instruction terminal that outputs various instructions to the digital TV 2 as described above, and includes a key state detection unit 11, an acceleration sensor 12, a gyro sensor 13 (stationary detection sensor), and a microcomputer unit 14. And a transmission unit 15.

  The key state detection unit 11 detects which key is pressed when each special key of the special key unit 4 shown in FIG. 5, each direction key of the cross key unit 5, and the center key 6 is pressed by the user. And the detection result is sent to the microcomputer unit 14. The acceleration sensor 12 measures the tilt of the remote control terminal 1 and sends a sensor value as a measurement result to the microcomputer unit 14. The gyro sensor 13 measures whether or not the remote control terminal 1 is stationary, and sends a sensor value as a measurement result to the microcomputer unit 14.

The microcomputer unit 14 processes each information detected by the key state detection unit 11, the acceleration sensor 12, and the gyro sensor 13, and sends it to the transmission unit 15. The transmission unit 15 transmits a signal processed by the microcomputer unit 14 (information including key input information, sensor value of the acceleration sensor, and sensor value of the gyro sensor) to the digital TV 2 by infrared or wireless communication.
[Digital TV system configuration]
The digital TV 2 of this embodiment measures the inclination of the remote control terminal 1 with respect to the gravity direction based on the acceleration sensor information of the remote control terminal 1 in which the acceleration sensor is incorporated, and predicts the inclination of the remote control terminal 1 in the gravity direction. Is.

  The acceleration sensor 12 is an apparatus that measures acceleration acting in a certain direction, and can detect how much the remote control terminal 1 is inclined with respect to the direction of gravity by detecting acceleration in a plurality of axial directions. it can. The acceleration sensor 12 is classified into an optical type, a mechanical type, a semiconductor type, and the like, and the measurement means differs depending on the type, but the measurement principle is expressed by a governing equation described later of the same dynamic model. Since this governing equation is an equation of motion of a spring / damper model, in order to obtain an accurate tilt value using the acceleration sensor 12, it converges to the value of the acceleration sensor 12 corresponding to the tilt when the remote control terminal 1 is stationary. Will cause a large delay in input.

  The digital TV 2 of the present embodiment detects when the user changes the tilt of the remote control terminal 1 and stops the remote control terminal 1 in order to enable input with little delay using the acceleration sensor 12, The convergence value of the acceleration sensor 12 (value for deriving the inclination of the remote control terminal 1) is estimated as soon as possible from the stationary time.

  FIG. 7 is a functional configuration diagram showing a functional configuration of the digital TV 2. The illustrated digital TV 2 includes a signal receiving unit 21, a signal separating unit 22, a signal data storage unit 23, a dynamic model parameter storage unit 25, a display control unit 26, and a display output unit 27.

  The signal receiving unit 21 receives input signals (information including key input information, sensor values of acceleration sensors, and sensor values of gyro sensors) transmitted from the remote control terminal 1. The signal separation unit 22 separates the input signal received by the signal reception unit 21 into acceleration sensor values, gyro sensor values, and ON / OFF state information of each key.

  The signal data storage unit 23 stores and holds various types of information separated by the signal separation unit 22. As a result, the signal data storage unit 23 changes the tilt of the remote control terminal 1 and stops the remote control terminal 1 until the acceleration sensor 12 stops and the sensor data of the acceleration sensor 12 and the gyro sensor 13. Is accumulated.

  As the signal data storage unit 23, for example, a storage device such as a memory or a hard disk is generally used. Further, the signal data storage unit 23 can be used not only in the case of being provided inside the digital TV 2 but also in an external storage device that can be electrically connected via a communication network such as the Internet or a telephone line.

  The dynamic model parameter storage unit 25 stores and holds numerical values of mathematical formula parameters used to estimate the inclination (posture) of the remote control terminal 1 from the moment the remote control terminal 1 is stopped. The display control unit 26 includes a state determination unit 261, a processing unit 262, and an icon selection unit 263.

  The state determination unit 261 detects when the user changes the tilt of the remote control terminal 1 and stops the remote control terminal 1. Specifically, the state determination unit 261 determines the following three states using sensor information transmitted from the remote control terminal 1 in real time when the user is operating the remote control terminal 1.

1. State A: State in which the user changes the inclination of the remote control terminal 1 and the acceleration sensor value also changes. State B: State in which the user stops the remote control terminal 1 and the acceleration sensor value has not converged. State C: A state where the user stops the remote control terminal 1 and the acceleration sensor value converges to an angle corresponding to the inclination. The processing unit 262 performs each process according to the determined state. Specifically, when the determined state is state B, the processing unit 262 receives the sensor information (data in the signal data storage unit 23) received in real time from when the user stopped the remote control terminal 1 and the parameters. The convergence value of the acceleration sensor 12 is estimated using the data in the storage unit 25. Further, the processing unit 262 derives the inclination of the remote control terminal 1 using the convergence value of the acceleration sensor 12.

  The icon selection unit 263 selects any icon according to the derived inclination. The display output unit 27 displays a menu (see FIGS. 2 and 3) corresponding to the result obtained by the display control unit 26. In the present embodiment, the icon selected by the display control unit 26 is presented to the user.

  For the digital TV 2 described above, for example, a general-purpose computer system including a CPU, a memory, an external storage device such as an HDD, an input device, and an output device can be used. In this computer system, each function of the digital TV 2 is realized by the CPU executing a program for the digital TV 2 loaded on the memory. This program may be recorded on a recording medium readable by the computer system.

  Next, the processing of this embodiment will be described.

FIG. 8 shows changes in the sensor value of the acceleration sensor 12 that occur when the icon to be selected is changed from the “5” icon to the “1” icon. FIG. 9 shows the change in the sensor value of the gyro sensor 13 that occurs when the icon to be selected is changed from the “5” icon to the “1” icon, as in FIG. 8. In the unit of FIG. 8, the horizontal axis is time (ms), and the vertical axis is the sensor value (mm / s 2 ) of the acceleration sensor 12. The unit of FIG. 9 is the time (ms) on the horizontal axis and the sensor value (dps) of the gyro sensor 13 on the vertical axis.

  From FIG. 8, the sensor value of the acceleration sensor 12 changes at the moment when the user operates the remote control terminal 1 (state C → state A or state B), and then the sensor value of the acceleration sensor 12 stops the remote control terminal 1. It can be seen that a convergence value corresponding to the inclination is obtained (state A or state B → state C).

  Further, from FIG. 9, as soon as the user starts operating the remote control terminal 1, the sensor value of the gyro sensor 13 changes (state B or state C → state A), and then the remote control terminal 1 is stopped. In addition, it can be seen that the sensor value hardly vibrates (state A → state B or state C). As a result, the moment when the user stops the remote control terminal 1 can be detected.

  FIG. 10 is a combination of FIG. 8 and FIG. From FIG. 10, there is a difference between the time when the user stops the remote control terminal 1 with the gyro sensor 13 and the time when the acceleration sensor 12 converges to a convergence value corresponding to the inclination of the remote control terminal 1. (State B part). When only the acceleration sensor 12 is used, the time in the state B leads to poor response on the digital TV 2 side with respect to the user's operation, and the user feels that it is difficult to operate and feels stress. Furthermore, since it is not easy to distinguish between the state A and the state B in the acceleration sensor 12, it is difficult to model with a dynamic model.

  Therefore, as a means for discriminating between the state A and the state B as described above, the present embodiment introduces the gyro sensor 13 to extract only the state B that is easily modeled, and the convergence of the acceleration sensor 12 in the state B. Estimate the value. Hereinafter, a process for estimating the convergence value of the acceleration sensor 12 performed by the display control unit 26 of the digital TV 2 will be described.

  FIG. 11 is a flowchart showing processing of the display control unit 26. First, the state determination unit 261 of the display control unit 26 monitors the signal data storage unit 23, and sensor information received from the remote control terminal 1 (sensor value of acceleration sensor, sensor value of gyro sensor) is stored in the signal data storage unit 23. It is checked whether or not it has been stored (S101). When the signal receiving unit 21 receives an input signal transmitted from the remote control terminal 1, the signal separating unit 22 separates the received input signal and stores it in the signal data storage unit 23.

  When the sensor information is stored in the signal data storage unit 23 (S102: YES), the state determination unit 261 determines whether the current state is any of the state A, state B, or state C (S103, S104). ).

That is, the state determination unit 261 determines using the following equation 1 using the sensor value of the gyro sensor 13 as a method of detecting that the user has stopped from the operation of changing the tilt of the remote control terminal 1.

  However, Sgnow and Sgk use only values near the reference value Sgbase when the gyro sensor is stationary.

  The state determination unit 261 calculates the value of the left side of Equation 1 using the sensor values of the gyro sensor 13 accumulated in time series in the signal data storage unit 23, and determines the calculated value of the left side and the gyro sensor stationary on the right side. Is compared with the threshold (Thresholdg). When the value on the left side is equal to or greater than the threshold value on the right side, the state determination unit 261 determines that the state is A (a state in which the user changes the inclination of the remote control terminal 1 and the acceleration sensor value also changes).

On the other hand, when the value on the left side is smaller than the threshold value on the right side (S103: state BorC), the state determination unit 261 determines whether or not the acceleration sensor 12 has converged using Equation 2 below.

  The state determination unit 261 calculates the value of the left side of Equation 2 using the sensor values of the acceleration sensor 12 accumulated in time series in the signal data storage unit 23, and determines the convergence value of the calculated left side and acceleration sensor of the right side. The threshold value (Thresholda) is compared (S104). When the value on the left side is greater than or equal to the threshold value on the right side, state determination unit 261 determines that the state is B (the state where the user has stopped remote control terminal 1 and the acceleration sensor value has not converged). On the other hand, when the value on the left side is smaller than the threshold value on the right side, it is determined that the state is C (a state where the user stops the remote control terminal 1 and the acceleration sensor value converges to an angle corresponding to the inclination).

  Next, processing corresponding to each state performed by the processing unit 262 of the display control unit 26 will be described. In the case of state A (S103: state A), the sensor value of the acceleration sensor 12 changes due to an external force accompanying the user's operation of the remote control terminal 1. The user's operation is not necessarily the same, and it is difficult to detect the applied external force. Therefore, in the case of state A, no processing is performed, and the process returns to S101.

  In the case of the state C (S104: state C), since the sensor value of the acceleration sensor 12 has already converged, the inclination is derived using the convergence value (S107). The convergence value indicates the value (acceleration in each axis direction) of the acceleration sensor in the state C in FIG.

  Further, the following formula is used to derive the pitch direction inclination of the remote control terminal 1 from the converged acceleration in each axis direction. Gravitational acceleration is a proportionality constant.

Pitch direction inclination = arcsin (x-axis acceleration sensor value / gravity acceleration)
Next, the process (S105) for estimating the convergence value of the acceleration sensor 12 in the state B (S104: state B) will be described. From the moment when the state B is reached, the acceleration sensor 12 of the remote control terminal 1 starts to converge toward an angle corresponding to the inclination. At this time, the change in the sensor value of the acceleration sensor 12 until the convergence can be expressed as a dynamic model of a spring / damper as the characteristic of the acceleration sensor 12.

That is, after the user stops the remote control terminal 1, the vibration phenomenon of the acceleration sensor 12 is expressed by a dynamic model of a spring / damper model in which no external input other than gravity exists. At this time, the governing equation of the dynamic model of the acceleration sensor 12 after the user stops the remote control terminal 1 is expressed by the following Equation 3.

And the change of the sensor value by the spring damper model in the state B, which is a general solution of Expression 3, can be expressed by Expression 4 below. The convergence value of the acceleration sensor 12 can be estimated by deriving the unknown parameter of Equation 4 using the sensor value of the acceleration sensor 12 accumulated in time series in the signal data accumulation unit 23.

The unknown parameters A, B, C, D, and g of Equation 4 that pass through the plurality of sensor values of the acceleration sensor 12 acquired after detecting the state B are determined using the following least square method.

  At this time, an unknown parameter satisfying Expression 6 is obtained. Since Equation 5 is a nonlinear equation, the solution of Equation 6 may not be obtained. Here, a method for obtaining an approximate solution using the Newton-Raphson method is used. The Newton-Raphson method is described below.

"New Mathematical / Engineering Library [Mathematics] 1, Numerical Methods for Science and Engineering", Jiro Mizushima, Soichiro Yanase, Mathematical Engineering Co., Ltd.

  An approximate solution can be obtained by repeatedly calculating the recurrence formula of Formula 7, performing a predetermined number of iterations, and then terminating the calculation. The unknown parameter g obtained here is an estimated value of the convergence value to be obtained. The processing unit 262 derives the inclination of the remote control terminal 1 based on the estimated value (S107). That is, the inclination is calculated using the above-described equation (“inclination in the pitch direction”).

  And the icon selection part 263 of the display control part 26 selects the icon corresponding to the inclination of the remote control terminal 1 derived | led-out from the convergence value of the sensor value of the acceleration sensor 12, with reference to the table | surface shown in above-mentioned FIG. The identification information (here, the icon number) of the selected icon is sent to the display output unit 27 (S108). Accordingly, the display output unit 27 generates and displays an icon selection screen (see FIG. 2) in which the color of the selected icon is changed, and presents to the user which icon is selected. Thereby, the delay time of the response on the digital TV 2 side in the period of the state B can be reduced.

  In the digital TV 2 of the present embodiment described above, the state determination unit 261 that detects when the user changes the tilt and stops the remote control terminal 1, and the convergence value of the acceleration sensor 12 (the remote control terminal 1 as soon as possible from the standstill). A processing unit 262 for estimating a value for deriving the slope of (). Thereby, in this embodiment, the response of the digital TV 2 accompanying the input operation for changing the tilt of the user's remote control terminal 1 can be speeded up, and a comfortable input operation with reduced wasteful waiting time at the time of operation can be performed. Can be realized. That is, according to the present embodiment, the user can immediately use the operation log without collecting the operation log, and can improve the response of the digital TV 2 to the user input operation.

  In the present embodiment, as a method for detecting that the user has stopped the remote control terminal 1, the gyro sensor 13 is incorporated in the remote control terminal 1 and the sensor information of the gyro sensor 13 is used. The gyro sensor 13 has the characteristic of taking the same sensor value in any posture when the remote control terminal 1 is stationary, and the sensor response to the operation of the remote control terminal 1 is fast. By utilizing such characteristics of the gyro sensor 13, in the present embodiment, the response of the digital TV 2 accompanying the input operation for changing the tilt of the user's remote control terminal 1 can be made faster.

  In addition, this invention is not limited to the said embodiment, Many deformation | transformation are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 1 Remote control terminal 11 Key state detection part 12 Acceleration sensor 13 Gyro sensor 14 Microcomputer part 15 Transmission part 2 Digital TV
DESCRIPTION OF SYMBOLS 21 Signal receiving part 22 Signal separation part 23 Signal data storage part 25 Dynamic model parameter storage part 26 Display control part 261 State determination part 262 Processing part 263 Icon selection part 27 Display output part

Claims (8)

  1. An information processing device that determines input information based on information transmitted from an input device having an acceleration sensor that measures the tilt of the input device and a stationary detection sensor that detects that the input device is stationary.
    Using the stationary detection sensor information transmitted from the input device, state determination means for detecting when the user has stopped the input device,
    An information processing apparatus comprising: an estimation unit configured to estimate a convergence value of the acceleration sensor using acceleration sensor information transmitted from the input device when the state determination unit detects a stationary state.
  2. The information processing apparatus according to claim 1,
    A storage device that stores the acceleration sensor information transmitted from the input device in time series;
    The estimation means estimates a convergence value of the acceleration sensor by calculating a solution of an equation indicating a change in acceleration sensor information by a dynamic model using the acceleration sensor information stored in the storage device. Information processing apparatus.
  3. An input information determination method for determining input information based on information transmitted from an input device having an acceleration sensor that measures the inclination of the input device and a stationary detection sensor that detects that the input device is stationary.
    Information processing device
    Using the stationary detection sensor information transmitted from the input device, a state determination step for detecting when the user stops the input device;
    An input information determination method characterized by performing an estimation step of estimating a convergence value of the acceleration sensor using the acceleration sensor information transmitted from the input device when the stationary time is detected in the state determination step. .
  4. The input information determination method according to claim 3,
    The information processing device has a storage unit that stores the acceleration sensor information transmitted from the input device in time series,
    The estimating step uses the acceleration sensor information stored in the storage unit to estimate a convergence value of the acceleration sensor by calculating a solution of an equation indicating a change in acceleration sensor information by a dynamic model. The input information determination method.
  5. Input that determines input information based on information transmitted from an input device that includes an acceleration sensor that measures the tilt of the input device and a stationary detection sensor that detects that the input device is stationary, executed by the information processing device An information determination program,
    In the information processing apparatus,
    Using the stationary detection sensor information transmitted from the input device, a state determination step for detecting when the user stops the input device;
    An input information determination comprising: executing an estimation step of estimating a convergence value of the acceleration sensor using the acceleration sensor information transmitted from the input device when the stationary state is detected in the state determination step. program.
  6. An input information determination program according to claim 5,
    The information processing device has a storage unit that stores the acceleration sensor information transmitted from the input device in time series,
    The estimating step uses the acceleration sensor information stored in the storage unit to estimate a convergence value of the acceleration sensor by calculating a solution of an equation indicating a change in acceleration sensor information by a dynamic model. An input information determination program.
  7. Input that determines input information based on information transmitted from an input device that includes an acceleration sensor that measures the tilt of the input device and a stationary detection sensor that detects that the input device is stationary, executed by the information processing device A recording medium on which an information determination program is recorded,
    In the information processing apparatus,
    Using the stationary detection sensor information transmitted from the input device, a state determination step for detecting when the user stops the input device;
    An input information determination comprising: executing an estimation step of estimating a convergence value of the acceleration sensor using the acceleration sensor information transmitted from the input device when the stationary state is detected in the state determination step. A recording medium that records the program.
  8. A recording medium recording the input information determination program according to claim 7,
    The information processing device has a storage unit that stores the acceleration sensor information transmitted from the input device in time series,
    The estimating step uses the acceleration sensor information stored in the storage unit to estimate a convergence value of the acceleration sensor by calculating a solution of an equation indicating a change in acceleration sensor information by a dynamic model. A recording medium on which an input information determination program is recorded.
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