JP2010204724A - Input system and electric equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact input system accurately recognizing characters input by a user. <P>SOLUTION: A wearable input device 1 to be attached on a finger of a user is configured to detect a contact/separation between the finger wearing the input device and other body part of the same user, and to measure the movement of the finger wearing the input device by a triaxial acceleration sensor 18 for deriving the trajectory of a character or the like drawn on the other body part by using the finger of the user instead of a pen. Specifically, the wearable input device is configured to: apply a signal between electrodes 11a and 11b by an applying part 15, and to measure currents flowing through the body by a current sensor 13 located at the fingertip side of the electrodes; when the currents exceeding a threshold are measured, detect contact of the finger wearing the input device; when the currents equal to or below the threshold are measured, detect separation of the finger; extract only the trajectory when the contact of the finger is detected from the trajectory of the finger obtained from the acceleration measured by the triaxial acceleration sensor 18, and treats the trajectory as input from a user. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an input system and electrical equipment used in the input system.

  Conventionally, as an input system, an input system for inputting characters, graphics, and the like to an operation target device such as an information processing apparatus is known. In addition, this type of input system is an input system in which characters or figures expressed by a user using a stylus pen are input to an operation target device by specifying coordinates on a touch panel or tablet to which the stylus pen is applied. The system is known.

  In addition, assuming the simultaneous use of a plurality of users, an electrical signal is applied to the contact surface between the touch panel and the user, and when the user touches the contact surface, the electrical signal flows through the user's human body. An input system for identifying a user who touched is also known (see Patent Document 1).

  Moreover, as an input system using a human body, the electromagnetic information generated in accordance with the user's operation (tap operation) is detected, and the user's operation is identified based on the electromagnetic information. One that generates input information is known (see Patent Document 2).

  In addition, an input system (see Patent Document 3) that measures the movement trajectory of the user's finger and recognizes the character expressed by the user from the movement trajectory, and a touch pad and tact switch are provided on the ring attached to the index finger. An input system that allows a user to operate this with a thumb is also known (see Patent Document 4).

JP 2000-148396 A JP 2008-197801 A JP-T-2006-500680 JP 2006-302204 A

However, the conventional input system has the following problems.
For example, an input system using a touch panel or a tablet has a problem that it is difficult to reduce the size of the product because a touch panel or a tablet having a sufficient size as an area for writing characters and figures is necessary. In addition, if a tapered stylus pen is used, small characters can be written on the touch panel or tablet and the touch panel or tablet can be reduced in size, but the stylus pen can be easily lost, which is inconvenient for the user. was there.

In addition, the input system that detects the user's tap operation and generates the input information to the operation target device has a problem that it cannot be used for the purpose of expressing and inputting characters and figures.
In addition, in an input system in which a touch pad or tact switch is provided on the ring and the user operates this with the thumb, a small touch pad or tact switch attached to the index finger must be operated with the thumb. For the user, the operability is poor, and furthermore, since it is necessary to move the thumb finely and accurately, there is a problem that the thumb is burdened and is not suitable for inputting characters and figures.

  In addition, in the conventional input system that detects the movement trajectory of the user's finger and recognizes the character expressed by the user, the character is simply recognized from the movement trajectory of the user's finger that has moved in the space. There was a problem that the recognition accuracy of characters that could not be drawn with one stroke was poor.

  That is, in this system, whether the movement of the user's finger corresponds to the state where the pen is moved away from the paper surface, or the movement corresponding to the state where the pen is moved on the paper surface Therefore, the more complicated the character, the more difficult the user can recognize the character to be input.

  The present invention has been made in view of these problems, and is a miniaturizable input system that does not require a device for receiving writing of characters and figures typified by a touch panel and a tablet. It is an object of the present invention to provide an input system capable of accurately recognizing characters and figures and an electric device used in the input system.

  The input system of the present invention made to achieve such an object includes a trajectory measuring means for measuring a movement trajectory of a user's specific body part, and the user's specific body part by the user's physical motion, A specific body part is in contact with the other body part surface through the trajectory measuring means based on the detection means for detecting contact with the part surface and being separated from the other body part surface and the detection result of the detection means Input information generating means for generating input information to the operation target based on the information indicating the movement trajectory acquired by the contact trajectory acquiring means and the information indicating the movement trajectory acquired by the contact trajectory acquiring means. An input system comprising: (Claim 1).

  An example of the specific body part is a user's finger. In this input system, contact / separation of the specific body part with respect to another body part is detected as an operation corresponding to an action of releasing the pen from the paper surface or placing the pen on the paper surface. Then, by selectively acquiring the movement trajectory of the specific body part when the specific body part is in contact with another body part, the user draws characters and figures drawn on the other body part by physical exercise. Get the corresponding trajectory.

  Therefore, according to this input system, unlike the conventional system, it is not necessary to recognize a character from the stroke of a single stroke, and compared to the conventional system, the character, figure, or the like to be input by the user is accurately recognized. be able to.

  Note that the input information generation means can be configured to generate information representing a movement locus of the specific body part when the specific body part is in contact with another body part as input information to the operation target. .

  In addition, according to the input system of the present invention, since the user's palm or the like can be used as a substitute for a touch panel or a tablet, devices such as a tablet are unnecessary, and the input system can be made smaller than a conventional system. be able to. In addition, since the user's specific body part can be used instead of the pen, it is not necessary to use a stylus pen or the like that is easily lost. Therefore, according to the present invention, it is possible to provide a user with a highly convenient input system suitable for inputting characters, figures, and the like.

  By the way, the above-described input system includes an application unit that applies an electrical signal to the user's body, and a signal measurement unit that measures a physical quantity of the electrical signal that is applied by the application unit and propagates through the user's body. be able to. That is, the detection means is based on the measurement result of the signal measurement means that the specific body part of the user has come into contact with or separated from the surface of the other body part by the user's body movement. (Claim 2).

  The propagation path of the electric signal propagating through the user's body is changed by contacting / separating the two body parts of the user. If the propagation path changes, the voltage and current at the physical quantity measurement point also change.

  For this reason, if an electrical signal is applied to the user's body and the physical quantity of the electrical signal propagating through the user's body is measured, the user's specific body part is moved to the surface of the other body part of the user by the user's body movement. It is possible to detect contact and separation from other body part surfaces.

  If the input system is configured to detect contact / separation of a specific body part by such a method, the configuration for detecting contact / separation can be simplified, and as a result, the input system is It can be downsized.

  Moreover, the above-mentioned application means can be specifically configured as follows. That is, the applying means is provided along the conductor path on the surface of the user's body part where a closed and closed conductor path is formed by contact through the body surface between the user's specific body part and another body part. It has a pair of application electrodes to be worn, and can be configured to apply an electrical signal to a body part sandwiched between the pair of application electrodes.

  Corresponding to such a configuration of the applying means, the signal measuring means can be specifically configured as follows. That is, when the specific body part and another body part contact each other, the signal measuring means has the pair of pairs in a state along which the contact point between the specific body part and the other body part is interposed in the path along the conductor path. Of the first ring-closing formation part as a body part sandwiched between the application electrodes and the second ring-closing formation part as a body part sandwiched between the pair of application electrodes without passing through the contact point, the first ring closure It can be configured to be mounted on the surface of the formation site and measure the physical quantity of the electrical signal generated at the mounting site (Claim 3).

  The body part in which the conductor path is formed includes the first ring-closing formation part as the body part sandwiched between the pair of application electrodes that the application unit has via the contact point, and the application unit has no contact point. It is divided into a second ring-closing formation site as a body part sandwiched between a pair of application electrodes, but when the specific body part is separated from other body parts, there are two body parts corresponding to the first ring-closing formation part. The electrical signal applied between the pair of application electrodes by the application means basically propagates through the first ring-closing formation site except for some leakage signals. There is no.

  On the other hand, in the state where the specific body part is in contact with another body part, the two body parts corresponding to the first ring-closing formation part are in a state of being connected to each other. Will be applied.

Therefore, if the physical quantity of the electrical signal is measured by the signal measuring means, the contact / separation of the specific body part can be detected as a result.
Note that the signal measuring means can be configured to measure the current of the attachment site as the physical quantity. In this case, the detection means detects contact when the current measurement value (effective value in the case of an AC signal) by the signal measurement means exceeds the reference value, and the current measurement value by the signal measurement means falls below the reference value. And it can be set as the structure which detects separation.

  Further, the signal measuring means may be configured to measure the voltage of the attachment site as the physical quantity. For example, the signal measurement means has a measurement electrode at a voltage measurement point, and measures the voltage generated between the reference application electrode and the measurement point with reference to the application electrode of the application means. The voltage at the mounting site can be measured.

  Specifically, the signal measuring means includes a measuring electrode in a path along the conductor path without passing through a contact point between the specific body part and another body part, out of a pair of application electrodes included in the applying means. The voltage measurement between the application electrode adjacent to the electrode and the measurement electrode can be performed. In this case, when the voltage measurement value by the signal measurement means (effective value in the case of an AC signal) exceeds the reference value, the detection means detects contact, and when the voltage measurement value by the measurement means falls below the reference value It can be configured to detect the separation.

  In addition, when an AC signal is applied as the electrical signal by the application unit, the signal measurement unit may be configured to measure a phase delay of the electrical signal generated at the mounting site with respect to the AC signal applied by the application unit. . In this case, the detection means is configured to detect contact when the phase delay measured by the signal measurement means exceeds the reference value, and detect separation when the phase delay measured by the measurement means falls below the reference value. be able to.

  The input system has a pair of measurement electrodes mounted along the conductor path as means corresponding to the application means and the signal measurement means, and applies an electric signal between the measurement electrodes. Further, an impedance measuring means for measuring the impedance between the body parts sandwiched between the pair of measuring electrodes may be provided (claim 4).

  In this case, the detection means is based on the measurement result of the impedance measurement means, and that the specific body part of the user has come into contact with and separated from the surface of the other body part by the user's body movement. It can be configured to detect. More specifically, the detecting means detects contact when the impedance measured by the signal measuring means falls below the reference value, and detects the separation when the impedance measured by the signal measuring means exceeds the reference value. can do.

  The impedance between the electrodes for measurement (resistance when the applied electrical signal is a direct current signal) changes due to the contact / separation of the specific body part. Therefore, if the input system is configured in this way, Contact and separation to other body parts can be detected.

  In addition, if the contact and separation are detected in this way, the detection principle is simple, so that the input system can be made simple, and as a result, the input system can be miniaturized.

  In addition, in the input system, the contact trajectory acquisition unit selectively selects a movement trajectory measured when the contact is detected by the detection unit from the movement trajectories measured by the trajectory measurement unit. By extracting the information, the information representing the movement locus of the specific body part when the specific body part is in contact with the surface of another body part can be obtained through the trajectory measuring means. .

  Further, the input information generating means is information representing the movement trajectory of this period for each period from detection of contact by the detection means to detection of separation by the detection means for a predetermined time. Thus, the input information can be generated based on the information representing the movement trajectory acquired by the contact trajectory acquisition means.

  In order to accurately recognize the characters and figures drawn by the user, whether the user has separated a specific body part while writing one character or figure, or the user has finished drawing one character or figure and specified Although it is necessary to grasp whether the body part is separated, if the input information generation means is configured in this way, each time the user finishes writing one character or figure, the input information is based on the movement trajectory so far. Therefore, the recognition accuracy of characters and figures is improved.

  Moreover, although the means for recognizing a character and a figure may be provided in an operation target apparatus, it is preferable when it is provided in the said input system. That is, the input information generation unit recognizes a character expressed by the movement of the specific body part of the user based on the information indicating the movement locus acquired by the contact locus acquisition unit, and uses the recognized character as the input information. It is preferable that the information to be expressed is generated (claim 7).

Thus, if an input system is comprised, even if it does not provide a character recognition function in the operation object apparatus, the character which the user expressed by the physical exercise | movement can be input into the operation object apparatus.
In addition, the input information generation unit is configured to display a graphic pattern expressed by the movement of the specific body part of the user based on the information indicating the movement trajectory acquired by the contact trajectory acquisition unit (the graphic here also includes “character”). And a command corresponding to the recognized graphic pattern is generated as input information to the operation target in accordance with a predetermined relationship between the graphic pattern and the command (claims). 8).

As described above, if the input system is configured, it is not necessary to provide the operation target device with a function for recognizing an input graphic or a function for converting a recognized graphic into a command, which is convenient.
Moreover, although the above-mentioned input system may be comprised with a single apparatus, when a product size becomes large too much with a single apparatus, it may be comprised with a some apparatus.

In addition, in configuring the input system, the electrical device attached to the user's body can be specifically configured as follows.
That is, the electrical equipment used by being mounted on the user's body includes an operation measuring means for measuring a physical quantity capable of deriving a movement locus of the user's specific body part, and the user's specific body part by the user's physical motion Detection means for detecting that the user has touched the surface of another body part and that the user has moved away from the surface of the other body part, and a physical quantity at each time measured by the motion measurement means, and a detection result of the detection means at the time And an output means for outputting in association with each other (claim 9). Moreover, as an operation | movement measurement means, an acceleration sensor can be mentioned, for example.

  If the movement track of the specific body part of the user is derived from the physical quantity measured by the motion measurement unit on the side receiving the output of the output unit by configuring the electric device in this way, the movement track and detection of each time are detected. Based on the detection result of the means, the information representing the movement locus of the specific body part when the specific body part is in contact with the surface of another body part can be obtained, and based on the information representing the movement locus, Input information to the operation target can be generated.

  In addition, the electrical apparatus may include the above-described application unit and signal measurement unit, or impedance measurement unit, and may be configured to detect contact / separation of a specific body part by the above-described method. -Claim 12).

It is the permeation | transmission perspective view (a) of the body-mounted input device 1, and explanatory drawing (b) showing the arrangement | positioning aspects, such as an electrode. 1 is a schematic cross-sectional view of a body-mounted input device 1. FIG. It is explanatory drawing regarding the usage example of the body-mounted input device. It is explanatory drawing regarding the principle of operation of the body-worn type input device. 3 is an equivalent circuit diagram of a measurement system in the body-mounted input device 1. FIG. 2 is a block diagram illustrating a detailed configuration of the body-mounted input device 1 and the remote operation system 100. FIG. It is a flowchart showing the process which the analysis part 21 performs. It is a flowchart showing the process which the analysis part 21 performs (1st modification). It is a flowchart showing the process which the analysis part 21 performs (2nd modification). It is a block diagram (a) showing the structure of the body-mounted input device 3, and explanatory drawing (b) showing the arrangement | positioning aspect of each electrode. 3 is an equivalent circuit diagram of a measurement system in the body-mounted input device 3. FIG. FIG. 4 is a block diagram (a) showing the configuration of the body-mounted input device 4 and an explanatory diagram (b) showing the determination principle of finger contact / separation in the body-mounted input device 4. FIG.

Embodiments of the present invention will be described below with reference to the drawings.
[First embodiment]
FIG. 1A is a transparent perspective view illustrating a schematic configuration of the body-mounted input device 1 according to the present embodiment, and FIG. 1B illustrates an arrangement mode of electrodes and the like in the body-mounted input device 1. FIG. 2A and 2B are schematic cross-sectional views of the body-mounted input device 1.

  As shown in FIG. 1, a body-worn input device 1 according to the present embodiment is worn on a user's finger, and includes a pair of application electrodes 11a and 11b configured by annular electrodes and a current sensor 13. These are arranged in parallel with each other at a predetermined interval along the axis of the finger to be worn. Specifically, the current sensor 13 (specifically, the current transformer 13a constituting the current sensor 13) is a physical device type in a positional relationship arranged in an external region of the region P surrounded by the pair of application electrodes 11a and 11b. It is provided in the input device 1.

  In FIG. 1B, the current sensor 13 is disposed closer to the distal end side of the finger than the pair of application electrodes 11a and 11b, but closer to the base side of the finger than the pair of application electrodes 11a and 11b. It may be arranged.

  The pair of application electrodes 11a and 11b and the current sensor 13 are provided in a ring main body 10 as an annular body constituting the outer shape of the body-mounted input device 1, in a state insulated from the ring main body 10. It is integrated. Further, the application electrodes 11a and 11b have inner surfaces facing the inner side of the ring with respect to the ring body 10 so that the body-mounted input device 1 is in contact with the user's body surface (finger surface) when the body-mounted input device 1 is worn on the finger. In the exposed state, it is stored in the ring main body 10.

  The current sensor 13 uses a magnetic field generated by a current flowing in the axial direction of the body part (finger) to which the body-mounted input device 1 is worn by applying a signal (voltage application) through the application electrodes 11a and 11b. The current flowing in the axial direction through the body part is measured.

  Specifically, the current sensor 13 includes a current transformer 13a (see FIG. 6) in which a coil is wound around a core, and is surrounded by the current transformer 13a based on a voltage generated at both ends of the coil of the current transformer 13a by electromagnetic induction. The current flowing in the axial direction through the body part (finger) is measured.

  The current sensor 13 is configured in this way because the AC signal is applied through the application electrodes 11a and 11b in the body-mounted input device 1 of the present embodiment. However, a DC signal may be applied between the application electrodes 11a and 11b. In this case, the current sensor 13 can be configured using a Hall element. Specifically, the current sensor 13 can be a sensor in which a Hall element is arranged in the cut of the annular core having a cut, and a magnetic field generated between both ends of the core constituting the cut acts on the Hall element. By utilizing this, it is possible to make a configuration for measuring the current flowing in the axial direction through the body part (finger).

  Subsequently, before describing the detailed configuration of the body-mounted input device 1, the method of use and the operation principle of the body-mounted input device 1 will be described. FIG. 3 is a diagram illustrating an example of use of the body-mounted input device 1.

  As shown in FIG. 3A, the body-mounted input device 1 according to the present embodiment is a finger on which the user wears the body-mounted input device 1 and is not a finger on which the body-mounted input device 1 is worn. The trajectory of the character or figure can be input to the external device 110 to the extent that a character or figure is drawn on the body part (such as the palm of the opposite side) (hereinafter referred to as a body-mounted input device). The finger to which 1 is attached is simply referred to as “input device attachment finger”).

  That is, the body-mounted input device 1 according to the present embodiment has a function of measuring the movement trajectory of the input device mounting finger, and the tip of the input device mounting finger is in contact with / separated from other body parts of the same user. This function identifies the trajectory of characters and figures drawn by the user on the body (palm etc.) with the input device wearing finger.

  This point will be described in detail. The body-mounted input device 1 according to the present embodiment applies an AC signal between the application electrodes 11 a and 11 b through the application unit 15 and measures a current flowing through the body through the current sensor 13. By doing this, it is detected that the tip of the input device wearing finger is in contact with / separated from other body parts of the same user.

  FIG. 4 is a diagram for explaining the operating principle of the body-mounted input device 1. As shown in the left diagram of FIG. 4, in the state where the input device wearing finger and the other body part are separated from each other, even if a signal is applied between the application electrodes 11a and 11b, the applied signal is basically applied. The current measured value in the current sensor 13 becomes zero only by flowing through the body part (region P shown in FIG. 1) surrounded by the electrodes 11a and 11b.

  On the other hand, when the input device wearing finger comes into contact with another body part, as shown in the right diagram of FIG. 4, a closed conductor path having a closed ring shape is formed on the user's body, and the current sensor 13 is And a contact point with other body parts are electrically sandwiched between the application electrodes 11a and 11b. For this reason, in a state where the input device wearing finger is in contact with another body part, an applied signal flows to the measurement point of the current sensor 13, and the current measurement value (effective value) of the current sensor 13 is greater than zero. .

  For example, considering the case where the index finger of the right hand, to which the body-mounted input device 1 is mounted, is brought into contact with the palm of the left hand due to the user's physical movement, in this case, the application electrode 11b on the index finger of the right hand A closed conductor path connected to the application electrode 11a on the index finger of the right hand is formed through the right arm, the trunk, the left arm, and the palm of the left hand.

  Therefore, when the index finger of the right hand contacts the palm of the left hand, the applied signal output from the application electrode 11b is transmitted to the application electrode 11a on the index finger of the right hand through the right arm, the trunk, the left arm, and the palm of the left hand. Thus, when the index finger of the right hand and the palm of the left hand are in contact with each other, the applied signal flows to the measurement point of the current sensor 13.

In the present embodiment, using such a phenomenon, it is detected based on the current measurement value of the current sensor 13 that the finger is touched / separated by the user's physical movement.
FIG. 5 is an equivalent circuit diagram of a measurement system in the body-mounted input device 1. However, in FIG. 5, the resistance of the body part through which the AC signal applied by the application electrodes 11 a and 11 b propagates is expressed by a lumped constant system for the sake of simplicity.

  Specifically, the resistance R11 shown in FIG. 5 represents the contact resistance between the application electrode 11a and the finger, and the resistance R12 represents the contact resistance between the application electrode 11b and the finger. Moreover, resistance R13 represents the electrical resistance of the body part surface corresponding to the area | region P (refer FIG. 1) enclosed by the electrodes 11a and 11b for application, and resistance R14 is from the measurement point by the current sensor 13 to the electrode 11a for application. Represents the electrical resistance of the body part surface.

  In addition, the resistance R15 represents the electrical resistance of the propagation path (inside the body) of the electrical signal propagating between the application electrodes 11a and 11b while wrapping closer to the current sensor 13 side than the application electrode 11a through the body.

  The resistor R16 is connected to the left hand palm from the application electrode 11b through the torso when the body-mounted input device 1 is worn on the right index finger and the index finger is brought into contact with the left hand palm. The electrical resistance of the body part is represented, and the resistance R17 represents the electrical resistance of the body part from the tip of the index finger that contacts the palm of the left hand to the measurement point of the current sensor 13. In addition, the switch SW1 represents contact / separation between the index finger and the palm, and the ammeter corresponds to the current sensor 13.

  5 shows the flow of the electric signal A that always propagates between the application electrodes 11a and 11b irrespective of the contact / separation between the index finger and the palm, and the broken line indicates the index finger and the index finger. The flow of the electric signal B propagating between the application electrodes 11a and 11b when the palm comes into contact is shown.

  When the body-worn input device 1 of this embodiment is attached to the index finger and the index finger is brought into contact with / separated from the opposite palm, the propagation mode of the electric signal changes as shown in FIG. The measured current value also changes. The body-mounted input device 1 according to the present embodiment detects that the finger has been touched / separated by the user's body movement based on the measured current value thus changed.

  In the above, the example in which the tip of the input device wearing finger is in contact with / separating from the palm of the opposite side has been described. However, the tip of the input device wearing finger is not limited to the palm of the opposite side, You may touch an arm etc. Even if such physical exercise is performed, a similar current change occurs in the vicinity of the current sensor 13, and it is possible to detect contact / separation of a finger on which the body-mounted input device 1 is mounted.

  That is, the user contacts / separates the body part on the terminal side (fingertip side) with respect to the other body part from the body part to which the body-worn input device 1 is attached, so that the body-worn input device 1 is moved. Information can be input to the external device 110 by using the information.

  Next, the detailed configuration of the body-mounted input device 1 and the configuration of the remote operation system 100 using the body-mounted input device 1 will be described with reference to FIG. FIG. 6 is a block diagram showing a detailed configuration of the body-mounted input device 1 and the remote control system 100.

  As shown in FIG. 6, the body-mounted input device 1 of the present embodiment includes a pair of application electrodes 11 a and 11 b, a current sensor 13, an application unit 15, a determination unit 17, and a triaxial acceleration sensor 18. A synchronization output unit 19, an analysis unit 21, and a wireless transmission unit 23.

  The application unit 15 applies an AC signal (AC voltage) to a body part sandwiched between the application electrodes 11a and 11b, and is driven by constant voltage drive or constant current drive. The applied signal may be a triangular wave, a sine wave, a rectangular wave, a sawtooth wave, or the like.

  In addition, as described above, the current sensor 13 measures the current flowing in the axial direction through the body part (finger) surrounded by the annular current transformer 13a, and inputs the current measurement value to the determination unit 17. is there. Specifically, the current sensor 13 of this embodiment is connected to both ends of the coil of the current transformer 13a in addition to the current transformer 13a, amplifies the difference between signals input from both ends of the coil, and outputs the amplified signal. A dynamic amplifying circuit 13b and a rectifier 13c that rectifies and converts the output signal (AC signal) of the differential amplifying circuit 13b into a DC signal, and outputs an output signal from the rectifier 13c as a current measurement value.

  In this way, the effective value of the voltage generated across the coil of the current transformer 13a is converted from the current sensor 13 into a measured current value (effective value) flowing in the axial direction of the body part to which the current transformer 13a is attached. Is output.

  In the current sensor 13 of this embodiment, since the difference between signals input from both ends of the coil is amplified, in-phase noise input from both ends of the coil can be cut. A filter that passes only a signal having the same frequency as the signal applied between the application electrodes 11a and 11b is provided between the rectifier 13c and a noise signal that cannot be removed by the differential amplifier circuit 13b. It may be configured such that it can be removed. In addition, the current sensor 13 may be configured to perform synchronous detection using a signal applied by the applying unit 15 as a reference signal.

  Further, the determination unit 17 determines contact / separation with respect to another body part of the input device wearing finger based on the current measurement value input from the current sensor 13, and inputs the determination result to the synchronization output unit 19.

  Specifically, the determination unit 17 compares the current measurement value input from the current sensor 13 with a predetermined threshold value, and the current measurement value input from the current sensor 13 exceeds the predetermined threshold value. If it is determined that the input device wearing finger is in contact, a state determination value indicating that the input device wearing finger is in contact is input to the synchronous output unit 19 and input from the current sensor 13. When the measured current value is equal to or less than a predetermined threshold, it is determined that the input device wearing finger is separated, and a state determination value indicating that the input device wearing finger is separated, Input to the synchronization output unit 19.

  Further, the triaxial acceleration sensor 18 detects the acceleration in the x, y, and z axis directions orthogonal to each other generated in itself, and uses the detected triaxial component (x, y, z axis component) as an acceleration measurement value. As output. In this embodiment, this acceleration measurement value is input to the synchronization output unit 19. That is, the triaxial acceleration sensor 18 inputs a triaxial component of the acceleration of the finger to the synchronous output unit 19 in response to the movement of the finger wearing the input device.

  In addition, the synchronous output unit 19 associates the acceleration measurement value at each time input from the triaxial acceleration sensor with the determination result (the state determination value) of the determination unit 17 based on the current measurement value measured at that time. Thus, the measurement data including the acceleration measurement value and the state determination value at the time is input to the analysis unit 21 at each time.

  The analysis unit 21 sequentially records measurement data (data consisting of acceleration measurement values and state determination values) from the synchronization output unit 19 in the built-in memory 21a, and based on the measurement data group recorded in the memory 21a. Identify the trajectory of characters and figures represented by the user.

Specifically, the analysis unit 21 repeatedly executes the process shown in FIG. FIG. 7 is a flowchart showing a trajectory transmission process executed by the analysis unit 21.
When the trajectory transmission process shown in FIG. 7 is started, the analysis unit 21 first causes the user to contact the input device wearing finger with another body part based on the measurement data input from the synchronous output unit 19 (hereinafter, referred to as the following). It waits until it starts a contact operation | movement (S110).

  That is, in S110, the state determination value indicated by the latest measurement data is switched from the state determination value indicating that the input device mounting finger is separated to the state determination value indicating that the input device mounting finger is in contact. Wait until.

  When the contact operation is started (S110), the analysis unit 21 proceeds to S120, and performs a process (S120) of storing the measurement data input from the synchronous output unit 19 in the built-in memory 21a (S120). This is repeated until the wearing finger is separated from another body part for a predetermined time (S120, S130).

  When a state determination value indicating that the input device wearing finger is separated is continuously input from the synchronous output unit 19 for a predetermined time, the input device wearing finger is continuously separated from another body part for a predetermined time. (Yes in S130), the process proceeds to S140.

  In S140, the analysis unit 21 measures the measurement data stored in the memory 21a (that is, measurement data obtained in a period from when the contact operation is started until the input device wearing finger is separated for a predetermined time). Are converted into position coordinates with the position of the finger of the input device at the time when the contact operation is started as the origin (S140).

  Specifically, the acceleration measurement value (triaxial component of acceleration) indicated by the measurement data stored at each time accumulated in the memory 21a is second-order integrated in the time direction, whereby the acceleration measurement value at each time is input at each time. Conversion into position coordinates of the device wearing finger is performed (S140).

  When this processing is completed, the analysis unit 21 is measurement data obtained by converting the acceleration measurement value stored in the memory 21a into position coordinates, and the input device mounting finger is held for a predetermined time after the contact operation is started. A measurement data group in which a state determination value indicating that the input device wearing finger is in contact is extracted from the measurement data group obtained in the period until the separation. Thus, a measurement data group indicating the position coordinates of the input device wearing finger when the input device wearing finger is in contact with another body part is extracted (S150).

  Further, after this process is completed, only position coordinates are extracted from each measurement data extracted in S150, and time-series data of position coordinates indicated by each measurement data extracted in S150 is generated. Then, the time-series data of the position coordinates is transmitted to the external device 110 through the wireless transmission unit 23 (S160).

  By this operation, the analysis unit 21 inputs the trajectory data (time-series data of the above-described position coordinates) of characters and figures drawn by the user on the palm or the like through the input device wearing finger through the wireless transmission unit 23 to the external device 110. .

  On the other hand, the external device 110 includes a wireless reception unit 111 and a control unit 113, and receives data transmitted from the body-mounted input device 1 in a wireless form through the wireless reception unit 111. A process based on the received data is executed. For example, the external device 110 performs processing for displaying characters and figures drawn by the user on the display screen based on the time-series data of the position coordinates input from the body-mounted input device 1.

  The configuration of the body-mounted input device 1 according to the present embodiment has been described above. According to the body-mounted input device 1, the user wears the body-mounted input device 1 on a finger, and the input device The character or figure can be input to the external device 110 by drawing the character or figure by bringing the wearing finger into contact with the palm or the like.

  The body-mounted input device 1 does not require a tablet or a stylus pen, unlike a conventional device. Therefore, according to the present embodiment, it is possible to input characters and graphics to the external device 110 with a smaller device than before.

  Further, according to the present embodiment, unlike the conventional device, not only the user's movement trajectory is measured, but also the contact / separation of the finger with the input device with respect to another body part is detected, so that the pen is applied to the paper surface. The user's action corresponding to the moving or moving operation is detected, and the trajectory of characters and figures drawn by the user is obtained.

  Therefore, the user can easily input characters, figures, and the like that cannot be expressed with a single stroke to the external device 110. In other words, the trajectory data of characters and figures can be input to the external device 110 so that the external device 110 and other users can accurately recognize the characters and figures that the user is trying to input.

Therefore, according to the present embodiment, it is possible to provide a user with a highly convenient input device suitable for inputting characters, graphics, and the like.
By the way, the body-mounted input device 1 described above does not have to be configured as a single device, and generates the input data to the external device 110 by processing the measurement data group and the component 1a that outputs the measurement data. The component 1b to be separated may be separated. That is, the body-mounted input device 1 may be configured by a first device including the component 1a and a second device including the component 1b. In this case, the body-mounted input device 1 can be configured to transmit measurement data from the first device to the second device by wireless communication.

  Moreover, in the said Example, although it was set as the ring shape for mounting | wearing the finger | toe with the body-worn input device 1, the body-worn input device 1 may be made into a bracelet shape that can be enlarged and mounted on the arm. . In this case, all the fingers of the arm on which the body-mounted input device 1 is mounted perform the same function as the above-described input device mounted fingers.

  Further, in the body-mounted input device 1 of the present embodiment, it is possible to input characters and figures without using a tablet or the like, but as shown in FIG. It is also possible to perform operations such as character input by using a method using a conductive plate. Even if a conductor plate is held in the left hand as shown in FIG. 3B and a character is input with the right index finger as an input device wearing finger, the measurement system does not change from the equivalent circuit shown in FIG. Similar to the above embodiment, contact / separation of the input device mounting finger with respect to the conductor plate can be detected.

  In addition, in this embodiment, the analysis unit 21 may be configured to repeatedly execute the character recognition transmission process shown in FIG. 8 instead of the locus transmission process. FIG. 8 is a flowchart showing the character recognition transmission process. Here, the structure of the analysis part 21 which performs the said character recognition transmission process is demonstrated as a 1st modification of a present Example.

  When the character recognition transmission process is started, the analysis unit 21 first executes the processes of S110 to S150 in the same manner as the trajectory transmission process described above. Thus, a measurement data group representing the position coordinates of the input device wearing finger when the input device wearing finger is in contact with another body part is extracted from the measurement data group stored in the memory 21a.

  After this processing, the analysis unit 21 proceeds to S210, and recognizes the character input by the user through the input device wearing finger from the locus of the position coordinates indicated by the extracted measurement data group. Character recognition can be realized by evaluating the degree of coincidence between a locus pattern of a recognition target character prepared in advance and a locus pattern of position coordinates indicated by a measurement data group.

  After the process of S210, data representing the character recognition result is transmitted to the external device 110 through the wireless transmission unit 23 (S220). In this way, in the first modified example, information on the character expressed by the input device wearing finger is input to the external device 110.

  As the data representing the character recognition result, data representing the recognized character may be input to the external device 110. If character recognition fails, data indicating that character recognition has failed is displayed. What is necessary is just to transmit to the external device 110 as data showing the recognition result of the said character. In addition, if character recognition fails, data may not be transmitted to the external device 110 as an exception.

  Although the first modification has been described above, if the character recognition transmission process having such contents is executed by the analysis unit 21 instead of the locus transmission process, the body-mounted input device 1 is connected to the external device. The device 110 can function as an input device capable of inputting characters.

  In addition, according to the body-mounted input device 1, by detecting contact / separation with respect to other body parts of the input device mounting finger, it is possible to detect a user's action corresponding to an operation of putting a pen on or away from a paper surface. In addition, since the trajectory of the character or figure drawn by the user is obtained, the character input by the user through the input device wearing finger is recognized more accurately than in the case of recognizing the character from the trajectory of a single stroke as in the conventional device. be able to.

  In addition, the analysis unit 21 may be configured to repeatedly execute the command recognition transmission process shown in FIG. 9 instead of the locus transmission process and the character recognition transmission process. FIG. 9 is a flowchart showing command recognition transmission processing. Here, a configuration of the analysis unit 21 that executes the command recognition transmission process will be described as a second modification of the present embodiment.

  When the character recognition transmission process is started, the analysis unit 21 executes the processes of S110 to S150 in the same manner as the trajectory transmission process described above. Thus, a measurement data group representing the position coordinates of the input device wearing finger when the input device wearing finger is in contact with another body part is extracted from the measurement data group stored in the memory 21a.

  After this processing, the analysis unit 21 proceeds to S310, and recognizes the figure input by the user through the input device wearing finger from the locus of the position coordinates indicated by the extracted measurement data group. In addition, the figure here shall also include a character. Further, the recognition of the figure can be realized by evaluating the degree of coincidence between the locus pattern of the recognition target figure prepared in advance and the locus pattern of the position coordinates indicated by the measurement data group.

  When this processing is completed, the analysis unit 21 specifies a command to the external device 110 corresponding to the recognized graphic, and generates input data to the external device 110 representing this command. Then, the input data representing the generated command is transmitted to the external device 110 through the wireless transmission unit 23 (S320).

  As shown in the right diagram of FIG. 9, a table representing the correspondence between graphics and commands is registered in advance in the analysis unit 21, and the command recognition transmission process refers to this table in S310. Thus, the command corresponding to the recognized figure can be specified.

  The command recognition transmission process is a command that is predetermined as a command at the time of recognition failure, such as a command for causing the external device 110 to display a message prompting the user to input another graphic when the graphic recognition fails in S310. May be transmitted to the external device 110 through the wireless transmission unit 23. In addition, when the graphic recognition fails, the command transmission operation through the wireless transmission unit 23 may not be executed.

  Although the second modification has been described above, according to the body-mounted input device 1, the user operates the external device 110 to the extent that he / she draws a figure through the input device wearing finger, and the external device 110 converts the figure into a figure. The corresponding operation can be executed. Therefore, according to the second modification, the body-mounted input device 1 can be conveniently used as a remote controller for the external device 110.

In addition, according to the present embodiment, the input figure can be accurately recognized, so that an operation unintended by the user due to misrecognition can be avoided as much as possible.
The correspondence relationship between the body-mounted input device 1 described above and “Claims” is as follows.

  That is, the input system described in “Claims” corresponds to the body-mounted input device 1 of the present embodiment, and the application unit corresponds to the pair of application electrodes 11 a and 11 b and the application unit 15. Further, the signal measuring means corresponds to the current sensor 13, and in the case of the example shown in FIG. It corresponds to the body part extending to the palm and the body part from the tip of the index finger of the right hand that is in contact with the palm of the left hand to the application electrode 11a.

  In addition, the second ring-closing formation site corresponds to the body part of the region P surrounded by the application electrodes 11a and 11b, the detection unit corresponds to the determination unit 17, and the trajectory measurement unit is the triaxial acceleration sensor 18. This corresponds to the process of S140 executed by the analysis unit 21.

  The motion measuring means corresponds to the triaxial acceleration sensor 18, the output means corresponds to the synchronous output unit 19, the contact locus acquisition means corresponds to the processing of S150, and the input information generation means corresponds to S160 and S210. , S220, S310, S320.

  Moreover, in the said Example, although contact / separation of the input apparatus mounting finger was detected based on the current sensor 13, the voltage of the measurement point corresponding to the current sensor 13 is measured, or the impedance between the application electrodes 11a and 11b. The contact / separation of the input device wearing finger can also be detected by measuring (second and third embodiments).

[Second Example]
Next, the body-mounted input device 3 according to the second embodiment will be described. However, the body-worn input device 3 of the second embodiment is such that voltage measurement is performed instead of current measurement at the point where the current sensor 13 performs current measurement in the body-worn input device 1 of the first embodiment. It is. Therefore, in the following, regarding the body-mounted input device 3 of the second embodiment, the same components as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and description of these same components will be appropriately described. Omitted.

  FIG. 10A is a block diagram showing the configuration of the body-mounted input device 3 according to the second embodiment, and FIG. 10B shows the arrangement of the electrodes constituting the body-mounted input device 3. It is explanatory drawing which showed.

  The body-mounted input device 3 according to the present embodiment includes a pair of application electrodes 11a and 11b configured by annular electrodes, and a measurement electrode 33 configured by an annular electrode along the axis of a finger to be mounted. Thus, they are arranged in parallel with each other at a predetermined interval. In other words, the body-mounted input device 3 is configured to include the measurement electrode 33 instead of the current sensor 13.

  Like the current sensor 13, the measurement electrode 33 is provided in the body device type input device 2 in a positional relationship arranged in an external region of the region P surrounded by the pair of application electrodes 11a and 11b. Similar to the application electrodes 11a and 11b, the inner surface facing the inner side of the ring is exposed to the ring body 10 so that the body-mounted input device 3 comes into contact with the body surface (finger surface) of the user when the body-mounted input device 3 is worn on the finger. In this state, it is stored in the ring main body 10.

  The body-mounted input device 3 includes an application unit 15, a voltage measurement unit 35, a determination unit 37, a triaxial acceleration sensor 18, a synchronization output unit 19, an analysis unit 21, and a wireless transmission unit 23. 15, an AC signal is applied between the application electrodes 11 a and 11 b as in the first embodiment, while a voltage (effective value) generated between the application electrode 11 a and the measurement electrode 33 by the voltage measurement unit 35. ) And the voltage measurement value is input to the determination unit 37.

  Based on the voltage measurement value input from the voltage measurement unit 35, the determination unit 37 determines that the input device wearing finger is in contact when the voltage measurement value exceeds a predetermined threshold. When the voltage measurement value is equal to or smaller than the threshold value, it is determined that the input device wearing finger is separated, and the state determination value corresponding to the determination result is sent to the synchronous output unit 19 as in the first embodiment. input.

  The synchronization output unit 19 time-synchronizes the state determination value input from the determination unit 37 and the acceleration measurement value input from the triaxial acceleration sensor 18 and outputs the measurement data. The analysis unit 21 Based on this measurement data, the processes shown in FIGS. 7 to 9 are executed.

  FIG. 11 is an equivalent circuit diagram of the measurement system in the body-mounted input device 3 of the second embodiment. A resistance R21 shown in FIG. 11 represents a contact resistance between the application electrode 11a and the finger, a resistance R22 represents a contact resistance between the application electrode 11b and the finger, and a resistance R28 represents the measurement electrode 33. Represents the contact resistance between the finger and the finger.

  The resistance R23 represents the electrical resistance of the body part surface corresponding to the region P surrounded by the application electrodes 11a and 11b, and the resistance R24 is the region Q (FIG. 10) surrounded by the application electrode 11a and the measurement electrode 33. The resistance R25 represents the electrical resistance of a path through which a signal applied between the application electrodes 11a and 11b leaks to the measurement electrode 33 side through the inside of the body.

  In addition, the resistor R26 assumes a situation in which the body-mounted input device 3 is attached to the index finger of the right hand and the index finger is brought into contact with or separated from the palm of the left hand as in the first embodiment (see FIG. 5), and represents the electrical resistance of the body part from the application electrode 11b through the trunk to the palm of the left hand, and the resistance R27 is the body on which the measurement electrode 33 is mounted from the tip of the index finger that contacts the palm of the left hand. Represents the electrical resistance to the site. The voltmeter corresponds to the voltage measurement unit 35.

  The principle of contact / separation of the input device wearing finger in the second embodiment will be described with reference to this equivalent circuit diagram. The resistor R25 is used for measuring the signal applied between the application electrodes 11a and 11b through the inside of the body. Since it represents the electrical resistance of the path leaking to the electrode 33 side, it shows a very large resistance value with respect to other body parts, although it depends on the installation interval between the application electrode 11a and the measurement electrode 33. Therefore, in a state where the input device wearing finger is separated (switch SW2 is in an off state), the voltage measurement value Voff measured and output by the voltage measurement unit 35 is a value close to zero as much as possible. On the other hand, when a finger is in contact (switch SW2 is on), a signal flows through resistors R26 and R27 that are sufficiently smaller than resistor R25. Therefore, a voltage measurement value Von that is measured and output by voltage measurement unit 35. Becomes a value sufficiently larger than Voff.

  Therefore, in this embodiment, it is determined whether or not the input device wearing finger is in contact by determining whether or not the voltage measurement value input from the voltage measurement unit 35 exceeds a predetermined threshold value. It can be done.

In the present embodiment, an example in which an AC signal is applied to the application electrodes 11a and 11b from the application unit 15 has been described. However, a DC signal may be applied from the application unit 15 as in the first embodiment.
In the present embodiment, the voltage measurement unit 35 measures the voltage between the measurement electrode 33 and the application electrode 11a, and determines the contact / separation of the input device wearing finger from this measurement value. When applying an AC signal from the application unit 15, a phase measurement unit is provided in the body-mounted input device 3 instead of the voltage measurement unit 35. In this phase measurement unit, the application electrode 11a and the measurement electrode are provided. The phase delay of the AC signal input from the measurement electrode 33 with respect to the AC signal applied between the application electrodes 11a and 11b (ie, the delay direction is a positive value) May be measured.

  In this case, the determination unit 37 determines that the input device wearing finger is in contact when the measured value of the phase delay exceeds a predetermined threshold, and the measured value of the phase delay is equal to or less than the threshold. And it can be set as the structure which determines with the input device mounting finger having been separated.

[Third embodiment]
Next, the body-mounted input device 4 according to the third embodiment will be described. However, in the following, regarding the body-mounted input device 4 of the third embodiment, the same components as those of the above-described embodiment are denoted by the same reference numerals as those of the above-described embodiment, and these same configurations The description of the part is omitted as appropriate.

  FIG. 12A is a block diagram illustrating the configuration of the body-mounted input device 4 according to the third embodiment. The body-mounted input device 4 of the present embodiment measures the impedance between the annular electrodes 41a and 41b similar to the application electrodes 11a and 11b of the first embodiment and the pair of annular electrodes 41a and 41b. Based on the impedance measurement unit 45 that inputs the impedance measurement value to the determination unit 47 and the impedance measurement value (absolute value) input from the impedance measurement unit 45, the contact / separation of the input device wearing finger is determined, and the determination result is A determination unit 47 that inputs a corresponding state determination value to the synchronization output unit 19, a triaxial acceleration sensor 18, a synchronization output unit 19, an analysis unit 21, and a wireless transmission unit 23 are provided.

  In the body-mounted input device 4, the impedance measuring unit 45 applies an alternating current signal between the annular electrodes 41a and 41b and measures the current generated by the annular electrodes 41a and 41b, similarly to a known measuring instrument. Measure the impedance between.

  The impedance Zon measured by the impedance measuring unit 45 while the finger is in contact is applied without passing through the contact point between the input device wearing finger and another body part, as shown in FIG. The impedance Z1 of the path between the annular electrodes 41a and 41b through which the signal propagates, and the impedance Z2 of the path between the annular electrodes 41a and 41b through which the applied signal propagates through the contact point between the input device wearing finger and another body part, Is equal to the impedance Z1 · Z2 / (Z1 + Z2) when connected in parallel (Zon = Z1 · Z2 / (Z1 + Z2)). FIG. 12B is a diagram for explaining the principle of finger contact / separation in the body-mounted input device 4 of the third embodiment.

On the other hand, the impedance Zoff measured by the impedance measuring unit 45 in a state where the finger is separated is equal to the impedance Z1 (Zoff = Z1).
Therefore, there is an inequality Zoff> Zon between the impedance Zoff measured by the impedance measuring unit 45 with the finger being separated and the impedance Zon measured by the impedance measuring unit 45 with the finger being in contact. Is established.

  For the above reasons, the determination unit 47 determines that the input device wearing finger is separated when the impedance measurement value input from the impedance measurement unit 45 exceeds a predetermined threshold, and the voltage measurement value However, if it is equal to or less than the threshold value, it is determined that the input device wearing finger is in contact, and a state determination value corresponding to the determination result is input to the synchronous output unit 19.

  As described above, the body-worn input device 4 of the third embodiment has been described. However, the body-worn input device 4 can also detect contact / separation of other fingers on the body of the input device wearing finger, The user can obtain the trajectory of characters, figures, and the like written on the palm or the like using the input device wearing finger, not limited to one-stroke, and can provide a highly convenient input system to the user.

  The correspondence relationship between the body-mounted input device 4 of the third embodiment and the invention described in “Claims” is as follows. That is, the impedance measuring means according to claim 4 corresponds to the annular electrodes 41a and 41b and the impedance measuring section 45 of this embodiment, and the detecting means corresponds to the determining section 47.

  In the above example, the impedance is measured by applying an AC voltage between the annular electrodes 41a and 41b. However, the resistance as the impedance is measured by applying a DC voltage between the annular electrodes 41a and 41b. You may do it.

[Others]
As mentioned above, although the Example of this invention was described, this invention is not limited to the said Example, A various aspect can be taken. For example, in the body-mounted input device 1 according to the first embodiment, the application electrodes 11a and 11b and the application unit 15 are configured to be electrically independent from other components. 1 may be separated into an application side device including the application electrodes 11a and 11b and the application unit 15, and a measurement side device including other components.

  For example, the application side device including the application electrodes 11a and 11b and the application unit 15 may be attached to the index finger of the right hand, and the measurement side device including other components may be attached to the left hand as a bracelet. Since the circuit through the human body shown in FIG. 5 is configured, characters and figures can be input by drawing letters and figures on the palm of the left hand using the index finger of the right hand, and the same effect as in the first embodiment can be obtained. Obtainable.

  Further, in the body-mounted input devices 1, 3, and 4 of the above-described embodiments, the electrodes do not have to be annular electrodes, and may be ring-opened electrodes lacking a part of the ring, It may be an electrode of the shape.

  In addition, in order to stably operate the body-mounted input devices 1, 3, and 4, it is preferable that the electrode and the body part are in contact with each other with a sufficient area. For this reason, the electrode has a large surface area. Preferably employed. Further, a structure in which pressure is applied from the outside of the electrode may be adopted so that the electrode and the body surface are brought into close contact with each other.

  In the above embodiment, data is wirelessly output from the body-mounted input devices 1, 3, 4 to the external device 110, but the body-mounted input devices 1, 3, 4 are wired to the external device 110. It may be configured to output data.

DESCRIPTION OF SYMBOLS 1, 3, 4 ... Body-mounted input device, 10 ... Ring main body, 11a, 11b ... Application electrode, 13 ... Current sensor, 13a ... Current transformer, 13b ... Differential amplification circuit, 13c ... Rectifier, 15 ... Application part , 17, 37, 47 ... determination unit, 18 ... triaxial acceleration sensor, 19 ... synchronous output unit, 21 ... analysis unit, 21a ... memory, 23 ... wireless transmission unit, 33 ... measurement electrode, 35 ... voltage measurement unit, 41a, 41b ... annular electrode, 45 ... impedance measuring unit, 100 ... remote control system, 110 ... external device, 111 ... wireless receiver, 113 ... control unit

Claims (12)

A trajectory measuring means for measuring a movement trajectory of the specific body part of the user;
Detecting means for detecting that the specific body part of the user is in contact with and separated from the surface of the other body part of the user by the user's physical movement;
Based on the detection result of the detection means, through the trajectory measurement means, contact trajectory acquisition that acquires information representing the movement trajectory of the specific body part when the specific body part is in contact with the surface of the other body part. Means,
Based on information representing the movement trajectory acquired by the contact trajectory acquisition means, input information generation means for generating input information to the operation target;
An input system comprising: Applying means for applying an electrical signal to the user's body;
Signal measuring means for measuring a physical quantity of an electrical signal applied by the applying means and propagating through the user's body;
With
The detection means is based on the measurement result of the signal measurement means that the specific body part of the user is in contact with the surface of the other body part of the user by the body movement of the user and from the surface of the other body part. The input system according to claim 1, wherein separation is detected. The application means is arranged along the conductor path on the surface of the user's body part where a closed and closed conductor path is formed by contact through the body surface between the user's specific body part and another body part. A pair of application electrodes to be worn and configured to apply an electrical signal to a body part sandwiched between the pair of application electrodes,
When the specific body part and another body part are in contact with each other, the signal measuring unit is configured to pass the pair of contact points between the specific body part and the other body part in a path along the conductor path. Of the first ring-closing formation site as the body part sandwiched between the application electrodes, and the second ring-closing formation site as the body part sandwiched between the pair of application electrodes without passing through the contact point, the first The input system according to claim 2, wherein the input system is configured to be mounted on a surface of a ring-closing formation site and to measure a physical quantity of an electric signal generated in the mounting site. A pair attached along the conductor path to the surface of the user's body part where a closed conductor path is formed by contact between the specific body part of the user and another body part through the body surface. Impedance measuring means for measuring the impedance between body parts sandwiched between the pair of measurement electrodes by applying an electrical signal between the measurement electrodes,
The detection means is based on the measurement result of the impedance measurement means, and that the specific body part of the user has contacted the other body part surface of the user by the body movement of the user and the surface of the other body part. The input system according to claim 1, wherein separation is detected.   The contact trajectory acquisition means extracts the movement trajectory measured when the contact is detected by the detection means from the movement trajectory measured by the trajectory measurement means. The information representing the movement locus of the specific body part when the specific body part is in contact with the surface of the other body part is acquired through the means. The input system described. The input information generation means is information representing a movement trajectory during a period from when the contact is detected by the detection means to when the detection means detects the separation. The input system according to any one of claims 1 to 5, wherein the input information is generated based on information representing the movement locus acquired by the contact locus acquisition means. The input information generation means recognizes a character expressed by the movement of the specific body part of the user based on information representing the movement locus acquired by the contact locus acquisition means, and the recognition information is used as the input information. The input system according to any one of claims 1 to 6, wherein information representing a character that has been generated is generated. The input information generation means recognizes a graphic pattern expressed by the movement of the specific body part of the user based on information representing the movement trajectory acquired by the contact trajectory acquisition means, and determines a predetermined graphic pattern. The input system according to any one of claims 1 to 6, wherein a command corresponding to the recognized graphic pattern is generated as the input information according to a correspondence relationship between the command and the command. An electrical device that is used by being worn on a user's body,
An action measuring means for measuring a physical quantity capable of deriving a movement trajectory of the specific body part of the user;
Detecting means for detecting that the specific body part of the user is in contact with and separated from the surface of the other body part of the user by the user's physical movement;
An output unit that outputs the physical quantity at each time measured by the motion measurement unit in association with the detection result of the detection unit at the time;
An electrical apparatus comprising: Applying means for applying an electrical signal to the user's body;
Signal measuring means for measuring a physical quantity of an electrical signal applied by the applying means and propagating through the user's body;
With
The detection means is based on the measurement result of the signal measurement means that the specific body part of the user is in contact with the surface of the other body part of the user by the body movement of the user and from the surface of the other body part. The electrical device according to claim 9, wherein the separation is detected. The application means is arranged along the conductor path on the surface of the user's body part where a closed and closed conductor path is formed by contact through the body surface between the user's specific body part and another body part. A pair of application electrodes to be worn and configured to apply an electrical signal to a body part sandwiched between the pair of application electrodes,
When the specific body part and another body part come into contact with each other, the signal measuring means is configured to pass the pair of contact points between the specific body part and the other body part in a path along the conductor path. Of the first ring-closing formation site as a body part sandwiched between the application electrodes, and the second ring-closing formation site as a body part sandwiched between the pair of application electrodes without passing through the contact point, the first The electric device according to claim 10, wherein the electric device is mounted on a surface of a closed ring formation site and configured to measure a physical quantity of an electric signal generated in the mounting site. A pair attached along the conductor path to the surface of the user's body part where a closed conductor path is formed by contact between the specific body part of the user and another body part through the body surface. Impedance measuring means for measuring the impedance between body parts sandwiched between the pair of measurement electrodes by applying an electrical signal between the measurement electrodes,
The detection means is based on the measurement result of the impedance measurement means, and that the specific body part of the user has contacted the other body part surface of the user by the body movement of the user and the surface of the other body part. The electrical device according to claim 9, wherein the separation is detected.