CROSS REFERENCE TO PRIOR APPLICATION

This application is a National Stage Patent Application of PCT International Patent Application No. PCT/JP2017/018811 (filed on May 19, 2017) under 35 U.S.C. § 371, which claims priority to Japanese Patent Application No. 2016-145621 (filed on Jul. 25, 2016), which are all hereby incorporated by reference in their entirety.

TECHNICAL FIELD

The present technology relates to an information processing apparatus, an information processing method, and a program which can be applied to a wearable device.

BACKGROUND ART

In recent years, various wearable devices including glasses type and watch type have been developed. For example, Patent Literature 1 discloses a wristband type display control apparatus provided with a control unit, an input unit, a sensor unit, a storage unit, a communication unit, a display unit, and the like. Further, Patent Literature 2 discloses an electronic apparatus capable of attaining a long lifetime of a battery while suppressing power consumption of the apparatus.

CITATION LIST

Patent Literature

Patent Literature 1: Japanese Patent Application Laid-open No. 2015-125616

Patent Literature 2: WO 2009/008411

DISCLOSURE OF INVENTION

Technical Problem

These days, there is a growing demand for lower power consumption of electronic apparatuses such as wearable devices, in addition to downsizing and higher performance of those. To achieve this, for example, a detection of a user's significant gesture input with basic electric power is demanded.

In view of the circumstances as described above, an object of the present technology is to provide an information processing apparatus, an information processing method, and a program which can perform a detection of a change in state of a user with basic electric power.

Solution to Problem

An information processing apparatus according to an embodiment of the present technology includes: a signal generation unit, a first determination unit, and a second determination unit.

The signal generation unit processes an output of a sensor unit attached to a detection target, and generates a trigger signal at a time when a state change of the detection target is detected.

The first determination unit is brought out of hibernation and activated when receiving the trigger signal, determines the state change of the detection target from the output of the sensor unit by a first determination criterion, and outputs a determination impossibility signal in a case where the determination is impossible.

The second determination unit is brought out of hibernation and activated when receiving the determination impossibility signal, and determines the state change of the detection target from the output of the sensor unit by a second determination criterion different from the first determination criterion.

In the information processing apparatus, the first determination unit is configured to be started at a time when the state change of the detection target is detected, and the second determination unit is configured to be started in a case where determination by the first determination unit is impossible. As a result, it is possible to determine the state of the detection target while suppressing power consumption.

The signal generation unit may be configured to detect a motion of a user who wears the detection target from the state change of the detection target, and the first determination unit and the second determination unit is configured to determine, on the basis of a mode of the motion of the user, whether a corresponding gesture candidate exists or not from among a plurality of gesture candidates set in advance.

The first determination unit may be configured to execute a first determination process of specifying a gesture candidate corresponding to the mode of the motion of the user from among the plurality of gesture candidates, and output the determination impossibility signal in a case where specifying the gesture candidate is impossible.

The second determination unit may execute a second determination process of specifying a gesture candidate having a highest correlation with the mode of the motion of the user from among the plurality of gesture candidates.

The information processing apparatus may further include a setting unit that sets the plurality of gesture candidates. In this case, the signal generation unit may change a standard by which the trigger signal is generated in accordance with a kind of the plurality of gesture candidates set.

The signal generation unit may detect a motion of an arm of the user who wears the detection target, and the first determination unit and the second determination unit each may specify any one of a raising operation, a lowering operation, a twisting operation, and a shaking operation of the arm of the user.

The first determination unit and the second determination unit may be brought into hibernation again after the state change of the detection target is determined.

The information processing apparatus may further include a buffer memory capable of chronologically storing the output of the sensor unit.

An information processing method according to an embodiment of the present technology includes bringing out of hibernation and activating a first determination unit which determines a state change of a detection target by a first determination criterion, when the state change of the detection target is detected on the basis of an output of a sensor unit attached to the detection target.

A second determination unit which determines the state change of the detection target by a second determination criterion different from the first determination criterion is brought out of hibernation and activated, when the first determination unit is incapable of performing determination.

A program according to an embodiment of the present technology causes a computer to execute the steps of:

bringing out of hibernation and activating a first determination unit which determines a state change of a detection target by a first determination criterion, when the state change of the detection target is detected on the basis of an output of a sensor unit attached to the detection target; and

bringing out of hibernation and activating a second determination unit which determines the state change of the detection target by a second determination criterion different from the first determination criterion, when the first determination unit is incapable of performing determination.

Advantageous Effects of Invention

As described above, according to the present technology, it is possible to detect the state change of the user with basic electric power.

It should be noted that the effects described herein are not necessarily limited, and any effect described in this disclosure may be obtained.

