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Interface system using mastication myoelectricity

A technology of interface system and masticatory muscles, which is applied in the field of machine interface system

Inactive Publication Date: 2011-02-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is a burden for the user to install electrodes

Method used

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  • Interface system using mastication myoelectricity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0122] In the following, an overview of the interface system for emphasizing menu prompts will be firstly described. Next, the configuration and operation of the interface system according to the present embodiment including the masticatory muscle myoelectric detection device will be described.

[0123] Figure 9 It shows the structure and usage environment of the interface system 1 (hereinafter referred to as "interface system 1") using the myoelectricity of the masticator muscle. This interface system 1 is exemplified corresponding to the system configuration of Embodiment 1 described later.

[0124] The interface system 1 is used to provide an interface for operating the TV 2 by selecting a menu item to be presented to the output unit 7 by the emphatic menu presentation unit 100 using the bioelectric signal (mastication muscle electromyography) measured around the head of the user 5. . The biological signal measuring unit 50 obtains the difference between the electrode A...

Embodiment approach 2

[0163] In the interface system 1 according to Embodiment 1, the emphasis-type menu presentation unit 100 emphasizes the menu items sequentially from top to bottom, and uses the maximum amplitude and latency as indicators to detect conscious intentions that appear stably around 200 ms from the point of emphasis. Masticatory muscle myoelectricity realizes an interface that allows menu selection in a short period of time, and there are few erroneous movements even during talking and eating.

[0164] The inventors of the present application conducted an additional experiment (random experiment) in addition to the experiment described above, under the condition that the menu items were emphasized in a random order. As a result, it was found that the maximum amplitude and latency of the intentionally expressed masticatory muscle EMG changed when the menu items were emphasized in a random order.

[0165] Therefore, the interface system according to the present embodiment switches the...

Embodiment approach 3

[0182] In the interface system 1 of Embodiment 1, the emphasis type menu presentation unit 100 emphasizes the menu items sequentially from top to bottom, and uses the maximum amplitude and latency as indicators to detect conscious chewing that occurs stably around 200 ms from the point of emphasis. Myoelectricity realizes an interface that can make menu selections in a short time, and there are few erroneous actions even during talking and eating.

[0183] Although it is ideal to always maintain less false movements, due to the main reasons such as the inability to maintain the same chewing method over time and changes in the electrode installation state, the characteristics of the masticatory muscle myoelectricity that is intentionally exhibited may sometimes be different. Changes may result in a decline in the accuracy of the EMG detection of the masticatory muscles.

[0184] E.g, Figure 17 It is the result of a descending experiment performed on different days for the sam...

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Abstract

The invention provides an interface system using mastication myoelectricity. The interface system enabling quick menu selection without special mastication or repetition of highlight even in any situation that myoelectricity is produced during e.g., conversation or a meal in the daily life of the user. The interface system includes an output unit for visually presenting an operation menu of a device, a measuring unit for measuring the mastication myoelectricity of the user, a menu presenting unit for sequentially presenting each of the menu items contained in the operation menu through the output unit, an amplitude calculating unit for determining the maximum amplitude of the potential waveform of the mastication myoelectricity, a latent time calculating unit for determining the latent time at which the potential waveform takes on a maximum amplitude from when each of the menu items is highlighted, and a judging unit for judging whether or not the maximum amplitude is larger than a predetermined threshold and whether or not the latent time is within a range of about 200 ms after the highlight. The menu presenting unit executes the processing corresponding to the highlighted menu item depending on the result of the judgment made by the judging unit.

Description

technical field [0001] The invention relates to an interface system for machines. More specifically, the present invention relates to an interface system for a device that utilizes user's biological information (myoelectricity that can be measured around the head). Background technique [0002] In recent years, various information devices such as TVs, mobile phones, and head mount displays (HMD: Head Mount Displays) have become popular and entered daily life. Therefore, users often need to operate information devices in their daily life. [0003] Usually, the user inputs commands by hand through an input mechanism (interface part) such as a key, so as to realize the operation of the machine. However, when performing housework, childcare, or driving, for example, both hands are occupied by things other than machine operation. In such a situation, it is difficult to operate the interface unit with hands, and machine operation cannot be realized. In addition, for users whose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01A61B5/0488
CPCG06F3/015
Inventor 足立信夫森川幸治
Owner PANASONIC CORP
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