Foster Electrical Co.

Tokyo, Japan

Foster Electrical Co.

Tokyo, Japan

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Patent
Foster Electrical Co. | Date: 2017-06-21

Provided is a switch-containing cable which, when bended, does not conduct electricity, but conducts electricity when pressurized with fingers. The switch-containing cable is provided with a belt-like first conductor film including a first belt-like base material on an inner surface of which a first conductor is disposed; a belt-like second conductor film disposed oppositely to this first conductor film through a gap and including a second belt-like base material on an inner surface of which a second conductor is likewise disposed; an insulating spacer arranged between this second conductor film and the first conductor film to maintain a gap therebetween; and a belt-like sheath configured with the first and second conductor films between which this insulating spacer is held and containing a belt-like conductor film functioning as a switch member in a hollow cavity, wherein the first conductor film constituting the belt-like conductor film is movably overlaid on the insulating spacer, and the hollow cavity of the sheath includes a gap which allows for the lengthwise relative displacement of at least the first belt-like base material caused by bending the sheath with respect to the belt-like conductor film housed in the hollow cavity, thereby preventing the switch-containing cable from conducting electricity in response to bending.


Patent
FOSTER Electrical CO. | Date: 2016-10-13

A switch-containing cable when bended does not conduct electricity, but conducts electricity when pressurized with fingers. The cable has belt-like first and second oppositely disposed conductor films including respective first and second belt-like base materials on inner surfaces of which respective first and conductors are disposed; an insulating spacer arranged to maintain a gap therebetween; and a belt-like sheath configured with the first and second conductor films sandwiching the spacer and containing a belt-like conductor film functioning as a switch member in a hollow cavity. The first conductor film constituting the belt-like conductor film is movably overlaid on the insulating spacer, and the hollow cavity of the sheath includes a gap allowing for lengthwise relative displacement of at least the first belt-like base material caused by bending the sheath with respect to the belt-like conductor film housed in the hollow cavity, thereby preventing the cable from conducting electricity when bended.


Patent
FOSTER Electrical CO. | Date: 2016-10-12

An earphone device includes first and second earphone bodies into which respective electro-acoustic transducers are built; first and second cables, one end of each of which is connected to the respective earphone body and within each of which a switch member to be turned on by one-way press is disposed over a predetermined range along the length direction of the cable so that the cable has switch functions; wherein a switch is shunted into two switches by the first and second cables, portions of the first and second cables having switch functions are arranged one on top of the other, and an overlapped portion is unidirectionally pressed to simultaneously turn on the respective switches. In addition, a sound-reproducing system is configured by combining a mobile terminal which operates in conjunction with this earphone device.


Patent
Foster Electrical Co. | Date: 2017-07-05

Provided are an earphone device in which a cable configured to be able to respond in a wide range to press and having switch functions is applied to an earphone to make it easy even for a user who uses the earphone device for the first time to operate the earphone device, and which includes switch parts in three places, so that these three parts are selected and pressed as appropriate when necessary, thereby allowing desired operations to be easily performed, is less liable to false operation, and eliminates the need to, for example, indicate operating ranges, and a sound-reproducing system using this earphone device. The earphone device is provided with a first earphone body in which an electro-acoustic transducer is built; a first cable one end of which is connected to this first earphone body and within which a switch member to be turned on by one-way press is disposed over a predetermined range along the length direction of the cable so that the cable has switch functions; a second earphone body in which an electro-acoustic transducer is built; and a second cable one end of which is connected to this second earphone body and within which a switch member to be turned on by one-way press is disposed over a predetermined range along the length direction of the cable so that the cable has switch functions, wherein a switch is shunted into two switches by the first and second cables, the first and second cables are arranged one on top of the other, and an overlapped portion is unidirectionally pressed to simultaneously turn on the switches. In addition, a sound-reproducing system is configured by combining a mobile terminal which operates in conjunction with this earphone device.


Tomita Y.,Foster Electrical Co. | Mitsukura Y.,Foster Electrical Co.
2013 6th International Conference on Human System Interactions, HSI 2013 | Year: 2013

Although brain computer interfaces (BCI) based on electroencephalographic (EEG) signals have been studied increasingly over decades, their performance is still limited in two main aspects. First, the shorter the EEG epochs, the more difficult the detection of a BCI command. Second, BCI commands are often misclassified while the subject is not performing any tasks by not focusing on a command (offset condition) because the EEG characteristics of the offset condition are not unique. In order to circumvent these limitations, the hemodynamic fluctuations in the brain during stimulation with steady-state visual evoked potentials (SSVEP) were measured using near infrared spectroscopy (NIRS) simultaneously with EEG. The offset condition is distinguished from the onset condition (focusing on a command) with extracted NIRS features through the design of low-pass filter. BCI command estimates were based on EEG SSVEP response. Simultaneous evaluation of EEG and NIRS was shown to improve the SSVEP classification, notably including the offset condition as an independent class, using a novel offset condition estimation approach. For 13 subjects, wrong classification for 9 classes with inclusion of offset condition were decreased. This proposed bimodal approach including the offset condition detection may render current BCI systems more reliable. © 2013 IEEE.


Tomita Y.,Foster Electrical Co.
IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society | Year: 2015

In this paper, I propose a novel binaural speech enhancement algorithm, called an asynchronous component cancellation Wiener filter (ACC-WF). It cancels not only uncorrelated noise components but also asynchronous noise components, by simply introducing a weight function in the calculation process of a binaural Wiener filter. This weight function is calculated from the phase of the cross-spectrum of observed signals at the left/right ears. In this method, a speech source at the front of a head is regarded as a synchronous signal source, whereas noise sources at different azimuth angles of the speech source are regarded as asynchronous signal sources. In accordance with the weight function, only the asynchronous components are removed. In experiments using speech signals, ACC-WF worked effectively for speech enhancement. The simplicity of the procedure and the effectiveness of ACC-WF may make current binaural speech enhancement systems faster and more reliable. © 2015 IEEE.


Patent
Foster Electrical Co. | Date: 2011-06-01

An earphone that can be used with its using mode selected, to be excellent in the handiness, by optionally changing the cord from its normal hang down state easily to an ear hanging state, or oppositely from the ear hanging state to the hang down state, to meet the users using state or taste, is provided. The earphone has a front housing 2 provided therein with a driver unit 8, an ear pad 3 covering as fitted to front outer peripheral part of said front housing 2, a rear housing 4 provided on the back of said front housing 2, a bushing 6 provided to said rear housing 4 and having at lower end part a cord lead-out section 6a, and a cord 9 led out of said cord lead-out section 6a, wherein the bushing 6 is rotatable.


Patent
FOSTER Electrical CO. | Date: 2015-02-24

A cable switch comprising a first base member of a band shape provided with a conductor on an inner surface and a second base member facing the first base member, and including a flat positive electrode and a negative electrode, the positive electrode being provided on one side of an inner surface thereof and the negative electrode being provided on another side of the inner surface, a gap being formed between the positive electrode and the negative electrode for separating and insulating the positive electrode and the negative electrode from each other.


Trademark
FOSTER Electrical CO. | Date: 2016-05-24

Mobile telephones; loudspeakers; headphones; headsets; electric actuators; electroacoustic transducers; controllers for computer games; controllers for virtual reality; goggles for virtual reality; virtual reality headsets; touch pad; displays for computers; mouse; keyboards; portable terminal devices; portable audio players; handles for remote control; operating handles for simulators; helmets for virtual reality; wearable information terminal.


Trademark
FOSTER Electrical CO. | Date: 2016-05-24

Mobile telephones; loudspeakers; headphones; headsets; electric actuators; electroacoustic transducers; controllers for computer games; controllers for virtual reality; goggles for virtual reality; virtual reality headsets; touch pad; displays for computers; mouse; keyboards; portable terminal devices; portable audio players; handles for remote control; operating handles for simulators; helmets for virtual reality; wearable information terminal.

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