An energy harvesting device is provided. The energy harvesting device includes structural members covered with piezoelectric material resonating at different primary frequencies. As the structure to which the energy harvesting device is secured vibrates over a range of frequencies, more than one member resonates or is close to resonance. As such, multiple members work simultaneously to create electrical energy.

Multi-frequency piezoelectric energy harvester

Embodiments of the invention allow a player to have a unique gaming experience, different than other players, even when playing on the same network. A game may span several gaming sessions. States of a game, for example a bonus game, may be stored when the player decides to stop playing the game. When the player initiates a next gaming session, at the same or another location, the previous state of the game is re-loaded onto the gaming machine and the player returns to the previous state. Further, additional bonuses can be implemented because the network knows the identity and other information about the player. The additional bonuses may be unique to that player. Messages particular to a player are exchanged between a gaming device and a gaming network.

Player specific network

An angular velocity sensor includes four mass members which are connected by retaining beams, and the retaining beams are fixed to a substrate at node portions which correspond to nodes of the retaining beams when the mass members vibrate such that two adjacent mass members are in opposite phases. The mass members vibrate in an X-axis direction while the overall center of gravity is maintained at an approximately constant position. Two mass members disposed at the central region move in a Y-axis direction in accordance with an angular velocity about a Z axis, and the angular velocity is detected on the basis of the displacements thereof. The mass members vibrate in a stable vibrational state and dimensional errors or other problems, are compensated for by their shapes that are symmetric to each other in the Y-axis direction. Accordingly, the detection accuracy and reliability of the sensor are improved.

Angular velocity sensor

An inertial force sensor includes a detecting device which detects an inertial force, the detecting device having a first orthogonal arm and a supporting portion, the first orthogonal arm having a first arm and a second arm fixed in a substantially orthogonal direction, and the supporting portion supporting the first arm. The second arm has a folding portion. In this configuration, there is provided a small inertial force sensor which realizes detection of a plurality of different inertial forces and detection of inertial forces of a plurality of detection axes.

Inertial force sensor

A touch sensor that may detect an object away from the sensor is provided The touch sensor includes one or more drive electrodes; one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes; a detection circuit applying drive signals to the respective drive electrodes to detect the object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and a controller controlling to change a range of electric flux lines generated between the drive electrodes and the detection electrodes

Touch sensor and display device

The present invention aims to present an angular velocity sensor having a self diagnosis function. An angular velocity sensor of the present invention includes a driving part for stably vibrating a driving part of a sensor element having a driver part and a detector part for detecting an angular velocity and detection means for detecting the angular velocity of the sensor element and obtains a self diagnosis signal for a malfunction by detecting a mechanical coupling signal obtained at the detection means.

It is an object of the invention to provide an electronic circuit device in which semiconductor elements, resistors, capacitors and the like are packaged onto an insulating substrate such as a ceramic substrate or the like, wherein high-density packaging is realized. A circuit module comprises a terminal section having an annular insulating frame body and a plurality of terminals provided on respective portions of the frame body to extend outwardly therefrom, and a circuit substrate having wiring patterns each adapted for connection with the respective terminals of the terminal section and packaging to one surface of the circuit substrate surface packaging parts, the circuit substrate being connected to the terminals with the surface packaging parts directed toward the inside of the terminal section. One circuit module is stacked on the other circuit module to be connected to the latter by the terminals. Thus high-density packaging can be readily realized.

Electronic circuit device and manufacturing method thereof

An acceleration sensor having uniform characteristics of detection and improved low-frequency characteristics of detection. The acceleration sensor comprises a first piezoelectric plate (11), a second piezoelectric plate (12) connected directly to the first piezoelectric plate (11), a first external electrode (13) provided on the main surface of the first piezoelectric plate (11), and a second external electrode (14) provided on the main surface of the second piezoelectric plate (12). The first piezoelectric plate (11) and the second piezoelectric plate (12) are joined so that the polarization axis may be opposite. This structure is substantially L-shaped, that is, their support (15) is thicker than the other portions (capable of free vibration).

Acceleration sensor and acceleration apparatus using acceleration sensor

An electronic circuit is manufactured by the following method. A device is formed on the surface of a substrate, and a groove is formed in the surface of the substrate around the device. A part of the substrate is removed from the back of the substrate to a depth at least up to the groove. This method enables a plurality of devices to be separated into discrete chips by removing the part of the substrate from the back of the substrate, so that devices are efficiently produced.

Method for manufacturing electronic component

The drop impact measuring system has i) a plurality of bimorph-type acceleration sensor containing a plurality of free vibrating sections each of which has individual draw-out electrodes; ii) a switch section for selecting output from the bimorph-type acceleration sensors; iii) an amplifying circuit for amplifying a signal applied via the switch section from the acceleration sensors; and iv) a logic circuit for logically evaluating the output from the amplifying circuit and controlling the switch section according to the result acquired from the logical evaluation.

Hirofumi Tajika

Papers

Angular velocity sensor

Electronic circuit device and manufacturing method thereof

Acceleration sensor and acceleration apparatus using acceleration sensor

Method for manufacturing electronic component

Drop shock measurement system and acceleration sensor element used in the same