Abstract:
An echo sounder includes front and rear masses and a layered product of piezoelectric ceramics sandwiched therebetween, and a hollow space is formed in the front mass for defining a bending vibratory plate portion; a ring-shaped piezoelectric vibrator is accommodated in the hollow space, and has flat major surface or an outer side surface held in contact with the front mass without being fixed to the bending vibratory plate; while the layered product of piezoelectric ceramics gives rise to bending vibrations in the bending vibratory plate, the ring-shaped piezoelectric vibrator is driven for vibrations at the resonant frequency so that an acoustic wave with a large amplitude is radiated from the echo sounder; the bending vibratory plate and ring-shaped piezoelectric vibrator are independently designed so that the echo sounder achieves a high acoustic radiation efficiency without sacrifice of high withstand water pressure.
Abstract:
An Internet information displaying apparatus comprising character signal generating means for generating a character signal and displaying it on the screen of the displaying means, and character signal generation controlling means for detecting the state of transmission and reception of digital data of the digital data transmitting and receiving means, and controlling the character signal generating means so as to generate a character signal to indicate the transmission or reception state. The state of transmission or reception of the digital data of the digital data transmitting and receiving means, in other words, the state of connection to the provider is displayed on the screen.
Abstract:
A program guide display controller at a user terminal of a television broadcasting system in which a user can enter a program guide display command for displaying a program guide on a display device, and the user can set contents for restricting the program guide displayed on the display device. A memory is provided for storing the restricting contents set by the user. A display control is provided for displaying a program guide adapted to the restricting contents stored in the memory on the display device when the program guide display command is entered by the user.
Abstract:
A water current power generating device for generating electric power from water current power includes a sway vibrating body which bends in a response to a fluid force exerted on a circumference surface thereof by a water current, sways in a bending state, and generates tension in a response to a deflection angle from a direction of the water current, and at least one tension power generating unit for converting electro-magnetically or piezoelectrically the tension transferred from the sway vibrating body into the electric power such that a stable electric power can be generated from water current power in a variety of water areas of slow-moving water current to fast-moving water current.
Abstract:
There is provided an acoustic transducer which is reduced in size and which can generate an acoustic emission having a low frequency. The acoustic transducer of the present invention includes: a plurality of bending vibration modules 7 each of which is constructed of at least one bending vibrator made of at least one plate-shaped piezoelectric vibrator and at least one vibration plate; a plurality of support members 9 each of which supports each of bending vibration modules 7; and end plates which close both end portions of the acoustic transducer. The plurality of bending vibration modules 7 are arranged in a shape of a cylinder. Each of support members 9 is extended radially from the center of bending vibration modules 7 that are arranged in a shape of a cylinder and is joined to an end portion of each of the vibration plates of bending vibration modules 7 adjacent to each other. Further, a part of support members 9 has a cutout portion formed at an end portion thereof. The end plates have open apertures 4 formed therein respectively, open aperture 4 being passed through the end plate. Open aperture 4 communicates with the other open aperture 4 via acoustic emission generation part 21 and cutout portion 20, acoustic emission generation part 21 being constructed of two adjacent support members 9 and bending vibration module 7.
Abstract:
An acoustic transducer that enables acoustic radiation at a low frequency and that also improves efficiency of the acoustic radiation into liquid is provided. The acoustic transducer according to the present invention includes bending vibration module 7 that is formed by at least one bending oscillating body 1 that has at least one plate type piezoelectric resonator 2 and diaphragm 3, and supporting member 9 for supporting bending vibration module 7. A plurality of bending vibration modules 7 are cylindrically arranged, and supporting members 9 radially protrude from shaft 8 provided at the center of the cylindrically arranged bending vibration modules 7 and are joined with the ends of diaphragms 3 of adjoining bending vibration modules 7.
Abstract:
The present invention provides an information display device including an imaging unit that executes an imaging process to image a subject to output an imaging signal; a monitor capable of displaying an image of the subject based on the imaging signal; a switching part located near the monitor; a first display controller for displaying, in a menu on the monitor, each of a first group of items consisting of a plurality of items associated with the imaging process, whereby first setting data can be set; and a second display controller for displaying, in a menu on the monitor, each of a second group of items associated with a plurality of particular items in the first group and having fewer items than the first group, whereby second setting data can be set, wherein switching between the first and second display controllers is performed by operating the switching part.
Abstract:
There is provided a water current power generating device for generating electric power from water current power, the device comprising: a sway vibrating body which bends in response to a fluid force exerted on a circumference surface thereof by a water current, sways in a bending state, and generates tension in response to a deflection angle from a direction of the water current, and at least one tension power generating unit for converting electro-magnetically or piezoelectrically the tension transferred from the sway vibrating body into the electric power. With the above configurations, ever stable electric power can be generated from water current power in a variety of water areas of slow-moving water current to fast-moving water current.
Abstract:
An information display device including an imaging unit that executes an imaging process to image a subject to output an imaging signal; a monitor capable of displaying an image of the subject based on the imaging signal; a switching part located near the monitor; a first display controller for displaying, in a menu on the monitor, each of a first group of items consisting of items associated with the imaging process, whereby first setting data can be set; and a second display controller for displaying, in a menu on the monitor, each of a second group of items associated with particular items in the first group and having fewer items than the first group, whereby second setting data can be set, in which switching between the first and second display controllers is performed by operating the switching part.
Abstract:
There is provided an acoustic transducer which is reduced in size and which can generate an acoustic emission having a low frequency. The acoustic transducer of the present invention includes: a plurality of bending vibration modules 7 each of which is constructed of at least one bending vibrator made of at least one plate-shaped piezoelectric vibrator and at least one vibration plate; a plurality of support members 9 each of which supports each of bending vibration modules 7; and end plates which close both end portions of the acoustic transducer. The plurality of bending vibration modules 7 are arranged in a shape of a cylinder. Each of support members 9 is extended radially from the center of bending vibration modules 7 that are arranged in a shape of a cylinder and is joined to an end portion of each of the vibration plates of bending vibration modules 7 adjacent to each other. Further, a part of support members 9 has a cutout portion formed at an end portion thereof. The end plates have open apertures 4 formed therein respectively, open aperture 4 being passed through the end plate. Open aperture 4 communicates with the other open aperture 4 via acoustic emission generation part 21 and cutout portion 20, acoustic emission generation part 21 being constructed of two adjacent support members 9 and bending vibration module 7.