Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 8085619 | Fish finder This disclosure provides a fish finder, which includes a transmission module and a reception module, for outputting an ultrasonic wave underwater, receiving an echo, and outputting a reception signal corresponding to an intensity of the received echo, a control modu... | 12/27/2011 |
| 7460433 | Ultrasonic wave transmitting and receiving system for detecting underwater objects A trawl net (2) is attached to ends of warps (4) extending from a ship (6), such as a trawl boat, in the sternward direction, and a transponder (5) to transmit a response signal is attached to an upper part of a net mouth of the trawl net... | 12/02/2008 |
| 7076342 | Attitude sensing apparatus for determining the attitude of a mobile unit An attitude sensing apparatus for determining the attitude of a mobile unit is provided that can reliably estimate an alignment angle between a GPS antenna coordinate system and an IMU coordinate system with good accuracy regardless of the magnitude of the alignment... | 07/11/2006 |
| 7016772 | Vehicle information display apparatus A vehicle information display apparatus receives multiple pieces of information on mobile vehicles, determines degrees of importance of the individual pieces of information according to specific conditions, and displays symbols of only those mobile vehicles of which... | 03/21/2006 |
| 7006406 | Underwater detecting apparatus, depth measuring apparatus and display apparatus A display having a screen providing historical water depth information and a screen providing fish school detection information is presented. The water depth information and the fish school detection information may be derived from an echo signal, and can be display... | 02/28/2006 |
| 6839303 | Matched filter, receiving beam-forming apparatus and sonar system A received beam-forming apparatus is disclosed is which echo signals received by multiple ultrasonic transducer elements arranged in a linear form are sampled at a specific scanning frequency to obtain sample data. A receiving beam-forming apparatus includes a memor... | 01/04/2005 |
| 6816126 | Helical antenna and helical antenna array A small and light helical antenna, with a high gain, includes arranging the dielectric cylinder with a helix conductor on the conductive plate and arranging a thin rectangular conductive plate between the lower end of the helix conductor and the feed point in a pred... | 11/09/2004 |
| 6711953 | Method of and apparatus for controlling beams produced by a cylindrical transducer In a cylindrical transducer constructed of a plurality of ultrasonic transducer arrays arranged in a circular form, the ultrasonic transducer arrays is divided into a plurality of groups, and tilt angles of transmitting and receiving beams are controlled to compensa... | 03/30/2004 |
| 6700532 | Magnetron drive circuit The invention provides a magnetron drive circuit which drives a magnetron to produce a generally rectangular-shaped narrow transmission pulse having sharply shaped rising and falling edges. The magnetron drive circuit includes a nonlinear load circuit and... | 03/02/2004 |
| 6683536 | Display apparatus for navigational aid A display apparatus for a navigational aid displays an own ship mark and a barge assembly mark representing respectively the shapes of own ship and a barge assembly, which are coupled to each other, in which the barge assembly mark includes segments arran... | 01/27/2004 |
| 6611228 | Carrier phase-based relative positioning apparatus A carrier phase-based relative positioning apparatus comprises a plurality of antennas of which at least one is installed on a mobile unit. The apparatus determines the position of each antenna other than one antenna used as a reference antenna relative t... | 08/26/2003 |
| 6595315 | Underwater detecting apparatus, depth measuring apparatus and display apparatus A screen on which water depth information obtained from an echo signal is historically displayed and a screen on which fish school detection information obtained from an echo signal is displayed, are displayed side by side on a display screen of a display... | 07/22/2003 |
| 6512477 | Detecting apparatus While successively varying its orientation at specific intervals, a detecting apparatus transmits pulsed radio waves from an antenna (1), and data corresponding to input levels derived from one sweep are written in a primary memory (4). output values obta... | 01/28/2003 |
| 6445646 | Signal processing method and apparatus, and sonar systems Signals entered from receiving transducer elements of 160 channels are multiplexed into 10 signal lines by 10 multiplexers. Each of 10 A/D converters converts the signals of 16 channels from analog from into digital form. The multiplexers are switched wit... | 09/03/2002 |
| 6198429 | Radar and like systems and method for improving image quality The present invention provides a radar apparatus and like systems and method which comprise coordinate converting means for signals defined in a polar coordinate system to corresponding signals defined in Cartesian coordinate system, an image memory, and ... | 03/06/2001 |
| 5844527 | Radar antenna Radio waves from the point f2 of the horn 7 are reflected in the diagonal direction at the sub reflector 3 for transmitting and receiving the radio waves and then further reflected at the main reflector 5 so that a fan-shaped beam narrow in the lateral di... | 12/01/1998 |
| 5754429 | System for displaying track of a moving body The present invention relates to a display system for displaying a past track of the ship, the present position of the ship, and a future predicted track of the ship, A display system according to the present invention generates coordinate data representi... | 05/19/1998 |
| 5582795 | Hold-transfer system for extraction containers A hold-transfer system for extraction containers has a main body and a cassette detachable from the main body. The cassette has holding devices for holding extraction containers in an upright position, an endless traveling member carrying the holding devi... | 12/10/1996 |
| 5561641 | Underwater detection system for determining carrier frequencies of signals arriving from a wide area The present invention is directed to provide an underwater detection system which can determine frequency components contained in echoes arriving from all azimuthal directions at high speed and enhance target discriminating capabilities by presenting such... | 10/01/1996 |
| 5485169 | Antenna orienting apparatus for vehicles A passive, active or mixed platform type antenna orienting apparatus mounts on a vehicle such as a small-sized vessel or an automobile, which is subject to turns and complex vibrations, traces a target such as a communications satellite with a directive a... | 01/16/1996 |
| 5412617 | High resolution measuring method and apparatus An underwater sonar measuring method using synthetic aperture technique which radiates an ultrasonic signal to targets by a transmission transducer unit (1B), receives echo signals reflected by the targets by moving reception transducer units (1A, 1B, 1C)... | 05/02/1995 |
| 5363307 | Measuring apparatus having an indicator for displaying tide or tidal current data A measuring apparatus such as a fish school detecting apparatus or a navigation apparatus which displays tide or tidal current data and is installed on a ship. The measuring apparatus comprises a transmitter/receiver for emitting ultrasonic search signals... | 11/08/1994 |
| 5327396 | Underwater detection system An underwater detection system which searches the water in a wide range of directions and displays moving targets in different colors depending on speeds of the targets comprises an ultrasonic transmitting unit (101) for radiating a search pulse having a ... | 07/05/1994 |
| 5278566 | Radar apparatus A radar apparatus radiates search signals successively in different directions, receives echo signals and displays the signals so that surrounding conditions in a wide range of directions are displayed. The radar apparatus comprises a buffer memory for te... | 01/11/1994 |
| 5214426 | Rotary encoder having absolute angle patterns and relative angle patterns The present invention relates to a rotary encoder for detecting a rotational angle. A rotary encoder according to the present invention comprises a rotating body provided on its surface with a plurality of digital code patterns representative of absolute ... | 05/25/1993 |
| 5187870 | Gyro compass A gyro compass according to the present invention includes an inclinometer for detecting inclination of the spin axis of a rotor with respect to the earth's surface, a horizontal axis torque applying device for exerting a torque about the horizontal axis ... | 02/23/1993 |
| 5157406 | Radar apparatus The present invention relates to a raster scanning radar display apparatus which is capable of improving the display of echo signals from objects in the vicinity of a ship on the display surface of an indicator. The raster scanning radar display apparatus... | 10/20/1992 |
| 5001678 | System for detecting surrounding environmental conditions using a multiple number of incoming signals A detection system forms a plurality of reception beams successively in angular directions by receiving incoming signals from various directions in a manner that the Doppler effect is produced to vary the carrier frequency of the incoming signals. The det... | 03/19/1991 |
| 4894661 | Fish school detecting method or apparatus A fish school detecting method or apparatus radiates radio search signals with their carrier frequency in the S-band frequency range, successively in different azimuthal directions through a wide angular range, receives echo signals, and displays the echo... | 01/16/1990 |
| 4729121 | Underwater detection system An underwater detection system display underwater conditions on an indicator comprised of a monochrome cathode ray tube with two groups of different degrees of brightness. One group of different degrees of brightness is related to the amplitude of echo si... | 03/01/1988 |
