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| Number | Title | Issue Date |
| 7471254 | Triplate planar slot antenna A triplate planar slot antenna formed by laying a ground plate, a lower layer side dielectric layer, a lower layer side copper-clad film substrate, an upper layer side dielectric layer, a slot plate and an upper layer side copper-clad film substrate sequentially fro... | 12/30/2008 |
| 7417845 | Electric double-layer capacitor, electric energy storage device including the same, and production method for electric double-layer capacitor A positive side terminal electrode and a negative side terminal electrode which are exposed to the exterior of a resin enclosure pass through a positive side opening and a negative side opening formed on the enclosure, respectively, and are connected to a positive s... | 08/26/2008 |
| 7161085 | Thin flat twisted-pair gap cable and gap navigator unit A thin flat twisted-pair gap cable and gap navigator unit reduces the diameter of twisted-pair wire, aligns them side by side, and fuses and fixes them in place with two plies of tape so as to flatten the conventional round twisted-pair cable in order to pass the co... | 01/09/2007 |
| 6815313 | Electronic component to be mounted on a circuit board having electronic circuit device sealed therein and method of manufacturing the same A first substrate has a plurality of bumps and a second substrate has a plurality of openings at positions in registration with the plurality of bumps when the first and second substrates are placed one on top of the other in a confronting manner. The first and seco... | 11/09/2004 |
| 6539202 | Interference canceling device An interference canceling device comprising a flat phase IF narrow band BPF. A signal which has been branched from a signal on the main line is filtered by the BPF and is recombined with the signal on the main line. Phase rotation caused by frequency sepa... | 03/25/2003 |
| 6522301 | Above deck unit for automatic identification system An above deck unit for an AIS (automatic identification system) is externally installed on a ship. The above deck unit includes a radio circuit and an associated antenna for transmitting and receiving a message, a position detector and an associated anten... | 02/18/2003 |
| 6489844 | Feed-forward amplifier and controller of the same A feed-forward amplifier and a controller thereof. Two types of second pilot signals, sum frequency and difference frequency of a base pilot signal and a local oscillation signal, are generated by an injection-side mixer and injected into a distortion det... | 12/03/2002 |
| 6486724 | FET bias circuit A circuit for biasing an FET, comparing a gate bias voltage of the FET with a reference voltage at an operational amplifier and performing closed-loop control on the gate bias voltage of the FET with the output of the operational amplifier. The temperatur... | 11/26/2002 |
| 6369817 | Image synthesis system An image synthesis system comprises a volume memory for accumulating entire volume data after being divided into cubic data comprising units each of which is composed of eight pieces of volume data for constructing a small cube to make it possible to perf... | 04/09/2002 |
| 6321444 | Method of making surface acoustic wave device In a surface-acoustic-wave (SAW) device and method of fabricating the same, a SAW chip is flip-chip mounted in a package. The package has a window facing an electrode formed surface of the SAW chip. After the SAW chip is mounted, the in-process item is in... | 11/27/2001 |
| 6307542 | Magnet-based information input apparatus Information is inputted easily and conveniently on a writing board. A sheet member, which is provided with a map and attributed magnet-accommodating areas, is attached onto a magnetic plate provided with coils wound therearound at constant intervals in th... | 10/23/2001 |
| 6212132 | Three-dimensional radar apparatus and method for displaying three-dimensional radar image Disclosed is a three-dimensional radar apparatus comprising a radar transmitting/receiving unit, a three-dimensional polygon-generating unit, and a three-dimensional graphics unit, wherein a radar transmitter/receiver outputs signals concerning orientatio... | 04/03/2001 |
| 6198428 | Three-dimensionally designed display radar A three-dimensionally designed display radar in which a two-dimensional image data and three-dimensionally designed image data are depicted in combination in a video memory by the aid of an image controller, and they are simultaneously depicted on a scree... | 03/06/2001 |
| 6191789 | Ray casting method using hardware Ray casting method is performed using a hardware. Ray casting is performed on a 3D object formed in a three-dimensional array of voxels, luminance information is generated for each unit ray path based on voxel information assigned to the voxels on the ray... | 02/20/2001 |
| 6172560 | Amplifier with feedforward loops for rejecting non-linear distortion An amplifier with feedforward loops for rejecting non-linear distortion and control circuitry for such amplifier and employing a distortion compensation method. A signal from a dominant path is input into a synchronizing detector via an ALC circuit as a r... | 01/09/2001 |
| 5995569 | Method for establishing synchronization and demodulator using the same A method for establishing synchronization and a data demodulator using the same. Clock and frame synchronization is established by a UW detector. Then, a Ɗω detector and a Ɗ.PHI. detector detect a frequency error and a phase error, respectively, from a... | 11/30/1999 |
| 5929442 | Apparatus for and method of analyzing carbon isotopes The light absorption spectrum of carbon isotopes 12 CO2 and 13 CO2 is measured highly accurately within a short period of time to determine a carbon isotopic abundance ratio highly accurately and reliably. Laser... | 07/27/1999 |
| 5818283 | High power FET switch In an FET switch for controllably allowing and inhibiting passage of an input signal in ON state and OFF state, respectively, FETs are connected in a multi-stage configuration. A control voltage adjusting circuit is connected between a gate and one of a d... | 10/06/1998 |
| 5632042 | Data flow processor and data flow process changing system The present invention relates to a data flow process changing system for relieving the process executed in a data flow processor and further for changing the constant in the process of the data flow processor. The data flow process changing system include... | 05/20/1997 |
| 5594460 | Tracking array antenna system A tracking array antenna system is provided. When a signal from the target is received normally, control mode of an AZ axis and an electronic XEL axis is changed over according to whether or not a moving platform is inclined about the XEL axis for detecti... | 01/14/1997 |
| 5537122 | Tracking array antenna system An array antenna system is provided with a function for tracking a target. The system captures the target by first carrying out search control immediately after a power supply is turned on. After capturing the target, the system performs tracking control ... | 07/16/1996 |
| 5521453 | Surface acoustic wave filter and mobile communication system using same A composite surface acoustic wave filter includes an interdigitated interdigital surface acoustic wave filter having input and output terminals. Two one-port surface acoustic wave resonators are electrically connected in series to the interdigitated inter... | 05/28/1996 |
| 5521557 | Delay detection circuit and low-noise oscillation circuit using the same A delay detection circuit and a low-noise oscillation circuit using such a delay detection circuit. When the oscillation output of a VCO is to be supplied to two high frequency mixers, a π/2 phase shifter 24 in the front stage of one of the high frequenc... | 05/28/1996 |
| 5513388 | Automatic frequency control circuit An automatic frequency control circuit mounted on a mobile station in mobile communication. The automatic frequency control circuit performs feedback control of an oscillation frequency of a local oscillator used in conversion of a reception frequency to ... | 04/30/1996 |
| 5511215 | Debugging system for the loading and execution of data flow programs A data processing system includes a data driven processor for carrying out a plurality of different information processing in parallel using respective plurality of provided data packets, a router, and a plurality of von Neumann processors. When a von Neu... | 04/23/1996 |
| 5507023 | Receiver with an AGC circuit capable of expanding a dynamic range A receiver comprises an AGC circuit including a low noise amplifier for amplifying a reception input signal and an AGC amplifier, a level detection circuit for producing a strength indication signal indicative of an input field strength, and a demodulator... | 04/09/1996 |
| 5499268 | Adaptive equalizer capable of compensating for carrier frequency offset An adaptive equalizer includes a multiplier for multiplying, by corrective data, an output signal from a filter unit for compensating for a signal distortion to which input digital data are subjected, a decision unit for estimating and outputting symbols ... | 03/12/1996 |
| 5499347 | System having multiple data flow processors and switching unit for selectively supplying packets containing data from packet transmitter to any selected data flow processor A system having multiple data flow processors is provided which can independently test the operation of each individual data flow processor so that any failure found in the test will easily be located. A host computer is selectively connected to one of a ... | 03/12/1996 |
| 5497124 | Class AB push-pull drive circuit, drive method therefor and class AB electronic circuit using the same A class AB push-pull drive circuit has two NPN transistors Q1, Q2 and two PNP transistors Q3, Q4, the emitters of which are connected together. A constant voltage circuit maintains voltages between the bases of ... | 03/05/1996 |
| 5471722 | Method of manufacturing a surface acoustic wave A surface acoustic wave device and its manufacturing method. A surface acoustic wave device is used as filters for VHF and UHF range signals, or resonators for VHF and UHF range, by driving the surface of a surface acoustic wave element with applied signa... | 12/05/1995 |
| 5454013 | Amplitude modulation method and broadcasting apparatus for carrying out the method An amplitude modulation system. An input analog signal indicating audio, etc., is converted into a digital form and the low-order bits of the resultant digital signal are converted into analog form. The resultant analog signal is used to control a gain of... | 09/26/1995 |
| 5450043 | Quadrature modulator with distortion compensation A quadrature modulator multiplies two carriers which are 90° out of phase with each other by a sine component and a cosine component of a baseband signal, respectively, adds the product signals to each other, and amplifies the sum signal to produce a qua... | 09/12/1995 |
| 5412342 | Power amplifier device comprising a plurality of feedforward distortion compensating circuits in parallel For supply to first and second feedforward distortion compensating circuits 33(1), 33(2) connected in parallel, a two-divider 31 divides into signals of a common phase and a common amplitude an input or composite radio frequency signal supplied to an inpu... | 05/02/1995 |
| 5402441 | Signal receiver for global positioning system A GPS signal receiver has a PN code generator for producing a PN code identical to a PN code in a received GPS signal which is transmitted from a GPS satellite, the PN code produced by the PN code generator being controllable in phase, a PN code correlato... | 03/28/1995 |
| 5394120 | Device for testing an amplifier A device for testing an amplifier. A plurality of PN modulators are provided corresponding to a plurality of oscillators at stages preceding or following them, or fluctuation is given to division ratios at the oscillators. Since each of n carriers combine... | 02/28/1995 |
| 5383223 | Power control device wherein a bias voltage in level detection is given a constant difference from a detected voltage In a level detector (17), a bias voltage is developed by a bias current to have a substantially constant difference irrespective of a temperature variation from a detected voltage produced by detecting a device output signal for use in TDM modulation. A c... | 01/17/1995 |
| 5363072 | High-frequency power divider-combiner In a power amplifying apparatus which has a high-frequency power divider and combiner and two to four parallel-operated power amplifiers, in which a change is made in the number of the parallel-operated power amplifiers so as to adjust output power, there... | 11/08/1994 |
| 5359337 | Stabilized antenna system A stabilized antenna system is installed on a moving platform such as a ship to track a communication satellite. The antenna system examply employs either X1-Y-X2 or Y1-X-Y2 antenna mount. Rolling and pitching of the moving platform are offset by mechanic... | 10/25/1994 |
| 5327096 | Control circuit for automatically controlled feed forward nonlinear distortion compensation amplifier A control circuit for an automatically controlled feed forward nonlinear distortion compensation amplifier. The control circuit controls a distortion detection loop and a distortion removal loop. The distortion detection loop is a loop for feeding forward... | 07/05/1994 |
| 5313657 | Receiver capable of reliably detecting a failure In a receiver comprising a receiver filter (12) with a frequency attenuation band and a pilot oscillator (25) for generating a pilot oscillation signal with a pilot frequency in the frequency attenuation band, a coupler (26) couples the pilot oscillation ... | 05/17/1994 |
