| Patent Number |
Title Of Patent |
Date Issued |
| 7072379 |
Transmission circuit |
July 4, 2006 |
| This transmission circuit is used in, for example, a base station in CDMA mobile communication. The transmission circuit has a first delay circuit section which gives a delay to an input signal (spread signal) with a predetermined resolution, and a second delay circuit section gives a |
| 6732130 |
Fast hadamard transform device |
May 4, 2004 |
| A fast Hadamard transform device is provided which prevent from increasing of circuit scale and shorten a developing TAT even if the number of bits to be operated. The device includes n of shift register units and n/2 of butterfly computation units. Input data are entered to the shift re |
| 6480482 |
Multi-user interference cancellor with small sized circuits and little quantity of calculation |
November 12, 2002 |
| In the particular one of interference canceling stages of the multi-user interference cancellor of the parallel processing type, the IEUs reproduce the symbol replica signals from the input signal of the stage, and also produce the local spread signals. The local spread signals have resu |
| 6404759 |
CDMA multi-user receiving apparatus including interference canceller with optimal receiving stat |
June 11, 2002 |
| A multi-user CDMA (Code Division Multiple Access) interference canceller includes a coefficient output section and a plurality of stages. The coefficient output section dynamically determines a weight coefficient based a reception state of each of a plurality of user signals of a rec |
| 6089937 |
Cathode-ray tube dividing apparatus and cathode-ray tube dividing method |
July 18, 2000 |
| Disclosed are a cathode-ray tube dividing apparatus and a cathode-ray tube dividing method intended to simply and stably divide a cathode-ray tube in a shortened time. The dividing apparatus includes a positioning means for fixedly positioning the used cathode-ray tube at a specific loca |
| 6067293 |
Receiver |
May 23, 2000 |
| A receiver of a CDMA system using a spread spectrum scheme is provided, which, particularly in a case where the RAKE synthesis is performed, stably extracts path timings to be synthesized and realize a reliable RAKE synthesis. Self correlation of a replica of a spreading code is calculat |
| 5978421 |
Envelope control unit and digital modulator using the envelope control unit and digital modulati |
November 2, 1999 |
| A power component of a transmission modulated wave generated by synthesizing a plurality of digital-modulated multi-carriers is calculated. Then, the envelope control unit of the present invention controls an envelope of the transmission modulated wave by outputting the transmission |
| 5949767 |
Reception unit for receiving a frequency division multi-accessed signal based on plural spread s |
September 7, 1999 |
| A reception unit for receiving a frequency division multi-accessed signal based on not more than n (n is an integer) spread signals derived from spreading a carrier includes a conversion device for converting a received signal into a quantizable intermediate frequency band signal. Also |
| 5926471 |
CDMA communication method, CDMA transmitter and CMDA receiver |
July 20, 1999 |
| For a CDMA communication system using an interference canceller, a communication system which enables the interference canceller to easily confirm pulling-in of its own signal is disclosed. Input transmission signals are stored through a serial-parallel converter 101 in storage circu |
| 5844935 |
CDMA Receiver |
December 1, 1998 |
| A spread spectrum receiver includes a chip synchronization circuit controlling a phase of a spreading code for tracking synchronization at a phase control rate which is variable according to a rate control value. The rate control value is determined based on the signal-to-interference |
| 5822725 |
VOX discrimination device |
October 13, 1998 |
| In a radio communication system such as a digital automobile telephone, a VOX controller stops a transmission of a frame having no voice data to perform power savings, and a VOX device discriminates whether the voice data are present or absent in each frame. In a reference power measurin |
| 5573200 |
Hook type coil winding machine |
November 12, 1996 |
| A hook type coil winding machine is disclosed wherein an occupation rate of a wire which is threaded into a core hole of a head and wound on the head is increased and the deviation of physical properties of cores produced thereon is reduced. Also, the difficulty in winding at a last stag |
| 5513223 |
FIR digital filter and method for signal processing thereof |
April 30, 1996 |
| An FIR digital filter of which impulse response S(t) meets an equation, S(t)=H(t)exp(j.omega.t), where H(t) represents roll off characteristics and .omega. is an arbitrary frequency. The filter includes a data storing device for delay storing real and imaginary number data of a plurality |
| 5495506 |
Automatic frequency control apparatus |
February 27, 1996 |
| An automatic frequency control apparatus includes a frequency converter, an analog/digital converter, extractor, a storage unit, a controller, and a local oscillator. The storage unit stores unique word frequency modulation models representing time waveforms obtained by modulating, with |
| 4810229 |
Omnidirectional toy vehicle |
March 7, 1989 |
| An omnidirectional toy vehicle has: a plurality of bearing members rotatively mounted on a chassis, each bearing member bearing an associated drive wheel and having a hollow portion at the center thereof along the whole length thereof; a steering mechanism including a stepping mechanism |
