| Patent Number |
Title Of Patent |
Date Issued |
| 7165534 |
Fuel feed system |
January 23, 2007 |
| A fuel feed system capable of feeding a fuel to fuel injection valves at a fuel pressure with improved stability is provided. A fuel feed system for an internal combustion engine including a fuel tank and a low-pressure pump for feeding the fuel in the fuel tank to fuel injection valves, |
| 6651211 |
Method of mobile telecommunications |
November 18, 2003 |
| A to-be-sent signal (20) is comprised of a header (21) and convolution encoded data (22). An error correcting code (23) has a capability to correct a bit error or burst error contained in an objective data (24) placed apart from the header (21) in said convolution encoded data (22). |
| 6611508 |
Wireless communication method and apparatus with power-control channel |
August 26, 2003 |
| A wireless communication apparatus in a wireless communication system transmits power-control information on a power-control channel, separate from the traffic channels of the wireless communication system. In a code division multiple access system, the power-control channel has a separa |
| 6580713 |
Radio communication apparatus and mobile radio communication system |
June 17, 2003 |
| A mobile radio communication system for communicating between a base station and a mobile station by means of frames, each frame including a header and data. The mobile station includes a transmission number provider which provides a first transmission number to a first frame to be t |
| 6459691 |
System for communication between sub-transmission units under control of main transmission unit |
October 1, 2002 |
| A radio communication system such as a mobile communication system is provided which establishes communications between a main transmission unit and sub-transmission units. The main transmission unit transmits to the sub-transmission units simultaneously a frame including a data slot to |
| 6424689 |
Radio communication system, transmitter and receiver therefor |
July 23, 2002 |
| In a mobile radio communication system, a transmitter of a base station transmits broadcast information to receivers of mobile stations in the form of frames. The transmitter produces a long frame composed of a plurality of frames each including a first bit sequence and part of the b |
| 6411663 |
Convolutional coder and viterbi decoder |
June 25, 2002 |
| A convolutional coder performs rate 1/N and 1/M convolutional coding (M<N). The convolutional coder includes a convolutional code generator, a parallel/serial converter, a rate indicator, and a selector. The rate indicator indicates either rate 1/N or 1/M convolutional coding. The |
| 6282174 |
Mobile communication system |
August 28, 2001 |
| This invention uses a plurality of encoding methods for communication between a base station BS and a mobile station MS. When the base station BS encodes a transmission signal, a suitable encoding method is selected from a plurality of encoding methods based on traffic conditions, the |
| 6272123 |
Variable rate CDMA transmitter-receiver and transmission method |
August 7, 2001 |
| A CDMA transmitter-receiver capable of varying a transmission rate of a voice signal coded on a sample by sample basis. A voice encoder encodes, on a sample by sample basis, a voice signal to be transmitted. An information distributor divides a coded digital signal, and supplies the |
| 6154454 |
Radio communication device and mobile communication system |
November 28, 2000 |
| A mobile communication system includes a base station and mobile stations divided into a plurality of groups. A radio communication device 10 at the base station spreads framed control information using a spreading code, and then transmits it via a control channel to the mobile stations. |
| 5987020 |
Intermittent transmission control system |
November 16, 1999 |
| An intermittent transmission control system based on a TDMA system which involves a burst transmission, has a sound presence detector for detecting presence or absence of sound information to be transmitted on the basis of an aural signal input from a microphone; a switch unit for switch |
| 5901160 |
Decoder with an error control adaptively applied on the basis of the estimated position of a slo |
May 4, 1999 |
| A decoder which is adapted to receive a frame of coded data consisting of multiple slots including intra-frame position information indicating positions of the slots in the frame to decode the coded data, and which adaptively applies appropriate ones of plural error control methods d |
| 5887007 |
Viterbi decoding method and viterbi decoding circuit |
March 23, 1999 |
| A convolutional code having identical initial and final states is decoded by using the Viterbi algorithm to trace a path starting from a first state and ending at a second state. If necessary, the trace is repeated, starting from the second state, provided the second state is not the sam |
| 5838697 |
Bit error counting method and counting technical field |
November 17, 1998 |
| An error detecting device and method for use when applying the Viterbi decoding to an inputted signal, when it is necessary to derive the number of errors included in a decoded signal. A value of a path metric derived upon the Viterbi decoding is read out and outputted as the number of |
| 5770927 |
Method and apparatus for distinguishing control channel from traffic channels |
June 23, 1998 |
| A discriminating circuit stores a flag designating a received radio signal as belonging to a traffic channel, a control channel, or an unidentified channel. If the flag does not indicate the traffic channel, the discriminating circuit decodes the signal and detects errors on the assu |
| 5581577 |
Device for and method of counting bit errors and device for and method of identifying signals |
December 3, 1996 |
| A bit error counter for a digital communication system has transmitter and receiver. The transmitter includes circuitry for convolution encoding of an input original signal and outputting a transmission signal. The receiver includes error correcting/decoding circuitry for inputting a |
| 5422894 |
Real-time convolutional decoder with block synchronizing function |
June 6, 1995 |
| A decoder receives frames of data that have been block coded, then convolutionally coded, at a rate of multiple frames per block. As each frame is received, the decoder counts it, stores convolutional code path information, and updates metric values pertaining to the paths. Once per |
| 5303263 |
Transmission channel characteristic equalizer |
April 12, 1994 |
| An equalizer including a channel estimator allowing a Viterbi algorithm processor to estimate transmitted symbols accurately, so that the impulse response of a transmission channel may not deviate from the correct one. The equalizer outputs an transmitted symbol sequence estimate having |
