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| Number | Title | Issue Date |
| 8175562 | Automatic gain control for enhanced bit error rate performance An apparatus including automatic gain control (AGC) includes at least one variable gain amplifier (VGA) operative to receive an input signal and to generate an amplified signal. A gain of the VGA is controlled as a function of at least a first control signal. The ap... | 05/08/2012 |
| 7400909 | Mobile communication apparatus used to communicate information between mobile units A mobile communication apparatus is provided, which permits highly efficient communication even between mobile units that cannot communicate directly because of signal-shielding communication obstacles. The mobile communication apparatus 10 includes tr... | 07/15/2008 |
| 7302267 | Apparatus and method for estimating a velocity of a mobile terminal in a mobile communication system A Base Station (BS) apparatus for estimating a velocity of a Mobile Station (MS) in a mobile communication system includes a channel estimator for performing channel estimation according to a velocity band, receiving a wireless channel signal from the MS, and perfor... | 11/27/2007 |
| 7242939 | Method of optimizing performance of mobile terminal The method of optimizing performance of a mobile terminal comprising a radio communication module, a central computing unit and a plurality of data processing software components which optimizes the operation performance of the mobile terminal comprises the steps of... | 07/10/2007 |
| 7242940 | Mobile communication system terminating communications at high speeds Mobile station equipment, base station equipment, and an exchange equipped with all or some units for monitoring the speed of a mobile station, making a judgment whether or not the speed exceeds a given threshold value, and restricting both or at least one of channe... | 07/10/2007 |
| 7215724 | Signal demodulation in a mobile receiver A WCDMA receiver in which the dependencies of different functional modules are arranged to allow proper tailoring of the Channel Estimation (CE) module bandwidth. A PreCE provides rough estimation results of the channel complex gain. The rough estimation results are... | 05/08/2007 |
| 7123926 | System and method for providing information to users based on the user's location A system for providing an advisory communication to a user via a mobile unit includes locating means for locating the position of the mobile unit and sending means for sending a communication to the mobile unit. The mobile unit includes alerting means for alerting t... | 10/17/2006 |
| 7120439 | Method and apparatus for mobile radio velocity estimation A mobile radio velocity estimation system (100) includes an autocorrelation block (106) that determines the autocorrelation of a received signal (104) using one lag (102). A power determination block (108) determines the power of t... | 10/10/2006 |
| 7068986 | Method for processing radio waves, and audio system utilizing the method In multi-path regions of high wave strength, noise in produced sounds of a vehicle audio system is reduced due to controlling of amplification of radio waves received by an on-glass antenna on the basis of wave strength at a running position of a vehicle and its cha... | 06/27/2006 |
| 6996400 | Method of channel allocation for a mobile terminal moving in a cellular communication network The present invention proposes a method of channel allocation for a mobile terminal (MS) moving in a cellular communication network (NW), said method comprising the steps of: detecting (S21) the speed of said mobile terminal (MS) moving in said network, and d... | 02/07/2006 |
| 6907259 | Radio transceiver A radio transceiver, for example a mobile station, for use in a code division multiple access (CDMA) system, estimates the signal-to-interference ratio of received signals, for use in power control of transmissions thereto. The estimation algorithm, used to estimate... | 06/14/2005 |
| 6879920 | Method and system for estimating movement speed of mobile unit The present invention is related to a method for estimating a movement speed of a mobile unit in a mobile radio communication system. First, the present invention receives a first signal from the mobile unit. Then, the system calculates an envelope of the first sign... | 04/12/2005 |
| 6819928 | Speed esimation for digital cordless telephones In response to the resetting of a timer 6, a received electric field level measuring unit 3 measures the received electric field level in a predetermined time, and a control unit 4 computes the average level Vav in that time and compares this le... | 11/16/2004 |
| 6816731 | Mobile station equipment, base station equipment, exchange, and mobile communication system Mobile station equipment, base station equipment, and an exchange equipped with all or some units for monitoring the speed of a mobile station, making a judgment whether or not the speed exceeds a given threshold value, and restricting both or at least one of channe... | 11/09/2004 |
| 6778930 | System for reducing distortion of signals transmitted over a bus A computer system measures bus signal distortion and then adjusts certain characteristics of the signal transmitted over the bus, or adjusts other characteristics of the bus or the load on the bus so that signal distortion is reduced. Distortion characteristics that... | 08/17/2004 |
| 6741845 | Wave-shaper device A wave-shaper device having an output terminal for providing a first periodic analog signal with a first frequency, the wave-shaper device including an oscillator having an output terminal for providing a second periodic analog signal with a second frequency which i... | 05/25/2004 |
| 6668172 | Reception apparatus and reception processing method A reception apparatus and a reception processing method are proposed to improve a reception characteristic by compensating deterioration of transmission quality independently of the traveling speed of a terminal. When a transmission signal sent via a radi... | 12/23/2003 |
| 6564042 | Velocity-estimation-based gain tables A method of modifying gain tables for the reverse-link communications in a cdma2000 wireless communication network includes the steps of estimating the velocity of a mobile station for a given frame error rate (FER) and data rate, and providing three gain... | 05/13/2003 |
| 6542471 | Radio communication system for mobile objects and radio communication mobile station used in the system Between communication equipment to be loaded in a vehicle and a base station, CDMA data communication is performed. A speed sensor detects a traveling speed. When the speed sensor crosses a speed determining value, a communication speed is changed. When t... | 04/01/2003 |
| 6453180 | Vehicle-installed telephone apparatus A vehicle-installed telephone apparatus comprises a portable phone with announcing means controlled by a microcomputer, running detecting means which detects that a vehicle is running, incoming call detecting means which detects that an incoming call is r... | 09/17/2002 |
| 6438393 | Integrated motion detector in a mobile communications device A mobile communications device (100) comprises a motion detector (101) for producing a signal which represents the kinetic state of the mobile communications device. Preferably the mobile communications device comprises a body and a vibrating alarm device... | 08/20/2002 |
| 6311078 | Automatic shutoff for wireless endpoints in motion A wireless telephone does not generate an alerting signal if the speed at which the wireless telephone is moving exceeds a predefined speed when an incoming call is received. If an alerting signal is not generated for an incoming call, the wireless teleph... | 10/30/2001 |
| 6249682 | Apparatus and method for estimating speed in mobile communication A speed estimation apparatus detects the change of a transmission power control command transmitted from a receiving station and estimates the moving speed of the receiving station in mobile communications of a spread spectrum system. The speed estimation... | 06/19/2001 |
| 6154666 | Wireless communications assembly with variable audio characteristics based on ambient acoustic environment An environmental sensor distinguishes between a plurality of different ambient acoustic environments and communicates with an audio gain circuit which automatically adjusts the audio characteristics of the speaker and microphone of a wireless communicatio... | 11/28/2000 |
| 6108532 | Incoming call control based on the moving speed of a radio communications apparatus In a radio communications apparatus according to the present invention, an RSSI detects the strength of a received signal, and a fading pitch detection circuit detects a fading pitch of the signal from the detected strength thereof and determines whether ... | 08/22/2000 |
| 6049700 | Automatic volume adjustment in a wireless handset Determining in a wireless telecommunication switching system a base station on which a wireless handset is registered and using information concerning background noise at the location of the base station to automatically adjust the ringer and voice volume... | 04/11/2000 |
| 5483692 | Automatic variable radio volume control system A multiplex bus that is corrected to an AM/FM/CD radio. The multiplex bus couples communicating microprocessors in modules, including a body computer, an engine controller, a transmission controller, and other functional components of an automobile. The r... | 01/09/1996 |
| 5438595 | Method of estimating the speed of a mobile unit in a digital wireless communication system In a digital wireless communication system communicating between a mobile unit and a stationary unit, a received digitally encoded signal is sampled to produce a first sampled digital signal having a plurality of symbols. The short term energy over a plur... | 08/01/1995 |
| 5204971 | Vehicle sound system A sound system for a vehicle detects the amount of noise, such as road noise, and automatically controls the audio volume in accordance with the noise amount. There are provided a plurality of tables, in which the relationships among the present volume, t... | 04/20/1993 |
| 5191312 | Automotive accessory control center A combination of automobile radio and city call or paging receiver equipped with a display (4) has the additional feature of a vehicle speed sensor (24) which is used to block display of possibly distracting information whenever the vehicle exceeds a pred... | 03/02/1993 |
| 5170499 | Method and apparatus for adjusting the volume level of a radio Radios (104) are commanded to determine the ambient sound level. A code representing the ambient sound level is transmitted to a calling radio (104c) or base unit 102, that determines whether to adjust the volume level (up or down) of the called radio (10... | 12/08/1992 |
| 5140695 | Channel assignment system in mobile communication system In a mobile communication system between a mobile station and a telephone network through a base station which assigns a communication channel so that it satisfies required communication quality or D/U ratio, said base station comprises a moving speed det... | 08/18/1992 |
| 5034984 | Speed-controlled amplifying A variable gain amplifier receives an input electrical audio signal and has its gain controlled by a vehicle speed signal representative of the vehicle speed. The signal provided by the variable gain amplifier is coupled to a manually set volume control t... | 07/23/1991 |
| 5027432 | Motor vehicle radio with an automatic volume control device The invention relates to a motor vehicle radio with an automatic volume control device (20) and a manual volume-setting device (14). The automatic volume control device (20) is fed with a speed signal detected by a speed sensor and delivers a volume signa... | 06/25/1991 |
| 5014351 | Method and apparatus for reducing alternator noise A phase shifted (28) version of an alternator noise signal (26) is coupled into a recovered signal (22) that has been corrupted by the alternator noise. The alternator noise signal (26), and phase shifted version thereof, add to zero (or near zero) so as ... | 05/07/1991 |
| 4944018 | Speed controlled amplifying A vehicle has an engine and a sound amplifying system characterized by a frequency response including a signal source and a manually operable sound level setting control that establishes the sound level of the desired signal in the vehicle, a power amplif... | 07/24/1990 |
| 4933987 | Remote pressure actuated audio control for a vehicle sound amplification system An improvement is provided for a radio system for a vehicle, such as an automobile. A pressure sensitive transducer is mounted externally on the body of the vehicle and in a position of exposure to pressure changes resulting from air resistance as the veh... | 06/12/1990 |
| 4864246 | Mobile automatic volume control apparatus An automatic volume control apparatus for use in a mobile audio apparatus in which a detection output from a noise detection section is compared with a control output applied to a volume control section, and a capacitor inserted between a control signal i... | 09/05/1989 |
| 4754486 | Motorcycle stereo audio system with VOX intercom An improvement to motorcycle intercom communications between the motorcycle driver and passenger providing for stereo listening in each of both right and left helmet earphones wherein intercom communications may be had through microphones always activated... | 06/28/1988 |
| 4684899 | Audio amplifier for a motor vehicle Low frequency amplifier, mainly for use in motor vehicles, of the type comprising an equalizing device and a device for compensating ambient noise, characterized in that the equalizing device (1a) is a fixed-correction-type device placed downstream of the... | 08/04/1987 |
