Patents Issued in July 6, 2004
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Patent number: 6760553Abstract: An electrophotographic cluster printing system for performing printing by using a plurality of electrophotographic recording apparatuses such as printers, facsimile machines or copying machines each capable of manifesting an image by using colored particles such as toner. The electrophotographic cluster printing system includes a plurality of electrophotograhic recording apparatuses each including a photoconductor, a charger, an exposure device, a developing device, and an image quality controller for detecting a factor concerning image quality and controlling image quality of an output image on the basis of information of the detected factor. In the system, at least two of the electrophotograhic recording apparatuses is used for printing one job and image quality of any one of the electrophotograhic recording apparatuses is controlled on the basis of detected information of the other electrophotograhic recording apparatuses.Type: GrantFiled: December 27, 2002Date of Patent: July 6, 2004Assignees: Hitachi Printing Solutions, Ltd., Hitachi, Ltd.Inventors: Teruaki Mitsuya, Keisuke Kubota, Masayoshi Ishii, Shintaro Yamada
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Patent number: 6760554Abstract: An apparatus for cleaning an imaging surface with a cleaning blade including a drop seal actuator that urges a seal into position and then collects toner in a cleaner unit. The seal captures falling accumulated toner from the cleaning blade which may contaminate the xerographic area when the cleaning blade is retracted from the imaging surface. Implementation of the drop seal actuator in contact with the seal positions the seal to contain toner within the cleaner unit.Type: GrantFiled: August 5, 2002Date of Patent: July 6, 2004Assignee: Xerox CorporationInventors: Eugene J. Fina, Andrij Harlan
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Patent number: 6760555Abstract: The present invention is directed to a sealing mechanism for use in a toner cartridge. The sealing mechanism includes a developer roller and a toner plow. The developer roller has an outer cylindrical surface. The toner plow includes a concave contact region configured to mate with the outer cylindrical surface of the developer roller and a toner plow face placed at an acute angle with respect to a longitudinal axis of the developer roller.Type: GrantFiled: March 21, 2002Date of Patent: July 6, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Patrick S. Dougherty, George Bernhard Clifton
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Patent number: 6760556Abstract: Sealing member for toner container having a tearable central strip and being associated with connecting elements ensuring the pressing of the lateral portions of a compressible cleaning element, with respect to the portion of the cleaning element intended for cleaning the torn central strip.Type: GrantFiled: July 16, 2002Date of Patent: July 6, 2004Assignee: CF TechnologiesInventors: Jan De Kesel, Gino Sirejacob, Alexander Van Betsbrugge
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Patent number: 6760557Abstract: An image forming apparatus, having a plurality of image forming cartridges arranged one above another and configured to form an image on a medium; a plurality of optical writing devices arranged one above another respectively corresponding to the plurality of image forming cartridges and configured to emit light beams to the plurality of image forming cartridges so as to form the image on the medium; and a vertical stay disposed between the plurality of image forming cartridges and optical writing devices and including slots configured to allow the light beams emitted from the plurality of optical writing devices to pass therethrough to the plurality of image forming cartridges.Type: GrantFiled: May 1, 2003Date of Patent: July 6, 2004Assignee: Ricoh Company, Ltd.Inventors: Yasushi Nakazato, Kazuyuki Shimada, Tomohiro Nakajima
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Patent number: 6760558Abstract: A developing device includes a developer bearing member, and a developer container for containing a developer. The developer container includes a developer containing portion, a partition member dividing an interior of the developer containing portion into a plurality of rooms, and a cover for covering the developer containing portion, wherein the partition member is molded integrally with the cover. The partition member is disposed in parallel with a longitudinal direction of the developer bearing member and extended to form a gap between the partition member and a bottom surface of the developer containing portion throughout an entire length of the developer containing portion in a longitudinal direction of the developer bearing member. The developer containing portion includes a rib disposed in a direction intersecting the partition member and wherein the partition member includes a groove disposed in a direction so as to avoid intersecting the rib.Type: GrantFiled: February 4, 2002Date of Patent: July 6, 2004Assignee: Canon Kabushiki KaishaInventors: Kazuo Chadani, Tadayuki Tsuda, Daisuke Abe
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Patent number: 6760559Abstract: An image formation apparatus including at least one rotary member pressed onto the belt directly or indirectly and allowed to integrally rotate with the shift of the belt, a belt driving unit which moves the belt, or a rotary member driving unit which rotates the rotary member, and at least one of rotary member load correction unit for correcting variations in the load imposed on the rotary member and belt load correction unit for correcting variations in the load imposed on the belt.Type: GrantFiled: December 3, 2002Date of Patent: July 6, 2004Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Koide
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Patent number: 6760560Abstract: A developing apparatus has a developer supporting member 41 with a surface roughness RZ in the range from 3.0 to 5.5 &mgr;m and a one-component developer T with a bulk density in the range from 0.35 to 0.55 g/ml, and an image is developed by forming a layer of the developer T on the developer supporting member 41. This makes it possible to form a thin toner layer stably despite changes in ambient conditions, and to prevent low image density and fogging. The absolute value of the amount of electric charge with which the developer T is charged is preferably in the range from 3.0 to 10.0 &mgr;C/g. The developer supporting member 41 is made preferably of stainless steel.Type: GrantFiled: May 30, 2002Date of Patent: July 6, 2004Assignees: Kyocera Mita Corporation, Kyocera CorporationInventors: Takashi Nagai, Hidekazu Tamura, Seiji Kikushima, Toru Takatsuna, Hiroko Higuchi, Hiroaki Moriyama, Kouzou Teramoto, Noriya Okamoto
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Patent number: 6760561Abstract: A developing device of the present invention includes a developing roller provided with a plurality of magnetic poles. The magnetic poles include a main pole and two auxiliary poles positioned at both sides of the main pole for helping the main pole form a magnetic force. The auxiliary poles reduce the half width of the main pole. An AC-biased DC bias for development is applied to the developing roller and disturbs carrier grains close to the developing roller. Images free from various defects including granularity and local omission are achievable with the developing device.Type: GrantFiled: September 9, 2002Date of Patent: July 6, 2004Assignee: Ricoh Company, Ltd.Inventor: Hisao Kurosu
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Patent number: 6760562Abstract: This invention relates to an image forming apparatus. The image forming apparatus includes a primary transfer means for bringing one surface of an intermediate transfer body and/or transfer medium into contact with a photosensitive body surface and pressing the surface against the photosensitive body surface to transfer a toner image formed on the photosensitive body surface onto one surface of the intermediate transfer body and/or transfer medium.Type: GrantFiled: June 16, 2003Date of Patent: July 6, 2004Assignee: Konica CorporationInventors: Satoshi Nishida, Hiroaki Miho, Shigetaka Kurosu, Hiroshi Morimoto, Masashi Saito
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Patent number: 6760564Abstract: A picture image forming apparatus including a photoreceptor belt driven by a drive device, a plurality of developing devices for forming toner picture images on the photoreceptor belt, an intermediate transfer device, to a surface of which toner picture images on the photoreceptor belt are overlappingly transferred plural times when a picture image is to be formed on a single page, and a transfer roller for pushing a sheet against the intermediate transfer device in order to transfer toner picture images to the sheet. The intermediate transfer device is an intermediate transfer belt contacted by the photoreceptor belt to be driven thereby. A photoreceptor-side roller enables contact of the intermediate transfer belt and the photoreceptor belt, and the intermediate transfer belt is trained around the photoreceptor-side roller and a transfer-side roller for pushing the sheet against the transfer roller. A diameter d2 of the transfer-side roller is smaller than a diameter d1 of the photoreceptor-side roller.Type: GrantFiled: September 11, 2002Date of Patent: July 6, 2004Assignee: Hitachi, Ltd.Inventors: Shunichi Oohara, Kazuhiro Wakamatsu, Akira Sasaki, Kazuo Kikuchi, Masahiko Saito, Atsushi Onose, Akira Shimada, Masashi Yamamoto, Masaru Nakano, Shogo Matsumoto
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Patent number: 6760565Abstract: An image forming apparatus includes an optical unit which forms an electrostatic latent image on a surface of a photosensitive body, a developing device which supplies a liquid developer on the electrostatic latent image formed by the optical unit, and develops the electrostatic latent image into a develop image, a condensing device which condenses the developer image, and a transfer device which transfers the developer image condensed by the condensing device to a recording medium, while applying a shearing stress to the developer image.Type: GrantFiled: February 28, 2002Date of Patent: July 6, 2004Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Takeshi Watanabe, Koichi Ishii, Hitoshi Yagi, Mitsunaga Saito, Masahiro Hosoya, Yasushi Shinjo, Haruhi Oooka
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Patent number: 6760566Abstract: A method and apparatus for closed-loop power threshold leveling for a satellite communication system. An aspect of the present invention includes a plurality of user earth terminals (UET), a satellite and a network control center (NCC). The NCC polls the UETs to obtain power profile information. When polled, the UELTs form power profile responses and send the responses back to the NCC. The NCC forms a power profile database and statistically analyzes the power profile information to determine an uplink power threshold adjustment. The NCC transmits the uplink power threshold adjustment to the satellite, which adjusts an on-board uplink power level threshold in response to the uplink power threshold adjustment. In systems using mutltiple coding levels, the NCC determines uplink power offset values corresponding to the individual coding levels. The NCC delivers the uplink power offset values to the UETs which update their local power offset values.Type: GrantFiled: June 19, 2000Date of Patent: July 6, 2004Assignee: Northrop Grumman CorporationInventors: David A. Wright, Dennis A. Nivens, Michael S. Munoz, Reginald Jue, Dominic P. Carrozza
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Patent number: 6760567Abstract: An apparatus and method for measuring the quality of a reverse link and the load of a base station (BTS) in a CDMA mobile telecommunication system. The apparatus and method periodically detect the power of a receiving signal from a mobile station to a BTS, constructs a practical statistical distribution curve for a power ratio of signal to interference, compares the practical distribution curve with the theoretical distribution curve pre-constructed based upon the parameter condition of a BTS, and determines the quality of a reverse link based upon the difference between the distribution curves.Type: GrantFiled: June 29, 2000Date of Patent: July 6, 2004Assignee: SK Telecom Co., Ltd.Inventors: Kyung Soo Jeong, Jong Min Cheong, Taehoon Park, Sang Hoon Seo, Sun Park
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Patent number: 6760568Abstract: A circuit and method for reducing local oscillator frequency transmission in a homodyne, or direct conversion, radio transceiver using I/Q modulation/demodulation minimizes local oscillator leakage to the antenna and its subsequent reception by the receiver by interfacing I/Q input signals to the modulator in a controlled manner so as to increase isolation during reception by presenting high impedance states to the I/Q modulator input terminals during reception thereby nulling the carrier during reception.Type: GrantFiled: May 8, 2001Date of Patent: July 6, 2004Assignee: Motorola, Inc.Inventors: Haim Friedlander, Gadi Shirazi, Jon Dellon
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Patent number: 6760569Abstract: A peripheral equipment for telecommunication is foldable and attachable to a steering wheel of vehicles. More particularly, it is easily mounted onto a steering wheel and extendable for use and foldable for storage. Thus, it will not interfere with the normal operation of a steering wheel and block a driver's visual sight of the gauges on a dashboard of a vehicle. Besides, it permits a driver to extend and fold at random a peripheral equipment for telecommunication, such as automatic fee collecting systems at fee collecting stations, dialing operators of cellular phones, incoming phone indicators and etc. during driving without moving his or her hands off a steering wheel or shifting the driver's view from a moving course. Thereby, drivers can process telecommunication information and drive vehicles safely at the same time. Such a peripheral equipment is made up of an information box and a mount which permit a driver to extend and fold with readiness.Type: GrantFiled: January 19, 2000Date of Patent: July 6, 2004Assignee: E-Lead Electronics Co., Ltd.Inventor: Tonny Chen
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Patent number: 6760570Abstract: A waterproof bag system is described for enclosing a portable field radio that includes a transceiver, an antenna, a handset, and antenna and handset cables to join the antenna and handset to the transceiver. The bag system includes a flexible transceiver bag that has a continuous outer wall enclosing an interior transceiver chamber, a sealable transceiver access opening into the chamber, and sealable antenna and handset cable ports extending through said transceiver bag wall for which the antenna and handset can be connected to the transceiver without leakage. The transceiver bag also includes an antenna mount. The handset is separately enclosed by a flexible handset enclosure having an outer wall defining a handset chamber. A sealable cable opening extends through the handset wall. A section of the face of the handset bag is transparent, as is a section of the transceiver bag, permitting viewing of the interior of each bag.Type: GrantFiled: April 16, 2001Date of Patent: July 6, 2004Inventor: Albert Gene Higdon, Jr.
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Patent number: 6760571Abstract: An RF carrier signal is frequency modulated by a modulating signal, as a function of the amplitude of the modulating signal. The number of cycles in the frequency modulated carrier is counted in a first counter during the positive half cycle of the modulating signal and in a second counter during the negative half cycle of the modulating signal. A microprocessor obtains the difference of the counts in the counters, and from the difference computes the deviation of the modulated carrier from the center frequency of the carrier. This is compared with a desired deviation and the microprocessor calculates and generates a correction signal to vary the amplitude of the modulating signal when the difference between the computed and desired deviation exceeds a predetermined value. An arrangement is also provided whereby, after a calibration procedure, an external source may provide the modulation signal.Type: GrantFiled: December 18, 2001Date of Patent: July 6, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventor: Kenneth M. Prockup
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Patent number: 6760572Abstract: Two fixed-phase-related signals of arbitrary (unequal) magnitude are combined without incurring combining loss by use of a signal reflection technique wherein the higher magnitude signal is phase-synchronously reinforced along its path through the combining system. In a specific embodiment, two signal sources are fed as equal phase signals through respective counter-rotating circulators to a four-port first combiner, wherein the first output port of the combiner is provided with a one-eighth wavelength phase delay to a termination and the second output port is directly terminated, so that reflected signals as seen at both input ports return exactly in phase and of equal magnitude to one another. Thereupon the reflected signals are directed by the respective circulators as phase-synchronized signals to a second combiner which combines the phase synchronized signals into a common output signal. The resultant output is the sum of the inputs irrespective of relative magnitudes of the inputs.Type: GrantFiled: April 2, 2002Date of Patent: July 6, 2004Assignee: Tropian, Inc.Inventor: Basim Noori
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Patent number: 6760573Abstract: Techniques for inner/outer loop tracking that is stable and provides desirable loop convergence characteristics are disclosed. In one aspect, the contribution from any one inner loop to the tracking function of the outer loop is limited, to prohibit any one received signal component from dominating the outer loop. In another aspect, the rate of outer loop tracking variation is controlled to provide inner and outer loop stability. Various other aspects are also presented. These aspects have the benefit of providing stable inner and outer loop control, as well as efficient convergence and tracking by the various loops, resulting in reduced frequency error and improved communication performance.Type: GrantFiled: October 1, 2002Date of Patent: July 6, 2004Assignee: Qualcomm IncorporatedInventors: Parvathanathan Subrahmanya, Jeremy H. Lin
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Patent number: 6760574Abstract: A method for detecting an input signal at a transceiver of a communication system is disclosed, and includes compensating for timing misalignment between when the receipt of the input signal was indicated and when the input signal actually arrived. A signal detector for detecting an input signal and adapted to compensate for timing misalignment is also disclosed.Type: GrantFiled: April 17, 2001Date of Patent: July 6, 2004Assignee: Centillium Communications, Inc.Inventors: Cheng-Youn Lu, Judith Wang
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Patent number: 6760575Abstract: A method and apparatus for synthesizing high-frequency signals, such as wireless communication signals, includes a phase-locked loop (PLL) frequency synthesizer with a variable capacitance voltage controlled oscillator (VCO) that has a discretely variable capacitance in conjunction with a continuously variable capacitance. The discretely variable capacitance may provide coarse tuning adjustment of the variable capacitance to compensate for capacitor and inductor tolerances and to adjust the output frequency to be near the desired frequency output. The continuously variable capacitance may provide a fine tuning adjustment of the variable capacitance to focus the output frequency to match precisely the desired frequency output. The continuously variable capacitance may be formed by using a plurality of separate capacitance circuits. The individual capacitance circuits may include two capacitors coupled to a variable resistance element.Type: GrantFiled: October 9, 2001Date of Patent: July 6, 2004Assignee: Silicon Laboratories, Inc.Inventor: David R. Welland
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Patent number: 6760576Abstract: In a variable rate wireless communication system, an explicit reduced-bit rate indicator is used to communicate the data rate and configuration of the transmission to the receiver. Data throughput is increased by reducing the number of bits required to indicate data rate and channel configuration. Related allocation of total transmit power, and related receive processing are conserved. Reception is enhanced by increased probability of correct decoding. Receiver performance is enhanced by reducing the probability of false erasures and associated outerloop setpoint adjustment errors when the receiver is notified of channels with zero data rates. Power consumption is reduced by using fewer bits to communicate data rate and channel configuration information, and by more accurate setpoint adjustment.Type: GrantFiled: March 27, 2001Date of Patent: July 6, 2004Assignee: Qualcomm IncorporatedInventor: Tao Chen
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Patent number: 6760577Abstract: Alignment methods and apparatus for I/Q phase and amplitude error correction and image rejection improvement that may be used at the time of circuit fabrication or on chip for use during operation. The alignment method may be used to improve the I/Q phase and amplitude accuracy of a direct conversion transceiver or to improve image rejection in an up or downconversion mixer. For alignment purposes, a pilot tone of a selected frequency is used to provide a calibration reference, with adjustments being made in phase and amplitude to drive the I and Q phase and amplitude mismatch toward a minimum.Type: GrantFiled: March 29, 2001Date of Patent: July 6, 2004Assignee: Maxim Integrated Products, Inc.Inventor: Frank Xiaohui Li
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Patent number: 6760578Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: GrantFiled: July 2, 2001Date of Patent: July 6, 2004Assignee: Micron Technology, Inc.Inventor: Robert R. Rotzoll
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Patent number: 6760579Abstract: The present invention provides a mobile receiver, whereby the power consumption can be kept as lower as possible, as the size of the automobile equipment control system, the placement space thereof and the cost can be reduced, since an antenna and part of receiving circuits for keyless entry system are also used as those of a mobile radio receiver. Moreover, in order to prevent the users from feeling inconvenience in its use, the mobile receiver has a construction wherein a mixing circuit, a local oscillator circuit and the like for keyless entry system and those for radio receiver are separately arranged though the antenna and an intermediate frequency amplifier circuit are used both for keyless entry system and for radio receiver. As a result, signals from the remote control side can be received even while someone is listening to the radio.Type: GrantFiled: November 29, 1999Date of Patent: July 6, 2004Assignee: Fujitsu Ten LimitedInventors: Masaho Yokoyama, Manabu Horimoto
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Patent number: 6760580Abstract: A method, system and computer program product for instant message communication in a wireless and non-wireless environment. The invented system includes an apparatus that facilitates conversation with individuals not included in the user's buddy group, non-buddies. The system includes at least one additional routing code reserved for conversing with non-buddies. The first time during a user session that the system receives a message originating from or destined for a non-buddy, before routing the message, the non-buddy's personal identifier is associated with one of the reserved routing codes. The mobile user can then reply to the message using the same automated ‘reply’ function available for replies to buddies. The non-buddy routing code assignment is only for the duration of a user session. When the mobile user signs off from the system, the routing code becomes available for reassignment.Type: GrantFiled: April 1, 2002Date of Patent: July 6, 2004Assignee: America Online, IncorporatedInventors: B. Alex Robinson, Charles A. Carey, Michael Longe, Joe Parr
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Patent number: 6760581Abstract: A system and method for providing a hold operation from a mobile telephone. When a call is received and the mobile telephone user cannot readily answer the phone, he presses a “hold” key on the mobile telephone. The hold key plays a message to the caller informing the caller that the receiver intends to answer the call momentarily. In this manner, calls received in places where mobile telephone calls are discouraged or prohibited can be placed on hold until the receiver has moved to a location where he can answer the call. For example, in a theater incoming calls can be held so the user can move to a hallway where he can answer the call and talk to the caller. Wireless technology (Bluetooth) is used to automatically hold calls when the mobile telephone receives a command from a server that installed in the theater or other public place.Type: GrantFiled: March 26, 2001Date of Patent: July 6, 2004Assignee: International Business Machines CorporationInventor: Rabindranath Dutta
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Patent number: 6760582Abstract: A method and apparatus for testing assisted position location capable devices that includes providing a position determination entity (PDE) simulator that is in communication with a base station simulator simulating one or more base stations and connecting an assisted position location capable device under test (DUT) to the base station simulator and a global positioning system (GPS) simulator. Then, initiating a test sequence wherein the DUT receives a set of predetermined GPS signals and at a desired time the DUT requests assistance data from the base station simulator and the base station simulator requests assistance data from the PDE simulator, wherein the PDE simulator provides data that is independent of the GPS simulator data to the base station and the base station transfers the PDE data to the DUT. The PDE data is a set of predetermined responses to any one of a plurality of DUT requests indexed by elapsed test time.Type: GrantFiled: February 4, 2002Date of Patent: July 6, 2004Assignee: Qualcomm IncorporatedInventor: Peter Gaal
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Patent number: 6760583Abstract: A portable mobile unit for conducting information communication by using at least one of character information and picture information, comprising: a sound source being enable to generate a plural number of sounds; an input means for inputting a kind an a condition of the sound to be generated; and a controller means for controlling said sound source upon basis of the input from the input means, and for controlling processing when conducting said information communication, wherein said controller means makes the kind of sound which is set by the input made from said input means generate under the condition which is set by the input made from said input means, during a connecting process to a communicating party of said information communication or during the information communication. With this, there is provided the portable mobile unit, which also supplies aural information to the user when communicating visual information, such as character information or picture information, etc.Type: GrantFiled: February 27, 2001Date of Patent: July 6, 2004Assignee: Hitachi, Ltd.Inventors: Jun Ito, Hisao Kuramoto
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Patent number: 6760584Abstract: A system for accessing broadcast SMS messages over a wireless communication system. A base station transmits SMS messages periodically and aperiodically over a broadcast channel. The base station allocates periodic slots in the broadcast channel for each of the subscriber services providing the SMS messages and transmits slot parameters to mobile units. Using the slot parameter information, the mobile units periodically wake up to scan the broadcast channel. The period for each category of broadcast SMS messages may be different and the period may apply to a single broadcast channel. Messages arriving aperiodically can be queued and transmitted in pre-scheduled broadcast channel frames. Messages with inter-arrival interval greater than the specified transmission period are simply repeated.Type: GrantFiled: November 8, 2002Date of Patent: July 6, 2004Assignee: Qualcomm, IncorporatedInventor: Yu-Cheun Jou
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Patent number: 6760585Abstract: In a network comprising call handling services for mobile users, services being requested by the mobile user for an active call and wherein each user registers for services with a personal identification number (PIN), a method for updating said personal identification number during an active call, the steps of said method comprising: registering user initially with the network for services with user's personal identification number during an active call; signalling a user preference to update the personal identification number; and updating user's personal identification number during said active call.Type: GrantFiled: May 25, 2000Date of Patent: July 6, 2004Assignee: Siemens Information and Communication Networks, Inc.Inventors: Peggy M. Stumer, Dennis L. Kucmerowski
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Patent number: 6760586Abstract: A system and method for processing external handover of Digital Enhanced Cordless Telecommunication (DECT) line cards in a private switching system are disclosed. The DECT system in a private switching system has a plurality of DECT line cards, which are divided into a master line card and slave line cards, so as to perform the signaling protocol for the handover between the subscribers accommodated in the different DECT line cards without a CCFP. The method includes setting at least one DECT line card as a master line card, and setting the remaining cards as slave line cards, setting at least one Burst Mode Controller (BMC) as a master BMC and the remaining ones as slave BMCs, and generating a synchronous clock in the master BMC. The synchronous clock is applied to the slave BMCs, and signaling protocol information is analyzed in the master line card. The analyzed result of the information is provided to each of the slave line cards in accordance with the synchronous clock.Type: GrantFiled: September 8, 2000Date of Patent: July 6, 2004Assignee: LG Electronics Inc.Inventor: Kon Ju Lee
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Patent number: 6760587Abstract: A method and apparatus for scheduling transmit rates and power levels for data in conjunction with a voice-data communication during conditions of soft and softer handoff. During conditions of no handoff, or hard handoff, an algorithm selects a slot reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel. The slot is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The algorithm applies to softer handoff using information from all the sectors of a base station involved in the softer handoff. During soft handoff, instead of scheduling forward link transmission based on recent power and rate, or C/I information, data is continuously transmitted to the user at a power level based on average required power.Type: GrantFiled: February 23, 2001Date of Patent: July 6, 2004Assignee: Qualcomm IncorporatedInventors: Jack M. Holtzman, Gang Bao
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Patent number: 6760588Abstract: A mobile communication system includes a plurality of base stations in a communication service area connected to a packet communications network. A mobile station communicates with a second station through the plurality of base stations and the network. The mobile communication system determines a virtual base station group as an aggregation of the plurality of base stations communicating with the mobile station, based on a condition of a radio transmission path between the mobile station and each base station, and combines information received by the plurality of base stations that belong to the virtual base station group at a base station included in the virtual base station group. The network connects the plurality of base stations non-hierarchically and the base station transmits combined information to the second station through the network relative to combined packets having the second station as a destination.Type: GrantFiled: December 27, 2000Date of Patent: July 6, 2004Assignee: NTT DoCoMo, Inc.Inventors: Ichiro Okajima, Narumi Umeda, Yoshifumi Suzuki, Yasushi Yamao
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Patent number: 6760589Abstract: The invention relates to a method of and apparatus streamlining in a communication system with a separate core network (201) and access network (203). The access network comprises at least two access systems (205, 207) receiving a plurality of data streams which are combined before being routed to the core network (201). The streamlining is performed by setting up a connection from a second radio access system to the core network in parallel to the current connection from a first radio access system followed by combining the received data streams into two combined data streams and simultaneously routing one data stream through each of the two parallel connections. The core network will then switch from the first to the second connection and the first connection is subsequently terminated. The invention is applicable but not limited to the Universal Mobile Telecommunication System (UMTS) currently under development.Type: GrantFiled: April 6, 2001Date of Patent: July 6, 2004Assignee: Motorola, Inc.Inventor: Kevan Hobbis
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Patent number: 6760590Abstract: A communication mode determination section 201 determines the communication mode based on the CIR measured by a CIR measurement section 219; a DRC signal creation section 202 creates a DRC signal with a number corresponding to the communication mode; and a DRC power controller 205 refers to a transmission power table 206 showing the correspondence between DRC numbers and transmission power, and, based on the transmission power of the pilot signal output from a pilot power controller 209, increases transmission power in proportion as the DRC signal indicates that downlink channel quality is good.Type: GrantFiled: April 1, 2002Date of Patent: July 6, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenichi Miyoshi, Osamu Kato, Junichi Aizawa
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Patent number: 6760591Abstract: In order to determine a position of a transmitter in three dimensions, a signal transmitted by the transmitter is received by four receivers that are separated from one another in three dimensions and are not all disposed on the same plane. In which case the time intervals between a reception of the signal by the four receivers are used to determine the position of the transmitter, taking into account the configuration of the receivers and a propagation speed of the signal in space.Type: GrantFiled: May 22, 2000Date of Patent: July 6, 2004Assignee: Siemens AktiengesellschaftInventor: Jürgen Klinger
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Patent number: 6760592Abstract: The present invention relates generally to a system and method for determining the earliest time of arrival of a received signal in a wireless communications system. In particular, the present invention relates to a system and method for de-rotation of the carrier phase of a received signal to offset the effects of combining a received line-of-sight signal with various received multipath artifacts that may shift the complex phase of the received signal. The system and method of the present invention can improve the accuracy of the estimated time of arrival of a received signal by computing the time of arrival of the received signal at numerous different phase references and identifying the earliest of the computed times of arrival.Type: GrantFiled: January 7, 2003Date of Patent: July 6, 2004Assignee: Symbol Technologies, Inc.Inventors: David Hernandez, David Goren, Benjamin Bekritsky
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Patent number: 6760593Abstract: In a cellular communication network, capacity in a cell is increased by placing antennas transmitting different signals on the same carrier frequency at separated signal transmission and virtual site locations in the cell, rather than at the center of the cell. A receiver includes multiple antennas using spatial diversity, such as beamforming and cancellation, to extract the desired signal.Type: GrantFiled: March 13, 2000Date of Patent: July 6, 2004Assignee: AT&T Corp.Inventor: Peter Frank Driessen
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Patent number: 6760594Abstract: A method of connection of a priority call in a wireless communication system able to assign channels making full utilization of system resources and to thereby prevent failure of connection (call loss) of an emergency call or other priority call, which sets a maximum threshold Th.III between a critical threshold Th.IV constituting an upper limit, in terms of hardware, on the number of calls able to be assigned channels in a wireless section, and a design threshold Th.II constituting an upper limit, in terms of software design. It assigns a priority call a channel and connects the call to the exchange side even if the total number of calls exceeds the design threshold Th.II, but if it determines that it is smaller than the maximum threshold Th.III, performs breathing when the total number of calls exceeds the design threshold Th.II, and sends a standby instruction message to the terminal side when it determines that the total number of calls has exceeded the maximum threshold Th.III.Type: GrantFiled: June 28, 2000Date of Patent: July 6, 2004Assignee: Fujitsu LimitedInventors: Shunichi Murasawa, Ryoichi Ishibashi
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Patent number: 6760595Abstract: A method for providing interactive audience participation at live spectator events enhances enjoyment for a plurality of spectators. Participating spectators employ wireless interactive devices that present a promotional message and include user input and output interfaces. Spectators are queried, and enter answers via the user input interface. The answers are transmitted to a central processor, stored as spectator data, and processed into results. A visual display or the user output interface announces the results to the spectators.Type: GrantFiled: March 5, 2003Date of Patent: July 6, 2004Inventor: Eric Inselberg
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Patent number: 6760596Abstract: A mobile station decreases its transmit bit rate in response to a determination that its transmit power has exceeded an alarm-power threshold. The mobile station increases its bit rate in response to a determination that its transmit power is below a lower-power threshold. Lower-power threshold and alarm-power threshold delays can be employed to prevent ping-pong effects and avoid unnecessary throughput degradation. A dynamic lower-power threshold can be employed in which the mobile station estimates or predicts its transmit power if it were to increase its transmit bit rate and increases its transmit bit rate only if this can be performed without exceeding the alarm-power threshold.Type: GrantFiled: November 22, 2000Date of Patent: July 6, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Andrea Fiorini, Magnus Karlsson, Luca Vignali
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Patent number: 6760597Abstract: A power control method for reverse links used in soft handoff mode between a mobile and base stations of a CDMA wireless communication network. Each of the base stations computes a setpoint based on the quality of received frames. The lowest setpoint value is then used as a threshold for inner loop operation causing at least one of the reverse links to convey information in compliance with a target FER set by the network.Type: GrantFiled: December 8, 2000Date of Patent: July 6, 2004Assignee: Lucent Technologies Inc.Inventors: Alexandro Salvarani, Carl Francis Weaver
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Patent number: 6760598Abstract: A method, device and system, for determining downlink transmission power step size for both UP and DOWN transmission power control commands (TPC). The method, device and system use reception quality and a plurality of thresholds to determine these step sizes. Provision is made for determining step size and the TPC command values when the TPC command is evaluated to be erroneous and when reception quality is less than a minimum threshold value.Type: GrantFiled: May 1, 2002Date of Patent: July 6, 2004Assignee: Nokia CorporationInventor: Janne Kurjenniemi
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Patent number: 6760599Abstract: In one embodiment, the present invention comprises receiving a first broadcast burst from a first base station of a radio communications system, the first broadcast message including a first broadcast information sequence representing the power with which the first broadcast burst was transmitted, and measuring the received signal strength of the first broadcast burst. The invention further comprises receiving a second broadcast burst from a second base station of the radio communications system, the second broadcast burst including a second broadcast information sequence representing the power with which the second broadcast burst was transmitted, and measuring the received signal strength of the second broadcast burst. The invention further includes selecting a base station of the radio communications system for communication of data based on the first and second broadcast information sequence and the received signal strength of the first and second broadcast bursts.Type: GrantFiled: September 29, 2000Date of Patent: July 6, 2004Assignee: ArrayComm, Inc.Inventor: Christopher Richard Uhlik
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Patent number: 6760600Abstract: A personal computer apparatus includes a portable computer, a cellular telephone which can be connected to the portable computer, and a pager which can be connected to the cellular telephone. The portable computer, the cellular telephone, and the pager each have an independent power supply and are each detachable from the apparatus for individual functionality. When connected, the cellular telephone and pager can be coupled to the power supply of the portable computer.Type: GrantFiled: January 27, 1999Date of Patent: July 6, 2004Assignee: Gateway, Inc.Inventor: Larry A. Nickum
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Patent number: 6760601Abstract: An apparatus for providing information services to a user includes a microserver disposed at the user's home or office. The microserver is connected to a communication network which is connected to a global computer network, and the user's mobile or fixed telephone terminal. At least one service server is connected to the user's mobile or fixed terminal via the global computer network, the communication network and the microserver. Through the disposition of microserver at the user's primary location, the service server can transmit general or user specific service information to the user via their mobile and/or fixed terminal. The problems of localization of the user are eliminated by the implementation of the microsever at the user's primary communication location.Type: GrantFiled: November 29, 1999Date of Patent: July 6, 2004Assignee: Nokia CorporationInventors: Marko Suoknuuti, Heikki Rautila
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Patent number: 6760602Abstract: Method and apparatus for toggling service options after completion of call setup, is disclosed for use in a wireless communication system. A service option preferred by the base station (30, 32) or other portion of the system infrastructure is compared to service option capabilities of the mobile station (26) requesting service. If the mobile station (26) is capable of accommodating the service option preferred by the base station (30, 32), a service connect message (64) is sent to the mobile station (26) to initiate toggling of the service option.Type: GrantFiled: December 22, 2000Date of Patent: July 6, 2004Assignee: Motorola, Inc.Inventors: Philip P. Tangorra, Christopher R. Schmidt
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Patent number: 6760603Abstract: A wireless communication system base station uses a dual-polarized antenna array to receive two signal groups having orthogonal polarizations. In a preferred embodiment a first signal group is received using a first sub-array of odd-numbered antenna elements, while a second signal group is received using a second sub-array of even-numbered antenna elements. Dipoles within the odd-numbered elements are selected so that they have a common polarization orthogonal to the dipoles selected in the even-numbered elements. The two signal groups thus have orthogonal polarizations. Base station signal processing hardware performs separate spatial channel estimation for these two groups, and uses the polarization diversity to improve performance in both the uplink and downlink. The use of polarization diversity allows the physical dimensions of the antenna array to be kept to a minimum.Type: GrantFiled: February 10, 2003Date of Patent: July 6, 2004Assignee: Kathrein-Werke KGInventors: Shimon B. Scherzer, Piu Bill Wong