Patents Issued in March 18, 2008
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Patent number: 7346291Abstract: A developing device and an image forming apparatus having the same are provided. The developing device includes: a housing, which is formed by coupling an upper case and a lower case and in which a developing roller and a regulating blade are installed; sealing elements, which are respectively formed at both sides of the developing roller or the regulating blade and prevent toner from leaking out of the housing; and fixing elements, which fix the sealing elements in the housing so that the sealing elements cannot move. Each of the fixing elements includes a supporting element, which expands the area of a corresponding fixing element and supports the corresponding sealing element by pushing the corresponding sealing element toward the regulating blade and the developing roller so that the corresponding sealing element comes into contact with the regulating blade and the developing roller.Type: GrantFiled: August 9, 2005Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Young-min Kim, Su-in Lee
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Patent number: 7346292Abstract: Systems and methods of remanufacturing an imaging cartridge including the replacement an organic photo conductor (OPC) drum in the imaging cartridge having end caps which are fixedly secured to the waste bin or other portion of the toner cartridge. In one aspect, the method involves removing the existing OPC drum without detaching the end caps and installing a replacement OPC drum without disturbing the end caps.Type: GrantFiled: July 28, 2005Date of Patent: March 18, 2008Assignee: Static Control Components, Inc.Inventors: James R. Williams, Donald R. Huck, James H. Jones, Anthony D. Causey, Thomas J. Martin
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Patent number: 7346293Abstract: A cartridge is detachably mountable to an electrophotographic-image-forming-apparatus main assembly including light emitting and receiving portions. The cartridge includes an electrophotographic photosensitive drum, a developing member, a driving force receiving portion, first and second rotatably connected frames, the first supporting the drum and having a memory, and the second supporting the developing member and having a developer accommodating portion, a main-assembly-contactable electrical contact, first and second light guides whose respective entrance and exit are opposable to the emitting and receiving portions, respectively, first and second cartridge positioning portions engageable with first and second main assembly positioning portions, and a cartridge limiting portion abutting a main assembly regulating portion to limit rotation of the cartridge which otherwise occur about the cartridge positioning portions when the driving force receiving portion receives a driving force from the main assembly.Type: GrantFiled: December 5, 2006Date of Patent: March 18, 2008Assignee: Canon Kabushiki KaishaInventors: Tatsuya Suzuki, Nobuharu Hoshi, Kazunari Murayama
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Patent number: 7346294Abstract: An image forming apparatus includes a main body frame, an image forming unit disposed inside of the main body frame to form an image, a door unit disposed in such a manner to make a conjoin rotation to thereby approach to a paper transfer path disposed inside of the main body frame, a roller assembly disposed on the paper transfer path, and an opening and closing coupling unit to couple the door unit with the roller assembly, wherein the roller assembly is opened/closed when the door unit is opened/closed.Type: GrantFiled: October 13, 2005Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Bong-hee Lee
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Patent number: 7346295Abstract: A belt member of the present invention includes ribs that prevent the belt member from being shifted to either side. A plurality of cuts are formed in each rib at preselected intervals in the circumferential direction of the belt member, and each extends from the top toward the bottom of the rib. The cuts may be replaced with projections and recesses alternating with each other in the cicumferential direction of the belt member or bores formed at preselected intervals in the above direction. Such ribs allow, without being subject to a heavy load, the belt member to be wrapped around a support roller with a large curvature or bent in the inverse direction. This reduces deterioration and slippage ascribable to the position of the belt member desirable for the size reduction of an apparatus on which the belt member is mounted.Type: GrantFiled: January 18, 2005Date of Patent: March 18, 2008Assignee: Ricoh Company, Ltd.Inventor: Hideaki Mochimaru
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Patent number: 7346296Abstract: A developing device of an image forming apparatus has an image carrier rotating in confrontation with a developer conveyer and developing the surface of the image carrier with a developer moved by the developer conveyer. A rotating member is rotatably formed adjacent to the image carrier and generates an opposite air current to an air current generated as the image carrier and the developer conveyer are rotated. A power transmission unit transmits power of the image carrier to the rotating member.Type: GrantFiled: January 9, 2006Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Su-in Lee, Ji-won Moon
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Patent number: 7346297Abstract: A developing cartridge including: a developing part having a developer bearing member; a developer container which is constituted by coupling a container body having an opening part and a developer supplying port, and a lid member for closing the opening part, and which houses developer therein; and a developer stirring member which stirs the developer inside this developer container and supplies the developer to the developer bearing member, wherein the shape and the capacity of the developer container are changed by changing the shape of the lid member.Type: GrantFiled: July 27, 2005Date of Patent: March 18, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Tomoyuki Kawakami, Akihiro Kasuga
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Patent number: 7346298Abstract: A developing device includes a developer container divided into a developing section and a mixing section in which developer is conveyed in the opposite directions. A conveying member which conveys the developer in the longitudinal direction is disposed only in the developing section, and a mixing member which does not positively convey the developer in the longitudinal direction is disposed in the mixing section.Type: GrantFiled: March 29, 2005Date of Patent: March 18, 2008Assignee: Canon Kabushiki KaishaInventors: Seiji Yamaguchi, Tachio Kawai, Syuhei Kawasaki, Issei Imamura
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Patent number: 7346299Abstract: A developer container storing a developer of the present invention includes a developer outlet formed in the side wall thereof, and a shutter member for selectively opening or closing the developer outlet. The shutter member opens the developer outlet when the developer container is mounted to the body of an image forming apparatus or closes it when the former is dismounted from the latter. The toner container with this configuration surely prevents the developer from leaking when the developer container is dismounted from an image forming apparatus.Type: GrantFiled: April 22, 2004Date of Patent: March 18, 2008Assignee: Ricoh Company, Ltd.Inventors: Satoshi Muramatsu, Junichi Matsumoto, Nobuo Kasahara, Nobuo Iwata
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Patent number: 7346300Abstract: A developing apparatus having a developer carrying member carrying developer including toner, a developer regulating member regulating the layer thickness of the developer carried on the developer carrying member, and a lubricant provided in a contact portion between the carrying member and the regulating member with the developer being not present on the carrying member, wherein the lubricant includes a first polymer particle which is of a spherical shape having an average degree of circularity of 0.90 or greater and is of a polarity opposite to the charging polarity of the toner, and a second polymer particle of a scalelike shape and of the same polarity as the charging polarity of the toner.Type: GrantFiled: October 5, 2005Date of Patent: March 18, 2008Assignee: Canon Kabushiki KaishaInventors: Satoru Inami, Daisuke Baba, Masahito Kato
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Patent number: 7346301Abstract: The invention realizes a uniform toner coating on a developing roller, thereby preventing a density unevenness and a toner dripping and suppressing a developing roller set mark image in a contact developing method, by conditions that the DC voltage applied to the developer regulating member is the same as the DC voltage applied to the developer carrying member or at a side of a charging polarity of the developer with respect to the DC voltage applied to the developer carrying member; and a frequency f (Hz) and a peak electric field strength E (V/m) of the AC electric field formed by the AC voltage between the developer regulating member and the developer carrying member, and a peripheral speed v (m/s) of the image bearing member satisfy conditions: 4.2×v?f?2500 and 2.2×106?E?5.2×106.Type: GrantFiled: February 13, 2006Date of Patent: March 18, 2008Assignee: Canon Kabushiki KaishaInventors: Kazunori Hashimoto, Takayuki Kanazawa
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Patent number: 7346302Abstract: A color image forming apparatus wherein the pre-secondary transfer electric charge eliminating device arranged intermediate between a primary transfer section and a secondary transfer section is provided with: a discharge electrode arranged on the side opposite to the toner carrier surface of an intermediate transfer member; and a counter electrode containing a discharge electrode and a conductive elastic member arranged at the opposed position beyond the intermediate transfer member so as to be pressed against the intermediate transfer member; wherein the pressing force of the aforementioned counter electrode against the rear surface of the intermediate transfer member is distributed in such a way that the pressure for the center of the intermediate transfer member is smaller than that for both ends thereof, in the transversal direction to the direction in which the intermediate transfer member rotates.Type: GrantFiled: December 28, 2005Date of Patent: March 18, 2008Assignee: Konica Minolta Business Technologies, Inc.Inventors: Yotaro Sato, Takenobu Kimura
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Patent number: 7346303Abstract: In a color laser printer, in which phases of periodic variations in abutting position speeds of photoconductor drums and timings of transfer of toner images to a medium are synchronized, the variation in speed of the medium due to periodic variations of the abutting position speeds are reduced. In the color laser printer, in which a medium is moved while being abutted by four photoconductor drums, and thereby toner imaged carried by the photoconductor drums are superimposingly transferred to the medium, the photoconductor drums are arranged such that the distance between neighboring two abutting positions of the photoconductor drums with the medium is three or five times a value obtained by dividing a circumferential length of the outer circumferential surface of each of the image carriers by the number of the carriers.Type: GrantFiled: March 11, 2005Date of Patent: March 18, 2008Assignee: Brother Kogyo Kabushiki KaishaInventor: Yasushi Okabe
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Patent number: 7346304Abstract: A guiding member is disposed at a frame upstream of a transfer roller in a conveying direction, thereby guiding a recording medium to a transfer position. The guiding member has front and back surfaces. A guiding portion of the guiding member is configured to contact the recording medium for guiding the recording medium to the transfer position. The base portion is positioned upstream of the guiding portion in the conveying direction. The base portion is formed with at least one through-hole having an inner edge. The frame includes a supporting portion and a protruding portion. The supporting portion is configured to contact the back surface of the guiding member, thereby supporting the guiding member. The protruding portion protrudes through the at least one through-hole and engages with the inner edge, thereby fixing the base portion of the guiding member to the frame.Type: GrantFiled: April 25, 2006Date of Patent: March 18, 2008Assignee: Brother Kogyo Kabushiki KaishaInventor: Takeyuki Takagi
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Patent number: 7346305Abstract: A fixing apparatus includes a fixing member to be heated and a pressure-contacting member for pressure contacting the fixing member. The fixing apparatus directs and conveys a recording member through a nip formed between the fixing member and pressure applying member in such a manner that a toner image carried on a recording member contacts the fixing member in order to be fixed thereto with heat and pressure. The fixing apparatus is configured to direct a tip margin of the recording member toward the pressure applying member across a virtual linear extension line drawn from a downstream end to upstream end of the nip when only the tip margin exits from the nip. A fixing member side separation device may be separately provided from the surface of the fixing apparatus so as to separate the recording member exiting from the nip. A gap formed between the downstream end of the nip and the tip of the fixing member side separation device is set smaller than the width of the tip margin.Type: GrantFiled: November 7, 2006Date of Patent: March 18, 2008Assignee: Ricoh Company, LtdInventors: Hisashi Kikuchi, Shigeo Kurotaka, Kiyoshi Ohshima, Takashi Fujita, Toshihiko Baba, Atsushi Nakafuji, Hirokazu Ikenoue, Jun Yura, Katsuhiro Echigo, Hideki Kosugi
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Patent number: 7346306Abstract: A fixing device built in an electrophotographic image forming apparatus and a temperature control method for the fixing device are provided. The fixing device comprises a power supplying unit for supplying power to the fixing device; a control variable determination unit for determining control variables corresponding to operating states of the fixing device, wherein the control variables are used to control a temperature of the fixing device; a temperature detection unit for detecting the temperature of the fixing device; and a temperature control unit for controlling the temperature of the fixing device by using the control variables, wherein the temperature control unit comprises a duty ratio adjustment unit for adjusting a duty ratio of the supplied power based on the determined control variables. In addition, the control variable determination unit determines the control variables corresponding to at least one of a plurality of operating states.Type: GrantFiled: December 22, 2005Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Myong-hun Cho
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Patent number: 7346307Abstract: In an image forming apparatus that uses toners of a plurality of different colors, amorphous toner is used during image forming with a first color. Then, a controller, by using a toner remaining-removing switching device, causes toner scraped off from an image carrier by a blade during cleaning to remain at a predetermined region near the blade. Spherical toner is used during image forming with a second color and thereafter. The controller switches the toner remaining-removing switching device during any one of processes starting from the process of the second color until the end of image formation to remove toner remaining at the predetermined region, and the toner subsequently scraped off, from the image carrier.Type: GrantFiled: December 7, 2005Date of Patent: March 18, 2008Assignee: Kyocera Mita CorporationInventors: Mitsunobu Honda, Minoru Wada, Eiji Gyoutoku, Hisashi Mukataka
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Patent number: 7346308Abstract: A cleaning device including a cleaning brush configured to clean a surface of a moving member while contacting and facing the surface; and a cleaning blade which is located on a downstream side from the cleaning brush relative to a moving direction of the moving member while being substantially opposed to the cleaning brush and which is configured to clean a cleaning region of the surface of the moving member while contacting the surface of the moving member, wherein the cleaning brush contains a powder when the cleaning brush is brand-new.Type: GrantFiled: September 14, 2005Date of Patent: March 18, 2008Assignee: Ricoh Company LimitedInventor: Hiroomi Harada
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Patent number: 7346309Abstract: The invention provides an image forming system which includes an image forming device and a post-processor, and complete warming-up of the image forming device in a short time with a limited power supply. The invention further provides an image forming system which includes an image forming device and a post-processor, and enables saving consumption power consumed by the heating section of the post-processor if the heating section is used at long intervals. The invention yet further provides an image forming system which has an image forming device and a bookbinding device, and reduces the maximum consumption power, with a simple structure.Type: GrantFiled: June 2, 2005Date of Patent: March 18, 2008Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hideki Nakamura, Eiji Sugimoto
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Patent number: 7346310Abstract: A method for the verification of anti-jamming in a communications system comprises several sensors or adaptive antennas, comprising at least the following steps: estimating the mean power ?;^y of the output of the communications system, estimating the respective power values Pu or P?u, of a station u, the antenna noise Pa or P?a, the thermal noise PT, or P?T, estimating at least one of the following ratios: J tot ? / ? S tot = ( ? p = 1 P ? P p ) ? / ? ( ? u = 1 U ? P u ) J tot ? / ? S u = ( ? p = 1 P ? P p ) ? / ? P u J u ? / ? S u = ( ? p = 1 P ? P pu ) ? / ? P u comparing at least one of the three ratios with a threshold value.Type: GrantFiled: November 21, 2003Date of Patent: March 18, 2008Assignee: ThalesInventors: Pascal Chevalier, Béatrice Col, Fréderique Lasnier
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Patent number: 7346311Abstract: A novel single frequency repeater is disclosed that eliminates the problems of feedback and concurrent oscillation. The single frequency repeater of the present invention comprises a backplane, a first antenna, a filter, an amplifier, a power supply, a switch, and a second antenna. The first antenna, filter, amplifier, power supply, and switch are mounted to one side of the backplane. Preferably, the backplane is electrically grounded. The second antenna is mounted on the second side of the backplane, in an orthogonal direction to the first antenna on the first side of the backplane. By placing the first antenna in the back lobe of the second antenna, separating the first antenna and the second antenna with the grounded backplane, and mounting the second antenna in an orthogonal orientation to the first antenna, problems with feedback and concurrent oscillation have been overcome.Type: GrantFiled: April 25, 2005Date of Patent: March 18, 2008Assignee: The United States of America as represented by the National Security AgencyInventor: Hugh Warren Schwartz
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Patent number: 7346312Abstract: A Wireless Neural Data Acquisition System for increased power efficiency, compact size, robust signaling and reliable transmission is shown and described. In one embodiment, the system includes a headstage, an RF receiver, an analog-to-digital converter, a digital signal processor, and a communication interface. The headstage includes at least one input pre-amplifier high-pass filter and amplifier, a multiplexer (MUX), an RF Modulator comprising a voltage control oscillator (VCO), a transmitting antenna, and a power supply. The RF receiver includes at least one receiving antenna, at least one bandpass filter, at least one amplifier, at least one attenuator, and an FM Demodulator.Type: GrantFiled: October 23, 2004Date of Patent: March 18, 2008Assignee: Triangle BioSystems, Inc.Inventors: Pedro Irazoqui-Pastor, James C Morizio, Vinson L Go, Jack D Parmentier
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Patent number: 7346313Abstract: Transceivers using direct conversion between baseband and RF have become popular for low-cost designs. Bandwidth-efficient modulations employ information on both phases of the carrier, and for high-order signaling alphabets, it becomes problematic to realize Direct-Conversion transceivers for which adequate gain balance between I and Q channels throughout the transmit and receive chains. For heterodyne transceivers I-Q balance is often less of an issue, by contrast, because most of the required gain operates at an Intermediate Frequency. In both cases, the trend toward lower supply voltages further exacerbates this problem because of the poorer control of analog parameters at low voltage. The present invention addresses this difficulty via a calibration method and system in which a calibration signal is generated in the transmit stage and injected into the receive stage so that any mismatches in gain can be observed and corrected.Type: GrantFiled: March 4, 2003Date of Patent: March 18, 2008Inventor: John H. Cafarella
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Patent number: 7346314Abstract: A method and apparatus to provide a deterministic power control mechanism for the transmission of mobile station power control commands based on transmitting non-power control commands for which mobile stations exhibit deterministic, observable responses at related transmit powers, e.g., at the same power. For example, a wireless network base station may adjust the target used for sending power control commands to a given mobile station by observing whether that mobile station correctly responds to rate control or retransmit control commands sent at the same transmit power. The mobile station's response (or non-response) to such non-power control commands is readily observable and can be taken as an indication of whether the power target is sufficient for current radio conditions. Although not so limited, this approach may be particularly beneficial where non-power control commands are sent along with the power commands on a sub-channel of a common power control channel.Type: GrantFiled: January 30, 2004Date of Patent: March 18, 2008Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Shiau-He Shawn Tsai, Anthony C. K. Soong, Young C. Yoon
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Patent number: 7346315Abstract: Loudspeaker systems for handheld devices (2400, 2500) such as cellular telephones (100, 1400, 1600, 1900) are provided. The loudspeaker systems include at least one omnidirectional monopole loudspeaker (404, 1504, 1802, 1918, 1920) and at least one dipole loudspeaker (402, 1502, 1804, 1914, 1916). Filtering is used to compensate for differences between electric-to-acoustic signal transfer functions of the loudspeakers in order to achieve destructive interference of emitted audio in one direction and reinforcement in another direction. Various loudspeaker systems that are reconfigurable from directional mode, to omnidirectional mode are provided. Filtering is also used to add a frequency dependent phase to one signal in order to alter a direction of maximum sound pressure level. Two monopole-dipole pairs can be used to produce a stereo effect. The monopole and dipole loudspeakers can be housed in a detachable loudspeaker accessory (200).Type: GrantFiled: March 30, 2004Date of Patent: March 18, 2008Assignee: Motorola IncInventors: Robert A. Zurek, Simone Koo
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Patent number: 7346316Abstract: In a transmitter 2A, after an output level of a modulated signal is regulated by a first gain regulator 5A, the signal is transmitted from a first antenna 8A without delay, and after the modulated signal is delayed by a delay unit 6A and an output level of the delay output is regulated by a second gain regulator 7A, this signal is transmitted from a second antenna 9A. Similarly, in a transmitter 2B, after an output level of a modulated signal is regulated by a first gain regulator 5B, the signal is transmitted from a first antenna 8B without delay, and after the modulated signal is delayed by a delay unit 6B and an output level of the delay output is regulated by a second gain regulator 7B, this signal is transmitted from a second antenna 9B. A receiver 3 receives the transmitted signals from the four antennas 8A, 8B, 9A and 9B via an antenna 10, and executes a demodulation process.Type: GrantFiled: October 6, 2000Date of Patent: March 18, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroshi Kubo
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Patent number: 7346317Abstract: Methods and apparatus are provided for gain and phase compensation in a radio frequency (RF) transmitter (108). The RF transmitter (108) has at least one power amplifier (PA) (205) for providing a transmitted signal having a signal power therefrom. An RF power detector (208) is coupled to the at least one PA (205) for detecting the signal power of the transmitted signal and an analog to digital (A/D) converter (210) is coupled to the RF power detector (208). A hysteresis unit (214) is coupled to the A/D converter (210) for generating a pulse (222) in response to a power threshold being crossed and a load switch control unit (218, 232) is coupled to the hysteresis unit and the at least one power amplifier for providing gain and phase compensation in response to the pulse.Type: GrantFiled: April 4, 2005Date of Patent: March 18, 2008Assignee: Freescale Semiconductor, Inc.Inventors: Mahibur Rahman, Pravinkumar Premakanthan
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Patent number: 7346318Abstract: In radio communication system that is able to transmit in two or more modulation modes, e.g., one modulation mode when phase shifts are performed and another modulation mode when phase shifts and amplitude shifts are performed, the disclosed invention can avoid that receiving band noise becomes so great not to conform to the GSM standards' prescription for such noise in a high voltage region of the power supply voltage, even when the output power is controlled by changing the amplitude of the input signal to the power amplifier circuitry while fixing the bias voltages to be applied to the power amplifying transistors. When the output power is controlled as above, in the modulation mode (GSM mode) when phase shifts are performed, idle currents flowing across the power amplifying transistors are regulated, depending on the power supply voltage, i.e., the idle currents are decreased when the power supply voltage is high and increased when the power supply voltage is low.Type: GrantFiled: May 13, 2004Date of Patent: March 18, 2008Assignees: Renesas Technology Corp., Hitachi Hybrid Network Co., Ltd.Inventors: Takayuki Tsutsui, Hiroyuki Nagamori, Kouichi Matsushita
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Patent number: 7346319Abstract: A system for use in a radio receiver that provides quick access to previously selected audio includes processor logic that evaluates at least a first user-selected audio that has been previously enabled and a second user-selected audio that is currently enabled. An input controller is dynamically coded by the processor logic for recalling audio information associated with the first user-selected audio when the second user-selected audio is being evaluated by the processor logic based upon the length of time the second user selected audio remains in an enabled state. The input controller is an audio recall button located on a user-interface of the receiver and includes an indicia window that displays recall information stored in memory of a processor during the evaluation of the second user-selected audio.Type: GrantFiled: August 24, 2004Date of Patent: March 18, 2008Assignee: Delphi Technologies, Inc.Inventors: Francis E. Szczublewski, Laci J. Jalics, Mona L. Toms
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Patent number: 7346320Abstract: A method, apparatus, and computer instructions for dynamic radio station tuning in a data processing system. A play list is identified. The play list is a user-defined list and includes an identification of a number of songs. Music information is obtained from a plurality of radio stations. This music information is compared to the play list to generate a schedule. Dynamic tuning to a radio station within the plurality of radio stations is performed using the schedule to present songs from the number of songs to a listener.Type: GrantFiled: January 17, 2003Date of Patent: March 18, 2008Assignee: International Business Machines CorporationInventors: Robert Bryant Chumbley, Merle Douglas Sterling
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Patent number: 7346321Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.Type: GrantFiled: February 18, 2004Date of Patent: March 18, 2008Assignee: Autocell Laboratories Inc.Inventor: Floyd Backes
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Patent number: 7346322Abstract: The invention relates to a receiver 1 of signals and proposes to remedy a non-linearity problem in an amplifier 70 of an integrated tuner 7.A linearity compensation circuit 8 is inserted upline from the tuner 7.The compensation circuit 8 presents a characteristic that is the inverse of the characteristic of the low-noise amplifier 708 in order to compensate for the linearity defect.Type: GrantFiled: September 21, 2004Date of Patent: March 18, 2008Assignee: Thomson LicensingInventors: Marc Louchkoff, Claude Rambault
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Patent number: 7346323Abstract: A connection unit comprising a feeder port for connecting the connection unit to an antenna feeder, a first relay port for connecting the connection unit to a receiving and transmitting port of a first base station, and a second relay port for connecting the connection unit to a diversity receiver port of a second base, wherein the connection unit comprises a directional coupler for separating signals where a signal in the feeder port is divided into a first output signal in the first relay port of the first base station and a second output signal in the diversity receiver port of a second base station. A signal in the first relay port is, however, passed undivided to the feeder port. Diversity may be selectively provided in the receiving direction, but substantially no additional loss is introduced to the main transmission direction.Type: GrantFiled: April 25, 2005Date of Patent: March 18, 2008Assignee: Nokia CorporationInventor: Timo Ahonpää
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Patent number: 7346324Abstract: A grounded-emitter circuit is composed of a transistor, a first impedance circuit, and a second impedance circuit. The transistor is an NPN transistor, and the base of the transistor is an input terminal of the grounded-emitter circuit. The emitter of the transistor is grounded to GND via the second impedance circuit. The collector of the transistor is connected to a reference voltage source via the first impedance circuit, and is an output terminal of the grounded-emitter circuit. Further, the second impedance circuit is composed of a parallel resonance circuit consisting of an inductor and a capacitor. With this, it is possible to provide a grounded-emitter circuit capable of being built in an IC, and capable of removing an image frequency signal in a simple circuit configuration.Type: GrantFiled: August 19, 2004Date of Patent: March 18, 2008Assignee: Sharp Kabushiki KaishaInventor: Shoji Sakurai
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Patent number: 7346325Abstract: This invention provides a receiver in which the calibration time by repeated operations to correct phase mismatch and amplitude mismatch between I and Q signals can be reduced. The receiver comprises mixers which convert received RF signals into quadrature modulated IF signals, signal paths which filter and amplify and output the quadrature modulated signals output from the mixers, a calibration circuit which calibrates phase and amplitude mismatches between the I and Q components of the quadrature modulated signals output through the signal paths, a frequency converter which, when the mixers or the signal paths selected output calibration signals with IF frequency instead of the quadrature modulated signals, converts the calibration signals into those with a frequency higher than IF frequency, and an arithmetic operation circuit which calculates phase and amplitude mismatches from the calibration signals output by the frequency converter and outputs calculation results.Type: GrantFiled: July 13, 2005Date of Patent: March 18, 2008Assignee: Renesas Technology Corp.Inventors: Koji Maeda, Satoshi Tanaka, Irei Kyu, Yukinori Akamine, Manabu Kawabe
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Patent number: 7346326Abstract: Disclosed is a mobile communication terminal which is provided with an equalizer function of audio equipment to adjust a timbre of transmitting/received speech sounds so as to satisfy a great number of users having various individualities and tastes simultaneously. The mobile communication terminal according to the present invention includes an equalizer connected to a CODEC, a speaker and a microphone for adjusting a timbre of an analog speech signal inputted thereto from the CODEC and/or a speech signal inputted thereto through the microphone, and an equalizer control circuit for controlling a timbre control operation of the equalizer according to a control signal of a CPU.Type: GrantFiled: December 3, 2001Date of Patent: March 18, 2008Assignee: LG Electronics Inc.Inventor: Hyun Kyun Kim
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Patent number: 7346327Abstract: A wireless receiving circuit includes a mixer, a buffer, an active low-pass filter, and a second order passive low-pass filter which are connected between a signal input terminal and a signal output terminal. The second order passive low-pass filter is for removing an interfering wave that cannot be removed by the active low-pass filter. In the wireless receiving circuit, a first capacitor and a second capacitor are provided. The first capacitor has one terminal connected to an input terminal of the buffer and the other terminal grounded. The second capacitor has one terminal connected to an output terminal of the buffer and the other terminal grounded. These two kinds of capacitors function as the second order passive low-pass filter by being combined with input and output impedance of elements provided on the upstream side and downstream side of the capacitors.Type: GrantFiled: February 22, 2005Date of Patent: March 18, 2008Assignee: Sharp Kabushiki KaishaInventors: Shuichi Kawama, Kunihiko Iizuka
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Patent number: 7346329Abstract: There is provided a communication system, communication apparatus, and control method. A first communication terminal includes message transmission means for transmitting a first or second message to a second communication terminal in response to an on/off operation for a power supply. The second communication terminal includes: first power supply control means for turning off a main power supply at reception of the first message; second power supply control means for turning on the main power supply at reception of the second message; mode setting means for setting communication means to a receive-only mode at reception of the first message, or setting the communication means to a mode capable of transmitting and receiving at reception of the second message; and sub-power supply providing means for providing a sub power supply for driving the second power supply control means during power-off of the main power supply of the second communication terminal.Type: GrantFiled: February 24, 2005Date of Patent: March 18, 2008Assignee: Sony CorporationInventor: Nobuo Motohashi
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Patent number: 7346330Abstract: To simplify the configuration of functional modules in a software-defined radio apparatus, and facilitate the development of software. The functional modules have input and output terminals of a common configuration. Distributed timing control is performed so that the functional modules operate in their respective timings, and the functional modules have common input/output signals.Type: GrantFiled: September 6, 2005Date of Patent: March 18, 2008Assignee: Hitachi, Ltd.Inventors: Manabu Kawabe, Katsuhiko Tsunehara, Hirotake Ishii, Takashi Ishikawa
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Patent number: 7346331Abstract: In an access control system, a method and system for power management. A method of power management in a wireless access control system includes monitoring usage of a transceiver in a remote access point in a wireless access control system, de-activating the transceiver when the transceiver is not in use, and re-activating the transceiver upon occurrence of a predefined event. Additionally, the method may include transmitting a warning signal when an energy level of a power supply associated with the transceiver is below a predetermined threshold. The method may further include locking the remote access point when an energy level of a power supply associated with the transceiver is below a predetermined threshold. The remote access point may be locked until the energy level is above the predetermined threshold.Type: GrantFiled: September 30, 2002Date of Patent: March 18, 2008Assignee: Harrow Products, LLCInventors: Ronald Taylor, James F. Wiemeyer
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Patent number: 7346332Abstract: A method and system for communicating audio signals between an input device and an output device via a network. The output device can include loudspeakers and headphones. In some embodiments an output device, for example a center channel speaker, transmits audio signals to other output devices. In some embodiments, the output device is coupled to, or combined with, a speaker stand or speaker bracket. The network can be wireless, wired, infrared, RF, and powerline.Type: GrantFiled: July 3, 2003Date of Patent: March 18, 2008Assignee: KSC Industries IncorporatedInventors: William A. McCarty, Yadir Rodriquez
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Patent number: 7346333Abstract: A handheld computing device includes a housing, a processor supported by the housing, a wireless telephony device coupled to the processor, a display having a graphical user interface coupled to the processor, and a plurality of input keys. The device is programmed to effectuate a predetermined communications connection when a user depresses two or more input keys simultaneously.Type: GrantFiled: April 27, 2001Date of Patent: March 18, 2008Assignee: Palm, Inc.Inventors: Ryan Robertson, Stephane Maes, Mark Kruger, Eric Williams
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Patent number: 7346334Abstract: When a bomb that might be triggered by a ringing mobile terminal is suspected of being located within a target zone, the base stations whose coverage areas include a critical area that surrounds and encompasses that target zone are switched into a one-way calling mode that prevents the mobile terminals within that critical area from receiving incoming calls, but still allows users of those mobile terminals to place to place outgoing calls. The one-way calling mode is effected in response to a signal received by a base station from its associated MSC that instructs it to disable its paging function, thereby preventing the mobile terminal from receiving and responding to a signal that indicates that an incoming call is present, and thus prevents the base station from sending a signal to the mobile terminal that activates its ringing circuitry.Type: GrantFiled: June 30, 2005Date of Patent: March 18, 2008Assignee: Lucent Technologies Inc.Inventors: Anthony J. Gaeta, Charles John Meyer
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Patent number: 7346335Abstract: A method for providing communications services in a network can include adjusting a mode of communication for devices operating in the network based on emergency state information. Related user terminals, computer program products, and components are also disclosed.Type: GrantFiled: October 20, 2006Date of Patent: March 18, 2008Assignee: AT&T Delaware Intellectual Property, Inc.Inventor: Jeffrey A. Aaron
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Patent number: 7346336Abstract: A rescue device has a motion detector and a transceiver that either transmits a locating signal, which can be tracked by others, when worn by user and operated in a transmit mode or receives and tracks a locating signal transmitted by another transmitter when the device is operated by the user in a receive mode. A control logic circuit suppresses transmission of the locating signal unless a motion signal, generated by the motion detector responsive to the user's movement, indicates that the user has not moved for a predetermined time interval. Thus, the rescue device can transmit the locating signal when the user is motionless, providing notice that the user is immobile and aiding others in locating the user. When receiving, the device guides the user in locating the source of a transmitted locating signal to aid the user in locating an immobilized person or a building exit.Type: GrantFiled: July 19, 2005Date of Patent: March 18, 2008Inventors: Gerald Kampel, Juergen W. Wegner, Marcus L. Peterson
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Patent number: 7346337Abstract: Mobile terminal receives from a server a content, a sending time information which indicates the time of sending the content, and a time restriction information that indicates the time period when the content can be used. Mobile terminal correlates the content with the sending time information and the time restriction information, and stores them. Mobile terminal calculates the difference between the time of receiving the content and the sending time information. Mobile terminal correlates the difference with the content and stores them. Mobile terminal adds the difference to the current time kept by time keeping unit to obtain a usage determination reference time. Mobile terminal compares the usage determination reference time with the time restriction information to determine whether the mobile terminal can use the content or not.Type: GrantFiled: June 2, 2003Date of Patent: March 18, 2008Assignee: NTT DoCoMo, Inc.Inventors: Makoto Hamatsu, Kazuya Anzawa, Riko Nagai
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Patent number: 7346338Abstract: Methods, apparatuses and systems facilitating automated detection of rogue wireless access points in a wireless network environment. The present invention, in one embodiment, integrates automated detection of rogue access points into wireless network systems. As discussed more fully below, the present invention can be applied to a variety of wireless network system architectures.Type: GrantFiled: April 4, 2003Date of Patent: March 18, 2008Assignee: Airespace, Inc.Inventors: Patrice R. Calhoun, Robert B. O'Hara, Jr., David Anthony Freecone
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Patent number: 7346339Abstract: The present invention relates to transmitting and receiving a notification of control information for a point-to-multipoint service. Preferably, a mobile terminal receives notification information from a network during a first period. The mobile terminal then determines to receive a control channel during a second period for receiving a control information message according to the notification information. After, the mobile terminal receives the control information message for the point-to-multipoint service during the second period if the mobile terminal determines to receive the control information message during the second period.Type: GrantFiled: May 4, 2005Date of Patent: March 18, 2008Assignee: LG Electronics Inc.Inventors: Young Dae Lee, Sung Duck Chun, Seung June Yi
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Patent number: 7346340Abstract: There is disclosed a method for providing a user policy to a terminal connected in a network, the method comprising: configuring a user policy for the terminal; and authenticating the terminal, wherein the method further includes providing the configured user policy to the terminal responsive to successful authentication.Type: GrantFiled: June 30, 2005Date of Patent: March 18, 2008Assignee: Spyder Navigations L.L.C.Inventors: Rene Purnadi, Srinivas Sreemanthula, Haihong Zheng, Khiem Le
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Patent number: 7346341Abstract: Mobile-specific services are provided to a mobile device coupled to a local area network. The local area network provides ad-hoc connectivity between consumer electronics devices. A service provider device is coupled to the local area network. A mobile-specific service is provided at least in part by the service provider device. The mobile-specific service is advertised via the local area network. The mobile device subscribes to the mobile-specific service via the local area network in response to advertising of the mobile-specific service. The mobile device utilizes the mobile-specific service via the local area network.Type: GrantFiled: December 10, 2004Date of Patent: March 18, 2008Assignee: Nokia CorporationInventors: Jose Costa-Requena, Inmaculada Espigares