Patents Issued in June 1, 2010
  • Patent number: 7729580
    Abstract: A waveguide type optical device includes a substrate where a waveguide is formed; a supplemental plate connected on the substrate by using an adhesive; and a groove forming part formed by cutting through the supplemental plate so as to reach the substrate and cut the waveguide, the groove forming part being where a functional thin film is inserted. The supplemental plate and the waveguide adhere to each other or come close to each other in a range not influencing a mode of light.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: June 1, 2010
    Assignee: Fujitsu Limited
    Inventors: Kazuhiro Tanaka, Masaharu Doi
  • Patent number: 7729581
    Abstract: An optically-enabled integrated circuit (IC) package for connecting an electrical circuit board to an optical fiber is presented. The IC package comprises an OSA having a laser which is pre-aligned with the optical fiber. The OSA further comprises a standard electrical interface for the connection to the microchip and a standard optical interface for the connection to the optical fiber. A set of mechanical concepts for connecting optical connectors and cables to integrated circuit packages is also presented and can be applied for any type of optical connector such as single optical fiber ferrules, MT-RJ type optical ferrules and 2-D MT-type optical ferrules.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: June 1, 2010
    Assignee: Reflex Photonics Inc.
    Inventors: David Robert Cameron Rolston, Richard Mainardi, Shao-Wei Fu
  • Patent number: 7729582
    Abstract: The present technology relates generally to fibre optic cables their manufacture and uses in the field of optical measurements including biochemical laboratory instrumentation for measuring properties of samples on microtitration plates and corresponding sample supports. The technology has also applications in various laser technologies. A fibre optic cable has an active surface with a determined form provided at a first optical interface at the first end of the cable. The first end of the cable is fused into an exemplary circular form, the fused cable end including fibre ends both within the active surface and outside the active surface. At the opposite, second end of the cable, those fibres which have their first ends at the determined active surface area, are used for forming a second optical interface. It is possible to have high transmission efficiency in optical interfaces where other than circular cross section of the light beam exists.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: June 1, 2010
    Assignee: Wallac Oy
    Inventors: Ville Laitala, Pauli Salmelainen
  • Patent number: 7729583
    Abstract: Flexible closures and other flexible optical assemblies that are installed within a factory, or in the field, and then deployed using cable installation methods, wherein the flexible closures and assemblies have the ability to bend and twist without incurring physical damage to their structure, optical fibers and splices disposed within, and without significant attenuation in the optical fibers when exposed to conventional installation stresses. Flexible closures that replace conventional substantially rigid closures in order to facilitate pre-engineered and assembled distribution cable installation within an optical network, and the physical, bending and material properties of such closures, and methods of manufacturing and installing the same.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: June 1, 2010
    Assignee: Corning Cable Systems LLC
    Inventors: Robert B. Elkins, II, Lars K. Nielsen, James P. Luther, Thomas Theuerkorn
  • Patent number: 7729584
    Abstract: A method of facilitating mid-span access of an optical fiber ribbon cable, and the resulting cable, that provides for redeveloping and/or modifying excess ribbon length with the accessed cable structure. The method includes the use of a form placed within the cable structure that controls the excess ribbon length. The method may further include the reconstitution of severed strength members.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: June 1, 2010
    Assignee: Corning Cable Systems LLC
    Inventors: Joseph Todd Cody, Radawan Hall, Christopher Paul Lewallen, James Phillip Luther, Bao Duy Nguyen
  • Patent number: 7729585
    Abstract: A light source apparatus with modulation function has a wavelength conversion module (75) composed of a nonlinear optical material with a structure having a nonlinear constant modulated periodically. It outputs a difference frequency or sum frequency produced by multiplexing pumping light from semiconductor laser light sources (71) and (72) with different wavelengths through a WDM coupler (74) and by launching the multiplexed light into the optical waveguide. The semiconductor laser light source (72) includes a diffraction grating. The semiconductor laser light source (71) includes a section for modulating output light emitted from its semiconductor laser, and is connected to an external FBG (73) which has a reflection band narrower than a resonance wavelength spacing determined by the device length of the semiconductor laser. The FBG (73) is supplied with the modulated output.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: June 1, 2010
    Assignees: NipponTelegraph and Telephone Corporation, NTT Electronics Corporation
    Inventors: Katsuaki Magari, Tsutomu Yanagawa, Yoshiki Nishida, Hiroyasu Mawatari, Osamu Tadanaga, Masaki Asobe, Hiroyuki Suzuki, Hiroshi Miyazawa, Junji Yumoto
  • Patent number: 7729586
    Abstract: A telecommunications patching system includes: a carrier having a horizontally disposed member with longitudinal slots; and at least one patching module. The module includes: a generally vertically disposed main panel; a plurality of connectors mounted on the main panel, the connectors configured to receive and interconnect patch cords; and a guide member connected with the main panel and received in one of the longitudinal slots of the carrier. The module is slidable relative to the carrier along a path defined by the slot between an access position, in which a front portion of the main panel slides forward so that the plurality of connectors are accessible to a technician, and a non-access position, in which the plurality of connectors are not accessible to a technician.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: June 1, 2010
    Assignee: Commscope Inc. of North Carolina
    Inventor: Scott Martin Keith
  • Patent number: 7729587
    Abstract: Disclosed is a method of producing a planar multimode optical waveguide by direct photo-patterning and, more particularly, to an optical waveguide material and a method of producing the same. It is possible to control the refractive index of the optical waveguide, and the optical waveguide has a desirable refractive index distribution throughout different dielectric regions. In the method, it is unnecessary to conduct processes of forming a clad layer and of etching a core layer, thus a production process is simplified. The method comprises coating a photosensitive hybrid material having a refractive index or a volume changed by light radiation, in a thickness of 10 microns or more, and radiating light having a predetermined wavelength onto the coated photosensitive hybrid material to form the multimode optical waveguide due to a change in refractive index of a portion onto which light is radiated.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: June 1, 2010
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Byeong-Soo Bae, Dong-Jun Kang, Jin-Ki Kim, Woo-Soo Kim
  • Patent number: 7729588
    Abstract: An optical fiber includes: a first core portion doped with rare earth ions; a second core portion having a lower refractive index than that of the first core portion, provided along an outer circumference of the first core portion, and doped with the rare earth ions; and a clad portion having a lower refractive index than that of the second core portion and provided along an outer circumference of the second core portion, and is configured such that a concentration of the rare earth ions added to the second core portion is higher than that to the first core portion. With this configuration, it is possible to suppress an amount of FWM crosstalk in an optical amplification by decreasing the length of a fiber while alleviating efficiency deterioration due to concentration quenching.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: June 1, 2010
    Assignee: Fujitsu Limited
    Inventors: Masato Nishihara, Etsuko Hayashi, Shinya Inagaki
  • Patent number: 7729589
    Abstract: A mold frame contains a lamp shade and a light source, a light guide being erected at the open end and secured in place on one side of the lamp shade; streams of light from the light source entering into from one side of the light guide plate to project in the direction as expected; and a mask device being disposed on the mold frame at where close to the joint edge of the light guide plate so to weaken the reflection rate of the light that leaves the light guide plate, to reduce the interference of the light in the light guide plate, and to diminish the phenomenon of ripples.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 1, 2010
    Assignee: K-Bridge Electronics Co., Ltd.
    Inventors: Fang-I Chou, Chia-Chun Hsu
  • Patent number: 7729590
    Abstract: An example trick mode play process for digital video stores a plurality of most recent reference frames in a corresponding plurality of frame buffers; displaying a current frame during a current frame time interval; determining a next frame for display; inspecting the plurality of frame buffers to determine if the next frame is present in a frame buffers. If the next frame is present, designating the frame for display in the next frame time interval. If the next frame is not present: checking if the frame buffers contain any reference frames needed to decode the next frame; and decoding a next frame using all reference frames needed to decode the next frame which can be found in the frame. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: June 1, 2010
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventor: Takuya Kosugi
  • Patent number: 7729591
    Abstract: A data processing apparatus outputting picture data to a reproduction apparatus reproducing a plurality of picture data in an order in accordance with a designated reproduction direction, the unit having a processing circuit outputting to the reproduction apparatus the picture data in an order in accordance with a reproduction direction designated in the reproduction apparatus and writing it into an input memory in the reproduction apparatus and, when reversing the reproduction direction designated at the reproduction apparatus, outputting the picture data to the reproduction apparatus conditional on the picture data to be used next in reproduction by the reproduction direction after reversal not being stored in the input memory.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: June 1, 2010
    Assignee: Sony Corporation
    Inventors: Kyohei Koyabu, Shojiro Shibata, Shuji Tsunashima, Mototsugu Takamura, Shinjiro Kakita
  • Patent number: 7729592
    Abstract: A method for managing the recording capacity of a recording device, independently of user involvement, comprising receiving (104, 154) data representing a plurality of recording modes of the recording device; identifying (114) one or more recording modes which may be used to record an item using the prevailing unreserved recording capacity; and arranging (128, 162) for the recording of the item using a recording mode selected (122, 160) based on a preference, the arrangement including, where necessary, adapting (120, 170) one or more pending or previously recorded items.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: June 1, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Jamie M. Higgins
  • Patent number: 7729593
    Abstract: An image and sound output system includes an image and sound data output device, and an image display device that is connected to the image and sound data output device through a transmission path. Further, the image and sound data output device includes an image and sound data separating unit, an image data transmitting unit that transmits the separated image data to the image display device, a sound data output unit that outputs the separated sound data, an image data analyzing unit that analyzes image data transmitted to the image display device by the image data transmitting unit, a sound output adjusting time creating unit, and a sound output synchronization adjusting unit. Furthermore, the image display device includes an image data receiving unit that receives image data transmitted by the image and sound data output device, an image processing unit.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: June 1, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Norihiko Yamada
  • Patent number: 7729594
    Abstract: A buffer initially preloads a text subtitle stream recorded on a recording medium. The preloaded text subtitle stream includes a dialog style segment defining a group of region styles and a plurality of dialog presentation segments, each of which contains at least one region of dialog text. Each region of dialog text is linked to a selected one of the group of region styles defined in the dialog style segment. The dialog style segment and the plurality of dialog presentation segments are encapsulated in a plurality of PES packets, respectively. A text subtitle decoder decodes and presents each dialog presentation segment according to a continuous presentation flag included in each dialog presentation segment. The continuous presentation flag indicates whether continuous presentation is required for each dialog presentation segment with previous one.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: June 1, 2010
    Assignee: LG Electronics, Inc.
    Inventors: Kang Soo Seo, Sung Wan Park, Byung Jin Kim, Jea Yong Yoo, Seung Hoon Lee
  • Patent number: 7729595
    Abstract: In the data structure for managing reproduction of text subtitle data, a text subtitle information area stores at least one text subtitle information segment. The text subtitle information segment is represented by a single PES packet of transport packets. In one embodiment, the text subtitle information segment includes an identifier identifying the text subtitle information segment as a text subtitle information segment and includes style information for text subtitle data.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: June 1, 2010
    Assignee: LG Electronics Inc.
    Inventors: Hyung Sun Kim, Kang Soo Seo, Byung Jin Kim
  • Patent number: 7729596
    Abstract: By packet speed setting device, setting is made so as to send out a cycle start packet at predetermined-times speed when image data is transferred from a DV apparatus to a DVD recorder, and by predetermined-times speed dubbing function determination device, it is determined whether or not the DV apparatus has a predetermined-times speed dubbing function when image data recorded on the DV apparatus is dubbed on the DVD recorder at predetermined-times speed. By notification device, the DV apparatus is notified to perform predetermined-times speed dubbing from the DVD recorder in the case of having the predetermined-times speed dubbing function, and by predetermined-times speed dubbing start device, predetermined-times speed dubbing is started by controlling components of the DV apparatus and the DVD recorder related to the predetermined-times speed dubbing by the notification.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: June 1, 2010
    Assignee: Funai Electric Co., Ltd.
    Inventor: Junya Senoo
  • Patent number: 7729597
    Abstract: This application discloses a system for recording medical image data for production on a portable digital recording medium such as CDs and DVDs. This system includes a receiving module, a processing module and an output module, with viewing program for viewing medical image data stored on the portable digital recording medium. It also discloses a method of storing medical image data on a portable digital recording medium, including the steps of receiving the medical image data, processing the data and storing the data on the portable digital recording medium, with a viewing program for viewing medical image data stored on the portable digital recording medium.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: June 1, 2010
    Assignee: Datcard Systems, Inc.
    Inventors: Ken Wright, Chet LaGuardia
  • Patent number: 7729598
    Abstract: On a BD-ROM, there is recorded is a digital stream into which video and audio streams are multiplexed. The video stream is composed of a plurality of pictures that together represent video. The graphics stream includes a PES packet storing state control information (ICS) and PES packets containing graphics data (ODSs). The graphics data constructs an interactive display. The state control information defines the control so as to change the states of buttons presented on the interactive display according to the reproduction proceeding and user operations. The ICS is attached with a PTS showing the display timing of a picture to be synchronized with the interactive display. The ODS is attached with a PTS showing the timing for decoding the graphics data. The timing shown in the ODS is prior to the display timing.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: June 1, 2010
    Assignee: Panasonic Corporation
    Inventors: Wataru Ikeda, Tomoyuki Okada, Yasushi Uesaka, Masayuki Kozuka
  • Patent number: 7729599
    Abstract: A device and a method are provided for determining the after-run voltage of a direct current motor which is operated via cycled control. In normal operation the direct current motor is controlled via PWM control and a first specifiable pulse/no-pulse ratio. An evaluation unit is provided for determining an after-run voltage variable which is representative of the after-run voltage of the motor. Furthermore, for determining the after-run voltage variable the direct current motor is controlled via a specifiable, variable second pulse/no-pulse ratio.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: June 1, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Emde, Wolfgang Peveling, Gotthilf Koerner, Andreas Schmidtlein, Volker Weeber, Achim Noller, Heiko Bock, Dirk Niemeyer
  • Patent number: 7729600
    Abstract: A tilt-sensitive viewfinder indicates the area of an object plane within view of the camera using a visible signal projected from the camera. A direction sensor determines the camera orientation and modifies the visible signal as the camera orientation changes. Changes in appearance of the visible signal reflect changes in the camera field of view. Data from the direction sensor describing camera orientation may be stored in a data storage device and may be associated with data describing the captured image. The stored camera orientation data improves processing of captured images by providing information about angular components of the captured images.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: June 1, 2010
    Assignee: Ricoh Co. Ltd.
    Inventors: Kurt W. Piersol, Peter E. Hart, Sergey Chemishkian
  • Patent number: 7729601
    Abstract: An autofocus method can include moving a lens and reading out first image data associated with a plurality of image pixels during a first low light interval, modifying camera parameters to provide autofocus image light received during an autofocus light interval, acquiring second image data associated with the plurality of image pixels during the autofocus light interval, modifying camera parameters to substantially reduce image light received during a second low light interval, reading out the second image data during the second low light interval, and analyzing at least the first image data and the second image data to determine a focus position of the lens.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: June 1, 2010
    Assignee: Siimpel Corporation
    Inventor: Richard Tsai
  • Patent number: 7729602
    Abstract: An electronic camera includes first and second imaging stages for capturing separate images of a scene, one of the stages being designated as a default imaging stage. A processor enables capture and display of the separate images, and further responds to an operator selection of one of the imaging stages as a primary capture unit which is to be primarily used for capturing an image of the scene that is stored by the digital camera. If the operator selection does not occur within a predetermined time period, or if the camera is actuated before the time has run out, the processor automatically selects the default imaging stage as the primary capture unit.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: June 1, 2010
    Assignee: Eastman Kodak Company
    Inventors: Wilbert F. Janson, Jr., Kenneth A. Parulski
  • Patent number: 7729603
    Abstract: A method and system for enhancing the resolution of a camera are disclosed. For example, a single lens can be placed at a predetermined position and the position of a lens assembly can be adjusted so as to enhance the resolution of the camera. The single lens can then be moved so as to effect focusing of the camera while the position of the lens assembly tends to maintain enhanced resolution thereof.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: June 1, 2010
    Assignee: Siimpel Corporation
    Inventors: Jing Xu, Roman C. Gutierrez, Tony K. Tang
  • Patent number: 7729604
    Abstract: An exemplary automatic focusing system adopted in a camera includes a brightness detecting unit, a recording unit, a correcting unit, and a selecting unit. The brightness detecting unit is configured for detecting a general brightness value of an environment of a subject prior to a focusing operation of the camera and outputting a correction factor associated with the general brightness value. The recording unit is configured for storing a first set of brightness values and the first set of contrast values. The correcting unit stores a preset brightness value and a preset contrast value. The correcting unit is configured for calculating a number of second contrast values according to the correction factor, the first set of brightness values, a preset brightness value, and a preset contrast value. The selecting unit is configured for choosing a maximum contrast value from the number of second contrast values of the subject.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: June 1, 2010
    Assignees: Premier Image Technology(China) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Zhi-Hui Wen
  • Patent number: 7729605
    Abstract: An auto-focusing camera includes a stator (20), a rotor (30) rotatably disposed in the stator, and a lens unit (40) received in the rotor. The stator includes a stator core (23) and coils (25) winding on the stator core. The rotor is a permanent magnet (32) securely mounted around the lens unit. The lens unit forms three ears (414) at a bottom thereof, and a wave-shaped surface (220) is formed on a top of an inner, bottom flange (22) of the stator. The ears abut the wave-shaped surface. The ears of the lens unit move along the wave-shaped surface during rotation of the rotor and the lens mount, and thus the lens unit moves telescopically along an axial direction thereof.
    Type: Grant
    Filed: December 29, 2007
    Date of Patent: June 1, 2010
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Cheng-Fa Weng, Huai-Chao You, Jen-Te Wang, Ching-Hsing Huang
  • Patent number: 7729606
    Abstract: A digital camera module (100) includes a lens module (20) and a chip package (50) mounted in a light path of the lens module. The lens module includes a first lens assembly (21) and a second lens assembly (23). The first lens assembly includes a first fixture (211) having a through hole (212) defined therein and at least one lens (218) received in the through hole. The second assembly includes a second fixture (23) having a through hole (232) defined therein and at least one lens (238) attached therein. One of the first fixture and the second fixture has a slotted annular ring (213) protruding therefrom with an annular slot (214) defined therein. The other has a male annular ring (235) extending therefrom, and the slotted annular ring and the male annular ring matingly engage with each other to fix the first lens assembly and second assembly together.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: June 1, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Steven Webster, Ying-Cheng Wu, Chun-Hung Lin
  • Patent number: 7729607
    Abstract: Various image-capturing systems are disclosed that use polarized filters to reduce or control glare effects on captured images. In one embodiment, the system includes a light source, a first polarized filter adapted to polarize light emanating from the light source; a second polarized filter adapted to perform polarized filtering on received light; and an image-capturing device adapted to receive the filtered light. In another embodiment, the system further includes an actuator to selectively move any of the polarized filter into and out of the light path. In yet another embodiment, a method of forming a resultant image comprises recording a first image with a filter set to a first polarization angle, recording a second image with the filter set to a second polarization angle, and blending the first and second images. The recording of the first and second images may be performed simultaneously or at different times.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: June 1, 2010
    Assignee: Technologies4All, Inc.
    Inventor: John H. Karim
  • Patent number: 7729608
    Abstract: An image processing method comprising a first step of displaying a moving image being captured on a display and a second step of displaying a still image captured in response to a still image capture instruction on the display simultaneously with the moving image being captured when receiving the still image capture instruction during display of the moving image on the display in the first step and an image processing apparatus using the same.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: June 1, 2010
    Assignee: Sony Corporation
    Inventor: Takahiro Okubo
  • Patent number: 7729609
    Abstract: An image sensing apparatus is provided with an aperture unit (104), an image sensor (106) that converts light beams entering through a photographing lens (103) and the aperture unit into electrical signals, and a display unit (107), including an electronic viewfinder mode to continuously display on the display unit images based on the electrical signals obtained by the image sensor. The image sensing apparatus has a control unit (135) that causes the aperture unit to stop down, when there is an instruction to display on the display unit an image other than the image based on the electrical signals obtained by the image sensor while in the electronic viewfinder mode.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: June 1, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Kikuchi
  • Patent number: 7729610
    Abstract: There is provided an imaging apparatus having (a) an eyepiece type viewfinder formed on a predetermined plane of the imaging apparatus; (b) an operation member for diopter adjustment of said viewfinder; and (c) a light shielding member for suppressing entrance of external light into said viewfinder, the light shielding member protruding from the predetermined plane around the viewfinder by a constant height. In the apparatus, the operation member is disposed not to protrude from an outer border of the predetermined plane, and a recess is formed in the light shielding member above the operation member so that the operation member is substantially accommodated in the recess inner than an opening edge of the recess.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: June 1, 2010
    Assignee: Sony Corporation
    Inventor: Kei Tomatsu
  • Patent number: 7729611
    Abstract: In order to detect a position of an optical recording medium on which printing is performed, it is provided an optical sensor provided with include a photo emitter operable to emit light and a photo receiver operable to receive light and output a first signal in accordance with an amount of the received light. The optical sensor is transported to a position above a marker provided on the tray. Light is emitted from the photo emitter to irradiate the marker. Light reflected from the marker is received by the photo receiver. A reference value is determined based on a first value of the first signal outputted when the marker is irradiated. A predetermined calculation is executed with respect to the reference value to determine a threshold value. The optical sensor is transported above the tray, while emitting light from the photo emitter and comparing the first signal outputted from the photo receiver with the threshold value.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: June 1, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Koji Niioka, Eiichi Miyashita
  • Patent number: 7729612
    Abstract: The present disclosure relates to a passive optical network (PON) and discloses a method and system for maintaining the PON where the optical line terminal (OLT) is provided with an optical power detection module for measuring the total power of optical signals received by the PON, and the optical network units (ONUs) are provided with an optical transmitter power supply module.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: June 1, 2010
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Tao Jiang, Yuntao Wang, Jun Zhao
  • Patent number: 7729613
    Abstract: The invention provides an optical shutter (400) for a communication system of a type comprising first (B1, B2) and second (A1, A2) communication paths along which information-bearing radiation propagates in opposite directions. The shutter (400) comprises: an optical tap (440) and a power monitor (430) for monitoring power of information-bearing radiation propagating along the first path (B1, B2) and for generating a corresponding radiation power indicative signal; a control unit (420) for comparing the indicative signal with a threshold value to generate a control signal (control); and shutter switch (410) for selectively substantially transmitting or blocking radiation propagating along the second path (A1, A2) in response to the control signal.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: June 1, 2010
    Assignee: Ericsson AB
    Inventor: Andrew G. Lauder
  • Patent number: 7729614
    Abstract: A data distribution system transmitting and receiving a large capacity of data such as image data smoothly without incurring a delay over an optical fiber line located between a data sever and a client device. In the data transmission system, a plurality of client devices are bus-connected through an optical fiber to a data server transmitting and receiving data as signal light. Each of the client devices has a client optical switch and is connected with a client access device. The client optical switch is structured with a thermal-lens forming element and a signal-light path shifting member. When any of the client devices forwards an access command to its own client access device, control light is irradiated from the client access device to the own client optical switch thus effecting a switchover. Thus, transmission data of from the data server is stored in a data storage of the relevant client device.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: June 1, 2010
    Assignees: National Institute of Advanced Industrial Science and Technology, Dainichiseika Color & Chemicals Mfg., Co., Ltd.
    Inventors: Takashi Hiraga, Nobutaka Tanigaki, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Norio Tanaka
  • Patent number: 7729615
    Abstract: A method for transmitting signaling and control information for wavelength-division multiplex networks for optical, fiber-bound information transfer in digitized form, the signaling and control information being transmitted via the same optical channel, particularly with the same wavelength, as the useful information, but being encoded and decoded independently thereof, with the result that the control and signaling information can also be accessed independently of the useful information. The use of a time-division multiplex method allowing the different encoding of useful information and control information makes it possible considerably to reduce the technical complexity of passive optical network elements with regard to the routing of the signaling and control information. This method permits the simple, low-cost and transparent transmission of signaling and control information in the optical WDM network.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: June 1, 2010
    Assignee: Deutsche Telekom AG
    Inventors: Klaus-Peter Zeffler, Heiko Dassow
  • Patent number: 7729616
    Abstract: Apparatus and system for transmitting and receiving optical code division multiple access data over an optical network. The apparatus comprises a spectral phase decoder for decoding the encoded optical signal to produce a decoded signal, a time gate for temporally extracting a user signal from the decoded signal, and a demodulator that is operable to extract user data from the user signal. The system preferably comprises a source for generating a sequence of optical pulses, each optical pulse comprising a plurality of spectral lines uniformly spaced in frequency so as to define a frequency bin, a data modulator associated with a subscriber and operable to modulate the sequence of pulses using subscriber data to produce a modulated data signals and a Hadamard encoder associated with the data modulator and operable to spectrally encode the modulated data signal to produce an encoded data signal.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: June 1, 2010
    Assignees: Telcordia Technologies, Inc., University of Central Florida
    Inventors: Shahab Etemad, Paul Toliver, Janet Lehr Jackel, Ronald Charles Menendez, Stefano Galli, Thomas Clyde Banwell, Peter Delfyett
  • Patent number: 7729617
    Abstract: The invention is relevant to optical fiber transmission systems, and in particular, pertains to the transceiver cards in an optical fiber transport system. In particular the invention teaches an improved transceiver card architecture that allows high density, flexibility and interchangeability of functionality.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: June 1, 2010
    Inventors: Samir Satish Sheth, Marvin R. Young, Jeffrey Lloyd Cox, John W. Ayres, III
  • Patent number: 7729618
    Abstract: Digital optical networks for communication between digital consumer electronic devices are disclosed. A digital optical network can include an input interface configured to electrically couple to a DVI or HDMI receptacle of a source device. The input interface includes an optical transmitter for converting a TMDS signal into an optical signal. An input optical fiber optically coupled to the optical transmitter receives the optical signal. A coupler is coupled to the input optical fiber and couples the optical signal with at least one of multiple output optical fibers coupled to the coupler. Output interfaces each include an optical transmitter for converting the optical signal back into the electrical TMDS signal. The output interfaces are configured to electrically couple the TMDS signals with respective DVI or HDMI receptacles of DVI or HDMI sink devices.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 1, 2010
    Assignee: Finisar Corporation
    Inventors: Jimmy A. Tatum, James K. Guenter
  • Patent number: 7729619
    Abstract: In order to enhance dispersion control, the apparatus includes a dispersion controller; a quality index generator generating a quality index representing a quality of an optical signal output from the dispersion controller; and a searching unit searching for an amount of dispersion control applying to the dispersion controller which amount optimizes the quality index, wherein the searching unit includes a splitting-half searching unit roughly searching, in a splitting half method, a range in which dispersion is controllable by the dispersion controller for an amount of dispersion control such that the quality index generated by the quality index generator becomes preferable, and a sweep searching unit thoroughly searching, by sweeping, a limited range based on the amount of dispersion searched by the splitting-half searching unit for an amount of dispersion control that optimizes the quality index generated by the quality index generator.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: June 1, 2010
    Assignee: Fujitsu Limited
    Inventors: Kiyotoshi Noheji, Hiroki Ooi
  • Patent number: 7729620
    Abstract: Methods and systems for controlling optical power attenuation are provided. A method comprises periodically measuring an optical power of an optical signal received by an optical receiver and periodically measuring a first attenuation control signal voltage. When the optical power measurement is outside a target power range, the method continues with calculating a target voltage necessary to maintain the optical power measurements at a target power level; calculating a second attenuation control signal based on the target voltage, wherein the second attenuation control signal is calculated to provide an over-damped transient response that maintains the second attenuation control signal within a usable range of a variable optical power attenuator; applying a second attenuation control signal voltage based on the second attenuation control signal to the variable optical power attenuator; and adjusting attenuation of the optical signal based on the second attenuation control signal voltage.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: June 1, 2010
    Assignee: ADC Telecommunications, Inc.
    Inventors: Paul Schatz, Dean Zavadsky, William J. Mitchell, Steve Stuart, Ana Santos
  • Patent number: 7729621
    Abstract: In one embodiment, the present invention includes a controller coupled to an optical modulator to receive a dither signal, determine a difference between the dither signal and a previous dither signal, determine a derivative of the difference with respect to a bias voltage difference between first and second bias voltages, and control a bias voltage for the optical modulator based on the derivative. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: June 1, 2010
    Assignee: Intel Corporation
    Inventors: Gevorg Nahapetian, Chih-Hao Chen, Thomas Giovannini
  • Patent number: 7729622
    Abstract: To eliminate a possibility to induce a user's confusion on an image forming apparatus displaying a message prompting the user to supply consumables if a remaining amount of the consumables becomes less than a prescribed amount. Communication section receives an order defining information from an external device, storing section stores the order defining information thus received, and control section halts the message prompting the user to supply the consumables in accordance with the order defining information stored in storing section.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: June 1, 2010
    Assignee: Oki Data Corporation
    Inventor: Shuichi Yamanaka
  • Patent number: 7729623
    Abstract: An image forming apparatus including an image forming unit which comprises a cartridge having a toner therein to form an image and a controller to control the image forming unit to increase a density of the image to be formed, if it is determined that a standard of the cartridge does not meet a usage requirement.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-jin Park
  • Patent number: 7729624
    Abstract: In a method and system for determination of a fill state of a transport reservoir for toner material, toner material is transported from a transport reservoir into a developer station with aid of a toner transport system of a printer or copier. At least a toner material quantity supplied to the developer station is detected. The detected toner material quantity is associated with the transport reservoir from which the toner material is extracted.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: June 1, 2010
    Assignee: Oce Printing Systems GmbH
    Inventors: Martin Zehentbauer, Bernd Hausmann
  • Patent number: 7729625
    Abstract: An image forming device has an imaging unit including: a rotating body; an exposure unit forming an electrostatic latent image on the rotating body; a developing unit developing the latent image using developer to form an image; and a transfer unit transferring the image to a recording medium, a memory storing data on correspondence between first image data, second image data and a first correction amount, the first image data representing a first latent image formed by a first turn of the rotating body, the second image data representing a second latent image formed by a second turn of the rotating body, and the first correction amount used for correcting the second image data so that density of the image on the recording medium closer to density of the second latent image; a correction amount determining unit determining the first correction amount corresponding to the first and second image data based on the data stored in the memory; and a correcting unit correcting the second image data based on the firs
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: June 1, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiko Kubo, Tomoshi Hara
  • Patent number: 7729626
    Abstract: In order to conform a specific correction table to the characteristics of a liquid developer to be used, the specific correction table is created by calibrating a standard correction table stored in advance by using a viscosity property value of a liquid developer for calibration at a current temperature. A concentration adjustment is performed by comparing a measured viscosity property value with a target viscosity property value which is temperature-corrected based on the specific correction table. Further, the viscosity property value of a liquid developer is detected by measuring the current of a motor for stirring the liquid developer, where a no-load stirring current value is measured in the absence of a liquid developer, and one or both of a measured current value and target current value is corrected based thereon.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: June 1, 2010
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yuji Kamoda, Keyaki Yogome, Hiroaki Umemoto
  • Patent number: 7729627
    Abstract: A first container is operable to accommodate a liquid toner, and provided with a window. A reflector is disposed in the first container. A light emitter is operable to emit light to the reflector through the window and the liquid toner. A light receiver is operable to receive the light reflected by the reflector through the liquid toner and the window. A detector is operable to detect a concentration of the liquid toner based on the light received by the light receiver.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: June 1, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Nobumasa Abe, Ken Ikuma
  • Patent number: 7729628
    Abstract: An image heating apparatus includes a heating rotatable member for heating, in a nip, an image on a recording material; a heater for heating the image heating member; a cooling device for cooling the image heating member, wherein when a target temperature of the image heating member is changed to a low temperature which is lower than the target temperature, the apparatus is operable in a mode wherein a temperature of the image heating member is lowered by the cooling device to a transition temperature which is lower than the low temperature, and then, the temperature of the image heating member is raised by the heater to the low temperature.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: June 1, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshinori Nakayama
  • Patent number: 7729629
    Abstract: A fixing unit that heat-fixes the toner image onto the sheet, has: an information acquisition section that acquires information concerning a factor causing the input voltage which is supplied to a heater for heating the heating roller to vary; a temperature setting section that sets a target temperature of the heater based on the information acquired by the information acquisition section; and a temperature controller that controls the temperature of the heater such that the heating roller becomes the target temperature set by the temperature setting section.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: June 1, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Masanori Takai, Satoshi Himeno