Patents Assigned to Renesas Mobile Corporation
  • Publication number: 20150319595
    Abstract: A communications method for facilitating peer discovery, and thereby facilitating peer-to-peer communications in a mobile communications network, comprises: acquiring, by a user equipment capable of performing peer-to-peer, P2P, proximity services, a link-local interface identifier from a node of a network. The link-local interface identifier is unique within the network, and the method further comprises establishing a link-local domain with at least one other user equipment in the network at least partly on the basis of the acquired link-local interface identifier.
    Type: Application
    Filed: November 1, 2013
    Publication date: November 5, 2015
    Applicant: RENESAS MOBILE CORPORATION
    Inventors: Sami-Jukka HAKOLA, Samuli TURTINEN, Timo Kalevi KOSKELA
  • Publication number: 20150304896
    Abstract: The application relates to a mobile terminal radio stack for D2D single channel (308) and a cellular uplink single channel (324). A D2D connection is a direct connection formed between a first mobile terminal and a second mobile terminal over the cellular radio spectrum. The D2D connection is a local communication link and is generally enabled for use over short distances. Because the D2D connection could be lost quite rapidly, handover (e.g. bearer establishment) of the D2D communications to traditional cellular communications e.g. Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN)) may not occur in time to synchronize the multiple mobile terminals. As a result, multiple protocol data units between the mobile terminals may be lost.
    Type: Application
    Filed: October 24, 2013
    Publication date: October 22, 2015
    Applicant: RENESAS MOBILE CORPORATION
    Inventors: Samuli Heikki TURTINEN, Jukka Tapio RANTA, Kaisu Maria IISAKKILA, Sami-Jukka Hakola, Timo Kalevi KOSKELA
  • Publication number: 20150296401
    Abstract: In accordance with an example embodiment of the present invention, a method is disclosed that comprises obtaining a new signal quality threshold based on a base signal quality threshold and a context-sensitive buffer margin and setting a current triggering threshold to the obtained new signal quality threshold if the current triggering threshold is smaller than the obtained new signal quality threshold.
    Type: Application
    Filed: October 24, 2013
    Publication date: October 15, 2015
    Applicant: RENESAS MOBILE CORPORATION
    Inventors: Christian Hamilton, Kelvin Ayres
  • Publication number: 20150289312
    Abstract: A method, apparatus and computer program product are provided herein for enabling a D2D bearer to stay alive even in an instance in which a D2D connection is lost. In some example embodiments, a method is provided that comprises detecting a condition that indicates that a device-to-device bearer is to be terminated. The method of this embodiment may also include modifying a cellular bearer protocol data unit header, such that the cellular bearer protocol data unit header indicates that a cellular bearer service data unit is a device-to-device protocol data unit. The method of this embodiment may also include causing one or more device-to-device protocol data units to be encapsulated within one or more cellular bearer protocol data units, such that the one or more device-to-device protocol data units are transmitted via a cellular bearer.
    Type: Application
    Filed: October 25, 2013
    Publication date: October 8, 2015
    Applicant: Renesas Mobile Corporation
    Inventors: Jukka Tapio Ranta, Kaisu Maria Iisakkila, Samuli Turtinen, Sami-Jukka Hakola, Timo Kalevi Koskela
  • Publication number: 20150289215
    Abstract: network signal value is received (610) from one or more access points in response to a request to employ carrier aggregation. An additional maximum power reduction of a plurality of uplink and downlink signals among two or more radio bands is selectively produced (620) based upon the network signal value and a plurality of dynamic additional maximum power reduction parameters.
    Type: Application
    Filed: September 10, 2013
    Publication date: October 8, 2015
    Applicant: RENESAS MOBILE CORPORATION
    Inventors: Jouni Kristian Kaukovuori, Antti Oskari Immonen
  • Publication number: 20150257115
    Abstract: An apparatus and method in which a User Equipment (UE) can register with a wireless network without requiring a packet data connection to be established. Embodiments are described in which a UE can indicate to a Mobility Management Entity that a packet data connection is not required to be established immediately. This can free resources when the UE knows that it will not need to transmit or receive data for some time, which is often the case for UE using Machine to Machine communication. In other embodiments, the MME can delay the establishment of a data connection for a UE if there are temporarily not enough resources to support it. In one embodiment, an apparatus for configuring a user equipment for transmission of data over a wireless network is provided.
    Type: Application
    Filed: October 1, 2013
    Publication date: September 10, 2015
    Applicant: RENESAS MOBILE CORPORATION
    Inventors: Matti Kullervo Jokimies, Hannu Petri Hietalahti, Marko Tapani Niemi
  • Publication number: 20150094112
    Abstract: A user equipment (UE) determines a first transmission power for a control channel using closed loop power control with a wireless network; and determines a second transmission power for the control channel. For transmission time intervals (TTIs) in which the UE is transmitting the control channel and also transmitting data on a data channel, the UE selects the second transmission power for transmitting the control channel. For TTIs in which the UE is transmitting the control channel but not also transmitting data on the data channel, the UE selects the first transmission power for transmitting the control channel. Three distinct embodiments are shown for these two transmission powers, and also quantitative data is shown that in a HSPA system this technique reduces inter-user interference at least at high SINR.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 2, 2015
    Applicant: Renesas Mobile Corporation
    Inventors: Karl Marko Juhani LAMPINEN, Arto Johannes LEHTI, Tao CHEN, Tuomas Tapio HILTUNEN
  • Patent number: 8935553
    Abstract: A semiconductor device 1 includes a clock generation circuit 15 that changes a frequency of an output clock signal according to a control signal div, an arithmetic circuit (e.g., CPU0) that operates according to the clock signal, a storage circuit (e.g., IC0) that is activated according to access from the arithmetic circuit CPU0, a memory access detection unit 12 that detects a number of accesses from the arithmetic circuit CPU0 to the storage circuit IC0, and when the number of accesses increases, outputs a request signal (e.g., psreq1), and a clock control circuit 14 that generates the control signal div for lowering the frequency of the clock signal according to the request signal psreq1.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: January 13, 2015
    Assignee: Renesas Mobile Corporation
    Inventors: Tsugio Matsuyama, Kohei Wakahara, Masaki Fujigaya, Takahiro Irita
  • Patent number: 8902332
    Abstract: An image processing apparatus includes an image processing unit that calculates two types of image data from one image data and outputs the calculated image data, a data combination unit that combines the two type of data supplied from the image processing unit and outputs the combined data to one terminal, an output buffer that adjusts an output timing of the combined data according to an instruction supplied from bus arbitration means for arbitrating a bus, and a data distribution unit that outputs the combined data output from the output buffer to the bus in a form of the combined data, or distributes the combined data and outputs the distributed data to the bus according to an external combination distribution instruction.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 2, 2014
    Assignee: Renesas Mobile Corporation
    Inventors: Hiroyuki Hamasaki, Atsushi Nakamura, Manabu Koike, Hideaki Kido, Nobuyasu Kanekawa
  • Patent number: 8884708
    Abstract: The present invention provides a digitally controlled oscillator device capable of realizing a reduction in DNL. The digitally controlled oscillator device includes, for example, an amplifier circuit block, coil elements and a plurality of unitary capacitor units coupled in parallel between oscillation output nodes. Each of the unitary capacitor units is provided with capacitive elements, and a switch which selects whether the capacitive elements should be allowed to contribute as set parameters for an oscillation frequency. The switch is driven by an on/off control line extending from a decoder circuit. The on/off control line is shielded between the oscillation output nodes by a shield section.
    Type: Grant
    Filed: October 13, 2012
    Date of Patent: November 11, 2014
    Assignee: Renesas Mobile Corporation
    Inventor: Takahiro Nakamura
  • Publication number: 20140310452
    Abstract: Provided is a semiconductor device including: a plurality of processing circuits; an arbitration circuit that arbitrates a plurality of data transfer requests issued by the plurality of processing circuits; a mask control circuit that loads the plurality of data transfer requests arbitrated by the arbitration circuit, and sequentially outputs the plurality of data transfer requests after a lapse of a mask period; and a memory controller that accesses a memory based on the plurality of data transfer requests sequentially output from the mask control circuit, and switches a mode of the memory to a power saving mode when no data transfer request is output from the mask control circuit for a predetermined period.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 16, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: Daisuke Kawakita, Toshikazu Hori
  • Patent number: 8841975
    Abstract: The present invention provides a digitally controlled oscillator device capable of reducing noise away from an oscillation frequency, and a high frequency signal processing device. Fractional capacitances are realized using a plurality of unitary capacitor units, for example. In one unitary capacitor unit, one ends of two types of capacitive elements are respectively coupled to oscillation output nodes. On the other hand, in the unitary capacitor units other than the one unitary capacitor unit, one ends of two types of capacitive elements are respectively coupled to a fixed voltage. The other ends of one capacitive elements in all the unitary capacitor units are coupled in common, and the other ends of other capacitive elements are also coupled in common. Turning on and off of respective switches in all the unitary capacitor units are controlled in common.
    Type: Grant
    Filed: October 13, 2012
    Date of Patent: September 23, 2014
    Assignee: Renesas Mobile Corporation
    Inventor: Takahiro Nakamura
  • Publication number: 20140241475
    Abstract: A semiconductor device includes a one-segment tuner I/F that is connected to a one-segment tuner, a tuner I/F that is connected to a digital terrestrial tuner, a decoder that selectively decodes a first broadcast signal supplied from the one-segment tuner I/F and a second broadcast signal supplied from the tuner I/F, a general purpose processor that is provided separately from the decoder and decodes the first broadcast signal, and a switch unit that, based on signal intensity of the second broadcast wave, switches the decoding by the decoder between the first broadcast signal and the second broadcast signal while the general purpose processor is decoding the first broadcast signal. The one-segment tuner I/F, the tuner I/F, the decoder, the general purpose processor, and the switch unit are integrated on one chip.
    Type: Application
    Filed: May 7, 2014
    Publication date: August 28, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: Yoshihiko Hotta, Seiichi Saito, Kazushige Yamagishi
  • Patent number: 8816766
    Abstract: A semiconductor integrated circuit includes: a first capacitance element and a second capacitance element; a first amplification circuit that amplifies a potential difference of a first voltage signal and a second voltage signal supplied via the first capacitance element and the second capacitance element, respectively, to output a first amplification signal and a second amplification signal; a first resistance element that feeds back the first amplification signal to one input terminal of the first amplification circuit; a second resistance element that feeds back the second amplification signal to another input terminal of the first amplification circuit; a voltage generator that generates a predetermined voltage; and a third resistance element that transmits the predetermined voltage generated by the voltage generator to each input terminal of the first amplification circuit.
    Type: Grant
    Filed: October 27, 2012
    Date of Patent: August 26, 2014
    Assignee: Renesas Mobile Corporation
    Inventors: Yutaka Igarashi, Yusaku Katsube
  • Publication number: 20140218382
    Abstract: A semiconductor apparatus pertaining to one embodiment has: a first processor that operates by a first program and reads pixel data from a storage unit; a second processor that operates by a second program, performs processing to the pixel data, and writes the processed pixel data back to the storage unit; and a buffer circuit that transfers the pixel data from the first processor to the second processor.
    Type: Application
    Filed: January 26, 2014
    Publication date: August 7, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: Manabu Koike, Akihiro Yamamoto, Atsushi Nakamura, Hideaki Kido
  • Publication number: 20140215243
    Abstract: A semiconductor device includes a CPU core, a frequency regulating circuit, and a frequency control circuit. The frequency regulating circuit includes a table. The frequency control circuit provides a clock to the CPU core. The CPU core outputs an operating state signal indicating an operating state of the CPU core. The frequency regulating circuit controls a frequency of the clock based on the table and the operating state signal. Thus it is possible to provide a seiconductor device that allows performance to follow a dynamically changing load.
    Type: Application
    Filed: January 19, 2014
    Publication date: July 31, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: Go Sado, Masaki Fujigaya, Kohei Wakahara, Keiji Hasegawa
  • Publication number: 20140210544
    Abstract: A monitor circuit includes a reference voltage generating unit that generates first and second reference voltages, a first amplifier unit that amplifies a differential voltage between the first reference voltage and the second reference voltage, a second amplifier unit that amplifies a differential voltage between an internal power supply voltage being supplied to a functional block provided in the semiconductor integrated circuit and the first reference voltage, and a comparator unit that compares an amplification result of the first amplifier unit with an amplification result of the second amplifier unit and outputs a comparison result as a measurement result.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: TADASHI KAMEYAMA, TAKANOBU NARUSE, YOHEI AKITA, HIROTAKA HARA
  • Publication number: 20140187237
    Abstract: There is provided an interference mitigation or frequency channel collision mitigation scheme usable for a short range communication network where a network element of a cellular network is used as a coordinator or controller for the collision mitigation. Communication information regarding a communication in the short range communication network and concerning a frequency selection for a communication are processed so as to determine collision mitigation data for reducing interference in the communication in the short range communication network. The collision mitigation data regarding the communication in the short range communication network are sent to a communication network element such as a UE acting as a master node of the short range communication network.
    Type: Application
    Filed: May 10, 2011
    Publication date: July 3, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: Zhenhong Li, Haifeng Wang, Ying Hu, Jian Zhang, Honglin Hu
  • Publication number: 20140189259
    Abstract: A semiconductor device includes a first memory controller configured to output a first control signal to first and second external memories through a first memory interface, a second memory controller configured to output a second control signal to the second external memory through a second memory interface, an inter-device interface for communicating with another semiconductor device, terminals configured to output the second control signal that has passed through the second memory interface, and a first selector configured to select between the second memory interface and the inter-device interface in accordance with an operation mode of the semiconductor device and to couple the selected interface to the terminals.
    Type: Application
    Filed: November 19, 2013
    Publication date: July 3, 2014
    Applicant: Renesas Mobile Corporation
    Inventors: Kenichiro Omura, Ryohei Yoshida, Takanobu Naruse, Seiichi Saito
  • Patent number: 8767131
    Abstract: A semiconductor device includes a one-segment tuner I/F that is connected to a one-segment tuner, a tuner I/F that is connected to a digital terrestrial tuner, a decoder that selectively decodes a first broadcast signal supplied from the one-segment tuner I/F and a second broadcast signal supplied from the tuner I/F, a general purpose processor that is provided separately from the decoder and decodes the first broadcast signal, and a switch unit that, based on signal intensity of the second broadcast wave, switches the decoding by the decoder between the first broadcast signal and the second broadcast signal while the general purpose processor is decoding the first broadcast signal. The one-segment tuner I/F, the tuner I/F, the decoder, the general purpose processor, and the switch unit are integrated on one chip.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: July 1, 2014
    Assignee: Renesas Mobile Corporation
    Inventors: Yoshihiko Hotta, Seiichi Saito, Kazushige Yamagishi